JPH0594564A - Data processing system - Google Patents

Abstract

PURPOSE:To obtain a data processing system capable of recognizing characters by a hand- written character input type portable data terminal without a trouble as a business. CONSTITUTION:This data processing system has a display means 22, a hand-written character input means (TB) 103 for inputting character information or an instruction, the 1st recognizing means 105 for recognizing a hand-written character(HC) outputted from the TB 103 based upon a character recognizing dictionary(DIC) and obtaining input character information, a control means 108 for sending the HC pattern to a host (HOST) side when the means 105 can not recognize the HC concerned and using character information obtained at the HOST side as input character information, a terminal (DT) provided with the 1st radio transmission means 102 for transmitting/receiving information to/from the HOST side, the 2nd radio transmission means for transmitting/receiving information to/from the DT, a HOST side recognizing means having a large capacity DIC larger than the DT, receiving the HC pattern from the DT side, recognizing the pattern as a character based upon a DIC built in itself and obtaining an input character information, and a HOST side control means for controlling respective parts so as to apply the HC pattern obtained from the DT side through the 2nd radio transmission means to the HOST side recognizing means and send the character information obtained by HOST side character recognition to the DT.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an electronic notebook equipped with an online character recognition function, and in particular, the electronic notebook is used as a portable terminal, and even if the terminal does not have an insufficient character recognition dictionary, The present invention relates to a data processing system capable of handling habit characters and unregistered characters without any trouble.

[0002]

2. Description of the Related Art Recently, with the remarkable progress of semiconductor integrated circuit technology typified by a microprocessor (CPU) and a large-capacity semiconductor memory, various devices have been used as applications of the high-performance semiconductor integrated circuit. There is a portable terminal called an electronic notebook among them.

In general, an electronic notebook can be checked by inputting a personal schedule, a telephone directory, etc., and displaying the contents on the go. In addition, the stored contents can be changed and updated relatively easily, which is a very convenient device. Here, the electronic notebook has a Japanese language processing function in order to be able to input and store documents etc. This is similar to the document input of a general PC, and it uses romanized kana-kanji conversion or kana-kanji conversion. It

However, the electronic notebook is small in size in order to emphasize portability, and naturally the keyboard is also small and there is a difficulty in operability. Further, since the electronic notebook has insufficient storage capacity in the main memory, an external storage device or an extended memory is used. Generally, since there are no mechanical parts, and it is extremely small and consumes less power, memory cards are often used, and users of electronic notebooks attach information to be input on the go to the electronic notebooks. It is often stored in a removable memory card.

Then, when returning to the home or office, this memory card is attached to a computer (personal computer or the like) as a host system via a memory card interface, and the stored contents of this memory card are transferred to the computer. By performing data processing on the side, the information input at the destination can be utilized. Therefore, it is not suitable for the purpose of inputting customer information on the go like a salesperson and immediately inquiring the computer of the headquarters on the spot to obtain necessary information.

[0006] Recently, as an advanced type of electronic notebook, when a character is directly written on a display without using a keyboard, a character pattern is recognized and converted into a character code. Type of electronic notebook is emerging. This is generally called online character recognition.

This online character recognition type electronic notebook has a tablet integrated with a display for inputting a character pattern, and by performing a writing operation with a pen on the tablet, the written position information is detected, By inputting the character pattern with this position information, the input character is recognized and the character is input.

Since the recognition result can be displayed on the display as a character pattern at the same time, the operability and the input confirmation can be improved in terms of handwriting input and display of the input character on the handwritten input display. It is an excellent method as a man-machine interface because it is easy.

Further, it is possible to input data by touching a designated area on the display screen with a pen (this is called direct pointing), and it is possible to operate while directly looking at the screen, which is called good operability. In terms of points, it has very good features not found on keyboards.

As described above, there is a strong demand for a salesperson to directly send and receive data to and from the computer (host side) of the headquarters by using an electronic notebook while on the go. For this reason, electronic notebooks having a wireless data transmission function have recently appeared.

FIG. 6 is an external view of a system showing an example of a portable data terminal (electronic notebook with wireless data communication function) capable of handwriting input with a pen and also having a wireless data transmission function. In the figure, reference numeral 1 denotes a portable data terminal body (electronic notebook body), which has a box-like shape with a thickness as small as a notebook or a notebook. The main body 1 is provided with a display unit 2 for displaying characters and pictures on a flat panel display such as a liquid crystal panel, and a transparent tablet is attached to the display unit 2 so as to cover the surface thereof substantially integrally. There is. The tablet is divided by transparent electrodes formed so as to partition the display area of the display unit 2 into fine sections in a matrix shape. By pressing each section, the X-axis and Y-axis coordinate points corresponding to the section position are displayed. It is arranged to obtain a corresponding signal.

Reference numeral 3 is a pen, and a contact detecting element such as a microswitch is provided on the pen tip and is connected to the main body 1 by a cord. Then, when the pen tip of the pen 3 touches the tablet, a contact detection signal of the contact detection element is obtained from the pen 3 and contact position information is obtained from the tablet. Reference numeral 4 denotes an antenna provided on the main body 1. The main body 1 has a processor, a memory, a display driver, an input interface for signals of a tablet and a pen,
In addition to a printer interface and the like, a wireless data transmission unit is provided for exchanging data with the outside, and 4 is an antenna thereof. A printer 5 is connected to the main body 1 by a printer cable 6. Reference numeral 7 is a recording sheet of the printer 5.

In such a structure, normally only the main body 1 is used, and a command or character can be input to the main body 1 by drawing a character or giving an operation command while touching the tablet with the pen 3. it can. The operation command is displayed on the screen of the display unit 2 by pressing the desired item in the operation instruction area, which displays a symbolized operation content called an icon, with the pen 3 to determine which icon is selected from the position information. It can be given by being recognized on the side, and the operation contents corresponding to the icon can be executed by the processor on the main body 1 side.

The printer 5 is portable and is connected to the electronic notebook body 1 by a cable. Usually, the main body 1 is sufficient. However, the salesperson can create a slip or the like on the spot and hand it over to the customer for confirmation on the spot.

Here, the electronic notebook body 1 which is a portable wireless terminal can be used in a form as shown in FIG. Each of the wireless communication base stations 8a to 8n covers a certain area, and wirelessly exchanges data with portable wireless terminals (electronic notebooks 1a to 1m) in the area. You can And a plurality of base stations 8a-8
n is connected to the central office 9 by a microwave line or a wired line.

From the central office 9 to the general public line 10
Is connected to the computer (host computer) 11 on the user side. At present, this system corresponds to the teleterminal system.

In such a system, communication can be performed between portable wireless terminals (electronic notebook main bodies 1a to 1m) through the base stations 8a to 8n. The communication system adopts the multi-channel access system and the packet communication system, and data communication of 9600bps is possible in the wireless section. In the near future, such a service will be used in the second-generation cordless telephone system.
Screws become possible. This system is basically based on telephone calls, but since the communication system is digital, I
By adopting SDN (Digital Integrated Service Network) data transmission, it becomes possible to easily perform service.

In these methods, when a plurality of base stations cover a wide area evenly and there is no dead zone (incommunicable area) of the radio wave, the person who owns the terminal moves to that area. However, since the data can be exchanged with the user-side computer 11 immediately, the efficiency of the work on the go is significantly improved.

However, there is a problem here. In general, the online character recognition method adopted in a portable terminal often has a simplified function. For example, it may not have a recognition dictionary required for recognizing the special kanji used for proper nouns. That is, the online character recognition method recognizes a pattern of a character input by handwriting, compares the pattern with a registered pattern in a recognition dictionary, recognizes a matching or similar pattern as the pattern of the input character, and recognizes the recognized character. The input is completed by getting the code of, but in the case of a pattern that is not in the recognition dictionary, if there is a similar registered pattern, it is mistaken for the input character, and if there is no similar pattern, it is rejected. Will end up.

When the mobile terminal is used for business purposes, the customer's address or the customer's name is entered on the slip and negotiated on the spot when the customer negotiates with the customer on the spot and the business negotiation or order is completed. It may be printed by a printer and given to the customer as a copy of the order form.

In this case, if a special kanji is used for the address or name, the kanji must be entered, but there is no recognition dictionary for that character, and it cannot be entered because it cannot be recognized. Then, instead of using kana characters or the like, it may give a bad impression to the customer.

Even if it is not a special character that is not found in the dictionary, it may be impossible to recognize it if the input character has a considerable habit. In such a case, since the learning function of the recognition dictionary may be added to general character recognition, such unrecognizable characters are specially learned by using the input pattern of this character and new. It is possible to say that a recognition dictionary is created. With such a learning function, even if similar characters appear thereafter, they can be recognized without any problem.

However, since the learning function has a considerably large amount of processing as hardware and is often large in scale, it is necessary to reduce the size and weight of the portable wireless terminal intended to be carried outside. , I can't afford to have the hardware to implement such a learning function.

[0024]

As described above, in the conventional electronic notebook capable of creating slips and Japanese documents, a handwritten character input method, which is an online type, is used as an input device from the viewpoint of operability and the like. Many use character recognition methods. However, the online character recognition method that is generally adopted in mobile terminals has a relatively simple function for character recognition, and there is no recognition dictionary for special characters, so when the characters are input, they are not recognized. It will be possible.

Further, even if it is in the recognition dictionary, even if a considerable habit character is input, the recognition becomes impossible. Any character in the recognition dictionary can be recognized by learning with the learning function, but the learning function cannot be added to the electronic notebook in order to simplify the hardware. Therefore, when the same character is input again, it becomes unrecognizable again.

In such an incomplete online character recognition system, there is a problem when the electronic notebook is used for business such as sales. Therefore, it is desired to develop a system capable of recognizing characters for business use without any problem even with a portable data terminal having a Japanese language processing function such as an electronic notebook.

Therefore, the object of the present invention is to
For portable data terminals such as electronic notebooks that have a Japanese language processing function using the online character recognition method, it is possible to perform character recognition that does not hinder business use.
A portable data terminal is to provide a data processing system that can be reduced in size and weight.

[0028]

In order to achieve the above object, the present invention is configured as follows. That is, the host side and the terminal device side are connected by a wireless line so that data can be exchanged between them, and the terminal device side can input handwritten characters and process Japanese based on this. In the data processing system, firstly, a display means for displaying contents, a handwriting input means for inputting character information and a command, and a handwriting character input by the handwriting input means based on a character recognition dictionary. The terminal-side character recognition means for pattern recognition and conversion into character codes to obtain input character information, and when this character recognition means cannot normally recognize the input handwritten character, sends the handwritten character pattern to the host side. A control means for receiving character information obtained as a result of pattern recognition on the host side to obtain input character information, and a first wireless transmission means for exchanging information with the host side. It has a mobile terminal device provided, a second wireless transmission means for exchanging information with the mobile terminal device, and a character recognition dictionary having a larger capacity than the mobile terminal device. Of the handwritten character from the portable terminal device side received through the second wireless transmission means and the host side character recognition means for recognizing the pattern based on the self-contained character recognition dictionary and converting it into the character code to obtain the input character information. A host side control means for giving the pattern to the host side character recognition means and for giving the character information obtained from the pattern recognition result of the host side character recognition means to the second wireless transmission means so as to send to the portable terminal device side. Configure.

Secondly, when the character recognition result obtained on the host side corresponds to a character which does not have a character font for display on the portable terminal device side, the character font for character display is used for the portable terminal. The function of sending to the device side is provided in the host side control means, and the terminal side control means is provided with the function of controlling the character font received from the host side to be used for display or print output.

Thirdly, the control means on the portable terminal device side is provided with a function of updating the character recognition dictionary of the character recognizing means on the portable terminal device side in response to the learning result from the host side, and the host side character The recognizing means is provided with a learning function for reflecting the result of character recognition determined by the selection instruction from the portable terminal device side in the character recognition dictionary, and the host-side control means is provided with the result obtained by this learning function. In order to reflect in the character recognition dictionary on the side, the function of sending to the mobile terminal device side is added.

[0031]

In the above structure, the user carries the portable terminal device with him / her at the place where he / she inputs data or Japanese, and this input is handwritten character input, and the character pattern by handwritten character input is based on the character recognition dictionary. Character recognition is performed to determine the corresponding character, and the character code is used as input character information for Japanese processing. When a special character or a habitual character is handwritten on the portable terminal device side, the character recognition cannot be performed. In this case, the control means on the terminal side transmits the pattern of the input character via the first wireless transmission means. Send to the host side. In response to this, the host side recognizes the character based on its own character recognition dictionary, determines the corresponding character, sends the character code to the mobile terminal device, and the mobile terminal device side obtains the character code of the input character by this. Process Japanese. As a result, even if the character recognition function is insufficient on the terminal side, it is possible to process Japanese without trouble.

In the case of the second configuration, when the character recognition result obtained on the host side corresponds to a character that does not have a character font for display on the portable terminal device side, the character font for character display is changed to the character font for display. Send to the mobile terminal device side. And
The mobile terminal device side controls to use the character font received from the host side for display or print output.

Further, in the case of the third configuration, the host side character recognition means has a learning function for reflecting the result of the character recognition determined by the selection instruction from the terminal side in the character recognition dictionary, and the portable terminal device side. When the character recognition is not possible, the host side is made to perform the result, and the result is used at the portable terminal device side. At that time, the learning function at the host side improves the accuracy of character recognition. The control means on the host side has a function of sending the result obtained by this learning function to the mobile terminal device side in order to reflect it in the character recognition dictionary on the terminal side, and the control means on the mobile terminal device side has Since there is a function of updating the character recognition dictionary of the terminal side character recognition means in response to the learning result from the host side, the learning result on the host side can be reflected on the mobile terminal device side. for that reason,
The correct answer rate of character recognition on the mobile terminal device side also increases, and the rate of entrusting character recognition to the host side also decreases.

As described above, when an input character cannot be recognized by the mobile terminal device, the pattern of the character in which the corresponding character is input from the mobile terminal device is wirelessly transmitted to the host side for recognition by the host side, and the recognition result is displayed. If there is an opportunity to frequently input habitual characters, send the input pattern of the corresponding character to the host side wirelessly, learn there and create a new recognition dictionary. , The dictionary is wirelessly sent back to the terminal side, and the new recognition dictionary is recognized on the mobile terminal device side. In this way, data is wirelessly exchanged between the mobile terminal and the host side. Therefore, even if the terminal side does not have the special character recognition, habitual character recognition, or habitual character recognition learning function, it can be provided by the host side. As a result, the hardware required for recognition processing can be minimized on the mobile terminal device side, and the mobile terminal can be made compact and lightweight while having practically sufficient recognition ability. It will be possible.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a portable wireless terminal (electronic notebook) showing an embodiment of the present invention, and FIG. 2 is a block diagram thereof.

As shown in FIG. 1, a portable data terminal (electronic notebook with a wireless data communication function) in the system of the present invention that allows handwriting input with a pen, has a wireless data transmission function, and can exchange data with the host side. The main body (electronic notebook main body) 21 has a box-like shape with a thickness of about the same as a notebook or a notebook. The main body 21 is provided with a display section 22 for displaying characters and pictures on a flat panel display such as a liquid crystal panel, and a transparent tablet is attached to the display section 22 so as to cover the surface thereof substantially integrally. There is. The tablet is divided by transparent electrodes that are formed so as to partition the display area of the display unit 22 into fine sections in a matrix, and by pressing each section, the X-axis and Y-axis coordinate points corresponding to the section position are displayed. It is arranged to obtain a corresponding signal.

Reference numeral 23 is a pen, and a pen tip is provided with a contact detection element such as a micro switch, and is connected to the main body 1 by a cord. When the pen tip of the pen 23 touches the tablet, a contact detection signal of the contact detection element is obtained from the pen 23, and contact position information is obtained from the tablet. Reference numeral 24 denotes an antenna provided in the main body 21. The main body 21 has a processor, a memory, a display driver, a tablet / pen signal input interface, a printer interface, and the like, and a wireless data transmission unit for exchanging data with the outside. Is provided and 24 is its antenna. A printer 25 is connected to the main body 21 by a removable printer cable 26. Reference numeral 27 is a recording sheet of the printer 25.

Further, the main body 21 is constructed as shown in FIG. In the figure, reference numeral 24 is an antenna, and 102 is wireless data transmission that performs an operation of receiving a radio wave through the antenna 24 and converting it into data, and an operation of receiving the data and converting it into a high frequency radio wave and radiating it from the antenna 24 into the air. This is a unit for wirelessly exchanging data with a computer on the user side.

Reference numeral 103 denotes a position input section (tablet) for inputting information (coordinates) of a screen position designated by the pen 23 for inputting a character pattern or direct pointing (hereinafter referred to as "point"). The pen 23 for writing on the screen is connected to the position input unit 103 by a signal line. Then, by a contact detection element such as a micro switch provided at the pen tip of the pen 23,
When the pen touches the screen, it detects it (switch on when the contact detection element is a micro switch), and the information is transmitted to the position input unit 103 via the signal line. The position where the pen 23 contacts is calculated. An online character recognition unit 105 performs a recognition process on the character pattern input from the position input unit 103 and outputs a corresponding character code of the recognized character.

Reference numeral 22 denotes a display section using a flat display panel such as a liquid crystal panel or a plasma display panel, and the position information input section 103
It is possible to display the position area for pen input at the same time as the above.

Reference numeral 107 denotes a memory unit for storing temporary information relating to the processing process of the terminal and a required processing program. Reference numeral 108 denotes a control unit which is mainly composed of a microprocessor and executes a processing program stored in the memory unit 107 to control the operation of each unit of the terminal. Reference numeral 109 denotes a printer interface, which can be connected to an external printer 25 with a signal cable 26 to send print information of the screen of the display unit 22 as needed under the control of the control unit 108. , Can be printed and output.

In the present system, under the control of the control unit 108, the display unit 22 has an area for handwriting input, a display area for characters obtained by pattern recognition, a display area for an icon for giving an operation command, etc. It is possible to display an input screen having a predetermined layout including a position input section (tablet) 103 which is arranged so as to cover the display section 22 by writing or pushing with the pen 23. The position information is output from the (tablet) 103, and the control unit 108 receives the position information and recognizes a command or the like by a character pattern or an icon from the position information,
It is possible to perform processing and control based on commands, and to take in data as a character pattern.

Although the terminal does not have a learning function, the icon has a "learning" command icon, and by operating this, the control unit 108 causes the character pattern data and command, etc. Is sent to the host side, the host side performs character recognition and learning using its own character recognition dictionary, and the learning result can be fetched. Also, the learned character recognition dictionary on the host side can be loaded.

The online character recognition unit 105 receives a command from the control unit 108 and character pattern data, recognizes the character of the character pattern by referring to the recognition dictionary, and outputs the code of the corresponding character. Then, the online character recognition unit 105 includes a character recognition dictionary required in the process of recognition processing. The character recognition dictionary can be replaced under the control of the control unit 108.

FIG. 3 is a block diagram showing the configuration of the user computer, which is the host system. In the figure, 210 is a general public line connected for communicating with the central office, and 211 is a communication interface for communicating with the public line 210. Reference numeral 212 denotes a character recognition unit that performs character recognition on the input character pattern by using the character recognition dictionary that the user has by inputting a character pattern. Reference numeral 213 indicates a pattern when a new character pattern is input. A recognition learning unit that performs character recognition learning. Reference numeral 214 denotes a memory unit that is used to temporarily store data in the process of the computer and stores programs necessary for various processes and controls on the host side, and 215 executes the programs of the memory unit 214. The control unit controls the operation of each unit of the computer (host side).

The character recognition dictionary included in the character recognition unit 212 has many types of special characters that can be recognized with a large capacity as compared with the dictionary included in the terminal side, and can recognize even considerably deformed characters. It has a simple structure. In addition, recognition is not performed by one dictionary, but recognition is performed by a plurality of dictionaries having various characteristics, so that it is possible to recognize characters that are difficult to recognize at the terminal. Then, according to the command received from the terminal side, the host side controls the control function that controls the character recognition or learning and sends the learned character recognition dictionary or the character recognition result to the terminal side. It is provided to the part 215.

Next, the operation of the present system having such a configuration will be described. FIG. 4 shows a display screen displayed on the display unit 22 when a normal character is input on the terminal side. 116 to 120 on the display screen are icons that perform a predetermined operation when pointed by the pen 23 at the time of recognition, and are symbols displayed according to the content of the command.

Reference numeral 121 on the display screen is a handwritten character entry frame. First, the pen 23 is used to point to the “write” item of the icon 116. The pointed information is given to the control unit 108 via the position input unit 103, and the control unit 108 determines from this position information that it is a writing operation.

Next, the pen 23 is used to handwrite and enter characters in the frame 121 on the display screen. Then, the handwritten character pattern is sequentially converted into position information by the position input unit 103, and the control unit 108 controls the frame 1
The online character recognition unit 105 recognizes the position information of the character written in 21 as the character pattern information of the input operation area.
Send to. As a result, the position information is stored in the online character recognition unit 105, and the character pattern input by handwriting is captured.

Next, the pen 23 is used to point to the "recognition" command icon 117 on the display screen. Then, the position input unit 103 sends this position information to the control unit 108,
The control unit 108 now has a command icon 11 for "recognition".
Recognize as the operation of 7. Then, the control unit 108 sends a recognition start command to the online character recognition unit 105. The online character recognition unit 105 performs character recognition on a character pattern of a character that has already been stored and is input by handwriting, and sends the recognition result to the control unit 108 as a character code.

Then, the control unit 108 controls to obtain a character corresponding to the character code based on the recognition result through a character font conversion means such as a character generator and display this character font in the area of the character entry frame 121 of the display screen. To do. At this time, in the area of the frame 121 of the display screen, the character pattern previously input by handwriting and displayed as it is input is erased, and instead the display pattern (pattern in the character font) for the recognition result is displayed. To be done.

At the same time, the recognition result is displayed left-justified in the input display area 122 of the display unit 22 and is composed as a sentence. Items and positions of the text pattern of the input display area 122 to be displayed are also determined depending on the use (for example, a schedule table). When pointing to the "←" icon 119, the control unit 108 recognizes that the command is a clear command, and the pattern displayed in the area of the character entry frame 121 is erased and the initial state is restored. The operation described above is an example in which character recognition is performed by normal handwriting input.

However, in the recognition process in the online recognition unit 105 described above, if the character entered in the character entry frame 121 is a special character or a character with a habit, the recognition result is erroneous and a wrong recognition result is obtained. There is a case where it is issued or it is rejected (rejected).

Here, in the recognition processing in the online recognition unit 105, the similarity between the input pattern and the recognition dictionary is calculated for each character in the dictionary, and the character with the highest similarity is used as the recognition result. Rejection occurs when the character similarity calculated as the recognition result is smaller than a predetermined size. That is, it means that the input pattern is far from the character pattern targeted by this recognition dictionary. Also, if the wrong recognition result appears, even if the input pattern is not targeted for the recognition dictionary, the shape of the character pattern is similar to other characters,
It may be recognized as the character.

Here, if the recognition is incorrect, an incorrect display pattern is displayed in the entry frame in which the character is entered in the character entry frame 121. In the case of reject, a pattern in which the entire frame is filled or a special symbol may be displayed.

Next, whether the recognition is wrong as described above,
Alternatively, when rejected, after pointing to the command icon 118 of “recognition (outside)” with the pen 23,
Point within the frame of the target character in the character entry frame 121. By this operation, the control unit 108 causes the position input unit 103
When receiving point information from the online character recognition unit 1
From 05, read the character pattern pointed to earlier,
It is sent to the wireless data transmission unit 102. Wireless data transmission unit 10
2 converts a character pattern into a high frequency and radiates it as a radio wave from the antenna 24 into the air. The radio wave is received by a base station in the vicinity, converted into a character pattern, and then sent to the user's computer through the central station and the public line. Next, the operation of the user-side computer (host side) will be described with reference to FIG.

The character pattern is input to the communication interface 211 of the user computer through the public line 210. The control unit 215 reads the character pattern from the communication interface 211 and sends it to the character recognition unit 212. Here, the character recognition dictionary included in the character recognition unit 212 has a large number of types of special characters that can be recognized with a large capacity as compared with the dictionary included in the terminal side, and has a structure that can recognize even considerably deformed characters. Is becoming In addition, recognition is not performed by one dictionary, but recognition is performed by a plurality of dictionaries having various characteristics, so that it is possible to recognize characters that are difficult to recognize at the terminal.

Then, the recognition result is sent from the character recognition section 212 to the control section 215. When the control unit 212 determines that the recognized character is a standard character included in the dictionary on the terminal side as a recognition target, it sends the character code data as the recognition result to the communication interface 211.
The data of the character code as the recognition result is sent from the communication interface 211 to the public line 210.

The character code data sent out is finally received by the antenna 24 of the terminal, and the wireless data transmission unit 1
The data is demodulated in 02, converted into data, and sent to the control unit 108. When the control unit 108 on the terminal side receives the character code data, the display pattern (character font) corresponding to the character code is displayed at the corresponding position in the character display frame 121 of the input screen displayed on the display unit 22 and the input sentence display area 122. ) Is received from the character generator or the like and displayed. Accordingly, the display unit 22 displays the corresponding character at the corresponding position.

On the other hand, if the control unit 215 of the computer on the user side determines that the recognition result is a character that is not targeted by the dictionary on the terminal side (character that is not in the character recognition dictionary) (special characters correspond to this case). Then, the control unit 215 sends the character code and display pattern of the corresponding character to the terminal side by the same operation as described above. The control unit 108 on the terminal side stores the display pattern (character font) in the memory unit 107 in association with the character code.

Then, when the same character is recognized thereafter, if only the character code is sent from the user side computer (host side), the terminal side reads the display pattern stored in the memory unit 107 and uses it for display. By controlling to, special characters can be displayed on the terminal side.

Here, it is necessary to frequently input the same character, and if the character is a habit character, originally, the online character recognition unit of the user side (host side) computer is always used as in the above processing. However, if the idiom is frequently used, data transmission / reception and character recognition would be performed between the terminal and the user's computer each time the data was input. It is time consuming and inefficient. Therefore, in order to cope with such a situation, the character recognition dictionary on the terminal side can be exchanged.

This is learned by the host side replacing the character recognition dictionary corresponding to the terminal side with a structure matching the input habit character, and as a result of the learning, a new character corresponding to the habit character is learned. We are building a recognition dictionary. Therefore, the constructed character recognition dictionary is sent to the terminal side to learn again by replacing the character recognition dictionary on the terminal side with a new one corresponding to the habit character. This is automatically performed on the terminal side in cooperation with the host side by giving a learning command from the terminal side.

Then, using this dictionary thereafter, when the corresponding habit character is input, it can be recognized on the terminal side and the correct answer can be obtained on the terminal side, and character recognition can be performed smoothly. Like

To this end, in the operation described with reference to FIG. 4, when the recognition is wrong due to the habit character, the frame in which the habit character is entered is pointed to among the "learning" command icon 120 and the character entry frame 121. .. The control unit 108 recognizes this and immediately changes the display screen of the display unit 22 to the screen of FIG. Then, the control unit 108 first sets the character entry frame 12
In step 1, the pattern of the quirky character in question is copied to the frame 128 as it is and displayed.

Then, the operator points to the "write" command icon 123, enters the reading of the character in question in the entry frame 130 using a kana, and then enters the "recognition" command icon. When pointing to 124, the control unit 108 determines that this is a “recognition” command and gives a command for recognition to the online character recognition unit 105. The online character recognition unit 105 recognizes a kana character entered in the entry frame 130 on the display screen of the display unit 22 and converts it into a kana display pattern. Then, the controller 1
08 is displayed in the entry frame 130 of the display unit 22.

Next, the operator designates the "conversion" command icon 1
When the user points 25, the control unit 108 "converts" this.
Online character recognition unit 1
Give to 05. The online character recognition unit 105 has a frame 1
Converted into kanji corresponding to the reading of kana displayed in 30,
As a result, the control unit 108 controls the frame 1 of the display unit 22.
The converted kanji is displayed in 29.

When the operator points further at the "conversion" command icon 125, the kanji candidates for the same reading change and another kanji is displayed, so this kanji pattern is displayed until the desired kanji pattern appears. Repeat the operation. When the desired Chinese character pattern appears in the frame 129, the operator points to the “learn” command icon 127. Thereby, the control unit 108 wirelessly sends the character code data of the corresponding Kanji and the data of the Kanji pattern written in the character frame 128 to the user side computer. When the user computer receives the Kanji code and Kanji pattern (character font), the control unit 215 sends the data to the recognition learning unit 213.

The recognition learning unit 213 manages a recognition dictionary for each terminal, and learns a new dictionary by using the received kanji pattern data as a sample, targeting the dictionary of the terminal that has sent the data this time. .. When the learning is completed, the new dictionary will have good recognition performance even for the sample habit character. Then, the control unit 215 controls to transmit this new dictionary to the terminal side.

In this way, the new dictionary is sent from the user's computer to the terminal side, and the terminal side controls the control section 108 to store the received new dictionary in the online character recognition section 105.
5 will be changed to this new dictionary.

When the dictionary is changed to a new dictionary, the control unit 108 changes the display screen of the display unit 22 from the screen of FIG. 5 to the screen of FIG. As a result, a normal handwriting input screen is displayed again, and the processing for learning habit characters ends.

The "←" icon 12 in FIG.
6 is a command icon for erasing when a character is incorrectly entered in the character frame 130, and when the icon is pointed, the entered character is erased and the initial state is restored. You can

As described above, this system allows the host side and the terminal device side to be connected by a wireless line so that data can be exchanged between the two, and the terminal device side inputs handwritten characters and transmits them. In the data processing system of the online character recognition function method that enables Japanese processing in
Instead of recognizing kanji in the terminal, the character pattern handwritten from the terminal is sent wirelessly to the host side, where it is recognized and the character code is sent back to the terminal as the recognition result. When recognizing characters, the character data pattern handwritten from the terminal is sent wirelessly to the host side for recognition, the character font for display is sent back to the terminal as the recognition result, and the character font is used on the terminal side. It was made possible. Furthermore, the handwriting input pattern of kanji characters is wirelessly sent to the external device at the terminal, the character recognition dictionary for the input pattern is learned there, and the dictionary is sent back to the terminal to update the terminal side character recognition dictionary. This is the same as having a learning function on the terminal side.

As described above, when the input character cannot be recognized by the terminal, the character pattern in which the corresponding character is input is wirelessly sent to the host side, recognized by the host side, and the recognition result is sent back to the terminal side. In addition, if there is a chance that a character with a habit is frequently input, the input pattern of the corresponding character is sent to the host side wirelessly, learning is done there, a new recognition dictionary is created, and that dictionary is wirelessly By sending it back to the terminal side by using the new recognition dictionary on the mobile terminal device side, in this way, by wirelessly exchanging data between the mobile terminal and the host side, recognition of special characters, Even if the terminal side does not have a recognition function for recognizing habitual characters, or a function for recognizing habitual characters, it becomes possible to cope with this by providing the host side. Now that the hardware required for recognition processing can be minimized, it is possible to make the terminal compact and lightweight while having practically sufficient recognition ability. Can be made practical. The present invention is not limited to the embodiments described above and shown in the drawings, and it is needless to say that the present invention can be appropriately modified and implemented without departing from the scope of the invention.

[0075]

As described above, according to the present invention, the terminal and the host can perform processing that is difficult to process on the terminal side, such as recognition of special characters or habit characters and learning of a recognition dictionary for habit characters. Data processing by wireless with the host side so that these processes can be shared by the host side, which makes it possible to simplify the hardware on the terminal side, etc. It is possible to provide a data processing system capable of maintaining a character recognition function of a portable data terminal such as an electronic notebook having a personal computer to a level that does not hinder business use, and further promoting the reduction in size and weight of the terminal. ..

[Brief description of drawings]

FIG. 1 is an external view of a portable wireless terminal (electronic notebook) showing an embodiment of the present invention.

FIG. 2 is a block diagram of a portable wireless terminal (electronic notebook) according to the present invention.

FIG. 3 is a block diagram of a user-side computer (host-side computer) according to the present invention.

FIG. 4 is an example of a display screen displayed on the terminal display unit 22 when a normal character is input.

FIG. 5 is an example of a display screen of the terminal side display unit 22 when a character input character cannot be recognized.

FIG. 6 is a terminal system configuration diagram for explaining the prior art of the present invention.

FIG. 7 is a system configuration diagram for explaining a prior art of the present invention.

[Explanation of symbols]

21 ... Main body, 22 ... Display section, 23 ... Pen, 24
... antenna, 25 ... printer, 102 ... wireless data transmission section, 103 ... position input section (tablet), 105 ... online character recognition section, 107, 214 ... memory section, 10
8, 215 ... Control unit, 109 ... Printer interface, 210 ... Public line, 211 ... Communication interface,
212 ... Character recognition unit, 213 ... Recognition learning unit.

Claims (3)

[Claims] 1. The host side and the terminal device side are connected by a wireless line so that data can be exchanged between them, and the terminal device side can input handwritten characters and process Japanese based on this. In such a data processing system, display means for displaying contents, handwriting input means for inputting character information and commands, and handwritten characters input by the handwriting input means are patterned based on a character recognition dictionary. A terminal side character recognition means for recognizing and converting to a character code to obtain input character information, and when this character recognition means cannot normally recognize the input handwritten character, sends the handwritten character pattern to the host side And a first wireless transmission means for transmitting and receiving information to and from the host side. The mobile terminal device, the second wireless transmission means for exchanging information with the mobile terminal device, and the character recognition dictionary having a capacity larger than that of the mobile terminal device are provided. A host-side character recognition means for recognizing a pattern based on a self-contained character recognition dictionary and converting it into a character code to obtain input character information, and a handwritten character pattern from the portable terminal device side received via the second wireless transmission means. To the host side character recognizing means and to send the character information obtained from the pattern recognition result of the host side character recognizing means to the portable terminal device side.
And a host-side control means for providing the wireless transmission means of the above. 2. When the character recognition result obtained on the host side corresponds to a character that does not have a character font for display on the portable terminal device side, a function for sending the character font for character display to the portable terminal device side. 3. The data processing system according to claim 2, wherein the host-side control means has a function of controlling the character font received from the host side to be used for displaying or printing output. 3. The control means on the portable terminal device side is provided with a function for updating the character recognition dictionary of the terminal side character recognition means in response to the learning result from the host side, and the host side character recognition means is provided on the terminal side. It has a learning function to reflect the result of character recognition confirmed by the selection instruction from the character recognition dictionary,
3. The data according to claim 2, wherein the host-side control means has a function of sending the result obtained by the learning function to the mobile terminal device side so as to reflect the result obtained by the learning function in the character recognition dictionary on the terminal side. Processing system.