JPS59154651A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To detect mis-recording by constituting that a recording means and a reproducing means are operated independently respectively to attain reproduction and recording at the same time. CONSTITUTION:An optical beam is irradiated continuously from a light source 4b in a reproducing section 3 with a delay of 1/2 rotating phase of a recording medium 1 in order to reproduce sequentially information recorded on a recording area 17 at the outer circumference side. The reproducing section 3 is fed minutely from the outermost circumference of the recording area 17 at the outer circumference side to the innermost circumference by a driving motor 15b. The information recorded on the recording medium 1 is reproduced sequentially and outputted to a comparator circuit 21. The comparator circuit 21 compares an output level from the reproducing section 3 with an output level from a buffer memory 20. An error rate detector 22 operates a rate of a high level signal at each one line and when the rate exceeds a prescribed value it is discriminated as mis-recording, the detector 22 indicates re-recording to the buffer memory 20, the same information is outputted from the buffer memory 20, the same information is outputted from the buffer memory 20 to a recording section 2 again and recorded again on the recording medium 1. Further, when the ratio is a prescribed value or below, it is discriminated as normal recording and the detector 22 indicates clearing of storage of the information for its lines' share to the buffer memory 20.

Description

[Detailed description of the invention]

The present invention utilizes the ``Yubino'' to send 'l'i'i information.
-) Recording information recorded on a recording medium (this is related to the improvement of the Togyo device. Heat mode recording medium coated with 12 recordings W body)
hi/\johe/1 (Recording is performed by irradiating a light beam modulated according to the y, and scanning the recording medium with a signal beam, and the reflected light (transmitted light)); Information recording and reproducing apparatuses that detect chemical changes using light receiving elements and reproduce information are currently being used as gatekeepers. In this type of equipment, -) the tube diameter is recorded at about 1 micron meter on one body;
] Recording was performed, and the interval between Qi-columns (signal track pitch) became less than 2 microns, achieving a τ112 recording density of 1-59, which is one to two orders of magnitude higher than that of conventional recording media, such as magnetic disks. It can be done. Now, if the 1G diameter of the recording medium is 300 mm and the recording area is up to 100 cities in the inner diameter, the information [d] is approximately 3.2 gigabits,
16 pet (bell) can record approximately 1,000 sheets of A4 paper. Furthermore, by making the recording medium disc-shaped and configuring the recording section and the reproducing section to move relative to the recording medium in the radial direction, it is possible to freely record information recorded in the recording area of the recording body. Search (random access) is possible. Information recording and reproducing devices that use optical recording media take advantage of these features and are used as information collection files.In reality, they are used as a reading device that optically scans a document and converts it into an electrical signal, and an 'if [air signal] There are cases in which a laser beam printer is externally connected, and cases in which these are built-in.Information recording and reproducing equipment equipped with such a system In 〃, the recording medium is a substrate made of glass or the like coated with a heat mode material such as i'ec or Gd'1.'eF'e alloy.
During handling, defects such as pinholes and scratches, or defective parts that do not have their original function, may occur. Some information was recorded on this defective part. Despite the normal recording operation, some information was not recorded during the interrogation, and this may have been discovered in '11.
! This is when output requires information. As described above, there have been problems such as when there is a defective part in the recording medium, part of the information is not recorded. Another object of the present invention is to provide an information recording and reproducing device that solves the first problem and can determine erroneous recording almost at the same time as recording. In the invention, the recording means and the reproducing means are configured to operate independently, and the storage means temporarily stores the information recorded by the recording means, and the recording means records the information reproduced by the reproducing means at the same time as recording. The present invention is characterized in that an erroneous recording detection means is provided for detecting erroneous recording by comparing information stored in the means, and when recording, erroneous recording is detected by playing back at the same time as recording. , the present invention will be explained in detail based on an illustrated embodiment. Figures 1 to 3 show an embodiment of the present invention, and Figure 1 is a perspective view showing a recording section and a scooping section of an information recording and reproducing device. In the figure, 1 is a recording medium made of glass or synthetic resin, and its surface is coated with a thin film of a heat mode phase material, such as TeC.2 and 3 are a recording section and a reproduction section, respectively. Inside are light sources 4a, 4b, beam splitters 5a, 5b. Total reflection mirrors 6a, 6b, objective lenses 7a, 71: +
, spherical Lz lenses 8a, 8b, cylindrical lens 9a
, 9b, and a light receiving element 10a, 1.01). Furthermore, the reproducing unit 3 includes a dragging mirror 11 that scans and follows the positional movement of the signal train due to eccentricity of the recording medium 1, etc.
, a λ/2 plate 12, a polarizer 13, and an analyzer 14. 15a and 15b are drive motors that can operate independently, respectively, and are integrally constructed with groove screws 16a and 16[). The grooves of the groove screws 16a and IEi b and the grooves of the recording section 2 and the reproduction section 30 (not shown) are engaged 7, and the drive motors 15a and 15b drive the d. 16a, 16bH start rotation, thereby 1:

[The recording section 2 and the tIf recording section 3 are each independently connected to the recording medium 10.
Microscopic feed in the radial direction. FIG. 2 is a diagram showing area divisions of the recording medium 1. As shown in FIG. 1. Recording medium] The upper part is divided into an outer recording area 17 in which fixed information is recorded and an inner recording area 18 in which information (temporary information) for reproduction/editing 11+ is recorded. FIG. 3 is a block diagram showing the information recording/reproducing device. 1
Reference numeral 9 is a reader that takes the information of the manuscript, 20 is a buffer memory, and the reader 19 reads "1
I remember 14 years. Reference numeral 21 denotes a comparison circuit that compares the output from the reproducing section 3 with the output from the buffer memory 20. 22 is an error rate detector which, as a result of the line-by-line comparison by the comparator circuit 21, determines that if the mismatch ratio exceeds a predetermined value, it is erroneous recording, and instructs the backup memory 2° to re-record;
If the value is less than a predetermined value, it is determined that the recording is normal, and the pan 7 amemo I) 20 is instructed to clear the memory. 23 is a printer. Next, the operation will be explained. First, the time of recording will be explained. The reader 19 reads the information on the document, converts the information into an electrical signal, and outputs it to the buffer memo v'20. The buffer memory 20 temporarily stores the output from the 9-der 19 and sequentially outputs the signal to the recording section 2. Furthermore, the output from the buffer memory 2o is output to the comparator circuit 21 with a delay of % rotary shelf. When the signal is transmitted to the recording unit 2 for a long time, a light beam corresponding to the signal is emitted from the light source 4a, and the beam sinter 5
a, is reflected and deflected by a total reflection mirror 6a, becomes a minute spot by an objective lens 7a, and is focused onto an outer recording area 17 of the recording medium 1. Further, a part of the potential beam is reflected by the recording medium 1, passes through the objective lens 7a and the total reflection mirror 6a, and is split by the beam splitter 5a. The divided luminous flux is guided to a light receiving element 10a through a spherical lens 8a and a cylindrical lens 9a. Incidentally, known automatic focus control is performed in combination with the spherical lens 8a and the cylindrical lens 9a. At this time, the recording section 2 is moved to the outer recording area 1 by the drive motor 15a.
The information on the recording section 2 is sequentially recorded from the outermost circumference to the innermost circumference of the outer circumference side recording area 17. On the other hand, in order to sequentially reproduce the information recorded on the outer periphery (ltll recording area 17), a light beam is continuously emitted from the light 6f4b in the reproduction section 3 due to the delay of the rotation shelf of the recording medium 1. The section 3 is minutely fed by the drive motor 5b from the outermost circumference to the innermost circumference of the outer circumferential side recording area 17. A light beam (output intensity weaker than that of the light source 4a) is continuously emitted from the light source 4b. The information recorded on the recording medium 1 is sequentially reproduced by known means.The information reproduced by the reproduction section 3 is sequentially outputted to the comparison circuit 21.The comparison circuit 21 receives the output from the reproduction section 3. The level is compared with the output level from the buffer memory 20. For example, if the output level of the buffer memory 20 and the output level from the playback unit 3 are uneven, a high level signal is output from the buffer memory 20. If the output level is the same as the output level from the reproduction section 3, a low level signal is output to the error rate detector 22.The error rate detector 22 outputs a high level signal for each line, for example. If the ratio of It is re-recorded onto medium 1. Also,
If the ratio of high-level signals for each line is below a predetermined value, it is determined that recording is normal, and the buffer memory 20 is instructed to clear the storage of information for y (cr) lines. At this time, if print output is desired, one line of information stored in the backup memory 20 is transferred to the printer 23 and printed by the printer 23. Next, the time of reproduction will be explained. Outer recording area 17
A case will be described in which information recorded on the outermost and innermost circumferences is printed out. By the drive motor 5b (1
The first raw section 3 is sent to the outermost circumference (innermost circumference) of the outer circumference A rule recording area 17, and first reproduces the information on the outermost circumference (innermost circumference) while being slightly advanced by the drive motor 5b, and when the reproduction is finished, It is again sent to the innermost circumference (l outer circumference) by the drive motor 5I at a faster speed than during reproduction, and the information on the innermost circumference (outermost circumference) is reproduced. If there is an instruction to print out only part of the information, the reproduction unit 3 reproduces the information while editing it, for example, in the order of pages or in the order of necessary information, as described above. The reproduction editing information is sequentially output to the printer 23,
A portion of 4 prints are output from the printer 23. Also,
If a plurality of copies of the information are to be printed out, the reproduction editing information from the reproduction section 3 is sequentially output to the recording section 2. At this time, the recording section 2 is sent by the drive motor 15a to the outermost circumference (innermost circumference) of the inner circumferential side recording area 18 at a faster speed than during recording. When the playback editing information is input, a light beam corresponding to the information is emitted from the light source 4a in the recording section 2, and thereby the innermost circumference (outermost circumference) from the outermost circumference (innermost circumference) of the inner circumference side recording area 18 ) direction drive motor 15
The images are sequentially recorded while being minutely fed by a. When the reproducing section 3 finishes reproducing the information on the outermost and innermost circumferences of the outer recording area 17, it is sent to the outermost circumference (innermost circumference) of the inner circumference side recording area 18 by the drive motor 15b, and the information on the innermost circumference is The information on the side recording area 18 is reproduced again. , this θ) time 11
]Living! Fi11 work should be repeated multiple times (as many copies as Shinta). The information 1f) generated in this way is sequentially output to the printer 23, and a plurality of copies are printed out from the printer 23. Here, the above-mentioned information will be briefly explained using the flowchart of the information recording/reproducing apparatus shown in FIG. 4 at 111 degrees centigrade. When recording information on the recording medium 1 (step 101),
First, read the original with reader】9 (step 102)
, convert to Electricity No. 111. Part I [No. 1 is −,, −F
::! Stored in buffer memory 20 (stay knob 1
03) At the same time, the recording unit 2 records on the outer recording area 17 of the recording medium 1 (step 104). 1: The recorded joy μ is reproduced by the reproduction unit 3 (step 1
05) The comparison circuit 21 compares the information stored in the reproduction section 3 with the information stored in the Tsunoa memory 20.Step 1.06) The error rate detector 22 determines whether the information is accurately recorded. (Step 10)
7). When it is determined that there is unrecorded information (erroneous recording) (step 108), an instruction 17 is given to re-record the information stored in the Kutsunoa memory 20, and when it is determined that the information has been accurately recorded (step 108). -2 Check whether print output is instructed (step 109) in block 108). At this time, if there is no instruction to print out, the series of operations ends (step 110). Further, if there is an instruction to print out, the information recorded in the nokutsunoa memory 20 is transferred to the printer 23 (step 111),
3, the printout is performed (step 112). This completes the series of operations (step 110). When reproducing information (step 101), first check the number of copies to be printed out (step 112).
If there is an instruction to print out multiple copies, the necessary information recorded in the outer recording area 17 is reproduced and edited by the reproduction unit 3 (step 113), and the reproduction and editing information is recorded. The information is recorded in the inner recording area 18 of the recording medium 1 by the unit 2 (step 114). When the necessary information is completely recorded in the inner recording area 18 (step 105), the sono information is
1+ and 7t) continuously (multiple times) (Step 1
16). The information reproduced by the reproduction section 3 is 11! It is then output to the printer 23, and multiple copies of the information are printed out from the printer 23 (step 111). Therefore, -
The operation of j east ends (step 117). Furthermore, if it is instructed to print out only part of the information, the information recorded in the outer recording area 17 is
It is reproduced by the if-producing unit 3 (step 118) and output to the output unit 23. Therefore, from the printer 23--
)$ information is printed out (step 111), and the series of operations ends (step 119). According to this embodiment, almost at the same time as information is recorded (1t
It is possible to generate 11f of information in the raw section 3, and by comparing the output signal of the reproducing section 3, it is possible to detect erroneous recording almost at the same time as the recording, so that erroneous recording can be detected only when the information is needed. Serious accidents can be prevented. In this embodiment, the recording section 2 corresponds to the recording means of the present invention, the reproducing section 3 corresponds to the reproducing means, and the buffer memory 20 corresponds to the reproducing means.
corresponds to storage means 7, and the comparison circuit and error rate detector 22 correspond to erroneous recording detection means. As explained above, according to the present invention, the recording means and the reproducing means are configured to operate independently, respectively.
a storage means for temporarily storing information recorded by the recording means; A record detection means is provided, and at the time of record Gζ,
Since erroneous recording is detected by reproducing at the same time as recording, erroneous recording can be determined at the same time as recording. FIG. 1 is a perspective view showing a recording section of an information recording and reproducing apparatus showing an embodiment of the present invention. FIG. Information recording and reproducing device i4i's block ``1st figure, pa 4th figure t, <'
17'? Report record [j Ugo 7;, ljT's Norobuya
- FIG. 1.--recording medium, 2...l''11.'+recording section, 3.
. . . Reproducing section, 17 . . . Outer recording area, 18 . . Inner recording envelope “iJ skin, 19 . . Reader, 20 . Error rate detector, 23...Printer. Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] 1. A recording means for recording information on a recording medium using a light beam, and a reproducing means for reproducing information from the recording medium using a light beam are installed in an information recording and reproducing apparatus (1 meter apart), and the recording means and the A storage means for temporarily storing information recorded by the recording means, and a reproducing means configured to operate independently of each other; The information stored in the F storage means and the information record f11 raw f/ which is characterized by "!1" were provided as an erroneous record detection means for detecting the iiF+ record.