CN201336735Y

CN201336735Y - Mobile phone with talkback function

Info

Publication number: CN201336735Y
Application number: CNU2008202141536U
Authority: CN
Inventors: 徐溟皓
Original assignee: SHENZHEN LONGYU SHIJI TECHNOLOGY Co Ltd
Current assignee: Shenzhen Jinli Communication Equipment Co Ltd
Priority date: 2008-12-01
Filing date: 2008-12-01
Publication date: 2009-10-28
Anticipated expiration: 2018-12-01

Abstract

The utility model discloses a mobile phone with a talkback function, which comprises a mobile phone casing, a display screen and a mobile phone main board mounted in the mobile phone casing, wherein, a CPU chip is welded on the mobile phone main board; an interphone press key and an interphone antenna are arranged on the mobile phone casing; an interphone module and an audio-frequency magnifying chip are connected to the CPU chip; received signals of external devices are input to the interphone module through the interphone antenna; the signals are processed, received and transmitted through the CPU chip; and a display menu is controlled to display the signals on the display screen. The utility model, which integrates the advantages of the mobile phone and the interphone, not only can realize real-time communication like the mobile phone without high mobile phone communication expense payment, but also can realize group communication like the interphone. Crucially, the mobile phone can solve the problem that network signals of the mobile phone are not available in some places, thereby being a very practical product.

Description

Mobile phone with intercommunication function

Technical field:

The utility model relates to mobile phone, but what be specifically related to is a kind ofly to need not to pay cost of the phone call and just can converse mutually and MPTY, can pass through the launch coordinate position again, inquires about the mobile phone with intercommunication function of own present position by the rear end inquiry system.

Background technology:

Existing GSM mobile handset communication process need realize that wherein the GSM network is generally all provided by Virtual network operator, so mobile phone needs defrayment in communication process by the GSM network.

Can adopt the GSM network to realize for remote conversation, and can adopt intercom to realize for conversation closely, and for generally speaking, the personal user can not carry intercom, therefore can only adopt mobile phone to converse, will cause the waste of resource like this.

Summary of the invention:

For addressing the above problem, the purpose of this utility model is to provide a kind of mobile phone with intercommunication function, and intercom and mobile phone are combined as a whole, and makes mobile phone closely need not to pay cost of the phone call in the conversation, can realize group call as intercom again.

A kind of mobile phone with intercommunication function, include handset shell, display screen and be installed in the interior cell phone mainboard of handset shell, be welded with cpu chip on the described cell phone mainboard, handset shell is provided with intercom button, intercom antenna, be connected with intercom module and audio frequency on the cpu chip and amplify chip, described intercom antenna inputs to the intercom module with the external equipment signal that receives, and handle reception and launch this signal by cpu chip, and the control display menu shows on display screen.

The utility model mobile phone talkback system can be divided into: mobile module, intercom module and interface module, wherein mobile module is except that the conversation that remains with common GSM mobile handset, transmitting-receiving note and management function commonly used, also be added with PTT telephone directory and PTT program, the PTT telephone directory is in charge of group and contacts list; The PTT program activates the intercom module, consults the employed frequency of conversation when needs use intercom function, the PTT program starts the intercom module at running background when the user selects to initiate or receives conversation.After the intercom module is activated, communication frequency is adjusted to designated value, if conversation each side has discussed voice frequency in advance, then can the manual adjustment frequency; Whether idle, and testing result is sent to mobile module by interface if detecting specified frequency; If a period of time by the intercom conversation, is not then closed the intercom module automatically, can manual-lock yet.

Wherein interface module is responsible for connecting mobile module and intercom module, realizes the communication of two intermodules, and its function is as follows: read SMS from the SMS inbox of mobile module; Distinguish the foundation request note of common SMS and PTT conversation, and the frequency values that will set up in the request note extracts; The intercom module frequency values that is extracted sent to the intercom module, so that can be adjusted to designated value with communication frequency.

Compared with prior art, the utility model integrates the advantage of mobile phone and intercom, can not need to pay the cell phone call charge of great number as the mobile phone immediate communication, can realize group call as intercom again, have call voice quality height, do not need operator to provide extra business to support, therefore more convenient, have more using value.

Description of drawings:

Fig. 1 is the utility model front view.

Fig. 2 is the utility model built-in system structural representation.

Fig. 3 (a) is the utility model mobile phone intercom part signal transmission circuit schematic diagram; (b) be the utility model mobile phone intercom part SPEAKER, MIC amplifier circuit for sound frequency signal schematic diagram.

Identifier declaration among the figure: handset shell 1, display screen 101, intercommunication PPT button 102, intercom antenna 103, cell phone mainboard 2, cpu chip 201, intercom medium-frequency receiving and sending module 202, audio frequency power amplifier module 203.

Embodiment:

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

As shown in Figure 1, the utility model provides a kind of mobile phone with intercommunication function, includes handset shell 1, display screen 101, intercommunication PPT button 102, intercom antenna 103, cell phone mainboard 2, cpu chip 201, intercom medium-frequency receiving and sending module 202, audio frequency power amplifier module 203.Be welded with cpu chip 201 on the wherein said cell phone mainboard 2, handset shell 1 is provided with intercommunication PPT button 102, intercom antenna 103, be connected with intercom medium-frequency receiving and sending module 202 and audio frequency power amplifier module 203 on the cpu chip 201, described intercom antenna 103 inputs to intercom medium-frequency receiving and sending module 202 with the external equipment signal that receives, handle reception and launch this signal by cpu chip 201, and the control display menu shows on display screen 101.

As shown in Figure 2, Fig. 2 is the utility model built-in system structural representation.Wherein the utility model has adopted Symbian operating system MTK 6225, Symbian with computing technique with mobile phone technological incorporation be in the same place, for general marketplace provides advanced data communication services, support various information services, have characteristics such as opening, interoperability, multitasking, stability, application interface design flexibly.At first increase the PTT program icon on main menu, show contact person and group list after entering, enter the member's tabulation that shows this group after the group, concrete class of operation is similar to the telephone directory of mobile phone.Concrete steps are as follows: after entering the PTT telephone directory, if the user has selected a conversation object, then show the cell-phone number tabulation of selected object, the user can add other objects more afterwards, presses acknowledgement key up to the user; The user by acknowledgement key after the PTT program in the communication frequency scope of intercom, generate a random frequency and a display reminding information that communicates for the intercommunication module, wait this frequency to be detected whether idle; Learn behind the result of frequency free time by the SMS outbox send a foundation request note that comprises the generated frequency value to called GSM intercom to activate called intercom module; The user also can manually import the cell-phone number of conversation object, directly sends to connect to set up the request note, and whether the recipient receives after a PTT sets up the request note and can select to converse.Need operate telephone book data during phonebook function on realizing mobile phone, the telephone directory model provides numerous functions to phonebook operations.The telephone directory model contains some address list items based on an address list database in the database, each address list item all has some territories, such as name, address and telephone number etc.The user creates the phonebook database of a sky when calling the PTT program first, in this phonebook database, add the telephone directory item of a sky again, the user can select to add some telephone directory domains of deletion then, wherein name and phone number are necessary, and the user preserves after manually having added a good friend's information.Will determine communication frequency earlier when the user will initiate to converse, this communication frequency value obtains by the mode that generates random number in the frequency range that the intercom module allows, and learns that by detection frequency sends to the recipient with the mode of frequency by SMS after the free time.

Be depicted as the utility model intercom partial circuit schematic diagram as Fig. 3 (a), 3 (b).Wherein U3 phase-locked loop and voltage controlled oscillator (VCO) produce the radio-frequency carrier signal of emission, amplify through buffering, and excitation is amplified, power amplifier, produce specified radio-frequency power, through antenna low pass filter L2, C15, suppress harmonic components, launch by antenna then.

Receiving unit: receiving unit is the double superheterodyne mode, after receiving and dispatching change-over circuit and band pass filter L11, C51, C52, C58, carry out the radio frequency amplification from the signal of antenna input, pass through the band pass filter in the U3 again, enter a mixing, will from the amplifying signal of radio frequency with from first local oscillation signal of phase-locked loop frequency synthesizer circuit in the first frequency mixer place mixing and generate first intermediate-freuqncy signal.First intermediate-freuqncy signal is further eliminated the noise signal of neighboring trace by crystal filter.Filtered first intermediate-freuqncy signal enters the intermediate frequency process chip, with the second local oscillation signal XTAL1 16.384MHz once more mixing generate second intermediate-freuqncy signal, second intermediate-freuqncy signal is exaggerated and frequency discrimination after passing through a useless spurious signal of ceramic filter filtering, produces audio signal.Audio signal enters volume control circuit and power amplifier and amplifies by LM386 amplification, band pass filter, circuit such as postemphasis, and drives loud speaker, obtains the required information of people.

Modulation signal and modulation circuit: people's speech converts the signal of telecommunication of audio frequency to by microphone, and audio signal enters voltage controlled oscillator by amplifying circuit, preemphasis circuit and band pass filter and directly modulates.

Signaling process: CPU produces the CTCSS/DTCSS signal and adjusts through amplifying, and enters voltage controlled oscillator and modulates.Receive the low frequency signal that obtains behind the frequency discrimination, a part enters CPU through amplifying and infrasonic band pass filter carries out filter shape, compares with preset value, with its output of control audio power amplifier and loud speaker as a result.If promptly identical, then open loud speaker, if difference, then mute speaker with preset value.

More than a kind of mobile phone with intercommunication function provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1, a kind of mobile phone with intercommunication function, include handset shell (1), display screen (101) and be installed in cell phone mainboard (2) in the handset shell (1), be welded with cpu chip (201) on the described cell phone mainboard (2), it is characterized in that: handset shell (1) is provided with intercom button (102), intercom antenna (103), be connected with intercom module (202) and audio frequency on the cpu chip (201) and amplify chip (203), described intercom antenna (103) inputs to intercom module (202) with the external equipment signal that receives, handle reception and launch this signal by cpu chip (201), and the control display menu is gone up demonstration at display screen (101).