CN201491091U - Digital interphone - Google Patents
Digital interphone Download PDFInfo
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- CN201491091U CN201491091U CN2009201101536U CN200920110153U CN201491091U CN 201491091 U CN201491091 U CN 201491091U CN 2009201101536 U CN2009201101536 U CN 2009201101536U CN 200920110153 U CN200920110153 U CN 200920110153U CN 201491091 U CN201491091 U CN 201491091U
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Abstract
The utility model discloses a digital interphone, which comprises a shell and a circuit part. The circuit part at least comprises a power supply circuit, a central processing unit, a digital audio coding and decoding module, a 4Level FSK modulating and demodulating module, a radio frequency receiving demodulating module, a radio frequency transmitting modulating module, a radio frequency receiving and transmitting network matching module, a radio frequency switch and an antenna, wherein the power supply circuit is used to supply power to modular circuits, the central processing unit is used to control functions, the digital audio coding and decoding module is connected with the central processing unit, the 4Level FSK modulating and demodulating module is connected with the central processing unit, the radio frequency receiving demodulating module and the radio frequency transmitting modulating module are connected with the 4Level FSK modulating and demodulating module, the radio frequency receiving and transmitting network matching module is connected with the radio frequency receiving demodulating module and the radio frequency transmitting modulating module, the radio frequency switch is connected with the radio frequency receiving and transmitting network matching module, the antenna is connected with the radio frequency switch, and the radio frequency receiving demodulating module and the radio frequency transmitting modulating module are connected and controlled by a phase lock loop. The utility model has the advantages that the voice confidentiality and the functional diversity are enhanced on the premise that the minimum bandwidth is occupied by the interphone.
Description
Technical field
The utility model relates to wireless communication field, relates in particular to a kind of digital handset.
Background technology
In recent years, radio communication already develops rapidly, but with regard to this field of intercom, develops slow relatively.At present domestic intercom is still occupied an leading position with traditional intercom and simulation intercom.These intercom functions commonly used are single, voice security is poor, speech quality is poor, and this technology is obviously can't satisfy the demand of existing customer colony.Chinese patent application number is that 200610139142.1 patent has provided a kind of digital intercom, and it has solved a lot of problems, but it is relatively low to bandwidth utilization.
In summary, the intercom of described prior art obviously exists inconvenience and defective, so be necessary to be improved on reality is used.
The utility model content
At above-mentioned defective, the purpose of this utility model is to provide a kind of digital handset, it can realize voice digitization function, SMS, data transport functions, encryption function and frequency hopping function, can also strengthen the confidentiality of speech when taking minimum bandwidth.
To achieve these goals, the utility model provides a kind of digital handset, and it comprises housing and circuit part, and described circuit part comprises at least:
Be used to each modular circuit that the power circuit of power supply is provided, the central processing unit that is used for controlled function, the digital audio coding/decoding module that is connected with described central processing unit, the 4Level FSK modulation module that is connected with described central processing unit, the radio frequency receiving demodulation module and the radio-frequency transmissions modulation module that are connected with described 4Level FSK modulation module, the radio-frequency receiving-transmitting network matching module that all is connected with described radio frequency receiving demodulation module and radio-frequency transmissions modulation module, with described radio-frequency receiving-transmitting network matching module radio-frequency (RF) switch that is connected and the antenna that is connected with described radio-frequency (RF) switch, described radio frequency receiving demodulation module is connected control with the radio-frequency transmissions modulation module by a phase-locked loop.
According to digital handset of the present utility model, described digital audio coding/decoding module is a CMX618 digital audio coding/decoding module.
According to digital handset of the present utility model, described digital audio coding/decoding module is a CMX638 digital audio coding/decoding module.
According to digital handset of the present utility model, described circuit part also comprises the voice collecting device that is used to gather voice, and described voice collecting device is connected in described digital audio coding/decoding module.
According to digital handset of the present utility model, described circuit part also comprises the audio frequency power amplifier module that is used to realize playback, and described audio frequency power amplifier module is connected with described digital audio coding/decoding module, and is connected with a loud speaker.
According to digital handset of the present utility model, described radio frequency receiving demodulation module comprises high amplification module, mixting circuit module, reception voltage-controlled oscillator and the demodulation module that connects by holding wire, and described radio-frequency transmissions modulation module comprises emission voltage-controlled oscillator, stimulating module and the power amplifier module that connects by holding wire.
According to digital handset of the present utility model, described demodulation module all is connected with described 4Level FSK modulation module with the emission voltage-controlled oscillator.
According to digital handset of the present utility model, described high amplification module all is connected with described radio-frequency receiving-transmitting network matching module with power amplifier module.
According to digital handset of the present utility model, described circuit part also comprises display circuit, keyboard circuit and serial port circuit, and described display circuit, keyboard circuit and serial port circuit all are connected in described central processing unit.
According to digital handset of the present utility model, described display circuit is the LCD display circuit.
The utility model provides power supply by a power circuit to entire circuit, realize the function control of circuit by a central processing unit, and the intercom circuit is established a digital audio coding/decoding module and has been realized voice digitization, if a 4Level FSK modulation module has realized SMS of the present utility model, data transport functions, encryption function and frequency hopping function, make intercom when taking minimum bandwidth, strengthen the confidentiality of speech.
Description of drawings
Fig. 1 is the circuit structure diagram of the utility model digital handset;
Fig. 2 is the circuit structure diagram of the utility model digital handset one embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the circuit structure of the utility model digital handset, and this digital handset comprises housing and circuit part, and according to Fig. 1, its circuit part comprises at least:
One power circuit 100 is used to each modular circuit that power supply is provided;
One central processing unit 40 is used to realize the function control of the integral body of circuit;
One digital audio coding/decoding module 30 is connected with central processing unit 40, is used for signal is carried out D-A or A-D conversion, and realizes the coding or the decoding of speech data;
One 4Level FSK modulation module 50 is connected with central processing unit 40, is used for voice signal data is modulated or demodulation, wherein takies very little bandwidth in the course of work, has improved the utilization rate of bandwidth whereby;
One radio frequency receiving demodulation module 60 is connected with 4Level FSK modulation module 50;
One radio-frequency transmissions modulation module 61 is connected with 4Level FSK modulation module 50, and radio frequency receiving demodulation module 60 is connected control with radio-frequency transmissions modulation module 61 by a phase-locked loop;
One radio-frequency receiving-transmitting network matching module 70 is connected with radio-frequency transmissions modulation module 61 with radio frequency receiving demodulation module 60, is used for speech data is mated, and receives or send radiofrequency signal by antenna 90.
One radio-frequency (RF) switch 80 that is connected with radio-frequency receiving-transmitting network matching module 70 and an antenna 90 that is connected with radio-frequency (RF) switch 80.
The utility model is realized the digitlization of voice signal by digital audio coding/decoding module 30, realize SMS, data transport functions, encryption function and the frequency hopping function of intercom by 4Level FSK modulation module 50, and make intercom when taking minimum bandwidth, strengthen the confidentiality and the function diversity of speech.
Preferably, digital audio coding/decoding module 30 is CMX618 digital audio coding/decoding module or CMX638 digital audio coding/decoding module.When selecting the work of CMX618 digital audio coding/decoding module for use, the conversation of intercom is single worker's pattern; When selecting the work of CMX638 digital audio coding/decoding module for use, the conversation of intercom is a dual-mode.The user can select the intercom of different working modes according to demand whereby.
Preferably, radio frequency receiving demodulation module 60 comprises the high amplification module that connects successively by holding wire, the RXVCO (reception voltage-controlled oscillator) of mixting circuit module and demodulation module and participation data mixer action, radio-frequency transmissions modulation module 61 comprises the TXVCO (emission voltage-controlled oscillator) that connects successively by holding wire, stimulating module and power amplifier module, demodulation module all is connected with described 4Level FSK modulation module 50 with the emission voltage-controlled oscillator, high amplification module all is connected with described radio-frequency receiving-transmitting network matching module 70 with power amplifier module, as shown in Figure 2, can realize the bi-directional of speech data in circuit whereby.
Preferably, the circuit part of intercom also comprises the audio frequency power amplifier module 10 that is used to gather the voice collecting device 20 of voice and is used to realize playback, audio frequency power amplifier module 10 connects a loud speaker, and voice collecting device 20 and audio frequency power amplifier module 10 all are connected in digital audio coding/decoding module 30.
Preferably, the circuit part of intercom also comprises display circuit, keyboard circuit and serial port circuit, and described display circuit, keyboard circuit and serial port circuit all are connected in described central processing unit 40, as shown in Figure 2.Preferably, display circuit is the LCD display circuit.
The transmitting-receiving process of the utility model digitlization intercom is described below in conjunction with Fig. 1 and Fig. 2.
The process that the digitlization intercom signals is: voice collecting device 20 is gathered voice and voice signal is passed to digital audio coding/ decoding module 30,30 pairs of voice signals that collect of digital audio coding/decoding module are sampled, the A-D conversion, compressed encoding, and the audio data stream after will compressing sends to central processing unit 40, central processing unit 40 passes to 4Level FSK modulation module 50 with compressed voice data flow to be sent and modulates, and the signal after will modulating passes to radio-frequency transmissions modulation module 61, carries out frequency match via radio-frequency receiving-transmitting network matching module 70 again through after the power amplification, and then launch through radio-frequency (RF) switch 80 and antenna 90.
The process that the digitlization intercom is collected mail number is: by antenna 90 received RF signals, behind radio-frequency (RF) switch 80 and radio-frequency receiving-transmitting network matching module 70, be sent to the high amplification module of radio frequency receiving demodulation module 60, carry out demodulation through being sent to 4Level FSK modulation module 50 by the signal of demodulation module after after the mixting circuit module again with demodulation, speech data after the demodulation delivered to send digital audio coding/decoding module 30 to after central processing unit 40 is handled and decode, and decoded signal is carried out D-A change, obtain voice signal, carry out speech play by audio frequency power amplifier module 10 then.
In sum, the utility model provides power supply by a power circuit to entire circuit, realize the function control of circuit by a central processing unit, and the intercom circuit is established a digital audio coding/decoding module and has been realized voice digitization, if a 4Level FSK modulation module has realized SMS of the present utility model, data transport functions, encryption function and frequency hopping function, make intercom when taking minimum bandwidth, strengthen the confidentiality of speech.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (10)
1. digital handset, comprise housing and circuit part, it is characterized in that, described circuit part comprises at least, be used to each modular circuit that the power circuit of power supply is provided, the central processing unit that is used for controlled function, the digital audio coding/decoding module that is connected with described central processing unit, the 4Level FSK modulation module that is connected with described central processing unit, the radio frequency receiving demodulation module and the radio-frequency transmissions modulation module that are connected with described 4Level FSK modulation module, the radio-frequency receiving-transmitting network matching module that all is connected with described radio frequency receiving demodulation module and radio-frequency transmissions modulation module, with described radio-frequency receiving-transmitting network matching module radio-frequency (RF) switch that is connected and the antenna that is connected with described radio-frequency (RF) switch, described radio frequency receiving demodulation module is connected control with the radio-frequency transmissions modulation module by a phase-locked loop.
2. digital handset according to claim 1 is characterized in that, described digital audio coding/decoding module is a CMX618 digital audio coding/decoding module.
3. digital handset according to claim 1 is characterized in that, described digital audio coding/decoding module is a CMX638 digital audio coding/decoding module.
4. digital handset according to claim 1 is characterized in that, described circuit part also comprises the voice collecting device that is used to gather voice, and described voice collecting device is connected in described digital audio coding/decoding module.
5. digital handset according to claim 1 is characterized in that described circuit part also comprises the audio frequency power amplifier module that is used to realize playback, and described audio frequency power amplifier module is connected with described digital audio coding/decoding module, and is connected with a loud speaker.
6. digital handset according to claim 1, it is characterized in that, described radio frequency receiving demodulation module comprises high amplification module, mixting circuit module, reception voltage-controlled oscillator and the demodulation module that connects by holding wire, and described radio-frequency transmissions modulation module comprises emission voltage-controlled oscillator, stimulating module and the power amplifier module that connects by holding wire.
7. digital handset according to claim 6 is characterized in that, described demodulation module all is connected with described 4Level FSK modulation module with the emission voltage-controlled oscillator.
8. digital handset according to claim 6 is characterized in that, described high amplification module all is connected with described radio-frequency receiving-transmitting network matching module with power amplifier module.
9. digital handset according to claim 1 is characterized in that described circuit part also comprises display circuit, keyboard circuit and serial port circuit, and described display circuit, keyboard circuit and serial port circuit all are connected in described central processing unit.
10. digital handset according to claim 9 is characterized in that, described display circuit is the LCD display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201101536U CN201491091U (en) | 2009-07-21 | 2009-07-21 | Digital interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201101536U CN201491091U (en) | 2009-07-21 | 2009-07-21 | Digital interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201491091U true CN201491091U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201101536U Expired - Fee Related CN201491091U (en) | 2009-07-21 | 2009-07-21 | Digital interphone |
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| CN (1) | CN201491091U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098378A (en) * | 2010-12-14 | 2011-06-15 | 深圳桑菲消费通信有限公司 | System for realizing point-to-point wireless data transmission of mobile phone, and method therefor |
| CN102487464A (en) * | 2010-12-06 | 2012-06-06 | 张文 | Civil confidential frequency hopping interphone |
| CN102611478A (en) * | 2012-03-21 | 2012-07-25 | 天津七一二通信广播有限公司 | Digital interphone with sound recording function |
| CN102821204A (en) * | 2012-08-10 | 2012-12-12 | 南京森林警察学院 | Portable multimedia communication device and application of portable multimedia communication device |
| CN102932028A (en) * | 2012-10-26 | 2013-02-13 | 泉州市铁通电子设备有限公司 | Multi-frequency wireless digital-analog compatible mobile communication device and communication system thereof |
| CN102957448A (en) * | 2012-11-14 | 2013-03-06 | 华侨大学 | Digital interphone with Bluetooth function |
| CN104320152A (en) * | 2014-11-18 | 2015-01-28 | 成都博盛信息技术有限公司 | Digital interphone |
| CN104468441A (en) * | 2013-09-13 | 2015-03-25 | 福建联拓科技有限公司 | Signal coding and modulating method and device for digital interphone, signal demodulating and decoding method and device for digital interphone |
| CN105763218A (en) * | 2016-04-13 | 2016-07-13 | 国家电网公司 | DMR data signal transfer circuit |
| WO2018068428A1 (en) * | 2016-10-12 | 2018-04-19 | 余潇 | Wireless digital frequency-hopping two-way radio working in ism band |
| CN109451372A (en) * | 2018-12-29 | 2019-03-08 | 广州市森锐科技股份有限公司 | A kind of digital intercom machine control system |
-
2009
- 2009-07-21 CN CN2009201101536U patent/CN201491091U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487464A (en) * | 2010-12-06 | 2012-06-06 | 张文 | Civil confidential frequency hopping interphone |
| CN102098378A (en) * | 2010-12-14 | 2011-06-15 | 深圳桑菲消费通信有限公司 | System for realizing point-to-point wireless data transmission of mobile phone, and method therefor |
| CN102611478A (en) * | 2012-03-21 | 2012-07-25 | 天津七一二通信广播有限公司 | Digital interphone with sound recording function |
| CN102821204A (en) * | 2012-08-10 | 2012-12-12 | 南京森林警察学院 | Portable multimedia communication device and application of portable multimedia communication device |
| CN102932028A (en) * | 2012-10-26 | 2013-02-13 | 泉州市铁通电子设备有限公司 | Multi-frequency wireless digital-analog compatible mobile communication device and communication system thereof |
| CN102957448A (en) * | 2012-11-14 | 2013-03-06 | 华侨大学 | Digital interphone with Bluetooth function |
| CN104468441A (en) * | 2013-09-13 | 2015-03-25 | 福建联拓科技有限公司 | Signal coding and modulating method and device for digital interphone, signal demodulating and decoding method and device for digital interphone |
| CN104320152A (en) * | 2014-11-18 | 2015-01-28 | 成都博盛信息技术有限公司 | Digital interphone |
| CN105763218A (en) * | 2016-04-13 | 2016-07-13 | 国家电网公司 | DMR data signal transfer circuit |
| WO2018068428A1 (en) * | 2016-10-12 | 2018-04-19 | 余潇 | Wireless digital frequency-hopping two-way radio working in ism band |
| CN109451372A (en) * | 2018-12-29 | 2019-03-08 | 广州市森锐科技股份有限公司 | A kind of digital intercom machine control system |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20150721 |
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| EXPY | Termination of patent right or utility model |