CN202617180U - Mobile phone with intercommunication function - Google Patents
Mobile phone with intercommunication function Download PDFInfo
- Publication number
- CN202617180U CN202617180U CN 201220108415 CN201220108415U CN202617180U CN 202617180 U CN202617180 U CN 202617180U CN 201220108415 CN201220108415 CN 201220108415 CN 201220108415 U CN201220108415 U CN 201220108415U CN 202617180 U CN202617180 U CN 202617180U
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- CN
- China
- Prior art keywords
- mobile phone
- circuit module
- earphone
- comparison circuit
- intercommunication
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a mobile phone with an intercommunication function, which comprises a mobile phone earphone for intercommunication and a mobile phone body. The mobile phone body comprises an intercommunication circuit equipped on a main board and cooperating with the mobile phone earphone. The intercommunication circuit comprises a comparison circuit module for voltage comparison, an adjusting circuit module for adjusting the reference voltage of the comparison circuit module, a PTT signal circuit module for inputting PTT signals, and an earphone microphone signal input end. The mobile phone earphone comprises an answering button where a resistor is serially connected. The mobile phone with an intercommunication function achieves the intercommunication function of the mobile phone earphone without adding interfaces and extra earphone PTT buttons and reducing earphone sound channels.
Description
Technical field
The utility model relates to a kind of mobile phone, relates in particular to a kind of mobile phone with intercommunication function.
Background technology
Intercom is a kind of communication apparatus of single worker's communication, and its transmit status depends on a button that is called " PTT ", requires just can send out voice signal in time that PTT continues to press.The earphone intercommunication function implementation of present intercom product on the market generally is following two kinds: 1, two earphone interfaces are provided on the mainboard, realize PTT so that the more data interface to be provided; The single earpiece sound channel realizes PTT to save a data interface.Preceding kind mode need provide more earphone interface, back kind mode, and its sound channel is influenced.
The utility model content
The technical problem that the utility model solves is: make up a kind of mobile phone with intercommunication function, overcoming prior art needs more plurality of earphone interface and the affected technical problem of sound channel.
The technical scheme of the utility model is: make up a kind of mobile phone with intercommunication function; Comprise the handset earphone and the mobile phone body that are used for intercommunication; Said mobile phone body comprises and is arranged on the talkback circuit that cooperates with said handset earphone on the mainboard; Said talkback circuit comprises the regulating circuit module of regulating said comparison circuit module reference voltage, carries out voltage ratio comparison circuit module, PTT signal circuit module, the ear microphone signal input part of input PTT signal; Said handset earphone comprises answers button, answers series resistance on the button said.
The further technical scheme of the utility model is: said regulating circuit is the resistance of series connection; Produce the stable benchmark voltage signal through resistance series connection dividing potential drop and output to said comparison circuit module; This series resistance connects the power voltage terminal of said PTT signal circuit module and said comparison circuit module, and said ear microphone signal input part connects the negative relatively input of said comparison circuit module.
The further technical scheme of the utility model is: said ear microphone signal input part connects the negative relatively input of said comparison circuit module behind diode, said ear microphone signal input part connects the forward of said diode.
The technique effect of the utility model is: make up a kind of mobile phone with intercommunication function; Comprise the handset earphone and the mobile phone body that are used for intercommunication; Said mobile phone body comprises and is arranged on the talkback circuit that cooperates with said handset earphone on the mainboard; Said talkback circuit comprises the regulating circuit module of regulating said comparison circuit module reference voltage, carries out voltage ratio comparison circuit module, PTT signal circuit module, the ear microphone signal input part of input PTT signal; Said handset earphone comprises answers button, answers series resistance on the button said.The present invention realizes not increasing interface through making up a kind of mobile phone with intercommunication function, does not reduce the earphone number of channels, does not increase extra earphone PTT button, realizes the intercom function of handset earphone.
Description of drawings
Fig. 1 is the utility model cell phone mainboard talkback circuit figure.
Fig. 2 is the utility model handset earphone circuit diagram.
Embodiment
Below in conjunction with specific embodiment, the utility model technical scheme is further specified.
Like Fig. 1, shown in Figure 2; The technical scheme of the utility model is: make up a kind of mobile phone with intercommunication function; Comprise the handset earphone and the mobile phone body that are used for intercommunication; Said mobile phone body comprises and is arranged on the talkback circuit that cooperates with said handset earphone on the mainboard; Said talkback circuit comprises the regulating circuit module 1 of regulating said comparison circuit module reference voltage, carries out voltage ratio comparison circuit module 2, PTT signal circuit module 3, the ear microphone signal input part 4 of input PTT signal, and said handset earphone comprises answers button 5, answers series resistance on the button 5 said.
Like Fig. 1, shown in Figure 2; The preferred implementation of the utility model is: said regulating circuit is the resistance of series connection; Produce the stable benchmark voltage signal through resistance series connection dividing potential drop and output to said comparison circuit module; This series resistance connects the power voltage terminal of said PTT signal circuit module and said comparison circuit module, and said ear microphone signal input part connects the negative relatively input of said comparison circuit module.In the specific embodiment; Said regulating circuit is resistance R 1, the resistance R 2 of series connection; One of which end ground connection; The intermediate ends A of this series resistance R1, resistance R 2 meets the just relatively input N+ of said comparison circuit module 2, and the outer end B of this series resistance R1, resistance R 2 connects the power voltage terminal of said PTT signal circuit module 3 and said comparison circuit module 2, and said ear microphone signal input part 4 meets the negative relatively input N-of said comparison circuit module 2.
Like Fig. 1, shown in Figure 2, the practical implementation process is: after handset earphone inserted mobile phone body, the user pressed earphone keystroke 5; Because the resistance R 3 of series connection exists, produce the stable benchmark voltage signal through resistance series connection dividing potential drop and be given to comparison circuit module 2, comparison circuit module 2 is a voltage comparator; Microphone still can obtain the required dividing potential drop of work, still has speech data and spreads out of, because this dividing potential drop exists; Cause system can not discern this signal, itself should be logic low signal, at this moment; Said comparison circuit module 2 work change this dividing potential drop, and the discernible logic high low signal of the system that is converted into changes; This changes at 6 places realizes, and then controls triode Q2101 and open and turn-off, and realizes that finally the PTT signal produces. realize the PTT function.
As shown in Figure 1; The preferred implementation of the utility model is: said ear microphone signal input part connects the negative relatively input of said comparison circuit module behind diode; Said ear microphone signal input part connects the forward of said diode, and this diode is used for preventing the communication process cross-talk.
The technique effect of the utility model is: make up a kind of mobile phone with intercommunication function; Comprise the handset earphone and the mobile phone body that are used for intercommunication; Said mobile phone body comprises and is arranged on the talkback circuit that cooperates with said handset earphone on the mainboard; Said talkback circuit comprises the regulating circuit module 1 of regulating said comparison circuit module reference voltage, carries out voltage ratio comparison circuit module 2, PTT signal circuit module 3, the ear microphone signal input part 4 of input PTT signal; Said handset earphone comprises answers button 5, answers series resistance on the button 5 said.The present invention realizes not increasing interface through making up a kind of mobile phone with intercommunication function, does not reduce the earphone number of channels, does not increase extra earphone PTT button, realizes the intercom function of handset earphone.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (3)
1. mobile phone with intercommunication function; Comprise the handset earphone and the mobile phone body that are used for intercommunication; Said mobile phone body comprises and is arranged on the talkback circuit that cooperates with said handset earphone on the mainboard; Said talkback circuit comprises the regulating circuit module of carrying out comparison circuit module of voltage ratio, regulating said comparison circuit module reference voltage, PTT signal circuit module, the ear microphone signal input part of input PTT signal; Said handset earphone comprises answers button, answers series resistance on the button said.
2. according to the mobile phone of the said band intercommunication function of claim 1; It is characterized in that; Said regulating circuit is the resistance of series connection; Produce the stable benchmark voltage signal through resistance series connection dividing potential drop and output to said comparison circuit module, this series resistance connects the power voltage terminal of said PTT signal circuit module and said comparison circuit module, and said ear microphone signal input part connects the negative relatively input of said comparison circuit module.
3. according to the mobile phone of the said band intercommunication function of claim 1, it is characterized in that said ear microphone signal input part connects the negative relatively input of said comparison circuit module behind diode, said ear microphone signal input part connects the forward of said diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108415 CN202617180U (en) | 2012-03-21 | 2012-03-21 | Mobile phone with intercommunication function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108415 CN202617180U (en) | 2012-03-21 | 2012-03-21 | Mobile phone with intercommunication function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202617180U true CN202617180U (en) | 2012-12-19 |
Family
ID=47350847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220108415 Expired - Fee Related CN202617180U (en) | 2012-03-21 | 2012-03-21 | Mobile phone with intercommunication function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202617180U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731560A (en) * | 2014-01-13 | 2014-04-16 | 联想(北京)有限公司 | Electronic device and control method thereof |
| CN103986492A (en) * | 2013-02-07 | 2014-08-13 | 利汇科技股份有限公司 | Intelligent radio system |
| CN104601962A (en) * | 2015-02-05 | 2015-05-06 | 深圳市星谷科技有限公司 | Audio/video transmission talkback system and method based on universal serial bus |
-
2012
- 2012-03-21 CN CN 201220108415 patent/CN202617180U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986492A (en) * | 2013-02-07 | 2014-08-13 | 利汇科技股份有限公司 | Intelligent radio system |
| CN103731560A (en) * | 2014-01-13 | 2014-04-16 | 联想(北京)有限公司 | Electronic device and control method thereof |
| CN103731560B (en) * | 2014-01-13 | 2016-07-06 | 联想(北京)有限公司 | A kind of electronic equipment and control method thereof |
| CN104601962A (en) * | 2015-02-05 | 2015-05-06 | 深圳市星谷科技有限公司 | Audio/video transmission talkback system and method based on universal serial bus |
| CN104601962B (en) * | 2015-02-05 | 2018-08-31 | 深圳市星谷科技有限公司 | Audio video transmission intercom system based on universal serial bus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121219 Termination date: 20180321 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |