CN2737090Y - Audio telephone set conversion box - Google Patents
Audio telephone set conversion box Download PDFInfo
- Publication number
- CN2737090Y CN2737090Y CN 200420096227 CN200420096227U CN2737090Y CN 2737090 Y CN2737090 Y CN 2737090Y CN 200420096227 CN200420096227 CN 200420096227 CN 200420096227 U CN200420096227 U CN 200420096227U CN 2737090 Y CN2737090 Y CN 2737090Y
- Authority
- CN
- China
- Prior art keywords
- unit
- interface unit
- signal
- signal conversion
- landline telephone
- Prior art date
- 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
Links
Images
Landscapes
- Telephone Function (AREA)
Abstract
The utility model discloses an audio telephone set conversion box. The utility model comprises a telephone interface unit, a line switch unit, a signal transmission unit, a signal gain and adjustment unit, an audio interface unit and an interface unit of telephone network, wherein, the telephone interface unit connects with the line switch unit, one end of the line switch unit connects with the signal transmission unit, the other end of the line switch unit connects with the interface unit of telephone network, one end of the signal transmission unit connects with the line switch unit, the other end of the signal transmission unit connects with the signal gain unit, one end of the signal gain and adjustment unit connects with the signal transmission unit, the other end of the signal gain and adjustment unit connects with the audio interface unit, one end of the audio interface unit connects with an audio input/ output end of a mobile phone, and the other end of the audio interface unit connects with the signal gain and adjustment unit. The utility model can receive signals from mobile phones via telephones. Thus, harm from electromagnetic waves of mobile phones to people is reduced to the lowest level. In addition, the audio telephone set conversion box is suitable to other audio equipment, comprising sound recording devices, audio and video equipment and sound cards.
Description
Technical field
The utility model relates to the device that a kind of conversation with speech ciphering equipments such as mobile phone and sound cards is converted to the landline telephone conversation.
Background technology
Mobile phone is one of requisite communication tool in our daily life, although mobile phone brings a lot of convenience for our daily life, yet the mobile phone electromagnetic wave radiation is a problem that can not be ignored.Though number of research projects has been done to head it off by each big mobile phone manufacturer, still effect is very little as things go.In addition, it is also more and more general to adopt headset to beat IP phone by sound card at present, but this talking mode and do not meet people's conversation custom.
The utility model content
Problem at above-mentioned existence, the purpose of this utility model is to provide a kind of audio frequency phone boxcar, this device can be converted to mobile phone communication the landline telephone conversation, to reduce the harm of mobile phone electromagnetic wave radiation, also the conversation of speech ciphering equipments such as sound card can be converted to the landline telephone conversation to human body.
For achieving the above object, a kind of audio frequency phone of the utility model boxcar comprises landline telephone interface unit, circuit switch unit, signal conversion unit, signal gain adjustment unit, speech interface unit and fixed-line phone network interface unit; Wherein,
One landline telephone interface unit can insert landline telephone, and this landline telephone interface unit links to each other with the circuit switch unit;
One circuit switch unit can switch to landline telephone and fixed-line phone network connection status and the mobile phone connection status, one termination signal conversion unit, another termination fixed-line phone network interface unit;
One signal conversion unit, the electrical signal conversion that landline telephone is exported is analog signal output, maybe the analog signal conversion with input is that the signal of telecommunication outputs to landline telephone, one termination circuit switch unit, another termination signal gain unit;
One signal gain adjustment unit, be input to described signal conversion unit after the analog signal amplification with the output of described speech interface unit, or be input to described speech interface unit after the analog signal amplification with described signal conversion unit output, the one end links to each other with signal conversion unit, and the other end links to each other with the speech interface unit;
One speech interface unit, the one end links to each other with the phonetic entry/output of speech ciphering equipment, and the other end links to each other with signal gain adjustment unit.
Further, described signal conversion unit comprises a transistor.
Further, described signal gain adjustment unit comprises an operational amplifier and a differential operational amplifier, described operational amplifier is input to described signal conversion unit after the analog signal of described speech interface unit output is amplified, and described differential operational amplifier is input to described speech interface unit after the analog signal of described signal conversion unit output is amplified.
Advantage of the present utility model is:
No matter in office still indoor, the caller can answer the signal of mobile phone by landline telephone, therefore can reduce to minimum to people's harm the mobile phone electromagenetic wave radiation.In addition, the utility model can also be applicable to other speech ciphering equipment, comprises the recording instrument, audio and video equipment, sound card etc.
Description of drawings
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is a circuit structure diagram of the present utility model.
Embodiment:
As shown in Figure 1, 2, the utility model comprises landline telephone interface unit 3, circuit switch unit 1, signal conversion unit 4, signal gain adjustment unit 2, speech interface unit 5 and fixed-line phone network interface unit 6; Wherein,
Landline telephone interface unit 3 can insert landline telephone, and this landline telephone interface unit 3 links to each other with circuit switch unit 1;
Circuit switch unit 1 can switch to landline telephone and fixed-line phone network connection status and the mobile phone connection status, one termination signal conversion unit 4, another termination fixed-line phone network interface unit 6;
Signal conversion unit 4, comprise a transistor Q1, the electrical signal conversion that landline telephone is exported is analog signal output, and maybe the analog signal conversion with input is that the signal of telecommunication outputs to landline telephone, one termination circuit switch unit 1, another termination signal gain unit 4;
Signal gain adjustment unit 2, comprise an operational amplifier A 2 and a differential operational amplifier A1, operational amplifier A 2 is input to signal conversion unit 4 after the analog signal of speech interface unit 5 outputs is amplified, differential operational amplifier A1 is input to speech interface unit 5 after the analog signal of signal conversion unit 4 outputs is amplified, signal gain adjustment unit 2 one ends link to each other with signal conversion unit 4, and the other end links to each other with speech interface unit 5;
Speech interface unit 5, the one end links to each other with the phonetic entry/output of mobile phone, and the other end links to each other with signal gain adjustment unit 2.
During the utility model work, defeated 11 outputs of the voice of mobile phone are linked to each other with speech interface unit 5, when incoming call, circuit switch unit 2 is switched to the state that landline telephone is connected with mobile phone, the analog signal of mobile phone is by 5 inputs of speech interface unit, adjust gain via operational amplifier A 2, after will being amplified by transistor Q1, signal is coupled on the telephone line again; With last opposite, the analog signal on the telephone line outputs to speech interface unit 5 with the signal after amplifying after adjusting gain via differential operational amplifier A1, has realized between landline telephone and the mobile phone independently interactive voice.
In addition, speech interface unit 5 also can insert other speech ciphering equipment, comprises recording instrument, audio and video equipment, sound card etc.
Claims (3)
1, a kind of audio frequency phone boxcar is characterized in that, comprises landline telephone interface unit, circuit switch unit, signal conversion unit, signal gain adjustment unit, speech interface unit and fixed-line phone network interface unit; Wherein,
One landline telephone interface unit can insert landline telephone, and this landline telephone interface unit links to each other with the circuit switch unit;
One circuit switch unit can switch to landline telephone and fixed-line phone network connection status and the mobile phone connection status, one termination signal conversion unit, another termination fixed-line phone network interface unit;
One signal conversion unit, the electrical signal conversion that landline telephone is exported is analog signal output, maybe the analog signal conversion with input is that the signal of telecommunication outputs to landline telephone, one termination circuit switch unit, another termination signal gain unit;
One signal gain adjustment unit, be input to described signal conversion unit after the analog signal amplification with the output of described speech interface unit, or be input to described speech interface unit after the analog signal amplification with described signal conversion unit output, the one end links to each other with signal conversion unit, and the other end links to each other with the speech interface unit;
One speech interface unit, the one end links to each other with the phonetic entry/output of speech ciphering equipment, and the other end links to each other with signal gain adjustment unit.
2, a kind of audio frequency phone boxcar according to claim 1 is characterized in that described signal conversion unit comprises a transistor.
3, a kind of audio frequency phone boxcar according to claim 1, it is characterized in that, described signal gain adjustment unit comprises an operational amplifier and a differential operational amplifier, described operational amplifier is input to described signal conversion unit after the analog signal of described speech interface unit output is amplified, and described differential operational amplifier is input to described speech interface unit after the analog signal of described signal conversion unit output is amplified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096227 CN2737090Y (en) | 2004-09-30 | 2004-09-30 | Audio telephone set conversion box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420096227 CN2737090Y (en) | 2004-09-30 | 2004-09-30 | Audio telephone set conversion box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2737090Y true CN2737090Y (en) | 2005-10-26 |
Family
ID=35307816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420096227 Expired - Fee Related CN2737090Y (en) | 2004-09-30 | 2004-09-30 | Audio telephone set conversion box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2737090Y (en) |
-
2004
- 2004-09-30 CN CN 200420096227 patent/CN2737090Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1725767A (en) | Volum regulating method for mobile communication terminal with infrared sensor | |
| CN2691200Y (en) | Digital speaker | |
| EP1931171A3 (en) | Active audio compressing in telecommunication | |
| CN202818556U (en) | Noise reduction earphone | |
| CN2737090Y (en) | Audio telephone set conversion box | |
| CN2817244Y (en) | Mobile phone sharing sigle circuit for talking and ringing | |
| CN2857388Y (en) | Blueteeth earphone with calling speech indication | |
| CN201167379Y (en) | Videoconference system and echo eliminating apparatus for the same | |
| CN2768323Y (en) | Communication system for multi-person simultaneous call | |
| CN1929511A (en) | Mobile phone baseband chip audio frequency switching device | |
| CN1630210A (en) | A mobile telephone having intercommunication function | |
| CN2772163Y (en) | Ear microphone | |
| CN219919144U (en) | rJ interface equipment supporting ENC noise reducing function and system thereof | |
| CN2681229Y (en) | Voice input-output device | |
| CN1694471A (en) | Income prompting method of mobile communication terminal | |
| CN1233196C (en) | Hand-free earphone for mobile phone and external blue-tooth module | |
| CN1728740B (en) | Blue teeth automative picking up free device combined with automotive video/audio system | |
| CN2624569Y (en) | Telephone wow converter | |
| CN221283222U (en) | Volume-adjustable telephone circuit for old people | |
| CN100375487C (en) | Double-loudspeaker sounding system of mobile telephone set and control method thereof | |
| CN2543291Y (en) | Handset capable of interpretting | |
| CN2368228Y (en) | Apparatus for inhibiting back ground noise of telephone set | |
| CN1941653A (en) | Blue-tooth earphone with message speech indication | |
| KR200217301Y1 (en) | Repeater for internet phone | |
| CN2296098Y (en) | Automatic non-lift answerer for switchboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051026 Termination date: 20110930 |