CN201188660Y - Television embedded with wireless sound transmitting device - Google Patents
Television embedded with wireless sound transmitting device Download PDFInfo
- Publication number
- CN201188660Y CN201188660Y CNU2008200051060U CN200820005106U CN201188660Y CN 201188660 Y CN201188660 Y CN 201188660Y CN U2008200051060 U CNU2008200051060 U CN U2008200051060U CN 200820005106 U CN200820005106 U CN 200820005106U CN 201188660 Y CN201188660 Y CN 201188660Y
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- frequency modulation
- wireless
- circuit
- wireless frequency
- television
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Abstract
The utility model discloses a television with a built-in wireless sound transmitting apparatus, which comprises a television, a wireless frequency modulation transmitting circuit and a wireless frequency modulation receiver. A television central processing unit demodulates and outputs one audio signal to a loudspeaker, and the other audio signal to a headset jack; the input end of the wireless frequency modulation transmitting circuit is connected in parallel to a circuit through which the audio frequency of the television is output to the headset jack; the power supply of the wireless frequency modulation transmitting circuit is 3.3 V and is connected with a 3.3 V power supply on a television mainboard; the wireless frequency modulation transmitting circuit and the wireless frequency modulation receiver work in the same frequency channel and are matched with each other for use. For the television with a built-in wireless sound transmitting apparatus of the utility model, when the television is set to be a headset mode, the audio signal is only transmitted through the frequency modulation transmitting circuit, thus not only the mute is realized, but also the wireless transmitting is realized; the circuit has simple design, convenient realization and very low cost.
Description
Technical field
The utility model relates to TV set circuit, specifically, relates to a kind of TV set circuit of built-in wireless voice emitter.
Background technology
Work as the dead of night, have a rest, have to when we see TV sound is turned down as far as possible, influenced auditory effect in order not influence others.When external noise is very big, even open television sound to such an extent that greatly also can't not hear again.If use this moment earphone to listen to then effect just has change greatly, but present television set only provides the earphone jack of audio frequency output mostly, we can only use wired earphone, perhaps use after the forwarding of external radio device, re-use wired earphone, so promptly increased user's cost, returned the user and brought inconvenience.
The utility model content
The television set of a kind of built-in wireless voice emitter that the utility model designs in order to solve the problems of the technologies described above just.Can go out sound by wireless signal transmission in the time of can shaking control for headset mode to television set, the user only need put on wireless headset and just can listen to.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of television set of built-in wireless voice emitter comprises television set, wireless frequency modulation radiating circuit and wireless frequency modulation receiver.The television set central processing unit is exported the audio signal demodulation, one the tunnel exports to loud speaker, earphone jack is exported on another road, the input of wireless frequency modulation radiating circuit is connected in parallel on tv audio and outputs on the circuit of earpiece holes, the power supply of wireless frequency modulation radiating circuit is 3.3V, links to each other with 3.3V power supply on the TV SKD; Wireless frequency modulation radiating circuit and wireless frequency modulation receiver operation be in same frequency range, supporting use.
The wireless frequency modulation radiating circuit of the television set of described built-in wireless voice emitter uses the TA7335P integrated circuit, audio signal is input to 1 pin of TA7335P by capacitor C 1 coupling, after amplification, mixing and frequency conversion, become the 107.6MHz high-frequency signal, 6 pins by TA7335P are exported to tuning circuit C3 and L1, launch to antenna at last.
The wireless frequency modulation receiver of the television set of described built-in wireless voice emitter is common FM reception earphone, and its receive frequency covers 107.6MHz.
The beneficial effects of the utility model are television internal wireless frequency modulation radiating circuits, and when television set was set to headset mode, audio signal was only by the modulating emission circuit emission, have both realized quietly, have realized wireless transmission again; This circuit design is simple, and it is convenient to realize, and cost is very low.
Description of drawings
Fig. 1 is the utility model functional block diagram.
Fig. 2 is the utility model wireless frequency modulation radiating circuit figure.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the television set of a kind of built-in wireless voice emitter of the utility model comprises television set, wireless frequency modulation radiating circuit and wireless frequency modulation receiver.The television set central processing unit is exported the audio signal demodulation, one the tunnel exports to loud speaker, earphone jack is exported on another road, the input of wireless frequency modulation radiating circuit is connected in parallel on tv audio and outputs on the circuit of earpiece holes, the power supply of wireless frequency modulation radiating circuit is 3.3V, links to each other with 3.3V power supply on the TV SKD; Wireless frequency modulation radiating circuit and wireless frequency modulation receiver operation be in same frequency range, supporting use.
As shown in Figure 2, the wireless frequency modulation radiating circuit of the television set of described built-in wireless voice emitter uses the TA7335P integrated circuit, audio signal is input to 1 pin of TA7335P by capacitor C 1 coupling, after amplification, mixing and frequency conversion, become the 107.6MHz high-frequency signal, 6 pins by TA7335P are exported to tuning circuit C3 and L1, export to the antenna emission at last.
The utility model is not limited to above-mentioned preferred forms, and other any identical with the utility model or akin products that anyone draws under enlightenment of the present utility model all drop within the protection range of the present utility model.
Claims (3)
1, a kind of television set of built-in wireless voice emitter comprises television set, wireless frequency modulation radiating circuit and wireless frequency modulation receiver; It is characterized in that: the television set central processing unit is exported the audio signal demodulation, one the tunnel exports to loud speaker, earphone jack is exported on another road, the input of wireless frequency modulation radiating circuit is connected in parallel on tv audio and outputs on the circuit of earpiece holes, the power supply of wireless frequency modulation radiating circuit is 3.3V, links to each other with 3.3V power supply on the TV SKD; Wireless frequency modulation radiating circuit and wireless frequency modulation receiver operation be in same frequency range, supporting use.
2, the television set of built-in wireless voice emitter according to claim 1, it is characterized in that: the wireless frequency modulation radiating circuit uses the TA7335P integrated circuit, audio signal is input to 1 pin of TA7335P by capacitor C 1 coupling, after amplification, mixing and frequency conversion, become the 107.6MHz high-frequency signal, 6 pins by TA7335P are exported to tuning circuit C3 and L1, launch to antenna at last.
3, the television set of built-in wireless voice emitter according to claim 1 is characterized in that: the wireless frequency modulation receiver is common FM reception earphone, and its receive frequency covers 107.6MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200051060U CN201188660Y (en) | 2008-03-07 | 2008-03-07 | Television embedded with wireless sound transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200051060U CN201188660Y (en) | 2008-03-07 | 2008-03-07 | Television embedded with wireless sound transmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201188660Y true CN201188660Y (en) | 2009-01-28 |
Family
ID=40311681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200051060U Expired - Fee Related CN201188660Y (en) | 2008-03-07 | 2008-03-07 | Television embedded with wireless sound transmitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201188660Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185508A1 (en) * | 2012-06-15 | 2013-12-19 | 惠州Tcl移动通信有限公司 | Method and wireless communication device for implementing wireless headset feature of television |
| CN104349242A (en) * | 2013-08-08 | 2015-02-11 | 键吉科技股份有限公司 | Sound system |
| CN106488281A (en) * | 2016-10-26 | 2017-03-08 | Tcl集团股份有限公司 | A kind of player method of television audio and control system, TV, communication system |
-
2008
- 2008-03-07 CN CNU2008200051060U patent/CN201188660Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185508A1 (en) * | 2012-06-15 | 2013-12-19 | 惠州Tcl移动通信有限公司 | Method and wireless communication device for implementing wireless headset feature of television |
| CN104349242A (en) * | 2013-08-08 | 2015-02-11 | 键吉科技股份有限公司 | Sound system |
| CN106488281A (en) * | 2016-10-26 | 2017-03-08 | Tcl集团股份有限公司 | A kind of player method of television audio and control system, TV, communication system |
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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: 20090128 Termination date: 20100307 |