CN1274232A - Colour TV set with FM radio function - Google Patents
Colour TV set with FM radio function Download PDFInfo
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- CN1274232A CN1274232A CN00110903A CN00110903A CN1274232A CN 1274232 A CN1274232 A CN 1274232A CN 00110903 A CN00110903 A CN 00110903A CN 00110903 A CN00110903 A CN 00110903A CN 1274232 A CN1274232 A CN 1274232A
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- signal
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- switch
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Abstract
A colour TV set with FM radio function features that the high-frequency tuner, MF amplifier,MF discriminator of image and microprocessor in the TV set are used for said FM radio function. It also has other functions of automatic memory of station's frequency and position, display on screen and memory of multiple stations' positions. Its advantages include high receiving effect and complete tuning function.
Description
The invention belongs to electronic technology field, the acoustic processing scheme when being specifically related on original color television set, add FM broadcasting program receiving function.
General color television set does not possess the function that receives the FM broadcasting program at present.And general FM receiver is the intermediate-freuqncy signal that the frequency-modulation broadcasting signal mixing produces 10.7MHZ, and frequency discrimination produces audio signal after what amplifies.If with this mode be grafted directly in the color television set can not with the fine fusion of the voice signal of television set, can not be implemented in increases the purpose that receives the FM broadcasting program in the color television set.
The objective of the invention is for addressing the above problem, provide a kind of can simple realization FM reception function, the color television set of the band FM radio that reception is good.
For reaching the problems referred to above, the present invention realizes like this, a kind of color television set with FM radio, the image processing section and the sound processing section that comprise color television set, wherein the acoustic processing of television set partly is by signal receiving antenna, high frequency telegon, microprocessor, intermediate frequency amplifier, frequency discriminator, audio frequency control and power amplifier and loud speaker
This color television set also has the output of a reception intermediate frequency amplifier, and the audio frequency that is used for therefrom isolating FM signal detects and the AFT control device;
With one be used to select export the television audio signals of frequency discriminator output or audio frequency detects and the FM signal and the TV signal switch of the FM signal of AFT control device output;
The switching controls end of described FM signal and TV signal switch is connected the switching signal output of television set microprocessor;
The output of described FM signal and TV signal switch is connected audio frequency control and power amplifier.
Above-mentioned audio frequency detects and the output of AFT control device connects a FM multiplex decoder that is used for FM signal is demodulated to left and right acoustic channels output;
The output of above-mentioned frequency discriminator connects a television stereo decoding circuit that is used for the sound of television signal is demodulated to left and right acoustic channels output;
Above-mentioned FM signal and TV signal switch switch described stereo output.
Above-mentioned frequency discriminator is common to frequency modulation frequency discrimination and TV frequency discrimination.
Above-mentioned FM signal and TV signal switch adopt three road alternative chips (N1), and its model is TC4053, and the Y0 of this chip, Z0 input connect the frequency modulated sound signal, and its Y1, Z1 input connect the sound of television signal; Its two-way X input connects the input of TV AFT signal jointly by triode trigger switch (V1).
Advantage of the present invention and good effect are, the FM radio of FM radio television set of the present invention is compared with general FM receiver, and its function of radio receiver is to adopt the high-frequency tuner of television set and the microprocessor of intermediate frequency amplifier and vision intermediate frequency frequency discriminator cooperation television set to finish.Its tuber function is more perfect, has not only realized electronic tuning, also has frequency and the automatic memory function of location number, tuning screen display function and many station locations memory function in FM radio station.Compare with the FM broadcast receiver of general electronic tuning, have that outage is not lost, tuning screen display can function.As only receiving the monophony program, television set need increase cost hardly.Even also only need increasing a very low stereodecoder of cost, just can realize the reception stereophonic program.Therefore has very high economic worth.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the circuit structure block diagram of the embodiment of the invention one;
Fig. 2 is the circuit structure block diagram of the embodiment of the invention two;
Fig. 3 is the FM signal of the embodiment of the invention two and the circuit diagram that TV signal is switched.
Embodiment one:
As shown in Figure 1, a kind of color television set with FM radio, the image processing section and the sound processing section that comprise color television set, wherein the acoustic processing of television set partly is the microprocessor by signal receiving antenna, high frequency telegon, intermediate frequency amplifier, frequency discriminator, audio frequency control and power amplifier, loud speaker and television set.
When receiving only monaural FM broadcasting program, this color television set also has the output of a reception intermediate frequency amplifier, and the audio frequency that is used for therefrom isolating FM signal detects and the AFT control device;
With one be used to select export the television audio signals of frequency discriminator output or audio frequency detects and the FM signal and the TV signal switch of the FM signal of AFT control device output;
The switching controls end of described FM signal and TV signal switch is connected the switching signal output of television set microprocessor;
The output of described FM signal and TV signal switch is connected audio frequency control and power amplifier.
Embodiment two:
As shown in Figure 2, if will receive stereosonic program, then its audio frequency detects and the output of AFT control device connects a FM multiplex decoder that is used for FM signal is demodulated to left and right acoustic channels output on the basis of embodiment one;
The output of its frequency discriminator connects a television stereo decoding circuit that is used for the sound of television signal is demodulated to left and right acoustic channels output;
Above-mentioned FM signal and TV signal switch switch described stereo output.
As shown in Figure 3, it is TA7343AP and peripheral circuit thereof that frequency discriminator adopts the frequency discriminator model of original television set, and FM signal and TV signal switch adopt three road alternative chip N1, and its model is TC4053.The left and right sound track signals of frequency discriminator TA7343AP 8 pin and the isolated frequency modulated sound signal of 9 pin connects Y0, the Z0 of three road alternative chip N1, and the left and right sound track signals of TV connects Y1, the Z1 of three road alternative chip N1; Its two-way X input connects the input of TV AFT signal jointly by triode trigger switch V1, and the trigger end of this triode connects TV AFT signal, the common AFT SW signal that connects of A, the B of three road alternative chip N1, C end.The X output output AFT signal of this three road alternatives chip N1, Y, Z output output left and right sides voice signal.
Claims (4)
1. color television set with FM radio, the image processing section and the sound processing section that comprise color television set, wherein the acoustic processing of television set partly is by the microprocessor of signal receiving antenna, high frequency telegon, intermediate frequency amplifier, frequency discriminator, audio frequency control and power amplifier, loud speaker and television set, it is characterized in that:
The audio frequency that the output that this color television set also has a reception intermediate frequency amplifier is used for therefrom isolating FM signal detects and the AFT control device;
With one be used to select export the television audio signals of frequency discriminator output or audio frequency detects and the FM signal and the TV signal switch of the FM signal of AFT control device output;
The switching controls end of described FM signal and TV signal switch is connected the switching signal output of television set microprocessor;
The output of described FM signal and TV signal switch is connected audio frequency control and power amplifier.
2. the color television set of band FM radio according to claim 1 is characterized in that:
Above-mentioned audio frequency detects and the output of AFT control device connects a FM multiplex decoder that is used for FM signal is demodulated to left and right acoustic channels output;
The output of above-mentioned frequency discriminator connects a television stereo decoding circuit that is used for the sound of television signal is demodulated to left and right acoustic channels output;
Above-mentioned FM signal and TV signal switch switch described stereo output.
3. the color television set of band FM radio according to claim 2 is characterized in that:
Above-mentioned frequency discriminator is common to frequency modulation frequency discrimination and TV frequency discrimination.
4. the color television set of band FM radio according to claim 3 is characterized in that:
Above-mentioned FM signal and TV signal switch adopt three road alternative chips (N1), and its model is TC4053, and the Y0 of this chip, Z0 input connect the frequency modulated sound signal, and its Y1, Z1 input connect the sound of television signal; Its two-way X input connects the input of TV AFT signal jointly by triode trigger switch (V1), and the trigger end of this triode connects TV AFT signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00110903A CN1121782C (en) | 2000-02-23 | 2000-02-23 | Colour TV set with FM radio function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00110903A CN1121782C (en) | 2000-02-23 | 2000-02-23 | Colour TV set with FM radio function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1274232A true CN1274232A (en) | 2000-11-22 |
| CN1121782C CN1121782C (en) | 2003-09-17 |
Family
ID=4580859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00110903A Expired - Fee Related CN1121782C (en) | 2000-02-23 | 2000-02-23 | Colour TV set with FM radio function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1121782C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100525407C (en) * | 2005-05-26 | 2009-08-05 | 海尔集团公司 | TV set with FM receiver function |
| CN101990074A (en) * | 2009-08-03 | 2011-03-23 | 康佳集团股份有限公司 | Television with audio playing function |
| CN101674396B (en) * | 2009-10-28 | 2012-04-18 | 四川长虹电器股份有限公司 | Set top box with function of frequency modulation (FM) radio and operating method thereof |
| CN102118586B (en) * | 2009-12-31 | 2013-08-14 | 深圳Tcl新技术有限公司 | Television with custom broadcasting function display mode |
-
2000
- 2000-02-23 CN CN00110903A patent/CN1121782C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100525407C (en) * | 2005-05-26 | 2009-08-05 | 海尔集团公司 | TV set with FM receiver function |
| CN101990074A (en) * | 2009-08-03 | 2011-03-23 | 康佳集团股份有限公司 | Television with audio playing function |
| CN101674396B (en) * | 2009-10-28 | 2012-04-18 | 四川长虹电器股份有限公司 | Set top box with function of frequency modulation (FM) radio and operating method thereof |
| CN102118586B (en) * | 2009-12-31 | 2013-08-14 | 深圳Tcl新技术有限公司 | Television with custom broadcasting function display mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1121782C (en) | 2003-09-17 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| 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: 20030917 Termination date: 20120223 |