CN2410830Y - Colour TV set with frequency modulation receiver function - Google Patents
Colour TV set with frequency modulation receiver function Download PDFInfo
- Publication number
- CN2410830Y CN2410830Y CN 00213579 CN00213579U CN2410830Y CN 2410830 Y CN2410830 Y CN 2410830Y CN 00213579 CN00213579 CN 00213579 CN 00213579 U CN00213579 U CN 00213579U CN 2410830 Y CN2410830 Y CN 2410830Y
- Authority
- CN
- China
- Prior art keywords
- signal
- frequency
- output
- television set
- switch
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a colour TV with frequency modulation reception function, which has the functions of easy frequency modulation reception and good reception effect. The function of frequency modulation reception is completed by a high-frequency tuner, an intermediate-frequency amplifier and a vision intermediate-frequency discriminator which are matched with a microprocessor of TV sets. The turning function is complete, and the utility model has the functions of automatic memory of the frequency and position number of FM station, screen display tuning and memory of multiple stations. Receiving monophonic programs, the TV sets need no additional cost. Only a stereo decoder with low cost is added to realize that even if the stereo programs are received.
Description
The utility model belongs to electronic technology field, the acoustic processing scheme when being specifically related to add FM broadcasting program receiving function on original color television set.
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 purpose of this utility model 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 utility model is to realize 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 utility model and good effect are, the FM radio of FM radio television set described in the utility model 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 utility model is described in further detail.
Fig. 1 is the circuit structure block diagram of the utility model embodiment one;
Fig. 2 is the circuit structure block diagram of the utility model embodiment two;
Fig. 3 is the FM signal of the utility model embodiment 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 TA7343AP8 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 |
|---|---|---|---|
| CN 00213579 CN2410830Y (en) | 2000-02-23 | 2000-02-23 | Colour TV set with frequency modulation receiver function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213579 CN2410830Y (en) | 2000-02-23 | 2000-02-23 | Colour TV set with frequency modulation receiver function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2410830Y true CN2410830Y (en) | 2000-12-13 |
Family
ID=33579838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00213579 Expired - Lifetime CN2410830Y (en) | 2000-02-23 | 2000-02-23 | Colour TV set with frequency modulation receiver function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2410830Y (en) |
-
2000
- 2000-02-23 CN CN 00213579 patent/CN2410830Y/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0967746A3 (en) | Diversity radio receiver system with two tuners and a Radio Data System (RDS) decoder | |
| US7493096B2 (en) | Apparatus and method for processing digital multimedia broadcast (DMB) signals | |
| CN1121782C (en) | Colour TV set with FM radio function | |
| CN1060607C (en) | Radio frequency modulating device with audio multiplex combination broadcasting function | |
| CN2410830Y (en) | Colour TV set with frequency modulation receiver function | |
| CN201282520Y (en) | Tuner for digital satellite television set-top box | |
| CN101383928B (en) | Stereo control method and television applying the method | |
| CN201315642Y (en) | High frequency heat bus switching circuit and TV set comprising same | |
| CN201039318Y (en) | TV set with wired transmission and radio transmission function | |
| CN2171956Y (en) | Integral whole colour satellite receiving TV | |
| CN2826867Y (en) | Device for realizing RF signal multipath distribution use | |
| CN202043220U (en) | Five-in-one tuner for television signals | |
| CN202565257U (en) | Multichannel intelligent radio signal receiver | |
| CN200990647Y (en) | Direct broadcasting satellite system satellite digital television receiver | |
| CN101742195A (en) | Television with PVR function and implementation method thereof | |
| JPS61184916A (en) | Receiver | |
| CN2807652Y (en) | TV set having frequency-modulation receiver function | |
| CN2762464Y (en) | DMB-T digital TV receiver based on PCI | |
| CN100525407C (en) | TV set with FM receiver function | |
| CN2710282Y (en) | TV. tuner | |
| CN2303406Y (en) | Satellite receiving device for satellite TV set | |
| CN2359844Y (en) | Universal 'Liyin' decoding device | |
| JPH0311976Y2 (en) | ||
| CN2276692Y (en) | TV. audio receiver with digital stereo/double audio | |
| JPH0413861Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |