CN201118774Y - TV signal forward device - Google Patents
TV signal forward device Download PDFInfo
- Publication number
- CN201118774Y CN201118774Y CNU2007201274409U CN200720127440U CN201118774Y CN 201118774 Y CN201118774 Y CN 201118774Y CN U2007201274409 U CNU2007201274409 U CN U2007201274409U CN 200720127440 U CN200720127440 U CN 200720127440U CN 201118774 Y CN201118774 Y CN 201118774Y
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Abstract
The utility model discloses a television signal transfer device, which relates to an apparatus transferring cable television signals into a playing device and solving the problem that the current transfer device can not receive two television signals simultaneously. The television signal transfer device comprises a high frequency tuning module which is connected with a decoding chip; and the high frequency tuning module includes at least two independent high frequency tuners. The television signal transfer device selects a plurality of television signals through the plurality of high frequency tuners, and the television signal transfer device of the utility model is mainly used for receiving television signals and can be applied to computers, set-top boxes and various multimedia players.
Description
Technical field
The utility model relates to the reception of cable TV signal, particularly cable TV signal is transferred to the device in the playback equipment (for example: set-top box, computer etc.).
Background technology
Along with the universalness of PC, and the becoming stronger day by day of computer function, a lot of people wish to finish on computers more work, find more amusement on computers, so occurred TV card and TV box on the market.TV card and TV box mainly are received television signals, convert the TV signal that receives to signal that computer can be handled, play this TV signal by computer, thereby have realized seeing on computers TV.
TV card and TV box are made up of high-frequency tuner (Tuner), decoding chip (Decoder) etc. usually.
TV signal generally transmits by high-frequency signal, comprise audio signal and vision signal in this high-frequency signal simultaneously, when high-frequency signal is sent on TV card/TV box, import through the input of high-frequency tuner earlier, from numerous high-frequency signals, choose the user by the chip of high-frequency tuner then and wish the high-frequency signal that receives, and selected high-frequency signal sent to one of high-frequency amplifier stages, shield the interference signal beyond this high-frequency signal of choosing simultaneously.One of high-frequency amplifier stages then can amplify selected high-frequency signal, and audio signal is separated with vision signal.
In TV card/TV box, vision signal is after high-frequency tuner output, usually to the vision signal of simulation be converted to the vision signal of numeral by decoding chip (Decoder), signal after the processing through PCI socket/USB interface (PCI:Peripheral Component Interconnect, peripheral parts interconnected; USB:Universal Serial Bus, USB) and system bus be sent on the video card, this moment, video card can convert thereof into the output signal that is fit to computer monitor again, and by the display broadcast video signal; In like manner, audio signal also needs to convert digital signal to be play again, but the transfer process of this audio signal can finish by the sound card of computer, also can finish by the audio decoder chip in TV card/TV box.
In order to make TV card/TV box (for example: cable TV signal receive a greater variety of TV signal by coaxial cable, broadband network signal etc.), can adopt the patent No. is disclosed technology in 200620039672.4 the Chinese patent, the signal that is about in the coaxial cable is linked in signal multiplexing/demodulation multiplexer, then by a radio frequency interface and a data interface output signal on signal multiplexing/demodulation multiplexer, radio frequency interface wherein can transmit cable TV signal, data-interface can the transmission of broadband network signal, and only needs a coaxial cable just incoming cable television signal and broadband network signal simultaneously.
The appearance of TV card and TV box makes the function of computer obtain further reinforcement.When a computer is connected with a plurality of display, may need to use simultaneously a TV card/TV box on different displays, to play different TV signal, this just needs a TV card/TV box can receive a plurality of TV signal.
But because existing TV card and TV box have only a high-frequency tuner, even having adopted the patent No. is disclosed technology in 200620038672.4 the Chinese patent, also be or the reception cable TV signal, or receive the broadband network signal, receive when can not realize two TV signal.
The utility model content
The utility model provides a kind of TV signal switching device that can receive two TV signal simultaneously.
For achieving the above object, the utility model adopts following technical scheme: this TV signal switching device comprises the high-frequency tuning module, and this high-frequency tuning module is connected with decoding chip; Described high-frequency tuning module comprises at least two high-frequency tuners that work alone.
Described high-frequency tuner is chosen a high-frequency signal from numerous high-frequency signals, and the high-frequency signal of choosing is amplified, and sends to decoding chip after isolating audio signal and vision signal; This decoding chip is decoded respectively to isolated audio signal and vision signal.
Described TV signal switching device also comprises printed circuit board, the power input of described high-frequency tuner is connected to feeder ear by the peripheral parts interconnected socket on this printed circuit board, and the data output end of described decoding chip is arranged on the peripheral parts interconnected socket on this printed circuit board.
Described TV signal switching device also comprises printed circuit board, the power input of described high-frequency tuner is connected to feeder ear by the USB (universal serial bus) on this printed circuit board, and the data output end of described decoding chip is arranged on the USB (universal serial bus) on this printed circuit board.
Described high-frequency tuner is separately positioned on the both sides of printed circuit board.
Described TV signal switching device also comprises card reader, and described card reader is connected to high-frequency tuner.
Described card reader is located on the described printed circuit board.
Described TV signal switching device is applied in the set-top box, in the computer or in the multimedia player.
Described decoding chip comprises audio decoder and Video Decoder.
Described high-frequency signal is wireless television signal, cable TV signal or broadband network signal.
At least two high-frequency tuners that work alone have been adopted by the described TV signal switching device of technique scheme, and each high-frequency tuner all can be chosen a high-frequency signal from numerous high-frequency signals, selected high-frequency signal is inequality if the user sets two high-frequency tuners, can be implemented in like this and receive two TV signal in the TV signal switching device.The TV signal number that the utility model TV signal switching device can receive simultaneously is identical with high-frequency tuner number in the high-frequency tuning module.After each high-frequency tuner is handled the high-frequency signal of choosing in the utility model, output to decoding chip, by decoding chip audio signal and vision signal are carried out decoding processing respectively, decoded audio signal and vision signal can be finished the broadcast of a plurality of TV signal by the multiwindow of a display, also can finish the broadcast of a plurality of TV signal by a plurality of displays.
Description of drawings
Schematic diagram when Fig. 1 is the utility model TV signal switching device employing PCI socket;
Schematic diagram when Fig. 2 is the utility model TV signal switching device employing USB interface.
Embodiment
A plurality of high-frequency tuners have been adopted in the high-frequency tuning module of the utility model TV signal switching device, each high-frequency tuner can be chosen a high-frequency signal from numerous high-frequency signals, if the high-frequency signal difference that high-frequency tuner is chosen is as long as there are two high-frequency tuners just can receive two high-frequency signals.
Below in conjunction with accompanying drawing the utility model TV signal switching device is described in detail.
As depicted in figs. 1 and 2, general TV signal switching device comprises high-frequency tuning module and decoding chip, the input of described high-frequency tuning module is connected to tv signal input (2 and 3), can receive a lot of TV signal by tv signal input (2 and 3), this TV signal generally transmits with high-frequency signal, comprise audio signal and vision signal in this high-frequency signal simultaneously, the high-frequency tuning module then can be chosen a high-frequency signal from these high-frequency signals, and the high-frequency signal of choosing sent to one of high-frequency amplifier stages in the high-frequency tuning module, shield the interference signal beyond this high-frequency signal of choosing simultaneously; One of high-frequency amplifier stages then can amplify selected high-frequency signal, and with the audio ﹠ video Signal Separation.The output of described high-frequency tuning module is connected to the input of decoding chip, the output of described decoding chip is connected to the data input pin of mainboard, audio signal and vision signal after making the high-frequency tuning module amplify can be input in the decoding chip, and by decoding chip to audio signal and decoding video signal, then by the broadcast of mainboard and the corresponding establishment that is connected with mainboard realization audio frequency and video.
In order to receive two TV signal simultaneously, as depicted in figs. 1 and 2, the high-frequency tuning module in the utility model TV signal switching device has adopted at least two high-frequency tuners that work alone (1 and 4).Because each high-frequency tuner all can be chosen a high-frequency signal from numerous high-frequency signals, selected high-frequency signal is inequality if the user sets two high-frequency tuners, and then two high-frequency signals will choosing are handled by the high-frequency tuner chip, produce corresponding two audio signals and two vision signals, by decoding chip to these audio signals and decoding video signal, and be transported in the corresponding playing device and play, can be implemented in like this and receive two high-frequency signals in the TV signal switching device.
The utility model need be connected in other the video player or vision processor, could use, generally to be connected on the mainboard of these machines, can adopt a variety of forms that the utility model TV signal switching device is connected on the mainboard, mainly comprise following two kinds.
First kind of connected mode is: the utility model TV signal switching device also comprises printed circuit board, as shown in Figure 1, this printed circuit board is connected with mainboard by the peripheral component interconnect (pci) socket, and the power input 8 of high-frequency tuner is connected to the feeder ear of mainboard by the peripheral parts interconnected socket on this printed circuit board, by motherboard power supply is the high-frequency tuner power supply, has guaranteed the normal power supply of high-frequency tuner.In order to make TV signal can be transferred on the mainboard, wherein, the output 9 of decoding chip is connected to the data input pin of mainboard by the peripheral parts interconnected socket on this printed circuit board, decoded like this TV signal just can be transferred on the mainboard by the PCI socket, and reaches the broadcast that the corresponding establishment that is connected with mainboard is realized audio frequency and video by mainboard at last.In order to save the typesetting space of printed circuit board, high-frequency tuner can be separately positioned on the both sides of printed circuit board, make more miniaturization of circuit board to meet the requirement of electronic equipment microminaturization.
Above-mentioned PCI socket can adopt present market golden finger commonly used to realize, and need with corresponding connector (for example screw etc.), the utility model TV signal switching device is fixed on the mainboard, to prevent loose contact between TV signal switching device and the mainboard.
Another kind of connected mode is: the utility model TV signal switching device also comprises printed circuit board, as shown in Figure 2, this printed circuit board is connected with mainboard by USB (universal serial bus) (USB interface), the main form that exactly power input and the data output end of this printed circuit board is made into USB interface, so just can realize the transfer of data between mainboard and the utility model TV signal switching device, and mainboard is powered to the utility model TV signal switching device; As follows during specific implementation: the power input 8 of high-frequency tuner is connected to the feeder ear of mainboard by the USB (universal serial bus) on this printed circuit board, the output 9 of described decoding chip is connected to the data input pin of mainboard by the USB (universal serial bus) on this printed circuit board, decoded like this TV signal just can be transferred on the mainboard by the USB socket, and at last by the broadcast of mainboard and the corresponding establishment realization audio frequency and video that are connected with mainboard, this connected mode mainly guarantees stable connection between TV signal switching device and the mainboard by USB interface.In order to save the typesetting space of printed circuit board, high-frequency tuner can be separately positioned on the both sides of printed circuit board, make more miniaturization of circuit board to meet the requirement of electronic equipment microminaturization.
In above-mentioned two kinds of connected modes, the TV signal switching device that connects by pci interface can be made into the form of integrated circuit board, and the TV signal switching device that connects by USB interface is then with box-packed form production.
In order to receive TV signal through encrypting, as depicted in figs. 1 and 2, the utility model TV signal switching device can also comprise card reader 7, described card reader 7 is connected to high-frequency tuner, in card reader 7, insert subscriber card, just can the TV signal of encrypting be decrypted, make high-frequency tuner can choose the TV signal of encryption.
In the specific implementation, high-frequency tuner can connect card reader, also can not connect card reader.As depicted in figs. 1 and 2, when this TV signal switching device has two high-frequency tuners (1 and 4), can only connect card reader on a high-frequency tuner 1 therein, and not connect card reader on the high-frequency tuner 4.This set makes the user both can choose the TV signal of encryption by being connected with the card reader high-frequency tuner, just watches pay TV; Also can directly choose the TV signal of not encrypting, just watch free TV by high-frequency tuner.
In order to save the space, above-mentioned card reader 7 also is arranged on the described printed circuit board, so just can be so that the miniaturization more of the utility model TV signal switching device.
As depicted in figs. 1 and 2, can play TV signal in order to guarantee above-mentioned mainboard and the facility that links to each other with mainboard, also be provided with display card and sound card on the described mainboard, the data input pin of described display card and the data input pin of sound card, be connected respectively to the data output end 9 of decoding chip by mainboard, to receive the TV signal (wherein, sound card received audio signal, display card receiving video signals) of decoding chip output; The data output end of described display card is connected to video player, and the data output of described sound card is connected to audio player.Wherein, video card converts decoded vision signal to signal that video player can be discerned, and is sent to video player and is play, and video player has a variety of ways of realization, for example: display, projecting apparatus etc.; Sound card is sent to audio player and is play after decoded audio signal is changed, and the audio player here can be: sound equipment, earphone, loud speaker etc.
Above-mentioned display card and sound card can be integrated on the mainboard, also can be connected with mainboard by the PCI socket.
Above-described the utility model TV signal switching device can be used on the set-top box, also can be with on computers, can also be used on other multimedia player, for example: the mobile phone of MP4 player, band audio-video playing function etc., so above-mentioned mainboard is to be TV SKD, computer main board or multimedia player mainboard.
When the utility model is used on computers, utilize the function of the Multi-User Multi-Task of existing computer operating system, be implemented in the broadcast of finishing a plurality of TV signal in the multiwindow of a display, also can utilize existing computer to connect the function of a plurality of displays simultaneously, be implemented in the broadcast of finishing a plurality of TV signal on a plurality of displays.
When the utility model is applied on the set-top box, two TV signal this set-top box can being selected are transported on two television sets, so just all dispose a set-top box, and these two television sets can be watched two different TV signal without each television set.
As depicted in figs. 1 and 2, the decoding chip in the utility model TV signal switching device comprises audio decoder 5 and Video Decoder 6, can realize audio frequency output and video output to audio signal box decoding video signal to guarantee the utility model.
The high-frequency signal that the utility model TV signal switching device can receive can be wireless television signal, cable TV signal or broadband network signal.In the specific implementation, the form of the TV signal that each high-frequency tuner inserted can be different, also can be identical.
When existing cable TV signal input, when the broadband network signal input part is arranged again, can adopt the patent No. is disclosed technology in 200620038672.4 the Chinese patent, make cable TV signal input and broadband network signal input part all be linked into the utility model TV signal switching device by coaxial cable, to simplify the mode of connection of the present utility model, convenient and practical.
The utility model TV signal switching device is mainly used in received television signal, can be connected use with the mainboard of computer, set-top box and various multimedia players, the mainboard that the TV signal that receives is transferred to computer or set-top box is handled, and reaches the broadcast that the equipment that is connected with mainboard is finished TV signal by mainboard.
The above; it only is embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claim was defined.
Claims (7)
1. a TV signal switching device comprises the high-frequency tuning module, and this high-frequency tuning module is connected with decoding chip; It is characterized in that described high-frequency tuning module comprises at least two high-frequency tuners that work alone, described each high-frequency tuner is connected respectively to decoding chip.
2. TV signal switching device according to claim 1, it is characterized in that, also comprise printed circuit board, the power input of described high-frequency tuner is connected to feeder ear by the peripheral parts interconnected socket on this printed circuit board, and the data output end of described decoding chip is arranged on the peripheral parts interconnected socket on this printed circuit board.
3. TV signal switching device according to claim 1, it is characterized in that, also comprise printed circuit board, the power input of described high-frequency tuner is connected to feeder ear by the USB (universal serial bus) on this printed circuit board, and the data output end of described decoding chip is arranged on the USB (universal serial bus) on this printed circuit board.
4. according to claim 2 or 3 described TV signal switching devices, it is characterized in that described high-frequency tuner is separately positioned on the both sides of printed circuit board.
5. according to claim 2 or 3 described TV signal switching devices, it is characterized in that also comprise card reader, described card reader is connected to high-frequency tuner.
6. TV signal switching device according to claim 5 is characterized in that described card reader is located on the described printed circuit board.
7. according to any described TV signal switching device in the claim 1 to 3, it is characterized in that described decoding chip comprises audio decoder and Video Decoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201274409U CN201118774Y (en) | 2007-08-14 | 2007-08-14 | TV signal forward device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201274409U CN201118774Y (en) | 2007-08-14 | 2007-08-14 | TV signal forward device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201118774Y true CN201118774Y (en) | 2008-09-17 |
Family
ID=39993373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201274409U Expired - Fee Related CN201118774Y (en) | 2007-08-14 | 2007-08-14 | TV signal forward device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201118774Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812862A (en) * | 2015-10-30 | 2016-07-27 | 深圳市盈创拓展科技有限公司 | Highly integrated miniaturized mobile digital television receiving module |
-
2007
- 2007-08-14 CN CNU2007201274409U patent/CN201118774Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812862A (en) * | 2015-10-30 | 2016-07-27 | 深圳市盈创拓展科技有限公司 | Highly integrated miniaturized mobile digital television receiving module |
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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: 20080917 Termination date: 20110814 |