CN102256082A - Television capable of supporting multiple digital television standards - Google Patents
Television capable of supporting multiple digital television standards Download PDFInfo
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- CN102256082A CN102256082A CN2011102092004A CN201110209200A CN102256082A CN 102256082 A CN102256082 A CN 102256082A CN 2011102092004 A CN2011102092004 A CN 2011102092004A CN 201110209200 A CN201110209200 A CN 201110209200A CN 102256082 A CN102256082 A CN 102256082A
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Abstract
The invention provides a television capable of supporting multiple digital television standards, wherein a central processing device transmits a passage selection signal and channel selection signals according to a current working state of the television; a first receiving device receives RF (Radio Frequency) signals of a first standard, and obtains an RF signal of a corresponding channel in the RF signals of the first standard according to a first channel selection signal and converts the RF signal into a first intermediate frequency signal; a first demodulation device demodulates the first intermediate frequency signal into a first transport stream signal; a second receiving device receives RF signals of a second standard, and obtains an RF signal of a corresponding channel in the RF signals of the second standard according to a second channel selection signal and converts the RF signal into a second intermediate frequency signal; a second demodulation device demodulates the second intermediate frequency signal into a second transport stream signal; a first switching device receives the transport stream signals according to the passage selection signal; a decoding device receives and decodes the transport stream signals and then outputs the decoded signals; and a display device receives and displays the decoded signals.
Description
Technical field
The present invention relates to the reception technique of Digital Television, relate in particular to the television set of supporting multiple Digital Television standard.
Background technology
Can support to receive DVB-T at present, it is ripe that the technology of the TV of a certain standard among DVB-C or the DVB-S has become, and the receiver that receives the DVB-S2 standard is also in development is improved.
In order to receive the TV signal of multiple standard, there is following scheme in the prior art:
1. utilize a simulated television to add corresponding D VB-T, the set-top box of DVB-C and DVB-S/S2 realizes.
2. by the built-in iDTV television receiver of DVB-T, add DVB-C and the DVB-S/S2 set-top box realizes.
3. original built-in on the iDTV basis of DVB-T, add the corresponding receiver module of being done with DVB-C and DVB-S/S2 set-top-box chip, the multisystem digital television receiver of composition Combo.
But there is following problem in above several scheme:
At first, the user is in use to some TV performance parameters, adjustment such as brightness, contrast, volume etc. will be used TV remote controller, and change platform for some, the operation of program navigating etc. will be used set-top box remote controller, the user-interface styles of television set is often different with set-top box, and user experience is relatively poor.In addition, because need two equipment of television set and set-top box simultaneously, two equipment respectively have its soft, hardware system on cost, and cost is higher.
In addition, aspect picture display effect, there is following defective:
Set-top box (or the combo module in the such scheme 3) will be processed into the digital TV image in the radiofrequency signal composite video signal (Composite Video Broadcast Signal, be abbreviated as CVBS), two component video signals (Separate Video, be abbreviated as S-Video), by television set these analog video signals are converted to the digital signal that is fit to screen display then and show.These two kinds of signals all can have a different color signal in processing procedure mixing with separate, this processing must cause the loss of each chrominance signal and mutual interference; If source signal is the vision signal of high-definition format, then after the set-top box end is reduced into signal SD signal (video format of CVBS and S-Video can not be supported high-definition signal), the SD signal can't be reduced to high-definition content in TV set terminal.
The video of set-top box also can be exported with video color difference signal (YPbPr/YCbCr) form, it is that though this can be avoided above-mentioned two kinds of signal formats because the inevitable loss of signal that its operation principle is brought, but export the color difference signal of high-definition format, can improve the cost of set-top box largely, and YPbPr signal also still a kind of analog signal from essence, in transmission course, inevitably can introduce noise and reduce image quality.
Some high-end set-top box can provide high-definition signal (the High Definition Multimedia Interface of number format, be called for short HDMI), though this can be avoided introducing in the transmission course noise, but because the set-top box of front end is wanted earlier the sheet source signal to be zoomed to the signal that HDMI sets resolution, and then the signal of the resolution that HDMI is set by television set zooms to the signal of the resolution of display screen, twice convergent-divergent process like this can be introduced the geometric distortion of image to a certain degree.
Summary of the invention
The invention provides a kind of television set of supporting multiple Digital Television standard, can simplify user's operation, reduce equipment cost, eliminate transmission loss, strengthen picture display effect.
The invention provides a kind of television set of supporting multiple Digital Television standard, comprising:
Central processing unit is used for selecting signal and channel selecting signal according to described television set current working state sendaisle, and described channel selecting signal comprises first channel selecting signal and second channel selecting signal;
First receiving device is used to receive the radiofrequency signal of first standard, and according to described first channel selecting signal, obtains the radiofrequency signal of corresponding channel in the radiofrequency signal of described first standard, and is converted to first intermediate-freuqncy signal;
First demodulating equipment is used for described first intermediate-freuqncy signal is demodulated into first transmission stream signal;
Second receiving system is used to receive the radiofrequency signal of second standard, and according to described second channel selecting signal, obtains the radiofrequency signal of corresponding channel in the radiofrequency signal of described second standard, and is converted to second intermediate-freuqncy signal;
Second demodulating equipment is used for described second intermediate-freuqncy signal is demodulated into second transmission stream signal;
First switching device shifter is used for receiving described first transmission stream signal or described second transmission stream signal according to described channel selecting signal;
Decoding device is used to receive described first transmission stream signal or described second transmission stream signal, and decoding back output decoder signal;
Display unit is used to receive decoded described decoded signal of described decoding device and demonstration.
Owing to being unified in the television set, the radiofrequency signal to multiple Digital Television standard handles, therefore the user only need be with a remote controller, have only a cover user interface, the user is simple to operation, and the TV of different systems is handled in common processor with the operation interface of same style.In addition, the present invention has saved original set-top box under television cost increase situation seldom, so cost reduces greatly.Because the present invention has removed the transmission link of vision signal between distinct device when handling the digital television signal of multi-modulation scheme, show processing with common decoder, therefore there is not transmission loss, image quality is better.
Description of drawings
Fig. 1 is the theory diagram of the television set of the multiple Digital Television standard of the support of embodiment 1;
Fig. 2 is the theory diagram of the television set of the multiple Digital Television standard of the support of embodiment 2;
Fig. 3 is the theory diagram of the television set of the multiple Digital Television standard of the support of embodiment 4;
Fig. 4 is the workflow diagram of central processing unit among the embodiment 4.
Embodiment
Embodiment 1: the theory diagram of the television set of the multiple Digital Television standard of support provided by the invention as shown in Figure 1, the present invention receives multiple standard (for example DVB-T, DVB-T2 by different receiving systems; DVB-C; Standard such as DVB-S, DVB-S2) radiofrequency signal also down-converts to intermediate-freuqncy signal, by demodulating equipment intermediate-freuqncy signal is converted to the transport stream TS signal.Comprise at least two receiving systems in the present embodiment, i.e. the first receiving device and second receiving system, corresponding, demodulating equipment comprises first demodulating equipment and second demodulating equipment at least.In addition, as shown in the figure, the present invention also comprises central processing unit, first switching device shifter, decoding device and display unit.
Operation principle is as described below:
After the user selects current program category, central processing unit judges that according to the television set current working state current program category belongs to the radiofrequency signal of any standard and how many frequency informations of this program is, sendaisle is selected signal and channel selecting signal, carry out frequency-selecting by channel selecting signal notice corresponding receiver devices and (for example carry out frequency-selecting by first channel selecting signal notice first receiving device, notify second receiving system to carry out frequency-selecting by second channel selecting signal), the transmission stream signal of notifying first switching device shifter to select certain receiving system to export by channel selecting signal.
First receiving device receives the radiofrequency signal of first standard, when receiving first channel selecting signal that central processing unit sends, obtains the radiofrequency signal of corresponding channel in the radiofrequency signal of described first standard, and is converted to first intermediate-freuqncy signal; First demodulating equipment is demodulated into first transmission stream signal with first intermediate-freuqncy signal;
Second receiving system receives the radiofrequency signal of second standard, when receiving second channel selecting signal that central processing unit sends, obtains the radiofrequency signal of corresponding channel in the radiofrequency signal of second standard, and is converted to second intermediate-freuqncy signal; Second demodulating equipment is demodulated into second transmission stream signal with described second intermediate-freuqncy signal;
First switching device shifter is according to the transmission stream signal of channel selecting signal selective reception from which receiving system, and the transmission stream signal that is received is sent to decoding device, and decoding device is the output decoder signal after decoding; Display unit is to decoded decoded signal and demonstration.
Embodiment 2: because in the present broadcast system, except that the free program of some, also have a lot of programs with the TV programme of encrypted form in broadcasting, receive these ciphered programs by receiver in the prior art, needing the relevant hardware interface is CI (Common Interface, general-purpose interface) or CA (Conditional Access, general-purpose interface) and corresponding software realize, DVB-T in the prior art, DVB-C and DVB-S/S2 system need CI or CA separately, though the function that they realize is similar, because be to realize in different chips, so need the soft of repetition, hardware configuration has increased cost.Further improvement as to embodiment 1 also comprises in the present embodiment: be connected in the decryption device and second switching device shifter between first switching device shifter and the decoding device, as shown in Figure 2.
As an embodiment, decryption device can be the CI card, and when the user inserted the CI card, decryption device was to central processing unit transmitting apparatus status signal, and notice central processing unit CI card inserts.Central processing unit detects in the television set whether have effective decryption device, when having effective decryption device, sends deciphering to second switching device shifter and selects signal.
If there is no effective decryption device, then second switching device shifter receives transmission stream signal from first switching device shifter all the time; After inserting the CI card, the transmission stream signal that second switching device shifter is exported from decryption device receiving and deciphering device all the time, the CI card receives transmission stream signal from first switching device shifter, central processing unit judges whether the transmission stream signal that is received is ciphered program, and notice CI card, CI sticks into capable decryption processing when this transmission stream signal is ciphered program, otherwise directly transmission stream signal is sent to second switching device shifter.
Present embodiment all carries out in same decryption device this deciphering from the transport stream of the broadcast encryption of different systems, so only need soft, the hardware of a cover CI/CA to get final product, has avoided repeated configuration.
Embodiment 3: as the further improvement to the foregoing description 1 and embodiment 2, also comprise the image processing apparatus that is connected between decoding device and the display unit in the present embodiment, behind decoding device output decoder signal, decoded signal is carried out image enhancement processing or convergent-divergent processing.By image processing apparatus the form that decoded decoded signal directly zooms to the resolution that is fit to display screen is shown, not only can avoid the geometric distortion that needed twice convergent-divergent of transmission introduced between different system, and can carry out image enhancement processing, thereby present to the more beautiful more smooth picture of user to primary signal.If broadcasting is the 3D film source, also can output to the 3D display screen with the 3D form.
It is worthy of note, in each above embodiment, the radiofrequency signal of various Digital Television standard can be respectively by an independently receiving system reception, in addition, if the signal that demodulating equipment can compatible multiple Digital Television standard can receive the radiofrequency signal of multiple Digital Television standard by same receiving system.
Embodiment 4, and Fig. 3 is a preferred embodiment of the present invention, and as shown in the figure, the receiving system in the present embodiment is a tuner, and demodulating equipment is a demodulator, and decoding device is a decoder.Adopt in the present embodiment to have the H.264 Digital Television SoC chip of decoding (backward compatible MPEG2) ability, be equipped with DVB-T/T2, DVB-C and DVB-S/S2 front end.Present embodiment can receive the digital television signal of DVB-T/T2 and DVB-C and many kinds of standards of DVB-S/S2.Wherein DVB-T/T2 and DVB-C use the compatible with DVB-T/T2 simultaneously of same tuner and decoding built-in chip type and the demodulator of DVB-C.DVB-S/S2 uses an external satellite to receive tuner and demodulator, and the satellite broadcast signal of process frequency reducing and demodulation is transferred to decoder with the form of original digital transport stream.
" ground/cable broadcasting signal " is the radiofrequency signal from the antenna of receiving digital television terrestrial broadcasting (DVB-T/T2) among the figure, or from the radiofrequency signal of Digital Television wired broadcasting (DVB-C).This radiofrequency signal is presented to tuner 1, tuner 1 according to first channel selecting signal of central processing unit control select the DVB-T/T2, DVB-C radiofrequency signal of a certain channel and it down-converted to intermediate-freuqncy signal, present to the built-in demodulator 1 of TV decoding master chip of compatible with DVB-T/T2 and DVB-C simultaneously, demodulator 1 is demodulated into transmission stream signal with DVB-T/T2, the DVB-C intermediate-freuqncy signal of importing and presents to the built-in TS stream switching device shifter of master chip, and promptly switch 1.
" satellite-signal " is from satellite earth antenna and through LNB (Low Noise Block down converter among the figure, lnb) radio-frequency (RF) digital satellite broadcasting (DVB-S) signal after the down-conversion, this radiofrequency signal is presented to the tuner 2 that receives the DVB-S/S2 signal, tuner 2 is selected the DVB-S/S2 radiofrequency signal of a certain specific channel and it is down-converted to intermediate-freuqncy signal to present to demodulator 2 according to second channel selecting signal control of central processing unit, and demodulator 2 is demodulated into transport stream (TS) signal with the DVB-S/S2 intermediate-freuqncy signal of importing and also presents to the built-in switch 1 of master chip.
The TS stream that the channel selecting signal that TS stream diverter switch central processing unit sends decides the TS stream of selecting DVB-T/T2, DVB-C or selects DVB-S/S2.Presenting to decryption device and second TS stream selector switch simultaneously through the TS stream signal after selecting is switch 2.Decryption device is not necessary equipment in the television operations process, but optionally.
Decryption device is the CI card in the present embodiment.When the user had inserted the CI card on television set, central processing unit detected the CI card, sent deciphering to switch 2 and selected signal, and switch 2 always can be selected the code stream from the CI card.If current what watch is ciphered program, be input to the CI card from the encryption TS stream of switch 1, the CI card is to encrypting the deciphering of TS stream, and the TS stream after will deciphering is then exported to switch 2.If current what watch is free program, then the CI card is left intact to TS stream, and directly exports to switch 2.
If the user does not in use insert the CI card, then can only watch free program.In this case, switch 2 can be selected the TS stream from switch 1, if current program is free program, then can decodes and watch; And if current program is an encrypting and decrypting, can only remind then that the user is current can not to watch for ciphered program.
TS stream signal after selecting through switch 2 is presented to decoder, earlier TS stream is separated multiplexedly in the decoder, according to the sign of packet in the TS stream with vision signal, audio signal and other data, services separately, delivers to then in the decoder separately and decodes.Decoded data image signal is fed to image processor and picture is zoomed to the resolution that is fit to the display unit demonstration, image processor can carry out various enhancement process to image simultaneously as required, be presented at display unit so that can provide picture bright in luster, that details is clear, motion is smooth, present to the user.
Central processing unit sends various control signals according to the operation of user on user interface.User interface for example comprises remote controller, television set keypad, OSD (On Screen Display, screen display) menu etc.The workflow of central processing unit is as shown in Figure 4:
Central processing unit is at first judged user-selected current program category (step 1), if current is the program of DVB-S/S2, then need to send second channel selecting signal to tuner 2, the frequency information of this program is set in the tuner 2 (step 2), tuner 2 by this DVB-S carries out frequency-selecting, the demodulator 2 that DVB-S/S2 is set then is the mode of operation that is fit to current program (step 3), and send channel selecting signal control switch 1 to switch 1 and select this road TS stream (step 4) from DVB-S/S2; And if user-selected current program is the program of DVB-T/T2 or DVB-C, then need to send first channel selecting signal to tuner 1, the frequency information of this program is set to DVB-T/T2, DVB-C (step 5) in the tuner 1, and then judge that further current program is DVB-T/T2 or DVB-C program (step 6) on earth, the modulation intelligence of correspondence is set in the demodulator 1 of DVB-T/T2, DVB-C (step 7), and send this road code stream (step 8) that channel selecting signal control switch 1 is selected from DVB-T/T2, DVB-C.
And then by testing circuit judge whether have on the current television set CI card insert television set (step 9), if do not have, then control switch 2 is selected the TS stream signal (step 10) from switch 1; If insert television set and detect the current CI of having card, then control switch 2 is selected the TS stream signal (step 11) from decoding device, ciphered program still is free program (step 12) when further judging user-selected current program then, send to the CI card and decipher (step 13) if ciphered program also can be further deciphered the more needed control informations of current program to the CI card by the CI card, if non-encrypted program then is provided with the directly current program (step 14) of output of decoding device.
Control decoder at last to the TS stream of the switch 2 output (step 15), and image processor is handled the back and shown (step 16) of decoding.
In the present embodiment, demodulator 1, switch 1, decoder, switch 2, image processor, central processing unit all are that the TV decoding chip of SoC is built-in, though the demodulator 2 of DVB-S/S2 is beyond the master chip, but demodulator 2 output is the TS stream signal of original number format, can not produce degradation impacts to signal under radio-frequency (RF) signal strength and the normal situation of quality.
If the built-in demodulator 1 of the TV process chip that is adopted is compatible with DVB-T, DVB-T2 and DVB-C simultaneously, even there is not a built-in demodulator 1, then can with the demodulator 2 similar employing external demodulator of DVB-S/S2 path, and externally increase extra TS stream diverter switch and correspondent control circuits as required.But basic principle is identical, adopts same decoder to decode to the Digital Television of three kinds of different systems, and controls with common central processing unit.
Because to DVB-T/T2, the reception of DVB-C and DVB-S/S2 signal is all done in same chip, therefore only needs a remote controller, has only a cover user interface, and is user-friendly, promotes user experience.Further, we also can mix these three kinds of broadcast programs from different systems, and the user only need change platform or select different programs to realize changing platform from the rendition list (Channel List) menu by simple key-press like this.And do not need will turn on television set and corresponding set-top box respectively in the existing scheme of picture, and want earlier television set to be switched to corresponding pattern, and then switch needed program.The user also can be provided with the program that appoint reminder oneself is liked between the program of different systems, random then browsing or watching, after subscription time arrives, remind the user to have the Pgmtime of reservation to arrive, allow the user select to forward to the program of being preengage and still rest on the current program of watching.And under the prior art scheme, often can only in same standard, preengage, and can not between different systems, preengage, because the processing of reservation is difficult to carry out between different chip systems.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (7)
1. a television set of supporting multiple Digital Television standard is characterized in that, comprising:
Central processing unit is used for selecting signal and channel selecting signal according to described television set current working state sendaisle, and described channel selecting signal comprises first channel selecting signal and second channel selecting signal;
First receiving device is used to receive the radiofrequency signal of first standard, and according to described first channel selecting signal, obtains the radiofrequency signal of corresponding channel in the radiofrequency signal of described first standard, and is converted to first intermediate-freuqncy signal;
First demodulating equipment is used for described first intermediate-freuqncy signal is demodulated into first transmission stream signal;
Second receiving system is used to receive the radiofrequency signal of second standard, and according to described second channel selecting signal, obtains the radiofrequency signal of corresponding channel in the radiofrequency signal of described second standard, and is converted to second intermediate-freuqncy signal;
Second demodulating equipment is used for described second intermediate-freuqncy signal is demodulated into second transmission stream signal;
First switching device shifter is used for receiving described first transmission stream signal or described second transmission stream signal according to described channel selecting signal;
Decoding device is used to receive described first transmission stream signal or described second transmission stream signal, and decoding back output decoder signal;
Display unit is used to receive decoded described decoded signal of described decoding device and demonstration.
2. the television set of the multiple Digital Television standard of support according to claim 1 is characterized in that, also comprises: be connected in the decryption device and second switching device shifter between described first switching device shifter and the described decoding device;
Described central processing unit, send deciphering to described second switching device shifter when also being used to detect decryption device and select signal, and whether detected transmission stream signal is coded signal, and notify described decryption device with judged result, described transmission stream signal is described first transmission stream signal or described second transmission stream signal;
Described decryption device is used for receiving described transmission stream signal from described first switching device shifter, and the transmission stream signal that will decipher or not decipher according to the judged result of described central processing unit sends to described second switching device shifter;
Described second switching device shifter is used for selecting signal to receive described transmission stream signal from described first switching device shifter or described decryption device according to described deciphering.
3. the television set of the multiple Digital Television standard of support according to claim 2 is characterized in that, also comprises:
Be connected in the image processing apparatus between described decoding device and the described display unit, be used for described decoded signal is carried out image enhancement processing or convergent-divergent processing.
4. the television set of the multiple Digital Television standard of support according to claim 1 is characterized in that,
The radiofrequency signal of the radiofrequency signal of described first standard or second standard is DVB-T, DVB-T2; DVB-C; A kind of among DVB-S, the DVB-S2.
5. the television set of the multiple Digital Television standard of support according to claim 1 is characterized in that,
The radiofrequency signal of described first standard comprises DVB-T/T2 and DVB-C signal; The radiofrequency signal of described second standard is DVB-S or DVB-S2; Described first demodulating equipment compatible with DVB-T/T2 and DVB-C signal;
Described central processing unit also is used to send the modulating mode signal;
Described first demodulating equipment also is used for according to described modulating mode signal corresponding modulating mode being set.
6. the television set of the multiple Digital Television standard of support according to claim 1 is characterized in that,
The described first receiving device or second receiving system are tuner.
7. the television set of the multiple Digital Television standard of support according to claim 3 is characterized in that,
Described first demodulating equipment, first switching device shifter, second switching device shifter, decoding device, central processing unit, image processing apparatus are positioned at same master chip.
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| CN 201110209200 CN102256082B (en) | 2011-07-25 | 2011-07-25 | Television set supporting multiple digital television systems |
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| CN 201110209200 CN102256082B (en) | 2011-07-25 | 2011-07-25 | Television set supporting multiple digital television systems |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915824A (en) * | 2015-12-13 | 2016-08-31 | 乐视致新电子科技（天津）有限公司 | Module group capable of performing signal demodulation and device thereof |
| CN106131665A (en) * | 2016-06-27 | 2016-11-16 | 深圳市九洲电器有限公司 | A kind of multichannel TS stream selects processing method and system |
| CN106657837A (en) * | 2016-12-02 | 2017-05-10 | 青岛海信电器股份有限公司 | Television system switching method and television set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158534A (en) * | 1995-11-28 | 1997-09-03 | 松下电器产业株式会社 | Frequency channel selection method and its selecting device of using the same |
| CN2879565Y (en) * | 2006-02-10 | 2007-03-14 | 海信集团有限公司 | Selection circuit for multiple types of TV signal |
| CN101706675A (en) * | 2009-11-17 | 2010-05-12 | 北京中科大洋科技发展股份有限公司 | High standard-definition video-audio IO card with internal switching function |
| CN101977289A (en) * | 2010-10-28 | 2011-02-16 | 中兴通讯股份有限公司 | Method, device, system and equipment for processing multiple-television-system signals |
-
2011
- 2011-07-25 CN CN 201110209200 patent/CN102256082B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158534A (en) * | 1995-11-28 | 1997-09-03 | 松下电器产业株式会社 | Frequency channel selection method and its selecting device of using the same |
| CN2879565Y (en) * | 2006-02-10 | 2007-03-14 | 海信集团有限公司 | Selection circuit for multiple types of TV signal |
| CN101706675A (en) * | 2009-11-17 | 2010-05-12 | 北京中科大洋科技发展股份有限公司 | High standard-definition video-audio IO card with internal switching function |
| CN101977289A (en) * | 2010-10-28 | 2011-02-16 | 中兴通讯股份有限公司 | Method, device, system and equipment for processing multiple-television-system signals |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915824A (en) * | 2015-12-13 | 2016-08-31 | 乐视致新电子科技（天津）有限公司 | Module group capable of performing signal demodulation and device thereof |
| WO2017101358A1 (en) * | 2015-12-13 | 2017-06-22 | 乐视控股（北京）有限公司 | Signal demodulation capable module and device |
| CN106131665A (en) * | 2016-06-27 | 2016-11-16 | 深圳市九洲电器有限公司 | A kind of multichannel TS stream selects processing method and system |
| CN106657837A (en) * | 2016-12-02 | 2017-05-10 | 青岛海信电器股份有限公司 | Television system switching method and television set |
| CN106657837B (en) * | 2016-12-02 | 2021-12-14 | 海信视像科技股份有限公司 | Television system switching method and television |
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| CN102256082B (en) | 2013-09-18 |
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