CN102137304B - Television signal transmission method, set top box and television - Google Patents
Television signal transmission method, set top box and television Download PDFInfo
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- CN102137304B CN102137304B CN 201010538283 CN201010538283A CN102137304B CN 102137304 B CN102137304 B CN 102137304B CN 201010538283 CN201010538283 CN 201010538283 CN 201010538283 A CN201010538283 A CN 201010538283A CN 102137304 B CN102137304 B CN 102137304B
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Abstract
The embodiment of the invention discloses a television signal transmission cost, a set top box and a television, which can reduce cost for television program watching on a plurality of televisions. The method provided by the embodiment of the invention comprises the following steps of: receiving a radio frequency (RF) input signal; selecting a corresponding frequency point in the RF input signal according to program information selected by a user; demodulating the frequency point to obtain a scrambled transmission stream; descrambling the scrambled transmission stream to obtain a transmission stream; modulating the transmission stream to obtain an RF output signal; and sending the RF output signal to the plurality of televisions through a television distributor, so that the users can watch corresponding television programs on the televisions. The embodiment of the invention also provides a television signal transmission system and related equipment. The embodiment of the invention can reduce the cost for the television program watching on the plurality of televisions.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of television signal transmission method, set-top box and TV.
Background technology
For operation and the rights management that facilitates TV services, Digital Television operator need to carry out scrambling to TV programme and process, because television set does not generally possess the descrambling function, and the signal scrambling technique that each operator uses is variant, therefore need a kind of can the receiving digital television program and possess the equipment of descrambling program function, for example top box of digital machine.
Now, may have simultaneously multiple TV set in one family, to satisfy the demand of independently watching TV programme in a plurality of rooms.
But the program of the audio-video interface output that a present set-top box is all is all identical, use a set-top box can't satisfy the demand that multiple TV set in one family is independently watched TV programme, it is comparatively general solution at present that television set is equipped with a set-top box.
In the scheme of prior art, if the user wish and can independently watch TV programme on a plurality of television sets, need so to be that each television set is equipped with a set-top box, but can greatly increase the cost that user and operator pay like this.
Summary of the invention
The embodiment of the present invention provides a kind of television signal transmission method, set-top box and TV, can reduce the cost of many TV watching TV programme.
The television signal transmission method that the embodiment of the present invention provides comprises: received RF carrier wave RF input signal; Select corresponding frequency according to the programme information that the user selects in described RF input signal; Described frequency is carried out demodulation obtain the scrambling transport stream; Described scrambling transport stream is carried out descrambling obtain transport stream; Described transport stream is modulated obtain the RF output signal; Described RF output signal is sent to each TV by the TV distributor, makes TV programme corresponding to described television-viewing.
The television signal transmission method that the embodiment of the present invention provides, comprise: by the radio-frequency carrier RF output signal that TV distributor receiving set up box sends, described RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by described set-top box; Select corresponding frequency according to the programme information that the user selects in described RF output signal; The frequency of selecting in described RF output signal is carried out demodulation obtain TV signal.
The set-top box that the embodiment of the present invention provides comprises: signal input part is used for received RF carrier wave RF input signal; Demodulator of PM signal PM, the programme information that is used for selecting according to the user is selected corresponding frequency at described RF input signal, and described frequency is carried out demodulation obtains the scrambling transport stream; The signal descrambler is used for that described scrambling transport stream is carried out descrambling and obtains transport stream; Signal modulator is used for described transport stream is modulated obtaining the RF output signal; Signal output part is used for described RF output signal is sent to each TV by the TV distributor, makes TV programme corresponding to described television-viewing.
The TV that the embodiment of the present invention provides, comprise: signal receiving end, be used for the radio-frequency carrier RF output signal by the transmission of TV distributor receiving set up box, described RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by described set-top box; Signal selector, each programme information in the program scope that is used for selecting according to the user is selected corresponding frequency in described RF output signal; Signal processor is used for that the frequency of selecting in described RF output signal is carried out demodulation and obtains TV signal.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
in the embodiment of the present invention, set-top box is at received RF carrier wave (RF, Radio Frequency) after input signal, can select corresponding frequency in the RF input signal according to the programme information that the user selects, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises the programme information of user's selection in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs can both watch TV programme, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is embodiment schematic diagram of television signal transmission method of the present invention;
Fig. 2 is another embodiment schematic diagram of television signal transmission method of the present invention;
Fig. 3 is schematic diagram of television signal transmission process of the present invention;
Fig. 4 is schematic diagram of UI Preferences of the present invention;
Fig. 5 is another embodiment schematic diagram of television signal transmission method of the present invention;
Fig. 6 is another embodiment schematic diagram of television signal transmission method of the present invention;
Fig. 7 is another schematic diagram of television signal transmission process of the present invention;
Fig. 8 is another schematic diagram of UI Preferences of the present invention;
Fig. 9 is embodiment schematic diagram of set-top box of the present invention;
Figure 10 is another embodiment schematic diagram of set-top box of the present invention;
Figure 11 is embodiment schematic diagram of TV of the present invention;
Figure 12 is another embodiment schematic diagram of TV of the present invention;
Figure 13 is television signal transmission system embodiment schematic diagram of the present invention.
Embodiment
The embodiment of the present invention provides a kind of television signal transmission method, set-top box and TV, can reduce the cost of many TV watching TV programme.
Television signal transmission method in the present embodiment specifically can comprise:
(1) received RF carrier wave RF input signal;
In the present embodiment, set-top box can receive from the server of digital-TV operator the RF input signal, can comprise several frequencies in this RF input signal, can carry some railway digital programs on each frequency.
The concrete process that receives the RF input signal is those skilled in the art's common practise, specifically is not construed as limiting herein.
(2) programme information of selecting according to the user is selected corresponding frequency in the RF input signal;
In the present embodiment, set-top box can get the programme information that the user selects, and selects corresponding frequency according to the programme information that this user selects in the RF input signal.
(3) frequency is carried out demodulation and obtain the scrambling transport stream;
(4) the scrambling transport stream is carried out descrambling and obtain transport stream;
(5) transport stream is modulated obtain the RF output signal;
After set-top box obtains transport stream, can modulate this transport stream and obtain the RF output signal, include content corresponding to programme information that the user selects in this RF output signal.
(6) the RF output signal is sent to each TV by the TV distributor, makes TV programme corresponding to television-viewing.
Set-top box to transport stream modulate obtain the RF output signal after, can export this RF output signal to the TV distributor by cable television line, the TV distributor can export this RF output signal to each TV that is connected with the TV distributor, so that each TV can be watched corresponding TV programme.
in the present embodiment, set-top box is at received RF carrier wave (RF, Radio Frequency) after input signal, can select corresponding frequency in the RF input signal according to the programme information that the user selects, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises the programme information of user's selection in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs can both watch TV programme, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
The television signal transmission method of the above from the angle embodiment of the present invention of set-top box is described, to the television signal transmission method the embodiment of the present invention, the television signal transmission method in the embodiment of the present invention specifically can comprise the below from the angle of auxiliary TV:
(1) the radio-frequency carrier RF output signal that sends by TV distributor receiving set up box;
In the present embodiment, this RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by set-top box, and detailed process can be similar to the processing procedure of RF input signal with the set-top box described in previous embodiment.
(2) programme information of selecting according to the user is selected corresponding frequency in the RF output signal;
Auxiliary TV can be selected corresponding frequency according to the programme information that the user selects in the RF output signal that receives.
(3) frequency of selecting is carried out demodulation and obtain TV signal in the RF output signal.
After choosing corresponding frequency, auxiliary TV can carry out demodulation and obtain TV signal to the frequency of selecting in the RF output signal, thereby plays TV programme.
" user select programme information " in above-described embodiment can be " setting in advance each programme information in the program scope that the user on set-top box selects ", can be also " user is by the programme information of several target programs of control signal appointment; be that control signal is corresponding with the programme information of the target program of user's selection ", the below describes respectively:
One, the program scope of selecting according to the user provides TV programme in this program scope to the user:
See also Fig. 1, embodiment of television signal transmission method of the present invention comprises:
101, receive the RF input signal;
In the present embodiment, set-top box can receive from the server of digital-TV operator the RF input signal, can comprise several frequencies in this RF input signal, can carry some railway digital programs on each frequency.
The concrete process that receives the RF input signal is those skilled in the art's common practise, specifically is not construed as limiting herein.
102, each interior programme information of program scope of selecting according to the user who sets in advance is selected corresponding frequency in the RF input signal;
In the present embodiment, the user can arrange the program scope that each auxiliary TV can receive in advance in set-top box, and the size of this program scope can determine according to the disposal ability of set-top box, specifically is not construed as limiting herein.
Need to prove, in the present embodiment, the TV that directly is connected by high definition cable with set-top box is main TV, and the TV that is connected with set-top box by the TV distributor is auxiliary TV.
After set-top box receives the RF input signal, can select according to each programme information in this program scope corresponding frequency in the RF input signal, namely search the frequency at these programme informations place.
103, frequency is carried out demodulation and obtain the scrambling transport stream;
104, the scrambling transport stream is carried out descrambling and obtain transport stream;
Step 103 in the present embodiment processing procedure to signal in 104 is those skilled in the art's common practise, is not construed as limiting herein.
105, transport stream is modulated obtain the RF output signal;
After set-top box obtains transport stream, can again modulate this transport stream, concrete modulation system can be Digital Modulation, or the digital-to-analogue conversion modulation, or the modulation system of other types, is not construed as limiting herein.
Comprise the output frequency point information in RF output signal after modulation, this output frequency point information is the acquiescence frequency, or the frequency that is arranged by the user.
106, the RF output signal is sent to each TV by the TV distributor.
Set-top box to transport stream modulate obtain the RF output signal after, can export this RF output signal to the TV distributor by cable television line, the TV distributor can export this RF output signal to each the auxiliary TV that is connected with the TV distributor, so that auxiliary TV is watched TV programme in the appointed program scope.
Because set-top box is processed signal corresponding to each programme information in the appointed program scope, so auxiliary TV can select program to watch in these programs by TV remote controller.
in the present embodiment, set-top box is after receiving the RF input signal, can select according to each programme information in the appointed program scope corresponding frequency in the RF input signal, the programme information of namely selecting according to the user is selected corresponding frequency in the RF input signal, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises all TV programme in the appointed program scope in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs to watch separately TV programme within this appointed program scope, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
The above is illustrated television signal transmission method of the present invention from the angle of set-top box, and the below describes television signal transmission method of the present invention from the angle of TV, sees also Fig. 2, and another embodiment of television signal transmission method of the present invention comprises:
201, the RF output signal that sends by TV distributor receiving set up box;
In the present embodiment, auxiliary TV can be by the RF output signal of TV distributor receiving set up box transmission, this RF output signal is by set-top box, frequency corresponding in the RF input signal to be carried out obtaining after demodulation, descrambling and modulation, concrete acquisition process and the process of aforementioned middle description embodiment illustrated in fig. 1 are similar, repeat no more herein.
202, select corresponding frequency according to each programme information in the appointed program scope in the RF output signal;
Auxiliary TV is after the RF output signal that receives the set-top box transmission, and the user can select according to each programme information in the program scope that sets in advance corresponding frequency in the RF output signal.
Need to prove, the program scope in the present embodiment is identical with the program scope of aforementioned middle description embodiment illustrated in fig. 1, repeats no more herein.
203, the frequency of selecting is carried out demodulation and obtain TV signal in the RF output signal.
Auxiliary TV is after having selected frequency, can carry out demodulation and follow-up signal processing operations obtains TV signal to this frequency, auxiliary TV can be preserved the signal of each program in the appointed program scope, can play corresponding TV programme to the remote control of this auxiliary TV to the user according to the user afterwards.
In the present embodiment, auxiliary TV can receive the RF output signal that set-top box sends by the TV distributor, this RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by set-top box, so auxiliary TV can both be watched TV programme separately within the appointed program scope, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
For ease of understanding, the below describes television signal transmission method of the present invention with an instantiation, sees also Fig. 3:
The RF input signal is input in the demodulator of set-top box, can comprise several frequencies in this RF input signal, can carry some railway digital programs on each frequency, and this RF input signal is from the programme signal of operator, and the inside comprises all programme informations.
In the present embodiment, the user can arrange the program scope in advance on set-top box, this program scope refers to the TV Festival purpose range that auxiliary TV (being TV B shown in Figure 3, C and D) can be watched, this scope can set up on their own according to user's request, and the interface of setting can be as shown in Figure 4.
Fig. 4 the page is set, the user can see complete the rendition list, the user selects on the basis of input the rendition list, the rendition list of the own individual's output of editor.
The program frequency point of output generally Uses Defaults just passablely, and set-top box arranges according to the frequency of national standard, the reasonable distribution resource, and frequency that perhaps also can user's setting specifically is not construed as limiting herein.
The user can select numeral or analog signal to export according to the situation of television set support:
(code check by program determines because frequency of digital signal can carry multi-channel program, for example the code check of a program is 6M, a frequency can carry 6 programs), frequency of analog signal can only carry a program, so when the user selected output type to be numeral, the RF output signal can be exported more program.
In the present embodiment, the basic format information of the programme information of reader top box can be as shown in table 1:
Table 1
| Sequence number | Programm name | | Program number | |
| 1 | One, central authorities | 63MHz | |
|
| 2 | Two, central authorities | 63MHz | |
|
| 3 | Three, central | 651MHz | Program | 1 |
| 4 | Four, central | 659MHz | Program | 1 |
| 5 | Five, central | 677MHz | Program | 1 |
" frequency " in table 1 refers to the residing frequency of this program, " program number " is in the different programs of same frequency in order to differentiation, because frequency of digital signal can carry a plurality of programs, so when having a plurality of programs to be in same frequency, need to use program number to distinguish.
Need to prove, what show in Fig. 4 and table 1 is only partial programme information, and the form of other programme information is similar, is not construed as limiting herein.
Suppose that the user has selected one, central authorities wherein, five programs as auxiliary TV watching of two, central authorities and central authorities, and also at the program of watching one, central authorities, set-top box can generate output the rendition list, and is specifically as shown in table 2 with the direct-connected main TV of set-top box (being TV A):
Table 2
" output frequency " in table 2 represents the frequency in the residing RF output signal of this program, " program number " is in the different programs of same frequency in order to differentiation, because frequency of digital signal can carry a plurality of programs, so when having a plurality of programs to be in same frequency, need to use program number to distinguish.
After set-top box has been determined output the rendition list, utilize demodulator to carry out the frequency locking demodulation to all input frequencies in this output the rendition list and obtain scrambling TS, comprise one, central authorities in this scrambling TS, programme information after the scrambling that two, central authorities and central authorities are five, the demodulator in the present embodiment can carry out the while demodulation to multifrequency point.
The scrambling TS that obtains after demodulation is transfused to descrambler, this descrambler carries out obtaining TS after descrambling to this scrambling TS, comprise one, central authorities in this TS, the programme information after the descrambling that two, central authorities and central authorities are five, the descrambler in the present embodiment can carry out the while descrambling to Polymera.
A part that comprises the programme information of one, central authorities in this TS is transfused to decoder, by decoder to this TS generation audio-video signal of decoding, and by HDMI (High Definition Multimedia Interface) (HDMI, High Definition Multimedia Interface), or color difference components interface (YPbPr), or composite video broadcast singal (CVBS, Composite Video Broadcast Signal) interface, perhaps other similar interfaces directly export TV A to and play, and TV A can watch the content of one, central authorities.
Another road TS is transfused to digital modulator and modulates, this digital modulator is to one, the central authorities in TS, programme information after the descrambling that two, central authorities and central authorities are five is modulated and is obtained the RF output signal, and the digital modulator in the present embodiment can be modulated simultaneously to Polymera.
Need to prove, considering to have some TVs not support digital form in auxiliary TV, after generating audio-video signal so at decoder, TS is decoded, this audio-video signal input digital-to-analogue conversion modulator can also be carried out analog-modulated, and the result of the result that will modulate and digital modulator is in the lump as the RF output signal.
Be understandable that, if auxiliary TV is all supported digital form, can not need the digital-to-analogue conversion modulator.
The RF output signal arrives each auxiliary TV by the TV distributor, auxiliary TV adopts the function of television set automatic search to search for the program in the RF output signal, owing to only comprising one, central authorities in the RF output signal, the program that two, central authorities and central authorities are five, so auxiliary TV can be determined the frequency of 56MHz is carried out demodulation according to the content of above-mentioned table 2, obtain one, central authorities, the program that two, central authorities and central authorities are five, the user of auxiliary TV can use the auxiliary TV of remote controller control of auxiliary TV to carry out program switching, the operations such as Sound control.
Need to prove, if only have in actual applications an auxiliary TV, also can not need the TV distributor, and directly the RF output signal is connected to this auxiliary TV.
in the present embodiment, set-top box is after receiving the RF input signal, can select according to each programme information in the appointed program scope corresponding frequency in the RF input signal, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises all TV programme in the appointed program scope in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs to watch separately TV programme within this appointed program scope, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
Two, provide TV programme according to the programme information of the target program of the current selection of user to the TV of correspondence:
In above-described embodiment, the user can arrange the program scope in advance on set-top box, set-top box can export the programme signal in this program scope to each auxiliary TV, by these programs of auxiliary television-viewing, restriction due to the set-top box processes ability, it is very large that this program scope generally can not arrange, when the way of output is numeral, generally be no more than 40 programs, when the way of output is simulation, generally be no more than 10 programs, so auxiliary TV possibly can't be watched whole TV programme, the below is described the another kind of television signal transmission method in the present invention:
See also Fig. 5, another embodiment of television signal transmission method of the present invention comprises:
501, receive RF input signal and control signal;
In the present embodiment, set-top box can receive from the server of digital-TV operator the RF input signal, can comprise several frequencies in this RF input signal, can carry some railway digital programs on each frequency.
The concrete process that receives the RF input signal is those skilled in the art's common practise, specifically is not construed as limiting herein.
Need to prove, set-top box can also be from auxiliary television reception to control signal, this control signal can be sent by the remote controller with auxiliary TV binding, this remote controller can pass through the RF radio channel, or infrared channel, or the mode such as cable television sends control signal to set-top box, can also adopt equally other mode to send control signal, specifically is not construed as limiting herein.
Described control signal in the present embodiment is corresponding with the programme information of the target program that the user selects, the program of this target program in order to indicate the current expectation of auxiliary TV to watch.In the present embodiment, also be appreciated that, control signal comprises the programme information of the target program that the user selects, and this control signal is used for auxiliary TV to the request of set-top box, with the corresponding target program of programme information of user's selection included in request Play Control signal.
The programme information of the target program of 502, selecting according to the user is selected the frequency of correspondence in the RF input signal;
In the present embodiment, after set-top box receives control signal, therefrom parse the programme information of target program, and select corresponding frequency according to the programme information of this target program in the RF input signal.
503, frequency is carried out demodulation and obtain the scrambling transport stream;
504, the scrambling transport stream is carried out descrambling and obtain transport stream;
Step 503 in the present embodiment processing procedure to signal in 504 is those skilled in the art's common practise, is not construed as limiting herein.
505, transport stream is modulated obtain the RF output signal;
After set-top box obtains transport stream, can again modulate this transport stream, concrete modulation system can be Digital Modulation, or the digital-to-analogue conversion modulation, or the modulation system of other types, is not construed as limiting herein.
Comprise the output frequency point information in RF output signal after modulation, this output frequency point information is the acquiescence frequency, or the frequency that is arranged by the user.
506, the RF output signal is sent to each TV by the TV distributor.
Set-top box to transport stream modulate obtain the RF output signal after, can export this RF output signal to the TV distributor by cable television line, the TV distributor can export this RF output signal to each the auxiliary TV that is connected with the TV distributor, so that auxiliary TV is watched corresponding TV programme according to the programme information of target program.
Because set-top box is processed signal corresponding to the programme information of target program, so auxiliary TV can be watched the target program by TV remote controller.
in the present embodiment, set-top box is after receiving RF input signal and control signal, the programme information of the target program that can select according to the user is selected the frequency of correspondence in the RF input signal, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises the target program in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs can watch the target program, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
The above is illustrated television signal transmission method of the present invention from the angle of set-top box, and the below describes television signal transmission method of the present invention from the angle of TV, sees also Fig. 6, and another embodiment of television signal transmission method of the present invention comprises:
601, transmit control signal to set-top box;
In the present embodiment, the remote controller of binding with TV can send control signal to set-top box, includes the programme information of the target program of user's selection in this control signal, the program of this target program in order to indicate the current expectation of auxiliary TV to watch.
This remote controller can pass through the RF radio channel, or infrared channel, or the mode such as cable television sends control signal to set-top box, can also adopt equally other mode to send control signal, specifically is not construed as limiting herein.
602, the RF output signal that sends by TV distributor receiving set up box;
In the present embodiment, auxiliary TV can be by the RF output signal of TV distributor receiving set up box transmission, this RF output signal is by set-top box, frequency corresponding in the RF input signal to be carried out obtaining after demodulation, descrambling and modulation, concrete acquisition process and the process of aforementioned middle description embodiment illustrated in fig. 5 are similar, repeat no more herein.
603, the programme information of selecting according to the user is selected corresponding frequency in the RF output signal;
Auxiliary TV after receiving the RF output signal that set-top box sends, can according to before with control signal that the remote controller of self binding sends in the programme information of target program select corresponding frequency in the RF output signal.
604, the frequency of selecting is carried out demodulation and obtain TV signal in the RF output signal.
Auxiliary TV can carry out demodulation and follow-up signal processing operations obtains TV signal to this frequency after having selected frequency, auxiliary TV can be watched the target program.
In the present embodiment, auxiliary TV can receive the RF output signal that set-top box sends by the TV distributor, this RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by set-top box, so auxiliary TV can be watched the target program, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
For ease of understanding, the below describes television signal transmission method of the present invention with an instantiation, sees also Fig. 7:
The RF input signal is input in the demodulator of set-top box, can comprise several frequencies in this RF input signal, can carry some railway digital programs on each frequency, and this RF input signal is from the programme signal of operator, and the inside comprises all programme informations.
In the present embodiment, the user can bind the corresponding relation between each remote controller and each auxiliary TV (being TV B shown in Figure 7, C and D) in advance, and the process of this binding can be arranged by the user, and the interface of setting can be as shown in Figure 8.
Fig. 8 the page is set, the user can bind the corresponding relation between remote controller and TV, concrete binding procedure is not construed as limiting herein.
Need to prove, if main TV (TV A) directly is connected with set-top box, TV A also can adopt other remote control mode, perhaps by the user directly on set-top box the mode of Push switch set-top box is controlled, so just need not to bind the relation between TV A and remote controller.
The program frequency point of set-top box output generally Uses Defaults just passable, and set-top box arranges according to the frequency of national standard, the reasonable distribution resource, and frequency that perhaps also can user's setting specifically is not construed as limiting herein.
The user can select numeral or analog signal to export according to the situation of television set support:
(code check by program determines because frequency of digital signal can carry multi-channel program, for example the code check of a program is 6M, a frequency can carry 6 programs), frequency of analog signal can only carry a program, so when the user selected output type to be numeral, the RF output signal can be exported more program.
In the present embodiment, the basic format information of the programme information of reader top box can be as shown in table 3:
Table 3
| Sequence number | Programm name | | Program number | |
| 1 | One, central authorities | 63MHz | |
|
| 2 | Two, central authorities | 63MHz | |
|
| 3 | Three, central | 651MHz | Program | 1 |
| 4 | Four, central | 659MHz | Program | 1 |
| 5 | Five, central | 677MHz | Program | 1 |
" frequency " in table 3 refers to the residing frequency of this program, " program number " is in the different programs of same frequency in order to differentiation, because frequency of digital signal can carry a plurality of programs, so when having a plurality of programs to be in same frequency, need to use program number to distinguish.
Need to prove, what show in table 3 is only partial programme information, and the form of other programme information is similar, is not construed as limiting herein.
The postulated mechanism top box has been received two control signals, be respectively the remote controller transmission that TV A and TV B bind separately, wherein, the programme information of the target program in the control signal that TV A sends is two, central authorities, the programme information of the target program in the control signal that TV B sends is five, central authorities, set-top box can generate output the rendition list, and is specifically as shown in table 4:
Table 4
" output frequency " in table 4 represents the frequency in the residing RF output signal of this program, " program number " is in the different programs of same frequency in order to differentiation, because frequency of digital signal can carry a plurality of programs, so when having a plurality of programs to be in same frequency, need to use program number to distinguish.
After set-top box has been determined output the rendition list, utilize demodulator to carry out the frequency locking demodulation to all input frequencies in this output the rendition list and obtain scrambling TS, comprise the programme information after the scrambling of five of two, central authorities and central authorities in this scrambling TS, the demodulator in the present embodiment can carry out the while demodulation to multifrequency point.
The scrambling TS that obtains after demodulation is transfused to descrambler, and this descrambler carries out obtaining TS after descrambling to this scrambling TS, comprises the programme information after two, central authorities and the central authorities descrambling of five in this TS, and the descrambler in the present embodiment can carry out the while descrambling to Polymera.
Comprise central authorities' part of two in this TS and be transfused to decoder, to this TS generation audio-video signal of decoding, and pass through HDMI by decoder, or YPbPr, or the CVBS interface, perhaps other similar interfaces directly export TV A to and play, and TV A can watch the content of two, central authorities.
Another road TS is transfused to digital modulator and modulates, the programme information of this digital modulator after to two, the central authorities in TS and the central authorities descrambling of five modulated and obtained the RF output signal, and the digital modulator in the present embodiment can be modulated simultaneously to Polymera.
Need to prove, considering to have some TVs not support digital form in auxiliary TV, after generating audio-video signal so at decoder, TS is decoded, this audio-video signal input digital-to-analogue conversion modulator can also be carried out analog-modulated, and the result of the result that will modulate and digital modulator is in the lump as the RF output signal.
Be understandable that, if auxiliary TV is all supported digital form, can not need the digital-to-analogue conversion modulator.
The RF output signal arrives each auxiliary TV by the TV distributor, auxiliary TV adopts the function of television set automatic search to search for the program in the RF output signal, programme information according to the target program, determine the frequency to 561MHz is carried out demodulation in above-mentioned table 4, can watch the program of five, central authorities.
The user of auxiliary TV can use the remote controller continuation controller top box with auxiliary TV binding, thereby realizes that program switches, the operations such as Sound control.
Need to prove, if only have in actual applications an auxiliary TV, also can not need the TV distributor, and directly the RF output signal is connected to this auxiliary TV.
In the present embodiment, set-top box is after receiving RF input signal and control signal, can select corresponding frequency in the RF input signal according to the programme information of target program, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises the target program in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs can watch the target program, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
The below introduces the set-top box in the embodiment of the present invention, sees also Fig. 9, and embodiment of set-top box of the present invention comprises:
Demodulator of PM signal PM 902, the programme information that is used for selecting according to the user is selected corresponding frequency at the RF input signal, and frequency is carried out demodulation obtains the scrambling transport stream;
Each programme information in the program scope that demodulator of PM signal PM 902 in the present embodiment specifically can be used for selecting according to the user who sets in advance is selected corresponding frequency at the RF input signal, and frequency is carried out demodulation obtains the scrambling transport stream.
Set-top box in the present embodiment can further include:
Decoding signals 906 is used for the transport stream that the signal descrambler obtains is decoded and exported to and the direct-connected TV of set-top box.
Digital modulator is used for that transport stream is carried out Digital Modulation and obtains digital RF output signal;
And/or,
The digital-to-analogue conversion modulator is used for that transport stream is carried out the digital-to-analogue conversion modulation and obtains the analog RF output signal;
Comprise the output frequency point information in numeral RF output signal and analog RF output signal, the output frequency point information is the acquiescence frequency, or the frequency that is arranged by the user.
For ease of understanding, the below describes the relation between each unit of set-top box in the present embodiment with an instantiation:
In the present embodiment, signal input part 901 can receive from the server of digital-TV operator the RF input signal, can comprise several frequencies in this RF input signal, can carry some railway digital programs on each frequency.
The concrete process that receives the RF input signal is those skilled in the art's common practise, specifically is not construed as limiting herein.
In the present embodiment, the user can arrange the program scope that each auxiliary TV can receive in advance in set-top box, and the size of this program scope can determine according to the disposal ability of set-top box, specifically is not construed as limiting herein.
Need to prove, in the present embodiment, the TV that directly is connected by high definition cable with set-top box is main TV, and the TV that is connected with set-top box by the TV distributor is auxiliary TV.
After signal input part 901 receives the RF input signal, demodulator of PM signal PM 902 can be selected according to each programme information in this appointed program scope corresponding frequency in the RF input signal, namely search the frequency at these programme informations place, and frequency is carried out demodulation obtain the scrambling transport stream;
903 pairs of scrambling transport stream of signal descrambler are carried out descrambling and are obtained transport stream;
After signal descrambler 903 obtained transport stream, signal modulator 904 can be modulated this transport stream again, and concrete modulation system can be Digital Modulation, or the digital-to-analogue conversion modulation, or the modulation system of other types, was not construed as limiting herein.
After 904 pairs of transport stream of signal modulator are modulated and are obtained the RF output signal, signal output part 905 can export this RF output signal to the TV distributor by cable television line, the TV distributor can export this RF output signal to each the auxiliary TV that is connected with the TV distributor, so that auxiliary TV is watched TV programme in the appointed program scope.
Because set-top box is processed signal corresponding to each programme information in the appointed program scope, so auxiliary TV can select program to watch in these programs by TV remote controller.
in the present embodiment, signal input part 901 is after receiving the RF input signal, demodulator of PM signal PM 902 can be selected according to each programme information in the appointed program scope corresponding frequency in the RF input signal, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises all TV programme in the appointed program scope in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs to watch separately TV programme within this appointed program scope, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
need to prove, specifically to select corresponding frequency according to each programme information in the appointed program scope with demodulator of PM signal PM in the RF input signal in top embodiment, and frequency is carried out demodulation, and to obtain the scrambling transport stream be that example describes, in actual applications, set-top box in the present embodiment can also comprise the control signal receiver, at this moment, demodulator of PM signal PM can be corresponding according to this control signal the programme information of target program select corresponding frequency in the RF input signal, and frequency is carried out demodulation obtain the scrambling transport stream, specifically see also Figure 10, another embodiment of set-top box of the present invention comprises:
Demodulator of PM signal PM 1003 is used for selecting corresponding frequency according to the programme information of target program at the RF input signal, and frequency is carried out demodulation obtains the scrambling transport stream;
Set-top box in the present embodiment can further include:
Decoding signals 1007 is used for the transport stream that the signal descrambler obtains is decoded and exported to and the direct-connected TV of set-top box.
Digital modulator is used for that transport stream is carried out Digital Modulation and obtains digital RF output signal;
And/or,
The digital-to-analogue conversion modulator is used for that transport stream is carried out the digital-to-analogue conversion modulation and obtains the analog RF output signal;
Comprise the output frequency point information in numeral RF output signal and analog RF output signal, the output frequency point information is the acquiescence frequency, or the frequency that is arranged by the user.
For ease of understanding, the below describes the relation between each unit of set-top box in the present embodiment with an instantiation:
In the present embodiment, signal input part 1001 can receive from the server of digital-TV operator the RF input signal, can comprise several frequencies in this RF input signal, can carry some railway digital programs on each frequency.
The concrete process that receives the RF input signal is those skilled in the art's common practise, specifically is not construed as limiting herein.
Need to prove, control signal receiver 1002 can also be from auxiliary television reception to control signal, this control signal can be sent by the remote controller with auxiliary TV binding, this remote controller can pass through the RF radio channel, or infrared channel, or the mode such as cable television sends control signal to set-top box, can also adopt equally other mode to send control signal, specifically is not construed as limiting herein.
The programme information that includes the target program in control signal in the present embodiment, the program of this target program in order to indicate the current expectation of auxiliary TV to watch.
In the present embodiment, after control signal receiver 1002 receives control signal, demodulator of PM signal PM 1003 therefrom parses the programme information of target program, selects corresponding frequency according to the programme information of this target program in the RF input signal, and frequency is carried out demodulation obtains the scrambling transport stream;
1004 pairs of scrambling transport stream of signal descrambler are carried out descrambling and are obtained transport stream;
After signal descrambler 1004 obtained transport stream, signal modulator 1005 can be modulated this transport stream again, and concrete modulation system can be Digital Modulation, or the digital-to-analogue conversion modulation, or the modulation system of other types, was not construed as limiting herein.
After 1005 pairs of transport stream of signal modulator are modulated and are obtained the RF output signal, signal output part 1006 can export this RF output signal to the TV distributor by cable television line, the TV distributor can export this RF output signal to each the auxiliary TV that is connected with the TV distributor, so that auxiliary TV is watched corresponding TV programme according to the programme information of target program.
Because set-top box is processed signal corresponding to the programme information of target program, so auxiliary TV can be watched the target program by TV remote controller.
in the present embodiment, signal input part 1001 and control signal receiver 1002 are after receiving RF input signal and control signal, demodulator of PM signal PM 1003 can be selected corresponding frequency according to the programme information of target program in the RF input signal, and frequency is carried out demodulation, demodulation output when can realize multi-channel program, the signal that comprises the target program in the signal of output, this signal can be dispensed to a plurality of TVs by the TV distributor, make these TVs can watch the target program, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
The below introduces the TV in the embodiment of the present invention, sees also Figure 11, and embodiment of TV of the present invention comprises:
Signal receiving end 1101 is used for the radio-frequency carrier RF output signal by the transmission of TV distributor receiving set up box, and the RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by set-top box;
At first describe as an example of " selecting corresponding frequency according to each programme information in the appointed program scope in the RF output signal " example in the present embodiment:
In the present embodiment, signal receiving end 1101 can be by the RF output signal of TV distributor receiving set up box transmission, this RF output signal is by set-top box, frequency corresponding in the RF input signal to be carried out obtaining after demodulation, descrambling and modulation, concrete acquisition process and the process of aforementioned middle description embodiment illustrated in fig. 1 are similar, repeat no more herein.
Signal receiving end 1101 is after the RF output signal that receives the set-top box transmission, and signal selector 1102 can be selected according to each programme information in the appointed program scope corresponding frequency in the RF output signal.
Need to prove, the program scope in the present embodiment is identical with the program scope of aforementioned middle description embodiment illustrated in fig. 1, repeats no more herein.
In the present embodiment, signal receiving end 1101 can receive the RF output signal that set-top box sends by the TV distributor, this RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by set-top box, so auxiliary TV can both be watched TV programme separately within the appointed program scope, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
In above-described embodiment, signal selector is selected corresponding frequency in the RF output signal according to each programme information in the appointed program scope, in actual applications, the programme information of the target program that signal selector also can be selected according to the user is selected the frequency of correspondence in the RF output signal, specifically see also Figure 12, another embodiment of TV of the present invention comprises:
Transmitting terminal 1201 is used for transmitting control signal to set-top box, and control signal is corresponding with the programme information of the target program that the user selects;
Signal receiving end 1202, be used for the radio-frequency carrier RF output signal by the transmission of TV distributor receiving set up box, the RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding with the programme information of target program in the RF input signal by set-top box;
For ease of understanding, the below describes the relation between each unit of TV in the present embodiment with an instantiation:
In the present embodiment, with the remote controller of TV binding, or the transmitting terminal 1201 of TV can send control signal to set-top box, includes the programme information of target program in this control signal, the program of this target program in order to indicate the current expectation of auxiliary TV to watch.
This transmitting terminal 1201 can pass through the RF radio channel, or infrared channel, or the mode such as cable television sends control signal to set-top box, can also adopt equally other mode to send control signal, specifically is not construed as limiting herein.
In the present embodiment, signal receiving end 1202 can be by the RF output signal of TV distributor receiving set up box transmission, this RF output signal is by set-top box, frequency corresponding in the RF input signal to be carried out obtaining after demodulation, descrambling and modulation, concrete acquisition process and the process of aforementioned middle description embodiment illustrated in fig. 5 are similar, repeat no more herein.
Signal receiving end 1202 is after the RF output signal that receives the set-top box transmission, and signal selector 1203 can be selected corresponding frequency according to the programme information of the target program in the control signal of transmitting terminal 1201 transmissions in the RF output signal.
In the present embodiment, signal receiving end 1202 can receive the RF output signal that set-top box sends by the TV distributor, this RF output signal is carried out obtaining after demodulation, descrambling and modulation to frequency corresponding in the RF input signal by set-top box, so auxiliary TV can be watched the target program, therefore use a set-top box can make many TVs independently watch TV programme, thereby reduced the cost of many TV watching TV programme.
The below introduces the television signal transmission system in the embodiment of the present invention, sees also Figure 13, and television signal transmission system embodiment of the present invention comprises:
Set-top box 1301, TV distributor 1302, some TVs 1303 and main TV 1304;
Set-top box 1301 in the present embodiment can be similar with the set-top box of aforementioned middle description embodiment illustrated in fig. 9, repeats no more herein;
TV 1303 in the present embodiment can be similar with the TV of aforementioned middle description embodiment illustrated in fig. 11, repeats no more herein.Perhaps,
Set-top box 1301 in the present embodiment can be similar with the set-top box of aforementioned middle description embodiment illustrated in fig. 10, repeats no more herein;
TV 1303 in the present embodiment can be similar with the TV of aforementioned middle description embodiment illustrated in fig. 12, repeats no more herein.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to complete by program, this program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
Above a kind of television signal transmission method provided by the present invention, set-top box and TV are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a television signal transmission method, is characterized in that, comprising:
Set-top box received RF carrier wave RF input signal;
Select corresponding frequency according to the programme information that the user selects in described RF input signal;
Described frequency is carried out demodulation obtain the scrambling transport stream;
Described scrambling transport stream is carried out descrambling obtain transport stream;
Described transport stream is modulated obtain the RF output signal;
Described RF output signal is sent to each auxiliary TV by the TV distributor, makes TV programme corresponding to described auxiliary television-viewing, described auxiliary TV is connected with set-top box by the TV adapter;
The described programme information of selecting according to the user selects the step of corresponding frequency to comprise in described RF input signal:
Select corresponding frequency according to each programme information in the program scope of the user's selection that sets in advance in described RF input signal, described program scope refers to the TV Festival purpose range that auxiliary TV can be watched.
2. method according to claim 1, is characterized in that, the described programme information of selecting according to the user selects the step of corresponding frequency to comprise in described RF input signal:
Reception control signal, described control signal is corresponding with the programme information of the target program that the user selects;
The programme information of the target program of selecting according to described user is selected the frequency of correspondence in described RF input signal.
3. the described method of any one according to claim 1 to 2, is characterized in that, described set-top box is modulated described transport stream and obtained the RF output signal and comprise:
Described transport stream is carried out Digital Modulation obtain digital RF output signal, and/or described transport stream is carried out digital-to-analogue conversion modulation obtain the analog RF output signal;
Comprise the output frequency point information in described digital RF output signal and analog RF output signal, described output frequency point information is the acquiescence frequency, or the frequency that is arranged by the user.
4. method according to claim 1, is characterized in that, describedly described scrambling transport stream is carried out descrambling obtains also comprising after transport stream:
After being decoded, described transport stream is sent to by audio-video interface the TV that is connected with set-top box.
5. a set-top box, is characterized in that, comprising:
Signal input part is used for received RF carrier wave RF input signal;
Demodulator of PM signal PM, the programme information that is used for selecting according to the user is selected corresponding frequency at described RF input signal, and described frequency is carried out demodulation obtains the scrambling transport stream;
The signal descrambler is used for that described scrambling transport stream is carried out descrambling and obtains transport stream;
Signal modulator is used for described transport stream is modulated obtaining the RF output signal;
Signal output part is used for described RF output signal is sent to each auxiliary TV by the TV distributor, makes TV programme corresponding to described auxiliary television-viewing, and described auxiliary TV is connected with set-top box by the TV adapter;
Each programme information in the program scope that described demodulator of PM signal PM is further used for selecting according to the user who sets in advance is selected corresponding frequency in described RF input signal, and described frequency is carried out demodulation obtain the scrambling transport stream, described program scope refers to the TV Festival purpose range that auxiliary TV can be watched.
6. set-top box according to claim 5, is characterized in that, described set-top box also comprises:
The control signal receiver is used for reception control signal, and described control signal is corresponding with the programme information of the target program that the user selects;
Described demodulator of PM signal PM specifically is used for the programme information of the target program selected according to described user and selects corresponding frequency at described RF input signal, and described frequency is carried out demodulation obtains the scrambling transport stream.
7. the described set-top box of any one according to claim 5 to 6, is characterized in that, described set-top box also comprises:
Decoding signals is used for the transport stream that described signal descrambler obtains is decoded.
8. the described set-top box of any one according to claim 5 to 6, is characterized in that, described signal modulator comprises:
Digital modulator is used for that described transport stream is carried out Digital Modulation and obtains digital RF output signal;
And/or,
The digital-to-analogue conversion modulator is used for that described transport stream is carried out the digital-to-analogue conversion modulation and obtains the analog RF output signal;
Comprise the output frequency point information in described digital RF output signal and analog RF output signal, described output frequency point information is the acquiescence frequency, or the frequency that is arranged by the user.
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| CN 201010538283 CN102137304B (en) | 2010-10-29 | 2010-10-29 | Television signal transmission method, set top box and television |
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| CN103428557B (en) * | 2012-05-18 | 2016-12-07 | 华为终端有限公司 | The control method of a kind of Set Top Box, Set Top Box and system thereof |
| CN103826153A (en) * | 2012-11-19 | 2014-05-28 | 联想(北京)有限公司 | Video stream output method, device and system |
| CN105072484A (en) * | 2015-07-16 | 2015-11-18 | 成都北相赛勃科技有限公司 | Television multimedia publishing method, apparatus, system and control method |
| CN105657492A (en) * | 2015-12-29 | 2016-06-08 | 广州视源电子科技股份有限公司 | Television signal processing method, television signal processing device and television playing control system |
| CN114501126B (en) * | 2021-12-25 | 2024-03-15 | 深圳市广和通无线股份有限公司 | Video playing method, system and storage medium |
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| KR100454959B1 (en) * | 2002-04-30 | 2004-11-06 | 삼성전자주식회사 | Settop box system capable of watching digital broadcasting and watching method thereof |
| CN2790066Y (en) * | 2005-04-07 | 2006-06-21 | 深圳Tcl新技术有限公司 | Set-top box used for multiple TV set |
| CN1863285A (en) * | 2005-09-09 | 2006-11-15 | 华为技术有限公司 | Device for implementing one set-top-box to support multi-television sets |
| CN101132473A (en) * | 2006-08-23 | 2008-02-27 | 高奎 | Sharing device of digital TV set-top box |
| US8839300B2 (en) * | 2008-02-19 | 2014-09-16 | At&T Intellectual Property I, Lp | Method and system for presenting electronic programming guides |
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