CN100391259C - General signal generator for radio digital television TS flow - Google Patents
General signal generator for radio digital television TS flow Download PDFInfo
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- CN100391259C CN100391259C CNB2005100408524A CN200510040852A CN100391259C CN 100391259 C CN100391259 C CN 100391259C CN B2005100408524 A CNB2005100408524 A CN B2005100408524A CN 200510040852 A CN200510040852 A CN 200510040852A CN 100391259 C CN100391259 C CN 100391259C
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- sign indicating
- digital television
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- flow
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Abstract
The present invention discloses a general signal generator for cable digital television TS flow, which can alternate all TS flow program signals on a cable digital television broadcasting platform without changing PID parameters on a transmission multiplexer. Devices, such as a normal video test signal generation unit, a high definition (high definition television) / standard definition (standard television) selection unit, a video coding unit, a packing unit, a PID code range selection unit, a PID circulation generation unit, a data coding unit, a program multiplexing unit, etc. arranged in the general signal generator for cable digital television TS flow and relative technologies are used to produce the effect that video test signals of standard television and TS flow signals which have different PID codes and occur circularly are produced. The TS flow signals outputted by the present invention can replace digital television programs broadcast by any digital channel on the cable digital television broadcasting platform, replace original signals for broadcasting instantly when the digital television programs are intruded by illegal signals, and fill the gap that TS flow signals of cable digital television broadcasting platform can not be replaced quickly at present.
Description
Technical field
The present invention relates to a kind of pid parameter that on cable digital TV broadcast platform, does not need to change on the Transmission Multiplexer, just can flow the general signal generator for radio digital television TS flow that programme signal is replaced TS all on the platform.
Background technology
Along with popularizing and development of Digital Television, more and more Duo city is in order to satisfy the demand of broad masses of the people to entertainment, set up and have tens covers and broadcast platforms to the cable digital TV of over one hundred cover TV programme, the viewer colony of Digital Television is more and more growth also; So how to guarantee digital television program safety broadcast, prevent the problem that illegal signals intrusion having become related management layer and Digital Television network operators pay close attention to.And at present digit television broadcasting goes out to tackle in the process effective measures that illegal signals invades and only is: close corresponding channel modulator power supply, or take manually to change input programme signal source, change the mode of PID (packet identifier, Packet Identifier) the sign indicating number parameter setting on the Transmission Multiplexer simultaneously; The very first time of objectively having incured loss through delay the invasion of blocking-up illegal signals makes online operation equipment because of the frequent impaired probability of power supply that interrupts strengthens, and nonetheless also can't reach management level and the network operator requirement to the broadcast TV program broadcast management; Also will make a very bad impression when serious to society.
Summary of the invention
For addressing the above problem, the invention provides a kind of general signal generator for radio digital television TS flow.
A, the standard television video test signals, the process video encoding unit coding that are produced through normal video test signal generating unit produce elementary stream ES, produce the packetized elementary stream PES information with standard television video test signals feature through packaged unit again;
B, to determine to select whole PID sign indicating numbers by PID sign indicating number scope selected cell number still be to select partly PID sign indicating number number, and determined PID sign indicating number range information is passed to PID sign indicating number circulation generating unit, it is circulated according to certain rules according to selected PID sign indicating number scope produce different PID sign indicating number information;
C, that packetized elementary stream PES information and circulation are according to certain rules produced different PID sign indicating number information is unit multiplexed through program multiplexing, makes it to become cable digital TV is broadcasted the existing TS stream of platform signal can both to carry out the TS circulation signal that substitutes fully;
D, can adjust frequency and the cycle that different PID sign indicating numbers in the signal that general signal generator for radio digital television TS flow exports number occur arbitrarily, and selected part or whole different PID sign indicating numbers number are occurred and output according to the certain rules circulation in the TS stream signal of being exported by PID sign indicating number scope selected cell.
The TS that exported stream signal broadcasts at cable digital TV not to be needed artificially to change on the platform under the situation that pid parameter is provided with on the Transmission Multiplexer, substitutes in good time that applied cable digital TV broadcasts in the digital TV TS stream signals all on the platform any one or a plurality of TS stream signal broadcasts.Produced whole or one group of different PID sign indicating number number occur according to the certain rules circulation in TS stream signal one by one.PID form according to defined in the cable digital TV national standard is provided with part or all of PID sign indicating number arbitrarily, and allow its by controlled, adjustable frequency and loop cycle and out of Memory is multiplexing and output.The PES signal that will have a normal video test signal feature with have the single TS stream signal that auxiliary data that feature appears in number circulation of PID sign indicating number combines and generates.Broadcasting the nothing change that realizes TS stream on the platform at cable digital TV replaces.
General signal generator for radio digital television TS flow of the present invention can effectively solve the above-mentioned illegal signals invasion of blocking-up problem.It broadcasts the platform construction characteristics according to digital televi-sion principles and cable digital TV, adopt: the television video test signal of standard is had television video test signal feature by sample, encode, pack and increase the mode that different PID sign indicating numbers number and circulation repeat, equipment of the present invention can export and have whole PID sign indicating numbers number or the applied Digital Television of part is broadcasted the PID sign indicating number that using on the platform TS that repeats that number also circulates and flowed signal.On concrete the application, equipment output end of the present invention is linked into Digital Television broadcasts all TS stream signals all converge in the platform the matrix or the input port place of jumper wire rack; When the TV programme that some digital TV channels broadcasted on broadcasting platform suffers the illegal signals invasion like this, the flight crew can insert the television standard test signal TS stream that present device produced in the very first time by the mode of switching, do not needing manually to change under the situation that pid parameter is provided with on the Transmission Multiplexer, just alternative original signal broadcasts.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a concrete application drawing of the present invention.
Embodiment
As shown in Figure 1, the present invention is made up of several sections such as normal video test signal generating unit, high definition (high definition television)/SD (standard television) selected cell, video encoding unit, packaged unit, PID sign indicating number scope selected cell, PID sign indicating number circulation generating unit, digital coding unit and program multiplexing unit; Wherein: the normal video TSU test signal unit is sent the video test signals of the high definition that produced or SD into video encoding unit and is encoded, produce ES (elementary stream, Elementary Stream) stream, make ES stream become PES (packetized elementary stream, Paketized Elementary Stream) stream by packaged unit again; PID then at first determines that by PID sign indicating number scope selected cell the range of choice of PID sign indicating number number (can be a continuation code number, also can be interrupted yard number or whole yards numbers), PID sign indicating number number circulation generation generating unit will be the periodic cycle generation that radix carries out PID according to making TV produce a frame or counting the required bag quantity of deciding of frame complete image picture after the scope selection is determined, at last by the digital coding unit, the program multiplexing unit carries out PES stream and the auxiliary data that comprises pid information multiplexing, forms to satisfy having normal video test signal feature and having the digital television signal source of cycle P id information of cable digital TV transmission/broadcast standard-required.
As shown in Figure 2, be the application of general signal generator for radio digital television TS flow of the present invention on Digital Television broadcast platform, its application principle is: broadcast on the platform at cable digital TV, the TS stream signal that passes is down via satellite arranged respectively, the video simulation TV signal that passes via satellite, the TS signal that TV programme and present device provided that the TS stream signal that passes down by fiber optic network, the video simulation TV signal that passes down by fiber optic network and various places TV station manage by oneself etc., meter tens cover to over one hundred covers do not wait; The final form that all flows with single-unit order TS of above-mentioned signal converges on each input port of character matrix switch or jumper wire rack, and be connected to corresponding Transmission Multiplexer input respectively by matrix switcher or jumper wire rack, by Transmission Multiplexer according to broadcasting the platform General layout Plan, adopt the method that different PID sign indicating numbers number are set respectively with the TS stream signal that each self-corresponding single programs TS stream signal multiplexing is a Polymera, become radiofrequency signal through the QAM modulators modulate again and after blender mixes, be sent on the user terminal set-top box of each digital cable customers by hfc plant; When the TV programme of a certain digital channel was seen in user's choosing, then set-top box is just understood the signal of this program became the video/audio signal, finally shows on the television receiver screen.Under normal condition, the TS stream signal that present device provided is in holding state, do not have an effect, TV programme some or several (can reach in theory all) digital TV channels meets with when trespassing on broadcasting platform, operating personnel can press the matrix switch key or change the jumper wire rack interface in the very first time, allow TS stream signal provided by the present invention substitute original signal rapidly and arrive corresponding Transmission Multiplexer input port, after the PID sign indicating number in the TS signal that present device provided number is transmitted multiplexer and confirms, this signal just substitutes original signal smoothly and broadcasts, this moment the user the television receiver screen on to show what look will be standard television test signal provided by the present invention.
Claims (6)
1. general signal generator for radio digital television TS flow is characterized in that:
The standard television video test signals that A, process normal video test signal generating unit are produced, produce elementary stream ES through the video encoding unit coding, produce packetized elementary stream PES information through packaged unit again with standard television video test signals feature;
B, to determine to select whole PID sign indicating numbers by PID sign indicating number scope selected cell number still be to select partly PID sign indicating number number, and determined PID sign indicating number range information is passed to PID sign indicating number circulation generating unit, it is circulated according to certain rules according to selected PID sign indicating number scope produce different PID sign indicating number information;
C, that packetized elementary stream PES information and circulation are according to certain rules produced different PID sign indicating number information is unit multiplexed through program multiplexing, makes it to become cable digital TV is broadcasted the existing TS stream of platform signal can both to carry out the TS circulation signal that substitutes fully;
D, can adjust frequency and the cycle that different PID sign indicating numbers in the signal that general signal generator for radio digital television TS flow exports number occur arbitrarily, and selected part or whole different PID sign indicating numbers number are occurred and output according to the certain rules circulation in the TS stream signal of being exported by PID sign indicating number scope selected cell.
2. general signal generator for radio digital television TS flow according to claim 1, it is characterized in that: the TS that exported stream signal broadcasts at cable digital TV not to be needed artificially to change on the platform under the situation that pid parameter is provided with on the Transmission Multiplexer, substitutes in good time that applied cable digital TV broadcasts in the digital TV TS stream signals all on the platform any one or a plurality of TS stream signal broadcasts.
3. general signal generator for radio digital television TS flow according to claim 1 is characterized in that: produced whole or one group of different PID sign indicating number number occur according to the certain rules circulation in TS stream signal one by one.
4. general signal generator for radio digital television TS flow according to claim 1, it is characterized in that: the PID form according to defined in the cable digital TV national standard is provided with part or all of PID sign indicating number arbitrarily, and allow its by controlled, adjustable frequency and loop cycle and out of Memory is multiplexing and output.
5. general signal generator for radio digital television TS flow according to claim 1 is characterized in that: the PES signal that will have a normal video test signal feature with have the single TS stream signal that auxiliary data that feature appears in number circulation of PID sign indicating number combines and generates.
6. general signal generator for radio digital television TS flow according to claim 1 is characterized in that: broadcast the nothing change that realizes TS stream on the platform at cable digital TV and replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100408524A CN100391259C (en) | 2005-07-01 | 2005-07-01 | General signal generator for radio digital television TS flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100408524A CN100391259C (en) | 2005-07-01 | 2005-07-01 | General signal generator for radio digital television TS flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1717043A CN1717043A (en) | 2006-01-04 |
| CN100391259C true CN100391259C (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100408524A Expired - Fee Related CN100391259C (en) | 2005-07-01 | 2005-07-01 | General signal generator for radio digital television TS flow |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020101991A1 (en) * | 1999-12-13 | 2002-08-01 | Kinney Bacon | Method of identifying multiple digital streams within a multplexed signal |
| US20030123657A1 (en) * | 2001-12-31 | 2003-07-03 | General Instrument Corporation | Methods and apparatus for simultaneously decrypting multiple services received on separate multiplexed transport streams |
| US20040252833A1 (en) * | 2003-03-26 | 2004-12-16 | Milner Jonathan Richard | Common interface controller and method of descrambling transport stream channels |
| CN1589008A (en) * | 2004-09-20 | 2005-03-02 | 北京数码视讯科技有限公司 | Method for realizing region locking |
-
2005
- 2005-07-01 CN CNB2005100408524A patent/CN100391259C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020101991A1 (en) * | 1999-12-13 | 2002-08-01 | Kinney Bacon | Method of identifying multiple digital streams within a multplexed signal |
| US20030123657A1 (en) * | 2001-12-31 | 2003-07-03 | General Instrument Corporation | Methods and apparatus for simultaneously decrypting multiple services received on separate multiplexed transport streams |
| US20040252833A1 (en) * | 2003-03-26 | 2004-12-16 | Milner Jonathan Richard | Common interface controller and method of descrambling transport stream channels |
| CN1589008A (en) * | 2004-09-20 | 2005-03-02 | 北京数码视讯科技有限公司 | Method for realizing region locking |
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| Publication number | Publication date |
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| CN1717043A (en) | 2006-01-04 |
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Granted publication date: 20080528 Termination date: 20100701 |