CN101808238B - Digital television integrated machine dominant frequency point identification method and digital television integrated machine - Google Patents
Digital television integrated machine dominant frequency point identification method and digital television integrated machine Download PDFInfo
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- CN101808238B CN101808238B CN 200910105460 CN200910105460A CN101808238B CN 101808238 B CN101808238 B CN 101808238B CN 200910105460 CN200910105460 CN 200910105460 CN 200910105460 A CN200910105460 A CN 200910105460A CN 101808238 B CN101808238 B CN 101808238B
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Abstract
The invention is applied to a digital television integrated machine and provides a digital television integrated machine dominant frequency point identification method and the digital television integrated machine. The method comprises the following steps of: a, executing a channel-searching process, locking an effective frequency point and receiving a TS stream; b, searching data corresponding to a digital television service from the received TS stream, and if the data corresponding to one service is found, storing the frequency point as the dominant frequency point of the service and turning to step c, otherwise, directly turning to the step c; and c, judging whether the channel-searching process is finished or not, if so, ending up the procedures, otherwise locking the next effective frequency point, receiving the TS stream and turning to the step b. The invention provides a technical scheme so that the digital television integrated machine can acquire the data required by various services rapidly and reduce the waiting time of a user when the user uses various digital television services.
Description
Technical field
The invention belongs to the digital television techniques field, relate in particular to the method for digital TV integrated machine and identification dominant frequency point thereof.
Background technology
Existing digital TV integrated machine during fabrication, manufacturer tends to develop a product that can sell for all cities, the whole nation, and be difficult to the definition of the operator in all cities, the whole nation is all included in the Products Development stage, and various places operator is in from sending analog signal to the translate phase that sends digital signal in several years of future, the system business kind is also a lot, but all can carry out EPG usually, business such as data broadcasting and software upgrading, the broadcasting that operator is generally these business arranges the dominant frequency point, so that the convenient professional use of carrying out with the balance channel bandwidth.
Because the setting of dominant frequency point is carried out according to the service conditions of oneself by each operator, there are very big difficulties in this situation caused the orienting towards the whole country digital TV integrated machine in market in function aspects such as exploitation EPG, data broadcasting, because product is sold to different cities, different regions, finish data that these functions will obtain deposit Frequency point and form is all had any different.
The mode of the processing dominant frequency point of existing Digital Television is mainly following two classes: a class is to set in system in product development; Second class is that the function that the user imports dominant frequency point is set in System menu.First kind of mode is difficult to be applicable to digital TV integrated machine, because the digital TV integrated machine in the market that orients towards the whole country can't be determined the dominant frequency point of each operator one by one when manufacturing and designing.When the second way is applied to digital TV integrated machine, require the user to possess certain professional knowledge, and operator can provide main frequency point information to the user, there is certain difficulty in this to the domestic consumer that uses digital TV integrated machine.
Therefore, be necessary to provide a kind of technical scheme, can be so that digital TV integrated machine be identified the dominant frequency point of miscellaneous service automatically, thus be user-friendly to various digital television business.
Summary of the invention
The object of the present invention is to provide a kind of digital television integrated machine dominant frequency point identification method and digital TV integrated machine, be intended to solve digital TV integrated machine to the problem of professional dominant frequency point identification.
The present invention is achieved in that a kind of digital television integrated machine dominant frequency point identification method, and described method comprises:
The platform flow process is searched in a, execution, locks an effective frequency, receives TS stream;
B, from the TS that receives stream, search the data of digital television business correspondence, if after finding certain professional corresponding data, with described frequency as this professional dominant frequency point storage, commentaries on classics step c, otherwise directly change step c;
C, search platform and finish? if, process ends, otherwise the next effectively frequency of locking receives TS stream, changes step b.
Wherein step a specifically comprises:
A1, from the physical channel table, read a frequency, and be set to tuning it and demultiplexing module, behind signal stabilization, receive TS stream by demultiplexing.
Wherein step b specifically comprises:
B1, in described TS stream, search the EIT table, if find the EIT table that Table ID is 0x4E, 0x4f, 0x50～0x5f and 0x60～0x6f, then store described frequency into memory as the dominant frequency point of EPG business, change step b2; Otherwise directly forward step b2 to;
B2, in described TS stream, search the SDT table, if can find the SDT table that Table ID is 0x42 and 0x46, then store described frequency into memory as logical channel title dominant frequency point, change step b3; Otherwise directly forward step b3 to;
B3, in described TS stream, search the SDT table, if can find Table ID and be the SDT table of 0x42, and this table comprises service_descriptor () descriptor, include type of service in the described descriptor and be the program of 0x0c data broadcasting, then store described frequency into memory as data broadcasting dominant frequency point, forward step c then to; Otherwise directly forward step c to.
Wherein also comprise after the step c:
D, start certain digital television business, this business frequency points corresponding that reads storage writes tuning and demultiplexing module.
Described business is EPG business or logical channel name service or data broadcast service.
The present invention also provides a kind of digital TV integrated machine, and described digital TV integrated machine comprises MCU, memory and tuning and demultiplexing module, wherein:
Describedly tuningly be used for receiving the TV signal that each frequency is corresponding in the physics channel table with demultiplexing module, and output TS flows to described MCU;
Described MCU is used for searching the data of digital television business correspondence from described TS stream, and is used for after finding certain professional corresponding data described frequency being stored in the described memory as this professional dominant frequency point;
Described memory be used for storing miscellaneous service dominant frequency point and with the corresponding relation of miscellaneous service.
Described digital TV integrated machine also comprises the control signal receiver module that links to each other with MCU, described control signal receiver module is used for receiving the control signal that starts program search, described control signal is transferred to described MCU, described MCU also is used for according to the parsing of described control signal is written to described tuning and demultiplexing module with each frequency in the described physical channel table, controls describedly tuningly to search platform with demultiplexing module.
Described control signal receiver module is used for receiving the control signal that starts described business, described control signal is transferred to described MCU, described MCU also is used for according to the parsing of described control signal is read described professional corresponding dominant frequency point from described memory described dominant frequency point being written to described tuning and demultiplexing module.
Described MCU comprise successively connect search platform frequency point setting module, dominant frequency point judge module and dominant frequency point parameter output module, the described platform frequency point setting module of searching is used for the frequency point setting in the described physical channel tabulation to described tuning and demultiplexing module, described dominant frequency point judge module is used for searching the data of miscellaneous service correspondence from described TS stream, and judge whether described frequency is certain professional corresponding dominant frequency point, and described dominant frequency point output module is used for that dominant frequency is put parameter and outputs to described memory stores.
The present invention overcomes the deficiencies in the prior art, in the searching channels of all-in-one digital television process, behind effective frequency of locking, just in current TS stream, search the data of the correspondence of specific transactions such as EPG, data broadcasting, in case find certain professional corresponding data, just it be saved in the memory as this professional dominant frequency point.After searching platform and finishing, when the user used certain professional, system just read the parameter of dominant frequency point from memory according to type of service, lock onto this frequency then, thereby obtains the needed related data of this business.Technical scheme provided by the invention makes the Digital Television one can obtain the needed data of miscellaneous service fast, has reduced the stand-by period of user when using various digital television business.
Description of drawings
Fig. 1 is the digital TV integrated machine schematic diagram that the embodiment of the invention provides;
Fig. 2 is embodiment of the invention flow chart.
Embodiment
Technical scheme provided by the invention is: in the searching channels of all-in-one digital television process, system is at an effective frequency of locking and after exporting TS stream, just in current TS stream, search the data of specific transactions such as EPG, data broadcasting, software upgrading, in case after finding certain professional corresponding data, just this frequency is saved in the memory as this professional dominant frequency point.After searching platform and finishing, when the user need use certain professional, the dominant frequency point parameter of this business correspondence was searched by system from memory, lock onto this frequency then and obtain needed related data, thereby the assurance user normally uses this business in mode efficiently.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
In the Cable Network network, operator can be in the EPG information of all programs of physical channel broadcasting current network, the frequency of this physical channel then is called EPG dominant frequency point, and digital TV integrated machine just can obtain the EPG information of all programs in the present networks on this frequency.In like manner, other business information also has each self-corresponding dominant frequency point, as with data broadcast message frequency points corresponding be data broadcasting dominant frequency point, be used for broadcasting the information of data broadcasting, with each logical channel title frequency points corresponding in the network be channel designation dominant frequency point, be used for the title of whole each logical channel of network of broadcasting etc.
The schematic diagram of the digital TV integrated machine that the embodiment of the invention provides comprises MCU (microcontroller), remote control receiver module, memory and tuning and demultiplexing module as shown in Figure 1.
Wherein, the remote control receiver module is connected with MCU, be used for receiving the remote signal that the user sends by remote controller, in the embodiment of the invention, the user can call by remote controller and search platform menu startup program search, and start above-mentioned related service, as EPG, data broadcast service and software upgrading business etc.
MCU links to each other with memory, be used for the remote signal that the remote control receiver module receives is resolved, and control the operation of each correlation function module according to analysis result, specifically, when the platform flow process is searched in the digital TV integrated machine execution, the physical channel table that is used for from be kept at memory reads each frequency, and be set to tuning it and demultiplexing module, and be used for tuning with a demultiplexing module effective frequency of locking and after exporting TS stream, in TS stream, search the data of miscellaneous service correspondence, after finding certain professional corresponding data, judge whether current effective frequency is this professional dominant frequency point, if current effective frequency is stored in the memory as this professional dominant frequency point; After searching platform and finishing, if the user starts a certain business by remote controller, MCU also is used for by the parsing to remote signal, and the dominant frequency point that calls this business correspondence from memory is input to tuning and demultiplexing module.
Specifically, MCU comprise successively connect search platform frequency point setting module, dominant frequency point judge module and dominant frequency point parameter output module, search the physical channel table that platform frequency point setting module is used for from be kept at memory and read each frequency, and be set to tuning it and demultiplexing module; Dominant frequency point judge module is used for searching the corresponding data of miscellaneous service from tuning TS with the demultiplexing module transmission flows, and judges whether current effective frequency is certain professional corresponding dominant frequency point; Dominant frequency point output module is used for that dominant frequency is put parameter and outputs to memory stores.
Tuningly link to each other with MCU with demultiplexing module, be used for received television signal and to MCU output TS stream.
Memory links to each other with MCU, be used for storing miscellaneous service dominant frequency point parameter and with the corresponding relation of miscellaneous service; In the embodiment of the invention, memory adopts NVRAM (non-changeability RAM).
During the specific implementation technical solution of the present invention, digital TV integrated machine is in searching the platform process, and MCU can determine that current effective frequency is certain professional dominant frequency point according to each business features.If having broadcasting table identification number (being also referred to as Table ID, down together) during the TS of a frequency correspondence flows simultaneously is 0x4E, 0x4f, 0x50～0x5f, the EIT of 0x60～0x6f (Event Information Table), then this frequency is EPG dominant frequency point; If having broadcasting table identification number Table ID in the data of a frequency correspondence simultaneously is 0x42, the SDT of 0x46 (SDT Service Description Table), then this frequency is channel designation dominant frequency point; If it is the SDT (SDT Service Description Table) of 0x42 that there is broadcasting table identification number Table ID in the data of a frequency correspondence, and the type of service among the service_descriptor () (traffic descriptor) in this table is the broadcasting of 0x0c data, and then this frequency is data broadcasting dominant frequency point.
Embodiment of the invention flow chart specifically comprises following step as shown in Figure 2:
1, the user starts program search, and the physical channel table of system from be kept at NVRAM reads a frequency, and is set to tuning it and demultiplexing module, receives TS stream by demultiplexing behind signal stabilization;
2, searching the EIT table in TS stream, is 0x4E if can find Table ID, 0x4f, and 0x50～0x5f, the EIT table of 0x60～0x6f is then thought this frequency for EPG dominant frequency point and is saved in NVRAM, forwards step 3 then to; Otherwise directly forward step 3 to;
3, in TS stream, search the SDT table, if can find the SDT table that Table ID is 0x42 and 0x46, think that then this frequency is logical channel title dominant frequency point and is saved in NVRAM, forwards step 4 then to; Otherwise directly forward step 4 to;
4, in TS stream, search the SDT table, if can find Table ID and be the SDT table of 0x42, and this table comprises service_descriptor () descriptor, include type of service in this descriptor and be the program of 0x0c data broadcasting, think that then this frequency is data broadcasting dominant frequency point and is saved in NVRAM, forwards step 5 then to; Otherwise directly forward step 5 to;
If the frequency in the 5 physical channel tables all was used, then to search platform and finish, otherwise read the search procedure of next frequency repeating step 1 to 4, frequencies all in the physical channel table are all finished using.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. digital television integrated machine dominant frequency point identification method, described method comprises:
The platform flow process is searched in a, execution, locks an effective frequency, receives TS stream;
B, from the TS that receives stream, search the data of digital television business correspondence, if after finding certain professional corresponding data, with described frequency as this professional dominant frequency point storage, commentaries on classics step c, otherwise directly change step c;
C, search platform and finish? if, process ends, otherwise the next effectively frequency of locking receives TS stream, changes step b;
Wherein step b specifically comprises:
B1, in described TS stream, search the EIT table, if find the EIT table that Table ID is 0x4E, 0x4f, 0x50～0x5f and 0x60～0x6f, then store described frequency into memory as the dominant frequency point of EPG business, change step b2; Otherwise directly forward step b2 to;
B2, in described TS stream, search the SDT table, if can find the SDT table that Table ID is 0x42 and 0x46, then store described frequency into memory as logical channel title dominant frequency point, change step b3; Otherwise directly forward step b3 to;
B3, in described TS stream, search the SDT table, if can find Table ID and be the SDT table of 0x42, and this table comprises service_descriptor () descriptor, include type of service in the described descriptor and be the program of 0x0c data broadcasting, then store described frequency into memory as data broadcasting dominant frequency point, forward step c then to; Otherwise directly forward step c to.
2. method according to claim 1 is characterized in that, wherein step a specifically comprises:
A1, from the physical channel table, read a frequency, and be set to tuning it and demultiplexing module, behind signal stabilization, receive TS stream by demultiplexing.
3. method according to claim 1 is characterized in that, wherein also comprises after the step c:
D, start certain digital television business, this business frequency points corresponding that reads storage writes tuning and demultiplexing module.
4. method according to claim 1 is characterized in that, described business is EPG business or logical channel name service or data broadcast service.
5. digital TV integrated machine, described digital TV integrated machine comprises MCU, memory and tuning and demultiplexing module, wherein:
Describedly tuningly be used for receiving the TV signal that each frequency is corresponding in the physics channel table with demultiplexing module, and output TS flows to described MCU;
Described MCU is used for searching the data of digital television business correspondence from described TS stream, and is used for after finding certain professional corresponding data described frequency being stored in the described memory as this professional dominant frequency point;
Described memory be used for storing miscellaneous service dominant frequency point and with the corresponding relation of miscellaneous service;
Wherein, described MCU comprise successively connect search platform frequency point setting module, dominant frequency point judge module and dominant frequency point parameter output module; Described frequency point setting module is used for judging that when described judge module it is 0x4E that there is Table ID in described TS stream, 0x4f, when the EIT of 0x50～0x5f and 0x60～0x6f shows, be the dominant frequency point of EPG business with described frequency point setting, when judge module is judged when existing Table ID to be the SDT table of 0x42 and 0x46 in the described TS stream, be logical channel title dominant frequency point with described frequency point setting, when judge module judges that having Table ID in the described TS stream is the SDT table of 0x42, and this table comprises service_descriptor () descriptor, when including type of service for the program of 0x0c data broadcasting in the described descriptor, be data broadcasting dominant frequency point with described frequency point setting; Described dominant frequency point output module is used for that dominant frequency is put parameter and outputs to described memory stores.
6. digital TV integrated machine according to claim 5, it is characterized in that, it also comprises the control signal receiver module that links to each other with MCU, described control signal receiver module is used for receiving the control signal that starts program search, described control signal is transferred to described MCU, described MCU also is used for according to the parsing of described control signal is written to described tuning and demultiplexing module with each frequency in the described physical channel table, controls describedly tuningly to search platform with demultiplexing module.
7. digital TV integrated machine according to claim 6, it is characterized in that, described control signal receiver module is used for receiving the control signal that starts described business, described control signal is transferred to described MCU, described MCU also is used for according to the parsing of described control signal is read described professional corresponding dominant frequency point from described memory described dominant frequency point being written to described tuning and demultiplexing module.
8. digital TV integrated machine according to claim 5 is characterized in that, described business is EPG business or logical channel name service or data broadcast service.
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| CN102025940A (en) * | 2010-12-22 | 2011-04-20 | 深圳Tcl新技术有限公司 | Method for searching channel of digital television |
| CN104202665A (en) * | 2014-09-03 | 2014-12-10 | 四川金网通电子科技有限公司 | Method for automatically modifying central frequency point of set top box |
| CN105721926A (en) * | 2016-03-01 | 2016-06-29 | 青岛海信电器股份有限公司 | EPG information acquisition method and apparatus |
| CN115334339B (en) * | 2022-08-10 | 2024-03-12 | 海宁奕斯伟集成电路设计有限公司 | Program reservation conflict processing device and method |
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| CN101175204A (en) * | 2007-11-21 | 2008-05-07 | 中兴通讯股份有限公司 | Method for searching electric program menu in digital television system |
| CN101212546A (en) * | 2006-12-26 | 2008-07-02 | 深圳市同洲电子股份有限公司 | Set-top box application data retrieving method and device |
| CN101340527A (en) * | 2008-08-15 | 2009-01-07 | 北京创毅视讯科技有限公司 | Signal driving method and apparatus of digital television receiving device |
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| KR100406985B1 (en) * | 2001-08-11 | 2003-11-28 | 삼성전자주식회사 | Television displaying a searched channel during auto search, and a method for displaying searched channel of the same |
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| CN101212546A (en) * | 2006-12-26 | 2008-07-02 | 深圳市同洲电子股份有限公司 | Set-top box application data retrieving method and device |
| CN101175204A (en) * | 2007-11-21 | 2008-05-07 | 中兴通讯股份有限公司 | Method for searching electric program menu in digital television system |
| CN101340527A (en) * | 2008-08-15 | 2009-01-07 | 北京创毅视讯科技有限公司 | Signal driving method and apparatus of digital television receiving device |
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