CN101651792A - Digital television all-in-one machine and method for searching channels - Google Patents
Digital television all-in-one machine and method for searching channels Download PDFInfo
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- CN101651792A CN101651792A CN200810142432A CN200810142432A CN101651792A CN 101651792 A CN101651792 A CN 101651792A CN 200810142432 A CN200810142432 A CN 200810142432A CN 200810142432 A CN200810142432 A CN 200810142432A CN 101651792 A CN101651792 A CN 101651792A
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Abstract
The invention is suitable for the technical field of televisions and provides a digital television all-in-one machine and a method for searching channels. The digital television all-in-one machine comprises an MCU, a memory and a tuning and demultiplexing module, wherein the MCU is used for reading a NIT initial frequency corresponding to an area in the memory according to the area selected by a user to input the NIT initial frequency into the tuning and demultiplexing module, and setting the frequency of the tuning and demultiplexing module into the NIT initial frequency; the tuning and demultiplexing module is used for receiving a television signal corresponding to the NIT initial frequency input by the MCU, acquiring an NIT table from the received television signal and searching the channels according to frequency information in the NIT table; and the memory is used for storing a preset NIT initial frequency list.
Description
Technical field
The invention belongs to the digital television techniques field, relate in particular to digital TV integrated machine and quick channel search method thereof.
Background technology
Digital Television is promoted just throughout the country and can finally be substituted simulated television, but because history and national conditions, the digital-TV operator in each city, area does not enter this field under monolithic standard and regulation, PSI/SI (Program Specific Information/ServiceInformation in the digital television signal that various places send, program definition information/information on services) transmission form is incomplete same, comprises that the placement frequency of these information and organizational form also may be different.Even the different operator in same city send the PSI/SI of digital television signal also may be inconsistent.
Because the existing business model of digital TV integrated machine is similar with common panel TV, manufacturer tends to develop a product 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, and system upgrade frequently brings the uncertain of PSI/SI and channel setting.This situation has caused orienting towards the whole country the analogue digital integrated television in market in exploitation quick channel search, the rendition list very big difficulties of function existence such as renewals automatically, because product is sold to different cities, different regions, finish information on services that these functions will obtain deposit Frequency point and form is all had any different.
The platform mode of searching of existing Digital Television comprises two big classes: the full range point is searched platform and is utilized NIT (NetworkInformation Table, network information table) quick channel search.The former way is similar to simulated television, variation and the current state change stepping of decoder related data according to the line of frequently buckling progressively scan from the low frequency to the high frequency, this process generally can surpass 20 minutes, and owing to can't utilize NIT table, the function that does not have program to upgrade automatically; And the latter finds NIT earlier and extract Frequency List Descriptor (list of frequency descriptor) from NIT, utilize the list of frequency descriptor with frequency information, navigate to the Frequency point that each has signal fast, thereby finish quick channel search, but this 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 Frequency point at NIT place.
Therefore, be necessary to provide a kind of technical scheme, can realize digital TV integrated machine simple and fast search platform.
Summary of the invention
The method that the object of the present invention is to provide a kind of digital TV integrated machine and search platform is intended to solve the problem of digital TV integrated machine quick channel search.
The present invention is achieved in that a kind of digital TV integrated machine, and described digital TV integrated machine comprises MCU, memory and tuning and demultiplexing module, wherein:
The NIT initial frequency that described MCU is used for reading from described memory according to the zone that the user selects this zone correspondence is input to described tuning and demultiplexing module, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module;
Described tuning and demultiplexing module are used for receiving the corresponding TV signal of NIT initial frequency of described MCU input, and are used for obtaining from the TV signal that receives the NIT table, search platform according to the frequency information in the described NTI table;
Described memory is used for storing the NIT initial frequency tabulation of presetting.
Described digital TV integrated machine also comprises remote control receiver module and display module, described remote control receiver module is used for receiving the remote control command of calling NIT quick channel search of user by the remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and calls NIT quick channel search menu according to analysis result and shows on described display module.
Described remote control receiver module is used for receiving the remote control command of user by the selection zone of remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and the NIT initial frequency that reads the user-selected area correspondence according to analysis result from described memory is input to described tuning and demultiplexing module.
Described remote control receiver module is used for receiving the remote control command of user by the renewal NIT initial frequency of remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and upgrades the NIT initial frequency in the NIT initial frequency tabulation of storing in the described memory according to analysis result.
Described remote control receiver module is used for receiving the remote control command of user by the interpolation NIT initial frequency of remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and adds NIT initial frequency and corresponding zone thereof in the NIT initial frequency tabulation of storing in described memory according to analysis result.
The NIT table that described MCU also is used for obtaining is stored in the described memory, and described memory also is used for storing described NTI table.
The present invention also provides a kind of method of searching channels of all-in-one digital television, and described digital TV integrated machine comprises memory and tuning and demultiplexing module, and described method comprises the steps:
This zone correspondence is read in a, the zone of selecting according to the user from described memory NIT initial frequency is input to described tuning and demultiplexing module, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module;
B, the described tuning corresponding TV signal of importing with the demultiplexing module reception of NIT initial frequency, and from the TV signal that receives, obtain the NIT table, search platform according to the frequency information in the described NTI table.
Wherein also comprise before the step a:
A0, storage NIT initial frequency tabulation in described memory, described NIT initial frequency tabulation comprises the NIT initial frequency that each zone is corresponding.
Wherein step a specifically comprises:
A1, startup NIT quick channel search function are called NIT quick channel search menu and are shown;
This zone correspondence is read in a2, the zone of selecting by described NIT quick channel search menu according to the user from described memory NIT initial frequency is input to described tuning and demultiplexing module, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module.
Wherein step a2 also comprises:
Receiving the NIT initial frequency of user by described NIT quick channel search menu input, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module.
The present invention overcomes the deficiencies in the prior art, in digital TV integrated machine, preset the tabulation of NIT initial frequency, this NIT initial frequency tabulation comprises the NIT initial frequency of each zones of different, when the digital TV integrated machine user searches platform, can be by in menu, selecting self region, system obtains the NIT initial frequency that this digital TV integrated machine is suitable for according to the zone that the user selects from this initial frequency tabulation, then directly navigate to the appointment frequency, finish the quick channel search of Digital Television according to NIT.Technical scheme provided by the invention makes the Digital Television one can use the NIT table to navigate to effective channel fast, thereby realizes carrying out quick channel search, has reduced the time that the user waits for.
Description of drawings
Fig. 1 is the schematic diagram of the digital TV integrated machine that provides of the embodiment of the invention;
Fig. 2 is an embodiment of the invention flow chart;
Fig. 3 is that the user that the embodiment of the invention provides upgrades the flow chart that the NIT initial frequency is tabulated.
Embodiment
Technical scheme provided by the invention is: the characteristics at digital TV integrated machine preset the tabulation of NIT initial frequency in its system, this NIT initial frequency tabulation comprises the NIT initial frequency of each zones of different, when the digital TV integrated machine user searches platform, can be by in menu, selecting self region, system obtains the NIT initial frequency that this digital TV integrated machine is suitable for according to the zone that the user selects from this initial frequency tabulation, then directly navigate to the appointment frequency, finish the quick channel search of Digital Television according to NIT.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the digital TV integrated machine product development process, the research staff can obtain the NIT initial frequency in each main cities of the whole nation or area by modes such as field surveys, form the tabulation of NIT initial frequency, the cable television operators of own region are found in user by selecting province, city, area, just can obtain the NIT frequency parameter thus, as frequency etc., then this NIT initial frequency tabulation is preset in the system.In addition, user or after-sale service personnel can obtain the initial frequency of local NIT by local cable TV network operation business, thereby upgrade the NIT initial frequency table that presets.
During the specific implementation technical solution of the present invention, can design a NIT quick channel search menu, the user calls this menu option by main menu, starts NIT quick channel search flow process; Start after the NIT quick channel search function, the user can select the province corresponding with the television set present position, city and area by this menu, and can import new NIT initial frequency and corresponding zone thereof when upgrading the tabulation of NIT initial frequency.
The schematic diagram of the digital TV integrated machine that the embodiment of the invention provides comprises display module, MCU (microprocessor), 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 NIT quick channel search menu by remote controller and show on digital TV integrated machine, in menu, show selectable province, city and area, the user selects digital TV integrated machine place province, city and area by remote controller, determines the zone at digital TV integrated machine place;
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, handle as from memory, reading the tabulation of NIT initial frequency and being input to display module, the NIT initial frequency that reads this zone correspondence according to the zone of user's selection from memory is input to tuning and demultiplexing module, with tuning and frequency configuration demultiplexing module is this NIT initial frequency, and tuning NIT with the demultiplexing module transmission is transferred to memory stores;
Tuningly link to each other with MCU, be used for receiving the TV signal of the NIT initial frequency correspondence of MCU input, and from the TV signal that receives, obtain NIT,, then NIT is transferred to MCU if can obtain effective NIT with demultiplexing module;
Display module is used for generating the demonstration of NIT quick channel search menu according to the NIT initial frequency table data of MCU transmission;
Memory links to each other with MCU, is used for storing the NIT initial frequency tabulation of presetting, and is used for the NIT table of store M CU transmission; In the embodiment of the invention, memory adopts NVRAM (non-changeability RAM).
Embodiment of the invention flow chart specifically comprises following step as shown in Figure 2:
1, the user selects province, city and the area at own place from NIT quick channel search menu, determines the zone at digital TV integrated machine place;
2, system from NVRAM, read determine the NIT initial frequency that the zone is corresponding, and it is set to tuner, behind signal stabilization, receive the NIT table by demultiplexing;
Does 3, whether the NIT table receive normal? if change step 4, otherwise change step 5;
4, preserve user-selected area information, and beginning is searched platform according to the correlated frequency information in the NIT table;
If it is undesired that 5 NIT table receives, show that frequency corresponding with this zone in the tabulation of NIT initial frequency is wrong, the user imports new NIT initial frequency by flow process as shown in Figure 3;
6, system is set to tuner with new NIT initial frequency, receives the NIT table by demultiplexing behind the signal stabilization, changes step 3.
For the zone and the corresponding NIT initial frequency thereof that do not comprise in the NIT initial frequency tabulation of presetting, perhaps because upgrade back and the inconsistent situation of NIT initial frequency that presets, user or after-sale service personnel can obtain the initial frequency of local NIT by local cable TV network operation business, thereby the NIT initial frequency table that renewal is preset, idiographic flow are as shown in Figure 3:
1, the user imports a new NIT initial frequency and corresponding zone thereof in the quick channel search menu;
2, system is the frequency setting of the tuner frequency for user's input, and receives the NIT table behind signal stabilization;
Does 3, whether the NIT table receive normal? if change step 4, otherwise change step 1;
4, this frequency of storage in NVRAM, and in the NIT choice menus, increase this area, search platform according to the correlated frequency information in the NIT table then.
When system started shooting for the first time, system can point out the user to select the city or the area at place from the tabulation of presetting, if do not have suitable city or area, then the user can select directly to enter flow process shown in Figure 4.This way can be shown initial frequency so that all-in-one obtains NIT fast, avoids all-channel scanning to obtain the NIT table, thereby realizes the quick channel search of digital TV integrated machine.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done 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 (10)
1, a kind of digital TV integrated machine is characterized in that, described digital TV integrated machine comprises MCU, memory and tuning and demultiplexing module, wherein:
The NIT initial frequency that described MCU is used for reading from described memory according to the zone that the user selects this zone correspondence is input to described tuning and demultiplexing module, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module;
Described tuning and demultiplexing module are used for receiving the corresponding TV signal of NIT initial frequency of described MCU input, and are used for obtaining from the TV signal that receives the NIT table, search platform according to the frequency information in the described NTI table;
Described memory is used for storing the NIT initial frequency tabulation of presetting.
2, digital TV integrated machine according to claim 1, it is characterized in that, described digital TV integrated machine also comprises remote control receiver module and display module, described remote control receiver module is used for receiving the remote control command of calling NIT quick channel search of user by the remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and calls NIT quick channel search menu according to analysis result and shows on described display module.
3, digital TV integrated machine according to claim 2, it is characterized in that, described remote control receiver module is used for receiving the remote control command of user by the selection zone of remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and the NIT initial frequency that reads the user-selected area correspondence according to analysis result from described memory is input to described tuning and demultiplexing module.
4, digital TV integrated machine according to claim 2, it is characterized in that, described remote control receiver module is used for receiving the remote control command of user by the renewal NIT initial frequency of remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and upgrades the NIT initial frequency in the NIT initial frequency tabulation of storing in the described memory according to analysis result.
5, digital TV integrated machine according to claim 2, it is characterized in that, described remote control receiver module is used for receiving the remote control command of user by the interpolation NIT initial frequency of remote controller input, described MCU is used for the remote control command of described remote control receiver module transmission is resolved, and adds NIT initial frequency and corresponding zone thereof in the NIT initial frequency tabulation of storing in described memory according to analysis result.
6, digital TV integrated machine according to claim 1 is characterized in that, the NIT table that described MCU also is used for obtaining is stored in the described memory, and described memory also is used for storing described NTI table.
7, a kind of method of searching channels of all-in-one digital television, described digital TV integrated machine comprise memory and tuning and demultiplexing module, and described method comprises the steps:
This zone correspondence is read in a, the zone of selecting according to the user from described memory NIT initial frequency is input to described tuning and demultiplexing module, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module;
B, the described tuning corresponding TV signal of importing with the demultiplexing module reception of NIT initial frequency, and from the TV signal that receives, obtain the NIT table, search platform according to the frequency information in the described NTI table.
8, method according to claim 7 is characterized in that, wherein also comprises before the step a:
A0, storage NIT initial frequency tabulation in described memory, described NIT initial frequency tabulation comprises the NIT initial frequency that each zone is corresponding.
9, method according to claim 7 is characterized in that, wherein step a specifically comprises:
A1, startup NIT quick channel search function are called NIT quick channel search menu and are shown;
This zone correspondence is read in a2, the zone of selecting by described NIT quick channel search menu according to the user from described memory NIT initial frequency is input to described tuning and demultiplexing module, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module.
10, method according to claim 9 is characterized in that, wherein step a2 also comprises:
Receiving the NIT initial frequency of user by described NIT quick channel search menu input, is this NIT initial frequency with described tuning and frequency configuration demultiplexing module.
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| CN200810142432A CN101651792B (en) | 2008-08-13 | 2008-08-13 | Digital television all-in-one machine and method for searching channels |
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| CN200810142432A CN101651792B (en) | 2008-08-13 | 2008-08-13 | Digital television all-in-one machine and method for searching channels |
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| CN101651792B CN101651792B (en) | 2012-10-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102055930A (en) * | 2010-12-09 | 2011-05-11 | 深圳Tcl新技术有限公司 | Multi-signal simultaneous searching device and method |
| CN102378068A (en) * | 2010-08-13 | 2012-03-14 | 深圳Tcl新技术有限公司 | Digital network television system and method for acquiring network parameters by using same |
| CN102780922A (en) * | 2012-07-03 | 2012-11-14 | 深圳Tcl新技术有限公司 | Digital television channel searching method and channel searching system |
| CN105812689A (en) * | 2014-12-29 | 2016-07-27 | 深圳Tcl数字技术有限公司 | Method and device for satellite television channel searching |
| CN106791989A (en) * | 2016-12-19 | 2017-05-31 | 广州视源电子科技股份有限公司 | The method and apparatus that TV data is automatically updated |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1897665A (en) * | 2005-07-13 | 2007-01-17 | 上海凡捷电子科技有限公司 | TV-set and its frequency-channel searching method |
| CN1956520A (en) * | 2005-10-26 | 2007-05-02 | 深圳Tcl新技术有限公司 | Method for seaching TV program band |
| CN101212607B (en) * | 2006-12-31 | 2011-08-10 | 康佳集团股份有限公司 | Automatic channel search method for TV set |
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2008
- 2008-08-13 CN CN200810142432A patent/CN101651792B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378068A (en) * | 2010-08-13 | 2012-03-14 | 深圳Tcl新技术有限公司 | Digital network television system and method for acquiring network parameters by using same |
| CN102055930A (en) * | 2010-12-09 | 2011-05-11 | 深圳Tcl新技术有限公司 | Multi-signal simultaneous searching device and method |
| CN102780922A (en) * | 2012-07-03 | 2012-11-14 | 深圳Tcl新技术有限公司 | Digital television channel searching method and channel searching system |
| CN102780922B (en) * | 2012-07-03 | 2016-05-04 | 深圳Tcl新技术有限公司 | DTV channel search method and channel searching system |
| CN105812689A (en) * | 2014-12-29 | 2016-07-27 | 深圳Tcl数字技术有限公司 | Method and device for satellite television channel searching |
| CN105812689B (en) * | 2014-12-29 | 2019-06-21 | 深圳Tcl数字技术有限公司 | The method and apparatus of satellite television tuning |
| CN106791989A (en) * | 2016-12-19 | 2017-05-31 | 广州视源电子科技股份有限公司 | The method and apparatus that TV data is automatically updated |
| CN106791989B (en) * | 2016-12-19 | 2019-09-24 | 广州视源电子科技股份有限公司 | The method and apparatus that TV data automatically updates |
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| CN101651792B (en) | 2012-10-17 |
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Granted publication date: 20121017 Termination date: 20200813 |