CN102014253B - Channel searching method and device and television set - Google Patents
Channel searching method and device and television set Download PDFInfo
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- CN102014253B CN102014253B CN201010557104A CN201010557104A CN102014253B CN 102014253 B CN102014253 B CN 102014253B CN 201010557104 A CN201010557104 A CN 201010557104A CN 201010557104 A CN201010557104 A CN 201010557104A CN 102014253 B CN102014253 B CN 102014253B
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Abstract
The invention is applied to the technical field of televisions, and provides a channel searching method, a channel searching device and a television set. The method comprises the following steps of: receiving an input instruction and setting an automatic searching mode; searching channel information from a channel 1 according to a wired Cable mode and judging the type of a signal line currently connected with the television set when a channel 13 is searched; if the signal line currently connected with the television set is a Cable line, continuously searching the channel information according to the Cable mode; and if the signal line currently connected with the television set is not the Cable line, continuously searching the channel information according to an Air mode. In the invention, the type of the connected signal line can be automatically judged by the television set, a searching mode which is matched with the type of the signal line is selected to search the channel information, the problem of manually identifying the type of the signal line is solved, convenience is brought to a user, and the comfort for the use of the television set is improved.
Description
Technical field
The invention belongs to TV technology, relate in particular to a kind of method, device and television set of searching platform.
Background technology
In area such as north and south U.S.A, Taiwan, Japan (below be called for short the NTSC zone); Anolog TV signals roughly are divided into two kinds of wired Cable and antenna Air; The Cable signal is through cable transmission, and the Air signal is to receive through exterior aerial, receives television set by holding wire then.Cable comprises 125 channels (1～125), and Air comprises 68 channels (2～69).Propagate different TV program informations in above-mentioned two kinds of signals, therefore the family the user generally has two signal line, a transmission Cable signal, a transmission Air signal.When the user need watch the Cable signal, need the holding wire of Cable be connected with television set, in the menu of television set, select the Cable pattern then, carry out the channel information search; When the user need watch the Air signal, need the holding wire of Air be connected with television set, in the menu of television set, select the Air pattern then, carry out the channel information search.If the type of pattern that is provided with in the TV menu and holding wire is not corresponding, then search for less than correct programme information.
Yet; Two barss in the users home (Cable and Air) line has no difference in appearance basically, when the user when wherein holding wire and television set connect, if do not know signal type; When just might search for program, search is less than the programme information that transmits in the holding wire.Bring a lot of inconveniences to the user.
Summary of the invention
The object of the present invention is to provide a kind of method of searching platform, be intended to solve the problem that existing television set can not be searched platform automatically according to the type of holding wire.
The present invention is achieved in that a kind of method of searching platform, and said method comprises the steps:
Receive the instruction of input, search pattern is set for automatic;
From channel 1 beginning channel searching information, when searching channel 13, judge the type of the holding wire that current television set connects according to wired Cable pattern;
If the holding wire that current television set connects is the Cable line, then continues according to Cable pattern search channel information, otherwise continue channel searching information according to antenna Air pattern;
The step of the type of the holding wire that the current television set of said judgement connects is specially:
The frequency offset that has searched in statistics channel 1 to the channel 13 is greater than the channel quantity of 0.5MHz;
If the frequency offset that has searched in channel 1 to the channel 13 is greater than or equal to 3 greater than the channel quantity of 0.5MHz, then the holding wire of current connection is the Cable line;
Otherwise, continue channel searching information, be channel 22 until the current channel that will search for, the quantity of the channel that has searched in statistics channel 14 to the channel 22;
If the quantity of the channel that has searched in channel 14 to the channel 22 is greater than or equal to 3,, otherwise be the Air line then for the holding wire of current connection is the Cable line.
Another object of the present invention is to provide a kind of device of searching platform, said device comprises:
Search pattern is provided with module, is used to receive the instruction of input, search pattern is set for automatic;
Type judging module is used for beginning channel searching information according to wired Cable pattern from channel 1, when searching channel 13, judges the type of the holding wire that current television set connects;
Searching the platform module, is the Cable line if be used for the holding wire of current television set connection, then continues according to Cable pattern search channel information, otherwise continues channel searching information according to antenna Air pattern;
Said type judging module comprises:
Search the platform unit, be used for according to the Cable pattern from channel 1 beginning channel searching information;
The first channel statistics unit, be used for when the said platform unit searches of searching when the channel 13, the frequency offset that has searched in statistics channel 1 to the channel 13 is greater than the channel quantity of 0.5MHz;
First kind judging unit is greater than or equal to 3 if be used for frequency offset that channel 1 to the channel 13 of said first channel statistics unit statistics searched greater than the channel quantity of 0.5MHz, and then the holding wire of current connection is the Cable line;
The second channel statistics unit if the channel quantity that is used for said first channel statistics unit statistics then continues channel searching information less than 3, is a channel 22 until the current channel that will search for, the channel quantity that has searched in statistics channel 14 to the channel 22;
The second type judging unit, if the channel quantity that channel 14 to the channel 22 that is used for adding up the said second channel statistics unit has searched perhaps equals greater than 3, then the holding wire of current connection is the Cable line, otherwise is the Air line.
Another object of the present invention is to provide a kind of television set, said television set comprises the aforesaid device of searching platform.
In the present invention, the user when the Auto pattern search channel, television set at first according to the Cable pattern from channel 1 channel searching information; When searching channel 13; Automatically judge the type of the holding wire of current connection, select the search pattern channel searching information that is complementary with the holding wire type then, removed the trouble of artificial discernible signal line type from; Convenient for users to use, improved the comfort that television set uses.
Description of drawings
Fig. 1 is the flow chart of the method for searching platform that provides of the embodiment of the invention;
Fig. 2 is according to the flow chart of Cable pattern from channel 1 beginning channel searching information among the step S102 that provides of the embodiment of the invention.
If the channel of current search is a channel 13 among the step S103 that Fig. 3 is the embodiment of the invention to be provided, the time, judge the flow chart of the type of the holding wire that current television set connects;
Fig. 4 is the structured flowchart of the device of searching platform that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.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 embodiments of the present invention, the user when the Auto pattern search channel, television set at first according to the Cable pattern from channel 1 channel searching information; When searching channel 13; Automatically judge the type of the holding wire of current connection, select the search pattern channel searching information that is complementary with the holding wire type then, removed the trouble of the artificial discernible signal line of user type from; Be with convenience for user's use, improved the comfort that television set uses.
At first introduce the frequency difference of the partial channel of Cable and Air signal, the present invention is the type of coming to judge automatically the holding wire that television set inserts according to the frequency difference of the partial channel of Cable and Air signal.The frequency meter of the partial channel of Cable and Air signal is as shown in table 1, in table, has only provided partial channel, and wherein, the Cable signal always has 125 channels, and the Air signal always has 68 channels.
Table 1
The Cable holding wire is subdivided into three kinds of STD (Standard), IRC (Incrementally Related Carriers), HRC (Harmonically Related Carriers), and three types difference is:
(1), HRC is with the difference of STD: 5, the frequency HRC of 6 channels manys 0.75MHz than STD, the few 1.25MHz of remaining channel frequency;
(2), IRC is with the difference of STD: 5, the frequency IRC of 6 channels manys 2.0MHz than STD, and the remaining channel frequency is identical;
Therefore, the type of judging the holding wire that television set connects is that Cable still is that the principle of Air is:
(1), then has at least in 1～13 channel more than the frequency shift (FS) 0.5MHz of frequency ratio STD of 3 channels if holding wire is HRC or the IRC among the Cable.
(2) if holding wire is the STD among the Cable, then just be difficult to judge through preceding 1～13 channel, at this time will judge 14～22 channels.Because the frequency range of 14～22 channels is 121.25～169.25MHz among the STD of Cable; And the frequency range of 14～22 channels of Air is 471.25～519.25MHz; Therefore; If with Cable pattern removal search channel information, at the channel that can search between 14～22 channels more than 3, the holding wire that then is connected with television set must be the Cable holding wire.
Fig. 1 is the flow chart of the method for searching platform that provides of the embodiment of the invention, and details are as follows:
In step S101, receive the instruction of input, it is automatic Auto that search pattern is set.
In the search pattern of TV menu, increase an options Auto; Auto is a coordination with Cable and Air; Can be between Auto-＞Cable-＞Air when the user selects search pattern Cyclic Selection; After search pattern is set is Auto, television set can be discerned the type of the holding wire of current connection automatically when searching platform, and according to the corresponding channel information of the type search of holding wire.
In step S102, begin channel searching information from channel 1 according to the Cable pattern.
Television set supposes that at first the holding wire of current connection is the Cable signal, and from the search of channel 1 beginning channel information, idiographic flow is as shown in Figure 2, and details are as follows:
In step S201, the channel information of channel searching 1.
In step S202, the centre frequency (being defined as Fc) of channel 1 is written in the tuner through bus, again at frequency (Fc-1.5) MHz to channel searching information between (Fc+2.5) MHz.
In step S203, judge whether to monitor row synchronously, when detecting row synchronously and AFC voltage when being median, execution in step S204, otherwise, execution in step S205.
Judge whether to monitor row synchronously,, then detect AFC voltage AFC again,, so just confirm that the channel information of this frequency exists if AFC is a median when detecting row when synchronous, execution in step S204, otherwise, execution in step S205.
In step S204, store the side-play amount of said frequency with respect to Fc.
In step S205, continue the next channel of search and store the side-play amount of the frequency of next channel, till the channel of current search is channel 13 with respect to Fc.
In step S103,, then judge the type of the holding wire that current television set connects if the channel of current search is a channel 13.
Idiographic flow is as shown in Figure 3, and details are as follows:
In step S301, judge the current channel that will search for, if the current channel that will search for (definition CH) is CH13, execution in step S302 then, otherwise continue execution in step S102.
In step S302, statistics has searched the quantity of frequency offset greater than the channel of 0.5MHz among CH1～CH13, if this quantity is greater than or equal to 3, and execution in step S303 then, otherwise execution in step S304.
In step S303, the holding wire of current connection is the Cable line.
In step S304, continue channel searching, be CH22 until the current channel that will search for.
In step S305, the quantity of the channel that statistics has searched among CH14～CH22, if this quantity is greater than or equal to 3, execution in step S303 then, otherwise execution in step S306.
In step S306, the holding wire of current connection is the Air line.
In step S104,, then continue according to Cable pattern search channel information if the holding wire that current television set connects is the Cable line.
If the holding wire that television set connects is the Cable line, continue so according to Cable pattern search channel information, finish until having searched for channel 125 backs.
In step S105,, then continue channel searching information according to the Air pattern if the holding wire that current television set connects is the Air line.
If the holding wire that current television set connects is the Air line; Then television set before through the Cable pattern search to the channel information of channel 2 to channel 13 duplicate and store in the channel information of Air pattern; And continue the channel searching information from channel 14 according to the Air pattern, until search for channel 68 end afterwards.
The structure chart of the device of searching platform that Fig. 4 provides for the embodiment of the invention for the ease of explanation, only shows the relevant part of the embodiment of the invention.Wherein, this device of searching platform can be the software unit that is built in television set, the unit that hardware cell or soft or hard combine.In the present embodiment, this device comprises that search pattern is provided with module 41, type judging module 42 and searches platform module 43.
Search pattern is provided with the instruction that module 41 is used to receive input, and it is automatic Auto that search pattern is set.
Said type judging module 42 comprises searches platform unit 421, the first channel statistics unit 422, first kind judging unit 423, the second channel statistics unit 424 and the second type judging unit 425.
Searching platform unit 421 is used for according to the Cable pattern from channel 1 beginning channel searching information; This is searched platform unit 421 and comprises the side-play amount storing sub-units, and the frequency that this subelement is used for when channel searching information, storing each channel is with respect to the side-play amount of the centre frequency of channel 1;
The first channel statistics unit 422 is used for when said when searching platform unit 421 and searching channel 13, and the frequency offset that has searched in statistics channel 1 to the channel 13 is greater than the channel quantity of 0.5MHz;
Be greater than or equal to 3 if first kind judging unit 423 is used for the channel quantity of the said first channel statistics unit 422 statistics, then the holding wire of current connection is the Cable line;
If the second channel statistics unit 424 is used for the channel quantity of the said first channel statistics unit 422 statistics less than 3; Then continue channel searching information; Until the current channel that will search for is channel 22, the channel quantity that has searched in statistics channel 14 to the channel 22;
Be greater than or equal to 3 if the second type judging unit 425 is used for the channel quantity of the said second channel statistics unit 424 statistics, then the holding wire of current connection is the Cable line, otherwise is the Air line.
To be used for the holding wire that current television set connects be the Cable line if search platform module 43, then continues according to Cable pattern search channel information, otherwise continue channel searching information according to the Air pattern.In addition, when continuing channel searching information according to the Air pattern, the said platform module 43 of searching also comprises channel information copied cells 431 and searches platform unit 432.
Channel information copied cells 431 be used for through the Cable pattern search to the channel information of channel 2 to channel 13 duplicate and be stored to the channel information of Air pattern;
In embodiments of the present invention, the user when the Auto pattern search channel, television set at first according to the Cable pattern from channel 1 channel searching information; When searching channel 13; Automatically judge the type of the holding wire of current connection, select the search pattern channel searching information that is complementary with the holding wire type then, removed the trouble of artificial discernible signal line type from; Convenient for users to use, improved the comfort that television set uses.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method of searching platform is characterized in that, said method comprises the steps:
Receive the instruction of input, search pattern is set for automatic;
From channel 1 beginning channel searching information, when searching channel 13, judge the type of the holding wire that current television set connects according to wired Cable pattern;
If the holding wire that current television set connects is the Cable line, then continues according to Cable pattern search channel information, otherwise continue channel searching information according to antenna Air pattern;
The step of the type of the holding wire that the current television set of said judgement connects is specially:
The frequency offset that has searched in statistics channel 1 to the channel 13 is greater than the channel quantity of 0.5MHz;
If the frequency offset that has searched in channel 1 to the channel 13 is greater than or equal to 3 greater than the channel quantity of 0.5MHz, then the holding wire of current connection is the Cable line;
Otherwise, continue channel searching information, be channel 22 until the current channel that will search for, the quantity of the channel that has searched in statistics channel 14 to the channel 22;
If the quantity of the channel that has searched in channel 14 to the channel 22 is greater than or equal to 3,, otherwise be the Air line then for the holding wire of current connection is the Cable line.
2. the method for claim 1 is characterized in that, according to the Cable pattern during from channel 1 beginning channel searching information, said method also comprises the steps: said
The frequency of storing each channel is with respect to the side-play amount of the centre frequency of channel 1.
3. the method for claim 1 is characterized in that, said step according to antenna Air pattern continuation channel searching information is specially:
Will through the Cable pattern search to the channel information of channel 2 to channel 13 duplicate and be stored in the channel information of Air pattern;
Continue channel searching information according to the Air pattern from channel 14, until having searched for channel 68.
4. the method for claim 1 is characterized in that, in the instruction of said reception input, search pattern is set is before the automatic step, and said method also comprises the steps:
In the search pattern of TV menu, increase an options, said options is automatic.
5. a device of searching platform is characterized in that, said device comprises:
Search pattern is provided with module, is used to receive the instruction of input, search pattern is set for automatic;
Type judging module is used for beginning channel searching information according to wired Cable pattern from channel 1, when searching channel 13, judges the type of the holding wire that current television set connects;
Searching the platform module, is the Cable line if be used for the holding wire of current television set connection, then continues according to Cable pattern search channel information, otherwise continues channel searching information according to antenna Air pattern;
Said type judging module comprises:
Search the platform unit, be used for according to the Cable pattern from channel 1 beginning channel searching information;
The first channel statistics unit, be used for when the said platform unit searches of searching when the channel 13, the frequency offset that has searched in statistics channel 1 to the channel 13 is greater than the channel quantity of 0.5MHz;
First kind judging unit is greater than or equal to 3 if be used for frequency offset that channel 1 to the channel 13 of said first channel statistics unit statistics searched greater than the channel quantity of 0.5MHz, and then the holding wire of current connection is the Cable line;
The second channel statistics unit if the channel quantity that is used for said first channel statistics unit statistics then continues channel searching information less than 3, is a channel 22 until the current channel that will search for, the channel quantity that has searched in statistics channel 14 to the channel 22;
The second type judging unit, if the channel quantity that channel 14 to the channel 22 that is used for adding up the said second channel statistics unit has searched perhaps equals greater than 3, then the holding wire of current connection is the Cable line, otherwise is the Air line.
6. device as claimed in claim 5 is characterized in that, the said platform unit of searching comprises:
The side-play amount storing sub-units, the frequency that is used to store each channel is with respect to the side-play amount of the centre frequency of channel 1.
7. device as claimed in claim 5 is characterized in that, when continuing channel searching information according to antenna Air pattern, the said platform module of searching comprises:
The channel information copied cells, be used for through the Cable pattern search to the channel information of channel 2 to channel 13 duplicate and be stored to the channel information of Air pattern;
Search the platform unit, be used for continuing channel searching information from channel 14, until having searched for channel 68 according to the Air pattern.
8. a television set is characterized in that, said television set comprises each described device of searching platform of claim 5 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010557104A CN102014253B (en) | 2010-11-24 | 2010-11-24 | Channel searching method and device and television set |
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| CN201010557104A CN102014253B (en) | 2010-11-24 | 2010-11-24 | Channel searching method and device and television set |
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| CN102014253A CN102014253A (en) | 2011-04-13 |
| CN102014253B true CN102014253B (en) | 2012-09-26 |
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| CN103108145B (en) * | 2012-12-20 | 2016-09-21 | 深圳Tcl新技术有限公司 | Automatically the method and device of channel-identification table holding wire type |
| CN106658166B (en) * | 2016-12-13 | 2020-09-01 | 广州视源电子科技股份有限公司 | Television program channel searching method, switching method and system |
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| US7502587B2 (en) * | 2004-05-28 | 2009-03-10 | Echostar Technologies Corporation | Method and device for band translation |
| CN1905648A (en) * | 2005-07-29 | 2007-01-31 | 上海乐金广电电子有限公司 | Tuning method for digital television receiver |
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