CN101179684B - Channel searching method capable of identifying automatically color standard and voice standard - Google Patents
Channel searching method capable of identifying automatically color standard and voice standard Download PDFInfo
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- CN101179684B CN101179684B CN2006100700377A CN200610070037A CN101179684B CN 101179684 B CN101179684 B CN 101179684B CN 2006100700377 A CN2006100700377 A CN 2006100700377A CN 200610070037 A CN200610070037 A CN 200610070037A CN 101179684 B CN101179684 B CN 101179684B
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Abstract
The invention provides a channel searching method for automatically identifying color system and sound system. The technical proposal adopts a default sound system firstly and conducts the following operation: A. an existed channel is confirmed; B. a program of automatically identifying color and sound is started up; C. the sound system is identified first and is determined as DK, BG, I or M, an output system of high frequency sound is set as an identified system, and then the color system is identified; D. a frequency point, the color system and the sound system are saved; E. the system of high frequency sound is reset as the default system as DK and the channel number is increased by 1; F. the operation from B to F is repeated; and G. when the frequency value exceeds 870 M Hertz, the channel searching is finished. The invention automatically identifies and saves the TV color system and sound system during channel reaching so as to realize the automatic identification of color systemand sound system by the TV.
Description
Technical field
The present invention is the channel search method of a kind of automatic identification S-SYSTEM and sound standard.
Background technology
The TV signal S-SYSTEM is divided into PAL, SECAM, NTSC etc., the sound standard is divided into DK, BG, I, L/L ', M etc., to influence that the image of TV is normal to be shown and sound is normally exported if TV signal S-SYSTEM and sound standard are provided with mistake in television set, the S-SYSTEM and the sound standard of country variant and area employing are not quite similar at present, do not knowing that TV makes under the situation of land used like this, S-SYSTEM and sound standard adopt two kinds of methods in TV: 1, user's forced action type, 2, discern automatically when changing platform.First kind of mode needs user's manual switchover, run into the user who does not understand TV and can not know how to select, when particularly there is several standard some countries and regions, the second way can make TV increase when changing platform when judging and ask, occur the erroneous judgement situation sometimes, and can't distinguish the platform that the sound standard is DK and L/L '.
Summary of the invention
Identification TV S-SYSTEM and sound standard and storage automatically realized the automatic identification of TV to S-SYSTEM and sound standard when platform was searched in utilization of the present invention.
Technical scheme of the present invention is carried out following operation at first adopting the default sound standard:
A, judge TV makes land used whether relate to France, Luxembourg, Switzerland, if, national choice menus at first is set, it is set to France, Luxembourg, Switzerland's option;
B, control tuner change from the low frequency to the high frequency successively, and detect line synchronizing signal, if line synchronizing signal is arranged, detect tuner AFC again, determine that this frequency is the platform of an existence;
C, startup colored identification and the automatic identification step of sound automatically;
D, first sound recognition standard are confirmed as DK or BG or I or M, the standard that tuner voice output standard is set to identify after identification; Discern S-SYSTEM again, through recognition and verification is the NTSC of PAL or SECAM or 3.58M or the NTSC of 4.43M, if S-SYSTEM is SECAM, and the sound standard is DK, judge again whether the user selects France, Luxembourg, Switzerland in the national choice menus, assert that the sound standard is L if then force;
E, storing frequencies point, S-SYSTEM, sound standard;
F, tuner sound standard is re-set as the acquiescence standard, platform number adds 1;
The operation of G, repetition B to F;
When I, frequency values have been expired above the platform number of 870M hertz or storage, search platform and finish.
When not having the sound standard to be the area of platform of L or L ' such as non-France, Luxembourg, Switzerland national, such scheme of the present invention can directly discern each sound standard and S-SYSTEM automatically in TV signal, and can store the platform that identifies, thereby reduce the trouble brought in use to the user because of the method for channel selection that S-SYSTEM and sound standard can't correctly be set automatically greatly, and guarantee the accuracy of channel selection.
Owing in the French TV signal SECAM L/L ' signal is arranged, its surrounding countries such as Luxembourg, Switzerland also can search out the platform of the SECAM L/L ' of France's emission, and sound standard DK and L, L ' can't discern differentiation automatically, need specify by the user, national choice menus of such scheme design, when the user is set to France, Luxembourg, Switzerland, needs identification L, L ', otherwise need not discern L, L '.
Owing in the French TV signal SECAM L/L ' signal is arranged, its identification is comparatively special, therefore, if TV make land used be France, Luxembourg, Switzerland the time, then before said procedure begins, must once be provided with by force national choice menus by the user, it is made as France, Luxembourg or Switzerland, can clearly whether need to judge L, L ' like this.
Because the sound standard is the platform of L/L ' when being set as other standards, its synchronizing signal can be disorderly, so not necessarily in above-mentioned steps, all find, be the TV signal that guarantees that comprehensive search can receive, after the TV signal of having searched for non-L and L ', should search for the signal of L and L ', its concrete steps are as follows again:
In step 1, before frequency values surpasses 870 hertz, searches platform and finish, judge country selects the user whether to elect France, Luxembourg, Switzerland as, if then continue following step:
A ', earlier tuner sound standard is set, when frequency values during less than the 100M hertz tuner sound standard be set to L ', otherwise be made as L; The control tuner changes from the low frequency to the high frequency successively, and detects line synchronizing signal; If line synchronizing signal is arranged, detect tuner AFC again, determine that this frequency is the platform of an existence;
B ', startup colored identification and the automatic identification step of sound automatically;
C ', elder generation start the automatic identification step of sound, if judge that the sound standard is BG or I or M, this that then abandon searching out enters D '; Perhaps
Start the automatic identification step of sound earlier, if judge that the sound standard is L, then start colored identification automatically, if S-SYSTEM is the NTSC of PAL or 3.58M or the NTSC of 4.43M, the sound recognition standard, after identification, confirm as DK or BG or I or M, the standard that tuner voice output standard is set to identify; Discern S-SYSTEM again, confirm as the NTSC of PAL or SECAM or 3.58M or the NTSC of 4.43M through judgement;
D ', repeating step A ', B ', C ';
E ', when frequency values surpasses the 870M hertz, the information of the platform that searches out is sorted from small to large by frequency values, search platform and finish.
In above-mentioned C ' step, if S-SYSTEM is identified as SECAM, the frequency values of storage before then searching, if and the frequency values difference of this platform that searches is in 1M up and down, then think same, and the position that current frequency values, S-SYSTEM, sound standard are deposited the platform of former storage, when the foreground number constant; Otherwise deposit the position when the foreground, then, when the foreground number adds 1, can reduce repeated storage like this, repeating step A ', B ', C ' and this step are when frequency values surpasses 870 hertz, the information of the platform that searched out is sorted one time from small to large by frequency values, search platform and finish.
Advantage of the present invention is: can discern S-SYSTEM and sound standard automatically when searching platform, also can fine compatibility for the platform of state SECAM L/L ' such as France, and do not have repetition platform, sequence consensus.This method can adapt to all over the world, solves the different channel search method problems of different regions TV.
Embodiment
Embodiment one
Present embodiment specifically to search the platform step as follows:
1, national choice menus is set, is set to France, Luxembourg, Switzerland, the user selects once before searching platform;
2, tuner sound standard is set to give tacit consent to standard, as DK;
3, the control tuner is changed to high frequency by low frequency successively from 43M, and detects line synchronizing signal, if line synchronizing signal is arranged, detects tuner AFC (AFC voltage value) again, if be median, determines that this frequency is the platform of an existence;
4, start colored identification and sound automatic identification procedure automatically, and wait for 50 to 200 milliseconds, make tuner output stable, prevent erroneous judgement;
5, first sound recognition standard is judged as BG or I or M, and the standard that tuner voice output standard is set to identify is waited for 50 to 200 milliseconds, makes the image color decoding stable; Discern S-SYSTEM again, if be judged as PAL or SECAM or NTSC (3.58M) or NTSC (4.43M), the sound standard is constant;
Perhaps, first sound recognition standard is judged as DK, and the standard that tuner voice output standard is set to identify is waited for 50 to 200 milliseconds, makes the image color decoding stable; Discern S-SYSTEM again, if be judged as PAL or NTSC (3.58M) or NTSC (4.43M), the sound standard is constant;
Perhaps first sound recognition standard is judged as DK, and the standard that tuner voice output standard is set to identify is waited for 50 to 200 milliseconds, makes the image color decoding stable; Discern S-SYSTEM again, if be judged as SECAM, if country is chosen as France, Luxembourg, Switzerland, then the sound standard is forced to L;
6, storing frequencies point, S-SYSTEM, sound standard;
7, tuner sound standard is re-set as DK, platform number adds 1;
8, the operation of repetition 2 to 7;
When 9, frequency values surpasses the 870M hertz, judge country's selection
10, if judge that it is not France, Luxembourg, Switzerland that country is selected, and searches platform and finishes.
Embodiment three:
Present embodiment specifically to search the platform step as follows:
1, tuner sound standard is set to give tacit consent to standard, as DK;
2, the control tuner is changed to high frequency by low frequency successively from 43M, and detects line synchronizing signal, if line synchronizing signal is arranged, detects tuner AFC (AFC voltage value) again, if be median, determines that this frequency is the platform of an existence;
3, start colored identification and sound automatic identification procedure automatically, and wait for 50 to 200 milliseconds, make tuner output stable, prevent erroneous judgement;
4, first sound recognition standard is judged as DK or BG or I or M, and the standard that tuner voice output standard is set to identify is waited for 50 to 200 milliseconds again, makes the image color decoding stable; Discern S-SYSTEM again, if be judged as PAL or NTSC (3.58M) or NTSC (4.43M);
5, storing frequencies point, S-SYSTEM, sound standard;
6, tuner sound standard is re-set as DK, platform number adds 1;
7, the operation of repetition 1 to 6;
When 8, frequency values surpasses the 870M hertz, judge country's selection;
9, if judge that country is chosen as France, Luxembourg, Switzerland; Then control tuner and change successively to high frequency by low frequency, and detect line synchronizing signal from 43M; When frequency values during less than the 100M hertz tuner sound standard be set to L ', otherwise be made as L; If line synchronizing signal is arranged, detect tuner AFC (AFC voltage value) again, if be median, determine that this frequency is the platform of an existence;
10, start the sound automatic identification procedure;
11, if judge that the sound standard is BG or I or M, then abandon storing this that searches out, enter step 12;
12, repeating step 9 to 11;
13, when frequency values surpasses 870M, the information of the platform that searches out is sorted from small to large by frequency values, search platform and finish.
Embodiment four:
Present embodiment specifically to search the platform step as follows:
1, tuner sound standard is set to DK;
2, the control tuner is changed to high frequency by low frequency successively from 43M, and detects line synchronizing signal, if line synchronizing signal is arranged, detects tuner AFC (AFC voltage value) again, if be median, determines that this frequency is the platform of an existence;
3, start colored identification and sound automatic identification procedure automatically, and wait for 50 to 200 milliseconds, make tuner output stable, prevent erroneous judgement;
4, first sound recognition standard is judged as DK or BG or I or M, and the standard that tuner voice output standard is set to identify is waited for 50 to 200 milliseconds again, makes the image color decoding stable; Discern S-SYSTEM again, if be judged as PAL or SECAM or NTSC (3.58M) or NTSC (4.43M);
5, storing frequencies point, S-SYSTEM, sound standard;
6, tuner sound standard is re-set as DK, platform number adds 1;
7, the operation of repetition 1 to 6;
When 8, frequency values surpasses the 870M hertz, judge country's selection;
9, if judge that country is chosen as France, Luxembourg, Switzerland; Then control tuner and change successively to high frequency by low frequency, and detect line synchronizing signal from 43M; When frequency values during less than the 100M hertz tuner sound standard be set to L ', otherwise be made as L; If line synchronizing signal is arranged, detect tuner AFC (AFC voltage value) again, if be median, determine that this frequency is the platform of an existence;
10, start the sound automatic identification procedure;
11,, then start colored identification automatically if judge that the sound standard is L;
12, if S-SYSTEM is PAL or NTSC (3.58M) or NTSC (4.43M), then abandon storing this that searches out, enter step 13;
13, repeating step 9 to 12;
14, when frequency values surpasses 870M, the information of the platform that searches out is sorted from small to large by frequency values, search platform and finish.
Embodiment five:
Present embodiment specifically to search the platform step as follows:
1, tuner sound standard is set to DK;
2, the control tuner is changed to high frequency by low frequency successively from 43M, and detects line synchronizing signal, if line synchronizing signal is arranged, detects tuner AFC (AFC voltage value) again, if be median, determines that this frequency is the platform of an existence;
3, start colored identification and sound automatic identification procedure automatically, and wait for 50 to 200 milliseconds, make tuner output stable, prevent erroneous judgement;
4, first sound recognition standard is judged as DK or BG or I or M, and the standard that tuner voice output standard is set to identify is waited for 50 to 200 milliseconds again, makes the image color decoding stable; Discern S-SYSTEM again, if be judged as PAL or SECAM or NTSC (3.58M) or NTSC (4.43M);
5, storing frequencies point, S-SYSTEM, sound standard;
6, tuner sound standard is re-set as DK, platform number adds 1;
7, the operation of repetition 1 to 6;
When 8, frequency values surpasses the 870M hertz, judge country's selection;
9, if judge that country is chosen as France, Luxembourg, Switzerland; Then control tuner and change successively to high frequency by low frequency, and detect line synchronizing signal from 43M; When frequency values during less than the 100M hertz tuner sound standard be set to L ', otherwise be made as L; If line synchronizing signal is arranged, detect tuner AFC (AFC voltage value) again, if be median, determine that this frequency is the platform of an existence;
10, start the sound automatic identification procedure;
11,, then start colored identification automatically if judge that the sound standard is L;
12, if S-SYSTEM is identified as SECAM, the frequency values of the platform of storage before then searching, if and the frequency values difference of this platform that searches is in 1M up and down, then think same, and the position that current frequency values, S-SYSTEM, sound standard are deposited the platform of former storage, platform is number constant; Otherwise deposit the position when the foreground, platform number adds 1;
13, repeating step 9 to 12; 14, when frequency values surpasses 870M, the information of the platform that searches out is sorted from small to large by frequency values, search platform and finish.
Claims (3)
1. automatic channel search method of identification S-SYSTEM and sound standard, it is characterized in that: it may further comprise the steps:
A, judge TV makes land used whether relate to France, Luxembourg, Switzerland, if, national choice menus at first is set, it is set to France, Luxembourg, Switzerland's option;
B, control tuner change from the low frequency to the high frequency successively, and detect line synchronizing signal, if line synchronizing signal is arranged, detect tuner AFC again, determine that this frequency is the platform of an existence;
C, startup colored identification and the automatic identification step of sound automatically;
D, first sound recognition standard are confirmed as DK or BG or I or M, the standard that tuner voice output standard is set to identify after identification; Discerning S-SYSTEM again, is the NTSC of PAL or SECAM or 3.58M or the NTSC of 4.43M through recognition and verification; If S-SYSTEM is SECAM, and the sound standard is DK, judge again whether the user selects France, Luxembourg, Switzerland in the national choice menus, assert that the sound standard is L if then force;
E, storing frequencies point, S-SYSTEM, sound standard;
F, tuner sound standard is re-set as the acquiescence standard, platform number adds 1;
The operation of G, repetition B to F;
When I, frequency values have been expired above the platform number of 870M hertz or storage, search platform and finish.
2. the channel search method of automatic identification S-SYSTEM according to claim 1 and sound standard, it is characterized in that: in step I, before frequency values surpasses 870 hertz, searches platform and finish, judge whether country's selection that the user sets is France, Luxembourg, Switzerland, if then carry out following step:
A ', earlier tuner sound standard is set, when frequency values during less than the 100M hertz tuner sound standard be set to L ', otherwise be made as L; The control tuner changes from the low frequency to the high frequency successively, and detects line synchronizing signal; If line synchronizing signal is arranged, detect tuner AFC again, determine that this frequency is the platform of an existence;
B ', startup colored identification and the automatic identification step of sound automatically;
C ', elder generation start the automatic identification step of sound, if judge that the sound standard is BG or I or M, this that then abandon searching out enters D ';
Perhaps
Start the automatic identification step of sound earlier, if judge that the sound standard is L, then start colored identification automatically, if S-SYSTEM is the NTSC of PAL or 3.58M or the NTSC of 4.43M, the sound recognition standard, after identification, confirm as DK or BG or I or M, the standard that tuner voice output standard is set to identify; Discern S-SYSTEM again, confirm as the NTSC of PAL or SECAM or 3.58M or the NTSC of 4.43M through judgement;
D ', repeating step A ', B ', C ';
E ', when frequency values surpasses the 870M hertz, the information of the platform that searches out is sorted from small to large by frequency values, search platform and finish.
3. the channel search method of automatic identification S-SYSTEM according to claim 2 and sound standard, it is characterized in that: in aforementioned C ' step, if the sound standard is L or L ', S-SYSTEM is identified as SECAM, the frequency values of the platform of storage before then searching, if and the frequency values difference of this platform that searches is in 1M up and down, then think same, and the position of the platform of storage before current frequency values, S-SYSTEM, sound standard existed, otherwise deposit position when the foreground as the platform that newly searches out; Platform number adds 1 then, and repeating step A ', B ', C ' and this step when frequency values surpasses 870 hertz, sort the information of the platform that searched out one time by frequency values from small to large, search platform and finish.
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| CN2006100700377A CN101179684B (en) | 2006-11-06 | 2006-11-06 | Channel searching method capable of identifying automatically color standard and voice standard |
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| CN2006100700377A CN101179684B (en) | 2006-11-06 | 2006-11-06 | Channel searching method capable of identifying automatically color standard and voice standard |
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| CN101179684B true CN101179684B (en) | 2010-08-18 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102123261B (en) * | 2010-01-11 | 2015-06-10 | 康佳集团股份有限公司 | Television as well as channel search method and system thereof |
| CN102202197A (en) * | 2011-05-25 | 2011-09-28 | 广州视源电子科技有限公司 | A kind of channel program searching method and television set |
| CN103686424B (en) * | 2013-12-13 | 2017-06-13 | 深圳Tcl新技术有限公司 | The automatic setting method and device of sound system |
| CN105681887B (en) * | 2015-06-10 | 2018-09-04 | 深圳Tcl数字技术有限公司 | TV channel search method and device |
| CN109194895A (en) * | 2018-10-19 | 2019-01-11 | 晶晨半导体(上海)股份有限公司 | Television board, television system and television system configuration method |
| CN111385614B (en) * | 2018-12-29 | 2022-05-06 | 深圳Tcl数字技术有限公司 | Voice system identification method, storage medium and smart television |
| CN111147785A (en) * | 2019-11-12 | 2020-05-12 | 深圳Tcl数字技术有限公司 | Signal system loading method and device, video playing terminal and readable storage medium |
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| US4975775A (en) * | 1987-11-19 | 1990-12-04 | Sharp Kabushiki Kaisha | Tuner for receiving television signal in frequency division multiplex system and television signal in time division multiplex system |
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Address after: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee after: Hisense Video Technology Co.,Ltd. Address before: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Patentee before: HISENSE ELECTRIC Co.,Ltd. |