CN102123261B - Television as well as channel search method and system thereof - Google Patents
Television as well as channel search method and system thereof Download PDFInfo
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Abstract
The invention is suitable for the technical field of televisions, and provides a television as well as a channel search method and system thereof, wherein the method comprises the following steps: receiving a channel search signal, and then beginning to search television signals according to the channel search signal; identifying the image format of a television signal searched for the first time, and rewriting the value of a register related to the image, so that the value of the register related to the image is corresponding to the identified image format; and when other television signals are searched, reading the values of the register related to the images, and determining the image formats corresponding to the values of the register related to the images as the image formats of the other television signals, thereby avoiding the identification on the image formats of the corresponding television signals after the television signals are searched each time, saving the total time for channel search, and reducing the complexity of channel search.
Description
Technical field
The invention belongs to TV technology, particularly relate to a kind of television set and channel search method, system.
Background technology
At present, user, when using television set received television signal, needs to search for TV programme, namely needs to carry out tuning operation.Because country variant may be different with the picture-and-sound standard of the TV signal in area, therefore the decoding chip in current television set all supports multiple picture-and-sound standard, such as, line-by-line inversion (the Phase Alteration Line listed in the menu of television set, PAL) standard, transmit colored in order and store (Sequentiel Couleur A Memoire, SECAM) standard, NTSC (National Television Standards Committee, NTSC) video standard such as standard, and D/K, B/G, the sound system such as I.Only have when television set correctly can identify the standard of the TV signal that current search arrives, television set could play image and the sound of this TV signal normally.
Traditional television set is when carrying out tuning, need user before the operation of beginning tuning, by the menu in television set, picture-and-sound standard is chosen local correct standard, this manual selection mode adds the operation easier of the domestic consumer almost not having TV relevant knowledge.For this reason, the another kind of TV set to search programmes mode that prior art provides carries out automatic standard identification by the tuning software of television internal to the TV signal searched, this kind of mode after searching TV signal at every turn, all need to identify the standard of the corresponding TV signal searched, although the application of this tuning software makes user not need to pre-set, but owing to all needing to carry out the identification of a standard after searching TV signal at every turn, make the whole tuning time become longer, improve the complexity of tuning.
Summary of the invention
The object of the embodiment of the present invention is the channel search method providing a kind of television set, be intended to solve prior art provide TV set to search programmes mode after searching TV signal at every turn, all need to identify the standard of the corresponding TV signal searched, make the whole tuning time become longer, improve the complexity issue of tuning.
The embodiment of the present invention is achieved in that a kind of channel search method of television set, and described television set comprises the register relevant to image, said method comprising the steps of:
Receive tuning signal, and start searching television signal according to described tuning signal;
Identify the video standard of the TV signal searched first, and rewrite the value of described relevant to image register, the value making described relevant to image register is corresponding with the described video standard recognized;
When searching other TV signal, reading the value of described relevant to image register, the video standard corresponding to the value of the described register relevant with image being defined as the video standard of other TV signal described.
Another object of the embodiment of the present invention is the channel searching system providing a kind of television set, and described system comprises:
The register relevant to image;
Signal receiving unit, for receiving tuning signal;
TV signal search unit, starts searching television signal for the tuning signal received according to described signal receiving unit;
Standard recognition unit, for identifying the video standard of the TV signal that described TV signal search unit searches first;
Rewrite unit, for rewriting the value of described relevant to image register, the video standard that the value of described relevant to image register and described standard recognition unit are recognized is corresponding;
Reading unit, for when described TV signal search unit searches other TV signal, read the value of described relevant to image register, video standard corresponding for the value of the described register relevant to image is defined as the video standard of other TV signal described.
Another object of the embodiment of the present invention is to provide a kind of television set, comprises the channel searching system of a television set, and the channel searching system of described television set adopts the channel searching system of television set as above.
The channel search method provided due to the embodiment of the present invention is after identifying and searching TV signal first, rewrite the value of the register relevant to image, the value making the register relevant to image is corresponding with the video standard recognized, after searching TV signal afterwards, read the value of the register relevant to image so at every turn, avoid the identification to corresponding TV signal video standard after at every turn searching TV signal, save the overall time of tuning, reduce the complexity of tuning.
Accompanying drawing explanation
Fig. 1 is the flow chart of the channel search method of the television set that the embodiment of the present invention provides;
Fig. 2 is the structure principle chart of the channel searching system of the television set that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, 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 explain the present invention, be not intended to limit the present invention.
The station search mode provided due to prior art, after searching TV signal, all needs to identify the standard of the corresponding TV signal searched at every turn, adds the overall tuning time.An increasing process due to each tuning completes at the three unities often, and for multiple TV signal that same point searching arrives, its standard is identical, for this reason, the channel search method that the embodiment of the present invention provides carries out the automatic identification of a standard after searching TV signal first, and rewrite the value of the register relevant to image, the value making the register relevant to image is corresponding with the video standard recognized, and reads the value of the register relevant to image like this after searching TV signal afterwards at every turn.
Fig. 1 shows the flow process of the channel search method of the television set that the embodiment of the present invention provides.
In step S101, receive tuning signal, and start searching television signal according to this tuning signal.
Tuning signal wherein both can manual tuning signal, also can be automatic channel search signal, and before step S101, can also comprise the following steps: preset tuning frequency range, the step then starting searching television signal according to this tuning signal specifically starts searching television signal in the tuning frequency range preset, to improve the speed of tuning according to this tuning signal.
In step s 102, identify the video standard of the TV signal searched first, and rewrite the value of the register relevant to image, the value making the register relevant to image is corresponding with the video standard recognized.
The video standard of TV signal wherein can be prestore in television decoding chip can carry out in the multiple video standard of decoding any one, such as, pal mode, Sequential Color and Memory system formula, the video standards such as TSC-system formula, and according to the kind of the video standard prestored in decoding chip and quantity, any one standard RM existing can be adopted to carry out video standard identification to the TV signal searched first, such as, when the pal mode that prestored in decoding chip, when Sequential Color and Memory system formula and TSC-system formula, the recognition methods of common standard can be adopted: calculate level (OK) the synchronizing signal number occurred in the time interval of adjacent two vertical (field) synchronizing signals, if count results is 321.5 (15625/50) left and right, then judge that this TV signal as PAL/SECAM standard (OK, field-scanning period is 15625Hz, 50Hz), if count results is about 262.5 (15750/60), then judge that this TV signal as TSC-system formula (OK, field-scanning period is 15750Hz, 60Hz), the preferential diagnostic method of pal mode or Sequential Color and Memory system formula diagnostic method is taked to identify pal mode and Sequential Color and Memory system formula afterwards, for the preferential diagnostic method of pal mode, the circuit such as the decoding in television set are first made to be in the state receiving PAL signal, if the colour killer circuit in television set is failure to actuate, then show the TV signal PAL signal really received, if colour killer circuit action, then show that the TV signal received is SECAM or black/white (B/w) signal.
In step s 103, when searching other TV signal, reading the value of the register relevant to image, video standard corresponding for the value of the register relevant to image being defined as the video standard of other TV signal.
The channel search method provided due to the embodiment of the present invention is after identifying and searching TV signal first, rewrite the value of the register relevant to image, the value making the register relevant to image is corresponding with the video standard recognized, after searching TV signal afterwards, read the value of the register relevant to image so at every turn, avoid the identification to corresponding TV signal video standard after at every turn searching TV signal, save the overall time of tuning, reduce the complexity of tuning.
In order to save the overall time of tuning further, in the embodiment of the present invention, before the step of video standard identifying the TV signal searched first, afterwards or simultaneously, can also comprise the following steps: the sound system identifying the TV signal searched first, and rewrite the value of the register relevant to sound accompaniment, the value making the register relevant to sound accompaniment is corresponding with the sound system recognized, then after the step searching other TV signal, can also comprise the following steps: the value reading the register relevant to sound accompaniment, be the sound system of corresponding TV signal.Avoid the identification to corresponding TV signal sound system after at every turn searching TV signal, save the overall time of tuning further.The sound system of TV signal wherein can be prestore in television decoding chip can carry out in the multiple sound system of decoding any one, such as, D/K, B/G, the sound system such as I, and according to the kind of the sound system prestored in decoding chip and quantity, any one standard RM existing can be adopted to carry out sound system identification to the TV signal searched first.
Fig. 2 is the structural principle of the channel searching system of the television set that the embodiment of the present invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
Signal receiving unit 11 is for receiving tuning signal, TV signal search unit 12 starts searching television signal for the tuning signal received according to signal receiving unit 11, standard recognition unit 13 is for identifying the video standard of the TV signal that TV signal search unit 12 searches first, rewrite unit 14 for rewriting the value of the register 16 relevant to image, the video standard that the value of the register 16 relevant to image and standard recognition unit 13 are recognized is corresponding, reading unit 17 is for when TV signal search unit 12 searches other TV signal, read the value of the register 16 relevant to image, video standard corresponding for the value of the register relevant to image is defined as the video standard of other TV signal.
Wherein the tuning signal that receives of signal receiving unit 11 both can manual tuning signal, also can be automatic channel search signal, and the channel searching system of television set that the embodiment of the present invention provides can also comprise a tuning predetermined frequency unit (not shown), for default tuning frequency range, then TV signal search unit 12 is now that the tuning signal received according to signal receiving unit 11 starts searching television signal in the tuning frequency range that tuning predetermined frequency unit is default, to improve the speed of tuning.Wherein standard recognition unit 13 identifies that the mode of the video standard of the TV signal that TV signal search unit 12 searches is described above, does not repeat them here.
The channel searching system provided due to the embodiment of the present invention identifies after TV signal search unit 12 searches TV signal first at standard recognition unit 13, the value of the register 16 relevant to image is rewritten by rewriting unit 14, the video standard that the value of the register 16 relevant to image and standard recognition unit 13 are recognized is corresponding, after searching TV signal afterwards, read the value of the register 16 relevant to image so at every turn, avoid the identification to corresponding TV signal video standard after at every turn searching TV signal, save the overall time of tuning, reduce the complexity of tuning.
In order to save the overall time of tuning further, the channel searching system of the television set that the embodiment of the present invention provides can also comprise the register 15 relevant to sound accompaniment, standard recognition unit 13 is also for identifying the sound system of the TV signal that TV signal search unit 12 searches first, rewrite unit 14 also for rewriting the value of the register 15 relevant to sound accompaniment, the sound system that the value of the register 15 relevant to sound accompaniment and standard recognition unit 13 are recognized is corresponding, reading unit 17 is also for when TV signal search unit 12 searches other TV signal, read the value of the register 15 relevant to sound accompaniment, be the sound system of corresponding TV signal, avoid the identification to corresponding TV signal sound system after at every turn searching TV signal, save the overall time of tuning further.The sound system of TV signal wherein can be prestore in television decoding chip can carry out in the multiple sound system of decoding any one, such as, D/K, B/G, the sound system such as I, and according to the kind of the sound system prestored in decoding chip and quantity, any one standard RM existing can be adopted to carry out sound system identification to the TV signal searched first.
The embodiment of the present invention additionally provides a kind of television set, comprises the channel searching system of a television set as above.
The channel search method provided due to the embodiment of the present invention is after identifying and searching TV signal first, rewrite the value of the register relevant to image, the value making the register relevant to image is corresponding with the video standard recognized, after searching TV signal afterwards, read the value of the register relevant to image so at every turn, avoid the identification to corresponding TV signal video standard after at every turn searching TV signal, save the overall time of tuning, reduce the complexity of tuning; In addition, by identifying the sound system of the TV signal searched first, and rewrite the value of the register relevant to sound accompaniment, the value making the register relevant to sound accompaniment is corresponding with the sound system recognized, and then after making to search other TV signal, read the value of the register relevant to sound accompaniment, be the sound system of corresponding TV signal, avoid the identification to corresponding TV signal sound system after at every turn searching TV signal, save the overall time of tuning further.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can control to be correlated with by program completes, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a channel search method for television set, is characterized in that, described television set comprises the register relevant to image, said method comprising the steps of:
Receive tuning signal, and start searching television signal according to described tuning signal;
According to kind and the quantity selective recognition mode of the video standard prestored, the video standard of the TV signal searched first with selected RM identification, and rewrite the value of described relevant to image register, the value making described relevant to image register is corresponding with the described video standard recognized;
When searching other TV signal, reading the value of described relevant to image register, the video standard corresponding to the value of the described register relevant with image being defined as the video standard of other TV signal described.
2. the channel search method of television set as claimed in claim 1, it is characterized in that, before the step of described reception tuning signal, described method is further comprising the steps of: preset tuning frequency range;
The described step starting searching television signal according to described tuning signal is specially: start searching television signal in the described tuning frequency range preset according to described tuning signal.
3. the channel search method of television set as claimed in claim 1, it is characterized in that, the video standard of described TV signal is pal mode, Sequential Color and Memory system formula or TSC-system formula.
4. the channel search method of television set as claimed in claim 1, it is characterized in that, described television set also comprises the register relevant to sound accompaniment, before the step of the video standard of the TV signal searched first in described identification, afterwards or simultaneously, described method is further comprising the steps of: the sound system identifying the TV signal searched first, and rewrite the value of described relevant to sound accompaniment register, the value making described relevant to sound accompaniment register is corresponding with the described sound system recognized;
Described search the step of other TV signal after, described method is further comprising the steps of: the value reading the described register relevant to sound accompaniment, is the sound system of corresponding TV signal.
5. a channel searching system for television set, is characterized in that, described system comprises:
The register relevant to image;
Signal receiving unit, for receiving tuning signal;
TV signal search unit, starts searching television signal for the tuning signal received according to described signal receiving unit;
Standard recognition unit, for according to the kind of video standard prestored and quantity selective recognition mode, the video standard of the TV signal searched first with TV signal search unit described in selected RM identification;
Rewrite unit, for rewriting the value of described relevant to image register, the video standard that the value of described relevant to image register and described standard recognition unit are recognized is corresponding;
Reading unit, for when described TV signal search unit searches other TV signal, read the value of described relevant to image register, the video standard corresponding to the value of the described register relevant with image is defined as the video standard of other TV signal described.
6. the channel searching system of television set as claimed in claim 5, it is characterized in that, described system also comprises one for the tuning predetermined frequency unit of default tuning frequency range, and described TV signal search unit is searching television signal in the tuning signal received according to the described signal receiving unit tuning frequency range that starts to preset at described tuning predetermined frequency unit.
7. the channel searching system of television set as claimed in claim 5, it is characterized in that, the video standard of described TV signal is pal mode, Sequential Color and Memory system formula or TSC-system formula.
8. the channel searching system of television set as claimed in claim 5, it is characterized in that, described system also comprises the register relevant to sound accompaniment, described standard recognition unit is also for identifying the sound system of the TV signal that described TV signal search unit searches first, described rewriting unit is also for rewriting the value of described relevant to sound accompaniment register, the sound system that the value of described relevant to sound accompaniment register and described standard recognition unit are recognized is corresponding, described reading unit is also for when described TV signal search unit searches other TV signal, read the value of described relevant to sound accompaniment register, be the sound system of corresponding TV signal.
9. a television set, comprises the channel searching system of a television set, it is characterized in that, the channel searching system of described television set adopts the channel searching system of the television set as described in any one of claim 5 to 8.
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| CN201010042744.1A CN102123261B (en) | 2010-01-11 | 2010-01-11 | Television as well as channel search method and system thereof |
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| CN201010042744.1A CN102123261B (en) | 2010-01-11 | 2010-01-11 | Television as well as channel search method and system thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| WO2020020157A1 (en) | 2018-07-25 | 2020-01-30 | 杭州海康威视数字技术股份有限公司 | Video signal recognition method and apparatus, electronic device and readable storage medium |
| CN112911188B (en) * | 2018-07-25 | 2022-09-30 | 杭州海康威视数字技术股份有限公司 | Video signal system identification method and device, electronic equipment and readable storage medium |
| 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 |
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| CN101212607A (en) * | 2006-12-31 | 2008-07-02 | 康佳集团股份有限公司 | Automatic channel search method for TV set |
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| CN1777257A (en) * | 2005-11-29 | 2006-05-24 | 天津三星电子显示器有限公司 | Method for automatically identifying received signal standard for analogue television signal receiver |
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