CN1615005A - Tv-set channel searching method - Google Patents
Tv-set channel searching method Download PDFInfo
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- CN1615005A CN1615005A CN 200310103501 CN200310103501A CN1615005A CN 1615005 A CN1615005 A CN 1615005A CN 200310103501 CN200310103501 CN 200310103501 CN 200310103501 A CN200310103501 A CN 200310103501A CN 1615005 A CN1615005 A CN 1615005A
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Abstract
The method includes following steps:the initial scanning frequency and frequency interval are preset; the initial scanning frequency is taken as origin to scan the multi tv channels in detecting frequency rang; the frequency and channel number of searched channel signal is saved until scanning all frequency. The invention takes frequency as searching basis instead of taking channel list as searching basis.
Description
Technical field
The present invention relates to a kind of channel channel search method, particularly relate to a kind of Television Channel Search Method.
Background technology
The distribution of television channel now, though (the ConsultativeCommittee for International Radio of Consultative Committee on International Radio (CCIR) is arranged, CCIR) standard of Zhi Dinging, but the frequency that makes its standard channel because of the quality of restriction of regional landform and transmitting station is deviation to some extent, make the rating quality be affected, or have effectively to find channel and cause and to watch due radio station, with the China's Mainland, because of a former vast signal quality that causes differs, make that also the system near side (ns) condition district is mixed and disorderly and neighbouring country is numerous, again with the international television Standards Institution (NTSC) of U.S. system, except wired and wireless, wired system is divided into STD (Standard) again, HRC (Harmonic Related Carrier), IRC (Incremental Related Carrier), the user does not understand also easily living puzzled, also easily because of the user does not understand, set wrong frequency system and can't search effective TV signal.
Seeing also shown in Fig. 3 A, is the channel search method of prior art.Should existing known channel search method all be to search the standard channel table that standard is worked out, searching on fixed frequency has or not television signal as criterion, if the standard frequency on the frequency meter of television channel is deviation to some extent, very easily cause erroneous judgement and the leakage channel cause can't reception, even if but or reception but because of having error to cause reception bad with centre frequency.
Seeing also shown in Fig. 3 B, is the procedure chart that existing known television channel is searched platform.As searching platform with old-fashioned method, after having searched CH6 (85.25MHz), need skip to CH7 (169.25MHz) (as step S320), search out CH13 (211.25MHz) in proper order after, continue to search CH14, so rebound CH14 (115.25MHz) (as step S340) again.Same situation also occurs in searches channel CH22-CH23, CH64-CH65, and CH94-CH95 is in the time of CH99-CH100.
Aspect default, U.S. area TV except wired and wireless, wired system has the standard of STD, HRC, IRC again.Then seeing also shown in Fig. 2 A, is the channel frequency contrast figure of existing known CATV, in 2A figure, these three kinds of systems difference to some extent on channel frequency, but IRC except the 5th different with the 6th with other system, other channel is all identical with the STD system.Seeing also shown in Fig. 2 B, is the disparity map of existing conventional system HRC and STD and IRC channel frequency.Can recognize clearly that in this figure except the 5th and the 6th, the HRC system is then all different with the IRC frequency with other other two STD of system.
In sum, the user need be pre-conditioned to correct television system before use, can be correct search channel, the user easily causes problem aspect the reception because of the mistake on setting in that the situation of being unfamiliar with the system television frequency system is next.
This shows that above-mentioned existing Television Channel Search Method still has defective, and demands urgently further being improved.In order to solve the defective of existing Television Channel Search Method, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but does not see always that for a long time suitable design finished by development, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing Television Channel Search Method exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation,, make it have more practicality in the hope of founding a kind of new Television Channel Search Method.Through constantly research, design, and after studying repeatedly and improving, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing Television Channel Search Method exists, and provide a kind of new Television Channel Search Method, no matter technical problem to be solved is that it can be solved is any signal and system, under wired or wireless situation, all can effectively search radio station and watch best TV signal, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of Television Channel Search Method that the present invention proposes, in order to search a plurality of channels, this Television Channel Search Method may further comprise the steps: set an initial scanning frequency; Set a frequency interval; Be starting point and be the unit that sequential search is detected a plurality of access channel signals in the frequency band scope between a highest frequency and low-limit frequency, till all frequencies are all finished scanning with this frequency interval with this initial scanning frequency; And when searching each those access channel signal, just remember the frequency and the channel identification code of each those access channel signal.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid Television Channel Search Method, it more comprises from respectively this frequency that searches, defines respectively this channel.
Aforesaid Television Channel Search Method, wherein said frequency interval are to be the upper limit with the frequency range of this channel respectively.
Aforesaid Television Channel Search Method, the search detecting of wherein said each those access channel signal is according to a synchronous signal.
Aforesaid Television Channel Search Method, this Television Channel Search Method are to be applicable to PAL system and NTSC system.
Aforesaid Television Channel Search Method wherein when non-this highest frequency of this initial scanning frequency, then is scanned up to this highest frequency from this initial scanning frequency, again till low-limit frequency is scanned up to this initial frequency.
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of Television Channel Search Method according to the present invention's proposition, in order to search a plurality of access channel signals at a frequency band, this frequency band has at least one not frequency of utilization band, and this Television Channel Search Method may further comprise the steps: set an initial scanning frequency and set a frequency interval; And be starting point and be the unit that with this initial scanning frequency this frequency band is all finished scanning with each those channel frequency of detecting up to all frequencies between whole highest frequency of sequential search and low-limit frequency with this frequency interval; Wherein when searching an access channel signal, just remember frequency and channel identification code that should access channel signal, when searching this not during the frequency of utilization band, just skip over this frequency band, continue to search each those access channel signal of detecting, till finishing all frequency searchings.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid Television Channel Search Method wherein when non-this highest frequency of this initial scanning frequency, then is scanned up to this highest frequency from this initial scanning frequency, again till low-limit frequency is scanned up to this initial frequency.
Aforesaid Television Channel Search Method, it more comprises from the frequency of respectively this channel that searches, and defines respectively this channel.
Aforesaid Television Channel Search Method, wherein said frequency interval are to be the upper limit with a frequency range of this channel respectively.
Aforesaid Television Channel Search Method, the search detecting of wherein said each those access channel signal is according to a synchronous signal.
Aforesaid Television Channel Search Method, wherein said not frequency of utilization band comprises a unnecessary frequency band.
Aforesaid Television Channel Search Method, wherein said not frequency of utilization band comprises a fixed frequency.
The object of the invention to solve the technical problems also realizes by the following technical solutions.According to a kind of Television Channel Search Method that the present invention proposes, in order to search a plurality of channels in a frequency band, this Television Channel Search Method may further comprise the steps: set an initial scanning frequency; Search access channel signal between a highest frequency and low-limit frequency; Judge whether to detect a channel, if detect this channel, then with this channel memory; Judge whether to detect a frequency of utilization band not, if then skip over this frequency of utilization band; Judge whether that all frequencies all finish scanning, when all frequencies are not finished scanning, then frequency is increased the increment of a frequency interval, continue to search the succeeding channel signal, when all frequencies are all finished scanning, then finish this Television Channel Search Method.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid Television Channel Search Method wherein when the non-highest frequency of initial scanning frequency, then is scanned up to this highest frequency from this initial scanning frequency, again till low-limit frequency is scanned up to this initial frequency.
Aforesaid Television Channel Search Method, the detecting of wherein said channel more comprises: when detecting this channel, memory is to a channel identification code and a channel frequency that should channel.
Aforesaid Television Channel Search Method, it more comprises from the frequency of respectively this channel that searches, and defines respectively this channel.
Aforesaid Television Channel Search Method, wherein said frequency interval are to be the upper limit with a frequency range of this channel respectively.
Aforesaid Television Channel Search Method, the search detecting of wherein said each those access channel signal is according to a synchronous signal.
Aforesaid Television Channel Search Method, wherein said not frequency of utilization band comprises a unnecessary frequency band.
Aforesaid Television Channel Search Method, wherein said not frequency of utilization band comprises a fixed frequency.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, the present invention proposes a kind of Television Channel Search Method, at first, set initial scanning frequency and frequency interval, if this initial scanning frequency is not highest frequency or low-limit frequency, then from initial scanning frequency to highest frequency or till from initial scanning frequency to low-limit frequency, the scanning of all frequencies is finished on blanket type ground with all access channel signals of frequency sequential search.Wherein skip the frequency of not using (Antenna TV) in some standards or banning use of and search platform speed with quickening.To search again afterwards channel and standard frequency table relatively, determine the position of the existence of channel and centre frequency after, deposit channel table in according to the distributing position and the order of standard channel in proper order or with standard channel contrast back, the channel identification code use when watching channel selection.
Via as can be known above-mentioned, TV channel search method of the present invention is not to be that benchmark is detected with the standard channel, but be that benchmark is detected television signal with the frequency, therefore under the situation that needn't use any form or standard, all can be directly by the frequency searching channel can effectively search frequency signal, find local all best signals in radio station, and the channel that contrast stores back channel table is for the rating use, can solve exempt from the user because of the initialization system mistake causes can't reception problem.
In sum, the Television Channel Search Method that the present invention is special, in order to search most television channels, this method is to set initial scanning frequency and frequency interval earlier, be that starting point begins to search most television channels in the detecting frequency band scope with this initial scanning frequency then, and the access channel signal that will search gained remember its frequency with and channel identification code, all finish scanning up to all frequencies.This method is that benchmark is searched platform with being that the method for searching stage fiducial is improved as according to frequency according to channel table in the prior art, no matter can solve is any signal and system, under wired or wireless situation, all can effectively search radio station and watch best TV signal, thereby be suitable for practicality more.It has above-mentioned plurality of advantages and practical value, and in class methods, do not see have similar design to publish or use and really genus innovation, no matter it is all having bigger improvement on method or on the function, have technically than much progress, and produced handy and practical effect, and more existing Television Channel Search Method has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Figure 1A is the flow chart of a kind of Television Channel Search Method of preferred embodiment according to the present invention.
Figure 1B is the distribution figure of frequency band mid band.
Fig. 2 A is the channel frequency contrast figure that has known CATV now.
Fig. 2 B is the disparity map of existing conventional system HRC and STD and IRC channel frequency.
Fig. 3 A is the flow chart that has known Television Channel Search Method now.
Fig. 3 B is the procedure chart that existing known television channel is searched platform.
Fig. 4 is the hardware structure calcspar of general television system.
400: television system 402: tuning module (tuner module)
404a: television antenna 404b: cable TV signal input end
406: video decoded device (video decoder) 408: video signal treatment circuit
410: micro-control unit 412: memory circuit
414: input circuit 416: accurate position detector
420: display S102: setpoint frequency is initial scanning frequency
S104: channel search signal S106: whether detect access channel signal
S108: increase frequency with the predeterminated frequency unit of being spaced apart
S110: the frequency and the channel identification code of memory access channel signal
S112: increase frequency S114 according to the channel spacing size: skip over not frequency of utilization band
S116: whether frequency is higher than highest frequency S118 at present: resolve channel identification code
S320: skip to channel 7 S340: rebound channel 14
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its concrete grammar of Television Channel Search Method, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Of the present invention is to be benchmark with the frequency when focusing on searching platform, and non-traditional channel benchmark.That is whether the present invention is frequency to be added up to detect gradually have channel to exist when searching platform.Therefore, can be in proper order and the frequency band of scanned whole channel accurately.Below, according to this notion and the graphic embodiments of the invention that illustrate.Framework of the present invention does not need traditional channel table, and in other words, the channel framework that does not need to be subject to specific standard just can search channel.
Because television system has PAL or NTSC system etc. at present, wherein a kind of system also can't use in another system.Even if there is the TV that can satisfy dual system in market, but on setting, still belong to complicated.Therefore, according to framework of the present invention, because directly utilize frequency to search platform one by one, so each system gets channel table and becomes and be not necessary.So the present invention is applicable to that as PAL or NTSC system zonal even different cable television systems also all are suitable for.
Figure 1A is the flow chart according to a kind of Television Channel Search Method of a preferred embodiment of the present invention, and Figure 1B is the distribution figure of frequency band mid band.See also shown in Figure 1A and Figure 1B, at first at step S102, before searching television channel, it is initial scanning frequency and setpoint frequency interval that system sets the frequency of searching earlier.Initial scanning frequency is meant the beginning frequency point of channel band scope between a highest frequency and low-limit frequency, be lower than this channel and just can not find video signal, and highest frequency is meant the ending frequency point of a channel band scope, is higher than this channel and also can not finds video signal.In the present embodiment, initial scanning frequency can be set at 49.75MHz, and highest frequency can be made as 903.25MHz.This sets can be slightly different because of different specification channel bands.
Then, at step S104, be starting point then, and be unit, the access channel signal in the beginning channel search band with predefined frequency interval with predefined initial scanning frequency.The setting of frequency interval there is no particular restriction, and the minimum value of frequency interval can be set as television system, and can to detect tuning (tune) signal be main.Shown in Figure 1B, for example setting initial scanning frequency is 49.75MHz, and the highest frequency 903.25MHz that sets just television system is a unit with above-mentioned frequency interval, begins each frequency of channel search band gradually from frequency 49.75MHz gradually from frequency.
In step S106, system can judge whether to detect any access channel signal, and whether the sync signal of the video signal of detecting is for example arranged.If do not detect any access channel signal, then execution in step S108 is spaced apart unit increase frequency with predeterminated frequency, and whether continue has access channel signal in next frequency detecting.Otherwise, when having when certain frequency detects the sync signal of video signal, that is when searching a channel, just enter step S110 at step S106.At step S110, system is just with the in addition memory storage of the channel identification code of corresponding this frequency and this frequency.With system, can will search the channel identification code memory storage of channel frequency and correspondence in EEPROM (electrically erasable andprogrammable read only memory).
Then, in step S112, system increases frequency with a channel spacing, to carry out the channel detecting.This channel spacing is except being the upper limit with the channel size, and unmatchful channel spacing value limits.For example, be example with the channel size of 6MHz, channel spacing can be 4MHz or 3MHz etc.Actual value then adjusts according to actual operational scenario.Because after finding first access channel signal, the channel frequency of Chu Xianing up adds up with regard to showing channel size greatly afterwards.Therefore, at step S112, just, carry out the search of channel with the above-mentioned channel spacing frequency that adds up.
In addition, in step S114, system can skip over obsolete frequency band.No frequency band comprises unnecessary frequency band (redundant frequency band) or some fixed frequency (fixedfrequency).At each country, the frequency of utilization band is very the same for these, normally for certain purpose or particular reason and open the use.For example, ban use of because of the factor of national defence with regard to some frequency band is arranged in the Taiwan.In addition, some frequency band then may be contained the frequency of flight control, so also do not have open the use.Similar situation is all arranged in countries in the world, therefore before doing the channel search, can in advance obsolete frequency band or some characteristic frequency be preset according to the national conditions of various countries.Therefore, when carrying out the channel search, just can skip those frequency bands or specific fixed frequency.By this, can save some sets and the time of searching.
Then, at step S116, judge whether present frequency is higher than highest frequency.If present frequency is not higher than highest frequency, then return step S104; Otherwise, then entering step S118, the frequency of (Reslove) access channel signal is resolved in beginning according to channel identification code.
See also shown in Figure 1B, in the above-described embodiments, upwards search the frequency that signal is arranged from initial scanning frequency when beginning to search platform, search after the centre frequency of all signals, for example the frequency separation at 49.75MHz to 54.75MHz has signal, no matter be to be STD, HRC or IRC system at that time, though centre frequency difference to some extent, but must have only an access channel signal in this frequency separation, and know that the access channel signal in this frequency separation is defined as " channel 2 " for " channel 2 " and with it.Then continuing with 5MHz is that frequency interval increases frequency, searches the access channel signal in the next frequency separation, just continues to search in the scope of 54.75MHz to 59.75MHz.So after the 84MHz channel frequency that detects the 6th channel, also be to have detected after this band frequency interval of 54MHz-85.25MHz simultaneously, can remove the next channel of channel search 6 in the existing known techniques, but must jump to the access channel signal that 169.25MHz-211.25MHz removes to search this segment limit mid band 7-channel 13, but in the present invention, be continue to search the access channel signal of frequency separation in the channel 95 of 85.25MHz-115.25MHz to channel 99, till searching highest frequency, that is search till the defined highest frequency 903.25MHz of the present invention.
According to a preferred embodiment of the present invention, all " frequency that signal is arranged " can be contrasted back all " standard channel tables " and cooperate suitable channel identification code, therefore can disregard the difference of STD, HRC or IRC, search between highest frequency and low-limit frequency in the frequency separation behind all signals, behind the reference standard channel table, get final product reception, and need not lie in the channel difference that system causes.
Fig. 4 is general TV hardware capability calcspar, and the execution mode of the foregoing description method is described according to this framework.Method of the present invention can present television system be implemented, and does not need to change hardware structure, and needed only is that program correct with the micro-control unit of system gets final product.Therefore, do not rebuild under the cost increasing hardware, just simply mode reaches purpose of the present invention.
See also shown in Figure 4, the hardware structure of television system 400 consists essentially of a tuning module (tuner module) 402, television antenna 404a, cable TV signal input end (CATV) 404b, video decoded device 406, video signal treatment circuit 408, micro-control unit (micro controlunit, MCU) 410, memory circuit 412, input circuit 414, accurate position detector (level detector) 416 and display 420 etc., its annexation is each other seldom done narration at this as shown in Figure 4.
Below only be illustrated at part related to the present invention, other parts are relevant with existing known techniques, also seldom do explanation at this.Television system 400 receives television signal from television antenna 404a or cable TV end 404b.The signal that receives just exports video decoded device 406 and accurate position detector 416 to through tuning module 402.Video decoded device 406 can be at receiving and the signal of tuning mistake is decoded, and output sync signal Sync is to micro-control unit 410.In addition, the signal of tuning mistake also can be sent to accurate position detector 416.Whether accurate position detector 416 can have arrival position surely by this tuning signal of detecting, and exports the result to micro-control unit 410, and this tuning signal then may correspond to a channel if having then.Just can determine that this tuning signal be an access channel signal if video decoded device 406 is also exported most processing unit 410 of a synchronous signal Sync this moment.At this moment, micro-control unit can judge that just this tuning signal is an access channel signal.At this moment, micro-control unit 410 just comes setting contents of channel according to the frequency of this tuning signal, and the result is stored in the memory circuit 412.According to embodiments of the invention, above-mentioned process is that low-limit frequency sequential search from frequency band is to highest frequency, to find out corresponding channel one by one.Program in the micro-control unit 410 is just designed according to this notion.
When all channels all set finish after, the user just can be by input circuit 414, for example remote controller etc. is selected desired channel.After the process input circuit is imported desired channel, just be sent to micro-control unit 410.Just find out corresponding frequency and channel from memory circuit 412 this moment.Afterwards, be sent to the channel selection circuit 402b in the tuning module 402, carry out tuningly again by tuner 402a at this frequency, and export video decoded device 406 to.Video decoded device 406 just exports the result to video signal treatment circuit 408 with after the signal decoding, carry out necessary processing after, again video signal is presented on the display 420, view and admire for the user.
In sum, the present invention has following advantage at least:
The present invention not need by the channel form of standard channel also can search effectively TV station's signal.Under the situation of not using any form or standard, all can find local all best signals in radio station.Regional in a jumble for no channel table area or channel, also can no longer just can find television channel effectively by the channel form.For example, the PAL/DK system of China's Mainland.
In addition, the present invention does not need the sub-channel form promptly can search platform.For the zone that multiple channel table is arranged, do not need to be subjected to the restriction of channel table, also can search platform.Because the present invention is according to frequency and does not search platform by channel-table mode, even an area has multiple channel table to exist, method of the present invention all can be found the channel of each channel table one by one.That is no matter wireless or wired, perhaps wired various channel table specifications (for example STD of the U.S., HRD, IRC etc.).In addition, after searching platform also can by television frequency push back search platform number (as in the NTSC in the U.S., Taiwan system, perhaps Ou Zhou PAL system or the like)
The present invention can not be subjected to the region television system to set the restriction of difference, and can solve the problem of frequency departure.Because be to utilize frequency to search platform for benchmark, even the user has set wrong system access channel table, search platform because of being to use frequency, so still can search effectively the radio station signal.
The present invention is the power of constrained signal no longer, effectively received signal.When channel has unusual fluctuation or signal that deviation is arranged or changes, after searching platform again, originally more weak signal or the signal of deviation also can be searched platform more again to some extent, behind the signal that arrangement is received, it is stored to new channel table in proper order, or rearranging back the television station channel table of standard again, optimum frequency that promptly can local television channel provides best reception.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, but every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (21)
1, a kind of Television Channel Search Method in order to search a plurality of channels, is characterized in that this Television Channel Search Method may further comprise the steps:
Set an initial scanning frequency;
Set a frequency interval;
Be starting point and be the unit that sequential search is detected a plurality of access channel signals in the frequency band scope between a highest frequency and low-limit frequency, till all frequencies are all finished scanning with this frequency interval with this initial scanning frequency; And
When searching each those access channel signal, just remember the frequency and the channel identification code of each those access channel signal.
2, Television Channel Search Method according to claim 1 is characterized in that it more comprises from respectively this frequency that searches, and defines respectively this channel.
3, Television Channel Search Method according to claim 1 is characterized in that wherein said frequency interval is is the upper limit with the frequency range of this channel respectively.
4, Television Channel Search Method according to claim 1 is characterized in that the search detecting of wherein said each those access channel signal is according to a synchronous signal.
5, Television Channel Search Method according to claim 1 is characterized in that this Television Channel Search Method is to be applicable to PAL system and NTSC system.
6, Television Channel Search Method according to claim 1 is characterized in that wherein then being scanned up to this highest frequency from this initial scanning frequency, again till low-limit frequency is scanned up to this initial frequency when non-this highest frequency of this initial scanning frequency.
7, a kind of Television Channel Search Method, in order to search a plurality of access channel signals at a frequency band, this frequency band has at least one not frequency of utilization band, it is characterized in that this Television Channel Search Method may further comprise the steps:
Set an initial scanning frequency and set a frequency interval; And
Be starting point and be the unit that this frequency band is all finished scanning with each those channel frequency of detecting up to all frequencies between whole highest frequency of sequential search and low-limit frequency with this frequency interval with this initial scanning frequency; Wherein when searching an access channel signal, just remember frequency and channel identification code that should access channel signal, when searching this not during the frequency of utilization band, just skip over this frequency band, continue to search each those access channel signal of detecting, till finishing all frequency searchings.
8, Television Channel Search Method according to claim 7 is characterized in that wherein then being scanned up to this highest frequency from this initial scanning frequency, again till low-limit frequency is scanned up to this initial frequency when non-this highest frequency of this initial scanning frequency.
9, Television Channel Search Method according to claim 7 is characterized in that it more comprises from the frequency of respectively this channel that searches, and defines respectively this channel.
10, Television Channel Search Method according to claim 7 is characterized in that wherein said frequency interval is is the upper limit with a frequency range of this channel respectively.
11, Television Channel Search Method according to claim 7 is characterized in that the search detecting of wherein said each those access channel signal is according to a synchronous signal.
12, Television Channel Search Method according to claim 7 is characterized in that wherein said not frequency of utilization band comprises a unnecessary frequency band.
13, Television Channel Search Method according to claim 7 is characterized in that wherein said not frequency of utilization band comprises a fixed frequency.
14, a kind of Television Channel Search Method in order to search a plurality of channels in a frequency band, is characterized in that this Television Channel Search Method may further comprise the steps:
Set an initial scanning frequency;
Search access channel signal between a highest frequency and low-limit frequency;
Judge whether to detect a channel, if detect this channel, then with this channel memory;
Judge whether to detect a frequency of utilization band not, if then skip over this frequency of utilization band;
Judge whether that all frequencies all finish scanning, when all frequencies are not finished scanning, then frequency is increased the increment of a frequency interval, continue to search the succeeding channel signal, when all frequencies are all finished scanning, then finish this Television Channel Search Method.
15, Television Channel Search Method according to claim 14 is characterized in that wherein then being scanned up to this highest frequency from this initial scanning frequency, again till low-limit frequency is scanned up to this initial frequency when non-this highest frequency of this initial scanning frequency.
16, Television Channel Search Method according to claim 14 is characterized in that the detecting of wherein said channel more comprises: when detecting this channel, memory is to a channel identification code and a channel frequency that should channel.
17, Television Channel Search Method according to claim 14 is characterized in that it more comprises from the frequency of respectively this channel that searches, and defines respectively this channel.
18, Television Channel Search Method according to claim 14 is characterized in that wherein said frequency interval is is the upper limit with a frequency range of this channel respectively.
19, Television Channel Search Method according to claim 14 is characterized in that the search detecting of wherein said each those access channel signal is according to a synchronous signal.
20, Television Channel Search Method according to claim 14 is characterized in that wherein said not frequency of utilization band comprises a unnecessary frequency band.
21, Television Channel Search Method according to claim 14 is characterized in that wherein said not frequency of utilization band comprises a fixed frequency.
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| CN 200310103501 CN1278545C (en) | 2003-11-04 | 2003-11-04 | TV-set channel searching method |
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Cited By (7)
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| CN100468971C (en) * | 2005-06-03 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | Method for scanning channels |
| CN101668147B (en) * | 2009-09-10 | 2011-05-11 | 青岛海信电器股份有限公司 | Cable TV channel searching method and television |
| CN102256071A (en) * | 2010-05-19 | 2011-11-23 | 北京创毅视讯科技有限公司 | Method and device for searching channels in mobile analog television |
| CN105516798A (en) * | 2015-12-17 | 2016-04-20 | 深圳Tcl数字技术有限公司 | Channel search method and system for television terminal |
| CN106658166A (en) * | 2016-12-13 | 2017-05-10 | 广州视源电子科技股份有限公司 | Television program channel searching method, switching method and system |
| CN106658165A (en) * | 2016-12-09 | 2017-05-10 | 广州视源电子科技股份有限公司 | Television channel searching method and device |
| CN108111906A (en) * | 2017-12-26 | 2018-06-01 | 深圳Tcl数字技术有限公司 | Channel search method, device and computer readable storage medium |
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2003
- 2003-11-04 CN CN 200310103501 patent/CN1278545C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100468971C (en) * | 2005-06-03 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | Method for scanning channels |
| CN101668147B (en) * | 2009-09-10 | 2011-05-11 | 青岛海信电器股份有限公司 | Cable TV channel searching method and television |
| CN102256071A (en) * | 2010-05-19 | 2011-11-23 | 北京创毅视讯科技有限公司 | Method and device for searching channels in mobile analog television |
| CN102256071B (en) * | 2010-05-19 | 2012-11-21 | 北京创毅视讯科技有限公司 | Method and device for searching channels in mobile analog television |
| CN105516798A (en) * | 2015-12-17 | 2016-04-20 | 深圳Tcl数字技术有限公司 | Channel search method and system for television terminal |
| CN105516798B (en) * | 2015-12-17 | 2019-03-01 | 深圳Tcl数字技术有限公司 | Television terminal channel search method and system |
| CN106658165A (en) * | 2016-12-09 | 2017-05-10 | 广州视源电子科技股份有限公司 | Television channel searching method and device |
| CN106658166A (en) * | 2016-12-13 | 2017-05-10 | 广州视源电子科技股份有限公司 | Television program channel searching method, switching method and system |
| CN108111906A (en) * | 2017-12-26 | 2018-06-01 | 深圳Tcl数字技术有限公司 | Channel search method, device and computer readable storage medium |
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| CN1278545C (en) | 2006-10-04 |
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