CN101399946A - Channel searching method for television and television set thereof - Google Patents
Channel searching method for television and television set thereof Download PDFInfo
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- CN101399946A CN101399946A CNA2007101236346A CN200710123634A CN101399946A CN 101399946 A CN101399946 A CN 101399946A CN A2007101236346 A CNA2007101236346 A CN A2007101236346A CN 200710123634 A CN200710123634 A CN 200710123634A CN 101399946 A CN101399946 A CN 101399946A
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Abstract
The invention provides a method for searching channel and the TV. The method comprises following steps: a: when TV system searches present frequency point, judging if receiving speeding command, if so, to step b, or, to step c; b: skip the search for present frequency point, directly turning to searching for next frequency point; c: search optimum tuning point of present frequency point. The inventive technical scheme avoids wasting time on frequency point without program or user does not need, saves channel searching time, preferably satisfies user demand due to more humanization of TV.
Description
Technical field
The invention belongs to TV technology, relate in particular to the technology that TV is searched platform.
Background technology
After the user buys television set, need search platform usually, carry out the corresponding setting of channel and TV station, more behind new channel or the newly-increased channel, the user also needs to search again platform in TV station.
Current, TV is searched platform and mainly adopted two kinds to search the platform mode: full frequency band searches platform and channel table is searched platform.The basic principle that TV is searched platform is: at first lock a new frequency, if detect synchronizing signal at this frequency, may have programme signal near showing this frequency, begin to search platform.Generally speaking, around the optimum tuning point of a program, probably have in the bandwidth range of 2.5MHz to have synchronizing signal, but this optimum tuning point is not the centre in this bandwidth, but in the middle of this bandwidth frequency a little to right a little, it is concrete, and to search the platform flow process as follows:
1, (a promptly definite TV is searched the initial frequency of platform to new frequency of locking, as 43.25MHz), detect whether synchronizing signal is arranged, if there is synchronizing signal, change step 2, otherwise repeating step 1 enters the search (adding 50KHz as new frequency on the basis of former frequency) of next frequency;
2, there is synchronizing signal, whether judges the current demand signal amplitude, if change step 3, otherwise frequency increases 50KHz, repeating step 2 greater than 3.8V;
3, the current demand signal amplitude is then searched for forward with the step-length (step-length, the amplitude that promptly each frequency increases) of 50KHz greater than 3.8V;
4, the current demand signal amplitude is then searched for forward with the step-length of 50KHz still greater than 3.8V and there is synchronizing signal; If amplitude is greater than 1.9V, then the step-length with 50KHz continues search forward; When detecting amplitude less than 1.9V, the frequency of this moment is the optimum tuning point of this channel, deposits platform.
This shows from locking a frequency and need consume long time to the best frequency that searches this programme signal.Therefore, if at 43～866MHZ (43～866MHZ is the whole platform frequency range of searching) according to the bandwidth granularity step-searching, perhaps utilize channel table to search for one by one by fixing frequency) bandwidth between finish and once search platform, the time that needs to consume reaches half an hour sometimes.
The existing platform mode of searching is generally all searched the platform overlong time, selects Cable (wired) to finish once to search platform all to need the time more than 20 minutes as the television set in zone, present North America.Does why existing TV is searched platform need the so long time? key is, in bandwidth is the scope of 43～866MHZ, be not that programme signal is all arranged on each frequency, though between the regional program bandwidth granularity is arranged, but existing channel search method all is to search platform according to the mode of channel bandwidth interval stepping, so still need skew search platform about on up to a hundred the frequencies, it is slow to search platform speed.
Summary of the invention
The object of the present invention is to provide a kind of TV to search the method and the television set of platform, be intended to solve the slow-footed problem of platform of searching that exists in the prior art.
The present invention is achieved in that a kind of TV searches the method for platform, and described method comprises following step:
When a, television system are searched for current frequency, judge whether to receive the F.F. instruction, if change step b, otherwise change step c;
B, skip search, directly change search over to next frequency to described current frequency;
The optimum tuning point of c, the described current frequency of search.
Wherein step a specifically comprises:
When a1, described television system are searched for described current frequency, judge whether described current frequency exists corresponding TV programme, if not, then by remote controller or control panel input F.F. remote control mode, change step a2, if then change described step c;
After a2, described television system receive described F.F. remote control mode, described F.F. remote control mode is resolved, parse described F.F. instruction, change described step b according to described F.F. remote control mode.
Wherein step a specifically comprises:
When A1, described television system are searched for described current frequency, judge whether the TV station of described current frequency correspondence is the TV station that needs preservation, if not, then by remote controller or control panel input F.F. remote control mode, change steps A 2, if then change described step c;
After A2, described television system receive described F.F. remote control mode, described F.F. remote control mode is resolved, parse described F.F. instruction, change described step b according to described F.F. remote control mode.
Bandwidth between described current frequency and the described next frequency is a pre-set bandwidths.
Described next frequency is the next frequency of channel table appointment.
The present invention also provides a kind of television set, and described television set comprises microcontroller MCU and remote control receiving element, wherein:
Described remote control receiving element is used for receiving the F.F. remote control mode of remote controller or control panel input, and described F.F. remote control mode is transferred to described MCU;
Described MCU links to each other with described remote control receiving element, is used for resolving the F.F. remote control mode of described remote control receiving element transmission, parses the F.F. instruction from described F.F. remote control mode; According to the F.F. instruction that is parsed, control described television set and step to next frequency from current frequency, skip search to current frequency.
Described television set also comprises display unit, is used for showing described current frequency and corresponding channel thereof.
Described next frequency is the frequency after pre-set bandwidths of described current frequency stepping or the next frequency of channel table appointment.
When described current frequency did not have corresponding TV programme or corresponding TV programme not to need to preserve, described F.F. remote control mode was by triggering the remote controller key emission.
Described remote controller key is that program is regulated button or volume is regulated button.
The present invention overcomes the deficiencies in the prior art, employing is imported " F.F. " instruction under the situation that current frequency does not have corresponding TV programme or corresponding TV programme not to need to preserve, television set response " F.F. " instruction, television set control tuner is skipped the search to this frequency, directly change technical scheme over to the search of next frequency, thereby when having avoided searching platform with time waste on the frequency that the frequency that does not have program or user do not need to search for, saved the time of searching platform, make television set hommization more, better met user's demand.
Description of drawings
Fig. 1 is the described TV Principles block diagram of the embodiment of the invention;
Fig. 2 is the described automatic channel search flow chart of the embodiment of the invention.
Embodiment
Technical scheme provided by the invention is: in searching the platform process, if it is the undesired TV programme of user that certain frequency does not have corresponding TV programme or its TV programme to drink, then import a F.F. instruction, television set control tuner is skipped the search to this frequency, directly change next frequency over to, thereby save the time of searching platform.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The frequency of TV programme (TV station) all can be announced out by medium such as newspaper, the Internets at present, the user can understand each TV programme frequency points corresponding in view of the above, thereby judge in the entire belt wide region, it is oneself not want to watch which frequency does not have corresponding TV programme or its corresponding TV programme, for these television channels, the necessity that had not both had preservation does not have the necessity of searching for yet.Therefore, in searching the process of platform, when television set searched these channel frequency points corresponding, the user can control television set and skip search to these frequencies, directly enters next frequency.
See also Fig. 1, be the TV Principles block diagram that the embodiment of the invention provides, comprise microcontroller (MCU), remote control receiving element, display unit and memory cell, remote control receiving element, display unit and memory cell all link to each other with MCU, wherein:
The remote control receiving element is used for receiving " F.F. " remote control mode of user's input, and should be transferred to MCU by " F.F. " remote control mode; Should " F.F. " remote control mode being used for control system skips search to current frequency, directly changes next frequency over to.During practical application technical scheme provided by the invention, can also can use the button that is provided with separately by " program+" or " volume+" button on remote controller or the television set control panel to television transmission " F.F. " remote control mode;
MCU is used for receiving " F.F. " remote control mode of remote control receiving element input, parses " F.F. " instruction according to " F.F. " remote control mode, and control system is skipped the search to current frequency then, directly changes the search to next frequency over to;
Display unit is used for showing the frequency and the corresponding television channel number thereof of current search;
Memory cell is used for storing searches the platform program, searches the platform program and is called by MCU when searching platform, finishes the flow process of searching platform.
When TV user is searched platform, at first start TV and search the platform program by television set function menu, when television set locks some frequencies, the user judges that it is that oneself is disliked that this frequency does not have corresponding TV programme or the corresponding TV programme of this frequency, can directly import " F.F. " remote control mode by remote controller, after TV MCU receives " F.F. " remote control mode, parse " F.F. " instruction according to " F.F. " remote control mode, skip search to this frequency, directly change search over to, search the television channel that the user need preserve up to television set to next frequency.
Search at all-channel under the mode of platform, TV MCU is skipped the search to current frequency after parsing " F.F. " instruction, directly changes search to next frequency over to according to certain channel spacing (pre-set bandwidths); Search under the platform mode at channel table, TV MCU is skipped the search to current frequency after receiving " F.F. " instruction, directly changes the listed next frequency of channel table over to.
See also Fig. 2, be embodiment of the invention flow chart, specifically comprise following step:
1, after searching a frequency, judges whether to receive " F.F. " instruction;
If 2 receive " F.F. " instruction, change step 3, otherwise change step 5;
3, search the platform program and skip the current frequency of searching for, enter next frequency, screen OSD shows this frequency that promptly will search for simultaneously;
4, judge whether to receive " F.F. " instruction,, change step 3, otherwise change step 5 if receive;
5, begin the frequency that current screen shows is searched platform.
Search in the platform menu the user, at first the user may need to select local programme channel bandwidth (pre-set bandwidths) what are, there are 5MHz, 6MHz, 7MHz, 8MHz to select, also can be by the bandwidth of TV manufacturer according to the selected acquiescence of concrete condition of the sales region of television set.Being the mode of selecting search then, is full range point search mode or channel table way of search, and certainly, this also can be to give tacit consent to a kind of way of search by television manufacturer according to the concrete condition of concrete sales region.
Below be that example describes technical scheme provided by the invention in detail with 6MHz channel bandwidth and North America market Cable channel table way of search, technical scheme provided by the invention also can be general at other channel bandwidths with search in the platform mode.
Automatic channel search begins, and the automatic channel search program begins to begin the left and right deviation search from the frequency 75MHz of first channel, and shows channel and the concrete frequency of searching on the television set display unit; This moment, the user judged whether this frequency has corresponding TV programme, if do not have, then do not continue necessity of search, then input " F.F. " instruction, after TV MCU receives " F.F. " instruction, control system is skipped the search to this frequency of 75MHz, directly changes the search to this frequency of 59MHz over to; In like manner, when television set is searched for this frequency of 75MHz,, do not plan to preserve this channel, can skip this frequency yet if the user has no stomach for to the TV programme of this frequency correspondence.
For each frequency in the scope of 43～866MHZ, the user can be judged, if some frequencies do not have necessity of search, then directly skips; For the necessary frequency of search is arranged, television set is searched for normally, and preserves optimum tuning point.In addition, in searching the platform process, display shows the current frequency and the corresponding channel thereof of search, judges that to make things convenient for the user whether this frequency has corresponding TV programme, perhaps makes things convenient for the user to judge by channel whether the TV programme of this frequency correspondence is that oneself is liked.
In the embodiment of the invention,, during the practical application technical solution of the present invention, also can resolve by MCU then by the button input code on the television set control panel to be that example describes by remote controller key input " F.F. " remote control mode.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of TV is searched the method for platform, it is characterized in that, described method comprises following step:
When a, television system are searched for current frequency, judge whether to receive the F.F. instruction, if change step b, otherwise change step c;
B, skip search, directly change search over to next frequency to described current frequency;
The optimum tuning point of c, the described current frequency of search.
2, method according to claim 1 is characterized in that, wherein step a specifically comprises:
When a1, described television system are searched for described current frequency, judge whether described current frequency exists corresponding TV programme, if not, then by remote controller or control panel input F.F. remote control mode, change step a2, if then change described step c;
After a2, described television system receive described F.F. remote control mode, described F.F. remote control mode is resolved, parse described F.F. instruction, change described step b according to described F.F. remote control mode.
3, method according to claim 1 is characterized in that, wherein step a specifically comprises:
When A1, described television system are searched for described current frequency, judge whether the TV station of described current frequency correspondence is the TV station that needs preservation, if not, then by remote controller or control panel input F.F. remote control mode, change steps A 2, if then change described step c;
After A2, described television system receive described F.F. remote control mode, described F.F. remote control mode is resolved, parse described F.F. instruction, change described step b according to described F.F. remote control mode.
4, method according to claim 1 is characterized in that, the bandwidth between described current frequency and the described next frequency is a pre-set bandwidths.
5, method according to claim 1 is characterized in that, described next frequency is the next frequency of channel table appointment.
6, a kind of television set is characterized in that, described television set comprises microcontroller MCU and remote control receiving element, wherein:
Described remote control receiving element is used for receiving the F.F. remote control mode of remote controller or control panel input, and described F.F. remote control mode is transferred to described MCU;
Described MCU links to each other with described remote control receiving element, is used for resolving the F.F. remote control mode of described remote control receiving element transmission, parses the F.F. instruction from described F.F. remote control mode; According to the F.F. instruction that is parsed, control described television set and step to next frequency from current frequency, skip search to current frequency.
According to the described television set of claim 6, it is characterized in that 7, described television set also comprises display unit, be used for showing described current frequency and corresponding channel thereof.
According to the described television set of claim 6, it is characterized in that 8, described next frequency is the frequency after pre-set bandwidths of described current frequency stepping or the next frequency of channel table appointment.
According to the described television set of claim 6, it is characterized in that 9, when described current frequency did not have corresponding TV programme or corresponding TV programme not to need to preserve, described F.F. remote control mode was by triggering the remote controller key emission.
According to the described television set of claim 9, it is characterized in that 10, described remote controller key is that program is regulated button or volume is regulated button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101236346A CN101399946A (en) | 2007-09-26 | 2007-09-26 | Channel searching method for television and television set thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101236346A CN101399946A (en) | 2007-09-26 | 2007-09-26 | Channel searching method for television and television set thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101399946A true CN101399946A (en) | 2009-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101236346A Pending CN101399946A (en) | 2007-09-26 | 2007-09-26 | Channel searching method for television and television set thereof |
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| CN (1) | CN101399946A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2007
- 2007-09-26 CN CNA2007101236346A patent/CN101399946A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20090401 |