CN1708111A - TV set with double-tuner and method for automatic searching channel utilizing double-tuner - Google Patents
TV set with double-tuner and method for automatic searching channel utilizing double-tuner Download PDFInfo
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- CN1708111A CN1708111A CN 200410020715 CN200410020715A CN1708111A CN 1708111 A CN1708111 A CN 1708111A CN 200410020715 CN200410020715 CN 200410020715 CN 200410020715 A CN200410020715 A CN 200410020715A CN 1708111 A CN1708111 A CN 1708111A
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Abstract
The present invention is one kind of TV set with double tuner and thus high channel searching efficiency and the method of utilizing the double tuner in channel searching. The channel searching process includes the following steps: turning on the power supply of TV set and performing channel search with the double tuner; detecting broadcast signal in the channel searched with the double tuner; storing the detected broadcast signal channel in the memory; and finishing the channel searching after all the channels are searched out. The present invention has the advantages of high channel searching efficiency and reduced channel searching time.
Description
Technical field
The present invention relates to a kind of method that has the television set of dual tuner and utilize dual tuner to carry out channel search automatically, relate in particular to and a kind ofly utilize dual tuner can improve the television set with dual tuner of channel search efficient and utilize dual tuner to carry out channel searching method automatically.
Background technology
Common so-called television broadcasting is exactly that the transmission program that TV station receives is separated into picture signal, synchronizing signal, audio signal, and the process by loud speaker and display unit reproduced picture signal and audio signal.
The program that the user sees for audiovisual oneself hope normally after energized, utilizes the remote controller that is provided with on TV to select program.Present selection program method is that the user needn't select oneself to wish the program see usually one by one, but adopts the method for selecting channel automatically and setting required programs.People are referred to as the automatic channel search function having automatic selection channel and setting the required programs function.That is, the broadcast singal that does not receive is skipped, and only the signal that can receive is set to carry out automatically.Under this set state, if make up/down button selection television channel with remote controller, then at this moment, and because television system is set to the broadcast singal channel of a selective reception television setting, the channel that therefore easy selection oneself hope is seen.
Fig. 1 is the formation block diagram with traditional automatic channel search television set TV.
With reference to Fig. 1 as seen, the television set TV with traditional automatic channel search is made of following structure: the keyboard input part 10 that is provided with for keyboard input signal that connection/powered-down is provided and channel selection and menu key dish input signal; Carry out tuningly with the channel of the channel selection keyboard input signal that provides corresponding to keyboard input part, and, receive the tuner 12 that is provided with by antenna (ANT) the relevant channel TV signal that TV station transmits; By picture signal and the audio signal that has been received by tuning channel, carry out after the demodulation process to exporting the intermediate-frequency circuit portion 13 that is provided with separately to broadcast program; For making from the Audio Signal Processing of intermediate-frequency circuit portion 13 outputs is the Audio Signal Processing portion 16 that the reproducing audio signal is provided with; After amplifying by certain level from the audio signal of Audio Signal Processing portion 16 output, for finally exporting the audio output part 17 that is provided with; The picture signal of exporting after by demodulation in intermediate-frequency circuit portion 13 is treated to the vision signal handling part 14 that can export and be provided with; Processed picture signal in vision signal handling part 14 shows on screen-picture and the video efferent 15 that is provided with.
And comprise: if allow inputting channels to select signals by keyboard input part 10, then to tuner 12 with selecteed channel for the tuning tuning control signal that provides is provided; If allow input automatic channel search signal, then tuner 12 from lowest order play highest order carry out tuning after, provide tuning control signal for receiving relevant channel broadcasting signal; In keyboard input part 10, if allow the input menu push button signalling, then for exporting the controller 11 that TV programme choice menus data are provided with for carrying out the automatic channel search function.
And comprise: the program choice menus data of slave controller 11 outputs, after in on-screen display menus OSD, handling, the on-screen display menus OSD handling part 20 that is provided with for the on-screen display menus OSD picture that will select shows in video efferent 15; In the signal that is received in the tuning in to channels by automatic channel search, for detecting the synchronization signal detection portion 18 that synchronizing signal is provided with.
Utilization have as the television set TV system conventional technology of above-mentioned formation to the automatic channel search method, describe as follows with reference to Fig. 1 and Fig. 2:
Fig. 2 is the workflow diagram to the automatic channel search method of conventional art.
At first, judge whether power supply connects (S101).Judged result, if the power supply of TV TV is switched on, then the user utilizes the connection of keyboard input part 10/close button to connect TV power supply, so by the former channel receiving broadcast signal of selecting, and by intermediate-frequency circuit portion 13, video/audio signal handling part (14,16), video/audio efferent (15,17) regeneration is to the broadcast program of relevant channel.
As above-mentioned, to the ongoing regenerative process of the broadcast program of a channel, the user is for carrying out automatic channel search, if select keyboard input part 10 menu key (S102), then control part 11 selects data to output to on-screen display menus OSD handling part 20 the various menus of TV programme; And on-screen display menus OSD handling part 20, the various menus of output are selected data from control part 11, after handling in on-screen display menus OSD, the on-screen display menus OSD picture of selecting are shown (S103) to video efferent 15.
As above-mentioned, in the various menus that are shown, control part 11 judges whether to have selected (S104) behind the automatic channel search by customer requirements, selected automatic channel search if be judged as, then provide tuning control signal, and play the upper channel from the most the next channel and carry out tuning in turn to tuner 12.
As above-mentioned, when each channel by carrying out in turn when tuning, detect by in the broadcast singal that is received by tuning channel whether synchronizing signal (S105) being arranged.That is, carry out the automatic channel search pattern.
Then,, detect synchronizing signal (S106), then can judge the broadcasting channel of this channel, and relevant channel is stored in (S107) in the memory 19 for reception TV TV broadcast singal to a channel if detect the result of synchronizing signal.On the contrary,, then can judge this channel, and detect the synchronizing signal of other channels when skipping relevant channel for not receive the broadcasting channel of TV TV broadcast singal if do not detect synchronizing signal to a channel.
In this way all channels are carried out the automatic channel search function, and the relevant channel of received broadcast singal is stored in the memory 19.
Then, control part 11 judges whether all channel automatic channel search functions are finished (S108).Finish if be judged as all channel automatic channel search functions, then remove automatic channel search pattern (S109).
As above-mentioned, traditional automatic channel search method is to utilize a tuner, begins to carry out channel search in turn till the upper channel from the most the next channel.Just because of this, utilize the channel searching method of a tuner to exist the problem of channel search overlong time.
Summary of the invention
The present invention is the method that the television set with dual tuner is provided and utilizes dual tuner to carry out channel search automatically in order to solve above-mentioned existing problems, and purpose is to utilize dual tuner can effectively carry out channel search.
The method that the present invention utilizes dual tuner to carry out channel search automatically is to be made of the following stage: the power connection of television set also divides in the specified channel scope, carries out the channel searching stage by dual tuner; In dual tuner in the searched channel frequence, the detected broadcast singal stage; Detected broadcast singal channel is carried out memory phase in memory; If all channels are all searched, then finish the ending phase of automatic channel search.
Above-mentioned in the channel search of dual tuner, one of them tuner is only to search for odd number channel; Another tuner is only to search for even number channel.
Above-mentioned in the channel search of dual tuner, one of them tuner is to search for till the channel in the middle of playing from the most the next channel; Another tuner is to search for till middle channel plays the upper channel.
Above-mentioned in the channel search of dual tuner, one of them tuner is that cable TV is carried out channel search; And another tuner is to carry out channel search to wireless.
Television set with dual tuner of the present invention is to be made of following structure: will be divided into prescribed limit to the broadcast singal that is received, and carry out tuning dual tuner; Dual tuner is received the picture signal of broadcasting and audio signal carry out the intermediate-frequency circuit portion that exports after the demodulation; The Audio Signal Processing portion of Audio Signal Processing from the output of intermediate-frequency circuit portion for regenerating; Amplify the audio output part of laggard line output from the audio signal process of Audio Signal Processing portion output; The picture signal of exporting after by demodulation in intermediate-frequency circuit portion is treated to and can carries out the video signal displayed handling part; The video efferent that processed picture signal shows with picture in the vision signal handling part; When carrying out automatic channel search, in by the signal that is received by tuning in to channels, detect the synchronization signal detection portion of synchronizing signal; The keyboard input part of channel selection and menu key input signal is provided; Dual tuner is divided into whole channels with prescribed limit after,, and be received the control part that the channel of broadcast singal is stored for receiving broadcast signal provides tuning control signal; Select data among on-screen display menus OSD, to handle the on-screen display menus OSD handling part that the back shows to the video efferent from the menu of control part output; The storage part of storage receiving broadcast signal channel.
Television set with dual tuner also comprises: if having only a receiving broadcast signal radio frequency terminal, and the internal distribution device that broadcast singal is distributed to separately tuner then.
Advantageous effect of the present invention: as above-mentioned, the present invention is owing to utilize dual tuner to carry out automatic channel search, has therefore improved channel search efficient, thereby has half effect of channel search time decreased.This is in having the advance TV TV system of many broadcasting channels, has the strong point of epoch-making minimizing automatic channel search time.
Description of drawings
Fig. 1 is that the television set TV of traditional automatic channel search constitutes block diagram.
Fig. 2 is the workflow diagram to TV TV automatic channel search method of conventional art.
Fig. 3 is the dual tuner TV TV formation block diagram that has of the present invention.
Fig. 4 is an automatic channel search method flow diagram of the present invention.
" to accompanying drawing major part symbol description "
10: keyboard input part; 11: control part; 12: tuner;
13: intermediate-frequency circuit portion; 14: vision signal handling part 15: the video efferent;
16: Audio Signal Processing portion; 17: audio output part; 18: synchronization signal detection portion;
19: storage part; 20: on-screen display menus OSD handling part; 59: the internal distribution device;
60: the 1 tuners; 61: the 2 tuners; 63: control part;
64: intermediate-frequency circuit portion; 65: Audio Signal Processing portion; 66: audio output part;
67: the vision signal handling part; 68: the video efferent; 69: synchronization signal detection portion;
70: on-screen display menus OSD handling part; 71: storage part.
Embodiment
Following with reference to accompanying drawing, the present invention is had the television set of dual tuner and utilizes dual tuner automatic channel search method at length to describe.
Fig. 3 is the television set formation block diagram that the present invention has dual tuner.
With reference to Fig. 3 as seen, to have the television set of dual tuner be to be made of following structure in the present invention: will carry out tuning dual tuner (60,61) by antenna or wired broadcast singal that receives; The picture signal of the broadcasting that received by dual tuner (60,61) and audio signal carried out the intermediate-frequency circuit portion 64 that exports after the demodulation; The Audio Signal Processing portion 65 of Audio Signal Processing from 64 outputs of intermediate-frequency circuit portion for regenerating; Amplify the audio output part 66 of laggard line output from the audio signal process of Audio Signal Processing portion 65 outputs; The picture signal of exporting after by demodulation in intermediate-frequency circuit portion 64 is treated to and can carries out video signal displayed handling part 67; The video efferent 68 that processed picture signal shows with picture in vision signal handling part 67; When carrying out automatic channel search, in the signal that is received by tuning in to channels, detect the synchronization signal detection portion 69 of synchronizing signal; The keyboard input part 62 of channel selection and menu key input signal is provided; If allow inputting channels to select signals by keyboard input part 62, then to dual tuner (60,61) with selecteed channel for the tuning tuning control signal that provides is provided; If allow input automatic channel search signal, then dual tuner (60,61) from the most the next play be divided into till the highest order assigned frequency channel carry out tuning after, provide tuning control signal for receiving relevant channel broadcasting signal; In keyboard input part 62, for carrying out the automatic channel search function, if allow the input menu push button signalling, then for exporting the controller 63 that TV programme choice menus data are provided with; After the menu of control part 63 outputs selects data to handle among on-screen display menus OSD, with the on-screen display menus OSD handling part 70 of selecting on-screen display menus OSD picture to show to video efferent 68.
Be described in more detail, dual tuner (60,61) if allow input automatic channel search signal, then can carry out the assigned frequency scope tuningly again, and for example, the 1st tuner 60 carries out channel search from the most the next; And the 2nd tuner 61 begins to the next channel search from upper.And, the 1st tuner 60 can set only tuning odd number channel (1,3,5 ...), and the 2nd tuner 61 can be set only tuning even number channel (2,4,6 ...).
As another example, can the specified channel hunting zone to each self-tuner, for example,, can set as the 1st tuner 60 1～62 channel is searched for if cable TV is carried out channel search; And the 2nd tuner 61 can set 63～125 channels and carry out, and then can be searched for effect effectively.
As another example, the 1st tuner 60 can be set at the cable television channels search; And the 2nd tuner 61 can be set at the radiovision channel search.
If it is tuning to utilize dual tuner to carry out, then in synchronization signal detection portion 69, detect the synchronizing signal that has or not by being received by tuning in to channels.If the synchronizing signal of having detected can be judged that then this channel is the receiving broadcast signal channel, and by control part 63 relevant channel is stored in the storage part 71.
As above-mentioned, if utilize dual tuner, and have only a radio frequency, then can make tuner (60,61) separately carry out channel search by internal distribution device 59; If the wired and wireless input terminal that has radio frequency respectively, tuner (60,61) that then will be separately with can carry out channel search after radio frequency input terminal separately links to each other.As above-mentioned owing to utilize dual tuner to carry out channel search, so the channel search time can reduce half, thereby improved channel search efficient.
Fig. 4 is an automatic channel search method flow diagram of the present invention.
With reference to Fig. 4 as seen, the user is provided with automatic channel search (S200) (S210) under the TV power supply on-state.At this moment, automatic channel search is imported button by menu data, and selects situation can carry out automatic channel search according to the user.TV set power allows to connect and can form channel search automatically by the program device simultaneously.
In case carry out automatic channel search, dual tuner carries out the channel frequency search separately.As an example, a tuner carries out channel search from the most the next channel to upper channel, and another tuner is searched for to the next channel from the upper channel.And the 1st tuner 60 can be set at only tuning odd number channel (1,3,5 ...), and the 2nd tuner 61 also can be set at and only carries out even number channel (2,4,6 ...).As another example, can the specified channel hunting zone to each self-tuner, for example,, can set as the 1st tuner 60 1～62 channel is searched for if cable TV is carried out channel search; And the 2nd tuner 61 can set 63～125 channels and search for, and then can be searched for effect effectively.As another example, the 1st tuner 60 can be set at the cable television channels search; And the 2nd tuner 61 can be set at radiovision channel search (S220).
Tuner separately is in the channel search process, if the synchronizing signal of detecting (S230) is then discerned the back with the received channel of broadcast singal and in storage part relevant channel stored (S240).
Then, if search finishes in all channels, then finish automatic channel search (S250).
Claims (6)
1, the method for utilizing dual tuner to carry out channel search automatically is characterized in that it being to be made of the following stage:
TV set power allows to connect and divide in the specified channel scope, carries out the channel searching stage by dual tuner;
In dual tuner, in the searched channel frequence, detect the broadcast singal stage;
Detected broadcast singal channel is carried out memory phase in memory;
If all channels are all searched, then finish the ending phase of automatic channel search.
2, the method for utilizing dual tuner to carry out channel search automatically according to claim 1 is characterized in that in the channel search of dual tuner, and one of them tuner is only to search for odd number channel; Another tuner is only to search for even number channel.
3, the method for utilizing dual tuner to carry out channel search automatically according to claim 1 is characterized in that in the channel search of dual tuner, and one of them tuner is to search for till the channel in the middle of playing from the most the next channel; Another tuner is to search for till middle channel plays the upper channel.
4, the method for utilizing dual tuner to carry out channel search automatically according to claim 1 is characterized in that in the channel search of dual tuner, and one of them tuner is that cable TV is carried out channel search; And another tuner is to carry out channel search to wireless.
5, the television set that has dual tuner is characterized in that it being to be made of following structure:
To be divided into prescribed limit to the broadcast singal that receives, and carry out tuning dual tuner;
Dual tuner is received the picture signal of broadcasting and audio signal carry out the intermediate-frequency circuit portion that exports after the demodulation;
The Audio Signal Processing portion of Audio Signal Processing from the output of intermediate-frequency circuit portion for regenerating;
Amplify the audio output part of laggard line output from the audio signal process of Audio Signal Processing portion output;
The picture signal of exporting after by demodulation in intermediate-frequency circuit portion is treated to and can carries out the video signal displayed handling part;
The video efferent that processed picture signal shows with picture in the vision signal handling part;
When carrying out automatic channel search, in by the signal that is received by tuning in to channels, detect the synchronization signal detection portion of synchronizing signal;
The keyboard input part of channel selection and menu key input signal is provided;
Dual tuner is divided into whole channels with prescribed limit after, for receiving broadcast signal provides tuning control signal, and the control part stored of received broadcast singal channel;
Select data on-screen display menus, to handle the on-screen display menus handling part that the back shows to the video efferent from the menu of control part output;
The storage part of storage receiving broadcast signal channel.
6, the television set with dual tuner according to claim 5 is characterized in that also comprising following structure: if having only a receiving broadcast signal radio-frequency terminals, and the internal distribution device that broadcast singal is distributed to separately tuner then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020715 CN1708111A (en) | 2004-06-10 | 2004-06-10 | TV set with double-tuner and method for automatic searching channel utilizing double-tuner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410020715 CN1708111A (en) | 2004-06-10 | 2004-06-10 | TV set with double-tuner and method for automatic searching channel utilizing double-tuner |
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| CN1708111A true CN1708111A (en) | 2005-12-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055930A (en) * | 2010-12-09 | 2011-05-11 | 深圳Tcl新技术有限公司 | Multi-signal simultaneous searching device and method |
| CN102118591A (en) * | 2009-12-15 | 2011-07-06 | 巴比禄股份有限公司 | Digital broadcast receiver and method for receiving digital broadcast |
| CN104052948A (en) * | 2013-03-15 | 2014-09-17 | 索尼公司 | Reception apparatus and electronic equipment |
| CN108076366A (en) * | 2017-09-20 | 2018-05-25 | 李�荣 | Multi-functional dual tuner set-top box |
-
2004
- 2004-06-10 CN CN 200410020715 patent/CN1708111A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118591A (en) * | 2009-12-15 | 2011-07-06 | 巴比禄股份有限公司 | Digital broadcast receiver and method for receiving digital broadcast |
| CN102118591B (en) * | 2009-12-15 | 2013-08-21 | 巴法络股份有限公司 | Digital broadcast receiver and method for receiving digital broadcast |
| CN102055930A (en) * | 2010-12-09 | 2011-05-11 | 深圳Tcl新技术有限公司 | Multi-signal simultaneous searching device and method |
| CN104052948A (en) * | 2013-03-15 | 2014-09-17 | 索尼公司 | Reception apparatus and electronic equipment |
| CN104052948B (en) * | 2013-03-15 | 2017-10-31 | 索尼公司 | Reception device and electronic equipment |
| CN108076366A (en) * | 2017-09-20 | 2018-05-25 | 李�荣 | Multi-functional dual tuner set-top box |
| CN108076366B (en) * | 2017-09-20 | 2019-12-06 | 深圳市凯利华电子有限公司 | multifunctional double-tuner set-top box |
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Owner name: NANJING LG XINGANG DISPLAY CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS (SHENYANG) CO., LTD. Effective date: 20070427 |
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Effective date of registration: 20070427 Address after: 210038 No. 346 Yao Yao Avenue, Nanjing economic and Technological Development Zone, Jiangsu, China Applicant after: LG Electronics Nanjing Display Co., Ltd. Address before: 110179 35,40, hi tech Development Zone, Liaoning, Shenyang Applicant before: LG Electronic (Shenyang) Co., Ltd. |
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