CN102055930A - Multi-signal simultaneous searching device and method - Google Patents
Multi-signal simultaneous searching device and method Download PDFInfo
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- CN102055930A CN102055930A CN2010105816662A CN201010581666A CN102055930A CN 102055930 A CN102055930 A CN 102055930A CN 2010105816662 A CN2010105816662 A CN 2010105816662A CN 201010581666 A CN201010581666 A CN 201010581666A CN 102055930 A CN102055930 A CN 102055930A
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Abstract
The invention relates to a multi-signal simultaneous searching device and method, belonging to the technical field of multimedia. The multi-signal simultaneous searching device comprises a remote control signal receiving module and a main control chip, wherein the remote control signal receiving module is used for receiving remote control signals sent by a remote controller and for transmitting the remote control signals to the main control chip; the main control chip is used for receiving the remote control signals send by the remote control signal receiving module; the multi-signal simultaneous searching device is characterized by also comprising at least one signal receiving radio-frequency head and at least one channel demodulator, wherein the signal receiving radio-frequency head simultaneously receives signals, converts the received signals into baseband signals, and transmits the converted baseband signals to the corresponding channel demodulation module; and the channel demodulation module converts the baseband signals into transmission code stream to be output, and transmits the transmission code stream to the main control chip. The invention has the beneficial effect that a plurality of signals are simultaneously searched, and time for searching the plurality of signals is equal to that for searching one signal, thereby greatly reducing the searching time and improving the user experience.
Description
Technical field
The invention belongs to multimedia technology field, relate in particular to the device and method that a kind of multiple signals are searched platform simultaneously.
Background technology
At present, the part TV has a plurality of tuners, in order to support the multiplex broadcasting format signal, for example is used for supporting simultaneously the all-in-one of satellite-signal (DVB-S) and ground wire signal (DVB-T).In the prior art, the user when searching platform, need finish the search of ground wire signal earlier after, carry out the search of satellite-signal again, and can't realize the function that multiple signal is searched for simultaneously.Usually search ground wire signal and search of satellite signals each need 20 minutes consuming time, that is to say to finish and search platform and need 40 minutes altogether that concerning the user, searching platform oversize meeting consuming time influence the user and watch, and reduces user's experience greatly.
Summary of the invention
The object of the present invention is to provide a kind of multiple signals to search the method and the device of platform simultaneously, be intended to solve in the prior art, cause the problem that the platform long user of influence consuming time watches of searching owing to can't realize multiple signal and search for simultaneously.
The present invention realizes like this, a kind of multiple signals are searched the device of platform simultaneously, comprise remote control signal receiving module, the master control chip, at least one signal receives tuner and at least one channel demodulator, described remote control signal receiving module is used to receive the remote signal that remote controller sends, and this remote signal is transferred to the master control chip, described master control chip is used to receive the remote signal that remote control signal receiving module sends, described signal receives tuner received signal simultaneously, with the conversion of signals that receives is baseband signal, and the baseband signal after will changing transfers to corresponding channel demodulation module, described channel demodulation module converts baseband signal to transmission code stream output, and transmission code stream is transported to the master control chip.
Technical scheme of the present invention also comprises: described at least one signal receives tuner and comprises that wired reception tuner and satellite receive tuner, described wired reception tuner is used to receive wire signal, the wire signal that receives is converted to baseband signal, described satellite receives tuner and is used to receive the intermediate-freuqncy signal that satellite receives the pot transmission, and the intermediate-freuqncy signal that receives is converted to baseband signal.
Technical scheme of the present invention also comprises: described at least one channel demodulation module comprises the first channel demodulation module and second channel demodulation module, described first channel demodulation module and second channel demodulation module are respectively applied for and receive wired reception tuner and receive the baseband signal that tuner sends with satellite, finish after receiving baseband signal that automatic gain is controlled, the PN frame head is caught, channel estimation and equalization, Auto-Sensing and frequency locking and FFT conversion.
Another technical scheme that the present invention takes is: a kind of multiple signals are searched the method for platform simultaneously, may further comprise the steps:
Step a: open and search the platform menu, the signal type that selection need be searched for;
Step b: judge whether the user selects multiple signals simultaneously, if the user selects multiple signals type, execution in step c simultaneously;
Step c: activate multiple signals simultaneously and search the platform module accordingly and search platform.
Technical scheme of the present invention also comprises: in described step a, described signal type comprises wire signal and satellite-signal.
Technical scheme of the present invention also comprises: in described step b, if the user selects the individual signals type, then the individual signals type of selecting according to the user platform module of searching that activates the corresponding signal type is searched platform.
Technical scheme of the present invention also comprises: also comprise among the described step c: activation signal receives tuner; Set the tuner scanning frequency, behind the tuner lock-on signal, be converted to baseband signal and be transferred to the channel demodulation module.
Technical scheme of the present invention also comprises: in described step c, signal receives tuner and comprises that wired reception tuner and satellite receive tuner.
Technical scheme of the present invention also comprises: described step c also comprises: channel modulator need to judge whether locking signal, and locking signal is is then intercepted and captured corresponding channel signals and stored if desired, and shows the number of channels that searches; If do not need locking signal, then change the tuner scanning frequency and proceed to search platform.
Technical scheme of the present invention also comprises: described step c also comprises: judge whether the tuner scanning frequency is last frequency, if last frequency then finishes this and searches platform; If not last frequency, then change the tuner scanning frequency and proceed search.
Technical scheme of the present invention has following advantage or beneficial effect: multiple signals of the present invention are searched the search of the device and method of platform at the wire signal of face simultaneously that carries out the satellite-signal search simultaneously, the time of searching for a plurality of signals is identical with the search time that individual signals spent, reduce the time of searching platform greatly, improve user's experience.
Description of drawings
Accompanying drawing 1 is the structural representation that multiple signals of the present invention are searched the device of platform simultaneously;
Accompanying drawing 2 is fundamental diagrams that multiple signals of the present invention are searched the device of platform simultaneously;
Accompanying drawing 3 be multiple signals of the present invention search table apparatus simultaneously search platform menu schematic diagram;
Accompanying drawing 4 is schematic flow sheets that multiple signals of the present invention are searched the method for platform simultaneously;
Accompanying drawing 5 is the platform process of searching schematic diagrames of the multiple signals of the present invention method of searching platform simultaneously.
Embodiment
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.
Seeing also Fig. 1, is the structural representation that multiple signals of the present invention are searched the device of platform simultaneously.The device that multiple signals of the present invention are searched platform simultaneously comprises that remote control signal receiving module, master control chip (MCU), wired reception (DVB-C) tuner, satellite receive (DVB-S) tuner, the first channel demodulation module and second channel demodulation module.
Remote control signal receiving module is used to receive the remote signal that remote controller sends, and this remote signal is transferred to the master control chip.In embodiments of the present invention, remote control signal receiving module also is used to open and setup menu, activates and searches platform module etc.
The master control chip is used to receive the remote signal that remote control signal receiving module sends, and carries out choice menus, activates operations such as searching the platform module for the user.In embodiments of the present invention, the master control chip also is used for the relevant frequency point parameters of parallel convey and gives different tuners, and TS (the Transport Stream that the channel demodulation module is fed back to, transport stream) code stream is decoded and demultiplexing, and intercept and capture corresponding channel information and store, finish and deposit the platform operation.
Wired reception tuner is used to receive wire signal, and the wire signal that receives is converted to baseband signal, and the baseband signal after will changing transfers to the first channel demodulation module.
Satellite receives tuner and is used to receive the intermediate-freuqncy signal that satellite receives the pot transmission, the intermediate-freuqncy signal that receives is converted to baseband signal, and the baseband signal after will changing transfers to the second channel demodulator module, sends instructions to satellite simultaneously and receives pot, receives a pot parameter to change satellite.
The first channel demodulation module and second channel demodulation module are respectively applied for the baseband signal that receives wired reception tuner and the transmission of satellite reception tuner, and finish after receiving baseband signal that automatic gain control, PN frame head are caught, channel estimation and equalization, Auto-Sensing and frequency locking, FFT conversion etc., again baseband signal is converted to the output of TS code stream, and the TS code stream is transported to the master control chip.
Seeing also Fig. 2, is the fundamental diagram that multiple signals of the present invention are searched the device of platform simultaneously.The operation principle that multiple signals of the present invention are searched the device of platform simultaneously is: the user opens by remote control signal receiving module and searches the platform menu, choose the antenna system (Antenna type) that to search for, antenna system is listed the broadcast singal of wired (Cable), satellite TV such as (Satellite) support with tabular form, see also Fig. 3, Fig. 3 be multiple signals of the present invention search table apparatus simultaneously search platform menu schematic diagram; Finish choose after, enter and search the platform module accordingly; After wired reception (DVB-C) tuner, satellite reception (DVB-S) tuner are activated respectively, set the tuner scanning frequency; Behind the tuner lock-on signal, be converted to baseband signal and give the channel demodulation module, the channel demodulation module need to judge whether locking, if desired locking, signal is demodulated into TS stream, and being transferred to the master control chip, the master control chip is decoded and demultiplexing, and intercepts and captures corresponding channel information storage, finish and deposit the platform operation, and show the number of channels that searches, if need not lock, then change the tuner scanning frequency and proceed search; Judge whether the tuner scanning frequency is last frequency,,, then change the tuner scanning frequency and proceed search if not last frequency if last frequency then finishes to search platform.
Seeing also Fig. 4, is the schematic flow sheet that multiple signals of the present invention are searched the method for platform simultaneously.The method that multiple signals of the present invention are searched platform simultaneously may further comprise the steps:
Step 10: the user opens and searches the platform menu, the antenna system that selection need be searched for;
Wherein, the user can search the platform menu by the remote control signal receiving module setting, antenna system is listed with tabular form, comprise the broadcast singal type that TVs such as wire signal, satellite-signal are supported, the user can select the individual antenna kind to search for, also can select a plurality of antenna systems to search for simultaneously simultaneously, in the embodiment of the invention, antenna system comprises two types on wired and satellite.
Step 20: judge whether the user selects wire signal and satellite-signal simultaneously, if the user selects individual signals, execution in step 30, if the user selects wire signal and satellite-signal simultaneously, execution in step 40;
Step 30: the individual signals of selecting according to the user activates the platform module of searching of corresponding signal and searches platform, and execution in step 50 then;
In step 30, meeting is presented at the OSD menu with searching platform quantity and searching the platform progress of corresponding signal, in embodiments of the present invention, search the platform module and comprise and wiredly search the platform module and satellite is searched the platform module, wherein, wired platform module of searching is wired reception tuner, it is that satellite receives tuner that satellite is searched the platform module, if the user selects wire signal, then activates wired reception tuner, if the user selects satellite-signal, then activate satellite and receive tuner.
Step 40: activate wired platform module and satellite searched simultaneously and search the platform module and search platform, execution in step 50 then;
In step 40, can be with the searching platform quantity and search the platform progress and be presented at the OSD menu of corresponding signal type, specifically as shown in Figure 5, be the platform process of the searching schematic diagram of the multiple signals of the present invention method of searching platform simultaneously.
Step 50: set the tuner scanning frequency, behind the tuner lock-on signal, be converted to baseband signal and be transferred to the channel demodulation module;
In this step, if the user selects wire signal, then set wired reception tuner scanning frequency and receive wire signal, if the user selects satellite-signal, then set satellite and receive tuner scanning frequency and receiving satellite signal, if the user selects wire signal and satellite-signal simultaneously, then set wired reception tuner and satellite reception tuner scanning frequency simultaneously and receive wire signal and satellite-signal respectively; Wired reception tuner is converted to baseband signal with the wire signal that receives, and baseband signal is transferred to the first channel demodulation module; Satellite receives tuner the intermediate-freuqncy signal that receives is converted to baseband signal, and baseband signal is transferred to the second channel demodulation module, sends instruction simultaneously and receives pot to satellite, receives the pot parameter to change satellite;
Step 60: the channel demodulation module need to judge whether locking signal, locking signal if desired, and execution in step 70 is not if need locking signal, execution in step 80;
Wherein, the first channel demodulation module is used to receive the baseband signal of wired reception tuner transmission, the second channel adjustment module is used to receive the baseband signal that satellite receives the tuner transmission, the first channel demodulation module and second channel adjustment module receive and finish that automatic gain control, PN frame head are caught after the baseband signal respectively, channel estimation and equalization, Auto-Sensing and frequency locking, FFT conversion etc., again baseband signal is converted to the output of TS code stream, and the TS code stream is transported to master controller.
Step 70: intercept and capture corresponding channel signals and store, and show the number of channels that searches;
In this step, the master control chip is decoded and demultiplexing to the TS code stream that channel demodulator feeds back to, and intercepts and captures corresponding channel information and store, and finishes and deposits the platform operation.
Step 80: change the tuner scanning frequency, and return step 50;
Step 90: judge whether the tuner scanning frequency is last frequency, if last frequency, execution in step 100 if not last frequency, then re-executes step 50;
Step 100: finish this and search platform.
Multiple signals of the present invention are searched the device and method of platform simultaneously by multiplex broadcasting signal choice menus is provided, allow the user select the broadcast singal of current connection, for example the user selects Cable (wire signal) and Satellite (satellite-signal) search, search the platform module accordingly according to the broadcast singal activation that the user selects, make a plurality of different platform modules of searching work simultaneously, shorten the time that a plurality of signals are searched platform with the mode of searching for a plurality of signals simultaneously, thereby improve user's experience.
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. multiple signals are searched the device of platform simultaneously, comprise remote control signal receiving module and master control chip, described remote control signal receiving module is used to receive the remote signal that remote controller sends, and described remote signal is transferred to the master control chip, described master control chip is used to receive the remote signal that remote control signal receiving module sends, it is characterized in that, comprise that also at least one signal receives tuner and at least one channel demodulator, described signal receives tuner received signal simultaneously, with the conversion of signals that receives is baseband signal, and the baseband signal after will changing transfers to corresponding channel demodulation module, described channel demodulation module converts baseband signal to transmission code stream output, and transmission code stream is transported to the master control chip.
2. multiple signals according to claim 1 are searched the device of platform simultaneously, it is characterized in that, described at least one signal receives tuner and comprises that wired reception tuner and satellite receive tuner, described wired reception tuner is used to receive wire signal, the wire signal that receives is converted to baseband signal, described satellite receives tuner and is used to receive the intermediate-freuqncy signal that satellite receives the pot transmission, and the intermediate-freuqncy signal that receives is converted to baseband signal.
3. multiple signals according to claim 2 are searched the device of platform simultaneously, it is characterized in that, described at least one channel demodulation module comprises the first channel demodulation module and second channel demodulation module, described first channel demodulation module and second channel demodulation module are respectively applied for and receive wired reception tuner and receive the baseband signal that tuner sends with satellite, finish after receiving baseband signal that automatic gain is controlled, the PN frame head is caught, channel estimation and equalization, Auto-Sensing and frequency locking and FFT conversion.
4. method that multiple signals are searched platform simultaneously may further comprise the steps:
Step a: open and search the platform menu, the signal type that selection need be searched for;
Step b: judge whether the user selects multiple signals simultaneously, if the user selects multiple signals, execution in step c simultaneously;
Step c: activate multiple signals simultaneously and search the platform module accordingly and search platform.
5. multiple signals according to claim 4 are searched the method for platform simultaneously, it is characterized in that, in described step a, described signal type comprises wire signal and satellite-signal.
6. the method for searching platform simultaneously according to claim 4 or 5 described multiple signals, it is characterized in that, in described step b, if the user selects the individual signals type, then the individual signals type of selecting according to the user platform module of searching that activates the corresponding signal type is searched platform.
7. multiple signals according to claim 4 are searched the method for platform simultaneously, it is characterized in that, also comprise among the described step c: activation signal receives tuner, sets the tuner scanning frequency, behind the tuner lock-on signal, be converted to baseband signal and be transferred to the channel demodulation module.
8. multiple signals according to claim 7 are searched the method for platform simultaneously, it is characterized in that, in described step c, described signal receives tuner and comprises that wired reception tuner and satellite receive tuner.
9. the method for searching platform simultaneously according to claim 7 or 8 described multiple signals, it is characterized in that described step c also comprises: channel modulator need to judge whether locking signal, locking signal if desired, then intercept and capture corresponding channel signals and store, and show the number of channels that searches; If do not need locking signal, then change the tuner scanning frequency and proceed to search platform.
10. multiple signals according to claim 9 are searched the method for platform simultaneously, it is characterized in that, described step c also comprises: judge whether the tuner scanning frequency is last frequency, if last frequency then finishes this and searches platform; If not last frequency, then change the tuner scanning frequency and proceed search.
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| CN2010105816662A CN102055930A (en) | 2010-12-09 | 2010-12-09 | Multi-signal simultaneous searching device and method |
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| CN2010105816662A CN102055930A (en) | 2010-12-09 | 2010-12-09 | Multi-signal simultaneous searching device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108600830A (en) * | 2018-04-03 | 2018-09-28 | 青岛海信电器股份有限公司 | Channel search method, device and storage medium |
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| CN1890962A (en) * | 2003-12-22 | 2007-01-03 | 汤姆森特许公司 | Method and apparatus for performing selectable channel search |
| CN101651792A (en) * | 2008-08-13 | 2010-02-17 | 深圳Tcl新技术有限公司 | Digital television all-in-one machine and method for searching channels |
| CN101695111A (en) * | 2009-10-27 | 2010-04-14 | 康佳集团股份有限公司 | Channel selecting device and method of television with double-antennae input port |
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2010
- 2010-12-09 CN CN2010105816662A patent/CN102055930A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1890962A (en) * | 2003-12-22 | 2007-01-03 | 汤姆森特许公司 | Method and apparatus for performing selectable channel search |
| CN1708111A (en) * | 2004-06-10 | 2005-12-14 | 乐金电子（沈阳）有限公司 | TV set with double-tuner and method for automatic searching channel utilizing double-tuner |
| CN101651792A (en) * | 2008-08-13 | 2010-02-17 | 深圳Tcl新技术有限公司 | Digital television all-in-one machine and method for searching channels |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108600830A (en) * | 2018-04-03 | 2018-09-28 | 青岛海信电器股份有限公司 | Channel search method, device and storage medium |
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Application publication date: 20110511 |