CN109474794A - A kind of video source switching chip, device and switching method - Google Patents
A kind of video source switching chip, device and switching method Download PDFInfo
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- CN109474794A CN109474794A CN201811302224.2A CN201811302224A CN109474794A CN 109474794 A CN109474794 A CN 109474794A CN 201811302224 A CN201811302224 A CN 201811302224A CN 109474794 A CN109474794 A CN 109474794A
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/42212—Specific keyboard arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/42221—Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/42225—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details characterized by types of remote control, e.g. universal remote control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
Abstract
The invention discloses a kind of video sources to switch chip, in device and switching method, the chip includes the infrared receiving module for the code shape and code value that receive the key set code for the key that remote controler is pressed, for analyze the key set code for the key that remote controler is pressed code shape and code value and be saved to FLASH chip infrared command study and memory module, and code shape for importing FLASH chip storage and code value and generate multiple video source command tables and selection word corresponding with video source command table, and for parsing the bid value and the video source and order switching module for controlling corresponding video source that remote controler is sent.The present invention switches chip by design video source, each television set is allowed to share multiple video sources, television set is without specially matching video source, and each viewer can manipulate multiple video sources by a TV remote controller, have many advantages, such as video source it is diversified, it is at low cost, manipulated without wiring, list remote controler.
Description
Technical field
The present invention relates to video source and TV technology, in particular to a kind of video source switches chip, device and cuts
Change method.
Background technique
It has been homely food that Modern Family, which possesses multiple TV set, such as parlor has TV, bedroom to have TV or even kitchen
Or also there is TV in toilet.In general, every television set is all at least configured with a video source, and general video source includes: to have
Line TV box, webtv box, DVD player, satellite receiver box etc., but the family for possessing multiple TV set or go out
Room is rented, if each television set is all equipped with several video sources simultaneously, i.e. occupied space causes very large resource waste, Er Qiexu again
It to be respectively controlled using multiple remote controlers, it is very inconvenient, such as existing television set shown in FIG. 1 specially matches multiple video sources
Schematic diagram comprising various video sources, multiple remote controlers and television set, each video source have respective remote controler, electricity
Also there is respective remote controler depending on machine, there is the disadvantages of occupying complicated excessive space, line, inconvenient for use, waste of resource.
Thus the prior art could be improved and improve.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of video source switching chips, dress
It sets and switching method is, it can be achieved that can manipulate multiple video sources by a remote controler, reduce the waste of resource.
In order to achieve the above object, this invention takes following technical schemes:
A kind of video source switching chip, connect with FLASH chip, and the video source switching chip includes at least:
Infrared receiving module, for receiving the code shape and code value of the key set code for the key that remote controler is pressed；
Infrared command study and memory module, for analyze the key set code for the key that remote controler is pressed code shape and code value and by its
It saves to FLASH chip；And
Video source and order switching module, for importing the code shape of FLASH chip storage and code value and generating multiple video sources life
It enables table and selection word corresponding with video source command table, and the bid value for parsing remote controler transmission and controls corresponding
Video source；
Wherein, the infrared receiving module connects the infrared command study and memory module, and the infrared command learns and deposits
Storage module and video source and order switching module are connect with FLASH chip.
In the video source switching chip, the video source and order switching module include:
Decoder, for parsing the bid value of remote controler transmission and generating selection word and command word；
Command word transmission unit sends out command word for the selection word and command word of receiver decoder parsing, and according to selection word
It send to video source corresponding with selection word and order switch unit；
Several video sources and order switch unit, for importing the code shape of FLASH chip storage and code value and generating video source
Command table and selection word corresponding with video source command table, and receive the command word that command word transmission unit is sent, and root
The corresponding order of command word is obtained according to video source command table；
Several infrared emission units, it is corresponding for the order of corresponding video source and order switch unit to be sent to
Video source.
In the video source switching chip, the quantity phase of the quantity and video source of the video source and order switch unit
Together.
A kind of video source switching device, connect with multiple TV set, and the video source switching device includes several videos
Source, several HDMI electric power demodulators, several HDMI modulated power converters, several remote controlers, power line, FLASH chip with
And video source as described above switches chip, several described remote controlers are connect with a TV remote-control respectively, each television set
A HDMI electric power demodulator, power line, HDMI modulated power converter corresponding with HDMI electric power demodulator connection are passed sequentially through respectively
Video source switches chip, and the video source switching chip connects several video sources and FLASH chip.
In the video source switching device, the HDMI modulated power converter and the HDMI electric power demodulator are set in pairs
It sets.
In the video source switching device, priority is provided between each motor machine.
A kind of video source switch method using video source switching device as described above, includes the following steps:
Remote controler sends bid value to television set；
Television set receives the bid value of remote controler and sends it to HDMI electric power demodulator, will be ordered by HDMI electric power demodulator
Value sends the HDMI modulated power converter matched with it to by power line after being modulated；
Modulated bid value is restored by HDMI modulated power converter and sends it to video source switching chip；
By video source switching chip parsing bid value and control corresponding video source.
In the video source switch method, the remote controler to television set send bid value the step of before also wrap
It includes:
The code shape and code value of the key set code for the key that remote controler is pressed are received by the infrared receiving module of video source switching chip, it is red
The code shape and code value of the key set code for the key that outer order study is pressed with memory module analysis remote controler are simultaneously saved to FLASH
Chip, and simultaneously by the code shape and code value of the video source of video source switching chip and the importing FLASH chip storage of order switching module
Generate multiple video source command tables and selection word corresponding with video source command table.
It is described that bid value is parsed by video source switching chip and controls corresponding video in the video source switch method
The step of source includes:
By decoder resolve command value and generate selection word and command word；
Command word is sent to by video source corresponding with selection word according to selection word by command word transmission unit and order switching is single
Member；
The command word that command word transmission unit is sent is received by corresponding video source and order switch unit, and is ordered according to video source
Table is enabled to obtain the corresponding order of command word；
Corresponding video source is sent commands to by infrared emission unit.
Compared to the prior art, in video source switching chip provided by the invention, device and switching method, the chip
The infrared receiving module of code shape and code value including the key set code for receiving the key that remote controler is pressed, for analyzing remote controler
The code shape and code value of the key set code for the key pressed and be saved to FLASH chip infrared command study with memory module,
And for import FLASH chip storage code shape and code value and generate multiple video source command tables and with video source command table
Corresponding selection word, and bid value for parsing remote controler transmission and control the video source of corresponding video source and order is cut
Change the mold block.The present invention switches chip by design video source, and each television set is allowed to share multiple video sources, television set without
Video source need to specially be matched, and each viewer can manipulate multiple video sources by a TV remote controller, there is video
The advantages that source is diversified, at low cost, without wiring, single remote controler manipulation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that existing television set specially matches multiple video sources.
Fig. 2 is the structural block diagram that video source provided by the invention switches chip.
Fig. 3 is that video source provided by the invention switches in chip, the structural block diagram of the video source and order switching module.
Fig. 4 is the structural block diagram of video source switching device provided by the invention.
Fig. 5 is the flow chart of video source switch method provided by the invention.
Fig. 6 is the flow chart of the step S400 in video source switch method provided by the invention.
Specific embodiment
The present invention provides a kind of video source switching chip, device and switching method, to make the purpose of the present invention, technical side
Case and effect are clearer, clear, and the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be appreciated that
Described herein specific examples are only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 2, video source provided by the invention switches chip, it is connect with FLASH chip 100, the video source is cut
Changing chip includes infrared receiving module 200, infrared command study and memory module 300 and video source and order switching module
400, wherein the infrared receiving module 200 connects the infrared command study and memory module 300, the infrared command
Habit is connect with FLASH chip 100 with memory module 300 and video source and order switching module 400.
Specifically, the infrared receiving module 200 be used for receive the key that remote controler is pressed key set code code shape and
Code value, and send it to infrared command study and memory module 300；The infrared command study is used for memory module 300
The code shape and code value of the key set code for the key that analysis remote controler is pressed simultaneously are saved to FLASH chip 100, since the present invention is logical
TV remote controller is crossed to manipulate all video sources, therefore needs that the common or all infrared command of each video source is learnt and protected
Deposit, in general, the key on telecontrol panel can be divided into 4 classes, i.e., digital keys, direction key, volume and channel key and
Special key (such as confirmation, return, menu, Broadcast Control), the present invention learn to learn with memory module 300 by setting infrared command
Practise each key of remote controler；The video source and order switching module 400 are used to import the code shape of the storage of FLASH chip 100
With code value and generate multiple video source command tables and selection word corresponding with video source command table, and for parsing remote controler
The bid value of transmission simultaneously controls corresponding video source, and in other words, the video source and order switching module generate video source life
Enable table, each video source command table is respectively remote keying and the command relationship table of a video source, remote controler after pressing the button,
Video source and order switching module find corresponding video source command table first, control accordingly after then parsing specific instructions
Video source, to achieve the purpose that manipulate multiple video sources by a TV remote controller.
Preferably, each video source command table is distinguished according to address, such as is followed successively by video source 1 by address incremental order and is ordered
Table, 2 command table of video source, 3 command table of video source, 4 command table of video source etc. are enabled, in addition, the FLASH chip 100 is one
Kind of storage chip, for store remote controler key set code code value and code shape.
Furthermore, it is understood that referring to Fig. 3, the video source and order switching module 400 include decoder 401, command word
Transmission unit 402, several video sources and order switch unit 403 and several infrared emission units 404, wherein described to translate
Code 401 bind command word transmission unit 402 of device, several video sources and order switch unit 403 are sent with the command word
Unit 402 connects, several video sources and order switch unit 403 are also all connected with the infrared emission unit 404.
Specifically, the decoder 401 is used to parse the bid value of remote controler transmission and generates selection word and command word,
I.e. when carrying out the calling of video source, the remote controler presses next key, sends a bid value to decoder 401, decoder 401
It is parsed and generates selection word and command word, wherein the video source that the selection word is used to judge to call, such as select
Word is 0 the first video source command table of selection, and infrared emission unit 404 is just only directed at the infrared receiver region of the first video source,
The working condition of the first video source can be only controlled, in this way, the experience of viewer is exactly the of the control distant place before television surface
One video source, the command word is for judging specifically to order, to realize the multiple video sources of remote control control；The life
It enables word transmission unit 402 for the selection word and command word of the parsing of receiver decoder 401, and is sent command word according to selection word
To video source corresponding with selection word and order switch unit 403；The video source and order switch unit 403 are for importing
The code shape and code value of the storage of FLASH chip 100 simultaneously generate video source command table and selection word corresponding with video source command table,
And the command word that command word transmission unit 402 is sent is received, and the corresponding order of command word is obtained according to video source command table,
In other words, when carrying out key study, the video source and order switch unit 403 generate video source command table, are carrying out
When video source is called, the video source and order switch unit 403 are used to find the corresponding specific instructions of command word, meanwhile, respectively
A video source and order switch unit 403 do not work at the same time, i.e., in the video source for needing that it is called to be controlled, just by command word
It is sent to the video source and order switch unit 403, to realize the purpose of the multiple video sources of remote control control；It is described
Infrared emission unit 404 is used for several infrared emission units, for by corresponding video source and order switch unit 403
Order be sent to corresponding video source, allow television set that video source to be called to work.
Preferably, the video source and the quantity of order switch unit 403 are identical as the quantity of video source, to reach
One video source and order switch unit 403 control the purpose of a video source.
It should be noted that video source switching chip of the present invention is using a kind of field-programmable chip
(fpga chip), the fpga chip just to have dispatched from the factory are " blank " chips, according to functional requirement, by " writing code, compiling generation
" recordable paper " is obtained after code ", then by download cable by after recordable paper write-in fpga chip, fpga chip, which is exactly one, spy
Determine the chip of function, it is reusable.Different files are downloaded, fpga chip realizes that function is just different, i.e., fpga chip is one
The chip that function can customize.
Referring to Fig. 4, switching chip based on above-mentioned video source, the present invention also correspondingly provides a kind of video source switching dress
It sets, is connect with multiple TV set 1, the video source switching device includes several video sources 2, several HDMI electric power demodulators
3, described in several HDMI modulated power converters 4, several remote controlers 5, power line 6, FLASH chip 100 and embodiment as above
Video source switch chip 7, wherein several described remote controlers 5 are remotely controlled with a television set 1 connect respectively, and each television set 1 divides
A HDMI electric power demodulator 3, power line 6, HDMI modulated power converter 4 corresponding with HDMI modulated power converter 3 is not passed sequentially through to connect
Video source switching chip 7 is connect, the video source switching chip 7 connects several video sources 2 and FLASH chip 100.
It is described in detail below in conjunction with the course of work of the Fig. 2 to Fig. 4 to video source switching device:
Step 1: needing first to learn remote controler before the calling for carrying out video source, first remote controler is carried out first
Study presses and needs the key that learns, infrared receiving module 200 receive the key set code for the key that remote controler is pressed code shape and
Code value, then infrared command learns the code shape for automatically analyzing key set code with memory module 300 and code value and is stored in FLASH chip
In 100, until save study in need key until；
Step 2: being learnt using another remote controler, the first step is repeated；
Step 3: study is completed after the completion of all remote controlers all learn storage；
Step 4: video source and order switching module 400 import these yard of shape and code value from FLASH chip, video source is formed
Command table is successively the first video source command table, the second video source command table, third video source order by address incremental order
Table ... ..；
Step 5: remote controler sends bid value to television set；
Step 6: television set receives the bid value of remote controler and sends it to HDMI modulated power converter 3, demodulated by HDMI electric power
Device 3 sends the HDMI modulated power converter 4 matched with it to by power line after being modulated bid value；
Step 7: modulated bid value is restored by HDMI modulated power converter 4 and sends it to video source switching chip 7；
Step 8: by 401 resolve command value of decoder and generating selection word and command word；
Step 9: by command word transmission unit 402 according to selection word by command word be sent to select the corresponding video source of word and
Order switch unit 403；
Step 10: the command word that command word transmission unit 402 is sent is received by corresponding video source and order switch unit 403,
And the corresponding order of command word is obtained according to video source command table；
Step 11: corresponding video source is sent commands to by infrared emission unit 404, to realize the control of video source
System.
Preferably, the HDMI electric power demodulator 3 and the HDMI modulated power converter 4 are arranged in pairs, and can transmit HDMI letter
Number and passback low rate control byte, transmitted by homeplug powerline after transmitting terminal HDMI signal modulation, receiving end, which passes through, matches
Pair electric power demodulator restore HDMI signal, power line transmission bandwidth for transmission be high definition rank signal.
Further, it is provided with priority between each television set, such as there are multiple viewers to manipulate same video source
When, it can be set to master bedroom television set highest priority, secondary room television set second, study television set third, kitchen or toilet
Television set priority it is minimum.
The present invention returns bid value when user's RTV remote television, order using pin spare in the HDMI interface of television set
Value is by decoding " selection word " and " command word ", according to " " selection video source, tables look-up according to " command word " and had selection word
Body order goes to control corresponding video source using infrared emission, so that each television set can share multiple video sources,
Television set is without specially matching video source, and each viewer can manipulate multiple video sources by a TV remote controller,
Have many advantages, such as video source it is diversified, it is at low cost, without wiring, the manipulation of single remote controler.
Referring to Fig. 5, being based on above-mentioned video source switching device, the present invention also correspondingly provides a kind of video source switching side
Method includes the following steps:
S100, remote controler send bid value to television set；
S200, television set receive the bid value of remote controler and send it to HDMI electric power demodulator, by HDMI electric power demodulator
Send the HDMI modulated power converter matched with it after bid value is modulated to by power line；
S300, modulated bid value is restored by HDMI modulated power converter and sends it to video source switching chip；
S400, bid value is parsed by video source switching chip and controls corresponding video source.
Preferably, before the step S100 further include:
The code shape and code value of the key set code for the key that remote controler is pressed are received by the infrared receiving module of video source switching chip, it is red
The code shape and code value of the key set code for the key that outer order study is pressed with memory module analysis remote controler are simultaneously saved to FLASH
Chip, and simultaneously by the code shape and code value of the video source of video source switching chip and the importing FLASH chip storage of order switching module
Generate multiple video source command tables and selection word corresponding with video source command table.
Preferably, referring to Fig. 6, the step S400 is specifically included:
S401, by decoder resolve command value and selection word and command word is generated；
S402, by command word transmission unit, according to selecting, command word is sent to video source corresponding with selection word by word and order is cut
Change unit；
S403, the command word that command word transmission unit is sent is received by corresponding video source and order switch unit, and according to view
Frequency source command table obtains the corresponding order of command word；
S404, corresponding video source is sent commands to by infrared emission unit.
Since video source switching device being described in detail above, details are not described herein.
In conclusion the chip includes using in video source switching chip provided by the invention, device and switching method
In the infrared receiving module for the code shape and code value for receiving the key set code of key that remote controler is pressed, press for analyzing remote controler
The code shape and code value of the key set code of key and the infrared command study and memory module, Yi Jiyong for being saved to FLASH chip
In the code shape and code value that import FLASH chip storage and generate multiple video source command tables and corresponding with video source command table
Word is selected, and the bid value for parsing remote controler transmission and the video source and order switching mould that control corresponding video source
Block.The present invention switches chip by design video source, allows each television set to share multiple video sources, television set is without special
With video source, and each viewer can manipulate multiple video sources by a TV remote controller, have video source more
Sample, it is at low cost, without wiring, the manipulation of single remote controler the advantages that.
It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (9)
1. a kind of video source switches chip, it is connect with FLASH chip, which is characterized in that the video source switching chip at least wraps
It includes:
Infrared receiving module, for receiving the code shape and code value of the key set code for the key that remote controler is pressed；
Infrared command study and memory module, for analyze the key set code for the key that remote controler is pressed code shape and code value and by its
It saves to FLASH chip；And
Video source and order switching module, for importing the code shape of FLASH chip storage and code value and generating multiple video sources life
It enables table and selection word corresponding with video source command table, and the bid value for parsing remote controler transmission and controls corresponding
Video source；
Wherein, the infrared receiving module connects the infrared command study and memory module, and the infrared command learns and deposits
Storage module and video source and order switching module are connect with FLASH chip.
2. video source according to claim 1 switches chip, which is characterized in that the video source and order switching module packet
It includes:
Decoder, for parsing the bid value of remote controler transmission and generating selection word and command word；
Command word transmission unit sends out command word for the selection word and command word of receiver decoder parsing, and according to selection word
It send to video source corresponding with selection word and order switch unit；
Several video sources and order switch unit, for importing the code shape of FLASH chip storage and code value and generating video source
Command table and selection word corresponding with video source command table, and receive the command word that command word transmission unit is sent, and root
The corresponding order of command word is obtained according to video source command table；
Several infrared emission units, it is corresponding for the order of corresponding video source and order switch unit to be sent to
Video source.
3. video source according to claim 2 switches chip, which is characterized in that the video source and order switch unit
Quantity is identical as the quantity of video source.
4. a kind of video source switching device, connect with multiple TV set, which is characterized in that if the video source switching device includes
A dry video source, several HDMI electric power demodulators, several HDMI modulated power converters, several remote controlers, power line,
FLASH chip and video source as claimed in any one of claims 1-3 switch chip, several described remote controlers respectively with
The connection of one TV remote-control, each television set pass sequentially through a HDMI electric power demodulator, power line respectively, demodulate with HDMI electric power
Device corresponding HDMI modulated power converter connection video source switches chip, the video source switching chip connect several video sources and
FLASH chip.
5. video source switching device according to claim 4, which is characterized in that the HDMI modulated power converter and described
HDMI electric power demodulator is arranged in pairs.
6. video source switching device according to claim 5, which is characterized in that be provided between each motor machine preferential
Grade.
7. a kind of video source switch method using video source switching device as claimed in claim 4, which is characterized in that including such as
Lower step:
Remote controler sends bid value to television set；
Television set receives the bid value of remote controler and sends it to HDMI electric power demodulator, will be ordered by HDMI electric power demodulator
Value sends the HDMI modulated power converter matched with it to by power line after being modulated；
Modulated bid value is restored by HDMI modulated power converter and sends it to video source switching chip；
By video source switching chip parsing bid value and control corresponding video source.
8. video source switch method according to claim 7, which is characterized in that the remote controler sends to television set and orders
Before the step of value further include:
The code shape and code value of the key set code for the key that remote controler is pressed are received by the infrared receiving module of video source switching chip, it is red
The code shape and code value of the key set code for the key that outer order study is pressed with memory module analysis remote controler are simultaneously saved to FLASH
Chip, and simultaneously by the code shape and code value of the video source of video source switching chip and the importing FLASH chip storage of order switching module
Generate multiple video source command tables and selection word corresponding with video source command table.
9. video source switch method according to claim 7, which is characterized in that described by video source switching chip parsing life
It enables value and includes: the step of controlling corresponding video source
By decoder resolve command value and generate selection word and command word；
Command word is sent to by video source corresponding with selection word according to selection word by command word transmission unit and order switching is single
Member；
The command word that command word transmission unit is sent is received by corresponding video source and order switch unit, and is ordered according to video source
Table is enabled to obtain the corresponding order of command word；
Corresponding video source is sent commands to by infrared emission unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302224.2A CN109474794A (en) | 2018-11-02 | 2018-11-02 | A kind of video source switching chip, device and switching method |
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| CN201811302224.2A CN109474794A (en) | 2018-11-02 | 2018-11-02 | A kind of video source switching chip, device and switching method |
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| CN109474794A true CN109474794A (en) | 2019-03-15 |
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| CN (1) | CN109474794A (en) |
Citations (4)
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| CN202771610U (en) * | 2012-08-31 | 2013-03-06 | 常州众研科技发展有限公司 | Learning type infrared remote control system of television switch |
| CN103686288A (en) * | 2013-12-20 | 2014-03-26 | 海信集团有限公司 | Television, television and infrared device control signal conversion method and television system |
| CN107872696A (en) * | 2016-09-27 | 2018-04-03 | 乐视控股（北京）有限公司 | The main control device and implementation method of intelligent television system |
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| US20120044428A1 (en) * | 2010-08-20 | 2012-02-23 | Mstar Semiconductor, Inc. | Playback Device and Associated Method |
| CN202771610U (en) * | 2012-08-31 | 2013-03-06 | 常州众研科技发展有限公司 | Learning type infrared remote control system of television switch |
| CN103686288A (en) * | 2013-12-20 | 2014-03-26 | 海信集团有限公司 | Television, television and infrared device control signal conversion method and television system |
| CN107872696A (en) * | 2016-09-27 | 2018-04-03 | 乐视控股（北京）有限公司 | The main control device and implementation method of intelligent television system |
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