CN104320701B - The switching method and device of signal source - Google Patents
The switching method and device of signal source Download PDFInfo
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- CN104320701B CN104320701B CN201410435950.7A CN201410435950A CN104320701B CN 104320701 B CN104320701 B CN 104320701B CN 201410435950 A CN201410435950 A CN 201410435950A CN 104320701 B CN104320701 B CN 104320701B
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- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
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- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
-
- 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
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
Abstract
The invention discloses a kind of switching method of signal source, the switching method of the signal source comprises the following steps：When detecting detection instruction, whether each signal source channels for detecting multimedia play equipment have signal input；Obtain the vision signal in the signal source channels for thering is signal to input；According to default caching rule, by acquired vision signal code cache to internal memory；When detecting signal source switching command, vision signal corresponding to the signal source channels after switching is read out from internal memory, and show vision signal.The invention also discloses a kind of switching device of signal source.The switching method and apparatus of the signal source of the present invention, signal source channels can faster show the image letter after switching when switching, vision when switching signal source channels are greatly reduced stops, and improves the visual effect of multimedia play equipment.
Description
Technical field
The present invention relates to the switching method and device of field of display devices, more particularly to signal source.
Background technology
Television set not only undertakes the use of television set amusement function itself as parlor recreation terminal at present, simultaneously because
Television set has multiple peripheral hardware signal ports, therefore television set is also the display terminal as various peripheral hardwares.With peripheral product
More and more, function is increasingly abundanter, and user's switching signal source also becomes frequent to play different video content.But current
Television set is required for the broadcasting process of signal source exited before switching, recalls the letter after switching in each switching signal source
The initialization data in number source, the video data of the signal source after switching is then just shown, so cause the handoff procedure of signal source
Slowly shown slowly with signal, stopped so as to form vision in switching signal source, cause poor visual effect.
The content of the invention
It is a primary object of the present invention to solve multimedia play equipment because switching signal source procedure slowly shows with signal
Show slow and cause the technical problem of poor visual effect.
To achieve the above object, the present invention provides a kind of switching method of signal source, the switching method bag of the signal source
Include following steps：
When detecting detection instruction, whether each signal source channels for detecting multimedia play equipment have signal input；
Obtain the vision signal in the signal source channels for thering is signal to input；
By the vision signal code cache in the acquired signal source channels for thering is signal to input to internal memory；
When detecting signal source switching command, read out from the internal memory and regarded corresponding to the signal source channels after switching
Frequency signal, and show the vision signal.
Preferably, before the step of vision signal during the acquisition has the signal source channels of signal input, the letter
The switching method in number source also includes：
The signal source channels for having signal to input are identified.
Preferably, the acquisition has the step of vision signal in the signal source channels that signal inputs to include：
Obtain the vision signal in preset duration in the signal source channels for thering is signal to input.
Preferably, the vision signal code cache by the acquired signal source channels for having signal to input is to internal memory
Step includes：
Vision signal in the acquired signal source channels for having signal to input is encoded；
Judge whether the vision signal after the coding and the vision signal being buffered in advance in internal memory are identical；
If the vision signal after the coding is identical with the vision signal being buffered in advance in internal memory, by the volume
Vision signal after code is deleted, and keeps the vision signal being buffered in advance in internal memory；
If the vision signal after the coding is different from the vision signal being buffered in advance in internal memory, by the volume
Vision signal after code replaces the vision signal being buffered in advance in internal memory.
Preferably, the detection instruction is instruction or the multimedia caused by multimedia play equipment timing
Instructed caused by instruction caused by device power-up or the triggering of signal source button.
In addition, to achieve the above object, the present invention also provides a kind of switching device of signal source, the switching of the signal source
Device includes：
Detection module, for when detecting detection instruction, detecting each signal source channels of multimedia play equipment to be
It is no to have signal input；
Acquisition module, for obtaining the vision signal in the signal source channels for thering is signal to input；
Cache module, for by the vision signal code cache in the acquired signal source channels for thering is signal to input to interior
Deposit；
Read module, for when detecting signal source switching command, reading out the signal after switching from the internal memory
Vision signal corresponding to source channels, and show the vision signal.
Preferably, the switching device of the signal source also includes：
Mark module, for being identified to the signal source channels for thering is signal to input.
Preferably, the acquisition module is additionally operable to obtain the video in the signal source channels for having signal to input in preset duration
Signal.
Preferably, the cache module includes：
Coding unit, for the vision signal in the acquired signal source channels for having signal to input to be encoded；
Judging unit, for judging whether are the vision signal after the coding and the vision signal that is buffered in advance in internal memory
It is identical；
Holding unit, for the vision signal after the coding and the vision signal phase being buffered in advance in internal memory
Together, then the vision signal after the coding is deleted, and keeps the vision signal being buffered in advance in internal memory；
Replacement unit, vision signal in internal memory is buffered in not in advance with described for the vision signal after the coding
Together, then the vision signal after the coding is replaced into the vision signal being buffered in advance in internal memory.
Preferably, instruction or the multimedia caused by the detection instruction or multimedia play equipment timing
Instructed caused by instruction caused by device power-up or the triggering of signal source button.
The switching method and apparatus of the signal source of the present invention, pass through each signal source channels to multimedia play equipment
The detection of signal input state (being inputted with/without signal), and in the signal source channels for thering is signal to input the whole detected
Vision signal carry out being cached in internal memory in advance, when user select switching signal source channels when, directly from the signal after switching
The vision signal cached in advance is read in source channels to be shown, is eliminated and is delayed the vision signal of the signal source channels after switching
The processing of internal memory is stored to, so as to can faster show the picture signal after switching during the switching of signal source channels, switching is greatly reduced
Vision during signal source channels stops, and improves the visual effect of multimedia play equipment.
Brief description of the drawings
Fig. 1 is the flow chart of the switching method first embodiment of signal source of the present invention；
Fig. 2 is the flow chart of the switching method second embodiment of signal source of the present invention；
Fig. 3 is the flow chart of step S30 refinement in Fig. 1；
Fig. 4 is the high-level schematic functional block diagram of the switching device first embodiment of signal source of the present invention；
Fig. 5 is the high-level schematic functional block diagram of the switching device second embodiment of signal source of the present invention；
Fig. 6 be signal source of the present invention switching device 3rd embodiment in cache module refinement high-level schematic functional block diagram.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of switching method of signal source, and the switching method of the signal source runs on multimedia play equipment
In (such as television set).
Reference picture 1, Fig. 1 are the flow chart of the switching method first embodiment of signal source of the present invention.
In the first embodiment, the switching method of the signal source includes：
Step S10, when detecting detection instruction, whether each signal source channels for detecting multimedia play equipment have letter
Number input；
The detection instruction of multimedia play equipment detecting real-time, multimedia play equipment is when detecting detection instruction, detection
Whether each signal source channels of multimedia play equipment have signal input, to confirm which signal source channels has signal input,
Which signal source channels no signal input.Multimedia play equipment does not detect detection instruction, without any operation or continuation
Detecting detection instruction.In the present embodiment, detection signal source channels whether there is signal input, the state that can be fed back by signal source channels
Signal is determined, for example, when signal source channels have signal input, the status signal of feedback is the first level (such as high electricity
It is flat), when signal source channels no signal inputs, the status signal of feedback for the second electrical level opposite with the first level state (such as
Low level).
In the present embodiment, 1, detection instruction can be multimedia play equipment timing caused by instruct, that is, realize to more matchmakers
Whether each signal source channels of body playback equipment have the timing detection that signal inputs；Refer to for example, producing a detection every 1 second
Order, then timing detect once in 1 second.2nd, it can also be to be instructed caused by multimedia play equipment start to detect instruction, i.e., more
Apparatus for media playing just produces a detection instruction in start, then whether has signal input to each signal source channels during start
Detected.3rd, detect when instruction can also be signal source button (for example, signal source channel selecting menu key) triggering and produce
Instruction, i.e., when user presses signal source button, produce detection instruction, whether have to each signal source channels signal input into
Row detection.One or more modes in above-mentioned three kinds of modes can be included by detecting the generation of instruction, i.e. multimedia play equipment is determined
When produce detection instruction, start when produce detection instruction and when signal source button trigger produce detection instruct, can be simultaneously
In the presence of.
Step S20, obtain the vision signal in the signal source channels for thering is signal to input；
When determining the signal source channels of multimedia play equipment has signal input, obtaining the signal source channels (has signal defeated
The signal source channels entered) in vision signal in one section of duration, obtain respectively in the signal source channels for all thering is signal to input
Video data.When the signal source channels no signal input of multimedia play equipment, it can perform and not obtain no signal input
Vision signal in signal source channels, do not do either any operation or, continue to detect whether other signal source channels have signal
Input.
Step S30, by the vision signal code cache in the acquired signal source channels for thering is signal to input to internal memory；
After vision signal in the signal source channels for thering is signal to input acquisition, the coding journey of the signal source channels is called
Sequence, the vision signal of acquisition is encoded into video flowing, the video flowing being encoded into then is cached to internal memory (for example, Double Data Rate
SDRAM the relevant position (different signal source channels correspond to different buffer address) in), so that multimedia play equipment is read
Display.
Step S40, when detecting signal source switching command, it is corresponding that the signal source channels after switching are read out from internal memory
Vision signal, and show vision signal.
In user's switching signal source channels, multimedia play equipment detects signal source switching command, is read from internal memory
Take out vision signal corresponding to the signal source channels after switching：If the signal source channels after switching are the signal sources for having signal to input
Passage, then read out the signal source channels after switching and be buffered in video flowing in internal memory and carry out image preprocessing (image is located in advance
Reason includes image reading, image decoding, audio-visual synchronization processing and display format adjustment), after completing image preprocessing, it will show
Data are sent to the CPU of multimedia play equipment, are shown by CPU display channels；If the signal source channels after switching are nothings
Signal input signal source channels, then due in internal memory without cache the no signal input signal source channels vision signal, because
This reading is shown less than signal, i.e. no signal.
The switching method for the signal source that the present embodiment proposes, passes through each signal source channels to multimedia play equipment
The detection of signal input state (being inputted with/without signal), and in the signal source channels for thering is signal to input the whole detected
Vision signal carry out being cached in internal memory in advance, when user select switching signal source channels when, directly from the signal after switching
The vision signal cached in advance is read in source channels to be shown, is eliminated and is delayed the vision signal of the signal source channels after switching
The processing of internal memory is stored to, so as to can faster show the image letter after switching during the switching of signal source channels, switching letter is greatly reduced
Vision during number source channels stops, and improves the visual effect of multimedia play equipment.
Further, in the first embodiment, in step S20, the video in the signal source channels for having signal to input is obtained
The step of signal, includes：Obtain the vision signal in preset duration in the signal source channels for thering is signal to input.
The length of the vision signal of acquisition can be preset, can be according to the CPU of specific multimedia play equipment residue
Resource size is reasonably set, such as more in the process of multimedia play equipment operation, when cpu resource is less, can be incited somebody to action
The duration for obtaining the vision signal for the signal source channels for having signal to input sets smaller (such as 3 seconds, 5 seconds), so as to reduce pair
The demand of the cpu resource of multimedia play equipment, reduce the CPU of multimedia play equipment burden so that multimedia is set
Standby use operation is more smooth.
The switching method of the signal source of the present embodiment, by obtaining vision signal in the signal source channels for thering is signal to input
Duration can sets itself, corresponding modification setting can be carried out under the different operation burdens according to multimedia play equipment, from
And ensure the smoothly operation of multimedia play equipment and use.
Reference picture 2, Fig. 2 are the flow chart of the switching method second embodiment of signal source of the present invention.
In a second embodiment, before step S20, the switching method of signal source also includes：
Step S50, the signal source channels for having signal to input are identified.
When the signal source channels for detecting multimedia play equipment have signal input, then the signal source channels (there is into letter
Number input signal source channels) be identified.The mode of mark can be it is a variety of, for example, 1, can be by the signal source channels in interaction
Corresponding option progress high brightness is highlighted on interface or color background is shown；2nd, can be by the signal source channels on interaction circle
Printed words such as " have/have signal " are shown on face on corresponding option.In addition, the switching method of the signal source, can also be in multimedia
During the signal source channels no signal input of playback equipment, by signal source channels corresponding choosing on interactive interface of no signal input
Item carries out dull gray brightness and shown, or corresponding option is shielded on interactive interface by the signal source channels of no signal input
(not showing)；Or the switching method of the signal source can be by the signal source channels for having signal input and the letter of no signal input
It is shown separately (for example, being divided into " having signal " and " no letter that number source channels corresponding option on interactive interface is divided into two classes
Number " shown separately).
The switching method of the signal source of the present embodiment, by the way that the signal source channels for having signal to input are identified so that
Which signal source channels user, which can be apparent from, signal input, user is avoided in switching signal source channels, each
(including the signal source channels of signal input and the signal source channels of no signal input) between signal source channels, blindly switching is grasped
Make, so that during user's switching signal source passage, be more accurately and efficiently switched to the signal source channels for wanting to watch.
Reference picture 3, Fig. 3 are the flow chart of step S30 refinement in Fig. 1.
In the third embodiment, the step S30 of the switching method of the signal source includes：
Step S301, the vision signal in the acquired signal source channels for having signal to input is encoded；
The coded program of the signal source channels of vision signal acquired in calling, acquired vision signal is encoded into video
Stream.
Step S302, judge the vision signal after coding and the advance vision signal being buffered in internal memory whether phase
Together；
Can be by thering is the signal source channels of signal input are corresponding to delay in advance with this in internal memory the vision signal after coding
The vision signal (video flowing that i.e. the signal source channels for having signal to input have been buffered in internal memory) existed in internal memory is carried out
Compare, to determine the vision signal in the signal source channels for thering is signal to input either with or without renewal, that is, the video letter seen after coding
It is number whether identical with the vision signal that is buffered in internal memory in advance.
Step S303, will coding if the vision signal after coding is identical with the vision signal being buffered in advance in internal memory
Vision signal afterwards is deleted, and keeps the vision signal being buffered in advance in internal memory；
If comparison result is identical, illustrate that the vision signal in the signal source channels for having signal to input does not update, this
When without using the vision signal after coding, the vision signal after coding is deleted, and keep being buffered in regarding in internal memory in advance
Frequency signal is constant.
Step S304, will coding if the vision signal after coding is different from the vision signal being buffered in advance in internal memory
Vision signal afterwards replaces the vision signal being buffered in advance in internal memory.
If comparison result differs, illustrate that the vision signal in the signal source channels for having signal to input has renewal, then need
The vision signal being buffered in advance corresponding to the signal source channels that this in internal memory has signal to input in internal memory is updated, so that more matchmakers
When the use of body equipment is switched to the signal source channels that this has signal input, what is read is that newest vision signal is shown；
Now this vision signal that is buffered in internal memory is useless in advance, therefore the vision signal after coding is replaced into caching in advance
Vision signal in internal memory, the vision signal that will be buffered in advance in internal memory are removed, the vision signal after coding are cached
The newest vision signal being buffered in advance in internal memory is formed, the vision signal after encoding next time is just buffered in advance with newest
Whether the vision signal in internal memory is compared identical.
The switching method of the signal source of the present embodiment, there is the vision signal in the signal source channels of signal input by detection
Renewal is whether there is, in renewal, will replace after the vision signal newly obtained coding and corresponding in internal memory be buffered in advance in internal memory
Vision signal, avoid occupancy of the useless vision signal to internal memory；Simultaneously when without renewal, directly keep corresponding in internal memory
The vision signal that is buffered in internal memory in advance it is constant, the vision signal after coding is deleted, and without caching, effective drop
The occupancy of the low cpu resource to multimedia play equipment.
The present invention further provides a kind of switching device of signal source, the switching device of the signal source runs on multimedia and broadcast
Put in equipment (such as television set).
Reference picture 4, Fig. 4 are the high-level schematic functional block diagram of the switching device first embodiment of signal source of the present invention.
In the first embodiment, the switching device of signal source includes：
Detection module 10, for when detecting detection instruction, detecting each signal source channels of multimedia play equipment
Whether signal input is had；
The detecting detection instruction of detection module 10, when detecting detection instruction, detection multimedia is set detection module 10
Whether standby each signal source channels have signal input, and to confirm which signal source channels has signal input, which signal source is led to
Road no signal input.Detection module 10 does not detect detection instruction, without any operation or continues detecting detection instruction.This reality
Apply in example, detection signal source channels whether there is signal input, and the status signal that can be fed back by signal source channels is determined, example
Such as, when signal source channels have signal input, the status signal of feedback is the first level (such as high level), and signal source channels are without letter
Number input when, the status signal of feedback is the second electrical level (such as low level) opposite with the first level state.
In the present embodiment, 1, detection instruction can be multimedia play equipment timing caused by instruct, that is, realize to more matchmakers
Whether each signal source channels of body playback equipment have the timing detection that signal inputs；Refer to for example, producing a detection every 1 second
Order, then timing detect once in 1 second.2nd, it can also be to be instructed caused by multimedia play equipment start to detect instruction, i.e., more
Apparatus for media playing just produces a detection instruction in start, then whether has signal input to each signal source channels during start
Detected.3rd, detect when instruction can also be signal source button (for example, signal source channel selecting menu key) triggering and produce
Instruction, i.e., when user presses signal source button, produce detection instruction, whether have to each signal source channels signal input into
Row detection.One or more modes in above-mentioned three kinds of modes can be included by detecting the generation of instruction, i.e. multimedia play equipment is determined
When produce detection instruction, start when produce detection instruction and when signal source button trigger produce detection instruct, can be simultaneously
In the presence of.
Acquisition module 20, for obtaining the vision signal in the signal source channels for thering is signal to input；
When determining the signal source channels of multimedia play equipment has signal input, acquisition module 20 obtains the signal source channels
Vision signal in (the signal source channels for having signal to input) in one section of duration, the signal source for all having signal to input is obtained respectively
Video data in passage.When the signal source channels no signal input of multimedia play equipment, acquisition module 20 can not obtain
Take the vision signal in the no signal input signal source channels, do not do either any operation or, allow detection module 10 to continue to examine
Survey whether other signal source channels have signal input.
Cache module 30, for by the vision signal code cache in the acquired signal source channels for thering is signal to input to interior
Deposit；
After vision signal in the signal source channels for thering is signal to input acquisition, the coding journey of the signal source channels is called
Sequence, the vision signal of acquisition is encoded into video flowing, the video flowing being encoded into then is cached to internal memory (for example, Double Data Rate
SDRAM the relevant position (different signal source channels correspond to different buffer address) in), so that multimedia play equipment is read
Display.
Read module 40, for when detecting signal source switching command, reading out the signal source after switching from internal memory
Vision signal corresponding to passage, and show vision signal.
In user's switching signal source channels, read module 40 detects signal source switching command, is read out from internal memory
Vision signal corresponding to signal source channels after switching：Lead to if the signal source channels after switching are the signal sources for having signal to input
Road, then read module 40 is that the video flowing that the signal source channels read out after switching are buffered in internal memory carries out image preprocessing
(image preprocessing includes image reading, image decoding, audio-visual synchronization processing and display format adjustment), complete image preprocessing
Afterwards, display data is sent to the CPU of multimedia play equipment, shown by CPU display channels；If the signal source after switching
Passage is the signal source channels of no signal input, then due to the video without the signal source channels for caching no signal input in internal memory
Signal, therefore read module 40 reads and shown less than signal, i.e. no signal.
The switching device for the signal source that the present embodiment proposes, passes through each signal source channels to multimedia play equipment
The detection of signal input state (being inputted with/without signal), and in the signal source channels for thering is signal to input the whole detected
Vision signal carry out being cached in internal memory in advance, when user select switching signal source channels when, directly from the signal after switching
The vision signal cached in advance is read in source channels to be shown, is eliminated and is delayed the vision signal of the signal source channels after switching
The processing of internal memory is stored to, so as to can faster show the image letter after switching during the switching of signal source channels, switching letter is greatly reduced
Vision during number source channels stops, and improves the visual effect of multimedia play equipment.
Further, acquisition module 20 is additionally operable to obtain the video in the signal source channels for having signal to input in preset duration
Signal.
The length for the vision signal that acquisition module 20 obtains can be preset, can be according to specific multimedia play equipment
CPU surplus resources size is reasonably set, for example, multimedia play equipment operation process it is more, cpu resource compared with
When few, the duration that can will obtain the vision signal for the signal source channels for having signal to input sets smaller (such as 3 seconds, 5 seconds), from
And reduce the demand to the cpu resource of multimedia play equipment, reduce the CPU of multimedia play equipment burden so that more matchmakers
The use operation of body playback equipment is more smooth.
The switching device of the signal source of the present embodiment, by obtaining vision signal in the signal source channels for thering is signal to input
Duration can sets itself, corresponding modification setting can be carried out under the different operation burdens according to multimedia play equipment, from
And ensure the smoothly operation of multimedia play equipment and use.
Reference picture 5, Fig. 5 are the high-level schematic functional block diagram of the switching device second embodiment of signal source of the present invention.Second
In embodiment, the switching device of signal source also includes：
Mark module 50, for being identified to the signal source channels for thering is signal to input.
Mark module 50 is when the signal source channels for detecting multimedia play equipment have signal input, then by the signal source
Passage (the signal source channels for having signal to input) is identified.Mark module 50 identify mode can be it is a variety of, for example, 1, can will
Corresponding option progress high brightness is highlighted the signal source channels on interactive interface or color background is shown；2nd, can should
Signal source channels show printed words such as " have/have signal " on interactive interface on corresponding option.In addition, the switching of the signal source
The mark module 50 of device can also be in the signal source channels no signal input of multimedia play equipment, by the letter of no signal input
Number source channels corresponding option on interactive interface carries out dull gray brightness and shown, or the signal source channels that no signal is inputted exist
Corresponding option is shielded and (not shown) on interactive interface；Or the mark module 50 of the switching device of the signal source can
By the signal source channels for having signal input and the signal source channels of no signal input, the corresponding option on interactive interface is divided into
Two classes are shown separately (for example, it is shown separately to be divided into " having signal " and " no signal ").
The switching device of the signal source of the present embodiment, the signal source channels for having signal to input are carried out by mark module 50
Mark so which signal source channels user, which can be apparent from, signal input, avoids user in switching signal source channels
When, between each signal source channels (include signal input signal source channels and no signal input signal source channels) it is blind
Mesh handover operation, so that during user's switching signal source passage, more accurately and efficiently it is switched to the signal source for wanting to watch and leads to
Road.
Reference picture 6, Fig. 6 be signal source of the present invention switching device 3rd embodiment in cache module refinement functional module
Schematic diagram.
Technical scheme of the technical scheme of 3rd embodiment based on first embodiment.In the third embodiment, cache module
30 include：
Coding unit 31, for the vision signal in the acquired signal source channels for having signal to input to be encoded；
Coding unit 31 calls the coded program of the signal source channels of acquired vision signal, by acquired vision signal
It is encoded into video flowing.
Judging unit 32, for by the vision signal after coding with the signal source channels are corresponding in internal memory is buffered in advance
Vision signal in internal memory is compared；
Judging unit 32 passes through the vision signal after coding is corresponding with the signal source channels that this in internal memory has signal to input
The vision signal being buffered in advance in internal memory (i.e. the signal source channels for having signal input have been buffered in video in internal memory
Stream) it is compared, to judge the vision signal in the signal source channels for thering is signal to input either with or without renewal.
Holding unit 33, the vision signal after being encoded for judgement are with the vision signal being buffered in advance in internal memory
It is no identical；
Holding unit 33 can be by the way that this in the vision signal after coding and internal memory to be had to the signal source channels pair of signal input
(i.e. the signal source channels for having signal to input have been buffered in regarding in internal memory to the vision signal being buffered in advance in internal memory answered
Frequency flows) it is compared, to determine the vision signal in the signal source channels for thering is signal to input either with or without renewal, that is, after seeing coding
Vision signal and the vision signal that is buffered in internal memory in advance it is whether identical.
Replacement unit 34, it is different from the vision signal being buffered in advance in internal memory for vision signal in encoded, then
Vision signal after coding is replaced to the vision signal being buffered in advance in internal memory.
If comparison result differs, illustrate that the vision signal in the signal source channels for having signal to input has renewal, then need
The vision signal being buffered in advance corresponding to the signal source channels that this in internal memory has signal to input in internal memory is updated, so that more matchmakers
When the use of body equipment is switched to the signal source channels that this has signal input, what is read is that newest vision signal is shown；
Now this vision signal that is buffered in internal memory is useless in advance, therefore replacement unit 34 replaces the vision signal after coding
The vision signal being buffered in advance in internal memory is changed, the vision signal that will be buffered in advance in internal memory is removed, by regarding after coding
Frequency signal caches to form the newest vision signal being buffered in advance in internal memory, the vision signal after next time coding just with it is newest
Whether the vision signal being buffered in advance in internal memory is compared identical.
The switching device of the signal source of the present embodiment, there is the vision signal in the signal source channels of signal input by detection
Renewal is whether there is, in renewal, will replace after the vision signal newly obtained coding and corresponding in internal memory be buffered in advance in internal memory
Vision signal, avoid occupancy of the useless vision signal to internal memory；Simultaneously when without renewal, directly keep corresponding in internal memory
The vision signal that is buffered in internal memory in advance it is constant, the vision signal after coding is deleted, and without caching, effective drop
The occupancy of the low cpu resource to multimedia play equipment.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of switching method of signal source, it is characterised in that the switching method of the signal source comprises the following steps：
When detecting detection instruction, whether each signal source channels for detecting multimedia play equipment have signal input；
Obtain the vision signal in the signal source channels for thering is signal to input；
Vision signal in the acquired signal source channels for having signal to input is encoded；
Judge whether the vision signal after the coding and the vision signal being buffered in advance in internal memory are identical；If after the coding
Vision signal it is identical with the vision signal that is buffered in internal memory in advance, then the vision signal after the coding is deleted,
And keep the vision signal being buffered in advance in internal memory；If vision signal after the coding with it is described be buffered in advance in
Vision signal in depositing is different, then the vision signal after the coding is replaced into the video being buffered in advance in internal memory and believed
Number；
When detecting signal source switching command, video letter corresponding to the signal source channels after switching is read out from the internal memory
Number, and show the vision signal.
2. the switching method of signal source as claimed in claim 1, it is characterised in that have the signal of signal input in the acquisition
Before the step of vision signal in source channels, the switching method of the signal source also includes：
The signal source channels for having signal to input are identified.
3. the switching method of signal source as claimed in claim 1, it is characterised in that the acquisition has the signal source that signal inputs
The step of vision signal in passage, includes：
Obtain the vision signal in preset duration in the signal source channels for thering is signal to input.
4. the switching method of the signal source as any one of claim 1-3, it is characterised in that the detection instruction is institute
State multimedia play equipment timing caused by instruction or the multimedia play equipment start caused by instruction or signal source by
Instructed caused by key triggering.
5. a kind of switching device of signal source, it is characterised in that the switching device of the signal source includes：
Detection module, for when detecting detection instruction, whether each signal source channels for detecting multimedia play equipment to have
Signal inputs；
Acquisition module, for obtaining the vision signal in the signal source channels for thering is signal to input；
Coding module, for the vision signal in the acquired signal source channels for having signal to input to be encoded；Cache module,
For judging whether the vision signal after the coding and the vision signal being buffered in advance in internal memory are identical；If after the coding
Vision signal it is identical with the vision signal that is buffered in internal memory in advance, then the vision signal after the coding is deleted,
And keep the vision signal being buffered in advance in internal memory；If vision signal after the coding with it is described be buffered in advance in
Vision signal in depositing is different, then the vision signal after the coding is replaced into the video being buffered in advance in internal memory and believed
Number；
Read module, lead to for when detecting signal source switching command, reading out the signal source after switching from the internal memory
Vision signal corresponding to road, and show the vision signal.
6. the switching device of signal source as claimed in claim 5, it is characterised in that the switching device of the signal source is also wrapped
Include：
Mark module, for being identified to the signal source channels for thering is signal to input.
7. the switching device of signal source as claimed in claim 5, it is characterised in that the acquisition module, which is additionally operable to acquisition, letter
Vision signal in the signal source channels of number input in preset duration.
8. the switching device of the signal source as described in claim any one of 5-7, it is characterised in that the detection instruction is described
Instruction or signal source button caused by instruction caused by multimedia play equipment timing or multimedia play equipment start
Instructed caused by triggering.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410435950.7A CN104320701B (en) | 2014-08-29 | 2014-08-29 | The switching method and device of signal source |
| PCT/CN2014/085882 WO2016029502A1 (en) | 2014-08-29 | 2014-09-03 | Signal source switching method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410435950.7A CN104320701B (en) | 2014-08-29 | 2014-08-29 | The switching method and device of signal source |
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| CN104320701B true CN104320701B (en) | 2018-03-02 |
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| WO (1) | WO2016029502A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106412462A (en) * | 2015-07-31 | 2017-02-15 | 青岛海信电器股份有限公司 | Play signal output control method and play equipment |
| CN106658138B (en) * | 2016-07-25 | 2019-09-03 | 青岛海信电器股份有限公司 | Smart television and its signal source switch method, device |
| CN106254937B (en) * | 2016-08-09 | 2019-12-03 | 深圳Tcl数字技术有限公司 | The switching method of television set and its signal source |
| CN106254926A (en) * | 2016-08-10 | 2016-12-21 | 青岛海信电器股份有限公司 | The display control method of input channel icon and television terminal |
| CN106375683A (en) * | 2016-09-21 | 2017-02-01 | 广州视源电子科技股份有限公司 | Television signal channel switching method and apparatus |
| CN107333180B (en) * | 2017-06-28 | 2020-07-21 | 深圳Tcl新技术有限公司 | Information source switching method of television, television and computer readable storage medium |
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| WO2007024268A1 (en) * | 2005-08-25 | 2007-03-01 | Sony Ericsson Mobile Communications Ab | Mobile television channel switching system and method |
| CN101036382A (en) * | 2004-10-01 | 2007-09-12 | 三星电子株式会社 | Display apparatus and control method thereof |
| CN101426110A (en) * | 2008-11-28 | 2009-05-06 | 北京创毅视讯科技有限公司 | Method for implementing television channel switch and multimedia broadcast receiving terminal |
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| US20090044224A1 (en) * | 2007-08-07 | 2009-02-12 | Texas Instruments Incorporated | Dynamic channel switching |
| CN101909160A (en) * | 2009-12-17 | 2010-12-08 | 新奥特（北京）视频技术有限公司 | Broadcast control switching method and device in network video live broadcast |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101036382A (en) * | 2004-10-01 | 2007-09-12 | 三星电子株式会社 | Display apparatus and control method thereof |
| WO2007024268A1 (en) * | 2005-08-25 | 2007-03-01 | Sony Ericsson Mobile Communications Ab | Mobile television channel switching system and method |
| CN101426110A (en) * | 2008-11-28 | 2009-05-06 | 北京创毅视讯科技有限公司 | Method for implementing television channel switch and multimedia broadcast receiving terminal |
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| CN104320701A (en) | 2015-01-28 |
| WO2016029502A1 (en) | 2016-03-03 |
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