CN103491332B - Display processing unit, media player, display processing method and TV signal grasping means - Google Patents
Display processing unit, media player, display processing method and TV signal grasping means Download PDFInfo
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Abstract
The invention provides a kind of display processing unit, including display output generator and graphics video after-treatment device.When display output generator finds underflow, determine next hyposynchronous the M+N bar line.Graphics video after-treatment device learn underflow will occur time, may proceed to current the M bar line to finish, the most directly skip N bar line, start to process the M+N bar line, start waiting for after having processed.Until display output generator also processes M+N bar of line, graphics video after-treatment device returns to normal operating conditions.From display output generator find under spill over display output generator also process the M+N bar line during this period of time in, display output generator can show the M bar line repeatedly, until entering normal operating conditions when display output generator also processes M+N bar line.
Description
Technical field
The present invention relates to media player, particularly relate to display processing unit, display processing method and TV signal and grab
Access method.
Background technology
The equipment that Set Top Box (Set Top Box) or other display are correlated with generally includes graphics video post-processing module and electricity
Depending on standard generation module.It is said that in general, graphics video post-processing module is for carrying out later stage process to the source decompressed,
Such as: by menu, captions and the synthesis of drawing, the zooming in or out of image, denoising, the regulation etc. of image color.
Television system generation module meets display display output (such as, PAL, NTSC, high definition, 3D) for generation
The video data of desirable format, for the correct display of display.
For saving bandwidth of memory, graphics video post-processing module is often allowed directly the data handled well to be transferred to electricity
Depending on standard generation module rather than first write memorizer read by the latter again.But in the display system, in some cases also
Being the situation that there will be local bandwidth excessive (being taken by other devices), this can cause graphics video post-processing module energy
The bandwidth used can of short duration decline to a great extent, so that the data processing speed of graphics video post-processing module is when this section
Less than the speed required by television system generation module, the situation of underflow occurs between.
In order to solve this underflow condition, the way of present technology is: when television system generation module finds underflow, figure
Shape Video post-processing module can be abandoned at once to the source (depositing in memory) required for the line being presently processing
Remaining all requests, then start the process to next line.But directly abandon request of data and run counter to memorizer association
View, the request of read request protocol requirement needs first to wait until that response is responded and waits until that request data is returned, just the most again after sending
A complete read request agreement can be calculated complete.Although it addition, directly abandoning request of data can allow graphics video post processing
Device relatively returns to the process of new line, but also because having run counter to memory protocol, brings instability, such as read request
After being abandoned, the data of response or request are but returned.New problem is the most likely brought for these unexpected process,
And these may have influence on the every aspect of after-treatment device.From the point of view of conventional historical experience, this method may be led
Cause memory requests to make mistakes and make whole display system deadlock occur and cannot recover.
Additionally, above-mentioned way is frequently present of such a case, television system generation module finds to be in during underflow to work as
The place that front is terminated soon, if now graphics video post-processing module proceeds to process next line, television system produces mould
Block also can quickly enter next line, then because graphics video post-processing module the most just starts to process this line, institute
The most again there is underflow.
Further, since find that the position of underflow is different every time, the effect on display terminal is probably on the right side of picture and compares
Messy, give bad perception.
Therefore, need one badly and can guarantee that graphics video post-processing module and television system generation module stable operation and right
The technical scheme that the impact of display terminal is less.
Summary of the invention
To achieve these goals, the invention provides display processing unit, media player, display processing method with
And TV signal grasping means.
In one embodiment, the invention provides a kind of display processing unit.This display processing unit includes:
Graphics video after-treatment device and display output generator,
Described display output generator includes:
Overflow judge module, be used for judging whether will appear from underflow when processing to M bar of line；
Resynchronisation line determines module, determines next hyposynchronous the M+N bar line of needs according to the situation of underflow；
Described graphics video after-treatment device includes:
Graphics video post-processing module, for carrying out post processing and being directly output to described aobvious to the source decompressed
Show standard generator；
Stop and resynchronisation line traffic control module, for stopping graphics video post-processing module when underflow will occur
Process the line after the M bar line, and control described graphics video post-processing module from memorizer reading process M+N
Source needed for bar line；
Described display processing unit also includes that TV signal keeps module, is positioned at graphics video after-treatment device or display system
In formula generator, for producing the pixel of M+1 to M+N-1 bar line voluntarily.
In one embodiment, described display processing unit may also include television system handling module, described television system
Handling module captures TV signal from the video output device of another outgoing television signal, and as described graphics video
One of input of after-treatment device.
In one embodiment, the invention provides a kind of display processing method.This display processing method includes:
Display output generator judges that the M bar line i.e. will appear from underflow；
Described display output generator determines next hyposynchronous the M+N bar line；
Described display output generator is by will the information of underflow and next hyposynchronous M+N line notice figure
Video post-processing device；
Described graphics video after-treatment device has continued the post processing of the M article line residual pixel；
Described graphics video after-treatment device suspends the line that post processing is new；
Described display output generator or described graphics video after-treatment device produce M+1 to M+N-1 bar line voluntarily
Pixel；And
Described graphics video after-treatment device reads the source wanting the M+N bar line of post processing to need from memorizer.
In another embodiment, the invention provides a kind of display processing unit, including:
Graphics video post-processing module, display output generator and line taking device, wherein:
The pixel that post processing is good, for the source decompressed is carried out post processing, is deposited by described graphics video post-processing module
Store up to memorizer, and from described memorizer, take out the source that will process；
Described display output generator includes:
Overflow judge module, be used for judging whether will appear from underflow when processing to M bar of line；
Resynchronisation line determines module, determines next hyposynchronous the M+N bar line of needs according to the situation of underflow；
Resynchronisation judge module, is used for judging whether to export the M+N bar line；
Television system generation module, the output generation for receiving described line taking device meets display display system
The video data of formula, for the correct display of display；
Described line taking device includes:
Line taking module, for reading the good pixel of described post processing and being transferred to described TV from described memorizer
Standard generation module；
Stop and resynchronisation line reads control module, be used for learning when underflow will occur, regard at described figure
Frequently after post-processing module has processed the M bar line, termination processes new line, and controls described line taking module from described memorizer
Source needed for the M+N bar line of reading process；And
Resynchronisation trigger module, for touching when described display output generator will export M+N bar of line
Sending out graphics video post-processing module described starts to process the M+N bar line.
Described display processing unit also includes that TV signal keeps module, is positioned at graphics video after-treatment device or display system
In formula generator, for producing the pixel of M+1 to M+N-1 bar line voluntarily.
In yet another embodiment, the invention provides a kind of TV signal grasping means, the method includes:
Memory write resume module to the M bar line finds i.e. to will appear from overflow；
Memory write module determines next hyposynchronous the M+N bar line according to the situation of overflow；
The information and next hyposynchronous the M+N bar line that i.e. will appear from overflow are informed television system by memory write module
Formula handling module；
Television system handling module suspends the pixel that crawl is new, and waits the arrival of M+N bar of line；
The M bar line is write back memorizer by memory write module, and produces the residual pixel of M bar of line voluntarily；
Television system handling module waits until the M+N bar line, starts to capture pixel；And
Memory write module waits until that television system handling module transmits data to it again, and starts to write the M+N bar line
To memorizer.
In yet another embodiment, the invention provides a kind of media player.This media player includes:
Central processing unit, is configured to the operation being responsible for processing software, controls bus process scheduled media by I/O and broadcasts
Put each device in device to realize multi-media player function；
Video input device, is configured to obtain video flowing from outside and be written into memorizer；
Video decoder, is configured to described video input device is write the video flowing of described memorizer according to coding
Standard is decoded into incompressible frame figure or field figure；
Described memorizer, stores the video flowing of described video input device write；
Display processing unit, including graphics video after-treatment device and display output generator, wherein:
Described display output generator includes:
Overflow judge module, be used for judging whether will appear from underflow when processing to M bar of line；
Resynchronisation line determines module, determines next hyposynchronous the M+N bar line of needs according to the situation of underflow；
Television system generation module, meets display for the output generation receiving graphics video post-processing module
The video data of display output, for the correct display of display；
Described graphics video after-treatment device includes:
Described graphics video post-processing module, for carrying out post processing to the source decoded by described video decoder
And export to described display output generator；
Stop and resynchronisation line traffic control module, be used for learning when underflow will occur, after described graphics video
After processing module has processed the M bar line, termination processes new line, and controls described graphics video post-processing module from described
Source needed for the M+N bar line of memorizer reading process.
Described display processing unit also includes that TV signal keeps module, is positioned at graphics video after-treatment device or display system
In formula generator, for producing the pixel of M+1 to M+N-1 bar line voluntarily.
The technique scheme of the present invention has avoided the situation destroying memory protocol so that the uncertainty of whole design
Less, design more firm, vigorousness is more preferable.Technical scheme sacrifices several lines, for having striven for relatively below
Many time, so that the most again occur that the probability case earlier above of underflow is less.And from display terminal,
Most lines are all complete lines, and middle display terminal picture horizontal line is uneven compared to existing technology, especially right side
The situation that picture is more messy, the picture perception that the present invention is represented is significantly improved.
Accompanying drawing explanation
Fig. 1 illustrates the media player according to one embodiment of the invention；
Fig. 2 A illustrates the display processing unit according to one embodiment of the invention；
Fig. 2 B illustrates the display processing unit according to one embodiment of the invention；
Fig. 3 A illustrates the display process chart according to one embodiment of the invention；
Fig. 3 B illustrates the display process chart according to one embodiment of the invention；
Fig. 4 illustrates the display processing unit according to one embodiment of the invention；
Fig. 5 illustrates the display processing unit according to one embodiment of the invention；
Fig. 6 illustrates the TV signal grabbing device according to one embodiment of the invention；And
Fig. 7 illustrates that the TV signal according to one embodiment of the invention captures flow chart.
Detailed description of the invention
Fig. 1 illustrates the media player according to one embodiment of the invention.This media player 10 is not it may be that but limit
In, Set Top Box, DVD player, NMP player, high definition player etc..In one embodiment, these media
Player include display processing unit 100, video decoder 102, plotting unit 104, video input device 106,
Central processing unit (CPU) 108, input and output control bus (I/O controls bus) 110, storage bus and controller
112, memorizer 114.
Central processing unit 108 is configured to the operation being responsible for processing software, controls bus 110 by I/O and processes scheduling
Each device is allowed to realize the function of multimedia.I/O controls bus 110 to be come by reading and writing the I/O depositor of each device
As the bridge that each device is controlled.Memorizer 114 is used for depositing each device in media player works temporarily
And central processing unit 108 works the chip of desired data.In one embodiment, memorizer 114 is sheet external memory
Device.Storage bus and controller 112 are as the bridge of each device and central processing unit with memorizer swapping data, main
There are two functions, i.e. bus arbitration and by external memory bus in blocks for storage inside general line system.Video input device
106 are configured to obtain video flowing from outside and be written into memorizer, and this video input device 106 is processed by central authorities
Bus F that device controls bus 110 from I/O controls, and obtains video flowing from external bus M, by storage inside bus
Video flowing is write memorizer 114 by J.In one embodiment, this video input device 106 can be USB, SATA,
SD, CF interface, external USB flash disk, portable hard drive, flash card, it is also possible to be communication device, from satellite/cable television
Etc. aspect obtain video flowing.Plotting unit 104 includes drawing engine, is used for processing menu, captions or game picture
Device.Video decoder 102 is that video input device 106 is write the video flowing of memorizer 114 according to coding
Standard such as mpeg2, rmvb etc. are decoded into incompressible frame figure or the device of field figure.
In one embodiment, video decoder 102(includes video input device 106) and plotting unit 104
Both can exist with only one of which.In another embodiment, video decoder 102 and the merit of plotting unit 104
Energy can be by central processing unit 108 on behalf of process.
Display processing unit 100 processes also for the frame figure after video decoder 102 decompression or field figure carry out the later stage
Produce the video data meeting display display output, for the correct display of display.Display output includes, but not
It is limited to, the standard such as PAL, NTSC, high definition, 3D.This display processing unit 100 includes according to the present invention one enforcement
The graphics video after-treatment device 103 of example and according to an embodiment of the invention display output generator 101.This
This display processing unit 100 of bright offer, when display output generator 101 finds underflow, is located after graphics video
Reason device 103 may proceed to current the M bar line to finish, and the most directly skips N bar line, starts to process the M+N article
Line, starts waiting for after having processed.Until display output generator 101 also processes M+N bar of line, figure
Shape Video post-processing device 103 returns to normal operating conditions.Spill under finding from display output generator 101
It is interior during this period of time that display output generator 101 also processes the M+N bar line, and display output generator 101 can
Repeatedly to show the M bar line, until entering normal work when display output generator 101 also processes M+N bar line
Make state.
Fig. 2 A illustrates the display processing unit 100 according to one embodiment of the invention.Showing in display processing unit 100
Show standard generator 101, except including the function achieved by television system generation module 205 of the prior art
Outside module, also include that the first data receiver and sending module 201, resynchronisation line determine that module 202, TV signal are protected
Hold module 203, resynchronisation judge module 204 and overflow judge module 206.Figure in display processing unit 100 regards
Frequently after-treatment device 103, except include in prior art functional module achieved by graphics video post-processing module it
Outward, also include the second data receiver and sending module 207, stop and resynchronize line reading control module 208, resynchronisation
Trigger module 209, graphics video post-processing module 210.In one embodiment, graphics video after-treatment device 103
From memorizer, obtain data source, and directly the data through handling well thereafter are directly inputted to display output generation dress
Put 101.
Overflow judge module 206 to be used for judging i.e. to will appear from underflow condition.Such as, when display output generator 101
When processing to M bar of line, spilling judge module 206 has found that it is likely that and will appear from underflow.Resynchronisation line determines module 202
Situation according to underflow judges to need next hyposynchronous start line, i.e. the M+N bar line.In one embodiment, N
Determined that module 202 determines according to the situation of underflow by resynchronisation line.In one embodiment, N can also be to set in advance
Fixed.Now, the first data receiver and sending module 201 will will occur the information of underflow and next is hyposynchronous
Start line (that is, the M+N bar line) is sent to the second data receiver and the transmission of graphics video after-treatment device 103
Module 207.Graphics video after-treatment device 103 is after receiving above-mentioned information, and graphics video post-processing module 210 continues
Continue the process of the M article line residual pixel.Stop and resynchronisation line reads control module 208 when after graphics video
After processing module 210 has processed the residual pixel of M bar of line, stop graphics video post-processing module 210 and process newly
Line, and read from memorizer and to do the source that the M+N bar line needs.Meanwhile, although graphics video post processing
Device 103 have ceased the process of new line, but owing to display output generator 101 needs real-time output electricity
Depending on signal, therefore, TV signal keeps module 203 to be configured to produce graphics video after-treatment device 103 voluntarily and do not have
Can be had enough time the pixel processed.That is, TV signal keeps module 203 will produce M+1 to the M+N-1 bar line phase voluntarily
Between pixel, to keep the normal output of TV signal.In one embodiment, TV signal holding module 203 can
The most repeatedly to export the pixel of M bar of line, it is also possible to produce any pixel the most voluntarily.Resynchronisation is sentenced
Disconnected module 204 judges whether display output generator 101 will export the M+N bar line.If being judged as NO, then
TV signal keeps module 203 that continuation produces pixel voluntarily；If being judged as YES, then TV signal keeps module 203
Stop producing pixel voluntarily.Display output generator 101 will be exported by the first data receiver and sending module 201
The message of M+N bar of line informs graphics video after-treatment device 103.Second data receiver and sending module 207 receive
After this information, resynchronisation trigger module 209 triggers graphics video post-processing module 210 to start to process the M+N article
Line.The M+N article that display output generator 101 output pattern Video post-processing device 103 post processing then is good
Line.
It should be noted that the first data receiver involved in the present invention and sending module and the second data receiver and send out
The data sending module to receive and send also include through the video data that graphics video after-treatment device 103 post processing is good.
In another embodiment, TV signal keeps module 203 to may be alternatively located in graphics video after-treatment device, as
Shown in Fig. 2 B.Similar with the function in Fig. 2 A, in order to keep the normal output of TV signal, the TV in Fig. 2 B
Signal keeps module 203 ' to be configured to produce the picture that graphics video after-treatment device 103 could not have enough time to process voluntarily
Element, i.e. TV signal keeps module 203 ' will to produce the pixel during M+1 to M+N-1 bar line voluntarily, to keep
The normal output of TV signal.
Fig. 3 A illustrates the display handling process according to one embodiment of the invention.In order to make flow chart simpler and clearer, at figure
In 3A, display output generator uses B to represent, graphics video after-treatment device uses A to represent.In step 301
In, display output generator judges whether i.e. to will appear from underflow.The most then display output generator performs then
Step 302.In step 302, display output generator determines next hyposynchronous the M+N bar line.Display system
Formula generator judges the size of N according to the situation of underflow.In step 303, display output generator will
Occur that graphics video after-treatment device informed by information and next hyposynchronous the M+N bar line of underflow.In step 304
In, graphics video after-treatment device has continued the process of the M article line residual pixel.In step 305, figure regards
Frequently after-treatment device time-out processes new line, reads, from memorizer, the source that the M+N bar line to be processed needs.In step
In rapid 306, display output generator produces graphics video after-treatment device voluntarily and could not be able to do in time the pixel of post processing
And manage TV signal and normally export, produce the pixel of M+1 to M+N-1 bar line the most voluntarily, to keep TV signal
Normal output.Such as, the pixel producing M+1 to M+N-1 bar line voluntarily includes spilling over display output under self-discovery
Generator also processes the M+N bar line and repeatedly exports the pixel of M bar of line in during this period of time, it is also possible in this phase
Between produce any pixel voluntarily.In step 307, display output generator judges whether to export M+N
Bar line.The most then step 308 is performed.In step 308, display output generator will export
The information notification graphics video after-treatment device of M+N bar line.In a step 309, graphics video after-treatment device waits
Display output generator is informed and will be exported the M+N bar line.In the step 310, fill when graphics video post processing
Put after receiving the information that will export M+N bar of line, trigger the M+N bar line of post processing.In step 311,
The TV signal of M+N bar of line after the process of display output generator output pattern Video post-processing device.
Fig. 3 B illustrates the display handling process according to one embodiment of the invention.It should be noted that in this embodiment
In, the pixel producing M+1 to M+N-1 bar line voluntarily is performed by graphics video after-treatment device.In order to make flow chart
Simpler and clearer, in figure 3b, display output generator uses B to represent, graphics video after-treatment device uses A table
Show.In step 301, display output generator judges whether i.e. to will appear from underflow.The most then display output produces
Generating apparatus performs step 302 then.In step 302, display output generator determines next hyposynchronous M+N
Bar line.Display output generator judges the size of N according to the situation of underflow.In step 303, display output produces
The information and next hyposynchronous the M+N bar line that i.e. will appear from underflow are informed that graphics video post processing fills by generating apparatus
Put.In step 304, graphics video after-treatment device has continued the process of the M article line residual pixel.In step
In 320, graphics video after-treatment device suspends the line that post processing is new, and produces M+1 to M+N-1 bar line voluntarily
Pixel, to keep the normal output of TV signal.In step 321, it may be judged whether the M+N bar line will be exported.
When being judged as YES, perform step 322, i.e. trigger the M+N bar line of post processing.In step 323, show standard
The TV signal of M+N bar of line after the process of generator output pattern Video post-processing device.
Technical scheme has avoided the situation destroying memory protocol so that the uncertainty of whole design is less,
Designing more firm, vigorousness is more preferable.Technical scheme sacrifices several lines, during for having striven for more below
Between, so that the most again occur that the probability case earlier above of underflow is less.And from display terminal, the most greatly
Most lines are all complete lines, and middle display terminal picture horizontal line is uneven compared to existing technology, especially right panel
More messy situation, the picture perception that the present invention is represented is significantly improved.
Fig. 4 illustrates display processing unit according to another embodiment of the invention.In one embodiment, the application
Technical scheme can expand to the pixel of post processing and first write memorizer and taken from memorizer by television system generation module again
Return the display processing unit 400 of pixel.Specifically, this display processing unit 400 includes graphics video post processing mould
Block 401, line taking device 402 and display output generator 403.
In one embodiment, this display output generator 403 can use the display output in Fig. 2 A to produce dress
Put 101.Display output generator 403 can include overflowing judge module, when being used for judging to process to M bar of line
The most i.e. will appear from underflow；Resynchronisation line determines module, according to the situation of underflow determine needs next hyposynchronous the
M+N bar line；TV signal keeps module, for producing the pixel of M+1 to M+N-1 bar line voluntarily；Resynchronisation is sentenced
Disconnected module, is used for judging whether to export the M+N bar line；And television system generation module, it is used for receiving institute
State the output of line taking device and generation meets the video data of display display output, for the correct display of display.
The pixel that post processing is good, for the source decompressed is carried out post processing, is deposited by graphics video post-processing module 401
Store up to memorizer, and from described memorizer, take out the source that will process.
Line taking module 402 includes line taking module, for reading the good pixel of described post processing from described memorizer and passing
It is defeated by described television system generation module.It addition, line taking module 402 also include such as Fig. 2 A and Fig. 2 B in first number
According to receiving and sending module；Stop and resynchronisation line reads control module, be used for learning when underflow will occur,
After graphics video post-processing module 401 has processed the M bar line, termination processes new line, and controls line taking module from storage
Source needed for the M+N bar line of device reading process；And resynchronisation trigger module, for when display output generator
403 trigger graphics video post-processing module 401 when will export M+N bar of line starts to process the M+N bar line.
In yet another embodiment, corresponding to the technical scheme of Fig. 2 B, TV signal keeps module to may be alternatively located at figure
In Video post-processing module 401, for producing the pixel of M+1 to M+N-1 bar line voluntarily.
Technical scheme shown in Fig. 4 and the technical scheme shown in Fig. 2 A and Fig. 2 B have following difference.Due to display output
Generator 101 needs to produce in real time TV signal, therefore, after the technical scheme of Fig. 2 A and Fig. 2 B is to graphics video
The process frequency requirement of processing module 103 is higher, and generally, graphics video post-processing module 103 and display output produce
It is to mate by line between device 101, i.e. the time period of a graphics video post-processing module 103 only line holds
The all tasks of row.And the advantage of the technical scheme shown in Fig. 4 is that display output generator 403 can regard with figure
Frequently post-processing module 401 is isolated.The pixel that post processing is good can be first stored in depositing by graphics video post-processing module 401
In reservoir, the work of line taking is processed by line taking device 402.Therefore, graphics video post-processing module 401 is equivalent to
There is the time of buffering.But, comparing the technical scheme shown in Fig. 2 A and Fig. 2 B, the technical scheme shown in Fig. 4 accounts for
Can be bigger by bandwidth.Therefore, technical staff can use according to actual applicable cases have pin according to different demand
Technical scheme to property.
Fig. 5 illustrates display processing unit 500 according to another embodiment of the present invention.Display in the present embodiment processes dress
The application scenarios putting 500 is picture-in-picture.This display processing unit 500 except from memorizer obtain data source, also from
Other video output device 504 captures image, in order to realize the function of picture-in-picture or realize the merit of multiple display picture
Energy.This other video output device 504 can be any device of a kind of energy outgoing television signal, such as, image mechanical, electrical
Brain etc..Television system handling module 501, graphics video processing means 502 can be included at this display processing unit 500
With display output generator 503.Television system handling module 501 is for receiving TV from another video output device
Signal, exports the pixel grabbed to graphics video processing means 502.Graphics video processing means 502 also can be simultaneously
Source figure is obtained, to realize playing multiple picture in terminal player from memorizer.Wherein, graphics video processes dress
Put 502 and display output generator 503 can be the graphics video after-treatment device 103 in Fig. 2 A and Fig. 2 B and display
Standard generator 101.
Fig. 6 illustrates the TV signal grabbing device 600 according to one embodiment of the invention.This TV signal grabbing device
600 can be the extension to the scene shown in Fig. 5.Owing to television system handling module 601 is from another video frequency output
Capturing real time imaging in device 604, therefore, television system handling module is constantly in the state of process in real time, and works as
When the speed of the write memorizer of memory write module 602 does not catches up with, then there will be the situation of overflow.With reference to the present invention
Underflow processing method discussed in Fig. 2 A, Fig. 2 B, Fig. 3 A, Fig. 3 B, arrives when memory write module 602 processes
When M bar of line discovery are likely to occur overflow, memory write module 602 determines next time same according to the situation of overflow
The line M+N of step, and tell that television system captures by the information and next hyposynchronous line M+N that i.e. will appear from overflow
Module 601 so that it is suspend and capture new pixel, captures pixel again until the M+N bar line arrives.Suspending line taking
Period, memory write module 602 produces the residual pixel of M bar of line voluntarily and waits television system handling module 601
Again transmit data to it.
Fig. 7 illustrates that the TV signal according to one embodiment of the invention captures flow process.In order to make flow chart simpler and clearer, at figure
In 7, television system handling module uses C to represent, memory write module uses D to represent.In step 701, write storage
Device module 602 processes the M bar line and has found that it is likely that and will appear from overflow.In a step 702, memory write module 602 basis
The situation of overflow determines next hyposynchronous the M+N bar line.In one embodiment, N determines according to the situation of overflow.
In one embodiment, N can also be set in advance.In step 703, memory write module 602 will go out
Television system handling module 601 informed by information and next hyposynchronous the M+N bar line of existing overflow.In step 704
In, television system handling module 601 suspends the pixel that crawl is new, and waits the arrival of M+N bar of line.In step 705
In, meanwhile, the M bar line is write back memorizer by memory write module 602, and produces the residue of M bar of line voluntarily
Pixel.In step 706, television system handling module 601 waits until the M+N bar line, starts to capture pixel.In step
In 707, memory write module 602 waits until that television system handling module 601 transmits data to it again, and starts the
M+N bar line writes to memorizer.
Those of ordinary skill in the art it should be appreciated that above embodiment be intended merely to illustrate the present invention,
And it is not used as limitation of the invention, as long as in the spirit of the present invention, to embodiment described above
Change, modification all will fall in the range of claims of the present invention.
Claims (16)
1. a display processing unit, including:
Graphics video after-treatment device and display output generator,
Described display output generator includes:
Overflow judge module, during for judging the M bar of line processing an image, whether will appear from underflow；
Resynchronisation line determines module, determines next hyposynchronous the M+N bar line of needs according to the situation of underflow；
Described graphics video after-treatment device includes:
Graphics video post-processing module, for carrying out post processing and being directly output to described aobvious to the source decompressed
Show standard generator；
Stop and resynchronisation line traffic control module, for stopping graphics video post-processing module when underflow will occur
Process the line after the M bar line, and control described graphics video post-processing module from memorizer reading process M+N
Source needed for bar line；
Described display processing unit also includes that TV signal keeps module, is positioned at described graphics video after-treatment device or institute
State in display output generator, for producing the pixel of M+1 to M+N-1 bar line voluntarily.
2. display processing unit as claimed in claim 1, it is characterised in that described display output generator also wraps
Include resynchronisation judge module, be used for judging whether to export the M+N bar line；Described graphics video after-treatment device
Also include resynchronizing trigger module, for when described resynchronisation judge module judges will to export M+N bar of line
Trigger described graphics video post-processing module and start the M+N bar line of post processing.
3. display processing unit as claimed in claim 1, it is characterised in that described resynchronisation line determines module root
The size of N is determined according to the situation of underflow.
4. display processing unit as claimed in claim 1, it is characterised in that the size of described N is to preset
's.
5. display processing unit as claimed in claim 1, it is characterised in that described display output generator is also
Including television system generation module, for receiving the data that described graphics video post-processing module post processing is good, and produce
Meet the video data of display display output.
6. display processing unit as claimed in claim 1, it is characterised in that described graphics video post-processing module
For when learning that spilling will occur, continue the complete the M bar line of post processing.
7. display processing unit as claimed in claim 1, it is characterised in that described display processing unit also can wrap
Including television system handling module, described television system handling module is from the video output device of another outgoing television signal
Capture TV signal, and as one of the input of described graphics video after-treatment device.
8. a display processing method, including:
Display output generator judges that the M bar line of an image i.e. will appear from underflow；
Described display output generator determines next hyposynchronous the M+N bar line；
Described display output generator sends will the information of underflow and the information of next hyposynchronous M+N line
To graphics video after-treatment device；
Described graphics video after-treatment device has continued the post processing of the M article line residual pixel；
Described graphics video after-treatment device suspends the line that post processing is new；
Described display output generator or described graphics video after-treatment device produce M+1 to M+N-1 bar line voluntarily
Pixel；And
Described graphics video after-treatment device reads the source wanting the M+N bar line of post processing to need from memorizer.
9. display processing method as claimed in claim 8, it is characterised in that described method also includes:
Described display output generator judges to export the M+N bar line；
After described graphics video after-treatment device receives the information that will export M+N bar of line, trigger M+N
The post processing of bar line；And
Described display output generator exports the TV signal of post-treated M+N bar of good line.
10. display processing method as claimed in claim 8, it is characterised in that described display output generator is true
Fix hyposynchronous the M+N bar line to include determining N size according to underflow condition.
11. display processing methods as claimed in claim 8, it is characterised in that the size of described N is to preset
's.
12. 1 kinds of display processing units, including:
Graphics video post-processing module, display output generator and line taking device, wherein:
The pixel that post processing is good, for the source decompressed is carried out post processing, is deposited by described graphics video post-processing module
Store up to memorizer, and from described memorizer, take out the source that will process；
Described display output generator includes:
Overflow judge module, be used for judging whether will appear from underflow when processing to M bar of line；
Resynchronisation line determines module, determines next hyposynchronous the M+N bar line of needs according to the situation of underflow；
Resynchronisation judge module, is used for judging whether to export the M+N bar line；
Television system generation module, the output generation for receiving described line taking device meets display display system
The video data of formula, for the correct display of display；
Described line taking device includes:
Line taking module, for reading the good pixel of described post processing and being transferred to described TV from described memorizer
Standard generation module；
Stop and resynchronisation line reads control module, be used for learning when underflow will occur, regard at described figure
Frequently after post-processing module has processed the M bar line, termination processes new line, and controls described line taking module from described memorizer
Source needed for the M+N bar line of reading process；And
Resynchronisation trigger module, for touching when described display output generator will export M+N bar of line
Sending out graphics video post-processing module described starts to process the M+N bar line；
Described display processing unit also includes that TV signal keeps module, is positioned at described graphics video post-processing module or institute
State in display output generator, for producing the pixel of M+1 to M+N-1 bar line voluntarily.
13. 1 kinds of TV signal grasping means, including:
Memory write resume module will appear from overflow to finding during M bar of line of an image；
Described memory write module determines next hyposynchronous the M+N bar line according to the situation of overflow；
Described memory write module sends and will i.e. will appear from the information of overflow and next hyposynchronous M+N bar of line
Information is to television system handling module；
Described television system handling module suspends the pixel that crawl is new, and waits the arrival of M+N bar of line；
The M bar line is write back memorizer by described memory write module, and produces the residual pixel of M bar of line voluntarily；
Described television system handling module waits until the M+N bar line, starts to capture pixel；And
Described memory write module, until again transmitting data, starts to write to memorizer the M+N bar line.
14. methods as claimed in claim 13, it is characterised in that described TV signal is to export TV from another
The video output device of signal captures.
15. 1 kinds of media players, including:
Central processing unit, is configured to the operation being responsible for processing software, controls bus process scheduled media by I/O and broadcasts
Put each device in device to realize multi-media player function；
Video input device, is configured to obtain video flowing from outside and be written into memorizer；
Video decoder, is configured to described video input device is write the video flowing of described memorizer according to coding
Standard is decoded into incompressible frame figure or field figure；
Described memorizer, stores the video flowing of described video input device write；
Display processing unit, including graphics video after-treatment device and display output generator, wherein:
Described display output generator includes:
Overflow judge module, during for judging the M bar of line processing an image, whether will appear from underflow；
Resynchronisation line determines module, determines next hyposynchronous the M+N bar line of needs according to the situation of underflow；
Television system generation module, meets display for the output generation receiving graphics video post-processing module
The video data of display output, for the correct display of display；
Described graphics video after-treatment device includes:
Described graphics video post-processing module, for carrying out post processing to the source decoded by described video decoder
And export to described display output generator；
Stop and resynchronisation line traffic control module, be used for learning when underflow will occur, after described graphics video
After processing module has processed the M bar line, termination processes new line, and controls described graphics video post-processing module from described
Source needed for the M+N bar line of memorizer reading process；
Described display processing unit also includes that TV signal keeps module, is positioned at described display output generator or is positioned at
Described graphics video after-treatment device, for producing the pixel of M+1 to M+N-1 bar line voluntarily.
16. media players as claimed in claim 15, it is characterised in that described display output generator also wraps
Include resynchronisation judge module, be used for judging whether to export the M+N bar line；Described graphics video after-treatment device
Also include resynchronizing trigger module, for when described resynchronisation judge module judges will to export M+N bar of line
Trigger described graphics video post-processing module and start the M+N bar line of post processing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1487739A (en) * | 2002-03-04 | 2004-04-07 | �����ɷ� | Method and device for bridging different video formats |
| WO2006059654A1 (en) * | 2004-12-01 | 2006-06-08 | Matsushita Electric Industrial Co., Ltd. | Recording medium, reproduction device, program, reproduction method, and integrated circuit |
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| WO2009004806A1 (en) * | 2007-07-04 | 2009-01-08 | Panasonic Corporation | Video recording and reproducing apparatus and its method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487739A (en) * | 2002-03-04 | 2004-04-07 | �����ɷ� | Method and device for bridging different video formats |
| WO2006059654A1 (en) * | 2004-12-01 | 2006-06-08 | Matsushita Electric Industrial Co., Ltd. | Recording medium, reproduction device, program, reproduction method, and integrated circuit |
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