CN103491332B - Display processing unit, media player, display processing method and TV signal grasping means - Google Patents

Abstract

The invention provides a display processing device, which includes a display system generating device and a graphics and video post-processing device. When the display system generation device finds an underflow, determine the M+Nth line of the next synchronization. When the graphics and video post-processing device knows that an underflow is about to occur, it will continue to complete the current Mth line, then directly skip the Nth line, start processing the M+Nth line, and start waiting after the processing is completed. When the display system generation device also processes the M+Nth line, the graphics and video post-processing device returns to the normal working state. During the period from when the display system generating device finds underflow to when the display system generating device also processes the M+Nth line, the display system generating device can repeatedly display the Mth line until the display system generating device also processes the M+Nth line. When there are N lines, it enters the normal working state.

Description

Display processing device, media player, display processing method, and TV signal capture method

technical field

The invention relates to a media player, in particular to a display processing device, a display processing method and a TV signal grabbing method.

Background technique

A set-top box (Set Top Box) or other display-related devices usually include a graphics and video post-processing module and a TV standard generation module. Generally speaking, the graphics and video post-processing module is used to perform post-processing on the decompressed source, such as: combining menus, subtitles and graphics, zooming in or out of images, denoising, adjusting image colors, etc. The TV standard generating module is used to generate video data in a format required by the display standard (for example, PAL, NTSC, HD, 3D) for correct display on the display.

In order to save memory bandwidth, the graphics and video post-processing module is often allowed to directly transmit the processed data to the TV system generation module instead of first writing to the memory and then being read by the latter. However, in the display system, in some cases, the local bandwidth is too large (occupied by other devices), which will cause the bandwidth that the graphics and video post-processing module can use to drop sharply for a short time, so that the graphics and video post-processing module During this period of time, the data processing speed of is lower than the speed required by the TV system generation module and underflow occurs.

In order to solve the underflow situation, the current technical approach is: when the TV standard generation module finds underflow, the graphics and video post-processing module will immediately give up the remaining resources (stored in the memory) required by the line currently being processed. For all requests, proceed to the next line. However, directly giving up the data request violates the storage protocol. The read request protocol requires that after the request is sent, it must first wait for the response and then wait for the request data to come back. Only then can a complete read request protocol be completed. In addition, although directly abandoning the data request can allow the graphics and video post-processing device to quickly return to the new line of processing, it also violates the memory protocol and brings instability. For example, after the read request is abandoned, it is answered or the requested data is returned. up. These unexpected treatments may bring new problems, and these may affect all aspects of the aftertreatment device. Historically, this approach could lead to memory requests being erroneous and the entire display system deadlocked from recovery.

In addition, there is often such a situation in the above method that the TV standard generation module is at the end of the current line when it finds an underflow. If the graphics and video post-processing module transfers to the next line at this time, the TV standard generation module will also Going to the next line soon, then it is very likely that the underflow will happen again because the graphics video post-processing module has just started processing this line.

In addition, since the position of the underflow is different each time, the effect on the display terminal may be that the right side of the screen is messy, giving people a bad impression.

Therefore, there is an urgent need for a technical solution that can ensure the stable operation of the graphics and video post-processing module and the TV standard generation module and has less impact on the display terminal.

Contents of the invention

In order to achieve the above object, the present invention provides a display processing device, a media player, a display processing method and a TV signal grabbing method.

In one embodiment, the present invention provides a display processing device. The display processing device includes:

graphics and video post-processing device and display system generation device,

The display system generation device includes:

An overflow judging module, used to judge whether an underflow is about to occur when the M line is processed;

The resynchronization line determination module determines the M+Nth line that needs to be synchronized next time according to the underflow situation;

The graphics and video post-processing device includes:

A graphics and video post-processing module, configured to post-process the decompressed source and directly output it to the display system generating device;

The suspension and resynchronization line control module is used to suspend the graphics and video post-processing module to process the lines after the M line when the underflow is about to occur, and control the graphics and video post-processing module to read and process the M+N lines from the memory the required source;

The display processing device also includes a TV signal holding module, which is located in the graphics and video post-processing device or the display system generating device, and is used to generate M+1 to M+N-1 lines of pixels by itself.

In one embodiment, the display processing device may further include a TV standard grabbing module, and the TV standard grabbing module grabs a TV signal from another video output device that outputs TV signals, and uses it as the graphic video post One of the inputs to the processing device.

In one embodiment, the present invention provides a display processing method. The display processing methods include:

The display system generating device judges that the Mth line is about to underflow;

The display system generating device determines the M+Nth line of the next synchronization;

The display system generating device notifies the graphics and video post-processing device of the information about to underflow and the M+Nth line of the next synchronization;

The graphics and video post-processing device continues to complete the post-processing of the remaining pixels of the Mth line;

The graphics and video post-processing device pauses to process new lines;

The display system generating device or the graphics and video post-processing device generates M+1 to M+N-1 lines of pixels by itself; and

The graphics video post-processing means reads from memory the required source for the M+Nth line to be post-processed.

In another embodiment, the present invention provides a display processing device, comprising:

Graphics and video post-processing module, display system generating device and line taking device, wherein:

The graphics and video post-processing module is used to post-process the decompressed source, store the post-processed pixels into the memory, and take out the source to be processed from the memory;

The display system generation device includes:

An overflow judging module, used to judge whether an underflow is about to occur when the M line is processed;

The resynchronization line determination module determines the M+Nth line that needs to be synchronized next time according to the underflow situation;

Resynchronization judging module for judging whether the M+Nth line is about to be output;

TV standard generating module, used to receive the output of the line taking device and generate video data conforming to the display standard of the display for correct display of the display;

The take-up device includes:

a line fetching module, configured to read the post-processed pixels from the memory and transmit them to the TV standard generation module;

Suspend and resynchronize the line read control module, be used for knowing that when underflow is about to take place, stop processing new lines after the Mth line has been processed by the graphics and video post-processing module, and control the line fetching module from the Memory reads the sources needed to process the M+Nth line; and

A resynchronization triggering module, configured to trigger the graphics and video post-processing module to start processing the M+Nth line when the display system generating device is about to output the M+Nth line.

The display processing device also includes a TV signal holding module, which is located in the graphics and video post-processing device or the display system generating device, and is used to generate M+1 to M+N-1 lines of pixels by itself.

In yet another embodiment, the present invention provides a method for grabbing a TV signal, the method comprising:

Write the memory module and process to the Mth line and find that an overflow is about to occur;

The write memory module determines the M+Nth line of the next synchronization according to the overflow situation;

The write memory module informs the TV system capture module of the information about to overflow and the M+N line of the next synchronization;

The TV standard capture module pauses to capture new pixels, and waits for the arrival of the M+Nth line;

The write memory module writes the Mth line back to the memory, and generates the remaining pixels of the Mth line by itself;

The TV standard capture module waits until the M+Nth line, and starts to capture pixels; and

The write memory module waits until the TV system capture module transmits data to it again, and starts to write the M+Nth line to the memory.

In yet another embodiment, the present invention provides a media player. This media player includes:

The central processing unit is configured to be responsible for processing the operation of the software, and to process and schedule each device in the media player through the I/O control bus to realize the multimedia playback function;

A video input device configured to obtain a video stream from the outside and write it into a memory;

A video decoding device configured to decode the video stream written into the memory by the video input device into an uncompressed frame image or field image according to a coding standard;

The memory stores the video stream written by the video input device;

A display processing device, including a graphics and video post-processing device and a display system generating device, wherein:

The display system generation device includes:

An overflow judging module, used to judge whether an underflow is about to occur when the M line is processed;

The resynchronization line determination module determines the M+Nth line that needs to be synchronized next time according to the underflow situation;

The TV standard generation module is used to receive the output of the graphics and video post-processing module and generate video data conforming to the display standard for correct display of the display;

The graphics and video post-processing device includes:

The graphics and video post-processing module is used to post-process the source decoded by the video decoding device and output it to the display system generating device;

Suspend and resynchronize the line control module, be used for knowing that when underflow is about to take place, stop processing the new line after the Mth line has been processed by the graphics and video post-processing module, and control the graphics and video post-processing module from the Memory reads the source needed to process the M+Nth line.

The display processing device also includes a TV signal holding module, which is located in the graphics and video post-processing device or the display system generating device, and is used to generate M+1 to M+N-1 lines of pixels by itself.

The above-mentioned technical solution of the present invention avoids the situation of destroying the memory protocol, so that the uncertainty of the whole design is smaller, the design is more stable, and the robustness is better. The technical solution of the present invention sacrifices several lines, and buys more time for the latter, so that the possibility of underflow occurring later is smaller than that of the previous proposal. And from the perspective of the display terminal, most of the lines are complete lines. Compared with the uneven horizontal lines drawn by the display terminal in the prior art, especially the messy situation on the right side of the picture, the appearance of the picture displayed by the present invention is significantly different. improve.

Description of drawings

Figure 1 shows a media player according to an embodiment of the present invention;

FIG. 2A shows a display processing device according to an embodiment of the present invention;

FIG. 2B shows a display processing device according to an embodiment of the present invention;

FIG. 3A shows a flow chart of display processing according to an embodiment of the present invention;

Fig. 3B shows a flow chart of display processing according to an embodiment of the present invention;

Fig. 4 shows a display processing device according to an embodiment of the present invention;

Fig. 5 shows a display processing device according to an embodiment of the present invention;

Figure 6 shows a TV signal grabbing device according to an embodiment of the present invention; and

Fig. 7 shows a flow chart of TV signal capture according to an embodiment of the present invention.

detailed description

Fig. 1 shows a media player according to an embodiment of the present invention. The media player 10 may be, but not limited to, a set-top box, DVD player, NMP player, high-definition player, and the like. In one embodiment, the media player includes a display processing device 100, a video decoding device 102, a drawing device 104, a video input device 106, a central processing unit (CPU) 108, an input and output control bus (I/O control bus) 110 , a storage bus and a controller 112 , and a memory 114 .

The central processing unit 108 is configured to be responsible for processing the running of software, and through the I/O control bus 110 to process and schedule each device to realize the function of multimedia playback. The I/O control bus 110 serves as a bridge for controlling each device by reading and writing the I/O registers of each device. The memory 114 is used to temporarily store the data required by each device and the central processing unit 108 during the operation of the media player. In one embodiment, memory 114 is off-chip memory. The storage bus and controller 112 is used as a bridge for exchanging data between devices, the central processing unit and the memory, and has two main functions, that is, bus arbitration and converting the internal storage bus into an off-chip memory bus. The video input device 106 is configured to obtain a video stream from the outside and write it into the memory. The video input device 106 is controlled by the central processing unit from the bus F of the I/O control bus 110, and the video stream is obtained from the external bus M. Through the internal Memory bus J writes the video stream to memory 114 . In one embodiment, the video input device 106 can be a USB, SATA, SD, CF interface, an external U disk, a mobile hard disk, a flash card, or a communication device to obtain video streams from satellite/cable TV, etc. The drawing device 104 includes a drawing engine for processing menus, subtitles or game screens. The video decoding device 102 is a device for decoding the video stream written by the video input device 106 into the memory 114 into uncompressed frame images or field images according to encoding standards such as mpeg2, rmvb, etc.

In one embodiment, only one of the video decoding device 102 (including the video input device 106 ) and the drawing device 104 may exist. In another embodiment, the functions of the video decoding device 102 and the graphics device 104 can be handled by the CPU 108 instead.

The display processing device 100 is used for post-processing the frame image or field image decompressed by the video decoding device 102 and generating video data conforming to the display format of the display for correct display on the display. Display formats include, but are not limited to, PAL, NTSC, HD, 3D and other formats. The display processing device 100 includes a graphics and video post-processing device 103 according to an embodiment of the present invention and a display format generating device 101 according to an embodiment of the present invention. In the display processing device 100 provided by the present invention, when the display system generating device 101 finds an underflow, the graphics and video post-processing device 103 will continue to complete the current Mth line, and then directly skip N lines and start processing the Mth line. +N lines, wait after the processing is completed. When the display system generating device 101 also processes the M+Nth line, the graphics and video post-processing device 103 returns to the normal working state. During the period from when the display system generating device 101 finds an underflow to when the display system generating device 101 also processes the M+Nth line, the display system generating device 101 can repeatedly display the Mth line until the display system generating device 101 also processes the M+Nth line. It enters the normal working state when M+N lines are processed.

FIG. 2A shows a display processing device 100 according to an embodiment of the present invention. The display system generation device 101 in the display processing device 100, in addition to the functional modules that can be realized by the TV system generation module 205 in the prior art, also includes a first data receiving and sending module 201, a resynchronization line determination module 202 , TV signal holding module 203 , resynchronization judging module 204 and overflow judging module 206 . The graphics and video post-processing device 103 in the display processing device 100, in addition to the functional modules that can be realized by the graphics and video post-processing module in the prior art, also includes a second data receiving and sending module 207, a suspension and resynchronization line read Take the control module 208, the resynchronization trigger module 209, and the graphics and video post-processing module 210. In one embodiment, the graphics and video post-processing device 103 obtains the data source from the memory, and directly inputs the post-processed data to the display system generating device 101 .

The overflow judging module 206 is used for judging that an underflow is about to occur. For example, when the display system generating device 101 reaches the Mth line, the overflow judging module 206 finds that an underflow may occur. The re-synchronization line determining module 202 determines the starting line that needs to be synchronized next time, that is, the M+Nth line, according to the underflow condition. In one embodiment, N is determined by the resynchronization line determination module 202 according to the underflow condition. In an embodiment, N may also be preset. At this time, the first data receiving and sending module 201 sends the information that underflow is about to occur and the starting line (that is, the M+Nth line) of the next synchronization to the second data receiving and sending module of the graphics and video post-processing device 103. sending module 207 . After the graphics and video post-processing device 103 receives the above information, the graphics and video post-processing module 210 continues to complete the processing of the remaining pixels of the Mth line. Suspend and resynchronize the line read control module 208 after the remaining pixels of the Mth line have been processed by the graphics and video post-processing module 210, suspend the graphics and video post-processing module 210 to process a new line, and read from the memory to do the Mth line Source needed for +N lines. At the same time, although the graphics and video post-processing device 103 has suspended the processing of the new line, since the display system generating device 101 needs to output the TV signal in real time, the TV signal holding module 203 is configured to generate the graphics and video post-processing device 103 by itself. 103 pixels that couldn't be processed in time. That is, the TV signal maintaining module 203 will generate pixels during the M+1 to M+N-1 lines by itself, so as to maintain the normal output of the TV signal. In one embodiment, the television signal holding module 203 may repeatedly output the pixels of the Mth line during this period, and may also generate any pixels by itself during this period. The resynchronization judging module 204 judges whether the display format generator 101 is about to output the M+Nth line. If the judgment is no, the TV signal holding module 203 will continue to generate pixels by itself; if the judgment is yes, the TV signal holding module 203 will stop generating pixels by itself. The first data receiving and sending module 201 informs the graphics and video post-processing device 103 that the display system generating device 101 is about to output the M+Nth line. After the second data receiving and sending module 207 receives the information, the resynchronization triggering module 209 triggers the graphics and video post-processing module 210 to start processing the M+Nth line. The display system generation device 101 then outputs the M+Nth line processed by the graphics and video post-processing device 103 .

It should be noted that the data received and sent by the first data receiving and sending module and the second data receiving and sending module involved in the present invention also include post-processed video data by the graphics and video post-processing device 103 .

In another embodiment, the TV signal holding module 203 may also be located in the graphics and video post-processing device, as shown in FIG. 2B . Similar to the function in FIG. 2A, in order to maintain the normal output of the TV signal, the TV signal holding module 203' in FIG. 203' will generate pixels during M+1 to M+N-1 lines by itself, so as to maintain the normal output of TV signals.

FIG. 3A shows a display processing flow according to an embodiment of the present invention. In order to make the flow chart more concise, in FIG. 3A , the display system generation device is represented by B, and the graphics and video post-processing device is represented by A. In step 301, the display system generation device judges whether an underflow is about to occur. If yes, the display format generation device then executes step 302 . In step 302, the display system generation device determines the M+Nth line for the next synchronization. The display system generation device judges the size of N according to the underflow condition. In step 303, the display system generation device notifies the graphics and video post-processing device of the information about the imminent underflow and the M+Nth line of the next synchronization. In step 304, the graphics and video post-processing device continues to complete the processing of the remaining pixels of the Mth line. In step 305, the graphics and video post-processing device suspends processing new lines, and reads the source required for the M+Nth line to be processed from memory. In step 306, the display system generating device automatically generates the pixels that the graphics and video post-processing device cannot post-process in time and controls the normal output of the TV signal, that is, generates the pixels of M+1 to M+N-1 lines by itself to maintain the TV signal. normal output of the signal. For example, the pixels that generate M+1 to M+N-1 lines by themselves include the pixels that repeatedly output the Mth line during the period from the discovery of underflow to the display system generation device also processing the M+Nth line. Any pixels can be generated by themselves during this time. In step 307, the display system generator determines whether the M+Nth line is about to be output. If yes, proceed to step 308 . In step 308, the display system generation device notifies the graphics and video post-processing device of the information that the M+Nth line is about to be output. In step 309, the graphics and video post-processing device waits for the notification from the display system generating device that the M+Nth line is about to be output. In step 310, after receiving the information that the M+Nth line is about to be output, the graphics and video post-processing device triggers post-processing of the M+Nth line. In step 311, the display system generation device outputs the TV signal of the M+Nth line processed by the graphics and video post-processing device.

FIG. 3B shows a display processing flow according to an embodiment of the present invention. It should be noted that in this embodiment, the generation of M+1 to M+N-1 pixels of the lines by itself is performed by the graphics and video post-processing device. In order to make the flow chart more concise, in FIG. 3B , the display format generation device is represented by B, and the graphics and video post-processing device is represented by A. In step 301, the display system generation device judges whether an underflow is about to occur. If yes, the display format generation device then executes step 302 . In step 302, the display system generation device determines the M+Nth line for the next synchronization. The display system generation device judges the size of N according to the underflow condition. In step 303, the display system generation device notifies the graphics and video post-processing device of the information about the imminent underflow and the M+Nth line of the next synchronization. In step 304, the graphics and video post-processing device continues to complete the processing of the remaining pixels of the Mth line. In step 320, the graphics and video post-processing device pauses to process new lines, and generates M+1 to M+N-1 lines of pixels by itself, so as to maintain the normal output of TV signals. In step 321, it is judged whether the M+Nth line is about to be output. When the judgment is yes, execute step 322, that is, process the M+Nth line after triggering. In step 323, the display system generating device outputs the TV signal of the M+Nth line processed by the graphics and video post-processing device.

The technical scheme of the invention avoids the situation of destroying the memory protocol, so that the uncertainty of the whole design is smaller, the design is more stable, and the robustness is better. The technical solution of the present invention sacrifices several lines, and buys more time for the latter, so that the possibility of underflow occurring later is smaller than that of the previous proposal. And from the perspective of the display terminal, most of the lines are complete lines. Compared with the uneven horizontal lines drawn by the display terminal in the prior art, especially the messy situation on the right side of the picture, the appearance of the picture displayed by the present invention is significantly different. improve.

Fig. 4 shows a display processing device according to another embodiment of the present invention. In one embodiment, the technical solution of the present application can be extended to the display processing device 400 in which the post-processed pixels are first written into the memory, and then the TV standard generation module retrieves the pixels from the memory. Specifically, the display processing device 400 includes a graphics and video post-processing module 401 , a line fetching device 402 and a display format generating device 403 .

In an embodiment, the display format generating device 403 may adopt the display format generating device 101 shown in FIG. 2A . The display system generation device 403 may include an overflow judging module for judging whether an underflow is about to occur when the M line is processed; a resynchronization line determination module for determining the M+N line that needs to be synchronized next time according to the underflow situation ; The TV signal holding module is used to generate the pixels of M+1 to M+N-1 lines by itself; the resynchronization judgment module is used to judge whether the M+Nth line is about to be output; and the TV system generation module is used for The output of the line taking device is received and video data conforming to the display standard of the display is generated for correct display of the display.

The graphics and video post-processing module 401 is used for post-processing the decompressed source, storing the post-processed pixels into the memory, and fetching the source to be processed from the memory.

The line fetching module 402 includes a line fetching module for reading the post-processed pixels from the memory and transmitting them to the television system generation module. In addition, the line fetching module 402 also includes the first data receiving and sending module as shown in Fig. 2A and Fig. 2B; the suspension and resynchronization line reading control module is used to know that when the underflow is about to occur, the graphic video post-processing module 401 stops processing the new line after processing the Mth line, and controls the line fetching module to read the source required for processing the M+Nth line from the memory; The graphics and video post-processing module 401 is triggered to start processing the M+Nth line when the M+Nth line is reached.

In yet another embodiment, corresponding to the technical solution in FIG. 2B , the TV signal holding module can also be located in the graphics and video post-processing module 401 , and is used to generate M+1 to M+N-1 lines of pixels by itself.

The technical solution shown in FIG. 4 has the following differences from the technical solutions shown in FIGS. 2A and 2B . Since the display system generating device 101 needs to generate TV signals in real time, the technical solutions in Fig. 2A and Fig. 2B have higher requirements on the processing frequency of the graphics and video post-processing module 103. Usually, the graphics and video post-processing module 103 and the display system generating device 101 They are matched by lines, that is, the graphics and video post-processing module 103 only has one line of time to perform all the tasks. The advantage of the technical solution shown in FIG. 4 is that the display system generation device 403 can be isolated from the graphics and video post-processing module 401 . The graphics and video post-processing module 401 can first store the post-processed pixels in the memory, and the work of fetching the lines is processed by the fetching device 402 . Therefore, the graphics and video post-processing module 401 is equivalent to buffering time. However, compared with the technical solutions shown in FIGS. 2A and 2B , the technical solution shown in FIG. 4 occupies a larger bandwidth. Therefore, technicians can adopt targeted technical solutions according to different needs and actual application conditions.

FIG. 5 shows a display processing device 500 according to another embodiment of the present invention. An application scenario of the display processing apparatus 500 in this embodiment is picture-in-picture. The display processing device 500 captures images from other video output devices 504 in addition to obtaining data sources from the memory, so as to realize the function of picture-in-picture or realize the function of multiple display screens. The other video output device 504 may be any device capable of outputting television signals, such as a video camera, a computer, and the like. The display processing device 500 may include a TV standard capturing module 501 , a graphics and video processing device 502 and a display standard generating device 503 . The TV standard capture module 501 is used to receive TV signals from another video output device, and output the captured pixels to the graphics and video processing device 502 . The graphics and video processing device 502 can also obtain the source image from the memory at the same time, so as to realize playing multiple images in the terminal player. Wherein, the graphics and video processing device 502 and the display format generation device 503 may be the graphics and video post-processing device 103 and the display format generation device 101 in FIG. 2A and FIG. 2B .

FIG. 6 shows a TV signal grabbing device 600 according to an embodiment of the present invention. The television signal grabbing apparatus 600 may be an extension of the scene shown in FIG. 5 . Because the TV system capture module 601 captures real-time images from another video output device 604, the TV system capture module is always in the state of real-time processing, and when the write memory module 602 cannot keep up with the speed of writing memory , overflow occurs. With reference to the underflow processing method discussed in FIG. 2A, FIG. 2B, FIG. 3A, and FIG. 3B of the present invention, when the write memory module 602 processes to the Mth line and finds that overflow may occur, the write memory module 602 situation to determine the line M+N of the next synchronization, and tell the TV system capture module 601 about the overflow information and the line M+N of the next synchronization to make it pause to capture new pixels, and wait until the M+th Grab pixels when N lines arrive. During the suspension of line fetching, the writing memory module 602 generates the remaining pixels of the Mth line by itself and waits for the TV standard capturing module 601 to transmit data to it again.

Fig. 7 shows a TV signal capturing process according to an embodiment of the present invention. In order to make the flow chart more concise, in FIG. 7 , the TV standard capturing module is represented by C, and the memory writing module is represented by D. In step 701, the write memory module 602 processes to the Mth line and finds that overflow may occur. In step 702, the write memory module 602 determines the M+N line for the next synchronization according to the overflow condition. In one embodiment, N is determined according to overflow conditions. In an embodiment, N may also be preset. In step 703 , the write memory module 602 notifies the TV system capture module 601 of the information about overflow and the M+Nth line of the next synchronization. In step 704, the TV system capturing module 601 pauses capturing new pixels, and waits for the arrival of the M+Nth line. In step 705, at the same time, the write memory module 602 writes the Mth line back to the memory, and generates the remaining pixels of the Mth line by itself. In step 706, the TV system capture module 601 waits until the M+Nth line, and starts to capture pixels. In step 707, the write memory module 602 waits until the TV system capture module 601 transmits data to it again, and starts to write the M+Nth line into the memory.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, rather than as a limitation to the present invention, as long as within the scope of the spirit of the present invention, the above-described embodiments Changes and modifications will fall within the scope of the 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.