CN106941618A - Over-scan adaptive display method and device - Google Patents

Abstract

Embodiments of the present invention provide an overscan adaptive display method and device, which are applied to a display device communicatively connected to a source device. By receiving and analyzing the video information sent by the source device, the scanning processing mode in the video information is obtained. And perform scanning processing and displaying on the video data included in the video information according to the scanning processing manner. Thus, overscan adaptive display is realized, and user experience is improved.

Description

Overscan adaptive display method and device

technical field

The present invention relates to the technical field of image display, in particular to an overscan adaptive display method and device.

Background technique

Existing TVs (for example, Internet TVs) are favored by users because of their high configuration, high performance, and low price. In addition to watching daily TV programs, the TV can also be used as a display device to display images sent by the source device, so that users can enjoy the super fun of surfing the Internet, shopping, playing games, etc. on a large screen.

However, existing TVs cannot adaptively perform overscan or underscan processing according to the image signal sent by the source device. Generally, the image is overscanned by default, which will cause incomplete display of the image sent by the source device (image The surroundings are intercepted, for example, when the notebook is connected to the TV, the edge of the desktop will be outside the screen), which seriously affects the user experience.

Contents of the invention

In order to overcome the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an overscan adaptive display method and device, which can perform adaptive display according to whether the signal sent by the source device is overscan or underscan, thereby Improve user experience.

A preferred embodiment of the present invention provides an overscan adaptive display method, the method is applied to a display device communicatively connected to a source device, and the method includes:

receiving video information sent by the source device;

Analyzing the scanning processing method in the video information, and performing scanning processing on the video data in the video information according to the scanning processing method, wherein the scanning processing method includes an overscanning method and an underscanning method;

Display the scanned and processed video data.

A preferred embodiment of the present invention also provides an overscan adaptive display device, the device is applied to a display device communicatively connected to a source device, and the device includes:

a receiving module, configured to receive video information sent by the source device;

A processing module, configured to analyze and obtain a scanning processing mode in the video information, and perform scanning processing on the video data in the video information according to the scanning processing mode, wherein the scanning processing mode includes an overscanning mode and an underscanning mode ;

The display module is used for displaying the scanned and processed video data.

Compared with the prior art, the present invention has the following beneficial effects:

The display device receives the video information sent by the source device, and the video information includes video data and a scanning processing method corresponding to the video data. The received video information is analyzed to obtain a scanning processing method in the video information. The video data is scanned and displayed according to the processing manner. Thus, the display device performs corresponding processing on the received video data according to the signal sent by the source device, so as to adaptively display the video data and improve user experience.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of communication between a display device and a source device provided by a preferred embodiment of the present invention.

FIG. 2 is a schematic block diagram of the display device shown in FIG. 1 .

FIG. 3 is a schematic block diagram of the source device shown in FIG. 1 .

FIG. 4 is a schematic flowchart of an overscan adaptive display method applied to the display device shown in FIG. 1 provided by a preferred embodiment of the present invention.

FIG. 5 is a schematic flowchart of the sub-steps included in step S120 in FIG. 4 .

FIG. 6 is a schematic flowchart of substeps included in substep S122 in FIG. 5 .

FIG. 7 is another schematic flowchart of the sub-steps included in step S120 in FIG. 4 .

FIG. 8 is a schematic block diagram of an overscan adaptive display device provided by a preferred embodiment of the present invention.

Icons: 100-display device; 110-first storage; 120-first storage controller; 130-first processor; 200-source device; 210-second storage; 220-second storage controller; 230-th Two processors; 300-overscan adaptive display device; 310-receiving module; 320-processing module; 321-analysis submodule; 322-scanning submodule; 330-display module.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

Please refer to FIG. 1 , which is a schematic diagram of communication between a display device 100 and a source device 200 provided by a preferred embodiment of the present invention. The display device 100 is communicatively connected with the source device 200 , so that the display device 100 performs data interaction with the source device 200 , and the display device 100 displays the video data sent by the source device 200 . In the embodiment of the present invention, the display device 100 may be, but not limited to, a TV, a micro-projector, and the like. The source device 200 may be, but not limited to, a set-top box, a Blu-ray player, a signal generator, and the like.

Please refer to FIG. 2 , which is a schematic block diagram of the display device 100 shown in FIG. 1 . The display device 100 includes: an overscan adaptive display device 300 , a first memory 110 , a first memory controller 120 and a first processor 130 .

The elements of the first memory 110 , the first storage controller 120 and the first processor 130 are directly or indirectly electrically connected to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The overscan adaptive display device 300 is stored in the first memory 110 , and the overscan adaptive display device 300 includes at least one software function module that can be stored in the first memory 110 in the form of software or firmware. The first processor 130 executes various functional applications and data processing by running software programs and modules stored in the first memory 110, such as the overscan adaptive display device 300 in the embodiment of the present invention, that is, realizes the present invention. An overscan adaptive display method in an embodiment of the invention.

Wherein, the first memory 110 may be, but not limited to, random access memory (Random Access Memory, RAM), read-only memory (Read Only Memory, ROM), programmable read-only memory (Programmable Read-Only Memory, PROM) , Erasable Programmable Read-Only Memory (EPROM), Electric Erasable Programmable Read-Only Memory (EEPROM), etc. Wherein, the first memory 110 is used to store a program, and the first processor 130 executes the program after receiving an execution instruction. The access of the first processor 130 and other possible components to the first memory 110 can be performed under the control of the first memory controller 120 .

The first processor 130 may be an integrated circuit chip, which has a signal processing capability. The above-mentioned first processor 130 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), and the like. It can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

It can be understood that the structure shown in FIG. 2 is only for illustration, and the display device 100 may also include more or less components than those shown in FIG. 2 , or have a configuration different from that shown in FIG. 2 . Each component shown in Fig. 2 may be implemented by hardware, software or a combination thereof.

Please refer to FIG. 3 , which is a schematic block diagram of the source device 200 shown in FIG. 1 . The source device 200 may include a second memory 210 , a second memory controller 220 and a second processor 230 .

Wherein, the hardware configuration of the second memory 210, the second memory controller 220 and the second processor 230 is the same as that of the first memory 110, the first memory controller 120, and the first processor 130 in FIG. 2 , here I won't introduce them one by one.

Please refer to FIG. 4 . FIG. 4 is a schematic flowchart of an overscan adaptive display method applied to the display device 100 shown in FIG. 1 provided by a preferred embodiment of the present invention. The display device 100 is communicatively connected with the source device 200 . The process in FIG. 4 may be implemented by the first processor 130 . The specific flow of the overscan adaptive display method will be described in detail below.

Step S110, receiving the video information sent by the source device 200.

In this embodiment, the step of receiving the video information sent by the source device 200 includes: receiving the video information corresponding to the scanning mode supported by the display device 100 sent by the source device 200 according to the extended display identification data.

In this embodiment, when the source device 200 accesses the display device 100, the display device 100 sends the extended display identification data to the source device 200, so that the source device 200 can obtain the 100 supported scanning methods and corresponding video types. The source device 200 sends video information to the display device 100 according to the scanning mode supported by the display device 100 and the video type corresponding to the scanning mode.

Wherein, the display device 100 stores the extended display identification data, and the specific storage location may be, but not limited to, Nand Flash (flash memory), E2PROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Programming read-only memory), SDRAM (Synchronous Dynamic Random Access Memory, Synchronous Dynamic Random Access Memory), etc.

Wherein, the extended display identification data (Extended Display Identification Data, EDID) is a VESA (Video Electronics Standards Association, Video Electronics Standards Association) standard data format, and the extended display identification data not only includes /television/micro-projection) and its performance parameters, and also includes manufacturer information, such as timing (ie, preferred timing), Monitor Name (monitor name), supported timing list, and supported Audio (audio) information, vendor information, maximum image size, color settings, factory presets, frequency range limitations, etc.

Step S120, analyzing and obtaining the scanning processing mode in the video information, and performing scanning processing on the video data in the video information according to the scanning processing mode.

In this embodiment, the scan processing mode includes an over-scan mode and an under-scan mode. The video information includes video data and auxiliary video information frames sent by the source device 200 . Wherein, video data refers to video content to be played, and the auxiliary video information frame includes various auxiliary information of audio and video. In the implementation of this embodiment, the auxiliary video information frame is sent by the source device 200 to the display device 100 in the form of InfoFrame. Six types of InfoFrame are defined in the standard:

Vendor-Specific InfoFrame(0x01),

Auxiliary Video Information InfoFrame(0x02),

Source Product Description InfoFrame(0x03),

Audio InfoFrame (0x04),

MPEG Source InfoFrame (0x05),

and NTSC VBI InfoFrame(0x06)

In the implementation of this embodiment, the auxiliary video information frame is Auxiliary VideoInformation InfoFrame, AVI InfoFrame for short. When the source device 200 confirms that the display device 100 supports receiving or parsing the auxiliary video information frame, the source device 200 first sends the auxiliary video information frame corresponding to the video data before sending each frame of video data. Include the relevant information of next frame video data in the described auxiliary video information frame, such as, Scan Information (scanning information, such as, underscan (underscan) or overscan (overscan)), ColorSpace (color space, such as, RGB/YCBCR ), Picture Aspect Ratio (aspect ratio, such as, 4:3/16:9), etc.

In this embodiment, the source device 200 sets the value of the scan field in the auxiliary video information frame according to the overscan/underscan information of the sent video data. For example, the value of the scan field is represented by the value of S in the S field, that is to say, the value of S can be used to indicate whether the video data needs to be overscanned or underscanned.

Please refer to FIG. 5 , which is a schematic flowchart of the sub-steps included in step S120 in FIG. 4 . The step S120 may include a sub-step S121 and a sub-step S122.

The sub-step S121 is to analyze the value of the scanning field of the auxiliary video information frame sent by the source device 200 .

In this embodiment, after receiving the auxiliary video information frame, the display device 100 parses to obtain the value of the scan domain and the information of the video data corresponding to the auxiliary video information frame (for example, color space, aspect ratio, etc.) , and complete the configuration according to the information of the video data, so as to display the scanned video data.

The sub-step S122 is to perform corresponding scanning processing on the video data corresponding to the auxiliary video information frame according to the value of the scanning field.

In this embodiment, the value of the scanning domain S may be a first preset value or a second preset value, and different values correspond to different scanning modes. Please refer to the next steps to implement different scanning methods for different values.

Please refer to FIG. 6 , which is a schematic flowchart of the sub-steps included in the sub-step S122 in FIG. 5 . The sub-step S122 may include a sub-step S1221 and a sub-step S1222.

When the value of the scan field S is a first preset value, perform sub-step S1221.

The sub-step S1221 is to scan the received video data.

In the implementation of this embodiment, the first preset value is set to 1. When the display device 100 analyzes and obtains AVI S=1, the overscan bit in the register (register) corresponding to the overscan in the chip (System on Chip, SoC) is configured as 1 by software, and the overscan of the display device 100 The function is turned on to scan the received video data.

When the value of the scan field S is a second preset value, perform sub-step S1222.

The sub-step S1222 is to perform underscan processing on the received video data.

In the implementation of this embodiment, the second preset value is set to 2. When the display device 100 analyzes and obtains AVI S=2, the overscan bit in the register (register) corresponding to the overscan in the chip (System on Chip, SoC) is configured as 0 by software, and the overscan of the display device 100 Disabled to underscan received video data.

In this embodiment, the extended display identification data includes a vendor specific data block (Vendor Specific Data Block, VSDB). The manufacturer-specific data block is used to represent that the display device 100 has the ability to receive and analyze auxiliary video information frames. Thus, the source device 200 detects and obtains the VSDB in the extended display identification data of the display device 100, thereby determining that the display device 100 has the ability to receive and parse InfoFrame. The display device 100 may also configure information such as Deep Color Depth/3D support in the manufacturer-specific information. Among them, the video signal is composed of pixels (pixels), and each pixel is composed of RGB or YUV 3 sub-pixel sub-pixels. Color depth refers to the fact that each sub-pixel is composed of 8 bits, so it will There is 2 to the 8th power, that is, the amount of data of 256. If it is higher than 8bit, such as 10bit/12bit/16bit, it is Deep Color Depth. The higher the value, the greater the amount of data per pixel, and the better the image quality. The display device 100 can configure Deep Color Depth/3D as: Deep Color Depth: 10bit/12bit/16bit; 3D: Frame Packing/Top and Bottom/Side-by-Side, etc., and the 3D configuration can indicate that the display device 100 supports The 3D transmission formats are: frame packing, top and bottom, side by side, etc.

In this embodiment, the extended display identification data further includes video attribute information, and the video attribute information includes a video type supported by the display device 100 and a scanning processing manner corresponding to the video type.

In the implementation of this embodiment, a video attribute data block (Video Capability Data Block, VCDB) is added to the extended Block (block) in the extended display identification data, so that the extended display identification data includes video attribute information. In this way, the source device 200 obtains the display device 100's support for different types of underscan or overscan. The specific configuration is as follows:

PT timing:Support both over-and underscan

IT timing:Always Underscanned

CE timing:Support both over-and underscan

which is:

For PT timing, the display device 100 supports both underscan and overscan operations;

For IT timing, the display device 100 always performs an underscan operation;

For CE timing, the display device 100 supports both underscan and overscan operations.

Please refer to FIG. 7 . FIG. 7 is another schematic flowchart of the sub-steps included in step S120 in FIG. 4 . The step S120 may also include sub-steps S125 and S126.

In the sub-step S125, when the value of the scan field is the third preset value or the display device 100 does not receive the auxiliary video information frame, when the received video type is the first preset video type, The received video data has been scanned.

In this embodiment, the display device 100 obtains the third preset value after analyzing the value of the scanning domain (when the third preset value is set to 0, the analysis obtains AVI S=0) or due to some reasons (such as , signal failure) when the auxiliary video information frame is not received, the video data is scanned according to the video type of the received video data. When the video type is the first preset type, the received video data is scanned. Wherein, the first preset type is CEtiming, CE refers to consumer electronics (Consumer Electronics), CE timing refers to the types supported by consumer electronics (such as OTT boxes, DVD players, etc.), such as 1080p@60Hz.

In the sub-step S126, when the received video type is the second preset video type, underscan processing is performed on the received video data.

In this embodiment, the display device 100 obtains the third preset value after analyzing the value of the scanning domain (when the third preset value is set to 0, the analysis obtains AVI S=0) or due to some reasons (such as , signal failure) when the auxiliary video information frame is not received, and when the video type of the video data is the second preset type, underscan processing is performed on the received video data. Wherein, the second preset type is IT timing, which refers to a type supported by a PC (Personal Computer, personal computer), that is, a notebook/desktop.

In the implementation of this embodiment, the source device 200 will send video data according to the preferred video type included in the extended display identification data, and the preferred video type (PreferredTiming, PT timing) It can be CE timing or IT timing.

In this embodiment, when no video attribute information is added and the received video type is the second preset video type, underscan processing is performed on the received video data.

In this embodiment, when no video attribute information is added to the extended display identification data, the display device 100 performs corresponding scanning processing on the video data according to the received video type. When the video type is the first preset video type, the display device 100 scans the received video data. When the video type is the second preset video type, since the second preset video type requires underscan processing, the display device 100 modifies the extended display identification data in advance, so that the source device 200 considers the second preset The video data of the video type will be subjected to under-scanning processing, so that the display device 100 will perform under-scanning processing after receiving the video data. Wherein, the way of modification may be to set underscan to 1 in the extended display identification data, that is, underscan=1.

Step S130, displaying the scanned video data.

In this embodiment, the display device 100 displays the video data after scanning the received video data and completing the corresponding display configuration.

In the implementation manner of this embodiment, the display device 100 performs data communication with the source device 200 through a high-definition multimedia interface. Among them, the High Definition Multimedia Interface (High Definition Multimedia Interface, HDMI) is an audio/video interface that supports uncompressed all-digital. When the source device 200 is connected to the display device 100 through the high-definition multimedia interface, the source device 200 obtains the extended display identification data of the display device 100 through the DDC pin in the HDMI cable, so as to obtain the display device 100 pair The specific support of audio and video, and send the Preferred Timing configured in the extended display identification data first.

Wherein, the flow of interaction between the display device 100 and the source device 200 is as follows. When the display device 100 detects that there is a signal on the 5V line in the HDMI Cable (cable), the display device 100 sends information to the source device 200 through the HPD line of the HDMI Cable in the form of a low level first and then a high level, with an interval of 100-200ms. When the source device 200 detects the above changes of the HPD line, the source device 200 passes through the DDC (Direct Digital Control, direct digital control) line (2, one clk (Clock, clock) line, one data ( data) line, which is essentially the i2c line) to read the extended display identification data of the display device 100.

In the implementation of this embodiment, the storage location of the extended display identification data is different, and the way for the source device 200 to obtain the extended display identification data will also be different. When the extended display identification data is stored in the Nand Flash, the extended display identification data is loaded from the Nand Flash into the system memory during use; when the extended display identification data is stored in the E2PROM, each HDMI port of the display device 100 corresponds to one E2PROM, and the source device The 200 directly reads the extended display identification data from the E2PROM associated with the corresponding HDMI port; when the extended display identification data is stored in SDRAM, first store the extended display identification data in the array, and when entering the HDMI channel, then store the EDID data in the array Copy to SDRAM.

In this embodiment, the display device 100 is provided with an automatic scan option, an overscan option, and an underscan option, and the method further includes:

In response to the selection operation of the automatic scanning option, perform adaptive scanning processing on the received video data, so that the processed video data can be adaptively displayed on the display device 100;

In response to the selection operation of the overscan option, the received video data is scanned;

In response to selecting the underscan option, underscan processing is performed on the received video data.

In the implementation of this embodiment, the auto-scan option, the over-scan option and the under-scan option may be set on a user interface (User Interface, UI) of the display device 100 . The UI design is as follows:

AUTO, display device 100 adaptive

overscan (non-full-screen display), display device 100 full-screen display off

underscan (full screen display), the display device 100 full screen display is turned on

Therefore, when the user does not know whether the video signal sent by the source device 200 should be underscanned or overscanned, the AUTO option can be selected. When the user determines that the video signal sent by the source device 200 is to be underscanned or overscanned, the corresponding processing option is selected on the display device 100:

When overscan is selected, the display device 100 will turn off the underscan or overscan adaptive function, and always scan the received HDMI signal;

When underscan is selected, the display device 100 will turn off the underscan or overscan adaptive function, and always perform underscan processing on the received HDMI signal.

In this embodiment, when the display device 100 configures overscan/underscan, it will give a prompt to the user, which is specifically described as follows.

When the display device 100 parses and obtains that the Scan Information is overscan, the register of the display device 100 is configured, and the display device 100 enables the overscan mode. At the same time, the driver layer sends an overscan configuration message to the UI, and the UI gives the user the following prompt after receiving the message: "It has been automatically switched to a non-full-screen display (overscan, overscan) mode for you".

When the Scan Information parsed by the display device 100 is underscan, the registers of the display device 100 are configured, and the display device 100 enables the underscan mode. At the same time, the driver layer sends an underscan configuration message to the UI, and the UI gives the user the following prompt after receiving the event: "It has automatically switched to the full-screen display (underscan, underscan) mode for you".

In addition, only when the Scan Information changes, do the corresponding Scan Mode (scanning type) configuration action and send the corresponding Scan Operation message to the UI as a prompt, namely:

The Scan Information corresponding to the current video data is overscan, and if the Scan Information corresponding to the next video data is also overscan, then the display device 100 does not perform scanning configuration and sends a message to the UI for reminder. When the video data is underscan, the operation is the same as above.

Please refer to FIG. 8 , which is a schematic block diagram of an overscan adaptive display device 300 provided by a preferred embodiment of the present invention. The overscan adaptive display device 300 is applied to the display device 100 connected in communication with the source device 200 . The overscan adaptive display device 300 includes: a receiving module 310 , a processing module 320 and a display module 330 .

The receiving module 310 is configured to receive the video information sent by the source device 200 .

The way for the receiving module 310 to receive the video information sent by the source device 200 includes:

The video information corresponding to the scanning mode supported by the display device 100 and sent by the source device 200 according to the extended display identification data is received. In this embodiment, for the steps performed by the receiving module 310, reference may be made to the detailed description of step S110 shown in FIG. 4 .

The processing module 320 is configured to analyze and obtain a scanning processing mode in the video information, and perform scanning processing on the video data in the video information according to the scanning processing mode, wherein the scanning processing mode includes an overscanning mode and an overscanning mode. underscan mode.

The processing module 320 includes: an analysis submodule 321 and a scanning submodule 322 .

The parsing sub-module 321 is configured to parse the value of the scanning field of the auxiliary video information frame sent by the source device 200 .

The scanning sub-module 322 is configured to perform corresponding scanning processing on the video data corresponding to the auxiliary video information frame according to the value of the scanning field.

The manner in which the scanning sub-module 322 performs corresponding scanning processing on the video data corresponding to the auxiliary video information frame according to the value of the scanning field includes:

When the value of the scan field is a first preset value, the received video data has been scanned;

When the value of the scan field is a second preset value, underscan processing is performed on the received video data.

In this embodiment, the display device 100 stores extended display identification data, the extended display identification data includes a manufacturer-specific data block, and the manufacturer-specific data block is used to indicate that the display device 100 has an auxiliary video information frame. receiving and parsing capabilities.

In this embodiment, the display identification data further includes video attribute information, and the video attribute information includes video types supported by the display device 100 and scanning processing modes corresponding to the video types.

The processing module 320 is also used for:

When the value of the scan field is the third preset value or the display device 100 does not receive the auxiliary video information frame, when the received video type is the first preset video type, perform the processing on the received video data Overscan processing;

When the received video type is the second preset video type, underscan processing is performed on the received video data.

In this embodiment, for the steps performed by the processing module 320, reference may be made to the detailed description of step S120 shown in FIG. 4 .

The display module 330 is configured to display the scanned video data.

In this embodiment, for the steps performed by the display module 330 , reference may be made to the detailed description of step S130 shown in FIG. 4 .

To sum up, the embodiments of the present invention provide an overscan adaptive display method and device, which are applied to a display device communicatively connected to a source device. The display device receives the video information sent by the source device, and then performs corresponding scanning processing on the video data in the video information according to the scanning processing method in the video information, and adaptively displays the processed video data on the display device , thereby improving user experience.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (15)

1. one kind overscanning adaptive display method, it is characterised in that methods described is applied to and showing that source device is communicated to connect Show equipment, methods described includes：

Receive the video information that the source device is sent；

Analysis obtains the scan process mode in video information, and according to the scan process mode in the video information Video data is scanned processing, wherein, the scan process mode includes overscanning mode and underdevelopment mode；

Video data after scan process is shown.

2. according to the method described in claim 1, it is characterised in that the video information includes the video that the source device is sent Data and auxiliary video information frame, the analysis obtain the scan process mode in video information, and according to the scan process The step of mode is scanned processing to the video data in the video information includes：

Parse the value of the scanning field for the auxiliary video information frame that the source device is sent；

Corresponding scan process is carried out to the corresponding video data of the auxiliary video information frame according to the value of the scanning field.

3. method according to claim 2, it is characterised in that the value according to the scanning field is to the auxiliary video The step of corresponding video data of information frame carries out corresponding scan process includes：

When the value of the scanning field is the first preset value, overscanning processing is done to the video data of reception；

When the value of the scanning field is the second preset value, underdevelopment processing is done to the video data of reception.

4. the method according to any one of claim 1-3, it is characterised in that the display device, which is stored with, extends display Mark data, the extending display identification data include vendor specific data block, and the vendor specific data block is used to characterize institute State reception and analytic ability that display device possesses auxiliary video information frame.

5. method according to claim 4, it is characterised in that

The extending display identification data also include Video attribute information, and the Video attribute information includes the display device branch The corresponding scan process mode of video type and the video type held.

6. method according to claim 5, it is characterised in that the step for the video information that the reception source device is sent Suddenly include：

Receive the scan mode pair for the display device support that the source device is sent according to the extending display identification data The video information answered.

7. method according to claim 5, it is characterised in that methods described also includes：

When the value of scanning field is the 3rd preset value or the display device is not received by the auxiliary video information frame, connecing When the video type of receipts is the first default video type, overscanning processing is done to the video data of reception；

When the video type of reception is the second default video type, underdevelopment processing is done to the video data of reception.

8. according to the method described in claim 1, it is characterised in that：

The display device enters row data communication by HDMI and the source device.

9. one kind overscanning self adaptation display device, it is characterised in that described device is applied to and showing that source device is communicated to connect Show equipment, described device includes：

Receiver module, for receiving the video information that the source device is sent；

Processing module, for analyzing the scan process mode obtained in video information, and according to the scan process mode to institute State the video data in video information and be scanned processing, wherein, the scan process mode includes overscanning mode and owes to sweep Retouch mode；

Display module, for the video data after scan process to be shown.

10. device according to claim 9, it is characterised in that the video information includes regarding for source device transmission Frequency evidence and auxiliary video information frame, the processing module include analyzing sub-module and scanning submodule；

The analyzing sub-module, the value of the scanning field for parsing the auxiliary video information frame that the source device is sent；

The scanning submodule, enters for the value according to the scanning field to the corresponding video data of the auxiliary video information frame The corresponding scan process of row.

11. device according to claim 10, it is characterised in that the scanning submodule is according to the value pair of the scanning field The mode of the corresponding scan process of the corresponding video data progress of auxiliary video information frame includes：

When the value of the scanning field is the first preset value, overscanning processing is done to the video data of reception；

When the value of the scanning field is the second preset value, underdevelopment processing is done to the video data of reception.

12. the device according to any one of claim 9-11, it is characterised in that the display device, which is stored with to extend, to be shown Show mark data, the extending display identification data include vendor specific data block, and the vendor specific data block is used to characterize The display device possesses reception and the analytic ability of auxiliary video information frame.

13. device according to claim 12, it is characterised in that

The extending display identification data also include Video attribute information, and the Video attribute information includes the display device branch The corresponding scan process mode of video type and the video type held.

14. device according to claim 13, it is characterised in that the receiver module receives regarding for the source device transmission The mode of frequency information includes：

Receive the scan mode pair for the display device support that the source device is sent according to the extending display identification data The video information answered.

15. device according to claim 13, it is characterised in that the processing module is additionally operable to：

When the value of scanning field is the 3rd preset value or the display device is not received by the auxiliary video information frame, connecing When the video type of receipts is the first default video type, overscanning processing is done to the video data of reception；

When the video type of reception is the second default video type, underdevelopment processing is done to the video data of reception.