CN111124341A - Method and device for synchronous display of double-screen different display - Google Patents
Method and device for synchronous display of double-screen different display Download PDFInfo
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- CN111124341A CN111124341A CN201911365359.8A CN201911365359A CN111124341A CN 111124341 A CN111124341 A CN 111124341A CN 201911365359 A CN201911365359 A CN 201911365359A CN 111124341 A CN111124341 A CN 111124341A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 19
- 230000002159 abnormal effect Effects 0.000 claims abstract description 4
- 230000009977 dual effect Effects 0.000 claims abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
- G06F3/1431—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display using a single graphics controller
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
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Abstract
The invention relates to a method and a device for synchronous display of double-screen different displays, which are applied to scenes needing double-screen synchronous display of an SOC display interface, wherein the displayed contents can be the same or different, and the method comprises the following steps: identifying the video data stored in the first cache space and the second cache space, and issuing an abnormal display synchronous display instruction if the video data are different; merging images in the video data corresponding to the first cache space and the second cache space into a complete image and generating a display control time sequence of the complete image; and outputting the complete image to a corresponding display interface by using a single video display channel. The invention has the beneficial effects that: the invention has the beneficial effects that: only one video display channel is needed, so that the area of a chip DIE is saved, and the cost is saved; the real-time performance and the synchronism of the video data are ensured; the dual screen may display image content that is not possible.
Description
Technical Field
The invention relates to the field of SOC chip design, in particular to a method and a device for synchronous display of double-screen different displays.
Background
With the increasingly complex application scenes of the SOC, different contents need to be synchronously displayed on two screens many times, for example, images respectively transmitted by two cameras are displayed on the two screens in real time.
However, in the current technical scheme, two different images are transmitted through two independent video display paths, and the current scheme has certain influence on real-time performance and synchronism.
Disclosure of Invention
The present invention is directed to solve at least one of the technical problems in the prior art, and provides a method and an apparatus for dual-screen simultaneous display, which saves the DIE area of the chip and ensures the real-time performance and the synchronization performance.
The technical scheme of the invention comprises a method for synchronously displaying double different display screens, which is characterized in that: s100, identifying the video data stored in the first cache space and the second cache space, and issuing an abnormal display synchronous display instruction if the video data are different; s200, merging the images in the video data corresponding to the first cache space and the second cache space into a complete image and generating a display control time sequence of the complete image; and S300, outputting the complete image to a corresponding display interface by using a single video display channel.
According to the method for synchronous display of the dual-screen different display, the first cache space and the second cache space are arranged in the double-rate synchronous dynamic random access memory.
The method for synchronously displaying the double-screen different display, wherein the method further comprises the following steps: and if the video data stored in the first cache space and the second cache space are not subjected to the different display, taking out the video data from the first cache space or the second cache space, and displaying the picture data in the video data through the corresponding interface.
According to the method for synchronously displaying the two different screens, S200 specifically includes: and taking out the images from the first cache space and the second cache space, combining the two images into a complete image from left to right, and generating a display control time sequence from the combined image.
According to the method for synchronously displaying the two different screens, S300 specifically includes: and transmitting the complete image through the single channel, and displaying the complete image through a corresponding display interface according to the display control time sequence.
The technical scheme of the invention also comprises a device for synchronously displaying the double-screen different displays, which is used for realizing any one of the methods, and is characterized in that: the storage device is used for storing the video data through the first cache space and the second cache space; the display controller is used for acquiring the picture data from the first cache space and the second cache space and combining the picture data into a complete image; the time sequence controller is used for generating a corresponding display control time sequence for the complete picture and outputting the complete picture to the display control time sequence and the complete picture through a single video display channel; and the interface controller is used for receiving the display control time sequence and the complete picture and displaying the complete picture on a corresponding display device.
According to the device for synchronously displaying the double-screen different display, two consistent interface controllers are set, and the interface controllers are used for outputting video data in corresponding interface formats.
The invention has the beneficial effects that: only one video display channel is needed, so that the area of a chip DIE is saved, and the cost is saved; the real-time performance and the synchronism of the video data are ensured; the dual screen may display image content that is not possible.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention;
FIG. 2 is a flow chart of a dual-screen display synchronization display according to an embodiment of the present invention;
fig. 3 shows a general flow diagram according to an embodiment of the invention.
Reference numerals: the display device comprises a storage device 100, a first cache space 101, a second cache space 102, an SOC chip 200, a display controller 201, a timing controller 202, a single display path 203, a first interface controller 204, a second interface controller 205, a first display device 301 and a second display device 302.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly defined, terms such as set, etc. should be broadly construed, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the detailed contents of the technical solutions.
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention. The storage device 100 includes a first buffer space 101 and a second buffer space 102, and stores corresponding video data, and the video data is transmitted in the form of picture data when being transmitted. The SOC chip 200 includes a display controller 201, a timing controller 202, a single display path 203, a first interface controller 204 and a second interface controller 205, wherein the display controller merges the pictures sent by the first buffer space 101 and the second buffer space 102, where the merging mode is left-right merging to obtain a complete picture, the timing controller 202 transmits the left half row data and the right half row data of the picture and the control signal to the first interface controller 204 and the second interface controller 205 through the single display path 203, respectively, where the first interface controller 204 and the second interface controller 205 are the same interface controller, and the first interface controller 204 and the second interface controller 205 send the received picture data to the corresponding first display device 301 and the second display device 302 for display.
Fig. 2 is a flow chart of a dual-screen display synchronous display according to an embodiment of the invention. In the DDR, two different buffer spaces exist for storing two image data to be displayed, respectively. The display controller takes the image data from the two buffer spaces and combines the two images into a complete image. And transmitting the combined image data to a timing controller to generate a display control timing sequence. Then the time schedule controller transmits the left half-row and right half-row data and the control signal to the two output interface controllers respectively, and finally the two display output interfaces output the video data with the corresponding interface formats respectively. Because the two interface controllers are the same, the processing time of the paths is consistent, and the real-time performance and the synchronization performance are ensured.
Fig. 3 shows a general flow diagram according to an embodiment of the invention. The process comprises the following steps: s100, identifying the video data stored in the first cache space and the second cache space, and issuing an abnormal display synchronous display instruction if the video data are different; s200, merging the images in the video data corresponding to the first cache space and the second cache space into a complete image and generating a display control time sequence of the complete image; and S300, outputting the complete image to a corresponding display interface by using a single video display channel.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
1. A method for synchronous display of dual-screen different display is characterized in that:
s100, identifying the video data stored in the first cache space and the second cache space, and issuing an abnormal display synchronous display instruction if the video data are different;
s200, merging the images in the video data corresponding to the first cache space and the second cache space into a complete image and generating a display control time sequence of the complete image;
and S300, outputting the complete image to a corresponding display interface by using a single video display channel.
2. The method of claim 1, wherein the first buffer space and the second buffer space are disposed in a double rate synchronous dynamic random access memory.
3. The method for synchronous display of dual displays according to claim 1, further comprising: and if the video data stored in the first cache space and the second cache space are not subjected to the different display, taking out the video data from the first cache space or the second cache space, and displaying the picture data in the video data through the corresponding interface.
4. The method for synchronous display of dual-screen displays according to claim 1, wherein the S200 specifically includes:
and taking out the images from the first cache space and the second cache space, combining the two images into a complete image from left to right, and generating a display control time sequence from the combined image.
5. The method for synchronous display of dual-screen displays according to claim 1, wherein the S300 specifically includes:
and transmitting the complete image through the single channel, and displaying the complete image through a corresponding display interface according to the display control time sequence.
6. A device for synchronous display of dual-screen displays, which is used for implementing the method of any one of claims 1 to 5, and is characterized in that:
the storage device is used for storing the video data through the first cache space and the second cache space;
the display controller is used for acquiring the picture data from the first cache space and the second cache space and combining the picture data into a complete image;
the time sequence controller is used for generating a corresponding display control time sequence for the complete picture and outputting the complete picture to the display control time sequence and the complete picture through a single video display channel;
and the interface controller is used for receiving the display control time sequence and the complete picture and displaying the complete picture on a corresponding display device.
7. The apparatus for dual-screen differentiated display synchronous display according to claim 1, wherein the interface controller is configured to be two identical, and the interface controller is configured to output video data in a corresponding interface format.
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| CN201911365359.8A CN111124341A (en) | 2019-12-26 | 2019-12-26 | Method and device for synchronous display of double-screen different display |
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| CN201911365359.8A CN111124341A (en) | 2019-12-26 | 2019-12-26 | Method and device for synchronous display of double-screen different display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115599328A (en) * | 2022-07-26 | 2023-01-13 | 江苏威尔曼科技有限公司（Cn） | Elevator display system of two different display screens based on uniprocessor |
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| CN102098453A (en) * | 2010-12-13 | 2011-06-15 | 广东威创视讯科技股份有限公司 | Video streaming control system of multi-screen processor cascading extended system |
| CN103533287A (en) * | 2013-10-15 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Video processing method and device |
| CN106357998A (en) * | 2015-11-18 | 2017-01-25 | 深圳艾科创新微电子有限公司 | OSD image display processing device |
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- 2019-12-26 CN CN201911365359.8A patent/CN111124341A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102098453A (en) * | 2010-12-13 | 2011-06-15 | 广东威创视讯科技股份有限公司 | Video streaming control system of multi-screen processor cascading extended system |
| CN103533287A (en) * | 2013-10-15 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Video processing method and device |
| CN106357998A (en) * | 2015-11-18 | 2017-01-25 | 深圳艾科创新微电子有限公司 | OSD image display processing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115599328A (en) * | 2022-07-26 | 2023-01-13 | 江苏威尔曼科技有限公司（Cn） | Elevator display system of two different display screens based on uniprocessor |
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