Image display device and image display method

• US 10,359,984 B2
• Filed: 08/01/2016
• Issued: 07/23/2019
• Est. Priority Date: 11/03/2015
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Ma, Xitong, Zhao, Tianyue, Wei, Chuang, Zhou, Zhigang
• Primary Examiner(s): Wang, Yi
• Application Number:
  US15/508,262
• Publication Number:
  US 20170286045A1
• Time in Patent Office: 1,086 Days
• Field of Search: None
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G09F 9/3026 Video wall, i.e. stackable semiconductor matrix display modules video wall control systems G06F3/1446, G09G2300/026
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2340/0442 Handling or displaying different aspect ratios, or changing the aspect ratio
• CPC Class Codes: G09G 2340/045 Zooming at least part of an image, i.e. enlarging it or shrinking it
• CPC Class Codes: G09G 2340/0492 Change of orientation of the displayed image, e.g. upside-down, mirrored
• CPC Class Codes: G09G 2370/12 Use of DVI or HDMI protocol in interfaces along the display data pipeline
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/2096 Details of the interface to the display terminal specific for a flat panel suitable for both CRT and flat panel G09G5/006; specific for a CRT G09G1/167
• CPC Class Codes: G09G 5/005 Adapting incoming signals to the display format of the display terminal
• CPC Class Codes: G09G 5/12 Synchronisation between the display unit and other units, e.g. other display units, video-disc players
• CPC Class Codes: G09G 5/42 characterised by the display of patterns using a display memory without fixed position correspondence between the display memory contents and the display position on the screen

Abstract

An image display device and image display method. The image display device includes: a plurality of display screens spliced together, a corresponding gravity sensor integrated in each display screen, a logic circuit electrically connected with each display screen and each gravity sensor respectively, and a memory electrically connected with the logic circuit. The gravity sensor determines a placing direction of a corresponding display screen. The logic circuit automatically adjusts an access sequence of the image information in the memory according to the placing directions of the display screens determined by the gravity sensors, and outputs the accessed image information to the corresponding display screens, so that the image display device can normally display images when the display screens are placed right way up and/or placed up side down.

Claims

1. An image display device, comprising:

a plurality of display screens which are assembled in array so as to form the image display device, a corresponding gravity sensor integrated in each display screen, a logic circuit electrically connected with each display screen and each gravity sensor respectively, and a memory electrically connected with the logic circuit, wherein;

the memory is configured to store image information to be displayed;

the gravity sensor is configured to;

determine a placing direction of a corresponding display screen;

output a first control signal to the logic circuit when the placing direction of the corresponding display screen is determined to be a right-way-up direction; and

output a second control signal to the logic circuit when the placing direction of the corresponding display screen is determined to be an upside-down direction;

the logic circuit is configured to;

when receiving the first control signal, access corresponding image information in the memory according to a first sequence, and output the accessed corresponding image information to the corresponding display screen; and

when receiving the second control signal, access corresponding image information in the memory according to a second sequence opposite to the first sequence, and output the accessed corresponding image information to the corresponding display screen; and

each display screen is configured to display an image according to the received corresponding image information;

wherein each display screen comprises a display panel and a printed circuit board (PCB) bonded with the display panel and the logic circuit is electrically connected with the PCB through a high definition multimedia interface (HDMI).

2. The image display device according to claim 1, wherein

the gravity sensor is integrated in the PCB in the corresponding display screen.

3. The image display device according to claim 2, wherein the logic circuit is configured to:

access the corresponding image information in the memory row by row from top to bottom when receiving the first control signal, wherein each row of the corresponding image information is accessed one by one from left to right; and

access the corresponding image information in the memory row by row from bottom to top when receiving the second control signal, wherein each row of the corresponding image information is accessed one by one from right to left.

4. The image display device according to claim 2, wherein the logic circuit is configured to perform synchronization, magnification and image quality adjustment on the accessed corresponding image information, and output the processed image information to the corresponding display screen.

5. The image display device according to claim 1, wherein the logic circuit includes:

a remote direct memory access (RDMA) component configured to access the image information in the memory.

6. The image display device according to claim 5, wherein the logic circuit is configured to:

access the corresponding image information in the memory row by row from top to bottom when receiving the first control signal, wherein each row of the corresponding image information is accessed one by one from left to right; and

access the corresponding image information in the memory row by row from bottom to top when receiving the second control signal, wherein each row of the corresponding image information is accessed one by one from right to left.

7. The image display device according to claim 1, wherein the memory is a double date rate synchronous dynamic random access memory (DDR SDRAM).

8. The image display device according to claim 1, wherein the first control signal is a high level signal;

and

the second control signal is a low level signal.

9. The image display device according to claim 1, wherein the logic circuit is configured to:

access the corresponding image information in the memory row by row from top to bottom when receiving the first control signal, wherein each row of the corresponding image information is accessed one by one from left to right; and

access the corresponding image information in the memory row by row from bottom to top when receiving the second control signal, wherein each row of the corresponding image information is accessed one by one from right to left.

10. The image display device according to claim 1, wherein the logic circuit is configured to perform synchronization, magnification and image quality adjustment on the accessed corresponding image information, and output the processed image information to the corresponding display screen.

11. An image display method for the image display device according to claim 1, comprising:

determining a placing direction of each display screen among the plurality of display screens;

for a first display screen with a placing direction determined to be a right-way-up direction, accessing first image information corresponding to the first display screen according to a first sequence;

for a second display screen with a placing direction determined to be a upside-down direction, accessing second image information corresponding to the second display screen according to a second sequence that is opposite to the first sequence;

outputting the accessed first image information to the corresponding first display screen, and outputting the accessed second image information to the corresponding second display screen; and

performing image display according to the first image information and the second image information.

12. The image display method according to claim 11, wherein:

for the first display screen with the placing direction determined to be the right-way-up direction, accessing the first image information corresponding to the first display screen according to the first sequence includes;

accessing the corresponding first image information corresponding to the first display, screen row by row from top to bottom, wherein each row of the first image information is accessed one by one from left to right; and

for the second display screen with the placing direction determined to be the upside-down direction, accessing the second image information corresponding to the second display screen according to the second sequence that is opposite to the first sequence, includes;

accessing the corresponding second image information corresponding to the second display screen row by row from bottom to top, wherein each row of the second image information is accessed one by one from right to left.

13. The image display method according to claim 11, wherein outputting the accessed first image information to the corresponding first display screen and outputting the accessed second image information to the corresponding second display screen includes:

performing synchronization, magnification and image quality adjustment on the accessed first image information, and outputting the processed first image information to the corresponding first display screen; and

performing synchronization, magnification and image quality adjustment on the accessed second image information, and outputting the processed second image information to the corresponding second display screen.

14. The image display device according to claim 1, wherein the first control signal is a low level signal;

and

the second control signal is a high level signal.

15. The image display device according to claim 1, wherein the logic circuit is configured to:

access the corresponding image information in the memory row by row from top to bottom when receiving the first control signal, wherein each row of the corresponding image information is accessed one by one from right to left; and

access the corresponding image information in the memory row by row from bottom to top when receiving the second control signal, wherein each row of the corresponding image information is accessed one by one from left to right.

16. The image display device according to claim 1, wherein the logic circuit is configured to:

access the corresponding image information in the memory row by row from bottom to top when receiving the first control signal, wherein each row of the corresponding image information is accessed one by one from right to left; and

access the corresponding image information in the memory row by row from top to bottom when receiving the second control signal, wherein each row of the corresponding image information is accessed one by one from left to right.

17. The image display device according to claim 1, wherein the logic circuit is configured to:

access the corresponding image information in the memory row by row from bottom to top when receiving the first control signal, wherein each row of the corresponding image information is accessed one by one from left to right; and

access the corresponding image information in the memory row by row from top to bottom when receiving the second control signal, wherein each row of the corresponding image information is accessed one by one from right to left.