Image display device, image display system, and image display method

Patent metadata

Field	Value
Publication number	US-10002559-B2
Application number	US-201715654325-A
Country	US
Kind code	B2
Filing date	Jul 19, 2017
Priority date	Jul 12, 2012
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

An image display device includes a display unit that includes a plurality of display lines, an image data input unit that receives image data including data for each display line, and an image data transmission switching circuit that transmits the image data to the display unit.

First claim

The invention claimed is:

1. An image display device that constitutes one of a plurality of image display devices that are arranged in a line, the image display device comprising:
a display unit that includes a plurality of display lines;
a detection circuit that judges whether the image display device is installed at an odd-numbered level or at an even-numbered level counted from an image display device arranged at an end among the plurality of image display devices by detecting a predetermined position information signal output from another image display device;
an image data input unit that receives image data including data for each display line; and
an image data transmission switching circuit that switches a transmission order of the data for each display line in accordance with whether the image display device is installed at the odd-numbered level or at the even-numbered level counted from the image display device arranged at the end, and transmits to the display unit the image data including the data for each display line whose transmission order is switched,
wherein the display unit displays the transmitted image data.

2. The image display device according to claim 1 , wherein the detection circuit judges that the image display device is installed at an odd-numbered level counted from the image display device arranged at the end when the detection circuit has detected the predetermined position information signal, and
the detection circuit judges that the image display device is installed at an even-numbered level counted from the image display device arranged at the end when the detection circuit has not detected the predetermined position information signal.

3. The image display device according to claim 1 , further comprising:
a signal output control circuit that instructs whether to output a position information signal from the image display device in accordance with a detection result by the detection circuit.

4. The image display device according to claim 3 , further comprising:
a signal output unit that outputs the position information signal in a case of the signal output control unit instructing output of the position information signal.

5. The image display device according to claim 4 , further comprising:
a display direction switching control circuit that instructs switching of a vertical display direction to the display unit in accordance with the detection result by the detection circuit.

6. The image display device according to claim 5 , wherein the detection circuit outputs a signal indicating the detection result to the signal output control circuit, the display direction switching control circuit, and the image data transmission switching circuit.

7. The image display device according to claim 5 , wherein if the detection result indicates detection of the predetermined position information signal, then the display direction switching control circuit outputs to the display unit a signal instructing the display direction to be one of top-to-bottom and bottom-to-top in the vertical direction, and
wherein if the detection result indicates non-detection of the predetermined position information signal, then the display direction switching control circuit outputs to the display unit a signal instructing the display direction to be the other of top-to-bottom and bottom-to-top in the vertical direction.

8. The image display device according to claim 1 , wherein the position information signal detected by the detection circuit comprises an optical signal representing predetermined data, and
wherein the detection circuit comprises:
a photoelectric conversion element that converts the optical signal to an electrical signal; and
a signal processing circuit for determining based on the electrical signal, whether the predetermined position information signal has been input to the image display device.

9. The image display device according to claim 1 , wherein if the detection result indicates detection of the predetermined position information signal, then the image data transmission switching circuit transmits the image data of each line to the display unit from one of top-to-bottom and bottom to top in the vertical direction, and
wherein if the detection result indicates non-detection of the predetermined position information signal, then the image data transmission switching circuit transmits the image data of each line to the display unit from the other of top-to-bottom and bottom-to-top in the vertical direction.

10. The image display device according to claim 1 ,
wherein the position information signal is an optical radio signal, and
the detection circuit detects a predetermined optical radio signal that is incident from a first direction along a vertical display direction as the position information signal.

11. The image display device according to claim 1 ,
wherein the position information signal is a wired signal, and
the detection circuit detects a predetermined wired signal as the position information signal, the predetermined wired signal being input from a predetermined input terminal that is associated with a first direction along a vertical display direction.

12. A method for an image display device, the image display device including a display unit, the display unit including a plurality of display lines, and the image display device constituting one of a plurality of image display devices that are arranged in a line, the method comprising:
judging whether the image display device is installed at an odd-numbered level or at an even-numbered level counted from an image display device arranged at an end among the plurality of image display devices by detecting a predetermined position information signal output from another image display device;
receiving image data including data for each display line;
switching a transmission order of the data for each display line in accordance with whether the image display device is installed at the odd-numbered level or at the even-numbered level counted from the image display device arranged at the end;
transmitting to the display unit the image data including the data for each display line whose transmission order is switched; and
displaying the transmitted image data by the display unit.

13. An image display device that constitutes one of a plurality of image display devices that are arranged in a line, the image display device comprising:
a display unit that includes a plurality of display lines;
an image data input unit that receives image data including data for each display line; and
an image data transmission switching circuit that transmits to the display unit the image data including the data for each display line whose transmission order is from one of top-to-bottom and bottom-to-top if the image display device is installed at an odd-numbered level counted from an image display device arranged at an end among the plurality of image display devices, and transmits to the display unit the image data including the data for each display line whose transmission order is from the other of top-to-bottom and bottom-to-top if the image display device is installed at an even-numbered level counted from the image display device arranged at the end,
wherein the display unit displays the transmitted image data.

14. The image display device according to claim 1 , wherein the plurality of image display devices are arranged side-by-side in a vertical display direction.

15. The image display device according to claim 14 , wherein each image display device of the plurality of image display devices is disposed at in interval w

Assignees

• Nec Display Solutions Ltd

Inventors

• KANO Nozomu

Classifications

• G09G2370/18

  Use of optical transmission of display information · CPC title

• G09G2360/122

  Tiling · CPC title

• G09G2320/10

  Special adaptations of display systems for operation with variable images · CPC title

• G09G2300/026

  Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions · CPC title

• G06F3/1446 Primary

  display composed of modules, e.g. video walls · CPC title