US Patent No. 9,740,450

IMAGE DISPLAY DEVICE, IMAGE DISPLAY SYSTEM, AND IMAGE DISPLAY METHOD


Patent No. 9,740,450
Issue Date August 22, 2017
Title Image Display Device, Image Display System, And Image Display Method
Inventorship Nozomu Kano, Tokyo (JP)
Assignee NEC DISPLAY SOLUTIONS, LTD., Tokyo (JP)

Claim of US Patent No. 9,740,450

1. An image display device comprising:
a display unit that includes a plurality of display lines;
a detection circuit that detects 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 a detection result by the detection circuit, 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,
wherein the detection circuit judges whether the image display device is installed at an odd-numbered level or at an even-numbered
level by detecting presence of an input of the predetermined position information signal,

the image display device further comprises:
a signal output control circuit that instructs whether or not to output a position information signal from the image display
device itself in accordance with whether the image display device is installed at the odd-numbered level or at the even-numbered
level; and

a signal output unit that outputs the position information signal in a case of the signal output control circuit instructing
output of the position information signal; and

a display direction switching control circuit that instructs switching of a vertical display direction to the display unit
in accordance with whether the image display device is installed at the odd-numbered level or at the even-numbered level,
and

wherein the image data transmission switching circuit switches the transmission order in accordance with whether the image
display device is installed at the odd-numbered level or at the even-numbered level.