Multi-display device and image display control method of same
A multi-display device is configured to display an image, and the multi-display device includes display modules sequentially connected according to a prescribed connection configuration. Each of the display modules may include a signal input unit for acquiring an image signal and control information and a partial image selection unit for obtaining, from the control information, information about the connection configuration of the display modules, wherein each display module selects a partial image corresponding to the display module, from the image signal by referring to a first lookup table based on the information about the connection configuration.
1 . A multi-display device comprising a plurality of display modules sequentially connected according to a predetermined connection configuration of the plurality of display modules, wherein a display module of the plurality of display modules comprises:
a signal input unit configured to obtain an image signal and control information; and
a partial image selection unit configured to obtain information about the predetermined connection configuration of the plurality of display modules from the control information,
wherein the display module selects a partial image corresponding to the display module from the image signal by referring to a first lookup table based on the information about the predetermined connection configuration of the plurality of display modules
wherein the control information comprises:
an identifier of the predetermined connection configuration of the plurality of display modules;
information about a number of the plurality of display modules; and
a counter initially set to 1, and
wherein the display module further comprises a signal providing unit configured to:
increase the counter by 1; and
transmit the control information to a next display module according to the predetermined connection configuration of the plurality of display modules.
2 . The multi-display device of claim 1 , wherein the first lookup table comprises the identifier of the predetermined connection configuration of the plurality of display modules, the information about the number of the plurality of display modules, and position information about a partial image to be displayed by respective ones of the plurality of display modules.
3 . The multi-display device of claim 1 , wherein the control information obtained by the display module further comprises sequence information about the display module on the predetermined connection configuration of the plurality of display modules, and
wherein the display module is configured to refer to the first lookup table based on the sequence information.
4 . The multi-display device of claim 1 , wherein the control information is obtained as a header of the image signal through an image signal channel or obtained through a control channel separate from the image signal channel.
5 . The multi-display device of claim 1 , further comprising a control information generation unit configured to:
receive sequence information through a backward signal transmission channel opposite to a forward direction in which the image signal is transferred to the plurality of display modules; and
generate the control information based on the received sequence information.
6 . The multi-display device of claim 5 , wherein the display module further comprises:
two or more divided areas; and
a transmission port and a reception port arranged in the divided area and having identification information about the divided area,
wherein the sequence information comprises the identification information about the transmission port and the reception port which are in an active state on the backward signal transmission channel, and
wherein the control information generation unit is further configured to generate the control information by referring to a second lookup table based on the received identification information.
7 . The multi-display device of claim 6 , wherein the display module has a rectangular shape,
wherein the divided area comprises four quadrant areas generated by dividing the rectangular shape by two diagonal lines, and
wherein the identification information about the transmission port and the reception port comprises quadrant information about where the transmission port and the reception port are positioned.
8 . A method for controlling an image display on a display module in a multi-display device including a plurality of display modules sequentially connected according to a predetermined connection configuration of the plurality of display modules, the method comprising:
obtaining an image signal and control information;
obtaining information about the predetermined connection configuration of the plurality of display modules from the control information; and
selecting a partial image corresponding to the display module from the image signal by referring to a first lookup table based on the information about the predetermined connection configuration of the plurality of display modules,
wherein the control information includes an identifier of the predetermined connection configuration of the plurality of display modules, information about a number of the plurality of display modules, and a counter initially set to 1, and
wherein the method further comprises:
increasing the counter by 1; and
transmitting the control information to a next display module according to the predetermined connection configuration of the plurality of display modules.
9 . The method of claim 8 , wherein the first lookup table includes the identifier of the predetermined connection configuration of the plurality of display modules, the information about the number of the plurality of display modules, and position information about a partial image to be displayed by respective ones of the plurality of display modules.
10 . The method of claim 8 , wherein the control information obtained by the display module is obtained as a header of the image signal through an image signal channel or obtained through a control channel separate from the image signal channel, further includes sequence information about the display module on the connection configuration, and
wherein the display module refers to the first lookup table based on the sequence information about the display module on the predetermined connection configuration of the plurality of display modules.
11 . The method of claim 8 , further comprising:
receiving sequence information indicating the predetermined connection configuration of the plurality of display modules through a backward signal transmission channel opposite to a forward direction in which the image signal is transferred to the plurality of display modules; and
generating the control information based on the received sequence information.
12 . The method of claim 11 , wherein the display module includes two or more divided areas, and a transmission port and a reception port arranged in the divided area and having identification information about the corresponding divided area,
wherein the sequence information includes the identification information about the transmission port and the reception port which are in an active state on the backward signal transmission channel, and
wherein the control information is generated by referring to a second lookup table based on the received identification information.
13 . The method of claim 12 , wherein each of the plurality of display modules has a rectangular shape,
wherein the divided areas include four quadrant areas generated by dividing the rectangular shape by two diagonal lines, and
wherein the identification information about the transmission port and the reception port includes quadrant information about where the transmission port and the reception port are positioned.