Method for controlling source device at sink device and apparatus for the same

Patent metadata

Field	Value
Publication number	US-2018070122-A1
Application number	US-201715675628-A
Country	US
Kind code	A1
Filing date	Aug 11, 2017
Priority date	Sep 2, 2016
Publication date	Mar 8, 2018
Grant date	—

Abstract

A sink device includes: a network transceiver configured to communicate with a source device; a display; and a controller configured to: receive video content from the source device via the network transceiver, wherein a source display of the source device corresponds to original display coordinates; cause the display to display the video content, wherein the display corresponds to changed display coordinates; receive a control signal for selecting a first coordinate of the display; generate a second coordinate with respect to the original display coordinates, wherein the second coordinate corresponds to the first coordinate; and cause the network transceiver to transmit the second coordinate to the source device.

First claim

What is claimed is:

1 . A sink device comprising:
a network transceiver configured to communicate with a source device; a display; and a controller configured to: receive video content from the source device via the network transceiver, wherein a source display of the source device corresponds to original display coordinates; cause the display to display the video content, wherein the display corresponds to changed display coordinates; receive a control signal for selecting a first coordinate of the display; generate a second coordinate with respect to the original display coordinates, wherein the second coordinate corresponds to the first coordinate; and cause the network transceiver to transmit the second coordinate to the source device.

2 . The sink device of claim 1 , wherein:
a display resolution of the source device is less than a display resolution of the display of the sink device; and the controller is further configured to scale the received video content for full screen display on the display corresponding to the changed display coordinates.

3 . The sink device of claim 2 , wherein the controller is further configured to cause the display to display the received video content in an unscaled size before the video content is displayed full screen display on the display.

4 . The sink device of claim 3 , wherein the controller is further configured to cause the display to switch to full screen display of the video content from displaying the video content in the unscaled size in response to a resolution control input.

5 . The sink device of claim 2 , wherein the second coordinate is generated using scaling information of the received video content.

6 . The sink device of claim 1 , wherein the controller is further configured to identify an object of an image of the displayed video content, the object corresponding to the selected first coordinate.

7 . The sink device of claim 6 , wherein the controller is further configured to cause the network transceiver to transmit the second coordinate and the identified object to the source device when the identified object is a source device-based object.

8 . The sink device of claim 6 , wherein the controller is further configured to perform a control operation corresponding to the identified object when the identified object is a sink device-based object.

9 . The sink device of claim 1 , wherein the control signal is received from a remote control device associated with the sink device.

10 . The sink device of claim 9 , wherein:
the control signal is for selection of a third coordinate of a touch pad of the remote control device wherein a position of the third coordinate of the touch pad corresponds to a position of the first coordinate of the display; and the second coordinate is generated by converting the third coordinate to the first coordinate with respect to the changed coordinates and generating the second coordinate based on the first coordinate for transmitting to the source device.

11 . The sink device of claim 1 , wherein the controller is further configured to:
receive, via the network transceiver, at least one original menu display coordinate from the source device for displaying a menu in response to the selection of the first coordinate of the displayed video content; generate at least one changed menu display coordinate with respect to the changed display coordinates, wherein the at least one changed menu display coordinate corresponds to the at least one original menu display coordinate; and cause the display to display a menu at the at least one changed menu display coordinate.

12 . A sink device comprising:
a network transceiver configured to communicate with a source device; a memory; a display; and a controller configured to: receive video content from the source device via the network transceiver; generate a first coordinate mapping table by mapping a coordinate table of the source device and a coordinate table of the sink device; store the first coordinate mapping table in the memory; cause the display to display the received video content; receive a control signal for selecting a first coordinate of the display; identify a second coordinate with respect to the original display coordinates using the first coordinate mapping table, wherein the second coordinate corresponds to the first coordinate; cause the network transceiver to transmit the second coordinate to the source device.

13 . The sink device of claim 12 , wherein:
a display resolution of the source device is less than a display resolution of the display of the sink device; and the controller is further configured to scale the received video content for full screen display on the display corresponding to the changed display coordinates.

14 . The sink device of claim 13 , wherein the controller is further configured to cause the display to display the received video content in an unscaled size before the video content is displayed full screen display on the display.

15 . The sink device of claim 14 , wherein the controller is further configured to cause the display to switch to full screen display of the video content from displaying the video content in the unscaled size in response to a resolution control input.

16 . The sink device of claim 12 , wherein the controller is further configured to identify an object of an image of the displayed video content, the object corresponding to the selected first coordinate.

17 . The sink device of claim 16 , wherein the controller is further configured to cause the network transceiver to transmit the second coordinate and the identified object to the source device when the identified object is a source device-based object.

18 . The sink device of claim 16 , wherein the controller is further configured to perform a control operation corresponding to the identified object when the identified object is a sink device-based object.

19 . The sink device of claim 12 , wherein the control signal is received from a remote control device associated with the sink device.

20 . The sink device of claim 19 , wherein:
the control signal is for selection of a third coordinate of a touch pad of the remote control device wherein a position of the third coordinate of the touch pad corresponds to a position of the first coordinate of the display; and the controller is further configured to: receive a touch pad coordinate table of the remote control device; generate a second coordinate mapping table by mapping the touch pad coordinate table and the coordinate table of the sink device; and identify the first coordinate as a selection based on the second coordinate mapping table.

21 . The sink device of claim 12 , wherein the controller is further configured to:
receive, via the network transceiver, at least one original menu display coordinate from the source device for displaying a menu in response to the selection of the first coordinate of the displayed video content; identify at least one changed menu display coordinate with respect to the changed display coordinates using the first coordinate mapping table, wherein the at least one changed menu display coordinate corresponds to the at least one original menu display coordinate; and cause the display to display a menu at the at least one changed menu display coordinate.

22 . The sink device of claim 12 , wherein the controller is further configured to:
receive orientation change

Assignees

• Lg Electronics Inc

Inventors

• Baek Sanghyun
• Lee Jaekyung

Classifications

• G09G2370/16

  Use of wireless transmission of display information · CPC title

• H04N21/4438

  Window management, e.g. event handling following interaction with the user interface · CPC title

• H04N21/42224

  Touch pad or touch panel provided on the remote control · CPC title

• G06F3/1462

  with means for detecting differences between the image stored in the host and the images displayed on the remote displays · CPC title

• H04N21/4227

  {Providing} Remote input by a user located remotely from the client device, e.g. at work · CPC title