Display device, and control method, control apparatus and control system therefor

Patent metadata

Field	Value
Publication number	US-11302294-B2
Application number	US-202017271686-A
Country	US
Kind code	B2
Filing date	May 11, 2020
Priority date	May 15, 2019
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

A control method for a display device includes: receiving a user distance, and determining whether the user distance is smaller than a preset distance: if so, transmitting a first control command to a display screen to control the display screen to enter a local display state, and a second control command to a player to control the player to output local image data; receiving the local image data; and transmitting the local image data to the display screen. The user distance is a distance from the user to a reference surface in a direction perpendicular to the reference surface, and the reference surface is a display surface of the display screen or a plane parallel to the display surface. The preset distance is a minimum distance from the user to the reference surface in a case where the field of view of the user covers the entire active area.

First claim

What is claimed is:

1. A control method for a display device, the control method comprising:
receiving a user distance,
determining whether the user distance is smaller than a preset distance;
if so, transmitting a first control command to a display screen of the display device to control the display screen to enter a local display state, and a second control command to a player to control the player to output local image data;
receiving the local image data from the player,
transmitting the local image data to the display screen, so that the display screen displays an image in the local display state within a field of view of a user in a local region of an entire active area of the display screen according to the local image data;
receiving spatial position information of a head of the user; and
if the user distance is smaller than the preset distance, determining whether a time for which the head of the user stays in a preset space range is greater than or equal to a preset time according to the spatial position information of the head of the user;
if so, obtaining image center coordinates according to the spatial position information of the head of the user; and
generating a first control command containing information of the image center coordinates, wherein
the user distance is a distance from the user to a reference surface in a direction perpendicular to the reference surface, and the reference surface is a display surface of the display screen or a plane parallel to the display surface; the preset distance is a minimum distance from the user to the reference surface in a case where the field of view of the user covers the entire active area of the display screen; and the image center coordinates include coordinates of a mapping point of a center of the head of the user on the display screen during the stay time.

2. The control method according to claim 1 , further comprising:
receiving a debugging distance of the user;
if the user distance is smaller than the preset distance, determining an area of a region of the display screen covered by the field of view of the user at the debugging distance according to the debugging distance;
obtaining a first local image resolution according to the determined area; and
generating a first control command containing information of the first local image resolution and a second control command containing the information of the first local image resolution, wherein
the debugging distance is a distance from the user to the display surface of the display screen in the direction perpendicular to the reference surface.

3. The control method according to claim 1 , further comprising:
if the user distance is smaller than the preset distance, obtaining a pre-stored second local image resolution,
generating a first control command containing information of the second local image resolution and a second control command containing the information of the second local image resolution, wherein
the second local image resolution is a resolution corresponding to an area of a region of the display screen covered by the field of view of the user at a preset debugging distance.

4. The control method according to claim 1 , further comprising:
if the user distance is greater than or equal to the preset distance:
transmitting a third control command to the display screen to control the display screen to enter a full-screen display state;
transmitting a fourth control command containing information of a resolution of the display screen to the player to control the player to output full-screen image data having the resolution of the display screen;
receiving the full-screen image data from the player, and
transmitting the full-screen image data to the display screen, so that the display screen displays an image in the entire active area of the display screen according to the full-screen image data in the full-screen display state.

5. A non-transitory computer-readable storage medium storing computer program instructions that, when run on a processor, cause the processor to perform one or more steps of the control method for the display device according to claim 1 .

6. A control apparatus for a display device, the control apparatus comprising a receiver, an information processor and a transmitter; wherein
the receiver is configured to receive a user distance;
the information processor is coupled to the receiver and the transmitter; and the information processor is configured to: determine whether the user distance is smaller than a preset distance; and
if so, transmit a first control command to a display screen of the display device through the transmitter to control the display screen to enter a local display state; and transmit a second control command to a player through the transmitter to control the player to output local image data;
the receiver is further configured to receive the local image data from the player;
the transmitter is coupled to the receiver, and is further configured to transmit the local image data to the display screen, so that the display screen displays an image within a field of view of a user in a local region of an entire active area of the display screen according to the local image data in the local display state;
the receiver is further configured to receive spatial position information of a head of the user; and
the information processor is further configured to: if the user distance is smaller than the preset distance, determine whether a time for which the head of the user stays in a preset space range is greater than or equal to a preset time according to the spatial position information of the head of the user: if so, obtain image center coordinates according to the spatial position information of the head of the user; and generate a first control command containing information of the image center coordinates, wherein
the user distance is a distance from the user to a reference surface in a direction perpendicular to the reference surface, and the reference surface is a display surface of the display screen or a plane parallel to the display surface; the preset distance is a minimum distance from the user to the reference surface in a case where the field of view of the user covers the entire active area of the display screen; and the image center coordinates include coordinates of a mapping point of a center of the head of the user on the display screen during the stay time.

7. The control apparatus according to claim 6 , wherein
the receiver is further configured to receive a debugging distance of the user; and
the information processor is further configured to: if the user distance is smaller than the preset distance, determine an area of a region of the display device covered by the field of view of the user at the debugging distance according to the debugging distance; obtain a first local image resolution according to the determined area; and generate a first control command containing information of the first local image resolution and a second control command containing the information of the first local image resolution, wherein
the debugging distance is a distance from the user to the display surface of the display screen in the direction perpendicular to the reference surface.

8. The control apparatus according to claim 6 , wherein
the information processor is further configured to: if the user distance is smaller than the preset distance, obtain a pre-stored second local image resolution, and generate a first control command containing information of the second local image resolution and a second control command containing the information of the second local image resolution, wherein
the second local image resolution is a resolution corresponding t

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Yanfu
• Geng Lihua

Classifications

• G06F3/147 Primary

  using display panels · CPC title

• H04N21/4312

  involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations · CPC title

• G09G2340/045

  Zooming at least part of an image, i.e. enlarging it or shrinking it · CPC title

• G09G2320/0261

  in the context of movement of objects on the screen or movement of the observer relative to the screen · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title