Method for controlling dual-input display device with power-saving mode, and display device

Patent metadata

Field	Value
Publication number	US-11366509-B2
Application number	US-202017130130-A
Country	US
Kind code	B2
Filing date	Dec 22, 2020
Priority date	Dec 23, 2019
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

A method for controlling a display device having a first interface to which a first image signal is inputted and a second interface to which a second image signal is inputted from an image supply device having an auto sleep function is provided. The method includes: shifting to a sleep mode in response to a continuous stop of the first image signal for a first time, in a first mode in which a first image based on the first image signal is displayed on a screen; and shifting to the sleep mode in response to a continuous stop of the second image signal for a second time that is shorter than the first time, in a second mode in which a second image based on the second image signal is displayed on the screen.

First claim

What is claimed is:

1. A method for controlling a display device having a first interface to which a first image signal is inputted from an external device and a second interface to which a second image signal is inputted from an image supply device external to the display device having an auto sleep function, the method comprising:
shifting to a sleep mode in response to a continuous stop of the first image signal for a first time, in a first mode in which a first image based on the first image signal is displayed on a screen; and
shifting to the sleep mode in response to a continuous stop of the second image signal for a second time that is shorter than the first time, in a second mode in which a second image based on the second image signal is displayed on the screen.

2. The method for controlling the display device according to claim 1 , wherein
the second time is a fixed value.

3. The method for controlling the display device according to claim 1 , wherein
information representing the first time is changed in response to an operation by a user via an input device.

4. The method for controlling the display device according to claim 1 , wherein
in the second mode, electric power is supplied to the image supply device.

5. A display device comprising:
a first interface to which a first image signal is inputted from an external device;
a second interface to which a second image signal is inputted from an image supply device external to the display device having an auto sleep function;
a display unit displaying an image on a screen; and
a control circuit shifting to a sleep mode in response to a continuous stop of the first image signal for a first time, in a first mode in which a first image based on the first image signal is displayed on the screen, and shifting to the sleep mode in response to a continuous stop of the second image signal for a second time that is shorter than the first time, in a second mode in which a second image based on the second image signal is displayed on the screen.

6. The display device according to claim 5 , further comprising
a memory storing information representing the second time as a fixed value.

7. The display device according to claim 5 , further comprising
an input device changing information representing the first time in response to an operation by a user.

8. The display device according to claim 6 , further comprising
a power supply circuit supplying electric power to the image supply device in the second mode.

Assignees

• Seiko Epson Corp

Inventors

• Watanabe Ken

Classifications

• G06F1/3265 Primary

  Power saving in display device · CPC title

• H04N9/31 Primary

  Projection devices for colour picture display {, e.g. using electronic spatial light modulators [ESLM]} · CPC title

• H04N9/3141 Primary

  Constructional details thereof (details not peculiar to the presence of an electronic spatial light modulator G03B21/14) · CPC title

• H04N21/4436

  Power management, e.g. shutting down unused components of the receiver (power management in computer systems G06F1/3203; hibernate or awake process in computer systems G06F9/4418) · CPC title

• G06F1/3206

  Monitoring of events, devices or parameters that trigger a change in power modality · CPC title