Systems, methods, and apparatus for display panel human presence detection

Patent metadata

Field	Value
Publication number	US-12306692-B2
Application number	US-202017917876-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Jun 26, 2020
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

Methods, apparatus, systems and articles of manufacture are disclosed for display panel human presence detection. An example display device includes a sensor to generate a detection signal based on whether a human is detected, and logic circuitry to generate a control signal to cause an adjustment of a power state of the display device based on the detection signal.

First claim

What is claimed is:

1. A display device comprising:
a sensor to generate a detection signal based on whether a human is detected;
first logic circuitry to:
generate a first control signal based on (a) the detection signal and (b) a connection status signal, the connection status signal indicative of a connection to host hardware; and
cause transmission of the first control signal to the host hardware via an auxiliary channel between the display device and the host hardware; and

second logic circuitry in circuit with the sensor and the first logic circuitry, the second logic circuitry to:
generate the connection status signal based on a detection that the display device is in communication with the host hardware;
trigger a timer based on the detection signal indicating a human is not detected; and
based on the timer elapsing, turn off the display device and de-assert the connection status signal, the first logic circuitry to, based on the de-assertion of the connection status signal, cause transmission of a second control signal to the host hardware to cease transmission of display data from the host hardware to the display device.

2. The display device of claim 1 , wherein the second logic circuitry is to stop the timer based on the detection signal indicating a human is detected before the timer elapses.

3. The display device of claim 1 , wherein the second logic circuitry is to reduce a backlight intensity of the display device based on the detection signal indicating a human is not detected.

4. The display device of claim 3 , wherein the second logic circuitry is to increase the backlight intensity of the display device based on the detection signal indicating a human is detected.

5. The display device of claim 1 , wherein the first logic circuitry is to:
determine that the detection signal is indicative of a presence of the human proximate the display device; and
determine that the connection status signal indicates the display device is in communication with the host hardware.

6. The display device of claim 5 , wherein the first control signal is to cause the host hardware to transmit display data from the host hardware to the display device.

7. The display device of claim 1 , wherein the first logic circuitry is to:
determine that the detection signal is indicative of an absence of the human proximate the display device; and
determine that the connection status signal indicates the display device is in communication with the host hardware.

8. The display device of claim 1 , wherein the second logic circuitry is to turn off the display device based on the timer elapsing without a change in the detection signal.

9. The display device of claim 1 , wherein the second logic circuitry is to:
configure the sensor based on detection parameters; and
cause transmission of at least one of the detection parameters or the detection signal to the host hardware over a communication channel of a display interface.

10. The display device of claim 9 , wherein the communication channel is the auxiliary channel of the display interface.

11. The display device of claim 1 , wherein the sensor is to generate the detection signal based on whether the human is detected proximate the display device.

12. The display device of claim 1 , wherein at least one of the sensor is to generate the detection signal or the first logic circuitry is to generate the first control signal based on an enable signal from the host hardware.

13. The display device of claim 1 , wherein at least one of the sensor or the first logic circuitry is to be disabled based on a disable signal from the host hardware.

14. The display device of claim 13 , wherein after the the at least one of the sensor or the first logic circuitry is disabled, the at least one of the sensor or the first logic circuitry is to be enabled based on an enable signal from the host hardware.

15. The display device of claim 1 , wherein at least one of the sensor or the first logic circuitry is to maintain operation based on a disconnection between the display device and the host hardware.

16. A computer readable storage medium comprising instructions that cause a display device to at least:
generate a first alert indicative of a human presence proximate the display device, the first alert based on a first output from a sensor included in the display device;
detect that the display device is in communication with host hardware;
based on the first alert and the detection, generate a first control signal;
transmit the first control signal to the host hardware via an auxiliary channel between the display device and the host hardware;
generate a second alert indicative of a human absence proximate the display device, the second alert based on a second output from the sensor;
based on the second alert, start a timer; and
based on the timer elapsing, turn off the display device and transmit a second control signal to the host hardware to cease transmission of display data from the host hardware to the display device.

17. The computer readable storage medium of claim 16 , wherein the instructions cause the display device to, based on the first alert and the detection, adjust a power state of the display device by increasing a backlight intensity of the display device or turning on the display device.

18. The computer readable storage medium of claim 16 , wherein the instructions cause the display device to, based on the second alert, adjust a power state of the display device by decreasing a backlight intensity of the display device or turning off the display device.

19. A display device comprising:
first means for generating a detection signal based on whether a human is detected; and
second means for generating control signals to:
generate a first control signal based on (a) the detection signal indicating a human is detected and (b) a connection status signal indicative of a connection to host hardware;
cause transmission of the first control signal to the host hardware via an auxiliary channel between the display device and the host hardware;
trigger a timer based on a change in the detection signal indicating a human is not detected; and
based on the timer elapsing and the detection signal indicating a human is not detected, turn off the display device and cause transmission of a second control signal to the host hardware to cease transmission of display data from the host hardware to the display device.

20. The display device of claim 19 , further including:
means for asserting the connection status signal based on detecting that the display device is in communication with the host hardware, the means for asserting including means for de-asserting the connection status signal based on not detecting that the display device is in communication with the host hardware.

21. The display device of claim 19 , wherein the second means for generating is to, based on the detection signal indicating a human is not detected, cause a backlight intensity of the display device to be decreased.

22. A method for human presence detection, the method comprising:
generating a first alert indicative of a human presence proximate a display device, the first alert based on a first output from a sensor included in the display device;
detecting that the display device is in communication with host hardware;
based on the first alert and the detection, providing, via at least one logic circuit in the display device, a first control signal to

Assignees

• Intel Corp

Inventors

• Raghavulu Venkat
• Han Ke

Classifications

• G06F3/14

  Digital output to display device {; Cooperation and interconnection of the display device with other functional units} · CPC title

• G06F1/3296

  by lowering the supply or operating voltage · CPC title

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title