Display device and control method

• US 9,426,406 B2
• Filed: 08/25/2010
• Issued: 08/23/2016
• Est. Priority Date: 09/07/2009
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Ooi, Junji, Sakai, Yusuke, Tsurumi, Shingo, Gotoh, Tomohiko, Iida, Yuichi, Hayashi, Shinichi, Tsukamoto, Junichi, Tadenuma, Asako
• Primary Examiner(s): Barakat, Mohamed
• Application Number:
  US13/124,987
• Publication Number:
  US 20110254691A1
• Time in Patent Office: 2,190 Days
• Field of Search: 340/635, 345/176, 382/181, 382185-189, 715/780, 715/863
• US Class Current: 1/1
• CPC Class Codes: G06V 40/161 Detection; Localisation; Normalisation
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2330/022 in absence of operation, e.g. no data being entered during a predetermined time
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 5/10 Intensity circuits
• CPC Class Codes: H04N 23/61 based on recognised objects
• CPC Class Codes: H04N 23/651 for reducing power consumption by affecting camera operations, e.g. sleep mode, hibernation mode or power off of selective parts of the camera
• CPC Class Codes: H04N 5/63 Generation or supply of power specially adapted for television receivers

Abstract

Provided is a display device including an imaging unit that captures a moving image in a predetermined range in an image display direction, a moving body detection unit that detects whether or not a moving body is present in a predetermined range in the image display direction, an image analysis unit that analyzes the moving image captured by the imaging unit to detect whether or not a face is present, and a power control unit that controls power consumption with different patterns according to a plurality of modes that are set by combining whether or not the face detected by the image analysis unit is present and whether or not the moving body detected by the detection unit is present.

Claims

1. A display device, comprising:

a first sensor configured to capture a moving image in a predetermined range in an image display direction;

a second sensor configured to detect, separately from captured moving images, whether or not a moving body is present in the image display direction, the second sensor detecting a distance between the moving body and the display device when the second sensor detects that the moving body is present; and

a circuit connected to the first sensor and the second sensor, and configured to

analyze the moving image to detect whether or not a face is present, and

control power consumption with different patterns according to a plurality of modes based on whether or not the face is present and a detection result from the second sensor indicating whether or not the moving body is present and indicating the distance from the moving body to the display device,

wherein the circuit does not start control of power consumption until the face or the moving body is first detected after power is turned on.

2. The display device according to claim 1, wherein the circuit includes a first mode in which power consumption is controlled only according to whether or not the face is present, and when the circuit has not been able to detect the presence of the face during a predetermined time, power consumption decreases.

3. The display device according to claim 2, wherein the circuit includes a second mode in which power consumption is controlled using whether or not the face is present and whether or not the moving body is present, power consumption decreases up to a predetermined level when the circuit has not been able to detect the presence of the face during a first predetermined time, and, after the decrease, power consumption further decreases when the second sensor has not been able to detect the presence of the moving body during a second predetermined time.

4. The display device according to claim 3, wherein the circuit includes a third mode in which power consumption is controlled using whether or not the face is present and whether or not the moving body is present, and when the circuit has not been able to detect the presence of the face during a predetermined time and the second sensor has not been able to detect the presence of the moving body during the predetermined time, power consumption decreases.

5. The display device according to claim 1, wherein the circuit controls power consumption by increasing or decreasing brightness of a display panel that displays an image.

6. The display device according to claim 1, wherein the circuit controls power consumption by increasing or decreasing a sound volume of a speaker that plays a voice.

7. The display device according to claim 1, wherein the circuit controls power consumption by controlling an operation of a circuit configured to increase an image quality of a display image.

8. The display device according to claim 1, wherein the circuit is further configured to notify that control of power consumption is stopped when the circuit stops control of power consumption.

9. The display device according to claim 1, wherein the circuit specifies an individual through analysis on the moving image, and the circuit automatically selects a mode corresponding to the individual specified.

10. The display device according to claim 1, wherein the circuit automatically selects a mode corresponding to details of content to be displayed.

11. The display device according to claim 1, wherein the circuit is configured to exclude a moving body as a detection target when the distance between the display device and the moving body as determined by the second sensor is more than a predetermined distance.

12. A display device, comprising:

a sensor configured to detect whether or not a moving body is present in a predetermined range in an image display direction and

circuitry configured to

capture a moving image in a predetermined range in the image display direction,

analyze the moving image to detect whether or not a face is present, and

control power consumption with different patterns according to a plurality of modes that are set by determining whether or not the face is present and whether or not the moving body is present,

wherein the circuitry does not start control of power consumption until the face or the moving body is first detected after power is turned on.

13. A control method, comprising:

capturing, using a first sensor, a moving image in a predetermined range in an image display direction;

detecting, in a second sensor and separately from captured moving images, whether or not a moving body is present in the predetermined range in the image display direction;

detecting, in the second sensor, a distance between the moving body and the second sensor;

analyzing the captured moving image to detect whether or not a face is present; and

controlling power consumption with different patterns according to a plurality of modes based on whether or not the face is present and a detection result from the second sensor indicating whether or not the moving body is present and the distance from the moving body to the second sensor,

wherein the control of power consumption does not start until the face or the moving body is first detected after power is turned on.

14. The control method of claim 13, further comprising:

excluding a moving body as a detection target when the second sensor determines the moving body to be more than a predetermined distance from the second sensor in the display direction.