DISPLAY DEVICE AND CONTROL METHOD

• US 20110254691A1
• Filed: 08/25/2010
• Published: 10/20/2011
• 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: Hayashi, Shinichi, Iida, Yuichi, Tsukamoto, Junichi, Ooi, Junji, Tadenuma, Asako, Tsurumi, Shingo, Gotoh, Tomohiko, Sakai, Yusuke
• Granted Patent: US 9,426,406 B2
• Time in Patent Office: Days
• US Class Current: 340/635
• 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:

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.

2. The display device according to claim 1, wherein the power control unit has a first mode in which power consumption is controlled only according to whether or not the face detected by the image analysis unit is present, and when the image analysis unit 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 1, wherein the power control unit has a second mode in which power consumption is controlled using whether or not the face detected by the image analysis unit is present and whether or not the moving body detected by the moving body detection unit is present, power consumption decreases up to a predetermined level when the image analysis unit 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 moving body detection unit has not been able to detect the presence of the moving body during a second predetermined time.

4. The display device according to claim 1, wherein the power control unit has a third mode in which power consumption is controlled using whether or not the face detected by the image analysis unit is present and whether or not the moving body detected by the moving body detection unit is present, and when the image analysis unit has not been able to detect the presence of the face during a predetermined time and the moving body detection unit 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 power control unit controls power consumption by increasing or decreasing brightness of a display panel that display an image.

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

8. The display device according to claim 1, further comprising a notification unit that notifies that control of power consumption is stopped when the power control unit stops control of power consumption.

9. The display device according to claim 1, wherein the image analysis unit specifies an individual through analysis on the moving image captured by the imaging unit, and the power control unit automatically selects the mode corresponding to the individual specified by the image analysis unit.

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

11. The display device according to claim 1, wherein the power control unit does not start control of power consumption until the face or the moving body is first detected after power is turned on.

12. A control method, comprising:

an imaging step of capturing a moving image in a predetermined range in an image display direction;

a moving body detection step of detecting whether or not a moving body is present in a predetermined range in the image display direction;

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

a power control step of controlling power consumption with different patterns according to a plurality of modes by combining whether or not the face is present and whether or not the moving body is present.