Signal processing apparatus, signal processing method, and display apparatus

Patent metadata

Field	Value
Publication number	US-11817048-B2
Application number	US-202117918182-A
Country	US
Kind code	B2
Filing date	Apr 19, 2021
Priority date	May 1, 2020
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

The present technology relates to a signal processing apparatus, a signal processing method, and a display apparatus that are able to provide suitable functionality according to applications. The signal processing apparatus provided by the present technology includes a signal processing section that acquires at least one of first information regarding a color of a video to be displayed on a panel section, second information regarding brightness of a screen of the panel section, and third information measured as a physical quantity related to the panel section, and that performs, on the basis of the acquired information, adaptive control of a voltage according to a load on and an application of the panel section. The voltage is used for driving the panel section. The present technology is applicable, for example, to a self-luminous display apparatus.

First claim

The invention claimed is:

1. A signal processing apparatus comprising:
a signal processing section that
acquires at least one of first information regarding a color of a video to be displayed on a panel section, second information regarding brightness of a screen of the panel section, and third information measured as a physical quantity related to the panel section, and
performs, on a basis of the acquired information, adaptive control of a voltage according to a load on and an application of the panel section, the voltage being used for driving the panel section, wherein

the signal processing section performs, on the basis of the acquired information, adaptive control of the voltage according to the application while the load on the panel section is measured.

2. The signal processing apparatus according to claim 1 , wherein
the first information includes information regarding components of a color space.

3. The signal processing apparatus according to claim 2 , wherein
the color space includes an HSV color space, and
the components of the color space include a hue, saturation, and brightness.

4. The signal processing apparatus according to claim 3 , wherein
the signal processing section adjusts weight according to the load on the panel section by controlling a gain related to a hue, saturation, or brightness.

5. The signal processing apparatus according to claim 1 , wherein
the second information includes information regarding an average pixel level indicative of brightness of the entire screen of the panel section.

6. The signal processing apparatus according to claim 5 , wherein
the signal processing section adjusts weight according to the load on the panel section by controlling a luminance curve on a basis of the average pixel level.

7. The signal processing apparatus according to claim 1 , wherein
the third information includes a physical quantity indicating at least either a surface temperature of the panel section or amperage based on the voltage applied to the panel section.

8. The signal processing apparatus according to claim 7 , wherein
the signal processing section performs feedback control of the load on the panel section on a basis of a result of measurement of the surface temperature or of the amperage.

9. The signal processing apparatus according to claim 7 , wherein
the panel section is provided with one or more temperature sensors for measuring the surface temperature.

10. The signal processing apparatus according to claim 7 , wherein
the panel section or a power supply substrate for generating the voltage is provided with one or more current sensors for measuring the amperage.

11. The signal processing apparatus according to claim 1 , wherein
the application includes an application for achieving an increase in luminance of the screen of the panel section, suppression of a temperature rise in the panel section, or a reduction in power consumption of the panel section.

12. The signal processing apparatus according to claim 11 , wherein,
in a case where the luminance of the screen of the panel section is to be increased, the signal processing section increases the voltage upon detection of a state where a value of an average pixel level that is included in the second information and that is indicative of brightness of the entire screen of the panel section is smaller than a reference value and where a light emission area of the panel section is comparatively small, and a state where a video signal has a color component whose value is smaller than a reference value according to information that is included in the first information and that is related to components of a color space and where a signal level of the video signal is higher than a reference value.

13. The signal processing apparatus according to claim 12 , wherein,
in a case where the load on the panel section is increased when the voltage is increased, the signal processing section exercises control to restore the voltage to a predetermined state, by performing feedback control on a basis of a result of measurement of a physical quantity that is included in the third information and that is indicative of at least either a surface temperature of the panel section or amperage based on the voltage applied to the panel section.

14. The signal processing apparatus according to claim 11 , wherein,
in a case where the temperature rise in the panel section is to be suppressed, the signal processing section decreases the voltage upon detection of a state where a value of an average pixel level that is included in the second information and that is indicative of brightness of the entire screen of the panel section is greater than a reference value and where a light emission area of the panel section is comparatively large, and a state where a video signal has a color component whose value is greater than a reference value according to information that is included in the first information and that is related to components of a color space and where a signal level of the video signal is higher than a reference value.

15. The signal processing apparatus according to claim 14 , wherein,
in a case where the load on the panel section is decreased when the voltage is decreased, the signal processing section exercises control to restore the voltage to a predetermined state, by performing feedback control on a basis of a result of measurement of a physical quantity that is included in the third information and that is indicative of at least either a surface temperature of the panel section or amperage based on the voltage applied to the panel section.

16. The signal processing apparatus according to claim 1 , wherein
the panel section includes an OLED panel.

17. A signal processing method comprising:
by a signal processing apparatus,
acquiring at least one of first information regarding a color of a video to be displayed on a panel section, second information regarding brightness of a screen of the panel section, and third information measured as a physical quantity related to the panel section; and
performing, when a voltage for driving the panel section is to be adaptively controlled according to a load on and an application of the panel section on a basis of the acquired information, adaptive control of the voltage according to the application while the load on the panel section is measured.

18. A display apparatus comprising:
a signal processing section that processes a video signal; and
a panel section that displays a video based on the video signal, wherein
the signal processing section
acquires at least one of first information regarding a color of a video to be displayed on a panel section, second information regarding brightness of a screen of the panel section, and third information measured as a physical quantity related to the panel section, and
performs, when a voltage for driving the panel section is to be adaptively controlled according to a load on and an application of the panel section on a basis of the acquired information, adaptive control of the voltage according to the application while the load on the panel section is measured.

19. The display apparatus according to claim 18 , wherein
the panel section includes an OLED panel.

Assignees

• Sony Group Corp

Inventors

• ZEN Masao
• Ikeyama Tetsuo
• Miki Daisuke
• KIKUCHI Syunsuke
• Nukiyama Kazuhiro
• Kobayashi Kazutaka
• Konuma Yasushi
• Uchida Kazuki
• Sasaki Masayoshi
• Okochi Masayuki

Classifications

• G09G3/3208 Primary

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• G09G2320/041

  Temperature compensation · CPC title

• G09G2320/0626

  for control of overall brightness · CPC title

• G09G2330/023

  using energy recovery or conservation · CPC title

• G09G2360/145

  the light originating from the display screen · CPC title