Power consumption detection apparatus, power consumption control apparatus, image processing apparatus, self-luminous display apparatus, electronic device, power consumption detection method, power consumption control method, and computer program

A self-luminous display apparatus, comprising:

• a display panel having self-luminous elements and pixel circuits therefor arranged in a matrix, each of the pixel circuits being configured to retain an image signal that is written thereto in accordance with a line-sequential scanning system until a next writing time;
• a line current calculation section configured to calculate, based on the image signals supplied to said display panel, a value of a line current consumed by each of horizontal lines;
• and
• a power consumption calculation section configured to calculate, on a horizontal line cycle, power consumed by said entire display panel based on the most recent values of the line currents, the values corresponding in number to a vertical resolution.

An electronic device, comprising:

• a display panel having self-luminous elements and pixel circuits therefor arranged in a matrix, each of the pixel circuits being configured to retain an image signal that is written thereto in accordance with a line-sequential scanning system until a next writing time;
• a line current calculation section configured to calculate, based on the image signals supplied to said display panel, a value of a line current consumed by each of horizontal lines;
• and
• a power consumption calculation section configured to calculate, on a horizontal line cycle, power consumed by said entire display panel based on the most recent values of the line currents, the values corresponding in number to a vertical resolution.

A self-luminous display apparatus, comprising:

• a line current calculation section configured to calculate a value of a line current consumed by each of horizontal lines based on image signals outputted to a self-luminous display apparatus that contains a display panel that has self-luminous elements and pixel circuits therefor arranged in a matrix, wherein the image signals are written in accordance with a line-sequential scanning system and are each retained in a corresponding one of the pixel circuits until a next writing time;
• a power consumption calculation section configured to calculate, on a horizontal line cycle, power consumed by the entire display panel based on the most recent values of the line currents, the values corresponding in number to a vertical resolution;
• and
• a power consumption control section configured to control, on the horizontal line cycle, peak brightness of a display screen so that the consumed power calculated on the horizontal line cycle satisfies allowable power consumption.

An electronic device, comprising:

• a display panel having self-luminous elements and pixel circuits therefor arranged in a matrix, each of the pixel circuits being configured to retain an image signal that is written thereto in accordance with a line-sequential scanning system until a next writing time;
• a line current calculation section configured to calculate, based on the image signals supplied to said display panel, a value of a line current consumed by each of horizontal lines;
• a power consumption calculation section configured to calculate, on a horizontal line cycle, power consumed by said entire display panel based on the most recent values of the line currents, the values corresponding in number to a vertical resolution;
• and
• a power consumption control section configured to control, on the horizontal line cycle, peak brightness of a display screen so that the consumed power calculated on the horizontal line cycle satisfies allowable power consumption.

A method for controlling power consumption, the method comprising the steps of:

• calculating, based on an image signal, a value of a line current consumed by each of horizontal lines;
• calculating, on a horizontal line cycle, power consumed by an entire display panel based on the most recent values of the line currents, the values corresponding in number to a vertical resolution;
• and
• controlling, on the horizontal line cycle, peak brightness of a display screen so that the consumed power calculated on the horizontal line cycle satisfies allowable power consumption.