System and Method for PWM Control of a Video Display Screen
AssigneeBrompton Technology Ltd.
InventorChristopher Deighton
Life of this patent
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Abstract
A PWM control system includes a memory and a processor. The processor obtains camera characteristics relating to a camera that is configured to capture an image displayed by a video display. The camera characteristics include a duration of a period when a shutter of the camera is open. The processor also calculates a PWM timing control for the video display. The PWM timing control specifies a PWM cycle duration that is based on the period when the shutter of the camera is open. The processor further sends a signal to the video display. The signal includes the PWM timing control and is configured to cause the video display to control a brightness of the video display according to the PWM timing control during the period when the shutter of the camera is open.
Claims20
A pulse width modulation (PWM) control system comprising:
- a memory configured to store instructions;
- and
- a processor coupled to the memory and configured to execute instructions stored in the memory to:
- obtain camera characteristics relating to a camera that is configured to capture an image displayed by a video display, the camera characteristics comprising a duration of a period when a shutter of the camera is open;
- calculate a PWM timing control for the video display, the PWM timing control specifying a PWM cycle duration based on the period when the shutter of the camera is open;
- and
- send a signal to the video display, the signal including the PWM timing control and configured to cause the video display to control a brightness of the video display according to the PWM timing control during the period when the shutter of the camera is open.
A method of controlling pulse width modulation (PWM) in a video display, the method comprising:
- obtaining, by a control system, camera characteristics relating to a camera that is configured to capture an image displayed by the video display, the camera characteristics comprising a duration of a period when a shutter of the camera is open;
- calculating, by the control system, a PWM timing control for the video display, the PWM timing control specifying a PWM cycle duration based on the period when the shutter of the camera is open;
- and
- sending, by the control system, a signal to the video display, the signal configured to cause the video display to control a brightness of the video display according to the PWM timing control during the period when the shutter of the camera is open.
Dependencies are inferred from the claim text.