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US 9,866,785 B2Granted
Automatic reduction of video display device power consumption
AssigneesAdvanced Micro Devices, Inc., ATI Technologies ULC
InventorsDavid A. Strasser, Larry A. Pearlstein
Life of this patent
Estimating the term…
Abstract
One or more components of a video display device such as a television set can be powered down in response to a determination that a video input source has been paused. The video signal provided by the video input source can be analyzed to determine whether the video source is paused. When the video input source is no longer paused, the powered down components can be restored to fill power operation.
Claims18
An apparatus comprising:
- a video controller for controlling a video display component coupled to the controller, the video controller comprising circuitry configured to receive a video signal from an external video source, circuitry configured to determine whether the received video signal includes an indication that the external video source has entered a paused state, and circuitry configured to cause the video display component to be placed in a low power mode responsive to the indication and if a duration of the paused state exceeds a threshold time;
- wherein the video controller further comprises circuitry configured to
- calculate a first representative value for each of two or more first frames in the video signal and store the two or more first representative values in a buffer or memory;
- calculate a second representative value for each of two or more second frames in the video signal, the two or more second frames occurring subsequent to the two or more first frames;
- and
- determine that the external video source has entered the paused state if one of the first representative values is substantially equivalent to each of the second representative values.
3 more elements
A method implemented by a controller in a video display device, comprising:
- receiving a video signal from an external video source;
- determining whether the video signal includes an indication that the video source has entered a paused state;
- determining a time duration of the paused state;
- comparing the duration of the paused state to a threshold time;
- and
- causing power to a video display component of the video display device to be placed in a low power mode responsive to the indication and if the duration of the paused state equals or exceeds the threshold time;
- wherein determining the paused state comprises:
- calculating a first representative value for each of two or more first frames in the video signal and storing the two or more first representative values in a buffer or memory;
- calculating a second representative value for each of two or more second frames in the video signal, the two or more second frames occurring subsequent to the two or more first frames;
- and
- determining that the external video source has entered the paused state if one of the first representative values is substantially equivalent to each of the second representative values.
8 more elements
Dependencies are inferred from the claim text.