Playback Apparatus Video Processing Suspension for Power Reduction
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Solution Overview
Problem
Portable devices that play back video and audio content consume excessive power when all components are active, even when video playback is not necessary, such as in crowded environments where holding the device is difficult or when video is not important.
Innovation Solution
A playback apparatus with a hold setting operation that suspends video processing, including display and decoding, when not needed, to conserve power, allowing users to temporarily resume video playback if required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all components (video decoder, display, sound decoder, sound output portion) are kept operating to play back content data, then the playback function is maintained, but power consumption is excessively consumed
Solution Approach 1:
The patent divides the playback system into separate functional components (video processing portion, sound processing portion, display portion, sound output portion) that can be independently controlled. The state control portion selectively suspends only the video processing portion when video playback is not needed, while keeping the sound processing portion operational for audio-only playback, thereby reducing overall power consumption while maintaining essential playback functionality.
2Use of energy by moving object
If video processing portion is suspended to reduce power consumption, then power consumption is suppressed, but video playback capability is lost
Solution Approach 1:
The patent implements dynamic control of the video processing portion through the state control portion, which can suspend video processing when unnecessary and resume it when needed. This dynamic adjustment allows the system to adapt to different usage scenarios (audio-only playback vs. video playback) and optimize power consumption accordingly while maintaining full video playback capability when required.
Solution Approach 2:
The system changes the operational state parameter of the video processing portion between suspended and active states based on playback requirements. The state control portion monitors whether video playback is needed and adjusts the video processing portion's state accordingly, enabling the system to conserve power during audio-only playback while maintaining video capability when needed.
3Use of energy by moving object
If hold setting operation is implemented to suspend video processing, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The hold operating portion is designed to detect both hold setting operations and hold release operations, serving multiple control functions. This single operating portion manages both the suspension and resumption of video processing, reducing the need for separate control mechanisms and minimizing overall device complexity while achieving power savings.
Data Source
AI summary
A playback apparatus to play back content data including sound data includes an instruction operating portion to detect an instruction operation that instructs execution of prescribed processing, a hold operating portion to detect a hold setting operation that sets a state of not accepting the instruction operation to the instruction operating portion, a state control portion to set the state of not accepting the instruction operation to the instruction operating portion if the hold setting operation is detected by the hold operating portion, and a video processing portion to perform processing for displaying a video. If the video processing portion performs processing for displaying the video when the hold setting operation is detected, the state control portion controls the video processing portion to suspend at least a part of processing for displaying the video.