Video Audio Controller Dual Standby Modes Power Reduction
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Solution Overview
Problem
Conventional DVD recorders face high power consumption during standby modes due to the need to quickly load system programs and start up, which increases energized time and portions, leading to increased power usage.
Innovation Solution
A video/audio processing device with a controller that switches between two standby modes, a low-power 'power-off' state and a higher-power 'apparent power-off' state, based on user operations, external equipment states, or software download events, to reduce overall power consumption during standby.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If power is supplied to all blocks all the time to shorten start time, then start speed is improved, but power consumption during standby is increased
Solution Approach 1:
The patent applies dynamics by making the power supply state changeable rather than fixed. The system dynamically switches between two standby modes (first standby mode with lower power consumption and second standby mode with higher power consumption) based on operational context. This allows the device to adapt its power consumption level to match the required start speed, resolving the contradiction between fast startup and low standby power consumption.
Solution Approach 2:
The patent changes the power consumption parameter by introducing two distinct standby modes with different power levels. The controller selects appropriate standby modes based on conditions such as whether external equipment is connected or whether software updates are available. This parameter change enables the system to optimize between speed and energy consumption by adjusting the standby power level rather than maintaining a single fixed state.
2Use of energy by moving object
If power supply to PVR unit and DVD unit is not performed during programmed recording standby, then power consumption is reduced, but start time is increased
Solution Approach 1:
The system dynamically adjusts the standby state based on operational requirements. When fast startup is needed, the system transitions to the second standby mode where power is supplied to necessary blocks. When fast startup is not critical, the system uses the first standby mode with minimal power consumption. This dynamic adjustment resolves the contradiction between reducing power consumption and minimizing start time.
Solution Approach 2:
The system performs preliminary actions by pre-loading or pre-positioning system programs in memory during the second standby mode when power is supplied. This preliminary preparation allows the device to start quickly when needed, while still maintaining an energy-saving first standby mode for situations where quick startup is not required.
3Reliability
If power is supplied to all blocks all the time, then system readiness is improved, but energizing time and number of energized portions are increased
Solution Approach 1:
The system maintains reliability by ensuring that when the second standby mode is active, power is supplied to all necessary blocks, keeping the system ready for immediate operation. When the first standby mode is active, the system accepts reduced readiness in exchange for lower power consumption. The controller intelligently selects the appropriate mode based on system state and external conditions, resolving the contradiction between system readiness and energy consumption.
Solution Approach 2:
The patent changes the energizing parameter by introducing two standby modes with different power supply configurations. The first standby mode minimizes the number of energized portions, while the second standby mode energizes necessary blocks to maintain system readiness. This parameter change allows the system to adjust its readiness level and corresponding power consumption based on operational needs.
Data Source
AI summary
A video/audio processing device, such as a DVD recorder, includes a controller for controlling a state of power-on/off. The controller has a first standby mode and a second standby mode having power consumption larger than that of the first standby mode in a power-off state of the video/audio processing device. The first standby mode is a mode for maintaining a power of the video/audio processing device in the “off” state. The second standby mode is a mode for maintaining the power of the video/audio processing device in an apparent “off” state. The controller switches between the first standby mode and the second standby mode in conjunction with a state of power-on/off of external equipment such as television.