Power Management Circuitry Sleep Mode Control
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Solution Overview
Problem
Consumer electronic devices and remote control devices continue to consume power even when in off/standby modes due to ongoing operations, leading to increased energy usage and reduced battery life.
Innovation Solution
Implementing a 'sleep' or 'vacation' mode that suspends or reduces the frequency of operations typically performed in off/standby modes, allowing devices to conserve power by selectively configuring electronic devices and remote control devices into three modes: on, off/standby, and sleep/vacation modes, with the option to set timers for automatic mode changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices continue to perform operations in off/standby mode (such as monitoring receiver, receiving EPG, firmware updates, decoding programming signals), then the device maintains quick on capability and operational readiness, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the operational state of circuitry between standby mode and sleep mode based on user presence detection. When the user is detected to be away, the system transitions from a static standby state to a dynamic sleep state, reducing power consumption while maintaining the ability to quickly resume operations when the user returns.
Solution Approach 2:
The system changes the operational parameters of the device by introducing a sleep mode with modified power consumption characteristics. In this mode, certain circuitry operations are suspended or performed less frequently, changing the power state from continuous standby operation to intermittent operation, thereby reducing overall power consumption while preserving essential functionality.
2Ease of operation
If remote control devices continue to perform operations in standby mode, then the device remains responsive to user input, but battery life is reduced
Solution Approach 1:
The remote control device dynamically adjusts its operational mode based on whether it is being actively used. When no user input is detected for a predetermined period, the system transitions from an active standby state to a low-power sleep state, reducing battery consumption while maintaining the ability to quickly respond when the user picks up the remote again.
3Loss of energy
If devices enter sleep/vacation mode to reduce power consumption, then energy usage decreases, but the device must exit the mode to resume full operations
Solution Approach 1:
The system performs preliminary actions by maintaining certain circuitry in a partially active state during sleep mode, allowing for faster resumption of full operations. Additionally, the user presence detection system is kept active to anticipate when the user will return, preparing the device to exit sleep mode proactively rather than waiting for a wake-up signal, thereby reducing the effective time loss.
Data Source
AI summary
A method of controlling power consumption in an electronic device may include selecting between an on mode of the electronic device in which first circuitry of the electronic device is configured to perform a first operation, an off/standby mode in which second circuitry of the electronic device is configured to perform a second operation, and a sleep/vacation mode in which the second circuitry is controlled to at least one of reduce a frequency of and suspend performance of the second operation. An electronic device may include: first circuitry configured to perform a first operation when the electronic device is in an on mode; second circuitry configured to perform a second operation when in an off/standby mode; and a circuitry controller configured to control the second circuitry to at least one of reduce a frequency of and suspend performance of the second operation when in a sleep/vacation mode.