Dual-Processor Display Control for Low Standby Power
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Solution Overview
Problem
Existing electronic devices with displays, such as ePaper, face challenges in managing power consumption when not connected to an external power source, necessitating efficient power management to reduce standby power consumption.
Innovation Solution
An electronic apparatus with a first processor in a low-power mode and a second processor that switches the first processor to a higher power mode when an external device is connected, allowing content reception and display while minimizing standby power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first processor operates continuously to enable content reception and display, then the device functionality is maintained, but standby power consumption increases
Solution Approach 1:
The processing system is segmented into two distinct processors: a first processor (low-power mode) and a second processor (high-performance mode). The first processor handles basic standby operations with minimal power consumption, while the second processor is activated only when external devices are connected for content reception and display. This segmentation allows the system to maintain functionality across different operational states without continuously consuming high power.
2Adaptability or versatility
If the first processor is switched to the second mode to receive content from external devices, then content reception capability is enabled, but power consumption increases
Solution Approach 1:
The system dynamically transitions between operational modes based on external device connection status. The controller monitors whether an external device is connected and automatically switches the first processor from the first mode (low-power standby) to the second mode (active content reception) only when needed. This dynamic adaptation ensures that high power consumption occurs only during actual content reception operations, not during standby periods.
3Ease of operation
If the display continuously updates content, then user convenience is improved, but power consumption increases
Solution Approach 1:
The display operates using periodic action by updating content only when new content is received from external devices, rather than continuously refreshing. The ePaper display technology inherently maintains displayed content without requiring continuous power, and the system leverages this by activating the display update function only during content reception periods when the processor is in the second mode, thereby reducing overall power consumption while maintaining user convenience.
Data Source
AI summary
Provided is an electronic apparatus including: a battery; a display; memory storing instructions; a first processor configured to execute the instructions; and a second processor, wherein the first processor consumes no power in a first mode, wherein the first processor consumes power via the battery in a second mode, wherein a power consumption of the second processor is less than a power consumption of the first processor in the second mode, wherein the second processor is configured to switch the first processor from the first mode to the second mode based on an external device being connected to the electronic apparatus while the first processor is in the first mode, and wherein the instructions, when executed by the first processor, cause the apparatus to: receive content from the external device, and display the received content.