Electronic Apparatus Power Reduction via Time-Positional Data Association
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Solution Overview
Problem
Conventional electronic devices that acquire and record positional information using GPS and date/time information from a clock circuit experience increased power consumption due to the need for frequent association of these data types.
Innovation Solution
An electronic apparatus that switches between two operating states to reduce power consumption by storing time information in one state and using it to associate with positional information in another state, eliminating the need for continuous date/time association and activation of marker addition functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positional information is acquired and recorded with date and time information each time, then positional information recording accuracy is improved, but power consumption increases
Solution Approach 1:
The clock circuit unit preliminarily measures and stores date and time information in advance, so that when positional information is acquired, the pre-measured time information can be directly associated with it without requiring real-time measurement, thereby reducing power consumption while maintaining recording accuracy
Solution Approach 2:
The clock circuit unit operates periodically to measure date and time information at specific intervals or trigger points rather than continuously, allowing the system to balance between having updated time information available and minimizing power consumption during non-active periods
2Ease of operation
If marker addition function is activated continuously, then user operability is improved, but power consumption increases
Solution Approach 1:
The marker addition function is designed to be dynamically activated only when specific conditions are met (such as when the electronic apparatus is in a suspended state or when positional information changes significantly), rather than running continuously, thus maintaining user operability when needed while reducing power consumption during inactive periods
Data Source
AI summary
For reducing power consumption associated with record of the positional information, an electronic apparatus comprises a positional information acquisition unit configured to acquire positional information of the electronic apparatus including time information; a memory; a clock circuit; and a processor configured to acquire first timing in a first operating state and second timing in a second operating state which differs from the first operating state, control the positional information acquisition unit to acquire, in the first operating state, the positional information of the electronic apparatus including the time information, control the memory to store a time of day measured by the clock circuit at the first timing, and control the positional information acquisition unit to acquire, in the second operating state, positional information of the electronic apparatus at the second timing.