Controller Timing for Electromagnetic Wave Timepiece Power and Noise
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Solution Overview
Problem
Electromagnetic wave timepieces face challenges in efficiently consuming electric power due to high current consumption during simultaneous operations of receiving time signals and updating display time, and suffer from decreased reception sensitivity due to noise from drive electric circuits.
Innovation Solution
An electronic device with a controller that separates the operations of acquiring time information and displaying corrected time, ensuring these operations do not overlap, thereby minimizing power consumption and avoiding noise-induced sensitivity loss during reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the receiver operates to acquire time information and the display operates to display corrected time simultaneously, then the functionality is enhanced, but the current consumption increases abruptly
Solution Approach 1:
The patent segments the operations of the receiver and display by introducing a controller that manages their execution timing. The controller ensures that the receiver acquires time information during periods when the display is not updating, and vice versa. This temporal segmentation prevents concurrent operations, thereby avoiding abrupt current consumption increases while maintaining both functions' availability.
2Measurement precision
If the drive unit operates to update display time, then the time display is updated accurately, but noise is generated that decreases electromagnetic wave reception sensitivity
Solution Approach 1:
The controller performs preliminary assessment of operational states before initiating either the receiver or display operations. By detecting whether the drive unit is currently operating or about to operate, the controller preemptively schedules receiver operations during periods when the display is stable, preventing noise interference with electromagnetic wave reception while ensuring accurate time display updates.
3Weight of moving object
If a small battery is incorporated to reduce size and weight, then the device becomes more portable, but the battery capacity is limited causing remarkable decrease in capacity under high current demand
Solution Approach 1:
The patent implements dynamic control of operational timing based on real-time detection of system state. The controller dynamically adjusts when the receiver and display operate, scheduling them during periods of lowest combined current demand. This dynamic scheduling allows the small battery to supply power efficiently without requiring large capacity, maintaining device portability while extending operational duration.
Data Source
AI summary
An electronic device includes a timer which measures a current time, a display which displays information based on the time, a receiver which, by receiving and decoding a signal, including time information indicating a standard time, which is encoded by means of a predetermined communication system, acquires the time information, and a controller which, as well as instructing the receiver to acquire the time information, corrects a deviation of the measured time, based on the time information, and instructs the display to display information based on the corrected time. The controller gives an instruction in such a way that no time period occurs in which both the receiver's operation of acquiring the time information, and the display's operation of displaying the information based on the corrected time, are executed.