Electric Wave Clock Partial Data Reception Power Reduction
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Solution Overview
Problem
Conventional electric wave clocks consume significant power during time code reception for time correction, and often struggle with accurate signal reception due to attenuation and noise, leading to inefficient power usage and potential errors in timekeeping.
Innovation Solution
An electric wave receiving apparatus and clock that selectively receive and demodulate time codes in specific partial periods of a frame, using a control section to compare received data with expected partial data, and a judgment section to correct timing data, thereby reducing power consumption and improving accuracy under poor signal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric wave clock receives the time code during the whole period of one frame or a plurality of frames, then the time correction can be performed, but the electric power consumption becomes large
Solution Approach 1:
The patent applies partial action by receiving and processing only a specific partial period of the time code frame that contains the necessary timing data, rather than processing the entire frame. This reduces the reception time and power consumption while still achieving accurate time correction by focusing on the critical data portion.
Solution Approach 2:
The time code frame is segmented into different portions, and the patent selectively processes only the relevant partial period containing the timing information needed for correction. This segmentation allows the system to ignore unnecessary data portions, reducing overall processing requirements and power consumption.
2Loss of information
If the electric wave clock receives the time code continuously, then complete time code data can be obtained, but the reception processing consumes large electric power
Solution Approach 1:
The patent extracts only the essential partial period containing timing data from the complete time code frame, discarding the rest of the frame data. This extraction approach maintains data completeness for the necessary correction information while eliminating unnecessary data processing that would consume additional power.
3Reliability
If the electric wave clock receives the time code in a weak signal environment, then time correction can be attempted, but the signal accuracy deteriorates due to attenuation and noise
Solution Approach 1:
By focusing reception efforts on a specific partial period of the time code frame where the timing data is located, the system concentrates its signal processing resources on the most critical information. This focused approach improves signal-to-noise ratio for the essential data while reducing the impact of attenuation and external noises present in weak signal environments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces electric power consumption during time corrections and enhances accuracy by focusing on specific data ranges within time code frames, allowing for efficient and precise timekeeping with minimal power usage and improved signal resilience.
Implementation Method 1
The time code is transmitted as a standard electric wave by performing the amplitude modulation (AM) of a carrier wave of 40 kHz or 60 kHz
Data Source
AI summary
An electric wave receiving apparatus obtains the received data in a partial period, and judges the timing of the received data in which partial data has been received by comparing the received data with the partial data. Thereby, the electric wave receiving apparatus performs correction of the second data of timing data.