Time Code Discrimination via Arithmetic Averaging
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Solution Overview
Problem
Conventional time code discrimination techniques fail to accurately discriminate time codes under poor radio wave conditions, leading to increased power consumption and reduced sensitivity, especially in environments with high noise ratios.
Innovation Solution
A time code discrimination apparatus that acquires multiple sets of one-minute and ten-minute digit codes, reduces erroneous discrimination through arithmetic averaging, and calculates correlation to detect synchronization points, enabling accurate time correction even in poor radio wave conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional time code discrimination techniques are used, then the apparatus can operate with simple structure, but the sensitivity is insufficient and accurate discrimination cannot be achieved under poor radio wave conditions
Solution Approach 1:
The apparatus performs preliminary actions by acquiring the same time code multiple times before final discrimination. The code acquiring section obtains identical time code sets at different time points, and the code discrimination section performs arithmetic averaging on these pre-acquired codes to reduce noise impact before making the final discrimination decision, thereby improving accuracy without requiring complex post-processing
Solution Approach 2:
The invention merges multiple acquired time code sets through arithmetic averaging in the code discrimination section. By combining several identical time code acquisitions and calculating their average, the system reduces the impact of noise and improves discrimination accuracy, effectively merging multiple measurements into a single reliable result
2Measurement precision
If the apparatus receives and discriminates time code multiple times under poor radio wave conditions, then discrimination accuracy may improve, but power consumption increases
Solution Approach 1:
The apparatus applies partial action by acquiring time codes only at specific intervals when the same code is expected to be transmitted, rather than continuously monitoring. The code acquiring section obtains time codes at predetermined time intervals, performing measurements only when necessary, which reduces overall power consumption while still achieving accurate discrimination through multiple samples
3Measurement precision
If conventional discrimination techniques are used with simple processing, then power consumption is lower, but the signal-to-noise ratio is insufficient for accurate discrimination in noisy environments
Solution Approach 1:
The system creates copies of the time code acquisition process by obtaining the same time code multiple times at different time points. The code acquiring section acquires identical time code sets repeatedly, and the code discrimination section copies this acquisition pattern, then processes these copies through arithmetic averaging to improve signal-to-noise ratio without requiring complex signal processing algorithms
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
The apparatus achieves accurate time code discrimination and correction by improving the signal-to-noise ratio, reducing power consumption, and maintaining accuracy under challenging radio wave conditions.
Implementation Method 1
The time code is transmitted by performing the amplitude modulation (AM) on a carrier wave of 40 kHz or 60 kHz
Data Source
AI summary
Disclosed is a time code discrimination apparatus that discriminates a time code including one-minute digit and ten-minute digit codes. The time code discrimination apparatus includes: a first code acquiring section to acquire a plurality of sets of one-minute digit codes at a time interval in which the plurality of sets of one-minute digit codes are equal in value of one-minute digit; and a first code discrimination section to execute a process of reducing erroneous discrimination on the plurality of sets of one-minute digit codes acquired by the first code acquiring section, and to discriminate the one-minute digit codes.