Signal Relay Frequency Calibration for Low-Cost Clock Accuracy
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Solution Overview
Problem
High-speed signal relay apparatuses face challenges in achieving high accuracy at a low cost, as existing designs relying on crystal-oscillating technology for clock signal generation are costly and difficult to maintain.
Innovation Solution
A signal relay apparatus and method with a frequency calibration mechanism, incorporating a clock generation circuit, frequency generation circuit, clock measuring circuit, and frequency adjusting circuit, which generates and adjusts a target frequency signal to maintain accuracy within predetermined ranges without using crystal-oscillating technology, thereby reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If crystal-oscillating technology is used to generate clock signal, then clock signal accuracy is improved, but device cost increases
Solution Approach 1:
The patent changes the operating parameters of an RC oscillator by dynamically adjusting resistive and capacitive values through digital control. The frequency generation circuit modifies the time constant parameters to compensate for process variations and temperature drift, achieving accurate clock signals without crystal oscillators. This parameter adjustment approach resolves the contradiction by providing crystal-level accuracy through software-controlled hardware parameters.
Solution Approach 2:
The patent creates a digital copy of the clock signal characteristics through frequency generation circuits that synthesize the required timing parameters. Instead of relying on physical crystal oscillators, the system uses digital logic to replicate the essential timing properties, thereby achieving the same functional outcome at lower cost and with greater flexibility.
2Speed
If high speed data transmission is implemented, then transmission bandwidth is improved, but signal accuracy becomes harder to maintain
Solution Approach 1:
The patent implements dynamic frequency adjustment mechanisms that adapt the clock signal parameters in real-time based on transmission conditions. The frequency generation circuit can dynamically change operating frequencies to optimize signal integrity at high speeds, allowing the system to maintain accuracy while achieving high bandwidth transmission through adaptive parameter modification.
Solution Approach 2:
The system incorporates feedback mechanisms where the generated clock signal is monitored and compared against reference parameters. Based on this feedback, the frequency generation circuit adjusts its output to maintain signal accuracy even at high transmission speeds, ensuring that bandwidth increases do not compromise signal integrity.
Data Source
AI summary
The present invention discloses a signal relay apparatus having frequency calibration mechanism that includes a clock generation circuit, a frequency generation circuit, a clock measuring circuit, a frequency adjusting circuit and a transmission circuit. The clock generation circuit generates a source clock signal. The frequency generation circuit receives the source clock signal and generates a target frequency signal according to a conversion parameter. The clock measuring circuit measures a first frequency offset of a source frequency relative to a first predetermined frequency according to an external reference clock signal. The frequency adjusting circuit adjusts the conversion parameter according to the first frequency offset when the first frequency offset is not within a first predetermined range such that a second frequency offset of a target frequency relative to a second predetermined frequency is within a second predetermined range. The transmission circuit performs signal transmission according to the target frequency signal.