Fluorescent Pulse Verification for Jitter-Resistant Data Reading
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Solution Overview
Problem
Conventional information reading in optical discs is prone to errors due to time sequence instability or jitter, leading to deviations in read signals and incorrect information content.
Innovation Solution
An information verification method that utilizes fluorescent signals generated from discrete fluorescent spots, determining information symbols based on pulse signal amplitudes and verifying the information sequence through the quantity and time interval of pulse signals, eliminating the need for strict clock synchronization during data reading and writing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional information reading method using clock timing information is used, then information content can be determined from read signal, but time sequence instability or jitter causes deviation in read signal leading to high bit error rate
Solution Approach 1:
The patent replaces the conventional clock timing-based information reading method with a fluorescent signal-based method. Instead of using mechanical/electrical clock synchronization, the invention uses optical fluorescent signals with inherent time intervals between pulses to encode information, thereby eliminating the bit errors caused by time sequence instability and jitter in conventional systems
Solution Approach 2:
The patent changes the fundamental parameter for information encoding from clock timing to fluorescent pulse characteristics. Information is encoded in the presence/absence of fluorescent pulses and their time intervals rather than relying on clock-synchronized timing, making the system immune to time sequence instability while maintaining high reading accuracy
2Measurement precision
If strict clock synchronization is required during data reading and writing, then information can be read with timing reference, but it increases device complexity and reduces ease of operation
Solution Approach 1:
The patent eliminates the need for complex clock synchronization systems by replacing them with a fluorescent signal-based approach. The fluorescent spots inherently provide timing information through their spatial arrangement and excitation sequence, removing the need for separate clock generation and synchronization hardware
Solution Approach 2:
The fluorescent spots themselves serve as the timing reference through their inherent spatial distribution and excitation characteristics. Each fluorescent spot's excitation and emission provide self-contained timing information, making the system self-synchronized without requiring external clock signals or complex synchronization mechanisms
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
Efficiently verifies the accuracy of read information and detects surface defects by analyzing pulse signals, reducing bit errors and avoiding the high bit error rate caused by data jitter in conventional optical discs.
Implementation Method 1
a fluorescent signal is obtained. The fluorescent signal is an electrical signal generated based on a plurality of fluorescent spots, and the fluorescent signal includes a plurality of pulse signals
Data Source
AI summary
An information verification method and related device are provided. In the method, a fluorescent signal may be obtained, where the fluorescent signal is an electrical signal generated based on a plurality of fluorescent spots, and the fluorescent signal includes a plurality of pulse signals; an information symbol corresponding to each pulse signal may be determined based on a preset amplitude threshold and an amplitude of each pulse signal; an information sequence may be obtained based on the information symbol corresponding to each pulse signal; and a verification result of the information sequence may be obtained based on a first quantity of pulse signals between any two pulse signals in the plurality of pulse signals and a time interval between the any two pulse signals. According to the application, resulting in an error in information content corresponding to the read signal can be resolved.