Endoscope Optical Transmission Voltage Control
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Solution Overview
Problem
Endoscope systems face challenges in maintaining optimal transmission quality of optical signals due to variations in input voltage and potential failures in the optical transmission module, leading to issues like light amount reduction and jitter worsening, which are difficult to address with fixed voltage settings.
Innovation Solution
The endoscope system includes an optical transmission module with a light emitting element driven by a adjustable voltage, a signal amplitude measuring circuit, and a power supply adjusting circuit that determines the transmission state based on acquired information to optimize the input voltage for the optical transmission module, ensuring consistent transmission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed voltage setting is used for the optical transmission module, then the device complexity is reduced, but the transmission quality deteriorates due to variations in input voltage and potential failures
Solution Approach 1:
The patent implements a feedback mechanism where the signal amplitude measuring circuit continuously monitors the amplitude of the image pickup signal after optical transmission. The power supply adjusting circuit receives this amplitude information and automatically adjusts the input voltage to the optical transmission module to maintain optimal transmission quality. This closed-loop feedback system resolves the contradiction by dynamically adapting the voltage setting based on actual transmission conditions, thereby maintaining high reliability without requiring overly complex manual intervention systems.
Solution Approach 2:
The system enables self-service operation where the optical transmission module automatically adjusts its own input voltage based on real-time signal amplitude measurements. The power supply adjusting circuit autonomously modifies the voltage level in response to detected signal degradation, allowing the system to self-correct transmission quality issues without external intervention. This self-regulating mechanism maintains reliable transmission while keeping the control system relatively simple.
2Reliability
If the input voltage to the optical transmission module is increased, then the transmission quality is improved, but the energy consumption increases
Solution Approach 1:
The patent employs dynamic voltage adjustment where the input voltage to the optical transmission module is not fixed but continuously adapted based on real-time signal amplitude measurements. The power supply adjusting circuit dynamically modifies the voltage level according to actual transmission conditions, increasing voltage only when necessary to maintain transmission quality and reducing it when conditions are favorable. This dynamic approach resolves the contradiction by optimizing energy consumption while maintaining reliable transmission through adaptive rather than static voltage control.
Solution Approach 2:
The system changes the voltage parameter dynamically based on transmission conditions. The power supply adjusting circuit modifies the input voltage parameter to the optical transmission module in response to signal amplitude variations, thereby maintaining optimal transmission quality without consistently operating at high voltage levels. This parameter adaptation strategy ensures high transmission quality only when necessary, reducing overall energy consumption while maintaining reliability.
3Reliability
If signal amplitude measurement and automatic voltage adjustment are implemented, then the transmission quality is maintained, but the device complexity increases
Solution Approach 1:
The patent merges the signal amplitude measurement function and voltage adjustment control into an integrated system. The signal amplitude measuring circuit and power supply adjusting circuit work as a unified control mechanism, where the measurement directly informs the adjustment decision. This merging of functions reduces overall system complexity compared to having separate, independent control systems, while still achieving reliable transmission quality maintenance through coordinated signal monitoring and voltage control.
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 configuration allows for accurate detection of transmission quality and adjustment of the input voltage, preventing transmission failures and maintaining optimal signal transmission even if the amplitude of the image pickup signal becomes small due to operation failures, thereby ensuring consistently good transmission quality.
Implementation Method 1
an optical transmission module including a light emitting element configured to be driven by a predetermined applied voltage and convert the first electric signal from the image pickup device into an optical signal and output the optical signal
Implementation Method 2
an optical fiber configured to transmit the optical signal outputted from the optical transmission module
Implementation Method 3
an optical reception module configured to receive the optical signal transmitted from the optical fiber and convert the optical signal into a predetermined second electric signal and output the predetermined second electric signal
Data Source
AI summary
An endoscope includes an optical transmission module configured to convert each of the image pickup signal and the test signal into an optical signal and output the optical signal, and a signal amplitude measuring section configured to add signal amplitude information to the image pickup signal and the test signal, and a video processor includes an optical reception module configured to receive the optical signals and convert each of the optical signals into an electric signal and output the electric signal, an information acquiring section configured to acquire transmission information on each of the optical signals, the transmission information including the signal amplitude information, a determination section configured to determine a state of transmission of the optical signal, and a power supply adjusting section configured to adjust the applied voltage for the optical transmission module according to a result of the determination and output the applied voltage.