Endoscope DC Balance Transmission via Dynamic Bit Inversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional endoscope apparatuses face challenges in ensuring DC balance during signal transmission, which is crucial for electrical safety, and existing methods like Manchester encoding increase the complexity and bit count, making it difficult to maintain DC balance without increasing the transmission rate.
Innovation Solution
The endoscope apparatus employs a transmission device that calculates DC balance values, inverts bits when necessary, and transmits intermediate data via a serial signal, while the reception device processes the signal to maintain DC balance without increasing the bit count, using a software-based approach to ensure DC balance without raising the transmission rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If code conversion methods like Manchester encoding are used to ensure DC balance, then DC balance is achieved, but the bit count increases and transmission rate becomes difficult to maintain
Solution Approach 1:
The patent changes the parameter of data representation by inverting bits based on cumulative DC balance calculation. Instead of using fixed encoding schemes like Manchester encoding, the system dynamically inverts data bits when the cumulative DC balance exceeds a threshold, thereby maintaining DC balance without increasing bit count.
Solution Approach 2:
The patent applies bit inversion as the core mechanism to maintain DC balance. When the cumulative DC balance becomes too positive or too negative, the system inverts the polarity of subsequent data bits to counterbalance the DC offset, achieving DC balance through inversion rather than through encoding expansion.
2Reliability
If code conversion methods like Manchester encoding are used to ensure DC balance, then DC balance is achieved, but transmission rate decreases
Solution Approach 1:
The system dynamically changes the transmission parameter by selectively inverting bits based on real-time DC balance monitoring. This allows the transmission rate to remain at the original rate without the overhead of expanded encoding schemes, as only necessary bits are inverted rather than all bits being encoded.
Solution Approach 2:
By inverting bits only when DC balance requires correction rather than encoding all bits, the system maintains the original transmission rate while achieving DC balance. The inversion approach is more efficient than Manchester encoding because it applies transformation only when necessary.
3Reliability
If DC balance is ensured through conventional methods, then electrical safety is maintained, but device complexity increases
Solution Approach 1:
The system performs self-service by automatically monitoring its own DC balance and applying corrections through bit inversion without external intervention. The cumulative DC balance is calculated and compared against thresholds, and inversion is applied automatically, reducing the need for complex external control mechanisms.
Solution Approach 2:
The system implements feedback by continuously calculating the cumulative DC balance and using this information to control bit inversion. The DC balance calculation provides feedback that drives the inversion decision, creating a closed-loop system that maintains electrical safety through automatic adjustment.
Data Source
AI summary
An endoscope apparatus has a transmission device of an endoscope and a reception device of a processor. The transmission device calculates a DC balance value of input data, compares the DC balance value and a cumulative value thereof, and compares the sign of the DC balance value and the sign of the cumulative value. When the signs are the same sign, the transmission device generates intermediate data by exchanging a first value and a second value with each other for all the bits of the input data, and generates predetermined information indicating that all the bits have been inverted. When the signs are different signs, the transmission device performs a process of setting the input data as the intermediate data and transmits the intermediate data by a serial signal.