Endoscope Image Pickup Register Data Integrity Control
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Solution Overview
Problem
Endoscope systems with CMOS solid-state image pickup devices are prone to abnormal operations due to unintended rewriting of control data in registers caused by disturbance noise from surgical instruments, leading to errors in image pickup and processing.
Innovation Solution
An image pickup apparatus and electronic endoscope system with a first register and communication circuit that control the transmission of set values to the image pickup device, using information from a controllability register to determine whether to transmit control data, thereby preventing unintended values from being written to the registers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If control data is transmitted to registers of CMOS solid-state image pickup device, then driving and reading operations can be performed, but unintended rewriting of control data may occur due to disturbance noise from surgical instruments
Solution Approach 1:
The patent applies preliminary action by comparing control data before it is written to the register. The communication circuit compares incoming control data with previously stored control data to detect potential disturbances. This preliminary comparison prevents corrupted data from being written to the register, thus maintaining data integrity while allowing normal operations to proceed.
Solution Approach 2:
The patent implements feedback by continuously monitoring and comparing control data. The communication circuit provides feedback by comparing incoming control data with stored reference data, and when a mismatch is detected, the system responds by preventing the write operation or retransmitting the data. This feedback mechanism ensures reliability without disrupting the overall operation flow.
2Productivity
If control data is continuously transmitted to maintain normal operations, then driving and reading operations remain stable, but disturbance noise from electrosurgical knife may rewrite control data with unintended values
Solution Approach 1:
The communication circuit acts as an intermediary between the data transmission source and the register. It intercepts incoming control data, compares it with stored reference data, and only allows valid data to be written to the register. This intermediary function blocks harmful disturbance noise from corrupting the register while maintaining continuous stable operations.
Solution Approach 2:
The system performs preliminary comparison of control data before it reaches the register. By comparing incoming data with reference data in advance, the system prevents corrupted data from being written, thus maintaining continuous stable operations without being affected by electrosurgical knife interference.
3Reliability
If control data is retransmitted to reset registers after detecting abnormality, then normal operations can be restored, but additional transmission time is required
Solution Approach 1:
The patent applies preliminary action by comparing control data before writing to the register, which prevents corrupted data from being written in the first place. This proactive approach avoids the need for time-consuming retransmission and register resets, thus restoring normal operations faster by preventing the abnormality from occurring.
Data Source
AI summary
An image pickup apparatus includes a head portion including an image pickup device, and a connector portion integrally connected with the head portion via a cable. The head portion includes: an electronic shutter register configured to store a set value for controlling an image pickup device, among control data transmitted from the connector portion; and a communication circuit configured to, based on information indicating whether or not to transmit the set value for controlling the image pickup device, among the control data transmitted from the connector portion, to a register provided in the image pickup device, perform control of whether or not to transmit the set value stored in the electronic shutter register to the register provided in the image pickup device.