Capsule Endoscope Image Sensor Frame Puncturing Power Management
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Solution Overview
Problem
Capsule type endoscopes experience unnecessary power consumption due to continuous power supply to analog and digital circuits during image data frame processing, especially when moving through the gastrointestinal tract and capturing images before reaching the target internal organ.
Innovation Solution
An image sensor with a frame-puncturing function that selectively interrupts power supply to the analog circuit at predetermined frames and delays power supply until the capsule endoscope arrives at the target internal organ, using a frame counter and time counter to manage power usage effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power is supplied to analog and digital circuits for every image data frame, then image data can be continuously processed and transmitted, but unnecessary power consumption occurs when the capsule endoscope moves slowly or captures images before reaching the target internal organ
Solution Approach 1:
The patent applies periodic action by implementing frame puncturing that selectively interrupts power supply to the analog circuit at predetermined frames while maintaining periodic operation. The frame puncturing unit receives a frame puncturing signal to determine whether to process each frame, creating a periodic pattern of power supply and interruption that reduces overall power consumption while maintaining necessary image processing capability
Solution Approach 2:
The patent applies preliminary action through the start delay unit that delays power supply to the analog circuit for a desired time period. This delay ensures that power is not supplied during the initial phase when the capsule endoscope is still traveling to the target internal organ, preventing unnecessary power consumption before the actual examination begins
2Duration of action of moving object
If power is supplied continuously to capture all frames, then complete image data is obtained, but battery life is reduced due to unnecessary power consumption during slow movement or pre-target imaging
Solution Approach 1:
The patent applies the taking out principle by extracting and removing unnecessary frames from the image processing sequence through frame puncturing. The frame puncturing unit selectively discards predetermined frames based on the frame puncturing signal, removing only those frames that contribute to power consumption without affecting the diagnostic value of the captured images
Data Source
AI summary
An image sensor for a capsule type endoscope in which an image data is processed in frame units, the image sensor having analog and digital circuits, the image sensor includes a frame-puncturing unit for interrupting a power supply to the analog circuit at a predetermined frame among a plurality of frames. The image sensor may include a start delay unit for delaying a power supply to the analog circuit for a desired time.