Capsule Endoscope Signal Synchronization via Reference Insertion
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Solution Overview
Problem
Conventional capsule endoscopes face issues with accurate image transmission due to asynchronous radio signal synchronization between the capsule endoscope and the receiving apparatus, leading to distorted signals and incomplete image processing, which affects diagnostic accuracy.
Innovation Solution
A transmitting apparatus that inserts a reference signal into the main frame portion of the radio signal, synchronizing the frequency of the radio signal with the receiving apparatus's reference clock, and a receiving apparatus that detects and processes synchronous signals to ensure accurate image processing even in the presence of noise or distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If asynchronous mode is used for radio signal transmission between capsule endoscope and receiving apparatus, then the examinee can move freely during observation, but the receiving apparatus cannot accurately detect synchronous signals when radio signals are distorted by external noise
Solution Approach 1:
A reference signal component is inserted into the radio signal as an intermediary element. This reference signal serves as a mediator that enables the receiving apparatus to accurately detect and synchronize with the transmitted signal even when external noise distorts the image data, thereby maintaining reliable signal detection while allowing examinee mobility
Solution Approach 2:
The reference signal is preliminarily inserted into the radio signal before transmission. By preparing this synchronization marker in advance within the signal structure, the receiving apparatus can reliably detect synchronous signals even under noisy conditions, ensuring accurate signal processing while maintaining system mobility
2Reliability
If reference signal component is inserted into radio signal, then frequency synchronization between transmitting and receiving apparatus is achieved, but signal processing complexity increases
Solution Approach 1:
The radio signal is segmented into distinct components: image data portions and reference signal portions. By separating these functions into discrete segments with clear temporal or spectral boundaries, the receiving apparatus can process each component independently, reducing overall processing complexity while maintaining frequency synchronization accuracy
Data Source
AI summary
To provide a transmitting apparatus, a receiving apparatus, and an in-vivo information acquiring system that enable to acquire image information corresponding to one image, by assuredly synchronizing between a capsule endoscope and the receiving apparatus. According to the present invention, a capsule endoscope 2 that transmits a radio signal including at least an image signal S to the receiving apparatus includes a signal processor 12 that outputs the image signal S, a reference signal generator 24 that generates a reference signal including a different signal level and outputs a reference signal component D including at least the reference signal, an inserting unit 14 that inserts the reference signal component D into a predetermined heading period of the image signal S and at least a portion of a blanking period in which a signal component does not exist, and a transmitting unit 15 that wirelessly transmits the image signal S output from the inserting unit 14 to an outside.