Antenna Switching for Capsule Endoscope Signal Synchronization
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Solution Overview
Problem
Conventional receivers for capsule endoscopes often experience synchronization issues between the transmission and detection of electric field strength, leading to improper measurement and reduced reliability in receiving image signals.
Innovation Solution
A receiving apparatus that selectively switches between multiple antennas to continuously measure and compare received electric field strengths, quickly restoring synchronization by selecting the antenna with the strongest signal, ensuring secure measurement and improved reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver uses a fixed antenna selection method, then the device complexity is reduced, but the reliability of receiving operation deteriorates due to synchronization issues and improper electric field strength measurement
Solution Approach 1:
The patent implements dynamic antenna switching control where the receiver continuously monitors synchronization status and electric field strength measurements. When desynchronization is detected, the system automatically switches between antennas in a predetermined sequence until proper synchronization is restored, making the antenna selection adaptive rather than fixed
Solution Approach 2:
The system employs feedback mechanisms by monitoring the reception status and electric field strength measurements. When the measurement result indicates desynchronization, the system uses this feedback information to trigger antenna switching, creating a closed-loop control system that improves reliability through continuous status monitoring and automatic correction
2Reliability
If the receiver continuously switches between antennas to restore synchronization, then the reliability of receiving operation is improved, but the loss of time increases due to repeated switching during synchronization recovery
Solution Approach 1:
The patent implements preliminary action by pre-establishing a predetermined switching sequence for multiple antennas. When desynchronization is detected, the system immediately begins switching through the pre-planned sequence without delay for decision-making, reducing the time required for synchronization recovery while maintaining reliable restoration of proper reception
3Measurement precision
If the receiver measures electric field strength during transmission period only, then the measurement precision is improved, but the reliability deteriorates when transmission timing is not synchronized with detection timing
Solution Approach 1:
The system dynamically adjusts the measurement approach by initially using a broader timing window that extends beyond the exact transmission period when synchronization is uncertain. Once synchronization is established, the system transitions to measuring only during the precise transmission period, thereby maintaining measurement precision while ensuring reliability during the synchronization recovery phase
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
The apparatus effectively restores synchronization and enhances the reliability of receiving operations by continuously switching between antennas to detect the strongest signal, ensuring stable reception of image signals.
Implementation Method 1
measure received electric field strengths of the respective antennas in a cycle shorter than a transmission period of the transmission information
Data Source
AI summary
In order to restore synchronization quickly in the case where synchronization with a transmission signal is not established, when a synchronization signal is not received by an antenna selected in advance in a receiving apparatus (2), a selection controller (C2) continuously switches between antennas (6a to 6h), repeats an antenna switching process for measuring received strengths of the respective antennas in a cycle shorter than a transmission period of transmission information in a radio signal so as to detect an antenna with maximum strength, selects and switches to the detected antenna with maximum strength as a receiving antenna for receiving synchronization information, and continues the connection until at least the synchronization information is received. Further, the selection controller (C2) makes a control so that the antenna switching process for detecting the antenna with maximum strength is repeated for a period longer than a non-transmission period of transmission information.