Scanner Cable Authentication via Feedback Signal
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Solution Overview
Problem
Scanners used in oral cavity imaging face issues with data transmission when non-genuine cables are connected, leading to incomplete or unstable data transfer, necessitating a method to authenticate cables and ensure genuine connections.
Innovation Solution
A scanner equipped with a camera, communication interface, and processor that transmits a signal to the connected cable to determine its genuineness, records log information for non-genuine cables, and limits operations or displays notification to the image processing device, ensuring stable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cable authentication is implemented to ensure stable data transmission, then transmission reliability is improved, but device complexity increases due to additional authentication mechanisms
Solution Approach 1:
The scanner transmits an authentication signal through the cable and receives a feedback signal to verify cable genuineness. This feedback mechanism enables reliable identification of genuine cables while maintaining a relatively simple system architecture, resolving the contradiction between transmission reliability and device complexity.
Solution Approach 2:
The cable itself provides authentication information through its electrical characteristics and response to authentication signals. The cable's inherent properties (conductivity, impedance, response time) are used for self-identification, eliminating the need for complex external authentication hardware and reducing overall system complexity while ensuring reliable authentication.
2Measurement precision
If signal transmission through cable is used for authentication, then cable genuineness can be identified, but data transmission time increases due to additional authentication steps
Solution Approach 1:
Cable authentication is performed automatically and preliminarily when the cable is first connected to the scanner, before any actual image data transmission begins. This preliminary authentication ensures accurate cable identification while minimizing time loss during subsequent operations, as the authentication state is cached and does not need to be re-verified for each transmission.
Solution Approach 2:
The authentication signal is transmitted rapidly through the cable in a single quick operation, and the system skips unnecessary verification steps for genuine cables. The authentication process is optimized to complete quickly by using simple electrical characteristic measurements rather than complex multi-step verification, thus achieving accurate identification with minimal time penalty.
Data Source
AI summary
Provided is a scanner including a camera for obtaining image data by scanning an object, a communication interface including a port to which a cable for performing communication with an external device is connected, a processor, and a memory storing instructions executable by the processor, wherein the processor is configured to, by executing the instructions, transmit a signal to the cable connected to an image processing device receiving the image data, to obtain recognition information indicating whether the cable is genuine, based on a feedback signal from the cable in response to the signal, and to transmit the recognition information to the image processing device via the cable.