Electronic Paper Display Signal Transmission Security
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Solution Overview
Problem
Electronic paper display apparatuses used as electronic tags face security issues due to the potential unauthorized analysis and duplication of confidential information stored in IC chips, necessitating a secure method for transmitting encrypted signals.
Innovation Solution
The electronic paper display apparatus alternately displays different images using varying signal levels or frequencies to transmit encrypted signals, with the display driver outputting driving signals to encode and transmit information, and an image sensing apparatus decodes these signals to obtain the information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If confidential information is stored in IC chips for RFID tags, then information storage capability is improved, but security against unauthorized analysis and duplication deteriorates
Solution Approach 1:
The patent replaces traditional electrical/electronic signal transmission with optical signal transmission using visible light. The display panel modulates light to transmit encrypted signals, substituting the conventional RFID electromagnetic field communication with optical communication, thereby enhancing security against traditional RFID hacking methods
Solution Approach 2:
The patent utilizes different display states (different colors or luminance levels) of the electronic paper display panel to encode information. By changing the visual state of the display and using varying signal levels or frequencies, the system transmits encrypted signals that are difficult to intercept and duplicate, addressing the security vulnerability of storing confidential information in IC chips
2Reliability
If encrypted signals are transmitted by alternately displaying different images, then security of signal transmission is improved, but device complexity increases
Solution Approach 1:
The patent makes the display panel serve dual functions: both displaying visual information to users and transmitting encrypted signals simultaneously. The same display pixels that show content also modulate light to encode data, eliminating the need for separate transmission components and reducing overall system complexity despite the enhanced security protocol
Data Source
AI summary
An electronic paper display apparatus, a signal transmission system and a method thereof are provided. The electronic paper display apparatus is configured to transmit an encrypted signal. The electronic paper display apparatus includes an electronic paper display panel and a display driver. The electronic paper display panel is configured to display a first image or a second image. The display driver is electrically coupled to the electronic paper display panel and configured to output a driving signal to the electronic paper display panel. The display driver drives the electronic paper display panel to alternately display the first image and the second image for transmitting the encrypted signal by using the driving signal during a signal transmission period.