Smart Display Card with Integrated Security and Processing Chips
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Solution Overview
Problem
Conventional smart display cards without batteries face design and manufacturing cost challenges due to limited power supply from Near Field Communication (NFC), and require additional security verification for the driver chip, increasing costs and complexity.
Innovation Solution
A smart display card design that includes a connection interface, a security chip, and a processing chip with different communication protocols, allowing the processing chip to directly receive power and data signals from an external card reader and drive the display without needing additional security verification, thereby separating communication protocols to prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a driver chip is additionally disposed at rear end of security chip to enable display function, then display capability is provided, but manufacturing cost and security verification cost increase
Solution Approach 1:
The patent combines the driver chip and security chip into a single integrated chip structure. The driver chip is disposed at the rear end of the security chip within the same card body, allowing both security functions and display functions to be provided by a unified component rather than separate additions, thereby reducing manufacturing complexity and cost
Solution Approach 2:
The integrated chip performs multiple functions: it provides both security verification capabilities (through the security chip portion) and display driving capabilities (through the driver chip portion). This multi-functional design eliminates the need for separate security verification processes for additional chips, reducing both manufacturing cost and security verification cost
2Adaptability or versatility
If a driver chip is additionally disposed at rear end of security chip to enable display function, then display capability is provided, but security verification complexity increases
Solution Approach 1:
By integrating the driver chip and security chip into a single unified chip structure, the patent eliminates the need for separate security verification processes that would be required if they were separate components. The integrated structure allows the system to treat them as a single security entity, reducing verification complexity
3Use of energy by moving object
If NFC wireless power supply is used in smart display card without battery, then wireless power is provided, but available card area affects antenna design and power energy is limited
Solution Approach 1:
The patent extracts the power supply function from wireless-only NFC and introduces a battery as a separate power source. This allows the antenna to be optimized for its specific function without being constrained by the need to provide sufficient power for the entire display card, separating the power provisioning concerns from the antenna design
Data Source
AI summary
A smart display card and an operation method thereof are provided. The smart display card includes a connection interface, a security chip, a processing chip, and a display. The connection interface receives a power signal and a data signal provided by an external card reader when the smart display card is connected to the external card reader. The security chip is coupled to the connection interface and receives the power signal and the data signal. The security chip complies with a first communication protocol. The processing chip is coupled to the connection interface and receives the power signal and the data signal. The processing chip complies with a second communication protocol different from the first communication protocol. The display is coupled to the processing chip. The processing chip drives the display based on the power signal and the data signal.