Signature Verification Using Dynamic Data for Static Reference
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Solution Overview
Problem
Existing signature verification systems require separate software for static and dynamic signature data, reducing user convenience and facing challenges in verifying static signatures without pre-registered reference data, especially as dynamic signature data collection increases.
Innovation Solution
A signature verification apparatus and method that includes first and second verification circuitry for dynamic and static signature verification, and data registration circuitry to register reference data for both types, allowing static signature verification using generated static data from registered dynamic data when static reference data is unregistered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a general signature verification system handles both static and dynamic signature data, then verification flexibility is improved, but the system complexity increases due to needing two types of reference data
Solution Approach 1:
The patent makes the dynamic signature verification apparatus capable of performing both dynamic signature verification and static signature verification. The verification unit can verify either type of signature data, and the reference data generation unit can generate both dynamic reference data and static reference data (by converting dynamic data to static data). This multi-functional design allows a single system to handle both verification types without requiring completely separate systems.
Solution Approach 2:
The patent combines the functionality of dynamic signature verification and static signature verification into a single integrated system. Instead of maintaining separate verification systems for dynamic and static signatures, the patent merges them into one unified apparatus that can perform both verification types using shared components for data processing and verification logic.
2Ease of operation
If static signature verification is implemented without pre-registered static reference data, then user convenience is improved, but verification accuracy deteriorates
Solution Approach 1:
The patent performs preliminary conversion of dynamic signature data to static signature data and stores this converted data as static reference data in advance. When static signature verification is needed, the system can immediately use this pre-prepared reference data without requiring time-consuming collection and registration of static signature samples at the moment of verification, thus enabling both convenience and accuracy.
Solution Approach 2:
The patent uses converted static signature data derived from dynamic signature data as an intermediary reference. Instead of directly comparing dynamic signature characteristics, the system converts the dynamic reference data into static format and uses this intermediate representation for static signature verification, bridging the gap between dynamic data collection and static verification requirements.
3Measurement precision
If dynamic signature data collection increases, then dynamic verification accuracy is improved, but static signature verification becomes more difficult due to lack of static reference data
Solution Approach 1:
The patent creates a copy of dynamic signature data in static format by converting the dynamic signature data (which includes writing path information) into static signature data representation. This copied static version serves as reference data for static signature verification, eliminating the need to separately collect and register static signature samples while maintaining verification capability.
Data Source
AI summary
Disclosed herein is a signature verification apparatus including a first verification circuitry verifying a user's signature by comparing dynamic signature data indicating a change of a user's writing state over time during signing of his or her name by the user and reference data for dynamic signature, a second verification circuitry verifying the user's signature by comparing static signature data indicating a writing path during signing of his or her name by the user and reference data for static signature, and a data registration circuitry registering the reference data for dynamic signature and register the reference data for static signature. In a case where the reference data for static signature has yet to be registered by the data registration circuitry, the second verification circuitry verifies the user's signature by regarding static signature data generated from the reference data for dynamic signature already registered as the reference data for static signature.