Printing Apparatus User Authentication Character Conversion
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Solution Overview
Problem
Conventional printing apparatuses with user authentication functions struggle to register user information containing character data not supported by the authentication system, risking duplication of existing user information when converting unsupported characters.
Innovation Solution
A printing apparatus and method that include an obtaining unit, a determination unit, a conversion unit, and a control unit to identify and convert unsupported character information in user data, allowing registration without duplication by matching or creating distinct user information associations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user information containing unsupported character information is directly registered in the user authentication function, then the user information cannot be registered (registration fails), but if the character information is converted to supported characters, then the registered user information may duplicate existing user information
Solution Approach 1:
The patent applies preliminary action by checking whether converted user information duplicates existing registered information before completing the registration. The control unit performs a duplication check after character conversion but before final registration, and only proceeds with registration if no duplication is detected. This preliminary verification step prevents duplicate user information from being registered while still allowing conversion of unsupported characters.
2Adaptability or versatility
If character information in user information is converted to supported character information, then the user information can be registered in the user authentication function, but the converted user information may be the same as another piece of user information that has been registered
Solution Approach 1:
The patent applies feedback by implementing a duplication check mechanism that provides feedback on whether the converted user information already exists in the registered user information. The control unit compares the converted user information against existing registrations and uses this feedback to determine whether to proceed with registration. If duplication is detected, the registration is prevented, thus preserving user information uniqueness while maintaining character set compatibility.
3Loss of information
If user information is registered without converting unsupported character information, then user information uniqueness is maintained, but the user information cannot be registered in the user authentication function
Solution Approach 1:
The patent applies parameter changes by converting the character encoding or format of user information to match the supported character set of the user authentication function. The conversion unit transforms unsupported character information into supported characters, changing the parameter of character compatibility while preserving the essential identity of the user information through the duplication check mechanism.
Data Source
AI summary
It is determined whether or not first user information included in a received print job includes first character information that is not supported by a user authentication function. If the first user information includes the first character information, the first user information is converted to second user information in which the first character information is changed to second character information supported by the user authentication function. If the second user information does not match user information managed by the user authentication function, the first user information and the second user information are registered to the user authentication function in association with each other. If the second user information matches user information managed by the user authentication function, the first user information and third user information are registered to the user authentication function in association with each other.