Character Input Device Correction Key for Efficient Editing
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Solution Overview
Problem
Conventional character input devices require excessive operations and space for reconversion, as they can only reconvert confirmed phrases and need a temporary enter key, limiting efficiency in character input on devices with limited key arrangements.
Innovation Solution
A character input device with a single correction key that allows deletion of unconfirmed input and changes confirmed character strings to an unconfirmed state, enabling efficient editing and correction without additional keys or operations, and storing confirmed character string information for later correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional character input device allows reconversion of confirmed phrases, then the user can correct erroneous selections, but the user needs to perform excessive operations and the device requires additional space for a temporary enter key
Solution Approach 1:
The single correction key performs multiple functions: it deletes unconfirmed input characters and converts confirmed character strings back to unconfirmed state. This multi-functionality eliminates the need for separate temporary enter keys and reduces operational complexity while maintaining correction capability.
Solution Approach 2:
The system recovers confirmed character strings by converting them back to unconfirmed state when the correction key is pressed. This allows users to retrieve previously confirmed input for correction without requiring additional keys or complex operations.
2Area of stationary object
If multiple characters are assigned to each input key to fit limited space, then the device can be compact, but it takes much time for the user to input characters
Solution Approach 1:
The system performs preliminary conversion of input characters to candidate character strings before user confirmation. This allows users to select from pre-converted candidates rather than manually inputting each character, significantly speeding up input while maintaining compact key arrangement.
Solution Approach 2:
The system creates candidate character strings as copies of the input sequence, allowing users to select from predicted candidates rather than manually typing each character. This copying mechanism accelerates input speed without requiring additional physical space.
3Ease of operation
If the device can only reconvert the immediately preceding confirmed phrase, then the operation is simple, but the user cannot correct earlier confirmed phrases
Solution Approach 1:
The system stores information about previously confirmed character strings in advance, allowing the correction key to retrieve and convert any confirmed phrase back to unconfirmed state. This preliminary storage enables flexible correction of any confirmed phrase while keeping the operation simple.
Solution Approach 2:
The system provides feedback by maintaining a record of confirmed character strings and their corresponding unconfirmed input states. When the correction key is pressed, this feedback mechanism allows the system to retrieve and convert the appropriate confirmed phrase, enhancing correction flexibility without complicating the operation.
Data Source
AI summary
A character input device provides a function of deleting an unconfirmed inputted character which the user is currently inputting, and a function of changing a confirmed character string to an unconfirmed state to a single correction key. Therefore, the character input device enables the user to carry out a character input efficiently by using limited space without requiring an excessive operation and arrangement of a new key for reconversion. Further, because the character input device holds the information on confirmed character strings even after all the character strings have been confirmed, the character input device enables the user to arbitrarily select a character string which the user wants to correct at any time, and re-edit only the portion.