Alphanumeric Text Entry Interface for Handheld Devices
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Solution Overview
Problem
Existing user interfaces for entering alphanumeric text, such as those with 12 keys, are not adaptable for handheld devices like remote controls or smartphones, as they are limited by key size and label dimensions, making it difficult to accommodate a sufficient number of characters and are not easily scalable.
Innovation Solution
A user interface with a display monitor that allows users to interact using two control inputs for cursor movement and scrolling in different orientations, enabling the presentation of alphanumeric characters in parallel arrays for efficient selection, using directional keys and a scroll wheel, allowing for the entry of strings of characters through a spatial configuration that can be optimized for various devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed key layout with 12 keys is used, then each key can be associated with a specific group of characters, but the number of keys is limited and cannot be easily adapted to handheld devices
Solution Approach 1:
The patent applies dynamics by making the character group assignments dynamic rather than fixed. The controller dynamically assigns different groups of characters to each key based on the current input context, allowing the same physical key layout to adapt to different input requirements without changing the hardware structure.
Solution Approach 2:
The patent changes the parameter of character group assignment from static to variable. The system monitors input patterns and changes which group of characters is associated with each key based on the current input state, enabling the interface to adapt to different input scenarios using the same physical keys.
2Loss of information
If each key has a label listing all associated characters, then users can see available characters, but the label size is limited by key dimensions reducing legibility
Solution Approach 1:
The patent segments the character display into multiple portions. Instead of showing all characters in a single label, the display shows a first portion of characters in a first location and a second portion of characters in a second location, allowing more characters to be displayed with better legibility.
Solution Approach 2:
The patent extends the character display into another spatial dimension by displaying characters across different locations on the display rather than confining them to a single key label area. This multi-location display approach increases the effective display area available for character information.
3Quantity of substance
If more characters are accommodated on each key label, then character selection capability increases, but the characters become smaller and less legible
Solution Approach 1:
The patent divides the character set associated with each key into multiple segments or groups. The display shows different segments in different locations, allowing a larger total number of characters to be represented while maintaining adequate size and legibility in each display location.
Solution Approach 2:
The patent utilizes additional display space by extending character presentation across multiple locations rather than compressing all characters into a single key label area. This dimensional expansion allows more characters to be displayed without reducing their size.
4Ease of manufacture
If a standardized key interface is used, then implementation is simple, but it cannot be easily applied to various handheld electronic devices
Solution Approach 1:
The patent creates a universal interface system where the same physical key layout can serve multiple functions and adapt to different devices. The controller interprets key inputs in context and dynamically adjusts character group assignments, allowing a single standardized physical interface to work effectively across different handheld electronic devices with varying input requirements.
Data Source
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AI summary
An information processing system has a display monitor and a user-interface for text entry. The display monitor presents the set of alphanumerical characters in a spatial configuration of three parallel horizontal rows or three parallel vertical columns. The "left"- button and the "right" button of the directional buttons of the user-interface control the selection of a group of alphanumerical characters, one of each of the three parallel arrays and positioned in the same column. The "up"-button and the "down"-button of the directional buttons and the "OK"-button, sitting in between, are used to select a specific one of the alphanumerical characters from the selected group.