Dynamic Shortcut Help Screen for Mobile Keyboards
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Solution Overview
Problem
Users of mobile communication devices with reduced format keyboards face difficulty in accessing shortcut commands, as this information is not printed on the keys, requiring memorization or manual lookup, and these commands are not consistently available across all applications.
Innovation Solution
A navigational system and shortcut help screen are implemented on the device, providing visual mapping and context-specific instructions on the display screen, allowing users to easily select functions associated with keys in various modes, with options for automatic or user-initiated display and customization of shortcut functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If shortcut commands are not printed on keys to save keyboard space, then device complexity is reduced, but ease of operation deteriorates as users must memorize or look up commands
Solution Approach 1:
A help screen is introduced as an intermediary between the user and the shortcut commands. When users press a help key, the system displays a visual map showing all shortcut commands and their functions on the screen, allowing users to reference commands without memorization while maintaining the compact keyboard design
Solution Approach 2:
The shortcut command information is moved from the two-dimensional keyboard surface to the screen dimension. This allows comprehensive command documentation to be displayed without occupying physical keyboard space, resolving the conflict between compact design and information accessibility
2Adaptability or versatility
If shortcut commands are made application-specific rather than universal, then adaptability improves for each application, but device complexity increases due to multiple command sets
Solution Approach 1:
The shortcut command system is made dynamic by allowing different shortcut assignments for different applications. The help screen automatically adapts to display the relevant shortcut commands for the currently active application, providing application-specific functionality without requiring users to manually configure complex command sets
Solution Approach 2:
A single help key provides universal access to application-specific shortcut commands. Rather than requiring separate controls for each application, the help key universally triggers the display of relevant shortcuts for whatever application is currently active, simplifying the user interface while maintaining adaptability
3Ease of operation
If help screen is automatically displayed to provide context-specific instructions, then ease of operation improves, but loss of time occurs due to automatic interruptions
Solution Approach 1:
Users maintain control over when help information is displayed by pressing the help key only when needed. The system does not automatically interrupt users, but instead provides self-service by displaying help information on demand, allowing users to balance between guidance and continuous operation based on their own needs
Data Source
AI summary
A wireless handheld communication device having a housing containing a display screen located above a physical keyboard. The keyboard includes a plurality of physical keys and corresponding indicia. Some of the keys are associated with alphabetic characters corresponding to a QWERTY array of letters A-Z and some are associated with numeric characters 0-9 corresponding to a telephone keypad arrangement. At least some of the keys associated with numeric characters are overlaid on the physical keys associated with alphabetic characters. A microprocessor is included that runs the device in at least a telephony mode, an email mode and at least one additional mode. The microprocessor displays a key-function map on the display screen indicative of enabled functions associated with particular physical keys of the keyboard which are different from any function signified by the indicia associated with the respective particular physical key.