Interactive Keyboard Keys with Integrated Refreshable Braille Display
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Solution Overview
Problem
Visually impaired individuals face productivity issues due to the need to constantly move their hands between traditional keyboards and refreshable braille displays, which are typically used for inputting and receiving information separately.
Innovation Solution
A hybrid keyboard system that integrates a refreshable braille display into select keys, allowing users to input data and receive output simultaneously by using interactive keys with momentary switches and actuator systems to raise pins for braille character display, along with a keyboard controller and computing system to process keystrokes and messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional keyboard and refreshable braille display are used separately, then input and output functions are provided, but the user must constantly move hands between devices which reduces productivity
Solution Approach 1:
The patent combines the refreshable braille display with keyboard keys by integrating actuators directly into the key structure. Each key cap contains a braille display element that can be independently controlled, allowing the keyboard to simultaneously function as both input device and output device, eliminating the need for separate hand movement between devices.
Solution Approach 2:
The keyboard keys are designed to perform multiple functions: traditional key input functionality and braille character display functionality. Each key serves as both an input key and a braille display element, allowing the same physical structure to provide both input and output capabilities.
2Loss of information
If refreshable braille displays are placed adjacent to or below traditional keyboards, then output is provided, but the constant moving of hands between devices slows down the process
Solution Approach 1:
The braille display is merged with the keyboard by integrating display elements into the key caps themselves. This eliminates the spatial separation between input and output devices, allowing users to access information without moving their hands to a separate display location.
Solution Approach 2:
The braille display elements are integrated into the vertical dimension of the key structure, with actuators positioned beneath the key cap surface. This allows braille characters to be displayed on the same physical footprint as the keyboard keys, eliminating the need for additional horizontal or vertical space.
3Productivity
If interactive keys with integrated braille displays are used, then input and output can occur on the same keys, but the device complexity increases
Solution Approach 1:
The keyboard is segmented into multiple independent interactive keys, each with its own actuator and braille display element. This modular approach allows each key to function independently while maintaining the overall keyboard structure, making the complexity manageable through repetition of standardized units.
Solution Approach 2:
A controller system serves as an intermediary between the computer and the interactive keys, managing the complex coordination between key press detection and braille character display. The controller receives input from the momentary switches and sends appropriate signals to the actuators, abstracting the complexity from the user.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables visually impaired users to engage in computer interactions more efficiently by allowing input and output on the same keys, reducing the need for hand movement and enhancing productivity.
Implementation Method 1
each interactive key includes a momentary switch for detecting a keystroke and includes a actuator system for selectively extending pins through a surface of the interactive key
Data Source
AI summary
A hybrid keyboard and associated systems and methods. A disclosed hybrid keyboard includes a set of interactive keys, each having an integrated refreshable braille display, wherein each interactive key includes a momentary switch for detecting a keystroke and includes a actuator system for selectively extending pins through a surface of the interactive key; and a keyboard controller that includes a keystroke input handler for receiving and processing signals associated with detected keystrokes and includes a braille display handler that processes received messages and transmits message signals to selected interactive keys to output braille characters.