Browse Prior Art Database

Virtual All-Points-Addressable Tactile Display

IP.com Disclosure Number: IPCOM000034928D
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Destombes, F: AUTHOR

Abstract

Disclosed is a tactile display system offering a virtual All-Points- Addressable (APA) tactile display device. The tactile display system consists essentially of a movable display mechanism with absolute positioning and a general control system. The movable display mechanism comprises: A small-scale (fingertip size) tactile array with electromechanically driven pins. A position determination system to define the absolute coordinates of the movable display over a flat surface. This can be achieved either with a special table, such as a digitizing table containing a fine mesh of wires, or better, with an inert surface, such as a normal desk top, using acoustical location mechanisms placed at the corners. Control buttons mounted on the movable display and easily accessible by the fingers which are not used for tactile input.

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Virtual All-Points-Addressable Tactile Display

Disclosed is a tactile display system offering a virtual

All-Points- Addressable (APA) tactile display device. The tactile display system consists essentially of a movable display mechanism with absolute positioning and a general control system. The movable display mechanism comprises: A small-scale (fingertip size) tactile array with electromechanically driven pins. A position determination system to define the absolute coordinates of the movable display over a flat surface. This can be achieved either with a special table, such as a digitizing table containing a fine mesh of wires, or better, with an inert surface, such as a normal desk top, using acoustical location mechanisms placed at the corners. Control buttons mounted on the movable display and easily accessible by the fingers which are not used for tactile input. The general control system comprises: An overall control logic. A user interface (e.g., keyboard, microphone, loudspeaker, etc.). Interfaces to standard optical input devices (scanner, digitizing camera, or the like), as well as to storage and transmission media (disk drives, telephone lines, etc).

A page memory (bit or byte matrix to hold a page image).

An interface to the movable display mechanism. Once a page has been acquired from an external input device, and transferred to the page memory, the operator moves the small tactile display over the flat surface. The general control system determines...