Browse Prior Art Database

Keyboard With Programmable Keyface Graphics

IP.com Disclosure Number: IPCOM000044502D
Original Publication Date: 1984-Dec-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Hakenewerth, PA: AUTHOR [+2]

Abstract

A CRT with a pressure-sensitive faceplate (See U.S. Patent 4,340,777) is used as a user input device in public access applications, such as Automatic Teller Machines. Specific areas of the faceplate, graphically defined and labeled by the CRT, and visible through the faceplate, are pressed by the user to input the label data or instruction. The unbroken surface of the faceplate is an unfamiliar keyboard to some users and leads to erroneous input due to keying between the sensing areas. This problem is eliminated by a faceplate with raised separated areas for each input label. This more closely resembles familiar keyboards. Fig. 1 shows faceplate 1 mounted in front of a CRT 2. The mounting includes pressure sensitive devices 3. The front surface of the faceplate is configured with projecting "keys" 4.

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Keyboard With Programmable Keyface Graphics

A CRT with a pressure-sensitive faceplate (See U.S. Patent 4,340,777) is used as a user input device in public access applications, such as Automatic Teller Machines. Specific areas of the faceplate, graphically defined and labeled by the CRT, and visible through the faceplate, are pressed by the user to input the label data or instruction. The unbroken surface of the faceplate is an unfamiliar keyboard to some users and leads to erroneous input due to keying between the sensing areas. This problem is eliminated by a faceplate with raised separated areas for each input label. This more closely resembles familiar keyboards. Fig. 1 shows faceplate 1 mounted in front of a CRT 2. The mounting includes pressure sensitive devices 3. The front surface of the faceplate is configured with projecting "keys" 4. There is one "key" for each required input datum or instruction. Fig. 2 shows keyface labels 5, generated by the CRT under computer program control, visible through the "keys" 4. Alternatively, with proper design of the "keys" to provide space, the labels could be displayed in the area above each "key". When a "key" is pressed by the user, force is exerted on the four pressure sensing devices 3. The force sensed by each device is different and varies according to the position of the "key". The electrical output of the devices 3 is processed by a computer to determine the position of the "key" that was pressed. The computer...