Browse Prior Art Database

LIQUID CRYSTAL KEYBOARD

IP.com Disclosure Number: IPCOM000024495D
Original Publication Date: 1980-Oct-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 81K

Publishing Venue

Xerox Disclosure Journal

Abstract

A keyboard design for use with electronic typewriters such as the X e r o p 850 system is proposed. This keyboard has the following advantages: When the daisy printing wheel is changed to a different set of symbols, the new symbols can be made to appear on the keyboard on the appropriate keys. During the selection of programming and other functions on the 850 system, certain keys are selected by the operator while others are inoperative. In this disclosure, the inoperative keys will appear blank while the operating keys will exhibit suitable symbols which may even blink on and off. Since the system described allows for the rapid change of keyboard labeling, a reduction in the number of keys on the keyboard is possible because the same key may exhibit different functions at different times. On depression of 'Controlv1 or "Upper Case" keys, the keyboard would alter its labeling. For example, the depression of the Wpper Case" key would cause the keys to be relabeled in upper case format. Similarly, the depression of the "Control Key" would cause the keyboard labeling to be altered to show control symbols.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 63% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

LIQUID CRYSTAL KEY BOARD Joseph F. Stephany
Ivo P. Gates

Proposed Classification
U.S. Cl. 430/20 Int. C1. C09k 3/34

A keyboard design for use with electronic typewriters such as the Xerop 850 system is proposed. This keyboard has the following advantages:

When the daisy printing wheel is changed to a different set of symbols, the new symbols can be made to appear on the keyboard on the appropriate keys. During the selection of programming and other functions on the 850 system, certain keys are selected by the operator while others are inoperative. In this disclosure, the inoperative keys will appear blank while the operating keys will exhibit suitable symbols which may even blink on and off. Since the system described allows for the rapid change of keyboard labeling, a reduction in the number of keys on the keyboard is possible because the same key may exhibit different functions at different times. On depression of 'Controlv1 or "Upper Case" keys, the keyboard would alter its labeling. For example, the depression of the Wpper Case" key would cause the keys to be relabeled in upper case format. Similarly, the depression of the "Control Key" would cause the keyboard labeling to be altered to show control symbols.

These advantages are accomplished by providing an assembly of a transparent elastomate keyboard, whid consists of a matrix of transparent electrodes positioned over a liquid crystal display which exhibits the symbols of the daisy...