B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/119, 340/175
B41J 5/10 (2006.01)
Patent
CA 1224737
Abstract of the Disclosure A manual entry keyboard system for data processing with as few as twelve keyswitches produces enough entry signals for direct alphanumeric input of sequential characters, one character per finger stroke of a single finger at high speeds from a single hand in a touch typing mode. A live keyboard is particularly adapted for use with modern data processing systems for an effective high speed manual interface compatible with their comprehensive capabilities by changing live key- switch modes for direct entry in numeric calculation, alphanumeric data processing and the like modes. To further improve accuracy of manual keyboard input, (1) the reach of the fingers from home keys in touch typing position is reduced, (2) the data is entered with few operator mental decisions where errors are more frequent, (3) different key locations are touch coded by keyboard tactile elements such as depression, textured and ridge contour configuration on a keyboard surface to produce operator touch feedback, (4) the keyswitches must be moved to input data thereby to permit finger rest on the keys without error and to provide to the operator feedback of signal completion by the switch movement feel, (5) the key- switches are located side-by-side in a single field for compact use on pocket sized version with advantages of maximizing the number of selections and reducing errors by reduction of the reach from a home key position, and (6) the keyswitches conform to natural hand geometry for more comfort and reduced errors. A twelve key symmetrical telephone type matrix will provide full alphabetic capability as well as numeric and thus can serve by itself to replace PBX type telephone switchboards while processing numeric signals in a conventional manner.
497766
Laitram Corporation (the)
Meredith & Finlayson
LandOfFree
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