Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1995-06-16
1998-02-10
Hayes, Gail O.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345901, 345905, 463 44, 463 45, 463 46, 463 4, G09G 100, G06F 1502
Patent
active
057179387
ABSTRACT:
A hand held electronic book is adapted to receive any number of replaceable cartridges. Each cartridge holds an alternate text and requires a separate set of functions. A predetermined set of function keys on the keyboard of the electronic book at predetermined positions are color coded. Each cartridge of a set of replaceable cartridges has the same number of similarly positioned and similarly color coded key-like designations. These designations provide an indication of the new function that the corresponding key on the keyboard has when the book accesses the cartridge involved. Thus color and position are the codes used to select the function indicated on the cartridge to the key on the keyboard that performs the function.
REFERENCES:
patent: 4386776 (1983-06-01), Bromley
patent: 5181029 (1993-01-01), Kim
patent: 5601489 (1997-02-01), Komaki
Garthwaite Robert L.
Meade Sherri L.
Franklin Electronic Publishers Incorporated
Hayes Gail O.
Yount Steven R.
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