Patent Document ID: 4686649
Application ID: 06681420

Base Claim:
1. A word processor comprising: input means including a keyboard with a plurality of keys, each associated with a different graphic or function including at least two cursor control keys, said input means producing a unique key code for each actuated key or group of keys, display means including a cathode ray tube for producing a visible image of multiple line of text in response to a periodically repeating video signal and associated horizontal and vertical sync signals, said visible image including a cursor positioned in response to actuation of said cursor control keys, control means responsive to said input means for manipulating and storing said unique key codes and for controlling said display means, wherein the improvement comprises: dispaly control means in said control means for generating one of a first and second video signal, for driving said display means, in response to selection of one of a first and second display mode respectively, said first video signal producing an unformatted text display having less display text lines than in a typical page, and less text character capacity per text line than in a typical page, said second video signal producing a formatted display of capacity at least equal to the number of lines in a typical page wherein each of a plurality of different text characters is represented by and identical visible image.

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Claim 7:
7. The apparatus of claim 1 in which both said first and second video signals includes a cursor signal and in which said control means includes a cursor position control means for generating said cursor signal located in response to said cursor control keys, first refresh RAM means for controlling said first video signal including potential cursor locations only within vertical and horizontal boundaries, second refresh RAM means for controlling said second video signal including potential cursor locations beyond said vertical and horizontal boundaries, said cursor position control means including transition means responsive to selection of said first video display mode following said second video display mode for relocating said cursor, from a location beyond said horizontal and vertical boundaries, to a location within said boundaries.