Word processor with alternative formatted and unformatted display modes
First 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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Abstract
A word processor supports an unformatted mode which includes display of a partial page and supports a formatted mode which includes display of the displaying format of an entire page of text. Both modes impose minimal burden on the display allowing use, for example, of standard display chips with a variety of monitors including a standard TV set or TV monitor. Other advanced functions include simple addition, movement and deletion of text units or blocks; simplified underscore, underscore deletion, word underscore and word underscore deletion; and an uncluttered insert display regardless of the extent of inserted text. The hyphenate fuction is improved by informing the operator, via the display, of the relation between, not only the right margin and the hyphenate candidate, but also the relation between the hyphenate candidate and the actual preceding line endings.
67 Citations
32 Claims
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1. A word processor comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A word processor comprising:
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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 in response to a periodically repeating video signal and associated horizontal and vertical sync signals, said visible image including at least S characters per row and T rows/screen and a cursor positioned in responses 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 said control means includes a page refresh RAM of byte capacity no greater than S*T/n wherein n is greater than 1, and a conventional CRT chip emitting timing signals for reading out said page refresh RAM at U characters per row and V rows per screen wherein S>
U or T>
V,and said control means further includes page refresh writing means for writing said page refresh RAM with signals to display T rows of text, each row of S characters. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A word processor comprising:
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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 lines of text, but less than a full page, in response to a periodically repeating sync 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 said improvement comprises; hyphenate means in said control means for controlling said display means when a hyphenate decision is required, including; means for storing a representation of page right margin, means for averaging text line length for n lines preceding the line requiring said hyphenate decision and generating a line length signal representing said average line length, where n>
1,means responsive to said line length signal and to said right margin representation for generating video signals to display an image of a word requiring hyphenation, and relative thereto a first marker corresponding to document right margin, and a second marker corresponding to said average line length. - View Dependent Claims (31, 32)
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Specification