Patent US2412365A successfully refreshed from Google Patents.
US3927752A
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Keyboard and encoding system for photocomposition of scientific text including multiline mathematical equations
Assignee: AMERICAN INSTITUTE OF PHYSICS
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Filing: 1974-01-22
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Granted: 1975-12-23
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Expires: 1994-01-22
Abstract
Abstract A main typographic keyboard having character keys and operation keys is employed in connection with an auxiliary keyboard having ''''shift'''' keys to provide an encoded output representing regular text as well as displayed mathematical expressions for computerassisted photocomposition. The main keyboard permits multiline mathematical expressions to be typed in a predetermined serial order using character keys in conjunction with a special subset of operation keys for designating mathematical formats, such as a fraction, and for delineating their component parts by logical ''''punctuation marks''''. The shift key set on the auxiliary keyboard is used in conjunction with the main keyboard for (1) capitalizing letters, (2) changing character sets and fonts, (3) indicating a superior or inferior position for a character relative to a line and (4) designating boldface characters. A shift key for any one of these four functions can be combined with other shift keys for any or all other corresponding functions. A system for monitoring keyboarded data is also disclosed.
Inventors
- 👤 Roger W Jones
- 👤 J C Fineman
- 👤 James R Roesser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/0219; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; B41J5/107; Y; Y10; Y10S; Y10S400/00; Y10S400/90; Y10S400/904
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
156 words
A system for typographic composition of scientific text, comprising a keyboard having character keys, a plurality of format keys indicating forms for different mathematical expressions, and two format delineator keys including a separator key for delineating the component parts for a plurality of mathematical expressions represented by said format keys and a terminator key indicative of the end of an expression with one of said formats, and digital means responsive to operation of said keyboard for producing an output in response to any one of said format keys indicating that subsequently keyed characters are to be printed in one location determined by the format represented by said one format key until a separator key strike, if any, whereupon subsequently keyed characters are to be printed in another location according to said format until said terminator key is struck ending the influence on said subsequently keyed characters of the format represented by the immediately preceding format key.
Claim 2
Independent Claim
156 words
A system for typographic composition of scientific text, comprising a keyboard having character keys, a plurality of format keys indicating forms for different mathematical expressions, and two format delineator keys including a separator key for delineating the component parts for a plurality of mathematical expressions represented by said format keys and a terminator key indicative of the end of an expression with one of said formats, and digital means responsive to operation of said keyboard for producing an output in response to any one of said format keys indicating that subsequently keyed characters are to be printed in one location determined by the format represented by said one format key until a separator key strike, if any, whereupon subsequently keyed characters are to be printed in another location according to said format until said terminator key is struck ending the influence on said subsequently keyed characters of the format represented by the immediately preceding format key.
Claim 3
Dependent Claim
61 words
The system of claim 1, wherein said keyboard also includes a displayed equation key, said digital means being responsive to said displayed equation key for producing an output indicating that an expression keyed between the striking of said displayed equation key and said separator key, uncorrelated with any format keys within said expression, is to be positioned in a predetermined manner.
Claim 4
Dependent Claim
35 words
The system of claim 2, wherein said digital means output further indicates that an expression keyed between said uncorrelated separator key strike and an uncorrelated terminator key, is to be printed in another predetermined position.
Claim 5
Independent Claim
190 words
A system for typographic composition of scientific text, comprising a keyboard having a set of character keys ordinarily representing a particular alphabet, a plurality of auxiliary shift keys including a capital-shift key, a plurality of special font keys for varying the identity of said character keys, and a plurality of superior/inferior character position keys for varying the position of keyed characters relative to a line, encoding means operatively connected to said keyboard for providing a multibit encoded output representing the actuation of keys on said keyboard, a first exclusive subset of the bits in said encoded output distinctly representing the actuation of character keys, a second exclusive subset of said bits representing the condition of said capital-shift key, a third exclusive subset of said bits, similarly representing any one of said plurality of font keys, and a fourth exclusive subset of said bits similarly representing any one of said plurality of character position keys, whereby said multibit output represents not only the character key actuated on said keyboard but also and simultaneously any combination of a capital-shift key, one of said font keys and one of said character position keys.
Claim 6
Independent Claim
190 words
A system for typographic composition of scientific text, comprising a keyboard having a set of character keys ordinarily representing a particular alphabet, a plurality of auxiliary shift keys including a capital-shift key, a plurality of special font keys for varying the identity of said character keys, and a plurality of superior/inferior character position keys for varying the position of keyed characters relative to a line, encoding means operatively connected to said keyboard for providing a multibit encoded output representing the actuation of keys on said keyboard, a first exclusive subset of the bits in said encoded output distinctly representing the actuation of character keys, a second exclusive subset of said bits representing the condition of said capital-shift key, a third exclusive subset of said bits, similarly representing any one of said plurality of font keys, and a fourth exclusive subset of said bits similarly representing any one of said plurality of character position keys, whereby said multibit output represents not only the character key actuated on said keyboard but also and simultaneously any combination of a capital-shift key, one of said font keys and one of said character position keys.
Claim 7
Dependent Claim
32 words
The system of claim 4, wherein said character position keys include six keys respectively indicative of three superior positions and three inferior positions relative to a line for a simultaneously keyed character.
Claim 8
Dependent Claim
36 words
The system of claim 5, wherein said keyboard further includes key means for indicating a change in the rules applicable to determining the lateral position of a superior/inferior character in the midst of other superior/inferior characters.
Claim 9
Dependent Claim
29 words
The system of claim 5, wherein said keyboard further includes key means indicating that a subsequently struck superior/inferior character is to be shifted to the right of what precedes.
Claim 10
Dependent Claim
19 words
The system of claim 4, wherein said keyboard includes key means for locking any of actuated auxiliary shift keys.
Claim 11
Dependent Claim
23 words
The system of claim 4, wherein the character keys on said keyboard bear a plurality of symbols color-coded with said special font keys.
Claim 12
Dependent Claim
147 words
A keyboard comprising a set of character keys and a set of operation keys including a plurality of format keys indicating different mathematical expression formats, a separator key for delineating the component parts of a format, and a terminator key for ending a format, said format keys including a multipart format key bearing a legend having at least two distinct parts indicative of a mathematical expression format having at least two corresponding parts, visual indicators associated respectively with the parts of said legend, and control means operatively connected to said indicators responsive to the striking of said multipart format key for activating one of said indicators, said control means being responsive to the striking of said separator key for deactivating said one indicator and activating another one of said indicators, said control means being further responsive to the striking of said terminator key for deactivating said indicators.
Claim 13
Dependent Claim
147 words
A keyboard comprising a set of character keys and a set of operation keys including a plurality of format keys indicating different mathematical expression formats, a separator key for delineating the component parts of a format, and a terminator key for ending a format, said format keys including a multipart format key bearing a legend having at least two distinct parts indicative of a mathematical expression format having at least two corresponding parts, visual indicators associated respectively with the parts of said legend, and control means operatively connected to said indicators responsive to the striking of said multipart format key for activating one of said indicators, said control means being responsive to the striking of said separator key for deactivating said one indicator and activating another one of said indicators, said control means being further responsive to the striking of said terminator key for deactivating said indicators.
References Cited (Backward Citations)
US2947357A
Cited
US3530239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |