Patent US4765764A successfully refreshed from Google Patents.
US4765764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard
Assignee: DIGITEXT Inc A CORP OF NJ
•
Filing: 1986-02-20
•
Granted: 1988-08-23
•
Expires: 2006-02-20
Abstract
Abstract A keyboard for use with a stenographic transcription and translating assembly possessing word processing capabilities having horizontal and vertical groupings of keys indicating the generation of signals characterizing consonant and vowel letters or non-phonetic language construction command instructions such as transcribing translation or word processing instructions.
Inventors
- 👤 Jerrold P. Lefler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:22
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08; B41J5/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
216 words
A stenographic keyboard for generating unique, computer readable and translatable signals to provide unambiguous and context independent translation of a stenographic record comprising, from bottom to top: a lower row of four vowel keys, which from left to right are A O E U; a lower middle row of keys arranged to define a first left hand group, a first center group and a first right hand group, the first left hand group keys, from left to right are Z, S, C, W, R, the first center group defining a first stroke ambiguity resolution key, and the first right hand group of keys, from left to right, are R, B, G, S, Z; an upper middle row of keys arranged to define a second left hand group, a second center group and a second right hand group, the second left hand group of keys from left to right are "first control key", K, T, P, H, the second center group defining a second stroke ambiguity resolution key and the second right hand group of key, from left to right are V, P, L, T, D; and a top row of individually operable keys defining control keys for controlling computers in a first mode and defining ambiguity resolution keys for resolving stroking ambiguities in a second mode.
Claim 2
Dependent Claim
216 words
A stenographic keyboard for generating unique, computer readable and translatable signals to provide unambiguous and context independent translation of a stenographic record comprising, from bottom to top: a lower row of four vowel keys, which from left to right are A O E U; a lower middle row of keys arranged to define a first left hand group, a first center group and a first right hand group, the first left hand group keys, from left to right are Z, S, C, W, R, the first center group defining a first stroke ambiguity resolution key, and the first right hand group of keys, from left to right, are R, B, G, S, Z; an upper middle row of keys arranged to define a second left hand group, a second center group and a second right hand group, the second left hand group of keys from left to right are "first control key", K, T, P, H, the second center group defining a second stroke ambiguity resolution key and the second right hand group of key, from left to right are V, P, L, T, D; and a top row of individually operable keys defining control keys for controlling computers in a first mode and defining ambiguity resolution keys for resolving stroking ambiguities in a second mode.
Claim 3
Dependent Claim
62 words
The stenographic keyboard of claim 1 wherein each top row key is aligned above an upper middle row key, the top row key aligned above the V key being, in the second mode, an F, and the top row key aligned above the P, L, T and D keys being, in the second mode, a PP, LL, TT and DD key, respectively.
Claim 4
Dependent Claim
50 words
The stenographic keyboard of claims 1 or 2 wherein one of the top row keys is, in the second mode, a "double letter key" which when depressed with another letter key from the bottom, lower middle, upper middle or top rows causes such other letter to be doubled in translation.
Claim 5
Dependent Claim
81 words
The stenographic keyboard of claims 1 or 2 wherein the first and second ambiguity resolution keys are coupled so that the simultaneous depression of either the first or second ambiguity resolution key with one or more other letter keys defining a stroke identifies the stroke as being a prefix, and the simultaneous depression of both the first and second ambiguity resolution keys with one or more other letter keys defining a stroke distinguishes the translation of said stroke from its homonym.
Claim 6
Dependent Claim
79 words
The stenographic keyboard of claim 3 wherein the first and second ambiguity resolution keys are coupled so that the simultaneous depression of either the first or second ambiguity resolution key with one or more other letter keys defining a stroke identifies the stroke as being a prefix, and the simultaneous depression of both the first and second ambiguity resolution keys with one or more other letter keys defining a stroke distinguishes the translation of said stroke from its homonym.
Claim 7
Dependent Claim
27 words
The stenographic keyboard of claims 1 or 2 wherein the "first control key" defines a "cancel" key which, when depressed singly, deletes the key stroke immediately preceding.
References Cited (Backward Citations)
US1294611A
Cited
US1843929A
Cited
US2319273A
Cited
US2505046A
Cited
US3557927A
Cited
US3558820A
Cited
US3970185A
Cited
US4370970A
Cited
WO1981003641A1
Cited
GB2122947A
Cited
FR2542888A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |