US4352096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for providing a modulo-n check character
Assignee: Wincor Nixdorf International GmbH
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Filing: 1979-10-02
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Granted: 1982-09-28
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Expires: 1999-10-02
Abstract
Abstract Apparatus is disclosed for providing a modulo-n check character as a function of a sequence of data characters. The check character may be used to permit a check of the data character sequence for its correctness, for example, after being transmitted to a data processing installation or after printing. In the preferred embodiments each data character of the sequence is generated by one of a plurality of data character carriers which are selectively set to generate a given character. An additional check carrier is provided to generate the check character. The check carrier is set by a predetermined amount each time one of the data carriers is set so that the ultimately generated check character is a function of the data character sequence.
Inventors
- 👤 Uwe Unglaube
- 👤 Friedrich V. Miehe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:57
CPC Classifications
G; G06; G06C; G06C11/00; G06K; G06K5/00; G06M; G06M3/00; G06M3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A device for mechanically generating a modulo-n check character, said device comprising: a group of rotatable data character wheels, each wheel having a plurality of characters on its outer circumference, said character wheels being initially arranged so as to present a given sequence of data characters, one character from each wheel; a rotatable check character wheel having a plurality of characters on its outer circumference, said check character wheel being initially arranged to provide a modulo-n check character for the initially presented sequence of data characters; a rotatable shaft adapted to slide in a longitudinal direction relative to said wheels; a setting wheel mounted on the shaft inside said wheels, operative to engage one of the data wheels and upon rotation of the shaft to rotate the engaged wheel to produce a different data character in the presented sequence; and a drive wheel in fixed relationship with the check character wheel and slideably mounted on said shaft, adapted upon rotation of the shaft to rotate said check character wheel a predetermined amount every time one of the data wheels is rotated thereby continuously providing a modulo-n check character for each different presented sequence of data characters.
Claim 2
Independent Claim
196 words
A device for mechanically generating a modulo-n check character, said device comprising: a group of rotatable data character wheels, each wheel having a plurality of characters on its outer circumference, said character wheels being initially arranged so as to present a given sequence of data characters, one character from each wheel; a rotatable check character wheel having a plurality of characters on its outer circumference, said check character wheel being initially arranged to provide a modulo-n check character for the initially presented sequence of data characters; a rotatable shaft adapted to slide in a longitudinal direction relative to said wheels; a setting wheel mounted on the shaft inside said wheels, operative to engage one of the data wheels and upon rotation of the shaft to rotate the engaged wheel to produce a different data character in the presented sequence; and a drive wheel in fixed relationship with the check character wheel and slideably mounted on said shaft, adapted upon rotation of the shaft to rotate said check character wheel a predetermined amount every time one of the data wheels is rotated thereby continuously providing a modulo-n check character for each different presented sequence of data characters.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |