Patent US3586833A successfully refreshed from Google Patents.
US3586833A
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Card reader format control system
Assignee: Unisys Corp
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Filing: 1969-09-12
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Granted: 1971-06-22
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Expires: 1989-09-12
Abstract
Abstract A format control system for card readers having a multiple stage shift register for storing formatting information. Each stage of the shift register corresponds to a column of information on a data punched card. A special combination of information markings in the first column of a format card permits a new format information to be read by the card reader and stored in the shift register. As punched cards are being read, a strobe member synchronizes the corresponding stage of the format shift register with the card column being read to control the data flow from the card reader to a central processor.
Inventors
- 👤 Robert H Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:41
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/01; G06K7/016
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
In a card reader, a format control system comprising: a data information card, a format information card, reading means for columnar reading said data and format information cards, format information detecting means electrically connected to said reading means and responsive to said format card, strobing means operatively connected to said reading means for periodic interrogation of said reading means coincident with each column of said data and format information cards as said cards move relative to said reading means, an information storage register electrically and operatively connected to said reading means and said strobing means and responsive to said format information detecting means for receiving and storing format information from said format information card, and control means operatively coupling said reading means and said information storage register for controlling the processing of said data information card according to the format information in said information storage register.
Claim 2
Dependent Claim
146 words
In a card reader, a format control system comprising: a data information card, a format information card, reading means for columnar reading said data and format information cards, format information detecting means electrically connected to said reading means and responsive to said format card, strobing means operatively connected to said reading means for periodic interrogation of said reading means coincident with each column of said data and format information cards as said cards move relative to said reading means, an information storage register electrically and operatively connected to said reading means and said strobing means and responsive to said format information detecting means for receiving and storing format information from said format information card, and control means operatively coupling said reading means and said information storage register for controlling the processing of said data information card according to the format information in said information storage register.
Claim 3
Dependent Claim
22 words
In a card reader, a format control system according to claim 1 wherein said information storage register is a recirculating shift register.
Claim 4
Dependent Claim
49 words
In a card reader, a format control system according to claim 1 wherein said information storage register is an 84 stage recirculating shift register wherein four stages contain predetermined synchronization information for synchronizing the corresponding data and format information card column with a stage of said information storage register.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |