US3182180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Division system
Assignee: Control Data Corp
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Filing: 1960-11-17
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Granted: 1965-05-04
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Expires: 1980-11-17
Abstract
No abstract record available.
Inventors
- 👤 Roy A Keir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:29
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/52; G06F7/535; G06F5/00; G06F5/01; G06F7/483; G06F7/487; G06F7/4873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
299 words
A BINARY DIGITAL DIVIDING SYSTEM FOR DEVELOPING A SIGNAL-REPRESENTED QUOTIENT IN FLOATING-POINT FORM INCLUDING A MANTISSA AND A CHARACTERISTIC OF SIGNAL-REPRESENTED NUMERATOR AND DENOMINATOR VALUES IN SIMILAR FORM, COMPRISING: FIRST REGISTER MEANS FOR REGISTERING SIGNALS REPRESENTATIVE OF THE DENOMINATOR MANTISSA; MEANS FOR SHIFTING THE CONTENTS OF SAID FIRST REGISTER MEANS WHEREBY TO NORMALIZE SAID DENOMINATOR MANTISSA; SECOND REGISTER MEANS FOR REGISTERING SIGNALS REPRESENTATIVE OF THE NUMERATOR MANTISSA; BINARY MEANS INITIALLY IN A FIRST STATE FOR MANIFESTING FIRST AND SECOND MODES OF OPERATION FOR SAID SYSTEM; MEANS FOR SHIFTING THE CONTENTS OF SAID SECOND REGISTER MEANS INTO MORESIGNIFICANT DIGIT LOCATIONS UNTIL A ONE APPEARS IN THE MOST-SIGNIFICANT DIGIT LOCATION IN SAID SECOND REGITER MEANS; THIRD REGISTER MEANS FOR REGISTERING THE QUOTIENT MANTISSA AS DEVELOPED DIGIT-BY-DIGIT FROM THE MOST-SIGNIFICANT DIGIT; MEANS OPERATIVE UPON EACH SHIFT OF THE CONTENTS OF SAID SECOND REGISTER MEANS TO ENTER THE NEXT DIGIT OF THE QUOTIENT MANTISSA SAID THIRD REGISTER MEANS AS A ONE DURING SAID FIRST MODE AND AS A ZERO DURING SAID SECOND MODE; MEANS FOR SUBSTRACTING THE CONTENTS OF SAID FIRST REGISMEANS FROM THE CONTENTS OF SAID SECOND REGISTER MEANS UPON THE OCCURRENCE OF A ONE IN THE MOSTSIGNIFICANT DIGIT LOCATION OF SAID SECOND REGISTER MEANS; MEANS OPERATIVE DURING SAID FIRST MODE OF OPERATION FOR ENTERING THE NEXT DIGIT OF THE QUOTIENT MANTISSA IN SAID THIRD REGISTER MEANS AS A ONE IF A POSITIVE REMAINDER RESULTS AND AS A ZERO IF A NEGATIVE REMAINDER RESULTS FROM SAID SUBTRACTION; MEANS OPERATIVE DURING SAID SECOND MODE OF OPERATION FOR ENTERING THE NEXT DIGIT OF THE QUOTIENT MANTISSA AS A ZERO IF A POSITIVE REMAINDER RESULTS AND AS A ONE IF A NEGATIVE REMAINDER RESULTS FROM SAID SUBTRACTION; MEANS FOR ALTERING THE STATE OF SAID BINARY UPON THE OCCURRENCE OF A NEGATIVE REMAINDER FROM SAID SUBTRACTION.
Claim 2
Dependent Claim
299 words
A BINARY DIGITAL DIVIDING SYSTEM FOR DEVELOPING A SIGNAL-REPRESENTED QUOTIENT IN FLOATING-POINT FORM INCLUDING A MANTISSA AND A CHARACTERISTIC OF SIGNAL-REPRESENTED NUMERATOR AND DENOMINATOR VALUES IN SIMILAR FORM, COMPRISING: FIRST REGISTER MEANS FOR REGISTERING SIGNALS REPRESENTATIVE OF THE DENOMINATOR MANTISSA; MEANS FOR SHIFTING THE CONTENTS OF SAID FIRST REGISTER MEANS WHEREBY TO NORMALIZE SAID DENOMINATOR MANTISSA; SECOND REGISTER MEANS FOR REGISTERING SIGNALS REPRESENTATIVE OF THE NUMERATOR MANTISSA; BINARY MEANS INITIALLY IN A FIRST STATE FOR MANIFESTING FIRST AND SECOND MODES OF OPERATION FOR SAID SYSTEM; MEANS FOR SHIFTING THE CONTENTS OF SAID SECOND REGISTER MEANS INTO MORESIGNIFICANT DIGIT LOCATIONS UNTIL A ONE APPEARS IN THE MOST-SIGNIFICANT DIGIT LOCATION IN SAID SECOND REGITER MEANS; THIRD REGISTER MEANS FOR REGISTERING THE QUOTIENT MANTISSA AS DEVELOPED DIGIT-BY-DIGIT FROM THE MOST-SIGNIFICANT DIGIT; MEANS OPERATIVE UPON EACH SHIFT OF THE CONTENTS OF SAID SECOND REGISTER MEANS TO ENTER THE NEXT DIGIT OF THE QUOTIENT MANTISSA SAID THIRD REGISTER MEANS AS A ONE DURING SAID FIRST MODE AND AS A ZERO DURING SAID SECOND MODE; MEANS FOR SUBSTRACTING THE CONTENTS OF SAID FIRST REGISMEANS FROM THE CONTENTS OF SAID SECOND REGISTER MEANS UPON THE OCCURRENCE OF A ONE IN THE MOSTSIGNIFICANT DIGIT LOCATION OF SAID SECOND REGISTER MEANS; MEANS OPERATIVE DURING SAID FIRST MODE OF OPERATION FOR ENTERING THE NEXT DIGIT OF THE QUOTIENT MANTISSA IN SAID THIRD REGISTER MEANS AS A ONE IF A POSITIVE REMAINDER RESULTS AND AS A ZERO IF A NEGATIVE REMAINDER RESULTS FROM SAID SUBTRACTION; MEANS OPERATIVE DURING SAID SECOND MODE OF OPERATION FOR ENTERING THE NEXT DIGIT OF THE QUOTIENT MANTISSA AS A ZERO IF A POSITIVE REMAINDER RESULTS AND AS A ONE IF A NEGATIVE REMAINDER RESULTS FROM SAID SUBTRACTION; MEANS FOR ALTERING THE STATE OF SAID BINARY UPON THE OCCURRENCE OF A NEGATIVE REMAINDER FROM SAID SUBTRACTION.
References Cited (Backward Citations)
GB802656A
Cited
US3033457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |