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US3234366A Expired / Lapsed US ⏱️ 0.0 years remaining

Divider utilizing multiples of a divisor

Assignee: International Business Machines Corp
•
Filing: 1961-11-15
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Granted: 1966-02-08
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Expires: 1981-11-15
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Abstract

No abstract record available.

Inventors

  • 👤 Claud M Davis
  • 👤 Veer John A De

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 13:22
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/498; G06F7/4983

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 397 words
A DIVIDER FOR A DIGITAL COMPUTER, COMPRISING: (A) A PLURALITY OF DIVISOR MULTIPLE REGISTERS EACH FOR HOLDING A DIFFERENT SELECTED MULTIPLE OF A DIVISOR, ONE OF SAID MULTIPLES BEING EQUAL TO THE DIVISOR TIMES ONE; (B) A SHIFTABLE ACCUMULATOR REGISTER HAVING HIGH AND LOW ORDER ENDS FOR HOLDING A MULTI-DIGIT DIVIDEND REMAINDER; (C) SINGLE SUBSTRACTING MEANS INCLUDING MEANS FOR DETERMINING WHETHER A CURRENT SUBSTRACTION PROUDCES AN OVERDRAFT; (D) QUOTIENT REGISTERING MEANS INCLUDING A PLURALITY OF BISTABLE DEVICES EACH REPRESENTING A BIT POSITION OF A MULTI-BIT COMBINATORIAL CODE IN WHICH A QUOTIENT DIGIT VALUE MAY BE REPRESENTED, THE SAID BIT POSITIONS OF SAID CODE EACH BEING ASSOCIATED WITH ONE OF SAID MULTIPLES OF THE DIVISOR AND HAVING A WEIGHT VALUE EQUAL TO THE ASSOCIATED MULTIPLE; (E) PROGRAM MEANS, OPERATIVE DURING THE DEVELOPMENT OF EACH QUOTIENT, COUPLED TO SAID DIVISOR MULTIPLE REGISTERS, SAID ACCUMULATOR REGISTER AND SAID QUOTIENT REGISTERING MEANS FOR CONTROLLING SUCCESSIVE SUBTRACTIONS OF THE SAID PLURALITY OF MULTIPLES OF THE DIVISOR FROM SELECTED DIGIT POSITIONS OF THE DIVIDEND REMAINDER BY SUCCESSIVELY CONNECTING SLECTED ONES OF SAID DIVISOR MULTIPLE REGISTERS AND PREDETERMINED DIGIT POSITIONS OF SAID ACCUMULATOR TO SAID SUBTRACTING MEANS AND CAUSING THE SUBTRACTION MEANS TO PERFORM SUBTRACTIONS OF THE CONTENTS OF EACH OF THE SELECTED DIVISOR MULTIPLE REGISTERS FROM THE CONTENTS OF SAID PREDETERMINED DIGIT POSITIONS OF THE ACCUMULATOR TO PRODUCE A REMAINDER VALUE; (F) MEANS RESPONSIVE TO EACH OPERATION OF SAID SUBTRACTION MEANS FOR SETTING A PREDETERMINED BISTABLE DEVICE OF SAID QUOTIENT REGISTERING MEANS IN ACCORDANCE WITH THE DETERMINATION OF THE OVERDAFT MEANS; (G) MEANS OPERABLE FOR EACH SUBTRACTION FOR SUBSTITUTING THE REMAINDER PRODUCED BY THE SUBTRACTION FOR THE DIVIDEND REMAINDER IN SAID ACCUMULATOR REGISTER IF THE OVERDRAFT MEANS DETERMINES THAT NO OVERDRAFT WAS PRODUCED; (H) MEANS FOR SHITING SAID ACCUMULATOR REGISTER ONE DIGIT POSITION AT A TIME; (I) MEANS OPERABLE AFTER A PREDETERMINED ONE OF SAID DIVISOR MULTIPLES HAS BEEN SUBTRACTED FOR (1) READING THE COMBINATORIAL CODE REPRESENTATION OF A QUOTIENT DIGIT FROM SAID BISTABLE DEVICES OF THE QUOTIENT REGISTERING MEANS, (2) RESETTING SAID BISTABLE DEVICES, (3) OPERATING SAID SHIFTING MEANS TO SHIFT THE CONTENTS OF SAID ACCUMULATOR REGISTER ONE DIGIT POSI TION TOWARD THE HIGH ORDER END, AND (4) CAUSING SAID PROGRAM MEANS TO REPEAT SUCCESSIVE SUBTRACTIONS OF SAID PLURALITY OF DIVISOR MULTIPLES, AND (J) MEANS RESPONSIVE TO A PREDETERMINED NUMBER OF SHIFTS OF SAID ACCUMULATOR REGISTER FOR HALTING OPERATION OF SAID DIVIDER.
Claim 2
Dependent Claim 185 words
IN THE DIVIDER OF CLAIM 8 WHICH DEVELOPS QUOTIENT DIGITS BY SUCCESSIVE SUBTRACTIONS OF A PLURALITY OF DIFFERENT MULTIPLES OF A DIVISOR FROM SELECTED DIGIT POSITIONS OF A DIVIDEND REMAINDER, THE IMPROVEMENT IN MEANS, OPERABLE PRIOR TO THE NORMAL DIVISION OPERATION DEFINED IN CLAIM 8, FOR DEVELOPING LEADING QUOTIENT ZEROS COMPRISING: (K) MEANS FOR SHIFTING SAID SHIFTABLE REGISTER ONE DIGIT POSITION TO THE LEFT; (1) CONTROL MEANS RESPONSIVE TO A SIGNAL INITIATING DIVISION OR TO A SECOND SIGNAL FOR CAUSING SAID SUBTRACTION MEANS TO SUBTRACT THE MULTIPLE EQUAL TO SAID DIVISOR TIMES ONE FROM SELECTED DIGIT POSITIONS OF SAID DIVIDEND; (M) MEANS RESPONSIVE TO A SIGNAL FROM SAID OVERDRAFT MEANS INDICATING THE PRESENCE OF AN OVERDRAFT FOR ACTIVATING SAID SHIFTING MEANS TO SHIFT THE CONTENTS OF THE ACCUMULATOR REGISTER ONE DIGIT POSITION TOWARD THE HIGH ORDER END, AND FOR SIGNALLING A ZERO QUOTIENT DIGIT AND FOR PRODUCING SAID SECOND SIGNAL, AND (N) MEANS RESPONSIVE TO A SIGNAL FROM SAID OVERDRAFT MEANS INDICATING THE ABSENCE OF AN OVERDRAFT FOR DISCONTINUING OPERATION OF SAID LEADING QUOTIENT ZERO DEVELOPING MEANS AND FOR INITIATING NORMAL OPERATION OF SAID DIVIDER.

References Cited (Backward Citations)

US2493862A Cited
US2834543A Cited
US3018957A Cited
US2879001A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-02-07 1969-08-09 1970-02-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-02-07 1973-08-09 1974-02-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-02-07 1977-08-09 1978-02-08 $7700.00 Window Closed / Lapsed

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