US3316535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comparator circuit
Assignee: AT&T Inc
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Filing: 1965-04-02
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Granted: 1967-04-25
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Expires: 1985-04-02
Abstract
No abstract record available.
Inventors
- 👤 Benjamin T Fought
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:38
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/02; G06F7/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A COMPARATOR CIRCUIT FOR COMPARING A FIRST BINARY NUMBER WITH A SECOND BINARY NUMBER COMPRISING A PLURALITY OF STAGES, MEANS FOR APPLYING SIGNALS REPRESENTATIVE OF THREE CORRESPONDING ADJACENT BITS IN EACH OF SAID NUMBERS TO RESPECTIVE ONES OF SAID STAGES WITH SIGNALS REPRESENTATIVE OF ALTERNATE BITS IN EACH OF SAID NUMBERS BEING APPLIED TO TWO ADJACENT ONES OF SAID STAGES, OUTPUT MEANS IN EACH OF SAID STAGES, MEANS IN EACH OF SAID STAGES RESPONSIVE TO EITHER OF THE RESPECTIVE TWO MOST SIGNIFICANT BITS IN SAID SECOND NUMBER BEING GREATER THAN THE CORRESPONDING BIT IN SAID FIRST NUMBER FOR INHIBITING THE OUTPUT MEANS IN THE SAME STAGE, MEANS CONNECTING EACH OF SAID INHIBITING MEANS TO THE OUTPUT MEANS IN ALL LOWER ORDER STAGES FOR INHIBITING THE OPERATION OF ALL LOWER ORDER OUTPUT MEANS RESPONSIVE TO THE OPERATION OF SAID EACH INHIBITING MEANS, MEANS IN EACH OF SAID STAGES RESPONSIVE TO EITHER OF THE RESPECTIVE TWO LEAST SIGNIFICANT BITS IN SAID FIRST NUMBER BEING GREATER THAN THE CORRESPONDING BIT IN SAID SECOND NUMBER FOR OPERATING THE RESPECTIVE OUTPUT MEANS IF SAID RESPECTIVE OUTPUT MEANS IS NOT INHIBITED FROM OPERATING, AND MEANS RESPONSIVE TO THE OPERATION OF ANY ONE OF SAID OUTPUT MEANS FOR INDICATING THAT SAID FIRST NUMBER IS GREATER THAN SAID SECOND NUMBER.
Claim 2
Dependent Claim
212 words
A COMPARATOR CIRCUIT FOR COMPARING A FIRST BINARY NUMBER WITH A SECOND BINARY NUMBER COMPRISING A PLURALITY OF STAGES, MEANS FOR APPLYING SIGNALS REPRESENTATIVE OF THREE CORRESPONDING ADJACENT BITS IN EACH OF SAID NUMBERS TO RESPECTIVE ONES OF SAID STAGES WITH SIGNALS REPRESENTATIVE OF ALTERNATE BITS IN EACH OF SAID NUMBERS BEING APPLIED TO TWO ADJACENT ONES OF SAID STAGES, OUTPUT MEANS IN EACH OF SAID STAGES, MEANS IN EACH OF SAID STAGES RESPONSIVE TO EITHER OF THE RESPECTIVE TWO MOST SIGNIFICANT BITS IN SAID SECOND NUMBER BEING GREATER THAN THE CORRESPONDING BIT IN SAID FIRST NUMBER FOR INHIBITING THE OUTPUT MEANS IN THE SAME STAGE, MEANS CONNECTING EACH OF SAID INHIBITING MEANS TO THE OUTPUT MEANS IN ALL LOWER ORDER STAGES FOR INHIBITING THE OPERATION OF ALL LOWER ORDER OUTPUT MEANS RESPONSIVE TO THE OPERATION OF SAID EACH INHIBITING MEANS, MEANS IN EACH OF SAID STAGES RESPONSIVE TO EITHER OF THE RESPECTIVE TWO LEAST SIGNIFICANT BITS IN SAID FIRST NUMBER BEING GREATER THAN THE CORRESPONDING BIT IN SAID SECOND NUMBER FOR OPERATING THE RESPECTIVE OUTPUT MEANS IF SAID RESPECTIVE OUTPUT MEANS IS NOT INHIBITED FROM OPERATING, AND MEANS RESPONSIVE TO THE OPERATION OF ANY ONE OF SAID OUTPUT MEANS FOR INDICATING THAT SAID FIRST NUMBER IS GREATER THAN SAID SECOND NUMBER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |