Patent US3225347A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3225347A Expired / Lapsed US ⏱️ 0.0 years remaining

Analog digital converter

Assignee: GENERAL DATA CORP
•
Filing: 1962-02-28
•
Granted: 1965-12-21
•
Expires: 1982-02-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 James H Doyle

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 10:56
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/18

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 256 words
IN AN ANALOG TO DIGITAL CONVERTER: A PLURALITY OF COMPARISON STAGES OF DESCENDING ORDER; EACH OF SAID COMPARISON STAGES COMPRISES A PLURALITY OF COMPARATORS FOR INDICATING A DIFFERENT DIGITAL VALUE IN A PRESELECTED BINARY NUMBER SYSTEM; EACH OF THE COMPARATORS BEING NORMALLY ARRANGED TO BE IN A PRESELECTED INDICATING CONDITION AND TO BE SWITCHABLE TO ANOTHER INDICATING CONDITION WHERREBY THE CONDITION OF ALL THE COMPARATORS DEFINE A SINGLE BINARY DIGIT IN THE NUMBER SYSTEM; EACH OF SAID COMPARATORS INCLUDING: INDIVIDUAL INPUT CIRCUIT MEANS DIRECTLY CONNECTED TO BE RESPONSIVE TO AN OUTPUT INDICATION FROM EACH OF THE HIGHER VALUED COMPARATORS FOR MODIFYING THE INPUT RESPONSE OF EACH OF THE LOWER VALUED COMPARATORS ONLY WHEN AT LEAST ONE OF THE HIGHER VALUED COMPARTORS IS SWITCHED TO SAID ANOTHER INDICATING CONDITION TO PROVIDE THE CORRECT OUTPUT AT EACH OF THE REMAINING COMPARATORS TO CORRECTLY DIGITZE THE APPLIED ANALOG SIGNAL, AND MEANS FOR APPLYING AN ANALOG SIGNAL TO BE DIGITIZED TO EACH OF THE COMPARATORS SUBSTANTIALLY SIMULTANEOUSLY BY MEANS OF SAID INDIVIDUAL INPUT CIRCUITS; A SUMMING CIRCUIT CONNECTED TO BE RESPONSIVE TO THE ANALOG SIGNAL TO BE DIGITIZED; FURTHER CIRCUIT CMEANS CONNECTED TO BE RESPONSIVE TO THE OUTPUT INDICATIONS FROM EACH OF THE COMPARATORS FOR PROVIDING A BINARY WEIGHTED SIGNAL TO THE SUMMARY CIRCUIT CORRESPONDING TO THE BINARY ORDER OF THE COMPARATOR; AND MEANS FOR APPLYING THE PORTION OF THE ANALOG SIGNAL REPRESENTED BY THE OUTPUT OF SAID SUMMARY CIRCUIT TO A LOWER ORDER COMPARISON STAGE TO COMPRISE THE ANALOG SIGNAL TO BE DIGITIZED BY SAID LOWER ORDER COMPARISON STAGE.

References Cited (Backward Citations)

US2897486A Cited
US2941196A Cited
US3019426A Cited
US3100298A Cited
US3050644A Cited
US3041469A Cited
US3038091A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-12-20 1969-06-21 1969-12-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-12-20 1973-06-21 1973-12-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-12-20 1977-06-21 1977-12-21 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag