Patent US3239818A successfully refreshed from Google Patents.
US3239818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory system
Assignee: International Business Machines Corp
•
Filing: 1961-12-28
•
Granted: 1966-03-08
•
Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harold E Petersen
- 👤 Teig Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:41
CPC Classifications
G; G11; G11C; G11C15/00; G11C15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A SYSTEM FOR SEARCHING THE DATA CONTENTS OF A MEMORY HAVING A PLURALITY OF BI-STABLE STORAGE ELEMENTS, EACH OF WHICH IS SELECTIVELY PRE-ESTABLISHED IN ONE OF TWO STABLE STATES TO MANIFEST THE RESPECTIVE BINARY BITS OF A PLURALITY OF STORED DATA WORDS COMPRISING, (1) MEANS FOR SELECTING PREDETERMINED BIT POSITIONS OF ANY GIVEN MEMORY WORD FOR COMPARISON WITH CORRESPONDING BIT POSITIONS OF THE REMAINING WORDS; (2) MEANS FOR COMPARING THE RESPECTIVE STABILITY STATES OF ANY GIVEN MEMORY WORD FOR COMPARISON WITH BIT POSITIONS OF THE GIVEN WORD SIMULTANEOUSLY WITH ALL OF THE STABILITY STATES OF THOSE ELEMENTS MANIFESTING THE BITS IN CORRESPONDING BIT POSITIONS OF THE REMAINING WORDS; (3) REGISTERING MEANS FOR REGISTERING THOSE OF THE REMAINING WORDS HAVING BI-STABLE ELEMENTS WHOSE STABILITY STATES MATCH THE STATES OF THE CORRESPONDING ELEMENTS MANIFESTING THE BITS IN THE SELECTED BIT POSITIONS OF THE GIVEN WORD; AND (4) MEANS UNDER CONTROL OF SAID REGISTERING MEANS FOR CONTROLLING THE READOUT OF THE TOTAL DATA CONTENT OF THOSE OF THE REMAINING WORDS REGISTERING A MATCH.
Claim 2
Independent Claim
170 words
A SYSTEM FOR SEARCHING THE DATA CONTENTS OF A MEMORY HAVING A PLURALITY OF BI-STABLE STORAGE ELEMENTS, EACH OF WHICH IS SELECTIVELY PRE-ESTABLISHED IN ONE OF TWO STABLE STATES TO MANIFEST THE RESPECTIVE BINARY BITS OF A PLURALITY OF STORED DATA WORDS COMPRISING, (1) MEANS FOR SELECTING PREDETERMINED BIT POSITIONS OF ANY GIVEN MEMORY WORD FOR COMPARISON WITH CORRESPONDING BIT POSITIONS OF THE REMAINING WORDS; (2) MEANS FOR COMPARING THE RESPECTIVE STABILITY STATES OF ANY GIVEN MEMORY WORD FOR COMPARISON WITH BIT POSITIONS OF THE GIVEN WORD SIMULTANEOUSLY WITH ALL OF THE STABILITY STATES OF THOSE ELEMENTS MANIFESTING THE BITS IN CORRESPONDING BIT POSITIONS OF THE REMAINING WORDS; (3) REGISTERING MEANS FOR REGISTERING THOSE OF THE REMAINING WORDS HAVING BI-STABLE ELEMENTS WHOSE STABILITY STATES MATCH THE STATES OF THE CORRESPONDING ELEMENTS MANIFESTING THE BITS IN THE SELECTED BIT POSITIONS OF THE GIVEN WORD; AND (4) MEANS UNDER CONTROL OF SAID REGISTERING MEANS FOR CONTROLLING THE READOUT OF THE TOTAL DATA CONTENT OF THOSE OF THE REMAINING WORDS REGISTERING A MATCH.
References Cited (Backward Citations)
US3031650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |