GB1497677A - Contents addressable memory systems - Google Patents

Contents addressable memory systems

Info

Publication number
GB1497677A
GB1497677A GB46818/74A GB4681874A GB1497677A GB 1497677 A GB1497677 A GB 1497677A GB 46818/74 A GB46818/74 A GB 46818/74A GB 4681874 A GB4681874 A GB 4681874A GB 1497677 A GB1497677 A GB 1497677A
Authority
GB
United Kingdom
Prior art keywords
items
stored
identifier
addressable memory
search keys
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB46818/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Services Ltd
Original Assignee
Fujitsu Services Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Services Ltd filed Critical Fujitsu Services Ltd
Priority to GB46817/74A priority Critical patent/GB1497676A/en
Priority to GB46818/74A priority patent/GB1497677A/en
Priority to IN1512/CAL/1975A priority patent/IN142852B/en
Priority to HU75IE703A priority patent/HU175242B/en
Priority to AU83801/75A priority patent/AU494703B2/en
Priority to DE2547031A priority patent/DE2547031C3/en
Priority to FR7532184A priority patent/FR2289962A1/en
Priority to GB43290/75A priority patent/GB1497680A/en
Publication of GB1497677A publication Critical patent/GB1497677A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90—Details of database functions independent of the retrieved data types
    • G06F16/903—Querying
    • G06F16/90335—Query processing
    • G06F16/90344—Query processing by using string matching techniques
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks

Landscapes

  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Data Mining & Analysis (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

1497677 Data processing INTERNATIONAL COMPUTERS Ltd 22 July 1975 [29 Oct 1974] 46818/74 Heading G4A A contents-addressable memory stores data items each of which includes an identifier portion and a value portion; the items are scanned in sequence with each identifier being compared with two stored search keys. When a match is detected between the identifier portion of one of the items and one of the stored search keys, the value portion of that item is stored and subsequent items are scanned in an attempt to find an item whose identifier portion matches the other of the two search keys and whose value portion satisfies a predetermined relationship with the stored value portion from the first matching item. The disclosure is identical to that of Specifications 1492260, 1497676, 1497678 and 1497679.
GB46818/74A 1974-10-29 1974-10-29 Contents addressable memory systems Expired GB1497677A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB46817/74A GB1497676A (en) 1974-10-29 1974-10-29 Data processing systems
GB46818/74A GB1497677A (en) 1974-10-29 1974-10-29 Contents addressable memory systems
IN1512/CAL/1975A IN142852B (en) 1974-10-29 1975-07-31
HU75IE703A HU175242B (en) 1974-10-29 1975-08-05 Data processing system
AU83801/75A AU494703B2 (en) 1975-08-08 Improvements in or relating to data processing systems
DE2547031A DE2547031C3 (en) 1974-10-29 1975-10-21 Data processing device
FR7532184A FR2289962A1 (en) 1974-10-29 1975-10-21 Access using comparison of multiplexer and keyword - has multiplexed output from disc store compared with keyword to control search process for access
GB43290/75A GB1497680A (en) 1974-10-29 1975-10-22 Digital data storage apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46818/74A GB1497677A (en) 1974-10-29 1974-10-29 Contents addressable memory systems

Publications (1)

Publication Number Publication Date
GB1497677A true GB1497677A (en) 1978-01-12

Family

ID=10442705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46818/74A Expired GB1497677A (en) 1974-10-29 1974-10-29 Contents addressable memory systems

Country Status (1)

Country Link
GB (1) GB1497677A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525803A (en) * 1982-08-12 1985-06-25 L'universite De Bordeaux 1 Method for controlling the comparison to be effected between reference logical entities and logical entities issuing from a file

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525803A (en) * 1982-08-12 1985-06-25 L'universite De Bordeaux 1 Method for controlling the comparison to be effected between reference logical entities and logical entities issuing from a file

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940722