GB1384151A - Abstracting systems - Google Patents

Abstracting systems

Info

Publication number
GB1384151A
GB1384151A GB2516472A GB2516472A GB1384151A GB 1384151 A GB1384151 A GB 1384151A GB 2516472 A GB2516472 A GB 2516472A GB 2516472 A GB2516472 A GB 2516472A GB 1384151 A GB1384151 A GB 1384151A
Authority
GB
United Kingdom
Prior art keywords
record
track
card
recorded
group
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
GB2516472A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1384151A publication Critical patent/GB1384151A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F16/901—Indexing; Data structures therefor; Storage structures
    • G06F16/9014—Indexing; Data structures therefor; Storage structures hash tables
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • Data Mining & Analysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
GB2516472A 1971-06-28 1972-05-30 Abstracting systems Expired GB1384151A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15756571A 1971-06-28 1971-06-28

Publications (1)

Publication Number Publication Date
GB1384151A true GB1384151A (en) 1975-02-19

Family

ID=22564297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2516472A Expired GB1384151A (en) 1971-06-28 1972-05-30 Abstracting systems

Country Status (3)

Country Link
DE (1) DE2230742A1 (enExample)
FR (1) FR2144261A5 (enExample)
GB (1) GB1384151A (enExample)

Also Published As

Publication number Publication date
DE2230742A1 (de) 1973-01-18
FR2144261A5 (enExample) 1973-02-09

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Legal Events

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