FR1357930A - Device for controlling the selection circuit of a memory - Google Patents

Device for controlling the selection circuit of a memory

Info

Publication number
FR1357930A
FR1357930A FR934906A FR934906A FR1357930A FR 1357930 A FR1357930 A FR 1357930A FR 934906 A FR934906 A FR 934906A FR 934906 A FR934906 A FR 934906A FR 1357930 A FR1357930 A FR 1357930A
Authority
FR
France
Prior art keywords
lines
address
modulo
sum
selecting
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
FR934906A
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1357930A publication Critical patent/FR1357930A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0763—Error or fault detection not based on redundancy by bit configuration check, e.g. of formats or tags
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • G06F11/1012—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error
    • G06F11/104—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error using arithmetic codes, i.e. codes which are preserved during operation, e.g. modulo 9 or 11 check
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/02—Detection or location of defective auxiliary circuits, e.g. defective refresh counters
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
    • G11C29/02—Detection or location of defective auxiliary circuits, e.g. defective refresh counters
    • G11C29/024—Detection or location of defective auxiliary circuits, e.g. defective refresh counters in decoders
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C8/00—Arrangements for selecting an address in a digital store
    • G11C8/10—Decoders

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Error Detection And Correction (AREA)
  • Complex Calculations (AREA)

Abstract

977,134. Error detecting arrangements for matrix stores. MULLARD Ltd. Feb. 11,1963 [May 18, 1962], No. 19287/62. Heading G4C. Error in address-selecting in a matrix store is detected by storing at each word position a set of bits representing the modulo-N sum of the address-selector switch positions, where N is the largest number of positions of any switch. As shown a 12 bit address entered into an address register energizes one out of eight output lines of each of two X and two Y selectors, thus selecting one out of 64 X lines and one out of 64 Y lines. In addition to the data planes, three check planes are provided for storing the modu-8 sum of the four addressing numbers (0-7) and this stored check number is read out on lines S for comparison with the computer modulo-8 sum derived from the address register. A modulo-8 adder built up from half and full adders is illustrated schematically in Fig. 2 (not shown).
FR934906A 1962-05-18 1963-05-15 Device for controlling the selection circuit of a memory Expired FR1357930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1928762A GB977134A (en) 1962-05-18 1962-05-18 Improvements in or relating to information storage systems

Publications (1)

Publication Number Publication Date
FR1357930A true FR1357930A (en) 1964-04-10

Family

ID=10126893

Family Applications (1)

Application Number Title Priority Date Filing Date
FR934906A Expired FR1357930A (en) 1962-05-18 1963-05-15 Device for controlling the selection circuit of a memory

Country Status (4)

Country Link
DE (1) DE1199324B (en)
FR (1) FR1357930A (en)
GB (1) GB977134A (en)
NL (1) NL292619A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460093A (en) * 1965-03-31 1969-08-05 Bell Telephone Labor Inc Selector matrix check circuit
JPS601639A (en) * 1983-06-18 1985-01-07 Sony Corp Signal reproducer

Also Published As

Publication number Publication date
NL292619A (en)
DE1199324B (en) 1965-08-26
GB977134A (en) 1964-12-02

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