NL292619A - - Google Patents

Info

Publication number
NL292619A
NL292619A NL292619DA NL292619A NL 292619 A NL292619 A NL 292619A NL 292619D A NL292619D A NL 292619DA NL 292619 A NL292619 A NL 292619A
Authority
NL
Netherlands
Prior art keywords
lines
address
modulo
sum
selecting
Prior art date
Application number
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.)
Publication of NL292619A publication Critical patent/NL292619A/xx

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

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).
NL292619D 1962-05-18 NL292619A (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
NL292619A true NL292619A (en)

Family

ID=10126893

Family Applications (1)

Application Number Title Priority Date Filing Date
NL292619D NL292619A (en) 1962-05-18

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
DE1199324B (en) 1965-08-26
GB977134A (en) 1964-12-02
FR1357930A (en) 1964-04-10

Similar Documents

Publication Publication Date Title
GB1508735A (en) Digital reference matrix apparatus for word verification
GB931126A (en) Improvements in digital data storage systems
GB1098329A (en) Data processing device
GB939054A (en) Data processing system
GB1360930A (en) Memory and addressing system therefor
GB1063014A (en) Improvements in or relating to electronic digital computers
JPS4812650B1 (en)
GB1449229A (en) Data processing system and method therefor
GB1508736A (en) Apparatus for hyphenation of words
GB1117905A (en) Data storage systems
GB1389500A (en) Parity error recovery in computers
US3982231A (en) Prefixing in a multiprocessing system
GB1148856A (en) Data comparing systems
GB1351590A (en) Digital data storage addressing system
US3141964A (en) Calculating memory
GB1188666A (en) Associative Memories
GB1477381A (en) Digital data-processing systems
NL292619A (en)
JPS5657140A (en) Address designation system of desk calculator
US3292158A (en) Data processing apparatus including means for processing word and character formatted data
GB1046357A (en) Word "selecting system" for data storage arrangement
GB1207166A (en) Extended memory addressing
GB1197418A (en) Data Storage Apparatus
GB1434188A (en) Data processing systems
GB1224961A (en) Binary associative memory