CA938727A - Method and means for encoding and decoding digital data - Google Patents

Method and means for encoding and decoding digital data

Info

Publication number
CA938727A
CA938727A CA069413A CA69413A CA938727A CA 938727 A CA938727 A CA 938727A CA 069413 A CA069413 A CA 069413A CA 69413 A CA69413 A CA 69413A CA 938727 A CA938727 A CA 938727A
Authority
CA
Canada
Prior art keywords
encoding
digital data
decoding digital
decoding
data
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
CA069413A
Other languages
English (en)
Inventor
E. Hamilton Robert
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.)
VIATRON COMPUTER SYSTEMS CORP
Original Assignee
VIATRON COMPUTER SYSTEMS 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 VIATRON COMPUTER SYSTEMS CORP filed Critical VIATRON COMPUTER SYSTEMS CORP
Application granted granted Critical
Publication of CA938727A publication Critical patent/CA938727A/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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1612—Error detection by comparing the output signals of redundant hardware where the redundant component is persistent storage
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
CA069413A 1969-01-10 1969-12-09 Method and means for encoding and decoding digital data Expired CA938727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79029669A 1969-01-10 1969-01-10

Publications (1)

Publication Number Publication Date
CA938727A true CA938727A (en) 1973-12-18

Family

ID=25150253

Family Applications (1)

Application Number Title Priority Date Filing Date
CA069413A Expired CA938727A (en) 1969-01-10 1969-12-09 Method and means for encoding and decoding digital data

Country Status (8)

Country Link
US (1) US3562726A (xx)
JP (1) JPS5026923B1 (xx)
BE (1) BE744253A (xx)
CA (1) CA938727A (xx)
DE (1) DE2000899A1 (xx)
FR (1) FR2028112A1 (xx)
GB (1) GB1302711A (xx)
NL (1) NL7000260A (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685021A (en) * 1970-07-16 1972-08-15 Intern Computer Products Inc Method and apparatus for processing data
US3683334A (en) * 1970-11-19 1972-08-08 Ncr Co Digital recorder
JPS5019250B1 (xx) * 1970-12-30 1975-07-05
US4129888A (en) * 1973-07-02 1978-12-12 General Instrument Corporation Data recording and/or reproducing system
US3883891A (en) * 1974-08-22 1975-05-13 Rca Corp Redundant signal processing error reduction technique
US4390975A (en) * 1978-03-20 1983-06-28 Nl Sperry-Sun, Inc. Data transmission in a drill string
JPH0170576U (xx) * 1987-10-30 1989-05-11
US6963064B2 (en) * 2002-06-14 2005-11-08 Pem Management, Inc. Multi-resolution reflective optical incremental encoder
DK2449335T3 (da) 2009-06-30 2014-06-16 Durban Ab System til nødåbning af en dør eller et vindue
JP6657131B2 (ja) 2017-02-17 2020-03-04 日信工業株式会社 車両用ブレーキ液圧制御装置

Also Published As

Publication number Publication date
NL7000260A (xx) 1970-07-14
JPS5026923B1 (xx) 1975-09-04
GB1302711A (xx) 1973-01-10
DE2000899A1 (de) 1970-09-03
US3562726A (en) 1971-02-09
BE744253A (fr) 1970-06-15
FR2028112A1 (xx) 1970-10-09

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