GB1578820A - System for loading computer diagnostic programmes - Google Patents

System for loading computer diagnostic programmes Download PDF

Info

Publication number
GB1578820A
GB1578820A GB21875/77A GB2187577A GB1578820A GB 1578820 A GB1578820 A GB 1578820A GB 21875/77 A GB21875/77 A GB 21875/77A GB 2187577 A GB2187577 A GB 2187577A GB 1578820 A GB1578820 A GB 1578820A
Authority
GB
United Kingdom
Prior art keywords
wave train
pulses
computer program
magnetic tape
wave
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
GB21875/77A
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.)
EMC Corp
Original Assignee
Data General 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 Data General Corp filed Critical Data General Corp
Publication of GB1578820A publication Critical patent/GB1578820A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/319—Tester hardware, i.e. output processing circuits
    • G01R31/31903—Tester hardware, i.e. output processing circuits tester configuration
    • G01R31/31908—Tester set-up, e.g. configuring the tester to the device under test [DUT], down loading test patterns
    • 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
    • G11B20/1415—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 conversion to or from pulse frequency coding

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
GB21875/77A 1976-06-09 1977-05-24 System for loading computer diagnostic programmes Expired GB1578820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/694,442 US4112501A (en) 1976-06-09 1976-06-09 System and method for loading computer diagnostic programs

Publications (1)

Publication Number Publication Date
GB1578820A true GB1578820A (en) 1980-11-12

Family

ID=24788845

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21875/77A Expired GB1578820A (en) 1976-06-09 1977-05-24 System for loading computer diagnostic programmes

Country Status (5)

Country Link
US (1) US4112501A (enExample)
JP (1) JPS52150935A (enExample)
DE (1) DE2723990A1 (enExample)
FR (1) FR2354594A1 (enExample)
GB (1) GB1578820A (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53132245A (en) * 1977-04-25 1978-11-17 Hitachi Ltd Subminiature computer
US4315323A (en) * 1977-05-05 1982-02-09 Data General Corporation Cassette recorder system for loading programs
US4512027A (en) * 1979-02-28 1985-04-16 Sharp Kabushiki Kaisha Electronic calculating device with faculties of detecting reproduction level of data applied thereto
US4420818A (en) * 1981-03-12 1983-12-13 Recortec, Inc. Fast load cassette tape recorder interface
US4468752A (en) * 1981-09-21 1984-08-28 Tandy Corporation Data synchronization apparatus
US4443883A (en) * 1981-09-21 1984-04-17 Tandy Corporation Data synchronization apparatus
JPH0789429B2 (ja) * 1986-02-07 1995-09-27 株式会社日立製作所 データ読込み方法
JPH0827220B2 (ja) * 1988-07-23 1996-03-21 富士重工業株式会社 車輌診断装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2247905A (en) * 1939-07-25 1941-07-01 Ibm Apparatus for preparing statistical records
US2870429A (en) * 1951-03-27 1959-01-20 Gen Precision Lab Inc Automatic program control system
US3077564A (en) * 1961-02-09 1963-02-12 Gen Electric Binary logic circuits utilizing diverse frequency representation for bits
US3543241A (en) * 1967-01-30 1970-11-24 Owens Illinois Inc Binary stripe coding system and apparatus
US3646534A (en) * 1969-05-05 1972-02-29 Wendell S Miller High-density data processing
US3624615A (en) * 1969-11-19 1971-11-30 Honeywell Inc Transaction-recording device
FR2086576A5 (enExample) * 1970-04-02 1971-12-31 Radiotechnique Compelec
DE2145621A1 (de) * 1971-09-13 1973-03-22 Ulrich Dipl Ing Siebe Verfahren zum speichern und wiedergeben von informationseinheiten in bzw. aus einem magnetomotorischen speicher
US3881183A (en) * 1973-10-25 1975-04-29 Rca Corp Read/write circuits for reliable digital recording
US3975622A (en) * 1974-04-26 1976-08-17 Forney Engineering Company Programmable logic controller system
US3996586A (en) * 1974-09-20 1976-12-07 The United States Of America As Represented By The Secretary Of The Navy Magnetic tape pulse width to digital convertor

Also Published As

Publication number Publication date
JPS52150935A (en) 1977-12-15
FR2354594A1 (fr) 1978-01-06
FR2354594B1 (enExample) 1984-05-04
DE2723990A1 (de) 1977-12-22
US4112501A (en) 1978-09-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee