FR2468969B1 - - Google Patents

Info

Publication number
FR2468969B1
FR2468969B1 FR8022913A FR8022913A FR2468969B1 FR 2468969 B1 FR2468969 B1 FR 2468969B1 FR 8022913 A FR8022913 A FR 8022913A FR 8022913 A FR8022913 A FR 8022913A FR 2468969 B1 FR2468969 B1 FR 2468969B1
Authority
FR
France
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
FR8022913A
Other languages
French (fr)
Other versions
FR2468969A1 (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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Publication of FR2468969A1 publication Critical patent/FR2468969A1/fr
Application granted granted Critical
Publication of FR2468969B1 publication Critical patent/FR2468969B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1816—Testing
    • G11B20/182—Testing using test patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
FR8022913A 1979-10-31 1980-10-27 Circuit de commande d'essai pour des appareils a canaux multiples tels que des enregistreurs a bande, et analogues Granted FR2468969A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/090,050 US4333177A (en) 1979-10-31 1979-10-31 Test control circuit for multichannel apparatus such as tape recorders and the like

Publications (2)

Publication Number Publication Date
FR2468969A1 FR2468969A1 (fr) 1981-05-08
FR2468969B1 true FR2468969B1 (OSRAM) 1984-01-06

Family

ID=22221032

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8022913A Granted FR2468969A1 (fr) 1979-10-31 1980-10-27 Circuit de commande d'essai pour des appareils a canaux multiples tels que des enregistreurs a bande, et analogues

Country Status (8)

Country Link
US (1) US4333177A (OSRAM)
JP (1) JPS5673352A (OSRAM)
BE (1) BE885936A (OSRAM)
CA (1) CA1149935A (OSRAM)
DE (1) DE3041172C2 (OSRAM)
FR (1) FR2468969A1 (OSRAM)
GB (1) GB2063492B (OSRAM)
NL (1) NL8005968A (OSRAM)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001568A (en) * 1982-01-12 1991-03-19 Discovision Associates Signal evaluation by accumulation at one rate and releasing and testing at a slower rate
US4682246A (en) * 1982-01-12 1987-07-21 Discovision Associates Characterizing the information transfer characteristics of a recording medium
US4641207A (en) * 1983-03-22 1987-02-03 Green George D Diagnostic device and method for examining the operation of a disk drive
US4612586A (en) * 1984-06-05 1986-09-16 Memorex Corporation Method for measuring timing asymmetry in a magnetic storage system
JPS6125230A (ja) * 1984-07-13 1986-02-04 Sony Corp Ｉｃ装置
US4578719A (en) * 1984-12-06 1986-03-25 Robert Bosch Gmbh Tracking error recognition in reproduced digital signals
US4725968A (en) * 1985-05-14 1988-02-16 Nicolet Instrument Corporation Disk drive testing method and apparatus
JPH0827320B2 (ja) * 1987-01-21 1996-03-21 松下電器産業株式会社 信号発生制御装置
US4922184A (en) * 1988-08-29 1990-05-01 Control Data Corporation Apparatus and process for the simultaneous continuity sensing of multiple circuits
DE19739380A1 (de) * 1997-09-09 1999-03-11 Abb Research Ltd Verfahren zum Test eines Leitsystems
JP3744709B2 (ja) * 1999-02-05 2006-02-15 ローム株式会社 磁気記録再生装置及びそのドライブ用半導体集積回路装置
US7134068B2 (en) * 2003-12-04 2006-11-07 Seagate Technology Llc Channel processing data without leading sync mark
CN107356859B (zh) * 2017-06-09 2021-12-10 上海航空电器有限公司 多路音频电路bit测试电路及方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE633599A (OSRAM) * 1962-06-20
US3522532A (en) * 1965-10-21 1970-08-04 Mc Donnell Douglas Corp Comparison system for testing points in a circuit using a multi-channel analog signal record and playback means
US3519761A (en) * 1968-03-07 1970-07-07 Ampex Record excitation optimization method and apparatus for rotary head magnetic tape recorders
US3686682A (en) * 1970-08-17 1972-08-22 Burroughs Corp Method and apparatus for testing magnetic disc files
JPS5115415B1 (OSRAM) * 1970-12-28 1976-05-17
US3831149A (en) * 1973-02-14 1974-08-20 Burroughs Corp Data monitoring apparatus including a plurality of presettable control elements for monitoring preselected signal combinations and other conditions
US4103338A (en) * 1977-02-28 1978-07-25 Xerox Corporation Self-diagnostic method and apparatus for disk drive
US4180203A (en) * 1977-09-30 1979-12-25 Westinghouse Electric Corp. Programmable test point selector circuit
US4142215A (en) * 1977-12-02 1979-02-27 The Telex Corporation Tape drive tester

Also Published As

Publication number Publication date
CA1149935A (en) 1983-07-12
FR2468969A1 (fr) 1981-05-08
GB2063492B (en) 1983-11-16
DE3041172A1 (de) 1981-09-03
BE885936A (fr) 1981-02-16
DE3041172C2 (de) 1982-11-25
US4333177A (en) 1982-06-01
JPH0419508B2 (OSRAM) 1992-03-30
NL8005968A (nl) 1981-06-01
GB2063492A (en) 1981-06-03
JPS5673352A (en) 1981-06-18

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Legal Events

Date Code Title Description
ST Notification of lapse