GB1327869A - Error detection apparatus - Google Patents

Error detection apparatus

Info

Publication number
GB1327869A
GB1327869A GB3409771A GB3409771A GB1327869A GB 1327869 A GB1327869 A GB 1327869A GB 3409771 A GB3409771 A GB 3409771A GB 3409771 A GB3409771 A GB 3409771A GB 1327869 A GB1327869 A GB 1327869A
Authority
GB
United Kingdom
Prior art keywords
signals
threshold
analogue
digital
amplitude
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
GB3409771A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1327869A publication Critical patent/GB1327869A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/08—Amplitude regulation arrangements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Digital Magnetic Recording (AREA)
GB3409771A 1970-09-28 1971-07-21 Error detection apparatus Expired GB1327869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7614470A 1970-09-28 1970-09-28

Publications (1)

Publication Number Publication Date
GB1327869A true GB1327869A (en) 1973-08-22

Family

ID=22130188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3409771A Expired GB1327869A (en) 1970-09-28 1971-07-21 Error detection apparatus

Country Status (10)

Country Link
US (1) US3725885A (enExample)
AU (1) AU445497B2 (enExample)
BE (1) BE773025A (enExample)
CA (1) CA945671A (enExample)
CH (1) CH531753A (enExample)
DE (1) DE2147359C3 (enExample)
ES (1) ES395344A1 (enExample)
FR (1) FR2105824A5 (enExample)
GB (1) GB1327869A (enExample)
SE (1) SE379598B (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2298238C2 (ru) * 2004-11-25 2007-04-27 Георгий Николаевич Розоринов Устройство для контроля качества магнитных носителей
CN108694100A (zh) * 2017-04-06 2018-10-23 株式会社村田制作所 数据变换装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4202016A (en) * 1978-01-30 1980-05-06 Sampey Harry R Digital magnetic data storage and retrieval using audio analog recording techniques
FR2472304A1 (fr) * 1979-12-19 1981-06-26 Cii Honeywell Bull Procede pour commander le gain des circuits amplifiant les signaux delivres par une tete de lecture associee a un support d'informations et dispositif pour le mettre en oeuvre
JPS59165212A (ja) * 1983-03-08 1984-09-18 Sony Corp 情報信号再生装置
US5287227A (en) * 1989-11-08 1994-02-15 Seagate Technology, Inc. Track dependent variable level qualification pulse detector
US5150050A (en) * 1990-07-30 1992-09-22 Seagate Technology, Inc. Adaptive variable threshold qualification level circuit for signal processing in disk drives

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483542A (en) * 1962-09-13 1969-12-09 Litton Business Systems Inc Variable threshold playback amplifier
US3395355A (en) * 1964-04-16 1968-07-30 Potter Instrument Co Inc Variable time discriminator for double frequency encoded information
US3430215A (en) * 1964-07-13 1969-02-25 Burroughs Corp Automatic gain level stepping system
US3500385A (en) * 1967-07-17 1970-03-10 Ibm Coded data storage and retrieval system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2298238C2 (ru) * 2004-11-25 2007-04-27 Георгий Николаевич Розоринов Устройство для контроля качества магнитных носителей
CN108694100A (zh) * 2017-04-06 2018-10-23 株式会社村田制作所 数据变换装置
CN108694100B (zh) * 2017-04-06 2022-06-24 株式会社村田制作所 数据变换装置

Also Published As

Publication number Publication date
FR2105824A5 (enExample) 1972-04-28
BE773025A (fr) 1972-01-17
DE2147359C3 (de) 1975-09-18
CH531753A (de) 1972-12-15
ES395344A1 (es) 1973-12-01
DE2147359A1 (de) 1972-04-06
CA945671A (en) 1974-04-16
AU3379471A (en) 1973-03-29
US3725885A (en) 1973-04-03
AU445497B2 (en) 1974-02-21
SE379598B (enExample) 1975-10-13
DE2147359B2 (de) 1975-02-13

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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