GB1344179A - Error detection systems for use with a moving magnetic storage device - Google Patents

Error detection systems for use with a moving magnetic storage device

Info

Publication number
GB1344179A
GB1344179A GB3661571A GB3661571A GB1344179A GB 1344179 A GB1344179 A GB 1344179A GB 3661571 A GB3661571 A GB 3661571A GB 3661571 A GB3661571 A GB 3661571A GB 1344179 A GB1344179 A GB 1344179A
Authority
GB
United Kingdom
Prior art keywords
latch
threshold
signal
gate
read
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
GB3661571A
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 GB1344179A publication Critical patent/GB1344179A/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)
  • Digital Magnetic Recording (AREA)
GB3661571A 1970-09-28 1971-08-04 Error detection systems for use with a moving magnetic storage device Expired GB1344179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7614370A 1970-09-28 1970-09-28

Publications (1)

Publication Number Publication Date
GB1344179A true GB1344179A (en) 1974-01-16

Family

ID=22130181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3661571A Expired GB1344179A (en) 1970-09-28 1971-08-04 Error detection systems for use with a moving magnetic storage device

Country Status (9)

Country Link
US (1) US3670304A (enExample)
AU (1) AU446967B2 (enExample)
BE (1) BE773184R (enExample)
CA (1) CA944067A (enExample)
CH (1) CH538157A (enExample)
ES (1) ES395345A1 (enExample)
FR (1) FR2102378B2 (enExample)
GB (1) GB1344179A (enExample)
SE (1) SE372396B (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786358A (en) * 1972-12-27 1974-01-15 Ibm Method and apparatus for detecting the beginning of data block
IT1041378B (it) * 1975-06-10 1980-01-10 Cselt Centro Studi Lab Telecom Dispositivo per il rilevamento della qualita di trasmissione nei ricevitori di segnali numerici
US4044329A (en) * 1976-07-02 1977-08-23 Honeywell Information Systems, Inc. Variable cyclic redundancy character detector
JPS5715207A (en) * 1980-07-03 1982-01-26 Victor Co Of Japan Ltd Frequency-characteristic correction device of rotary information recording medium reproducing device
US5414722A (en) * 1992-07-14 1995-05-09 Wangtek, Inc. Selective data synchronizer
US7139325B1 (en) * 2001-12-07 2006-11-21 Applied Micro Circuits Corporation System and method for five-level non-causal channel equalization
US7024599B2 (en) * 2001-12-07 2006-04-04 Applied Micro Circuits Corporation System and method for non-causal channel equalization
US7054387B2 (en) * 2001-12-07 2006-05-30 Applied Micro Circuits Corporation Feed-forward/feedback system and method for non-causal channel equalization
US7042961B2 (en) * 2002-07-12 2006-05-09 Applied Micro Circuits Corporation Full rate error detection circuit for use with external circuitry
TWI267827B (en) * 2003-08-28 2006-12-01 Mediatek Inc Detector for detecting information carried by a signal having a sawtooth-like shape

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3214700A (en) * 1961-03-17 1965-10-26 Trw Inc Variable threshold signal detection system
US3430197A (en) * 1965-10-21 1969-02-25 Itt Error correction circuit for digital recording systems
US3534273A (en) * 1967-12-18 1970-10-13 Bell Telephone Labor Inc Automatic threshold level selection and eye tracking in digital transmission systems

Also Published As

Publication number Publication date
DE2147791A1 (de) 1972-04-06
AU446967B2 (en) 1974-04-04
CA944067A (en) 1974-03-19
FR2102378A2 (enExample) 1972-04-07
DE2147791B2 (de) 1975-05-22
CH538157A (de) 1973-06-15
US3670304A (en) 1972-06-13
ES395345A1 (es) 1973-12-01
FR2102378B2 (enExample) 1973-06-29
AU3386471A (en) 1973-03-29
BE773184R (fr) 1972-01-17
SE372396B (enExample) 1974-12-16

Similar Documents

Publication Publication Date Title
US3805284A (en) Digital data copy duplication method and apparatus utilizing bit to bit data verification
US3720927A (en) Speed insensitive reading and writing apparatus for digital information
GB1334710A (en) Magnetic recording and reading
US3623041A (en) Method and apparatus for encoding and decoding digital data
GB1454081A (en) Digital data magnetic tape recording apparatus
US3774154A (en) Error control circuits and methods
GB1344179A (en) Error detection systems for use with a moving magnetic storage device
GB1513634A (en) Data recovery system
US4470082A (en) Digital clocking and detection system for a digital storage system
US3524164A (en) Detection and error checking system for binary data
US3827078A (en) Digital data retrieval system with dynamic window skew
US5105316A (en) Qualification for pulse detecting in a magnetic media data storage system
GB1365973A (en) Character bit error detection and correction
US3331079A (en) Apparatus for inhibiting non-significant pulse signals
US3725885A (en) Method and apparatus for amplitude sensing and data gating in a magnetic-storage device with digital interface
US4858035A (en) Digital signal reproducing system
US4603357A (en) Magnetic recording detection pointer that measures the time per data cell during which the analog waveform exceeds a predetermined detection threshold
US3643228A (en) High-density storage and retrieval system
US3755798A (en) Data recovery system having tracking sampling window
US3656149A (en) Three frequency data separator
US3727143A (en) Integrating level sensing circuit
US3559178A (en) Pulse discrimination circuitry
US3832684A (en) Apparatus for detecting data bits and error bits in phase encoded data
US4008488A (en) Magnetic recording data decoding system
GB1390074A (en) Detection and correction of phase encoded data

Legal Events

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