IT1170672B - Apparecchio di decodificazione per sistemi di registrazionne e riproduzione magnetica - Google Patents

Apparecchio di decodificazione per sistemi di registrazionne e riproduzione magnetica

Info

Publication number
IT1170672B
IT1170672B IT47676/81A IT4767681A IT1170672B IT 1170672 B IT1170672 B IT 1170672B IT 47676/81 A IT47676/81 A IT 47676/81A IT 4767681 A IT4767681 A IT 4767681A IT 1170672 B IT1170672 B IT 1170672B
Authority
IT
Italy
Prior art keywords
magnetic recording
decoding apparatus
reproduction systems
reproduction
systems
Prior art date
Application number
IT47676/81A
Other languages
English (en)
Other versions
IT8147676A0 (it
Inventor
Maurice G Lemoine
Leonard A Pasdera
Original Assignee
Ampex
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22375328&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IT1170672(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ampex filed Critical Ampex
Publication of IT8147676A0 publication Critical patent/IT8147676A0/it
Application granted granted Critical
Publication of IT1170672B publication Critical patent/IT1170672B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
IT47676/81A 1980-02-01 1981-01-30 Apparecchio di decodificazione per sistemi di registrazionne e riproduzione magnetica IT1170672B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/117,881 US4356518A (en) 1980-02-01 1980-02-01 High frequency digital PCM decoding apparatus

Publications (2)

Publication Number Publication Date
IT8147676A0 IT8147676A0 (it) 1981-01-30
IT1170672B true IT1170672B (it) 1987-06-03

Family

ID=22375328

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47676/81A IT1170672B (it) 1980-02-01 1981-01-30 Apparecchio di decodificazione per sistemi di registrazionne e riproduzione magnetica

Country Status (8)

Country Link
US (1) US4356518A (it)
JP (1) JPS56156912A (it)
CA (1) CA1181154A (it)
DE (1) DE3102944A1 (it)
FR (1) FR2475320A1 (it)
GB (2) GB2068692B (it)
IT (1) IT1170672B (it)
NL (1) NL8100456A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586091A (en) * 1984-05-03 1986-04-29 Kalhas Oracle, Inc. System and method for high density data recording
US5088077A (en) * 1988-11-10 1992-02-11 Ampex Corporation Synchronization of record media transports and tracking adjustment
JPH0434768A (ja) * 1990-05-31 1992-02-05 Sony Corp クロツク抽出回路
US5193164A (en) * 1990-10-22 1993-03-09 Eastman Kodak Company Data deskewing apparatus utilizing bank switched random access memories
US6720003B2 (en) * 2001-02-16 2004-04-13 Andrx Corporation Serotonin reuptake inhibitor formulations
EP1860808A1 (en) * 2006-05-25 2007-11-28 STMicroelectronics (Research & Development) Limited Frame synchronization and clock recovery using preamble data that violates a bi-phase mark coding rule
EP2329493A1 (en) * 2008-08-29 2011-06-08 Nxp B.V. Signal processing arrangement and method with adaptable signal reproduction rate

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1462540C3 (de) * 1964-10-31 1974-03-28 Fujitsu Ltd., Kawasaki, Kanagawa (Japan) Schaltungsanordnung zur Erzeugung von Gleichlaufsignalen in einem selbstsynchronisierenden Übertragungssystem
US3623075A (en) * 1969-10-16 1971-11-23 Motorola Inc Asynchronous data decoder
US3747079A (en) * 1971-06-01 1973-07-17 Ibm Reducing dead-tracking in recording systems
GB1368068A (en) * 1971-10-20 1974-09-25 Post Office Digital communication systems
JPS4891964A (it) * 1972-03-08 1973-11-29
DE2216259A1 (de) * 1972-04-05 1973-10-18 Licentia Gmbh Schaltungsanordnung zum ableiten der traegerfrequenz aus den empfangenen signalen in einem vierphasen-demodulator
DE2223125A1 (de) * 1972-05-12 1973-11-22 Bosch Gmbh Robert Verfahren zum erkennen des jeweiligen binaerwertes binaer codierter informationen
JPS4913323A (it) * 1972-05-22 1974-02-05
JPS4929614A (it) * 1972-07-10 1974-03-16
US3810234A (en) * 1972-08-21 1974-05-07 Memorex Corp Data recovery circuit
US4037257A (en) * 1976-02-02 1977-07-19 Xerox Corporation Data clock separator with missing clock detect
US4027335A (en) * 1976-03-19 1977-05-31 Ampex Corporation DC free encoding for data transmission system
US4180701A (en) * 1977-01-28 1979-12-25 Ampex Corporation Phase lock loop for data decoder clock generator
US4109236A (en) * 1977-06-17 1978-08-22 Honeywell Information Systems Inc. Apparatus for digital data recovery from mass storage devices
DE2823343B1 (de) * 1978-05-29 1979-08-16 Siemens Ag Verfahren und Anordnung zur Taktsignalrueckgewinnung bei digitaler Signaluebertragung

Also Published As

Publication number Publication date
GB2139048A (en) 1984-10-31
NL8100456A (nl) 1981-09-01
DE3102944A1 (de) 1982-01-07
FR2475320A1 (fr) 1981-08-07
GB2139048B (en) 1985-04-03
JPS56156912A (en) 1981-12-03
GB8400745D0 (en) 1984-02-15
US4356518A (en) 1982-10-26
CA1181154A (en) 1985-01-15
GB2068692B (en) 1985-02-13
GB2068692A (en) 1981-08-12
IT8147676A0 (it) 1981-01-30
FR2475320B1 (it) 1984-12-21

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19940129