FR2304125A1 - Appareil de lecture de donnees - Google Patents

Appareil de lecture de donnees

Info

Publication number
FR2304125A1
FR2304125A1 FR7606929A FR7606929A FR2304125A1 FR 2304125 A1 FR2304125 A1 FR 2304125A1 FR 7606929 A FR7606929 A FR 7606929A FR 7606929 A FR7606929 A FR 7606929A FR 2304125 A1 FR2304125 A1 FR 2304125A1
Authority
FR
France
Prior art keywords
reading device
data reading
data
reading
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.)
Granted
Application number
FR7606929A
Other languages
English (en)
Other versions
FR2304125B1 (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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of FR2304125A1 publication Critical patent/FR2304125A1/fr
Application granted granted Critical
Publication of FR2304125B1 publication Critical patent/FR2304125B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
    • 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
    • G11B20/10009—Improvement or modification of read or write signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
FR7606929A 1975-03-12 1976-03-11 Appareil de lecture de donnees Granted FR2304125A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55763275A 1975-03-12 1975-03-12

Publications (2)

Publication Number Publication Date
FR2304125A1 true FR2304125A1 (fr) 1976-10-08
FR2304125B1 FR2304125B1 (fr) 1979-06-01

Family

ID=24226251

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7606929A Granted FR2304125A1 (fr) 1975-03-12 1976-03-11 Appareil de lecture de donnees

Country Status (7)

Country Link
US (1) US4091380A (fr)
JP (1) JPS51113552A (fr)
CA (1) CA1063717A (fr)
CH (1) CH607146A5 (fr)
DE (1) DE2610159A1 (fr)
FR (1) FR2304125A1 (fr)
GB (1) GB1486392A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588115A1 (fr) * 1985-10-01 1987-04-03 Telex Computer Products Appareil d'etalonnage d'un ensemble de lecture de bande magnetique
EP0369472A2 (fr) * 1988-11-17 1990-05-23 Mitsubishi Denki Kabushiki Kaisha Circuit de traitement de signaux
EP0406852A2 (fr) * 1989-07-06 1991-01-09 Hitachi, Ltd. MÀ©thode et appareil pour la commande de gain automatique dans un système à disque optique
EP0514818A1 (fr) * 1991-05-24 1992-11-25 Alcatel N.V. Dispositif amplificateur programmable

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158819A (en) * 1976-12-10 1979-06-19 Geosource Inc. Instantaneous floating point amplifier
US4357577A (en) * 1976-12-10 1982-11-02 Geosource Inc. Instantaneous floating point amplifier
US4222081A (en) * 1977-11-21 1980-09-09 Hitachi, Ltd. Information reading device for a multitrack storage device
JPS6033011B2 (ja) * 1978-05-28 1985-07-31 日本ビクター株式会社 自動音量減衰装置
US4194163A (en) * 1978-08-03 1980-03-18 Texaco Development Corporation Floating point amplifier means and method
US4298898A (en) * 1979-04-19 1981-11-03 Compagnie Internationale Pour L'informatique Cii Honeywell Bull Method of and apparatus for reading data from reference zones of a memory
FR2469043B1 (fr) * 1979-10-31 1986-01-24 Enertec Filtres accordes par commutation et utilisation dans un egalisateur d'enregistrement magnetique
US4399416A (en) * 1980-11-10 1983-08-16 Texaco Development Corporation Floating point amplifier
JPS5925450A (ja) * 1982-07-31 1984-02-09 Sharp Corp インラインデ−タ通信装置
US4833422A (en) * 1987-09-24 1989-05-23 Burr-Brown Corporation Programmable gain instrumentation amplifier
US5283701A (en) * 1991-12-17 1994-02-01 Teac Corporation Automatic recording level control system providing for manual change of the standard level
FR2720569B1 (fr) * 1994-05-31 1996-07-05 Thomson Csf Amplificateur à plusieurs étages à transistors en cascade et à puissance de sortie ajustable.
US5488518A (en) * 1994-08-15 1996-01-30 Vtc Inc. Programmable pre-amplifier using a serial shift register to output a plurality of control signals
JPH09130245A (ja) * 1995-11-06 1997-05-16 Sony Corp ゲイン可変回路
US5838269A (en) * 1996-09-12 1998-11-17 Advanced Micro Devices, Inc. System and method for performing automatic gain control with gain scheduling and adjustment at zero crossings for reducing distortion
US5894283A (en) * 1997-04-03 1999-04-13 Advanced Micro Devices, Inc. Method and apparatus for converting analog signals into pulse signals with simultaneous analog signal compression
KR100303795B1 (ko) * 1998-08-07 2001-09-24 윤종용 송신신호 이득 제어방법
DE10255606A1 (de) * 2002-11-28 2004-06-17 Infineon Technologies Ag Verstärkeranordnung, Empfänger mit der Verstärkeranordnung und Verfahren zum Betrieb eines programmierbaren Verstärkers
JP2015046725A (ja) * 2013-08-27 2015-03-12 株式会社五洋電子 トーンスケルチ回路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251319B (de) * 1965-01-20 1966-12-27 Ibm Oesterreich Internationale Analog-Digital- bzw. Digital-Analog-Wandler
US3331028A (en) * 1965-01-21 1967-07-11 Avco Corp Multistage transistor amplifier in which the impedances of the various stages are successively varied to control gain
US3308392A (en) * 1965-02-04 1967-03-07 Esso Production Company Seismic amplifier having means for changing the amplification of the seismic signal by discrete steps proportional to a given power of two
US3425051A (en) * 1965-03-10 1969-01-28 Us Air Force Analog-to-digital converter
US3464022A (en) * 1967-08-30 1969-08-26 Mandrel Industries Apparatus for controlling the gain of binary gain ranging amplifiers
US3579138A (en) * 1969-08-25 1971-05-18 American Optical Corp Automatic gain presetting circuit
US3662365A (en) * 1970-03-23 1972-05-09 Storage Technology Corp Dynamic amplitude control for magnetic tape systems
FR2110758A5 (fr) * 1970-10-29 1972-06-02 Sercel Rech Const Elect

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588115A1 (fr) * 1985-10-01 1987-04-03 Telex Computer Products Appareil d'etalonnage d'un ensemble de lecture de bande magnetique
EP0369472A2 (fr) * 1988-11-17 1990-05-23 Mitsubishi Denki Kabushiki Kaisha Circuit de traitement de signaux
EP0369472A3 (fr) * 1988-11-17 1991-09-25 Mitsubishi Denki Kabushiki Kaisha Circuit de traitement de signaux
EP0406852A2 (fr) * 1989-07-06 1991-01-09 Hitachi, Ltd. MÀ©thode et appareil pour la commande de gain automatique dans un système à disque optique
EP0406852A3 (en) * 1989-07-06 1993-08-25 Hitachi, Ltd. Automatic gain control method and appartus in optical disk system
EP0514818A1 (fr) * 1991-05-24 1992-11-25 Alcatel N.V. Dispositif amplificateur programmable
FR2676875A1 (fr) * 1991-05-24 1992-11-27 Alcatel Espace Dispositif amplificateur programmable.
US5216384A (en) * 1991-05-24 1993-06-01 Alcatel Espace Programmable amplifier device

Also Published As

Publication number Publication date
DE2610159A1 (de) 1976-09-30
CA1063717A (fr) 1979-10-02
US4091380A (en) 1978-05-23
GB1486392A (en) 1977-09-21
JPS614209B2 (fr) 1986-02-07
FR2304125B1 (fr) 1979-06-01
CH607146A5 (fr) 1978-11-30
JPS51113552A (en) 1976-10-06

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse