FR2506053A1 - Circuit d'appareil de lecture de disques destine a la reproduction d'information pre-enregistree sous la forme de creux - Google Patents

Circuit d'appareil de lecture de disques destine a la reproduction d'information pre-enregistree sous la forme de creux

Info

Publication number
FR2506053A1
FR2506053A1 FR8208224A FR8208224A FR2506053A1 FR 2506053 A1 FR2506053 A1 FR 2506053A1 FR 8208224 A FR8208224 A FR 8208224A FR 8208224 A FR8208224 A FR 8208224A FR 2506053 A1 FR2506053 A1 FR 2506053A1
Authority
FR
France
Prior art keywords
circuit
signal
recorded information
playing device
device circuit
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.)
Pending
Application number
FR8208224A
Other languages
English (en)
French (fr)
Inventor
Isao Masuda
Kazunori Nishikawa
Yoshiki Iwasaki
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Publication of FR2506053A1 publication Critical patent/FR2506053A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K12/00—Producing pulses by distorting or combining sinusoidal waveforms
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold
    • H03K5/086—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold generated by feedback

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Digital Magnetic Recording (AREA)
  • Manipulation Of Pulses (AREA)
FR8208224A 1981-05-12 1982-05-12 Circuit d'appareil de lecture de disques destine a la reproduction d'information pre-enregistree sous la forme de creux Pending FR2506053A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56070948A JPS57186216A (en) 1981-05-12 1981-05-12 Information recording medium reproducer

Publications (1)

Publication Number Publication Date
FR2506053A1 true FR2506053A1 (fr) 1982-11-19

Family

ID=13446228

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8208224A Pending FR2506053A1 (fr) 1981-05-12 1982-05-12 Circuit d'appareil de lecture de disques destine a la reproduction d'information pre-enregistree sous la forme de creux

Country Status (5)

Country Link
JP (1) JPS57186216A (de)
KR (1) KR840000017A (de)
DE (1) DE3217482A1 (de)
FR (1) FR2506053A1 (de)
GB (1) GB2098379A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60123766U (ja) * 1984-01-31 1985-08-21 パイオニア株式会社 記録情報再生装置におけるドロツプアウト検出回路
JPS613372A (ja) * 1984-06-15 1986-01-09 Fujitsu Ltd 復調回路
JPH04212723A (ja) * 1990-07-31 1992-08-04 Toshiba Corp 情報記録再生装置
DE69231740T2 (de) * 1991-05-10 2001-09-20 Discovision Associates Irvine System und Verfahren zur optischen Speicherung und Wiedergewinnung von Daten
US5537379A (en) 1991-05-10 1996-07-16 Discovision Associates Optical data storage and retrieval system and method
US5790495A (en) 1994-05-06 1998-08-04 Discovision Associates Data generator assembly for retrieving stored data by comparing threshold signal with preprocessed signal having DC component
US5894468A (en) * 1994-05-06 1999-04-13 Discovision Associates Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626209A (en) * 1970-04-06 1971-12-07 Electro Optical Ind Inc Square wave generating circuit
US3909728A (en) * 1973-02-16 1975-09-30 Contraves Ag Apparatus for generating a synchronization voltage for the ignition pulse control of controlled rectifier-power stages
FR2393393A1 (fr) * 1976-11-30 1978-12-29 Sony Corp Support d'enregistrement rotatif, methode et dispositif de reproduction optique de l'information enregistree
US4263555A (en) * 1979-06-15 1981-04-21 Rca Corporation Signal detection system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626209A (en) * 1970-04-06 1971-12-07 Electro Optical Ind Inc Square wave generating circuit
US3909728A (en) * 1973-02-16 1975-09-30 Contraves Ag Apparatus for generating a synchronization voltage for the ignition pulse control of controlled rectifier-power stages
FR2393393A1 (fr) * 1976-11-30 1978-12-29 Sony Corp Support d'enregistrement rotatif, methode et dispositif de reproduction optique de l'information enregistree
US4263555A (en) * 1979-06-15 1981-04-21 Rca Corporation Signal detection system

Also Published As

Publication number Publication date
DE3217482A1 (de) 1982-11-25
GB2098379A (en) 1982-11-17
JPS57186216A (en) 1982-11-16
KR840000017A (ko) 1984-01-30

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