FR2235447B1 - - Google Patents

Info

Publication number
FR2235447B1
FR2235447B1 FR7422790A FR7422790A FR2235447B1 FR 2235447 B1 FR2235447 B1 FR 2235447B1 FR 7422790 A FR7422790 A FR 7422790A FR 7422790 A FR7422790 A FR 7422790A FR 2235447 B1 FR2235447 B1 FR 2235447B1
Authority
FR
France
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
FR7422790A
Other versions
FR2235447A1 (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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of FR2235447A1 publication Critical patent/FR2235447A1/fr
Application granted granted Critical
Publication of FR2235447B1 publication Critical patent/FR2235447B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
    • 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
    • G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
FR7422790A 1973-06-28 1974-06-28 Expired FR2235447B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973076795U JPS5024112U (fr) 1973-06-28 1973-06-28

Publications (2)

Publication Number Publication Date
FR2235447A1 FR2235447A1 (fr) 1975-01-24
FR2235447B1 true FR2235447B1 (fr) 1979-10-05

Family

ID=13615557

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7422790A Expired FR2235447B1 (fr) 1973-06-28 1974-06-28

Country Status (8)

Country Link
US (1) US3977023A (fr)
JP (1) JPS5024112U (fr)
CA (1) CA1001956A (fr)
DE (1) DE2431188A1 (fr)
FR (1) FR2235447B1 (fr)
GB (1) GB1462719A (fr)
IT (1) IT1015567B (fr)
NL (1) NL7408630A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4319089A (en) * 1978-11-03 1982-03-09 Quasar Microsystems, Inc. Telephone answering machine
JPH05266589A (ja) * 1992-03-23 1993-10-15 Sony Corp デイジタル信号再生回路

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379959A (en) * 1965-04-30 1968-04-23 Sangamo Electric Co Automatic attenuator device

Also Published As

Publication number Publication date
CA1001956A (en) 1976-12-21
US3977023A (en) 1976-08-24
IT1015567B (it) 1977-05-20
JPS5024112U (fr) 1975-03-18
GB1462719A (en) 1977-01-26
FR2235447A1 (fr) 1975-01-24
DE2431188A1 (de) 1975-01-16
NL7408630A (fr) 1974-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse