CH561488A5 - - Google Patents

Info

Publication number
CH561488A5
CH561488A5 CH441973A CH441973A CH561488A5 CH 561488 A5 CH561488 A5 CH 561488A5 CH 441973 A CH441973 A CH 441973A CH 441973 A CH441973 A CH 441973A CH 561488 A5 CH561488 A5 CH 561488A5
Authority
CH
Switzerland
Application number
CH441973A
Original Assignee
Philips Nv
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
Priority claimed from NL7204290A external-priority patent/NL7204290A/xx
Priority claimed from NL7301752A external-priority patent/NL7301752A/xx
Application filed by Philips Nv filed Critical Philips Nv
Publication of CH561488A5 publication Critical patent/CH561488A5/xx

Links

Classifications

    • 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
    • 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
    • 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)
  • Networks Using Active Elements (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Television Signal Processing For Recording (AREA)
  • Dc Digital Transmission (AREA)
CH441973A 1972-03-30 1973-03-27 CH561488A5 (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7204290A NL7204290A (sv) 1972-03-30 1972-03-30
NL7301752A NL7301752A (sv) 1973-02-08 1973-02-08

Publications (1)

Publication Number Publication Date
CH561488A5 true CH561488A5 (sv) 1975-04-30

Family

ID=26644756

Family Applications (1)

Application Number Title Priority Date Filing Date
CH441973A CH561488A5 (sv) 1972-03-30 1973-03-27

Country Status (12)

Country Link
JP (1) JPS5649008B2 (sv)
AR (1) AR195708A1 (sv)
AT (1) AT346906B (sv)
BE (1) BE797480A (sv)
CA (1) CA975439A (sv)
CH (1) CH561488A5 (sv)
DE (1) DE2312086C3 (sv)
ES (1) ES413099A1 (sv)
FR (1) FR2178108B1 (sv)
GB (1) GB1431481A (sv)
IT (1) IT980703B (sv)
SE (1) SE388988B (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909733A (en) * 1973-05-17 1975-09-30 Dolby Laboratories Inc Dynamic range modifying circuits utilizing variable negative resistance
NL7413514A (nl) * 1974-10-15 1976-04-21 Philips Nv Inrichting voor het naar keuze realiseren van twee onderling komplementaire funkties.
JPS55156431A (en) * 1979-05-24 1980-12-05 Sony Corp Noise reduction system
JPS5762779A (en) * 1980-09-29 1982-04-15 Toshiba Corp Alwave rectifying circuit
LU87145A1 (fr) * 1988-02-26 1989-09-20 Oreal Methode pour ameliorer l'aspect esthetique de la peau a l'aide de melanges polyvitaminiques
JPH0483548A (ja) * 1990-07-24 1992-03-17 Masaya Koyama 泡立機及び泡立容器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730576A (en) * 1951-09-17 1956-01-10 Bell Telephone Labor Inc Miniaturized transistor amplifier circuit
GB920723A (en) * 1960-07-07 1963-03-13 Ass Elect Ind Amplifier circuit
US3368158A (en) * 1965-05-14 1968-02-06 Bell Telephone Labor Inc Low-level automatic gain control circuitry
US3444474A (en) * 1965-12-10 1969-05-13 Bell Telephone Labor Inc Active equalizer circuit
JPS576341B2 (sv) * 1972-08-23 1982-02-04

Also Published As

Publication number Publication date
DE2312086C3 (de) 1979-10-31
ATA270873A (de) 1978-04-15
AT346906B (de) 1978-12-11
CA975439A (en) 1975-09-30
FR2178108B1 (sv) 1976-05-21
JPS4910010A (sv) 1974-01-29
DE2312086A1 (de) 1973-10-31
ES413099A1 (es) 1976-01-16
FR2178108A1 (sv) 1973-11-09
GB1431481A (en) 1976-04-07
IT980703B (it) 1974-10-10
SE388988B (sv) 1976-10-18
JPS5649008B2 (sv) 1981-11-19
DE2312086B2 (de) 1979-03-22
AR195708A1 (es) 1973-10-31
BE797480A (fr) 1973-09-28

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Legal Events

Date Code Title Description
PL Patent ceased