CA1122702A - Enregistrement analogique sur un support magnetique - Google Patents

Enregistrement analogique sur un support magnetique

Info

Publication number
CA1122702A
CA1122702A CA318,678A CA318678A CA1122702A CA 1122702 A CA1122702 A CA 1122702A CA 318678 A CA318678 A CA 318678A CA 1122702 A CA1122702 A CA 1122702A
Authority
CA
Canada
Prior art keywords
audio signals
varying
predetermined
amplitude
record
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.)
Expired
Application number
CA318,678A
Other languages
English (en)
Inventor
Kenneth J. Gundry
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.)
Dolby Laboratories Licensing Corp
Original Assignee
Dolby Laboratories Licensing 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 Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Application granted granted Critical
Publication of CA1122702A publication Critical patent/CA1122702A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • 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
    • G11B5/027—Analogue recording
    • G11B5/03—Biasing

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
CA318,678A 1977-12-27 1978-12-27 Enregistrement analogique sur un support magnetique Expired CA1122702A (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US86454177A 1977-12-27 1977-12-27
US864,541 1977-12-27
US96868478A 1978-12-12 1978-12-12
US968,684 1978-12-12

Publications (1)

Publication Number Publication Date
CA1122702A true CA1122702A (fr) 1982-04-27

Family

ID=27127845

Family Applications (1)

Application Number Title Priority Date Filing Date
CA318,678A Expired CA1122702A (fr) 1977-12-27 1978-12-27 Enregistrement analogique sur un support magnetique

Country Status (9)

Country Link
JP (1) JPS54106215A (fr)
AT (1) AT370901B (fr)
CA (1) CA1122702A (fr)
DE (1) DE2855259A1 (fr)
DK (1) DK583278A (fr)
FR (1) FR2413741A1 (fr)
GB (1) GB2013958B (fr)
NL (1) NL7812490A (fr)
SE (1) SE7813317L (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4263624A (en) * 1978-12-12 1981-04-21 Dolby Laboratories Licensing Corporation Analog recording on magnetic media
US4314289A (en) * 1979-12-07 1982-02-02 International Business Machines Corporation Biased pulsed recording systems and methods
EP0046410B1 (fr) * 1980-08-20 1984-10-31 Bang & Olufsen A/S Méthode et appareil de contrôle de polarisation dans l'enregistrement magnétique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2628287A (en) * 1951-02-16 1953-02-10 Nathan M Haynes Magnetic recording apparatus
DE1064732B (de) * 1957-10-22 1959-09-03 Loewe Opta Ag Schaltungsanordnung zur Aufzeichnung von Tonschwingungen mit freqeunzabhaengiger Hochfrequenz-Vormagnetisierung auf bandfoermige Magnetogrammtraeger
DE1099199B (de) * 1958-03-25 1961-02-09 Loewe Opta Ag Schaltungsanordnung zur Steuerung der Amplitude einer hochfrequenten Vormagnetisierung fuer Magnetbandaufzeichnung
US3665345A (en) * 1969-07-21 1972-05-23 Dolby Laboratories Inc Compressors and expanders for noise reduction systems
JPS5319923B1 (fr) * 1970-12-19 1978-06-23
US4011585A (en) * 1974-07-12 1977-03-08 Pioneer Electronic Corporation Magnetic recording reproducing system
JPS5230440U (fr) * 1975-08-22 1977-03-03

Also Published As

Publication number Publication date
GB2013958B (en) 1982-05-06
ATA930178A (de) 1982-09-15
AT370901B (de) 1983-05-10
JPS54106215A (en) 1979-08-21
GB2013958A (en) 1979-08-15
DK583278A (da) 1979-06-28
DE2855259A1 (de) 1979-07-05
NL7812490A (nl) 1979-06-29
SE7813317L (sv) 1979-06-28
FR2413741A1 (fr) 1979-07-27

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Legal Events

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