JPS4888902A - - Google Patents

Info

Publication number
JPS4888902A
JPS4888902A JP47018109A JP1810972A JPS4888902A JP S4888902 A JPS4888902 A JP S4888902A JP 47018109 A JP47018109 A JP 47018109A JP 1810972 A JP1810972 A JP 1810972A JP S4888902 A JPS4888902 A JP S4888902A
Authority
JP
Japan
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
JP47018109A
Other languages
Japanese (ja)
Other versions
JPS5535039B2 (en
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 filed Critical
Priority to JP1810972A priority Critical patent/JPS5535039B2/ja
Priority to DK487572AA priority patent/DK137153B/en
Priority to CA153,125A priority patent/CA1002616A/en
Priority to GB4553872A priority patent/GB1410381A/en
Priority to SE7212781A priority patent/SE384431B/en
Priority to DE2248769A priority patent/DE2248769B2/en
Priority to NLAANVRAGE7213487,A priority patent/NL175870C/en
Publication of JPS4888902A publication Critical patent/JPS4888902A/ja
Priority to US05/502,531 priority patent/US3983500A/en
Priority to US05/698,191 priority patent/US4107478A/en
Publication of JPS5535039B2 publication Critical patent/JPS5535039B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/006—Systems employing more than two channels, e.g. quadraphonic in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems
    • 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
    • G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
    • 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
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
    • H03D3/244—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop combined with means for obtaining automatic gain control

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Stereophonic System (AREA)
JP1810972A 1971-10-05 1972-02-23 Expired JPS5535039B2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP1810972A JPS5535039B2 (en) 1972-02-23 1972-02-23
DK487572AA DK137153B (en) 1971-10-05 1972-10-02 Demodulation system for angle-modulated waves.
CA153,125A CA1002616A (en) 1971-10-05 1972-10-03 Angle modulated wave demodulation system
GB4553872A GB1410381A (en) 1971-10-05 1972-10-03 Angle modulated wave demodulation system
SE7212781A SE384431B (en) 1971-10-05 1972-10-04 DEMODULATION SYSTEM FOR ANGLE MODULATED VAGORS
DE2248769A DE2248769B2 (en) 1971-10-05 1972-10-05 Demodulator circuit for angle-modulated electrical oscillations
NLAANVRAGE7213487,A NL175870C (en) 1971-10-05 1972-10-05 DEMODULATION CIRCUIT WITH A PHASE CONTROL CIRCUIT.
US05/502,531 US3983500A (en) 1971-10-05 1974-09-03 Angle modulated wave demodulation system
US05/698,191 US4107478A (en) 1971-10-05 1976-06-21 Angle modulated wave demodulation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1810972A JPS5535039B2 (en) 1972-02-23 1972-02-23

Publications (2)

Publication Number Publication Date
JPS4888902A true JPS4888902A (en) 1973-11-21
JPS5535039B2 JPS5535039B2 (en) 1980-09-11

Family

ID=11962436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1810972A Expired JPS5535039B2 (en) 1971-10-05 1972-02-23

Country Status (1)

Country Link
JP (1) JPS5535039B2 (en)

Also Published As

Publication number Publication date
JPS5535039B2 (en) 1980-09-11

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