NL7405505A - - Google Patents

Info

Publication number
NL7405505A
NL7405505A NL7405505A NL7405505A NL7405505A NL 7405505 A NL7405505 A NL 7405505A NL 7405505 A NL7405505 A NL 7405505A NL 7405505 A NL7405505 A NL 7405505A NL 7405505 A NL7405505 A NL 7405505A
Authority
NL
Netherlands
Application number
NL7405505A
Other versions
NL161960C (nl
NL161960B (nl
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
Publication of NL7405505A publication Critical patent/NL7405505A/xx
Publication of NL161960B publication Critical patent/NL161960B/xx
Application granted granted Critical
Publication of NL161960C publication Critical patent/NL161960C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
NL7405505.A 1973-04-25 1974-04-24 Vierkanalig stereofonisch weergeefstelsel. NL161960C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48048027A JPS49134302A (cs) 1973-04-25 1973-04-25

Publications (3)

Publication Number Publication Date
NL7405505A true NL7405505A (cs) 1974-10-29
NL161960B NL161960B (nl) 1979-10-15
NL161960C NL161960C (nl) 1980-03-17

Family

ID=12791812

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7405505.A NL161960C (nl) 1973-04-25 1974-04-24 Vierkanalig stereofonisch weergeefstelsel.

Country Status (6)

Country Link
US (1) US3931482A (cs)
JP (1) JPS49134302A (cs)
AU (1) AU473492B2 (cs)
CA (1) CA1014069A (cs)
FR (1) FR2227703B1 (cs)
NL (1) NL161960C (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152550A (en) * 1976-10-21 1979-05-01 Victor Company Of Japan, Ltd. Apparatus for reproducing a multichannel record disc
FR2400287A1 (fr) * 1977-08-09 1979-03-09 Simeau Bernard Reducteur de bruit pour signaux stereophoniques
EP1522209B1 (en) 2002-07-10 2009-12-09 Nxp B.V. A stereo signal processing apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564434A (en) * 1968-07-29 1971-02-16 Signetics Corp Integrated frequency selective circuit and demodulator including phase locked loop
CA938560A (en) * 1969-11-28 1973-12-18 Victor Company Of Japan System for recording and/or reproducing four channel signals on a record disc
JPS4939007B1 (cs) * 1971-06-12 1974-10-22
JPS5630760B2 (cs) * 1972-01-20 1981-07-16
US3825697A (en) * 1973-07-27 1974-07-23 Gen Motors Corp Phase-lock-loop fm-stereo decoder including stereophonic/monophonic blend system for reducing audio distortion

Also Published As

Publication number Publication date
AU473492B2 (en) 1976-06-24
FR2227703B1 (cs) 1978-06-02
DE2419805A1 (de) 1974-11-21
JPS49134302A (cs) 1974-12-24
CA1014069A (en) 1977-07-19
NL161960C (nl) 1980-03-17
NL161960B (nl) 1979-10-15
AU6820974A (en) 1975-10-23
DE2419805B2 (de) 1976-05-26
FR2227703A1 (cs) 1974-11-22
US3931482A (en) 1976-01-06

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: MATSUSH ELECT