IT1033197B - Decodificatore per segnali stereo fonici compositi di sistemi a modulazione di frequenza a quattro canali - Google Patents

Decodificatore per segnali stereo fonici compositi di sistemi a modulazione di frequenza a quattro canali

Info

Publication number
IT1033197B
IT1033197B IT20664/75A IT2066475A IT1033197B IT 1033197 B IT1033197 B IT 1033197B IT 20664/75 A IT20664/75 A IT 20664/75A IT 2066475 A IT2066475 A IT 2066475A IT 1033197 B IT1033197 B IT 1033197B
Authority
IT
Italy
Prior art keywords
decoder
frequency modulation
channel frequency
modulation systems
phonic signals
Prior art date
Application number
IT20664/75A
Other languages
English (en)
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
Application granted granted Critical
Publication of IT1033197B publication Critical patent/IT1033197B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
IT20664/75A 1974-02-25 1975-02-25 Decodificatore per segnali stereo fonici compositi di sistemi a modulazione di frequenza a quattro canali IT1033197B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49022145A JPS5822892B2 (ja) 1974-02-25 1974-02-25 ４ チヤンネルステレオゴウセイシンゴウノ ハンベツカイロ

Publications (1)

Publication Number Publication Date
IT1033197B true IT1033197B (it) 1979-07-10

Family

ID=12074688

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20664/75A IT1033197B (it) 1974-02-25 1975-02-25 Decodificatore per segnali stereo fonici compositi di sistemi a modulazione di frequenza a quattro canali

Country Status (8)

Country Link
US (1) US3980832A (it)
JP (1) JPS5822892B2 (it)
CA (1) CA1061421A (it)
DE (1) DE2507574A1 (it)
FR (1) FR2262441B1 (it)
GB (1) GB1487496A (it)
IT (1) IT1033197B (it)
NL (1) NL7502229A (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5228208A (en) * 1975-08-28 1977-03-03 Nippon Gakki Seizo Kk Fm multiplex stereo demodulator circuit
US4061882A (en) * 1976-08-13 1977-12-06 Quadracast Systems, Inc. Quadrature multiplying four-channel demodulator
GB2052218B (en) * 1979-01-09 1983-04-20 Victor Company Of Japan Method and apparatus for frequency multiplying an electrical signal
JPS5854691B2 (ja) * 1979-02-13 1983-12-06 株式会社日立製作所 ステレオ復調方式
JPS6029251Y2 (ja) * 1979-11-29 1985-09-04 ソニー株式会社 Ａｍステレオ受信機
US4564867A (en) * 1980-07-24 1986-01-14 Universal Pioneer Corporation Video disc recording and reproducing device for video discs having recognition signal indicative of content of associated program signal
US4420658A (en) * 1981-05-04 1983-12-13 Hazeltine Corporation Multiple tone signal system
JPS59140739A (ja) * 1983-01-31 1984-08-13 Sony Corp Ａｍステレオ受信機のパイロット信号検出回路
JPS621441U (it) * 1985-06-20 1987-01-07
JPH0419890A (ja) * 1990-05-11 1992-01-23 Sony Corp 無線伝送式の音声信号再生装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6608507A (it) * 1966-06-18 1967-12-19
US3708623A (en) * 1970-04-29 1973-01-02 Quadracast Syst Inc Compatible four channel fm system
US3679832A (en) * 1971-03-23 1972-07-25 Bell Telephone Labor Inc Three-channel fm stereo transmission
US3714595A (en) * 1971-03-25 1973-01-30 Warwick Electronics Inc Demodulator using a phase locked loop
US3798377A (en) * 1972-04-07 1974-03-19 Matsushita Electric Corp Four channel fm decoder utilizing a one-of-four decoder
US3787629A (en) * 1972-05-09 1974-01-22 Rca Corp Apparatus for distinguishing between various fm broadcast multiplex transmissions
JPS5544519B2 (it) * 1972-10-09 1980-11-12
DE2263131A1 (de) * 1972-12-22 1973-07-12 Matsushita Electric Ind Co Ltd Vierkanalstereoempfaenger
FR2164920B1 (it) * 1972-12-22 1978-02-10 Matsushita Electric Ind Co Ltd
JPS5573825A (en) * 1978-11-24 1980-06-03 Nisshin Steel Co Ltd Production of hot-dipped steel plate for ultra-deep drawing

Also Published As

Publication number Publication date
US3980832A (en) 1976-09-14
GB1487496A (en) 1977-09-28
FR2262441B1 (it) 1979-01-05
NL7502229A (nl) 1975-08-27
FR2262441A1 (it) 1975-09-19
JPS50116104A (it) 1975-09-11
CA1061421A (en) 1979-08-28
DE2507574A1 (de) 1975-08-28
JPS5822892B2 (ja) 1983-05-12
DE2507574C2 (it) 1988-01-07

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