SE7703666L - FOR BATH STEREO AND MONO ADAPTED ROUND RADIO SYSTEM - Google Patents

FOR BATH STEREO AND MONO ADAPTED ROUND RADIO SYSTEM

Info

Publication number
SE7703666L
SE7703666L SE7703666A SE7703666A SE7703666L SE 7703666 L SE7703666 L SE 7703666L SE 7703666 A SE7703666 A SE 7703666A SE 7703666 A SE7703666 A SE 7703666A SE 7703666 L SE7703666 L SE 7703666L
Authority
SE
Sweden
Prior art keywords
stereo
carriers
angle
mono
bath
Prior art date
Application number
SE7703666A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE426639B (en
Inventor
N W Parker
F H Hilbert
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of SE7703666L publication Critical patent/SE7703666L/en
Publication of SE426639B publication Critical patent/SE426639B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • H04H20/49—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for AM stereophonic broadcast systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Selective Calling Equipment (AREA)

Abstract

76819 A COMPATIBLE AM STEREO BROADCAST SYSTEM A compatible AM stereo broadcast system has a pair of carriers in quadrature are separately modulated with stereo information. The resulting signal is multiplied by the cosine of an angle ?, the angle between the vector sum of the two carriers and a line that bisects the angle between the carriers in quadrature. The signal envelope contains the sum of the information on the two channels, thus providing compatible monophonic reception. In a stereo receiver the two carriers in quadrature can be restored by dividing the signal by the cosine of the angle ?. The original modulation can be obtained from each channel by product detection.
SE7703666A 1976-04-07 1977-03-30 PROCEDURES AND TRANSMITTERS FOR PENDING ONE, ONE BERVAG SIGNAL, REPRESENTING A FIRST AND ANOTHER INFORMATION SIGNAL, AND WHICH SEND SIGNAL IS COMPATIBLE WITH BOTH MONOPHONIC AND Stereophonic OPERATION SE426639B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67470376A 1976-04-07 1976-04-07

Publications (2)

Publication Number Publication Date
SE7703666L true SE7703666L (en) 1977-10-08
SE426639B SE426639B (en) 1983-01-31

Family

ID=24707610

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7703666A SE426639B (en) 1976-04-07 1977-03-30 PROCEDURES AND TRANSMITTERS FOR PENDING ONE, ONE BERVAG SIGNAL, REPRESENTING A FIRST AND ANOTHER INFORMATION SIGNAL, AND WHICH SEND SIGNAL IS COMPATIBLE WITH BOTH MONOPHONIC AND Stereophonic OPERATION

Country Status (18)

Country Link
JP (3) JPS6034299B2 (en)
AR (1) AR215622A1 (en)
BR (1) BR7702238A (en)
CA (1) CA1095992A (en)
DE (1) DE2715741C2 (en)
ES (1) ES457535A1 (en)
FR (1) FR2353182A1 (en)
GB (1) GB1565405A (en)
HK (1) HK1281A (en)
IL (1) IL51777A (en)
IT (1) IT1078165B (en)
MX (1) MX144185A (en)
MY (1) MY8100295A (en)
NL (1) NL178831C (en)
NO (1) NO156470C (en)
PT (1) PT66413B (en)
SE (1) SE426639B (en)
ZA (1) ZA772160B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL180062C (en) * 1977-09-27 Motorola Inc RADIO RECEIVER.
US4170716A (en) * 1977-10-14 1979-10-09 Motorola, Inc. AM stereo receiver with correction limiting
JPS5829903B2 (en) * 1977-11-09 1983-06-25 山水電気株式会社 Amplitude modulation stereo receiver
US4172966A (en) * 1978-02-23 1979-10-30 Motorola, Inc. AM stereophonic receiver
US4589127A (en) * 1978-06-05 1986-05-13 Hazeltine Corporation Independent sideband AM multiphonic system
US4220818A (en) * 1979-05-21 1980-09-02 Kahn Leonard R AM Stereo transmitter
JPS6029251Y2 (en) * 1979-11-29 1985-09-04 ソニー株式会社 AM stereo receiver
US4371747A (en) * 1980-03-24 1983-02-01 Motorola, Inc. AM Stereophonic decoder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271952A (en) * 1958-11-14 1961-09-22 Carrier wave teletransmission method and device
US3007005A (en) * 1959-02-12 1961-10-31 Philco Corp Transmitter for stereophonic information signals
FR1250343A (en) * 1959-04-08 1961-01-06 Philco Corp Silent adjustment circuit for stereo signal receivers
US3068475A (en) * 1959-10-07 1962-12-11 Rca Corp Stereophonic sound signalling system
US3067293A (en) * 1959-11-19 1962-12-04 Philco Corp Single channel stereophonic broad-casting system
US3218393A (en) * 1960-02-11 1965-11-16 Leonard R Kahn Compatible stereophonic transmission and reception systems, and methods and components characterizing same
FR1279867A (en) * 1960-02-11 1961-12-22 Method and installation for stereo transmission and reception

Also Published As

Publication number Publication date
ES457535A1 (en) 1978-03-01
DE2715741C2 (en) 1986-09-11
IT1078165B (en) 1985-05-08
JPS58184841A (en) 1983-10-28
ZA772160B (en) 1978-03-29
NO771139L (en) 1977-10-10
IL51777A (en) 1978-12-17
MY8100295A (en) 1981-12-31
NL178831B (en) 1985-12-16
MX144185A (en) 1981-09-09
JPS58184842A (en) 1983-10-28
JPS6034299B2 (en) 1985-08-08
NL178831C (en) 1986-05-16
FR2353182B1 (en) 1984-10-05
IL51777A0 (en) 1977-05-31
SE426639B (en) 1983-01-31
GB1565405A (en) 1980-04-23
NL7703912A (en) 1977-10-11
JPS52141502A (en) 1977-11-25
DE2715741A1 (en) 1977-10-13
PT66413A (en) 1977-05-01
CA1095992A (en) 1981-02-17
NO156470B (en) 1987-06-15
PT66413B (en) 1978-09-15
JPS6256705B2 (en) 1987-11-26
FR2353182A1 (en) 1977-12-23
NO156470C (en) 1987-09-23
AR215622A1 (en) 1979-10-31
HK1281A (en) 1981-01-23
BR7702238A (en) 1978-01-17
JPS6237580B2 (en) 1987-08-13

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