SE7703666L - FOR BATH STEREO AND MONO ADAPTED ROUND RADIO SYSTEM - Google Patents
FOR BATH STEREO AND MONO ADAPTED ROUND RADIO SYSTEMInfo
- 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
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.
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)
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)
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 |
-
1977
- 1977-03-29 GB GB13174/77A patent/GB1565405A/en not_active Expired
- 1977-03-29 CA CA274,979A patent/CA1095992A/en not_active Expired
- 1977-03-29 IL IL51777A patent/IL51777A/en unknown
- 1977-03-30 SE SE7703666A patent/SE426639B/en not_active IP Right Cessation
- 1977-03-31 NO NO771139A patent/NO156470C/en unknown
- 1977-04-05 AR AR267125A patent/AR215622A1/en active
- 1977-04-05 ES ES457535A patent/ES457535A1/en not_active Expired
- 1977-04-06 BR BR7702238A patent/BR7702238A/en unknown
- 1977-04-06 IT IT48860/77A patent/IT1078165B/en active
- 1977-04-06 MX MX168677A patent/MX144185A/en unknown
- 1977-04-07 PT PT66413A patent/PT66413B/en unknown
- 1977-04-07 JP JP52039085A patent/JPS6034299B2/en not_active Expired
- 1977-04-07 ZA ZA00772160A patent/ZA772160B/en unknown
- 1977-04-07 DE DE2715741A patent/DE2715741C2/en not_active Expired
- 1977-04-07 FR FR7710631A patent/FR2353182A1/en active Granted
- 1977-04-07 NL NLAANVRAGE7703912,A patent/NL178831C/en not_active IP Right Cessation
-
1981
- 1981-01-15 HK HK12/81A patent/HK1281A/en unknown
- 1981-12-30 MY MY295/81A patent/MY8100295A/en unknown
-
1983
- 1983-03-07 JP JP58036072A patent/JPS58184842A/en active Granted
- 1983-03-07 JP JP58036071A patent/JPS58184841A/en active Granted
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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