JPS49116902A - - Google Patents
Info
- Publication number
- JPS49116902A JPS49116902A JP48047189A JP4718973A JPS49116902A JP S49116902 A JPS49116902 A JP S49116902A JP 48047189 A JP48047189 A JP 48047189A JP 4718973 A JP4718973 A JP 4718973A JP S49116902 A JPS49116902 A JP S49116902A
- 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.)
- Pending
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)
- Stereophonic System (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2220280 | 1972-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS49116902A true JPS49116902A (ja) | 1974-11-08 |
Family
ID=5843225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48047189A Pending JPS49116902A (ja) | 1972-04-25 | 1973-04-25 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3904828A (ja) |
| JP (1) | JPS49116902A (ja) |
| AT (1) | AT317297B (ja) |
| CA (1) | CA995305A (ja) |
| CH (1) | CH551908A (ja) |
| DE (1) | DE2220280C2 (ja) |
| FR (1) | FR2182432A5 (ja) |
| GB (1) | GB1367429A (ja) |
| IT (1) | IT998099B (ja) |
| NL (1) | NL7217460A (ja) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3708623A (en) * | 1970-04-29 | 1973-01-02 | Quadracast Syst Inc | Compatible four channel fm system |
| JPS5033724B1 (ja) * | 1970-11-09 | 1975-11-01 | ||
| US3679832A (en) * | 1971-03-23 | 1972-07-25 | Bell Telephone Labor Inc | Three-channel fm stereo transmission |
| US3787629A (en) * | 1972-05-09 | 1974-01-22 | Rca Corp | Apparatus for distinguishing between various fm broadcast multiplex transmissions |
-
1972
- 1972-04-25 DE DE2220280A patent/DE2220280C2/de not_active Expired
- 1972-12-11 AT AT1052572A patent/AT317297B/de not_active IP Right Cessation
- 1972-12-13 FR FR7244327A patent/FR2182432A5/fr not_active Expired
- 1972-12-21 NL NL7217460A patent/NL7217460A/xx unknown
-
1973
- 1973-01-23 GB GB336773A patent/GB1367429A/en not_active Expired
- 1973-03-23 US US344182A patent/US3904828A/en not_active Expired - Lifetime
- 1973-04-05 CA CA168,035A patent/CA995305A/en not_active Expired
- 1973-04-19 IT IT23157/73A patent/IT998099B/it active
- 1973-04-19 CH CH569573A patent/CH551908A/xx not_active IP Right Cessation
- 1973-04-25 JP JP48047189A patent/JPS49116902A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA995305A (en) | 1976-08-17 |
| IT998099B (it) | 1976-01-20 |
| FR2182432A5 (ja) | 1973-12-07 |
| US3904828A (en) | 1975-09-09 |
| CH551908A (de) | 1974-07-31 |
| AT317297B (de) | 1974-08-26 |
| GB1367429A (en) | 1974-09-18 |
| NL7217460A (ja) | 1973-10-29 |
| DE2220280C2 (de) | 1974-03-07 |
| DE2220280B1 (de) | 1973-08-09 |