NL7406328A - - Google Patents
Info
- Publication number
- NL7406328A NL7406328A NL7406328A NL7406328A NL7406328A NL 7406328 A NL7406328 A NL 7406328A NL 7406328 A NL7406328 A NL 7406328A NL 7406328 A NL7406328 A NL 7406328A NL 7406328 A NL7406328 A NL 7406328A
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Stereophonic System (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP48052076A JPS5247884B2 (https=) | 1973-05-10 | 1973-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7406328A true NL7406328A (https=) | 1974-11-12 |
Family
ID=12904714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7406328A NL7406328A (https=) | 1973-05-10 | 1974-05-10 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5247884B2 (https=) |
| CA (1) | CA1006826A (https=) |
| DE (1) | DE2422423C2 (https=) |
| FR (1) | FR2229181B1 (https=) |
| GB (1) | GB1473531A (https=) |
| NL (1) | NL7406328A (https=) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938112U (https=) * | 1972-07-04 | 1974-04-04 | ||
| JPS5437223Y2 (https=) * | 1974-12-18 | 1979-11-08 | ||
| JPS52161015U (https=) * | 1976-05-29 | 1977-12-07 | ||
| JPS53128210A (en) * | 1977-04-15 | 1978-11-09 | Nippon Gakki Seizo Kk | Display unit for receiving frequency |
| JPS557607A (en) * | 1978-06-30 | 1980-01-19 | Yaesu Musen Co Ltd | Digital display system by measuring sum or difference between two frequencies |
| JPS55164278U (https=) * | 1979-05-11 | 1980-11-26 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3906156A (en) * | 1971-10-06 | 1975-09-16 | Duane H Cooper | Signal matrixing for directional reproduction of sound |
-
1973
- 1973-05-10 JP JP48052076A patent/JPS5247884B2/ja not_active Expired
-
1974
- 1974-05-07 CA CA199,126A patent/CA1006826A/en not_active Expired
- 1974-05-07 GB GB2005174A patent/GB1473531A/en not_active Expired
- 1974-05-09 DE DE19742422423 patent/DE2422423C2/de not_active Expired
- 1974-05-09 FR FR7415992A patent/FR2229181B1/fr not_active Expired
- 1974-05-10 NL NL7406328A patent/NL7406328A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2422423C2 (de) | 1986-03-06 |
| JPS5247884B2 (https=) | 1977-12-06 |
| CA1006826A (en) | 1977-03-15 |
| JPS5019404A (https=) | 1975-02-28 |
| DE2422423A1 (de) | 1974-11-28 |
| GB1473531A (en) | 1977-05-11 |
| FR2229181B1 (https=) | 1982-03-26 |
| FR2229181A1 (https=) | 1974-12-06 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BA | A request for search or an international-type search has been filed | ||
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| CNR | Transfer of rights (patent application after its laying openfor public ins pection) |
Free format text: NATIONAL RESEARCH DEVELOPMENT CORPORATION |
|
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed |