NL7304448A - - Google Patents
Info
- Publication number
- NL7304448A NL7304448A NL7304448A NL7304448A NL7304448A NL 7304448 A NL7304448 A NL 7304448A NL 7304448 A NL7304448 A NL 7304448A NL 7304448 A NL7304448 A NL 7304448A NL 7304448 A NL7304448 A NL 7304448A
- Authority
- NL
- Netherlands
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24207372A | 1972-04-07 | 1972-04-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL7304448A true NL7304448A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-10-09 |
| NL178381B NL178381B (nl) | 1985-10-01 |
| NL178381C NL178381C (nl) | 1986-03-03 |
Family
ID=22913337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE7304448,A NL178381C (nl) | 1972-04-07 | 1973-03-30 | Decodeerinrichting voor een quadrofonisch signaal. |
Country Status (9)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5343242B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-03-19 | 1978-11-17 | ||
| JPS5822892B2 (ja) * | 1974-02-25 | 1983-05-12 | ソニー株式会社 | 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 |
| JPS5175105U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1974-12-09 | 1976-06-12 | ||
| JPS589615B2 (ja) * | 1974-12-16 | 1983-02-22 | ソニー株式会社 | Ｆｍ ステレオフクチヨウホウシキ |
| FR2310672A1 (fr) * | 1975-05-07 | 1976-12-03 | Emv Elektromechanikai Vallalat | Dispositif pour la realisation d'une transmission tetraphonique compatible au moyen de sources sonores virtuelles |
| US4061882A (en) * | 1976-08-13 | 1977-12-06 | Quadracast Systems, Inc. | Quadrature multiplying four-channel demodulator |
| JPS61179338A (ja) * | 1985-02-01 | 1986-08-12 | 旭化成株式会社 | 布製袋体 |
| CA2054062A1 (en) * | 1990-12-11 | 1992-06-12 | William J. Simpson | Clay liner for steep slopes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3584154A (en) * | 1968-06-17 | 1971-06-08 | Clarence Hunter Mcshan | Stereo multiplex decoding system with a phase locked loop switching signal control |
| NL7018867A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1969-12-29 | 1971-07-01 | ||
| DE2109557A1 (de) * | 1970-02-25 | 1971-09-09 | Quadracast Systems | Vierkanal FM Stereosystem |
| NL7212767A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-09-21 | 1973-03-23 | ||
| NL7402371A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-02-21 | 1974-08-23 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3283079A (en) * | 1964-07-14 | 1966-11-01 | Collins Radio Co | Phase control network for a stereophonic system |
| US3708623A (en) * | 1970-04-29 | 1973-01-02 | Quadracast Syst Inc | Compatible four channel fm system |
| JPS4838001A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-09-15 | 1973-06-05 |
-
1972
- 1972-04-07 US US00242073A patent/US3798377A/en not_active Expired - Lifetime
-
1973
- 1973-03-05 CA CA165,523A patent/CA1014625A/en not_active Expired
- 1973-03-23 GB GB1422173A patent/GB1417884A/en not_active Expired
- 1973-03-30 NL NLAANVRAGE7304448,A patent/NL178381C/xx not_active IP Right Cessation
- 1973-04-03 BE BE129596A patent/BE797716A/xx not_active IP Right Cessation
- 1973-04-03 FR FR7311917A patent/FR2179032B1/fr not_active Expired
- 1973-04-03 IT IT22541/73A patent/IT983642B/it active
- 1973-04-03 JP JP3753473A patent/JPS561820B2/ja not_active Expired
- 1973-04-03 DE DE2317338A patent/DE2317338A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3584154A (en) * | 1968-06-17 | 1971-06-08 | Clarence Hunter Mcshan | Stereo multiplex decoding system with a phase locked loop switching signal control |
| NL7018867A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1969-12-29 | 1971-07-01 | ||
| DE2109557A1 (de) * | 1970-02-25 | 1971-09-09 | Quadracast Systems | Vierkanal FM Stereosystem |
| NL7212767A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-09-21 | 1973-03-23 | ||
| NL7402371A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-02-21 | 1974-08-23 |
Non-Patent Citations (1)
| Title |
|---|
| IEEE TRANSACTIONS ON BROADCAST AND TELEVISION RECEIVERS, vol. BTR-16, no. 4, november 1970, blz. 281 - 288, New York, USA, PADGETT et al.: 'On an inductorless FM stereo multiplex circuit using a phaselocked loop' * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1417884A (en) | 1975-12-17 |
| CA1014625A (en) | 1977-07-26 |
| FR2179032B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-09-08 |
| IT983642B (it) | 1974-11-11 |
| NL178381C (nl) | 1986-03-03 |
| JPS561820B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1981-01-16 |
| FR2179032A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-11-16 |
| NL178381B (nl) | 1985-10-01 |
| JPS4948206A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-05-10 |
| DE2317338A1 (de) | 1973-10-18 |
| BE797716A (fr) | 1973-07-31 |
| US3798377A (en) | 1974-03-19 |
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 | ||
| A85 | Still pending on 85-01-01 | ||
| V1 | Lapsed because of non-payment of the annual fee |