Global Patent Index - EP 1002445 A1

EP 1002445 A1 2000-05-24 - SOUND RADIATING DEVICES/SYSTEMS

Title (en)

SOUND RADIATING DEVICES/SYSTEMS

Title (de)

VORRICHTUNG / SYSTEM ZUR SCHALLABSTRAHLUNG

Title (fr)

DISPOSITIFS/SYSTEMES EMETTANT DES SONS

Publication

EP 1002445 A1 (EN)

Application

EP 98936555 A

Priority

  • GB 9802288 W
  • GB 9716412 A

Abstract (en)

[origin: WO9908479A1] Sound radiator has an areally distributed array of plural acoustic transducers having individual drive means. A large number of transducers can be used and can be of any type. Drive signals produce phase-different sound radiations from the transducers in distributions over the area of the array having desired diffuse or particularly voiced nature. Drive signal producing means involves phase-shifting higher acoustic frequency content, and is further operative for in-phase action of at least some of the transducers in sub-area(s) of the array for lower frequency content.

IPC 1-7 (main, further and additional classification)

H04R 1/40; H04R 3/12

IPC 8 full level (invention and additional information)

H04R 17/00 (2006.01); H04R 1/00 (2006.01); H04R 1/40 (2006.01); H04R 3/12 (2006.01); H04R 9/06 (2006.01); H04R 19/00 (2006.01)

CPC (invention and additional information)

H04R 3/12 (2013.01); H04R 1/403 (2013.01); H04R 1/005 (2013.01); H04R 17/00 (2013.01); H04R 19/00 (2013.01); H04R 2430/20 (2013.01)

Citation (search report)

See references of WO 9908479A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IE IT LI NL PT SE

EPO simple patent family

WO 9908479 A1 19990218; AR 013281 A1 20001213; AU 741154 B2 20011122; AU 8551998 A 19990301; BG 104072 A 20000831; BR 9811836 A 20000815; CA 2295724 A1 19990218; CN 1266604 A 20000913; EA 002176 B1 20020228; EP 1002445 A1 20000524; GB 9716412 D0 19971008; HU 0101998 A2 20010928; ID 24975 A 20000831; IL 133985 D0 20010430; JP 2001513619 A 20010904; MX PA00001277 A 20040405; NO 20000588 A 20000204; NO 20000588 D0 20000204; NZ 501959 A 20001124; PL 338378 A1 20001023; SK 1632000 A3 20000912; TR 200000351 T2 20000522; TW 392415 B 20000601; YU 5400 A 20020318; ZA 9806927 B 19990208

INPADOC legal status


2007-03-09 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Ref Legal Event Code: WD

- Ref Document Number: 1024816

- Country of Ref Document: HK

2004-08-11 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030203

2000-05-24 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000215

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB IE IT LI NL PT SE

2000-05-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: RO PAYMENT 20000215;SI PAYMENT 20000215