(19)
(11) EP 1 606 884 A2

(12)

(88) Date of publication A3:
25.11.2004

(43) Date of publication:
21.12.2005 Bulletin 2005/51

(21) Application number: 04757922.2

(22) Date of filing: 19.03.2004
(51) International Patent Classification (IPC)7H03M 3/00, H03G 11/00
(86) International application number:
PCT/US2004/008534
(87) International publication number:
WO 2004/086616 (07.10.2004 Gazette 2004/41)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 21.03.2003 US 456414 P
12.05.2003 US 469770 P

(71) Applicant: D2Audio Corporation
Austin, TX 78731 (US)

(72) Inventors:
  • ANDERSEN, Jack, B.
    Austin, TX 78729 (US)
  • HAND, Larry, E.
    Meridian, MS 39301 (US)
  • TAYLOR, Wilson, E.
    Austin, TX 78739 (US)

(74) Representative: Maggs, Michael Norman et al
Kilburn & Strode 20 Red Lion Street
London WC1R 4PJ
London WC1R 4PJ (GB)

   


(54) CLIP DETECTION IN PWM AMPLIFIER