(19)
(11) EP 1 042 865 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
19.01.2005 Bulletin 2005/03

(45) Mention of the grant of the patent:
13.10.2004 Bulletin 2004/42

(21) Application number: 98910630.7

(22) Date of filing: 01.04.1998
(51) International Patent Classification (IPC)7: H03F 3/217, H03F 1/32
(86) International application number:
PCT/DK1998/000133
(87) International publication number:
WO 1998/044626 (08.10.1998 Gazette 1998/40)

(54)

PULSE REFERENCED CONTROL METHOD FOR ENHANCED POWER AMPLIFICATION OF A PULSE MODULATED SIGNAL

PULZREFERIERTES STEUERVERFAHREN FÜR VERBESSERTE LEISTUNGSVERSTÄRKUNG EINES PULSMODULIERTEN SIGNALS

PROCEDE DE COMMANDE REFERENCE PAR IMPULSION ET DESTINE A UNE AMPLIFICATION DE PUISSANCE ACCRUE D'UN SIGNAL MODULE PAR IMPULSION

(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI NL PT SE

(30) Priority: 02.04.1997 DK 37597

(43) Date of publication of application:
11.10.2000 Bulletin 2000/41

(73) Proprietor: Bang & Olufsen Icepower A/S
2800 Lyngby (DK)

(72) Inventor:
  • Nielsen, Karsten
    3000 Helsingor (DK)

(74) Representative: Lindberg, Klas Valter Bo et al
Awapatent AB P.O. Box 11394
404 28 Göteborg
404 28 Göteborg (SE)


(56) References cited: : 
US-A- 4 140 980
 US-A- 5 617 058
   
  • J. AUDIO ENGINEERING SOCIETY, Volume 44, August 1996, N. ANDERSKOUV et al., "High-Fidelity PWM Switching Amplifiers Based on Novel Double-Loop Feedbak Technique", page 649.
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).