(19)
(11) EP 0 947 101 A1

(12)

(43) Date of publication:
06.10.1999 Bulletin 1999/40

(21) Application number: 97950916.0

(22) Date of filing: 16.12.1997
(51) International Patent Classification (IPC): 
H04N 7/ 30( . )
H03M 7/ 30( . )
H04N 7/ 26( . )
G06T 9/ 00( . )
H04N 1/ 41( . )
(86) International application number:
PCT/US1997/022685
(87) International publication number:
WO 1998/028917 (02.07.1998 Gazette 1998/26)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 20.12.1996 US 19960033706P
14.11.1997 US 19970066637

(71) Applicant: Westford Technology Corporation
Westford, MA 01886 (US)

(72) Inventor:
  • DECEGAMA, AngĂ©l, L.
    Westford, MA 01886 (US)

(74) Representative: Downing, Michael Philip 
Fry Heath & Spence, The Old College, 53 High Street
Horley, Surrey RH6 7BN
Horley, Surrey RH6 7BN (GB)

   


(54) IMPROVED ESTIMATOR FOR RECOVERING HIGH FREQUENCY COMPONENTS FROM COMPRESSED IMAGE DATA