(19)
(11) EP 0 876 725 A1

(12)

(43) Date of publication:
11.11.1998 Bulletin 1998/46

(21) Application number: 97903777.0

(22) Date of filing: 10.01.1997
(51) International Patent Classification (IPC): 
H04L 27/ 26( . )
(86) International application number:
PCT/US1997/000397
(87) International publication number:
WO 1997/026745 (24.07.1997 Gazette 1997/32)
(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 RO SI

(30) Priority: 16.01.1996 US P 9843
23.12.1996 US A

(71) Applicant: Transcendata, Inc.
Boulder, CO 80304 (US)

(72) Inventor:
  • GANTER, William, A.
    Boulder, CO 80304 (US)

(74) Representative: Pilch, Adam John Michael, et al 
D. YOUNG & CO., 21 New Fetter Lane
London EC4A 1DA
London EC4A 1DA (GB)

   


(54) MULTI-LEVEL, MULTI-FREQUENCY INTERFERENCE PATTERN ANALOG WAVEFORM ENCODING OF DIGITAL DATA FOR TRANSMISSION