Global patent index - EP 1068707 A1

EP 1068707 A1 2001-01-17 - SYSTEM, DEVICE AND METHOD FOR IMPROVING A DEFINED PROPERTY OF TRANSFORM-DOMAIN SIGNALS

Title (en)

SYSTEM, DEVICE AND METHOD FOR IMPROVING A DEFINED PROPERTY OF TRANSFORM-DOMAIN SIGNALS

Title (de)

SYSTEM, EINRICHTUNG UND VERFAHREN ZUR VERBESSERUNG EINER BESTIMMTEN EIGENSCHAFT EINES SIGNALS IM TRANSFORMBEREICH

Title (fr)

SYSTEME, DISPOSITIF VISANT A AMELIORER UNE PROPRIETE DEFINIE DE SIGNAUX DU DOMAINE DES TRANSFORMEES

Publication

EP 1068707 A1 (EN)

Application

EP 99916578 A

Priority

  • US 9907841 W
  • US 5867198 A
  • US 7508698 A

Abstract (en)

[origin: WO9953663A1] A system, device and method for improving a defined property of transform-domain systems; the device includes: a signal mapper (23) which maps input data into blocks of symbols in a first domain and which generates offset bits corresponding to each block of symbols; and a perturbation/transform device (27), responsive to the blocks of symbols in the first domain and the corresponding offset bits, which produces blocks of perturbed transform domain symbols in order to improve the defined property of the transformed symbols.

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

H04L 27/04

IPC 8 full level (invention and additional information)

H04L 27/36 (2006.01); H04L 27/26 (2006.01); H04L 27/34 (2006.01)

CPC (invention and additional information)

H04L 27/3411 (2013.01); H04L 27/2614 (2013.01); H04L 27/2615 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT SE

EPO simple patent family

WO 9953663 A1 19991021; AU 3487199 A 19991101; AU 739896 B2 20011025; BR 9909560 A 20020326; CA 2328098 A1 19991021; CN 1296689 A 20010523; EP 1068707 A1 20010117; EP 1068707 A4 20010912; JP 2002511708 A 20020416; MX PA00009895 A 20020424

INPADOC legal status

2004-05-12 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20031101

2001-09-12 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20010726

2001-09-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT SE

2001-09-12 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7H 04L 27/04 A, 7H 04L 27/26 B

2001-01-17 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001110

2001-01-17 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT SE