Global Patent Index - EP 1371133 A2

EP 1371133 A2 20031217 - METHOD FOR SOUND CHANNEL UPGRADING

Title (en)

METHOD FOR SOUND CHANNEL UPGRADING

Title (de)

VERFAHREN ZUM VERBESSERN EINES TONKANALS

Title (fr)

PROCEDE DE MISE A NIVEAU DES CANAUX SON

Publication

EP 1371133 A2 20031217 (EN)

Application

EP 01983730 A 20011114

Priority

  • IB 0102201 W 20011114
  • RU 2000129797 A 20001122

Abstract (en)

[origin: WO0243339A2] The invention concerns a technique of the signal transmission and can be used in the electric signal transmission in a sound channel. The aim of the invention is radical upgrading of the quality and authenticity of the electric signal transmission through a sound channel. The method ensures the non-distorted and authentic electric signal transmission through electronic devices of a sound channel by circuits having open-ended input, and the signal transmission with the frequency more than Ohz is realised by forming a signal of the dc negative feedback in electronic devices independent on the asymmetry of electric signals.

IPC 1-7

H03F 1/30; H03F 3/45

IPC 8 full level

H04L 25/06 (2006.01)

CPC (source: EP)

H04L 25/063 (2013.01)

Citation (search report)

See references of WO 0243339A2

Citation (examination)

US 4626677 A 19861202 - BROWNE EDWARD M [US]

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 0243339 A2 20020530; WO 0243339 A3 20031016; AU 1515102 A 20020603; CN 1537357 A 20041013; EP 1371133 A2 20031217

DOCDB simple family (application)

IB 0102201 W 20011114; AU 1515102 A 20011114; CN 01818991 A 20011114; EP 01983730 A 20011114