국제 및 국내 특허문헌 검색

1. (WO1991010325) PROCESS FOR TRANSMITTING DIGITAL DATA, IN PARTICULAR SOUND DATA, IN A TV CHANNEL

Pub. No.:    WO/1991/010325    International Application No.:    PCT/EP1990/002153
Publication Date: Fri Jul 12 01:59:59 CEST 1991 International Filing Date: Wed Dec 12 00:59:59 CET 1990
IPC: H04N 7/06
H04N 7/081
Applicants: TELEFUNKEN FERNSEH UND RUNDFUNK GMBH
DINSEL, Siegfried
Inventors: DINSEL, Siegfried
Title: PROCESS FOR TRANSMITTING DIGITAL DATA, IN PARTICULAR SOUND DATA, IN A TV CHANNEL
Abstract:
In order to transmit digital data, in particular sound data, in a TV channel above the picture signal, it is proposed that the digital information is inserted as a channel-coded signal on at least one existing, frequency-modulated RF sound carrier above the TV sound channel in the base band. This lowers the modulation amplitude of the channel-coded signal with respect to the modulation amplitude of the sound signal to an extent such that interference in the receiver is excluded.