EP 1133211 A2 20010912 - Information apparatus having speakers
Title (en)
Information apparatus having speakers
Title (de)
Informationsvorrichtung mit Lautsprecher
Title (fr)
Dispositif d'information avec haut-parleur
Publication
Application
Priority
JP 2000060209 A 20000306
Abstract (en)
In an information apparatus having speakers, an inspection signal of the frequency out of the audible frequency band outputted from the microcomputer 23 is inputted into the input terminal 14a of power IC 10a via the input switch circuit 22, a signal to be inspected, which is outputted to the ripple terminal 13a of power IC 10a according to the inspection signal, is extracted by the extracting circuit 20a, and it is judged by an intensity of the output signal outputted from the extracting circuit 20a whether or not speaker FLS is connected to the amplifier 12a. <IMAGE>
IPC 1-7
IPC 8 full level
H04R 3/00 (2006.01); H04R 5/04 (2006.01); H04R 29/00 (2006.01)
CPC (source: EP)
H04R 5/04 (2013.01); H04R 2420/05 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1133211 A2 20010912; EP 1133211 A3 20021204; EP 1133211 B1 20070801; DE 60129623 D1 20070913; DE 60129623 T2 20071206; JP 2001251700 A 20010914; JP 3908434 B2 20070425
DOCDB simple family (application)
EP 01301842 A 20010228; DE 60129623 T 20010228; JP 2000060209 A 20000306