EP 0613595 A4 19950118 - DIGITAL DEMODULATOR.
Title (en)
DIGITAL DEMODULATOR.
Title (de)
DIGITALER DEMODULATOR.
Title (fr)
DEMODULATEUR NUMERIQUE.
Publication
Application
Priority
- US 9209857 W 19921117
- US 79415091 A 19911120
- US 87584892 A 19920429
- US 90036792 A 19920618
Abstract (en)
[origin: WO9310596A1] A digital demodulator for frequency modulated, pulse-width modulated and other temporally modulated signals uses a sign detector (14) to determine zero-crossings of the modulated signal. The periods between zero-crossings are determined by at least one gate circuit (16, 18) and at least one counter (22, 24) which counts clock pulses from a high-speed clock (20) gated by the gate circuit in response to zero-crossings. The period information is converted to a demodulated signal by a numerical processor (12), or a signal processor (12') or a digital-to-analog converter (12'').
IPC 1-7
IPC 8 full level
H03M 1/86 (2006.01); H03D 3/00 (2006.01); H03D 3/04 (2006.01); H03K 9/06 (2006.01); H03K 9/08 (2006.01); H04L 27/14 (2006.01)
CPC (source: EP)
H03D 3/04 (2013.01); H03K 9/06 (2013.01); H03K 9/08 (2013.01)
Citation (search report)
- [XA] US 4992748 A 19910212 - GARD MICHAEL F [US]
- [XA] US 3548328 A 19701215 - BREIKSS IVARS P
- [A] EP 0099142 A2 19840125 - PHILIPS PATENTVERWALTUNG [DE], et al
- See references of WO 9310596A1
Designated contracting state (EPC)
DE FR GB IE NL
DOCDB simple family (publication)
WO 9310596 A1 19930527; CA 2124114 A1 19930527; CA 2124114 C 19990330; EP 0613595 A1 19940907; EP 0613595 A4 19950118; JP H08500942 A 19960130; KR 100363288 B1 20030211
DOCDB simple family (application)
US 9209857 W 19921117; CA 2124114 A 19921117; EP 92924443 A 19921117; JP 50944893 A 19921117; KR 19940701703 A 19940520