JPH0334727A - Impuls noise eliminator in fm receiver - Google Patents

Impuls noise eliminator in fm receiver

Info

Publication number
JPH0334727A
JPH0334727A JP16856689A JP16856689A JPH0334727A JP H0334727 A JPH0334727 A JP H0334727A JP 16856689 A JP16856689 A JP 16856689A JP 16856689 A JP16856689 A JP 16856689A JP H0334727 A JPH0334727 A JP H0334727A
Authority
JP
Japan
Prior art keywords
noise
circuit
output
fed
noise detection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16856689A
Other languages
Japanese (ja)
Other versions
JPH0817333B2 (en
Inventor
Eiji Ueno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP1168566A priority Critical patent/JPH0817333B2/en
Priority claimed from US07/543,305 external-priority patent/US5036543A/en
Publication of JPH0334727A publication Critical patent/JPH0334727A/en
Publication of JPH0817333B2 publication Critical patent/JPH0817333B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To surely detect noise regardless of the level of an antenna input by detecting a noise output from an FM detector output and an FM intermediate frequency signal, and interrupting the supply of an output signal of an FM detector circuit to the following stages wtilizing either one of thore noise output.
CONSTITUTION: A noise component of an FM detected signal passing through an HPF 6 is amplified by a noise amplifier 7 and fed to a noise detection circuit 8. The noise detection output of the noise detection circuit 8 is fed to a waveform shaping circuit 9, in which the noise detection output is converted into a pulse with a prescribed peak value and time width and fed to an OR circuit 13. Moreover, a level detection circuit 14 detecting the level or an intermediate frequency output signal is provided, the level detection output is fed to a noise detection circuit 17 via an HPF 15 for noise detection and a noise amplifier 16. The noise detection output of the noise detection circuit 17 is fed to a waveform shaping circuit 18, where the noise detection output is converted into a pulse with a prescribed peak value and time width and fed to the OR circuit 13. An interrupt control signal obtained from the OR circuit 13 is fed to the gate circuit 3, in which pulse noise is eliminated.
COPYRIGHT: (C)1991,JPO&Japio
JP1168566A 1989-06-30 1989-06-30 Pulse noise elimination device in FM receiver Expired - Fee Related JPH0817333B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1168566A JPH0817333B2 (en) 1989-06-30 1989-06-30 Pulse noise elimination device in FM receiver

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1168566A JPH0817333B2 (en) 1989-06-30 1989-06-30 Pulse noise elimination device in FM receiver
US07/543,305 US5036543A (en) 1989-06-30 1990-06-26 Noise suppression apparatus for FM receiver
EP19900112339 EP0405541A3 (en) 1989-06-30 1990-06-28 Noise suppression apparatus for fm receiver

Publications (2)

Publication Number Publication Date
JPH0334727A true JPH0334727A (en) 1991-02-14
JPH0817333B2 JPH0817333B2 (en) 1996-02-21

Family

ID=15870415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1168566A Expired - Fee Related JPH0817333B2 (en) 1989-06-30 1989-06-30 Pulse noise elimination device in FM receiver

Country Status (1)

Country Link
JP (1) JPH0817333B2 (en)

Also Published As

Publication number Publication date
JPH0817333B2 (en) 1996-02-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees