JPS57174957A - Multi-path interference rejecting circuit - Google Patents

Multi-path interference rejecting circuit

Info

Publication number
JPS57174957A
JPS57174957A JP6091881A JP6091881A JPS57174957A JP S57174957 A JPS57174957 A JP S57174957A JP 6091881 A JP6091881 A JP 6091881A JP 6091881 A JP6091881 A JP 6091881A JP S57174957 A JPS57174957 A JP S57174957A
Authority
JP
Japan
Prior art keywords
pilot signal
signal
path interference
circuit
interference
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
JP6091881A
Other languages
Japanese (ja)
Other versions
JPH0347614B2 (en
Inventor
Kanji Tanaka
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP6091881A priority Critical patent/JPS57174957A/en
Publication of JPS57174957A publication Critical patent/JPS57174957A/en
Publication of JPH0347614B2 publication Critical patent/JPH0347614B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
    • H04H40/72—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for noise suppression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To reject pulse noise due to multi-path interference, by detecting the generation of multi-path interference and rejecting a pilot signal during its period. CONSTITUTION:When a reception state is changed, and a reception signal received on an antenna 1 is troubled with multi-path interference, then a pilot signal is subjected to interference, high frequency noise component included in the reception signal is increased and it passes through a band pass filter 12, a signal produced at an output terminal of a level detection circuit 14 is rapidly increased and an output of a differentiation circuit 16. Thus, a control transistor 11 turns on and a series resonance circuit 8 is resonated with a pilot signal frequency. As a result, the pilot signal is attenuated and rejected. Thus, the pilot signal having undesirable amplitude and phase is not applied to a stereo multiplex circuit 7 and the generation of pulsive noise is prevented. Then, a monaural signal is produced at both output terminals 21 and 22.
JP6091881A 1981-04-21 1981-04-21 Multi-path interference rejecting circuit Granted JPS57174957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6091881A JPS57174957A (en) 1981-04-21 1981-04-21 Multi-path interference rejecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6091881A JPS57174957A (en) 1981-04-21 1981-04-21 Multi-path interference rejecting circuit

Publications (2)

Publication Number Publication Date
JPS57174957A true JPS57174957A (en) 1982-10-27
JPH0347614B2 JPH0347614B2 (en) 1991-07-19

Family

ID=13156235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6091881A Granted JPS57174957A (en) 1981-04-21 1981-04-21 Multi-path interference rejecting circuit

Country Status (1)

Country Link
JP (1) JPS57174957A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284101A2 (en) * 1987-03-27 1988-09-28 Sanyo Electric Co., Ltd. FM/FMX stereophonic receiver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54126514U (en) * 1978-02-23 1979-09-04
JPS5528685A (en) * 1978-08-23 1980-02-29 Mitsubishi Electric Corp Fm stereo radio receiver
JPS55134554A (en) * 1979-04-06 1980-10-20 Matsushita Electric Ind Co Ltd Radio receiver
JPS55153444A (en) * 1979-05-18 1980-11-29 Hitachi Ltd Automatic switching unit for stereo-monaural

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54126514U (en) * 1978-02-23 1979-09-04
JPS5528685A (en) * 1978-08-23 1980-02-29 Mitsubishi Electric Corp Fm stereo radio receiver
JPS55134554A (en) * 1979-04-06 1980-10-20 Matsushita Electric Ind Co Ltd Radio receiver
JPS55153444A (en) * 1979-05-18 1980-11-29 Hitachi Ltd Automatic switching unit for stereo-monaural

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0284101A2 (en) * 1987-03-27 1988-09-28 Sanyo Electric Co., Ltd. FM/FMX stereophonic receiver

Also Published As

Publication number Publication date
JPH0347614B2 (en) 1991-07-19

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