JPS55145447A - Noise eliminating circuit - Google Patents

Noise eliminating circuit

Info

Publication number
JPS55145447A
JPS55145447A JP5288979A JP5288979A JPS55145447A JP S55145447 A JPS55145447 A JP S55145447A JP 5288979 A JP5288979 A JP 5288979A JP 5288979 A JP5288979 A JP 5288979A JP S55145447 A JPS55145447 A JP S55145447A
Authority
JP
Japan
Prior art keywords
circuit
output
noise
signal
cancel signal
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.)
Pending
Application number
JP5288979A
Other languages
Japanese (ja)
Inventor
Sadao Kondo
Hiroyasu Kishi
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
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric 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 filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP5288979A priority Critical patent/JPS55145447A/en
Priority to US06/133,932 priority patent/US4314377A/en
Priority to CA000348551A priority patent/CA1144081A/en
Priority to DE8080102251T priority patent/DE3067514D1/en
Priority to EP80102251A priority patent/EP0018608B1/en
Publication of JPS55145447A publication Critical patent/JPS55145447A/en
Pending 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)
  • Stereo-Broadcasting Methods (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To suppress the undesired component of the stereo composite signal and then secure the effective detection of only the pulse noise, by providing the subcarrier generating circuit which supplies the output of the 1st gate circuit plus the 2nd gate circuit which gives the control to the output of the subcarrier generating circuit. CONSTITUTION:The noise eliminating circuit consists of the 1st gate circuit 6 which is cut off according to generation of the pulsating noise plus the 1st holding capacitor 7 connected to the output end of circuit 6. Then the output of this circuit is supplied to generate the cancel signal having the same or opposite phase to the stereo composite signal contained in the stereo composite signal through subcarrier generating circuit 9 and cancel signal generating circuit 16. Then the cancel signal is applied to adder circuit 19 via the 2nd holding capacitor 18 as well as the 2nd gate circuit 17 which operates in synchronization with circuit 6. And the subtraction or addition is given between the stero pilot signal sent from circuit 6 and the cancel signal sent from circuit 17, thus ensuring the effective detection for only the pulse noise.
JP5288979A 1979-04-27 1979-04-27 Noise eliminating circuit Pending JPS55145447A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP5288979A JPS55145447A (en) 1979-04-27 1979-04-27 Noise eliminating circuit
US06/133,932 US4314377A (en) 1979-04-27 1980-03-25 Noise removing apparatus
CA000348551A CA1144081A (en) 1979-04-27 1980-03-25 Noise removing apparatus
DE8080102251T DE3067514D1 (en) 1979-04-27 1980-04-25 A noise removing apparatus
EP80102251A EP0018608B1 (en) 1979-04-27 1980-04-25 A noise removing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5288979A JPS55145447A (en) 1979-04-27 1979-04-27 Noise eliminating circuit

Publications (1)

Publication Number Publication Date
JPS55145447A true JPS55145447A (en) 1980-11-13

Family

ID=12927427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5288979A Pending JPS55145447A (en) 1979-04-27 1979-04-27 Noise eliminating circuit

Country Status (1)

Country Link
JP (1) JPS55145447A (en)

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