JPS5578643A - Pilot signal eliminating device for fm stereo receiver - Google Patents

Pilot signal eliminating device for fm stereo receiver

Info

Publication number
JPS5578643A
JPS5578643A JP15226878A JP15226878A JPS5578643A JP S5578643 A JPS5578643 A JP S5578643A JP 15226878 A JP15226878 A JP 15226878A JP 15226878 A JP15226878 A JP 15226878A JP S5578643 A JPS5578643 A JP S5578643A
Authority
JP
Japan
Prior art keywords
waveforms
pilot signal
theta
sample holding
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.)
Granted
Application number
JP15226878A
Other languages
Japanese (ja)
Other versions
JPS5851699B2 (en
Inventor
Junichi Hikita
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.)
Rohm Co Ltd
Original Assignee
Rohm Co Ltd
Toyo Electronics Industry 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 Rohm Co Ltd, Toyo Electronics Industry Corp filed Critical Rohm Co Ltd
Priority to JP15226878A priority Critical patent/JPS5851699B2/en
Publication of JPS5578643A publication Critical patent/JPS5578643A/en
Publication of JPS5851699B2 publication Critical patent/JPS5851699B2/en
Expired 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)

Abstract

PURPOSE:To secure the steady and assured elimination for the pilot signal by utilizing the fact that the phase shift is caused between the input and the output and before and after the sample holding. CONSTITUTION:The sample holding is given to the full peak value of stereo composite signal SC via 76kHz sampling signal (a) synchronizing with the pilot signal in order to obtain waveform A. The sample holding is then given to waveform A via 38kHz sampling signals (b) and (d) featuring the phase shift to signal (a) to obtain waveforms BL and BR having phase difference theta and theta'. Then waveforms A and BL are added together to obtain waveform CL, and waveforms A and BR are added together to obtain waveform CR each. And the sample holding is given to waveforms CL and CR via sampling signals (c) and (e) generated between theta and theta' to obtain waveforms DL and DR. These waveforms are then averaged to give the demodulation to signals L and R with the pilot signal eliminated.
JP15226878A 1978-12-07 1978-12-07 Pilot signal removal device for FM stereo receiver Expired JPS5851699B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15226878A JPS5851699B2 (en) 1978-12-07 1978-12-07 Pilot signal removal device for FM stereo receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15226878A JPS5851699B2 (en) 1978-12-07 1978-12-07 Pilot signal removal device for FM stereo receiver

Publications (2)

Publication Number Publication Date
JPS5578643A true JPS5578643A (en) 1980-06-13
JPS5851699B2 JPS5851699B2 (en) 1983-11-17

Family

ID=15536770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15226878A Expired JPS5851699B2 (en) 1978-12-07 1978-12-07 Pilot signal removal device for FM stereo receiver

Country Status (1)

Country Link
JP (1) JPS5851699B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07197578A (en) * 1993-12-29 1995-08-01 Kajita Kensetsu Kk Cold district use dirt floor construction work method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07197578A (en) * 1993-12-29 1995-08-01 Kajita Kensetsu Kk Cold district use dirt floor construction work method

Also Published As

Publication number Publication date
JPS5851699B2 (en) 1983-11-17

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