JPS57199351A - Multiple signal receiver - Google Patents

Multiple signal receiver

Info

Publication number
JPS57199351A
JPS57199351A JP56084680A JP8468081A JPS57199351A JP S57199351 A JPS57199351 A JP S57199351A JP 56084680 A JP56084680 A JP 56084680A JP 8468081 A JP8468081 A JP 8468081A JP S57199351 A JPS57199351 A JP S57199351A
Authority
JP
Japan
Prior art keywords
phase error
components
signal
phi
carrier wave
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
JP56084680A
Other languages
Japanese (ja)
Other versions
JPS6248420B2 (en
Inventor
Shunichi Nezu
Kenzo Tanabe
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56084680A priority Critical patent/JPS57199351A/en
Publication of JPS57199351A publication Critical patent/JPS57199351A/en
Publication of JPS6248420B2 publication Critical patent/JPS6248420B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To separate a stereo signal well surely and stably, by extracting pilot signal components from two demodulation signals to correct the phase error of a reproducing carrier wave corresponding to the carrier wave to be modulated in the AM stereo receiver. CONSTITUTION:When pilot components in outputs of multipliers 6 and 7 for a phase error phi are denoted as P1 and P2, P1=-(1/2)Psinphi and P2-(1/2)Pcosphi are true, and these pilot components are extracted by BPFs 10 and 11. These signals P1 and P2 are multiplied in a multiplier 12, and DC components A(phi) having the phase error discrimination characteristics are extracted by an LPF13. This signal A(phi) controls a local oscillator 3. Thus, a carrier wave generator 5 utilizes the fact that the phase difference between an input signal and an output signal is changed by the input signal frequency to correc the phase error.
JP56084680A 1981-06-01 1981-06-01 Multiple signal receiver Granted JPS57199351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56084680A JPS57199351A (en) 1981-06-01 1981-06-01 Multiple signal receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56084680A JPS57199351A (en) 1981-06-01 1981-06-01 Multiple signal receiver

Publications (2)

Publication Number Publication Date
JPS57199351A true JPS57199351A (en) 1982-12-07
JPS6248420B2 JPS6248420B2 (en) 1987-10-14

Family

ID=13837402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56084680A Granted JPS57199351A (en) 1981-06-01 1981-06-01 Multiple signal receiver

Country Status (1)

Country Link
JP (1) JPS57199351A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6178206A (en) * 1984-09-26 1986-04-21 Fujitsu Ten Ltd Phase locked circuit device
JPH05145502A (en) * 1991-11-18 1993-06-11 Hibiya Eng Ltd Double side band amplitude modulation phase duplex transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6178206A (en) * 1984-09-26 1986-04-21 Fujitsu Ten Ltd Phase locked circuit device
JPH05145502A (en) * 1991-11-18 1993-06-11 Hibiya Eng Ltd Double side band amplitude modulation phase duplex transmission system

Also Published As

Publication number Publication date
JPS6248420B2 (en) 1987-10-14

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