JPS5720047A - Am stereophonic receiver - Google Patents

Am stereophonic receiver

Info

Publication number
JPS5720047A
JPS5720047A JP9450080A JP9450080A JPS5720047A JP S5720047 A JPS5720047 A JP S5720047A JP 9450080 A JP9450080 A JP 9450080A JP 9450080 A JP9450080 A JP 9450080A JP S5720047 A JPS5720047 A JP S5720047A
Authority
JP
Japan
Prior art keywords
signal
stereophonic
state
circuit
reception state
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
JP9450080A
Other languages
Japanese (ja)
Other versions
JPS6242542B2 (en
Inventor
Shoichi Nakamura
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 JP9450080A priority Critical patent/JPS5720047A/en
Publication of JPS5720047A publication Critical patent/JPS5720047A/en
Publication of JPS6242542B2 publication Critical patent/JPS6242542B2/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 suppress the generation of noises by holding a stereophonic reception state close to a detuning state by setting the stereophonic reception state on detecting a pilot signal and by switchng it to a monaural reception state on detecting a drop of the output level of an AM stereophonic signal. CONSTITUTION:An AM stereophonic signal is received by a tuner circuit 2, and the sum signal of a left and a right signal is outputted from an AM detecting circuit 3. A PM detecting circuit 5 outputs the difference signal of the left and right signals by the output of a limiter 8. A transistor (TR)8 detects whether the output level of the AM stereophonic signal is greater or less than a preset reference level and when the circuit 5 detects the pilot signal in the process of transition from a detuning state to a tuning state, a receiving circuit is placed in a stereophonic reception state. When the decision that the otput level of the signal is less than the reference level is made in the process of transition from the tuning state to th detuning state, the receiving circuit is switched to the monaural reception state regardless of the existence of the pilot signal.
JP9450080A 1980-07-09 1980-07-09 Am stereophonic receiver Granted JPS5720047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9450080A JPS5720047A (en) 1980-07-09 1980-07-09 Am stereophonic receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9450080A JPS5720047A (en) 1980-07-09 1980-07-09 Am stereophonic receiver

Publications (2)

Publication Number Publication Date
JPS5720047A true JPS5720047A (en) 1982-02-02
JPS6242542B2 JPS6242542B2 (en) 1987-09-09

Family

ID=14112022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9450080A Granted JPS5720047A (en) 1980-07-09 1980-07-09 Am stereophonic receiver

Country Status (1)

Country Link
JP (1) JPS5720047A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61107819A (en) * 1984-10-31 1986-05-26 Aiwa Co Ltd Method for extracting mixed identification signal
JPS61172641A (en) * 1985-01-28 1986-08-04 Japan Royal Seiki:Kk Swaging equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61107819A (en) * 1984-10-31 1986-05-26 Aiwa Co Ltd Method for extracting mixed identification signal
JPS61172641A (en) * 1985-01-28 1986-08-04 Japan Royal Seiki:Kk Swaging equipment

Also Published As

Publication number Publication date
JPS6242542B2 (en) 1987-09-09

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