JPS5489513A - Fm receiver - Google Patents

Fm receiver

Info

Publication number
JPS5489513A
JPS5489513A JP15970577A JP15970577A JPS5489513A JP S5489513 A JPS5489513 A JP S5489513A JP 15970577 A JP15970577 A JP 15970577A JP 15970577 A JP15970577 A JP 15970577A JP S5489513 A JPS5489513 A JP S5489513A
Authority
JP
Japan
Prior art keywords
signal
shape
muting
level
varied
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
JP15970577A
Other languages
Japanese (ja)
Inventor
Mitsuo Osawa
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP15970577A priority Critical patent/JPS5489513A/en
Publication of JPS5489513A publication Critical patent/JPS5489513A/en
Pending legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)

Abstract

PURPOSE: To simplify IC-implementation by obtaining a muting signal and also making it possible to vary its band width, by obtaining a fixed level-variation signal by the use of a S-shaped demodulated signal.
CONSTITUTION: Signals Sa to Sc, obtained from IF stage 1, are rectified 81 to 83 to obtain addition signal Iw. From a signal from demodulator circuit 40, a signal whose level varies with an IF in a S-shape (N-shape) is obtained by filter 5 and through full-wave rectification 61, signal I56 is obtained whose level varies with an IF in a M-shape (V-shape). Then, subtraction signal I73 between signals I56 and Iw is obtained and its band width is limited by a signal obtained by shaping 72 this I73 at a fixed threshold level; and muting switch 2 is controlled by this limited signal and the level of I73 is varied, so that a band where muting is released can be varied.
COPYRIGHT: (C)1979,JPO&Japio
JP15970577A 1977-12-27 1977-12-27 Fm receiver Pending JPS5489513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15970577A JPS5489513A (en) 1977-12-27 1977-12-27 Fm receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15970577A JPS5489513A (en) 1977-12-27 1977-12-27 Fm receiver

Publications (1)

Publication Number Publication Date
JPS5489513A true JPS5489513A (en) 1979-07-16

Family

ID=15699496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15970577A Pending JPS5489513A (en) 1977-12-27 1977-12-27 Fm receiver

Country Status (1)

Country Link
JP (1) JPS5489513A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655033U (en) * 1992-10-28 1994-07-26 株式会社サン・フロンティア・テクノロジー Cylinder heating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655033U (en) * 1992-10-28 1994-07-26 株式会社サン・フロンティア・テクノロジー Cylinder heating device

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