JPS5797244A - Automatic blending circuit for fm receiver - Google Patents

Automatic blending circuit for fm receiver

Info

Publication number
JPS5797244A
JPS5797244A JP17363280A JP17363280A JPS5797244A JP S5797244 A JPS5797244 A JP S5797244A JP 17363280 A JP17363280 A JP 17363280A JP 17363280 A JP17363280 A JP 17363280A JP S5797244 A JPS5797244 A JP S5797244A
Authority
JP
Japan
Prior art keywords
stereo
switching
monaural
circuit
reception
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
JP17363280A
Other languages
Japanese (ja)
Inventor
Kozo Suzuki
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.)
TOUKOU KK
Toko Inc
Original Assignee
TOUKOU KK
Toko Inc
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 TOUKOU KK, Toko Inc filed Critical TOUKOU KK
Priority to JP17363280A priority Critical patent/JPS5797244A/en
Publication of JPS5797244A publication Critical patent/JPS5797244A/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)

Abstract

PURPOSE:To switch stereo reception and monaural reception without producing noise, in an automatic blending circuit which switches stereo reception state and monaural reception state depending on the change in an input electric field strength of FM broadcast waves. CONSTITUTION:FM broadcast waves inputted from an antenna 1 is processed at a front end 2, then applied to a stereo demodulator 5 via an intermediate amplifying state 3 and a detection stage 4, and stereo signals are respectively separated into left and right signals and applied to amplifiers 10, 11. A DC voltage in response to the electric field strength of an input signal is obtained by applying the output of the stage 3 to a smoothing circuit 6. This DC voltage is applied to a level detector 7 to obtain a stereo/monaural switching signal. This switching signal is applied to a control circuit 9 via a time constant circuit 8 and the switching is made gradually, allowing to avoid noise at switching.
JP17363280A 1980-12-08 1980-12-08 Automatic blending circuit for fm receiver Pending JPS5797244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17363280A JPS5797244A (en) 1980-12-08 1980-12-08 Automatic blending circuit for fm receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17363280A JPS5797244A (en) 1980-12-08 1980-12-08 Automatic blending circuit for fm receiver

Publications (1)

Publication Number Publication Date
JPS5797244A true JPS5797244A (en) 1982-06-16

Family

ID=15964202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17363280A Pending JPS5797244A (en) 1980-12-08 1980-12-08 Automatic blending circuit for fm receiver

Country Status (1)

Country Link
JP (1) JPS5797244A (en)

Similar Documents

Publication Publication Date Title
EP0354519A3 (en) Surround decoder
JPS5797244A (en) Automatic blending circuit for fm receiver
US4691357A (en) Stereophonic receiving circuit providing improved switching characteristics between stereophonic and monaural modes
JPS55162637A (en) Fm receiver
JPS5617528A (en) Fm receiver
DE3163654D1 (en) Receiver circuit arrangement for two-tone/stereo broadcasting
JPH0628836Y2 (en) FM stereo receiver
JPS55134554A (en) Radio receiver
JPS5658344A (en) Signal receiver
JPS5560356A (en) Stereo signal demodulation system
JPS5578683A (en) Receiver
JPS646885A (en) Radar equipment
JPS5711584A (en) Audio multiplex broadcast discriminating circuit for television receiver
JPS5564478A (en) Television sound multiplex receiver
JPS5610750A (en) Radio receiver
JPS57192140A (en) Multipath interference eliminating circuit
JPS5737947A (en) Am stereo receiver
JPS56168454A (en) Am stereophonic receiver
JPS572133A (en) Tuner circuit
JPS5623036A (en) Fm tuner
JPS5558635A (en) Fm receiver
JPS56149127A (en) Radio receiver for vehicle
JPS56161731A (en) Stereo noise reducing method and its device
JPS57107669A (en) Monaural stereo switching circuit
JPS5546667A (en) Television sound multiplex broadcasting receiver