JPS57121377A - Video intermediate frequency circuit for television receiver - Google Patents

Video intermediate frequency circuit for television receiver

Info

Publication number
JPS57121377A
JPS57121377A JP726681A JP726681A JPS57121377A JP S57121377 A JPS57121377 A JP S57121377A JP 726681 A JP726681 A JP 726681A JP 726681 A JP726681 A JP 726681A JP S57121377 A JPS57121377 A JP S57121377A
Authority
JP
Japan
Prior art keywords
circuit
sound
intermediate frequency
video
television receiver
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
JP726681A
Other languages
Japanese (ja)
Other versions
JPS615310B2 (en
Inventor
Teruo Kawabata
Koreyoshi Saitou
Kaoru Someya
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.)
Fujitsu General Ltd
Aerojet Rocketdyne Holdings Inc
Original Assignee
Fujitsu General Ltd
Gencorp 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 Fujitsu General Ltd, Gencorp Inc filed Critical Fujitsu General Ltd
Priority to JP726681A priority Critical patent/JPS57121377A/en
Publication of JPS57121377A publication Critical patent/JPS57121377A/en
Publication of JPS615310B2 publication Critical patent/JPS615310B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/4446—IF amplifier circuits specially adapted for B&W TV

Abstract

PURPOSE:To eliminate the sound crosscolor, by controlling the trap quantity by an AGC voltage. CONSTITUTION:Radio waves received by an antenna 1 reach a video amplifying circuit through a tuner 2, a sound trap circuit 3, a filter circuit 4, a video intermediate frequency amplifying circuit 5, and a video detecting circuit 6. When the antenna input field becomes stronger, an AGC circuit 7 increases the trap quantity in the circuit 3 through a sound trap quantity control circuit to eliminate the sound crosscolor.
JP726681A 1981-01-22 1981-01-22 Video intermediate frequency circuit for television receiver Granted JPS57121377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP726681A JPS57121377A (en) 1981-01-22 1981-01-22 Video intermediate frequency circuit for television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP726681A JPS57121377A (en) 1981-01-22 1981-01-22 Video intermediate frequency circuit for television receiver

Publications (2)

Publication Number Publication Date
JPS57121377A true JPS57121377A (en) 1982-07-28
JPS615310B2 JPS615310B2 (en) 1986-02-17

Family

ID=11661220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP726681A Granted JPS57121377A (en) 1981-01-22 1981-01-22 Video intermediate frequency circuit for television receiver

Country Status (1)

Country Link
JP (1) JPS57121377A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067286A1 (en) * 2003-12-22 2005-07-21 Thomson Licensing Apparatus and method for providing automatic gain control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0252912U (en) * 1988-10-11 1990-04-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067286A1 (en) * 2003-12-22 2005-07-21 Thomson Licensing Apparatus and method for providing automatic gain control

Also Published As

Publication number Publication date
JPS615310B2 (en) 1986-02-17

Similar Documents

Publication Publication Date Title
JPS5643809A (en) Automatic gain controller
JPS57121377A (en) Video intermediate frequency circuit for television receiver
JPS57212879A (en) Automatically switchable directional antenna device
JPS57212880A (en) Automatically switchable directional antenna device
JPS5684074A (en) Antenna mixer
FR2403702A1 (en) TV receiver circuit with tuner AGC - has comparator for comparing detected video output signal with reference signal to provide AGC signal
US4282602A (en) Channel signal detection circuit for scanning receivers
JPS57180216A (en) Agc circuit for television receiver
JPS57201378A (en) Video synchronization detecting device and phase correcting device
JPS5579538A (en) Tuner unit of television receiver
GB2093291B (en) Gain control circuit for high frequency and intermediate frequency stages in radio or television receivers
JPS56109046A (en) Tuner device
JPS55134583A (en) Automatic preset channel selector of television receiver
JPS5769982A (en) Audio reception circuit for television receiver
JPS533012A (en) Tuner unit
JPS57199339A (en) Reception switching circuit for television receiver
JPS57115034A (en) Television tuner circuit
JPS55162637A (en) Fm receiver
JPS5521683A (en) Television relay and broadcasting unit
JPS5549030A (en) Sensitivity change-over circuit of automatic tuning type tuner
JPS5724115A (en) Channel selector
JPS55140337A (en) Intermodulation disturbance improving circuit of radio receiver
JPS57115035A (en) Television receiver
JPS5787638A (en) Am stereo receiver
JPS572133A (en) Tuner circuit