JPS6017071U - RF modulator - Google Patents

RF modulator

Info

Publication number
JPS6017071U
JPS6017071U JP10858983U JP10858983U JPS6017071U JP S6017071 U JPS6017071 U JP S6017071U JP 10858983 U JP10858983 U JP 10858983U JP 10858983 U JP10858983 U JP 10858983U JP S6017071 U JPS6017071 U JP S6017071U
Authority
JP
Japan
Prior art keywords
carrier frequencies
television broadcasting
switch
switches
modulator
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
JP10858983U
Other languages
Japanese (ja)
Other versions
JPS6311800Y2 (en
Inventor
山口　好惟
Original Assignee
アルプス電気株式会社
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 アルプス電気株式会社 filed Critical アルプス電気株式会社
Priority to JP10858983U priority Critical patent/JPS6017071U/en
Priority to GB08415586A priority patent/GB2143391B/en
Priority to DE19843425405 priority patent/DE3425405A1/en
Publication of JPS6017071U publication Critical patent/JPS6017071U/en
Application granted granted Critical
Publication of JPS6311800Y2 publication Critical patent/JPS6311800Y2/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
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H04N5/40—Modulation circuits

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来のＲＦモジュレータにおける音声搬送波発
振周波数切替回路、第２図は本考案に係るＲＦモジュレ
ータの一実施例回路構成を示している。 図中、１は発振素子、２は同調用コンデンサ、３はバイ
パス・コンデンサ、４．　５．　６は同調用コイル、７
は切替スイッチ、８はスイッチ、９゜１０は直流阻止用
コンデンサ、１１は電子スイッチ用ダイオード、１２は
チョーク・コイル、１３はバイアス電源端子、１４はバ
イアス抵抗、１５は逆流防止用ダイオード、１６は電子
スイッチ電源端子を表わしている。FIG. 1 shows an audio carrier oscillation frequency switching circuit in a conventional RF modulator, and FIG. 2 shows an embodiment of the circuit configuration of an RF modulator according to the present invention. In the figure, 1 is an oscillation element, 2 is a tuning capacitor, 3 is a bypass capacitor, 4. 5. 6 is a tuning coil, 7
is a selector switch, 8 is a switch, 9゜10 is a DC blocking capacitor, 11 is an electronic switch diode, 12 is a choke coil, 13 is a bias power supply terminal, 14 is a bias resistor, 15 is a reverse current prevention diode, 16 is a Represents electronic switch power terminals.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] テレビジョン放送方式の相違を一部分の部品の切替によ
り吸収し、各テレビジョン放送方式に適合した搬送波周
波数の切替を行うようにしたＲＦモジュレータにおいて
、異なった方式間の切換を行う電子的スイッチを設ける
と共に、同一方式内の搬送波周波数の切換を行う機械的
スイッチを備え、これらのスイッチにより夫々のテレビ
ジョン放送方式に適合した搬送波周波数の切替が行われ
るようにしたことを特徴とするＲＦモジュ、レーク。In an RF modulator that absorbs differences in television broadcasting systems by switching some parts and switches carrier frequencies suitable for each television broadcasting system, an electronic switch is provided to switch between different systems. An RF module, RAKE, characterized in that it is also equipped with mechanical switches for switching carrier frequencies within the same system, and these switches switch carrier frequencies compatible with each television broadcasting system. .
JP10858983U 1983-07-13 1983-07-13 RF modulator Granted JPS6017071U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP10858983U JPS6017071U (en) 1983-07-13 1983-07-13 RF modulator
GB08415586A GB2143391B (en) 1983-07-13 1984-06-19 A radio frequency modulator
DE19843425405 DE3425405A1 (en) 1983-07-13 1984-07-10 RF MODULATOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10858983U JPS6017071U (en) 1983-07-13 1983-07-13 RF modulator

Publications (2)

Publication Number Publication Date
JPS6017071U true JPS6017071U (en) 1985-02-05
JPS6311800Y2 JPS6311800Y2 (en) 1988-04-06

Family

ID=14488634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10858983U Granted JPS6017071U (en) 1983-07-13 1983-07-13 RF modulator

Country Status (3)

Country Link
JP (1) JPS6017071U (en)
DE (1) DE3425405A1 (en)
GB (1) GB2143391B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121027A1 (en) * 1991-06-26 1993-01-07 Thomson Brandt Gmbh ARRANGEMENT FOR A VIDEO AND SOUND MODULATOR
JP3240030B2 (en) * 1994-04-06 2001-12-17 ソニー株式会社 Frequency modulation circuit
CN1066885C (en) * 1995-01-04 2001-06-06 船井电机株式会社 Circuit device including RF converter, tuner and IF amplifier
GB2301245B (en) * 1995-04-18 1999-07-07 Samsung Electro Mech Radio frequency modulating circuit for use in PAL method

Also Published As

Publication number Publication date
DE3425405A1 (en) 1985-01-31
DE3425405C2 (en) 1987-08-06
GB2143391A (en) 1985-02-06
JPS6311800Y2 (en) 1988-04-06
GB8415586D0 (en) 1984-07-25
GB2143391B (en) 1987-03-18

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