JPS5454522A - Frequency converter - Google Patents

Frequency converter

Info

Publication number
JPS5454522A
JPS5454522A JP12165277A JP12165277A JPS5454522A JP S5454522 A JPS5454522 A JP S5454522A JP 12165277 A JP12165277 A JP 12165277A JP 12165277 A JP12165277 A JP 12165277A JP S5454522 A JPS5454522 A JP S5454522A
Authority
JP
Japan
Prior art keywords
frequency
terminal
fed
carrier
signal
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
JP12165277A
Other languages
Japanese (ja)
Other versions
JPS6033032B2 (en
Inventor
Yasunobu Kuniyoshi
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 JP52121652A priority Critical patent/JPS6033032B2/en
Publication of JPS5454522A publication Critical patent/JPS5454522A/en
Publication of JPS6033032B2 publication Critical patent/JPS6033032B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To enable to establish the reproduced picture without color unevenness, by performing the frequency conversion for the carrier chrominance signal based on the carrier having the frequency corresponding to the sum and difference between the carrier frequency of the carrier chrominance signal and a given carrier frequency.
CONSTITUTION: The signal in frequency fc[(44-1/4)fh; where: fh is horizontal frequency] from the AFC circuit 5 of the frequency converter and the signal in frequency fs from the crystal oscillator 6 are fed to the frequency converter 7, the output is fed to the BPF 8 and 9 through which the carriers Sr1 and Sr2 in frequency fs+fc(about 4.27 MHz) and fs-fc(about 2.89 MHz) are passed, and the signals are fed to the input terminals a and b of the circuit 10. Further, FF34 is triggered with the horizontal synchronizing signal Ph, the switching pulse Ps is the pulse in frequency 2fh causing high or low level every one horizohtal period, and the output terminal C is connected to the terminal a for the one horizontal period of high level and the terminal C is connected to the terminal b at low level. Further, Sr1 and Sr2 are alternately taken place at the terminal C every one horizontal period, and this is fed to the frequency converter 3
COPYRIGHT: (C)1979,JPO&Japio
JP52121652A 1977-10-11 1977-10-11 video tape recorder Expired JPS6033032B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52121652A JPS6033032B2 (en) 1977-10-11 1977-10-11 video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52121652A JPS6033032B2 (en) 1977-10-11 1977-10-11 video tape recorder

Publications (2)

Publication Number Publication Date
JPS5454522A true JPS5454522A (en) 1979-04-28
JPS6033032B2 JPS6033032B2 (en) 1985-07-31

Family

ID=14816540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52121652A Expired JPS6033032B2 (en) 1977-10-11 1977-10-11 video tape recorder

Country Status (1)

Country Link
JP (1) JPS6033032B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06165218A (en) * 1992-11-17 1994-06-10 Matsushita Electric Ind Co Ltd Video signal generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06165218A (en) * 1992-11-17 1994-06-10 Matsushita Electric Ind Co Ltd Video signal generator

Also Published As

Publication number Publication date
JPS6033032B2 (en) 1985-07-31

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