JPS5481026A - Frequency converter for secam color video signal - Google Patents

Frequency converter for secam color video signal

Info

Publication number
JPS5481026A
JPS5481026A JP14900877A JP14900877A JPS5481026A JP S5481026 A JPS5481026 A JP S5481026A JP 14900877 A JP14900877 A JP 14900877A JP 14900877 A JP14900877 A JP 14900877A JP S5481026 A JPS5481026 A JP S5481026A
Authority
JP
Japan
Prior art keywords
signal
circuit
converted
video signal
modulation
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
JP14900877A
Other languages
Japanese (ja)
Other versions
JPS6012835B2 (en
Inventor
Toshihiko Numakura
Kazuo Yamagiwa
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 JP52149008A priority Critical patent/JPS6012835B2/en
Priority to US05/960,839 priority patent/US4220964A/en
Priority to AU41641/78A priority patent/AU521182B2/en
Priority to DE19782849759 priority patent/DE2849759A1/en
Priority to CA316,438A priority patent/CA1124835A/en
Priority to GB7845196A priority patent/GB2008891B/en
Priority to IT29964/78A priority patent/IT1101115B/en
Priority to NL7811465A priority patent/NL7811465A/en
Priority to FR7832817A priority patent/FR2409650A1/en
Publication of JPS5481026A publication Critical patent/JPS5481026A/en
Publication of JPS6012835B2 publication Critical patent/JPS6012835B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To reject noise on the screen at reproduction, by performing frequency conversion with AC signal formed every horizontal pulse for the chrominance signal, and specifying the phase of the AC signal through picking up non-modulation signal component from the chrominance signal.
CONSTITUTION: The luminance signal Sy is picked up from the video signal via LPE, and it is converted into FM signal Sf with the FM modulation circuit 17 and is fed to the adder 19 via HPF 18. Further, chrominance signal Ss is picked up from the video signal via BPF 31 and it is converted with the AC signal Su through the frequency converter 34. The horizontal synchronizing signal Ss is converted into the discrimination signal Si since no modulation is made at the back porch period of the horizontal synchronizing pulse Ph and is fed as the regulation signal of the oscillation phase of the oscillator circuit 71. This circuit eliminates the cross talk between tracks and the circuit constitution is simplified.
COPYRIGHT: (C)1979,JPO&Japio
JP52149008A 1977-11-21 1977-12-12 SECAM color video signal frequency conversion device Expired JPS6012835B2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP52149008A JPS6012835B2 (en) 1977-12-12 1977-12-12 SECAM color video signal frequency conversion device
US05/960,839 US4220964A (en) 1977-11-21 1978-11-15 Secam recording and reproducing system
AU41641/78A AU521182B2 (en) 1977-11-21 1978-11-16 Video signal recording and reproduction
DE19782849759 DE2849759A1 (en) 1977-11-21 1978-11-16 CIRCUIT ARRANGEMENT FOR RECORDING SECAM COLOR IMAGE SIGNALS ON A RECORDING MEDIUM
CA316,438A CA1124835A (en) 1977-11-21 1978-11-17 Secam recording and reproducing system
GB7845196A GB2008891B (en) 1977-11-21 1978-11-20 Video signal recording and reproduction
IT29964/78A IT1101115B (en) 1977-11-21 1978-11-20 VIDEO SIGNAL RECORDING AND REPRODUCTION APPARATUS
NL7811465A NL7811465A (en) 1977-11-21 1978-11-21 DEVICE FOR RECORDING AND / OR DISPLAY OF COLOR VIDEO SIGNALS OF THE SECAM TYPE.
FR7832817A FR2409650A1 (en) 1977-11-21 1978-11-21 SECAM TELEVISION SIGNAL RECORDING AND REPRODUCTION DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52149008A JPS6012835B2 (en) 1977-12-12 1977-12-12 SECAM color video signal frequency conversion device

Publications (2)

Publication Number Publication Date
JPS5481026A true JPS5481026A (en) 1979-06-28
JPS6012835B2 JPS6012835B2 (en) 1985-04-03

Family

ID=15465644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52149008A Expired JPS6012835B2 (en) 1977-11-21 1977-12-12 SECAM color video signal frequency conversion device

Country Status (1)

Country Link
JP (1) JPS6012835B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619981U (en) * 1979-07-20 1981-02-21
JPS5619982U (en) * 1979-07-20 1981-02-21

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619981U (en) * 1979-07-20 1981-02-21
JPS5619982U (en) * 1979-07-20 1981-02-21
JPS6119590Y2 (en) * 1979-07-20 1986-06-12
JPS6119591Y2 (en) * 1979-07-20 1986-06-12

Also Published As

Publication number Publication date
JPS6012835B2 (en) 1985-04-03

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