JPS5637789A - Frequency modulating device - Google Patents

Frequency modulating device

Info

Publication number
JPS5637789A
JPS5637789A JP11464579A JP11464579A JPS5637789A JP S5637789 A JPS5637789 A JP S5637789A JP 11464579 A JP11464579 A JP 11464579A JP 11464579 A JP11464579 A JP 11464579A JP S5637789 A JPS5637789 A JP S5637789A
Authority
JP
Japan
Prior art keywords
signal
supplied
circuit
color
amplitude
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
JP11464579A
Other languages
Japanese (ja)
Other versions
JPS6111518B2 (en
Inventor
Hiroshi Kitaura
Katsuhiko Yamamoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11464579A priority Critical patent/JPS5637789A/en
Publication of JPS5637789A publication Critical patent/JPS5637789A/en
Publication of JPS6111518B2 publication Critical patent/JPS6111518B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To secure a sufficient function of the time base collector, by reducing the amplitude of the color FM signal of the TV video signal during the horizontal blanking period. CONSTITUTION:The luminance signal supplied from the terminal 11 is added with the burst type pilot signal from the gate circuit 16 and then supplied to the adder circuit 24 after the FM modulation 19. On the other hand, the color signal supplied from the terminal 12 is applied to the amplitude control circuit 23 after the FM modulation 20 and then supplied to the circuit 24 after the reduction given to the amplitude for the period during which the pilot signal exists. Then the output of the circuit 24 is supplied to the magnetic head 26. Thus the best S/N is obtained in the range under which the beat due to the cross modulation is not conspicuous by giving an amplitude control to the color FM signal. And then the beat due to the FM signal can be eliminated substantially during the horizontal blanking period, thus securing a sufficient function of the time base collector.
JP11464579A 1979-09-05 1979-09-05 Frequency modulating device Granted JPS5637789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11464579A JPS5637789A (en) 1979-09-05 1979-09-05 Frequency modulating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11464579A JPS5637789A (en) 1979-09-05 1979-09-05 Frequency modulating device

Publications (2)

Publication Number Publication Date
JPS5637789A true JPS5637789A (en) 1981-04-11
JPS6111518B2 JPS6111518B2 (en) 1986-04-03

Family

ID=14642978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11464579A Granted JPS5637789A (en) 1979-09-05 1979-09-05 Frequency modulating device

Country Status (1)

Country Link
JP (1) JPS5637789A (en)

Also Published As

Publication number Publication date
JPS6111518B2 (en) 1986-04-03

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