JPS5684095A - Magnetic video recorder - Google Patents

Magnetic video recorder

Info

Publication number
JPS5684095A
JPS5684095A JP16224779A JP16224779A JPS5684095A JP S5684095 A JPS5684095 A JP S5684095A JP 16224779 A JP16224779 A JP 16224779A JP 16224779 A JP16224779 A JP 16224779A JP S5684095 A JPS5684095 A JP S5684095A
Authority
JP
Japan
Prior art keywords
frequency
signal
chrominance
converting
output
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.)
Pending
Application number
JP16224779A
Other languages
Japanese (ja)
Inventor
Mitsuo Chiba
Norio Meki
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 JP16224779A priority Critical patent/JPS5684095A/en
Publication of JPS5684095A publication Critical patent/JPS5684095A/en
Pending 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
    • H04N9/83—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 the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
    • H04N9/84—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 the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency

Landscapes

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

Abstract

PURPOSE:To prevent picture quality from deteriorating by preventing a disused component from mixing into a signal for frequency conversion of a chrominance signal, by obtaining the frequency converting signal from a variable frequency oscillator in a color signal processing circuit of a magnetic video recorder. CONSTITUTION:The output (frequency: fc+40fH where fc is chrominance subcarrier frequency) of variable frequency oscillator 18 varying in frequency with the phase difference between horizontal synchronizing signals (frequency: fH) obtained by phase comparator 10 is inputted to frequency-converting multiplier 4 for the chrominance signal and multiplied by the other input chrominance subcarrier, and the output of the multiplication is inputted to low-pass filter 5 to obtain difference signal 40fH. The signal for frequency-converting the chrominance signal into a low-frequency band is obtained by the variable frequency oscillator as mentioned above. Consequently, no disused component mixes into the multiplier output and nothing is mixed into the FM luminance signal band and color signal band, so that the deterioration of reproduced video is prevented.
JP16224779A 1979-12-13 1979-12-13 Magnetic video recorder Pending JPS5684095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16224779A JPS5684095A (en) 1979-12-13 1979-12-13 Magnetic video recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16224779A JPS5684095A (en) 1979-12-13 1979-12-13 Magnetic video recorder

Publications (1)

Publication Number Publication Date
JPS5684095A true JPS5684095A (en) 1981-07-09

Family

ID=15750784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16224779A Pending JPS5684095A (en) 1979-12-13 1979-12-13 Magnetic video recorder

Country Status (1)

Country Link
JP (1) JPS5684095A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6324785A (en) * 1986-07-17 1988-02-02 Sanyo Electric Co Ltd Video tape recorder
JPH01120193A (en) * 1987-11-02 1989-05-12 Mitsubishi Electric Corp Converter for low-band frequency of carrier chrominance signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6324785A (en) * 1986-07-17 1988-02-02 Sanyo Electric Co Ltd Video tape recorder
JPH01120193A (en) * 1987-11-02 1989-05-12 Mitsubishi Electric Corp Converter for low-band frequency of carrier chrominance signal

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