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JPS57152788A - Beam index type color television receiver - Google Patents

Beam index type color television receiver

Info

Publication number
JPS57152788A
JPS57152788A JP3980881A JP3980881A JPS57152788A JP S57152788 A JPS57152788 A JP S57152788A JP 3980881 A JP3980881 A JP 3980881A JP 3980881 A JP3980881 A JP 3980881A JP S57152788 A JPS57152788 A JP S57152788A
Authority
JP
Japan
Prior art keywords
signal
false
color
frequency
index
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
JP3980881A
Other languages
Japanese (ja)
Inventor
Morio Matsudaira
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP3980881A priority Critical patent/JPS57152788A/en
Publication of JPS57152788A publication Critical patent/JPS57152788A/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
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
    • H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To improve the preciseness of index signals by removing a phase error in the index signal detected by a false sigal generated so as to include the phase error due to chromatic scanning, color and luminance signals. CONSTITUTION:A chromatic scanning signal generator 12 produces a chromatic scanning signal from a color signal from a terminal 15, a subcarrier from a terminal 7 and an output from a frequency converter 5 and the chromatic scanning signal is inputted to an adder 13 to generate a false signal composed of a luminance signal and a color sinal. The false signal is inputted to the frequency converter 5 through a multiplier 7 and a band pass amplifier 8 and the phase error is made to ''0'' by obtaining the frequency of the difference between the frequency of the false signal and that of an index signal from a filter 4. The sum of the frequency of the false signal and that of the color signal is found by a sum frequency converter 9 and composed with the luminance signal by the adder 10 to obtain a writing signal. Thus, preciseness of index signals can be improved.
JP3980881A 1981-03-18 1981-03-18 Beam index type color television receiver Pending JPS57152788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3980881A JPS57152788A (en) 1981-03-18 1981-03-18 Beam index type color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3980881A JPS57152788A (en) 1981-03-18 1981-03-18 Beam index type color television receiver

Publications (1)

Publication Number Publication Date
JPS57152788A true JPS57152788A (en) 1982-09-21

Family

ID=12563257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3980881A Pending JPS57152788A (en) 1981-03-18 1981-03-18 Beam index type color television receiver

Country Status (1)

Country Link
JP (1) JPS57152788A (en)

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