JPS55135486A - Beam index type color television picture receiver - Google Patents

Beam index type color television picture receiver

Info

Publication number
JPS55135486A
JPS55135486A JP4351079A JP4351079A JPS55135486A JP S55135486 A JPS55135486 A JP S55135486A JP 4351079 A JP4351079 A JP 4351079A JP 4351079 A JP4351079 A JP 4351079A JP S55135486 A JPS55135486 A JP S55135486A
Authority
JP
Japan
Prior art keywords
signal
circuit
supplied
luminance
frequency
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
JP4351079A
Other languages
Japanese (ja)
Inventor
Katsuo Isono
Susumu Akazawa
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 JP4351079A priority Critical patent/JPS55135486A/en
Publication of JPS55135486A publication Critical patent/JPS55135486A/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 realize the accurate and assured control of the high-speed response type by securing such constitution in that the mean value or the peak value is detected for the output signal of the photo detector and then the detection signal is supplied to the luminance control circuit or the contrast adjuster circuit as the control signal to perform the automatic luminance limit. CONSTITUTION:The luminance signal sent from the video amplifier circuit is supplied to matrix circuit 30 via contrast adjuster circuit 10 and then luminance adjuster circuit 20 each. At the same time, the carrier chrominance signal extracted by the band pass amplifier is supplied to demodulator circuit through color level adjuster circuit 40 to obtain the color difference signal. This signal is then supplied to gate circuits 60R-60B. On the other hand, photo detector 80 is provided outside the funnel part of beam index type color pickup tube 70, and the output signal of detector 80 is supplied to BPF90. Thus the index signal featuring the frequency decided by the pitch of the index fluorescent substance stripes plus the scanning velocity of the electron beam is extracted to be supplied to PLL circuit 100. Thus the signal featuring the frequency of three times as high as the triplet frequency can be obtained.
JP4351079A 1979-04-10 1979-04-10 Beam index type color television picture receiver Pending JPS55135486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4351079A JPS55135486A (en) 1979-04-10 1979-04-10 Beam index type color television picture receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4351079A JPS55135486A (en) 1979-04-10 1979-04-10 Beam index type color television picture receiver

Publications (1)

Publication Number Publication Date
JPS55135486A true JPS55135486A (en) 1980-10-22

Family

ID=12665724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4351079A Pending JPS55135486A (en) 1979-04-10 1979-04-10 Beam index type color television picture receiver

Country Status (1)

Country Link
JP (1) JPS55135486A (en)

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