JPS5673989A - Color receiver of beam index type - Google Patents

Color receiver of beam index type

Info

Publication number
JPS5673989A
JPS5673989A JP15021979A JP15021979A JPS5673989A JP S5673989 A JPS5673989 A JP S5673989A JP 15021979 A JP15021979 A JP 15021979A JP 15021979 A JP15021979 A JP 15021979A JP S5673989 A JPS5673989 A JP S5673989A
Authority
JP
Japan
Prior art keywords
scanning start
focussing
mis
monostable multivibrator
horizontal scanning
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
JP15021979A
Other languages
Japanese (ja)
Other versions
JPS6217918B2 (en
Inventor
Tomonari Imayasu
Katsuo Isono
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 JP15021979A priority Critical patent/JPS5673989A/en
Publication of JPS5673989A publication Critical patent/JPS5673989A/en
Publication of JPS6217918B2 publication Critical patent/JPS6217918B2/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
    • H04N9/12—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 prevent white glitter on the left end of screen at mis-focussing, by clearing a monostable multivibrator in front of the effective screen with a low band signal from a photo detector, in a color receiver of beam index type. CONSTITUTION:A flip flop 43 is reset at the time point of the beginning of horizontal scanning start normally, the signal PX is obtained, a monostable multivibrator 46 is cleared with the output CP of the counter 45 obtained at the end of horizontal scanning start, and the switch 27 of the power supply 28 to drive the first grid 13 is cut off. At mis-focussing, at the start of hoirzontal scanning start, the flip flop 43 is not reset, but the light of index fluorescent stripe at the horizontal scanning start is detected at a photo detector 21, a signal PX is obtained through a low pass filter 51 to enable to clear a monostable multivibrator 46. Accordingly, even at mis- focussing, white glitter of the left end of effective screen, i.e., the start part, due to a given beam current is prevented.
JP15021979A 1979-11-20 1979-11-20 Color receiver of beam index type Granted JPS5673989A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15021979A JPS5673989A (en) 1979-11-20 1979-11-20 Color receiver of beam index type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15021979A JPS5673989A (en) 1979-11-20 1979-11-20 Color receiver of beam index type

Publications (2)

Publication Number Publication Date
JPS5673989A true JPS5673989A (en) 1981-06-19
JPS6217918B2 JPS6217918B2 (en) 1987-04-20

Family

ID=15492131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15021979A Granted JPS5673989A (en) 1979-11-20 1979-11-20 Color receiver of beam index type

Country Status (1)

Country Link
JP (1) JPS5673989A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167381A (en) * 1984-09-10 1986-04-07 Sony Corp Beam index type color television receiver
JPS6167382A (en) * 1984-09-10 1986-04-07 Sony Corp Beam index type color television receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167381A (en) * 1984-09-10 1986-04-07 Sony Corp Beam index type color television receiver
JPS6167382A (en) * 1984-09-10 1986-04-07 Sony Corp Beam index type color television receiver

Also Published As

Publication number Publication date
JPS6217918B2 (en) 1987-04-20

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