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JPS5564349A - Beam index type cathode ray tube - Google Patents

Beam index type cathode ray tube

Info

Publication number
JPS5564349A
JPS5564349A JP13772078A JP13772078A JPS5564349A JP S5564349 A JPS5564349 A JP S5564349A JP 13772078 A JP13772078 A JP 13772078A JP 13772078 A JP13772078 A JP 13772078A JP S5564349 A JPS5564349 A JP S5564349A
Authority
JP
Japan
Prior art keywords
index
width
ray tube
cathode ray
beam 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
JP13772078A
Other languages
Japanese (ja)
Inventor
Akio Ogoshi
Takashi Toyama
Hiroshi Ozeki
Tatsuo Izu
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 JP13772078A priority Critical patent/JPS5564349A/en
Publication of JPS5564349A publication Critical patent/JPS5564349A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00—Cathode ray tubes or electron beam tubes
    • H01J2231/12—CRTs having luminescent screens
    • H01J2231/121—Means for indicating the position of the beam, e.g. beam indexing

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE: To eliminate the color shift by increasing the substantial width of circumferentical index stripe thereby increasing the index signal output.
CONSTITUTION: The width of index stripe 9 at central portion of fluorescent face 6 is selected to be Wc=0.25P(312 system) similarly with conventional index tube, while at the circumference it is selected to be P<Ws<0.5P. In other word the ratio between the width B of non-light emitting portion due to guard band 7 and the width of light emitting portion H due to fluorescent member stripes R, G, B is selected to be 0.5<B/H<1. Since the substantial width of index stripe 9 is increased, the index signal output is increased thereby the lowering of signal amount due to spot distorsion at the circumference can be compensated. Consequently the color shift due to the lowering of signal amount can be eliminated.
COPYRIGHT: (C)1980,JPO&Japio
JP13772078A 1978-11-08 1978-11-08 Beam index type cathode ray tube Pending JPS5564349A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13772078A JPS5564349A (en) 1978-11-08 1978-11-08 Beam index type cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13772078A JPS5564349A (en) 1978-11-08 1978-11-08 Beam index type cathode ray tube

Publications (1)

Publication Number Publication Date
JPS5564349A true JPS5564349A (en) 1980-05-15

Family

ID=15205242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13772078A Pending JPS5564349A (en) 1978-11-08 1978-11-08 Beam index type cathode ray tube

Country Status (1)

Country Link
JP (1) JPS5564349A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021628A1 (en) * 2001-09-06 2003-03-13 Koninklijke Philips Electronics N.V. Tracking tube with adapted tracking structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021628A1 (en) * 2001-09-06 2003-03-13 Koninklijke Philips Electronics N.V. Tracking tube with adapted tracking structure

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