CA2072191A1 - Display apparatus - Google Patents

Display apparatus

Info

Publication number
CA2072191A1
CA2072191A1 CA 2072191 CA2072191A CA2072191A1 CA 2072191 A1 CA2072191 A1 CA 2072191A1 CA 2072191 CA2072191 CA 2072191 CA 2072191 A CA2072191 A CA 2072191A CA 2072191 A1 CA2072191 A1 CA 2072191A1
Authority
CA
Canada
Prior art keywords
electron beam
signals
beam shaped
crt
display apparatus
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
CA 2072191
Other languages
French (fr)
Other versions
CA2072191C (en
Inventor
Kozo Tateishi
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
Individual
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
Priority claimed from JP3154437A external-priority patent/JP2822694B2/en
Priority claimed from JP3336537A external-priority patent/JP3057864B2/en
Application filed by Individual filed Critical Individual
Publication of CA2072191A1 publication Critical patent/CA2072191A1/en
Application granted granted Critical
Publication of CA2072191C publication Critical patent/CA2072191C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

A display apparatus in which the focus shift and astigmatism of the electron beam caused in the CRT and its vicinity portion are reduced. Picture scenes of higher fidelity, higher acuteness and higher resolution can be obtained. In the electron beam shaped control circuit, signals corresponding to a high-pass component, a brightness component in the image signals from the horizontal direction electron beam shaped detection deciding portion, and signals corresponding to the low-pass component in the image signals from the vertical direction electron beam shaped detection deciding portion are composed. Composite signals of parabolic waves are obtained by a driving voltage generating portion so as to apply the output to the auxiliary acceleration focusing electrode of the CRT.
CA 2072191 1991-06-26 1992-06-23 Display apparatus Expired - Fee Related CA2072191C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3154437A JP2822694B2 (en) 1991-06-26 1991-06-26 Display device
JP3-154437 1991-06-26
JP3-336537 1991-12-19
JP3336537A JP3057864B2 (en) 1991-12-19 1991-12-19 Display device

Publications (2)

Publication Number Publication Date
CA2072191A1 true CA2072191A1 (en) 1992-12-27
CA2072191C CA2072191C (en) 1999-01-12

Family

ID=26482715

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2072191 Expired - Fee Related CA2072191C (en) 1991-06-26 1992-06-23 Display apparatus

Country Status (1)

Country Link
CA (1) CA2072191C (en)

Also Published As

Publication number Publication date
CA2072191C (en) 1999-01-12

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed