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CRT display having a single plane sheath beam bender and video correction

An electron beam, single-plane technology, applied in static indicators, cathode ray tube indicators, solid thermionic cathodes of discharge tubes, etc., can solve problems such as beam spot distortion

Inactive Publication Date: 2008-08-27
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Orient the electron gun along the vertical or secondary axis, this will improve the self-converging system, but the problem of beam spot distortion at the 3 / 9 position and the corner screen position still exists
[0015] Another problem that current CRTs have involves the overall length of the CRT

Method used

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  • CRT display having a single plane sheath beam bender and video correction
  • CRT display having a single plane sheath beam bender and video correction
  • CRT display having a single plane sheath beam bender and video correction

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Embodiment Construction

[0038] The present invention relates to a cathode ray tube (CRT) display having a single plane sheath beam bender (SBB) and video correction. The invention can be used in analog or digital standard definition television as well as high definition television (HDTV). Additionally, the invention can be used with televisions operating in standard horizontal scan mode or vertical scan mode.

[0039] The SBB according to the invention eliminates prior art equipment in multiple planes. While this SBB cancellation also eliminates the ability of the SBB to correct for the typical convergence error (called blue-bow), the video correction capability of the CRT system according to the present invention provides for correcting the blue-bow Means of convergence error. Thus, the overall CRT system according to the present invention provides a shorter length (ie, shorter depth) system while still correcting for blue bow convergence errors. Furthermore, another advantage is the simplificati...

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PUM

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Abstract

There are provided CRT display systems. A CRT display system includes an electron gun assembly, a single plane sheath beam bender, and a digital processor (110, 120, 130). The electron gun assembly is configured to emit electron beams. The single plane sheath beam bender is configured to apply a deflection force to the electron beams. The digital processor (110, 120, 130) is configured to receive and process an incoming video signal stream to provide signals there from to be delivered to individual cathodes of the electron gun assembly. The provided signals have a distortion applied thereto to effect a predetermined converged image. The applied distortion at least relates to a blue-bow convergence error.

Description

[0001] Cross References to Related Applications [0002] This application is a non-provisional application claiming priority to provisional application Serial No. US60 / 713,142, filed August 31, 2005, entitled "AVERTICAL SCAN HDTV CRT DISPLAY HAVING A SINGLE PLANESHEATH BEAM BENDER AND VIDEO CORRECTION," which is incorporated by reference here. Additionally, this application is related to the following application: U.S. Patent Application, Attorney Docket No. PU050212, entitled "METHOD FOR REDUCED SHEATH BEAM BENDER WIDTH ANDVIDEO CORRECTION IN A CRT DISPLAY," filed concurrently and incorporated by reference here. technical field [0003] The present invention relates to a cathode ray tube (CRT) display with a single plane electron beam bender and video correction. Background technique [0004] With the spread of HDTV, the demand for televisions capable of displaying HDTV images has also increased. Concomitant with these advances, there is an increasing demand for larger a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J1/24H01J29/56G09G1/08
CPCH01J29/76H04N9/28
Inventor 理查德·休·密勒
Owner THOMSON LICENSING SA
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