Cornelius James Starkey

US Patent:

47572396, Jul 12, 1988

Filed:

Oct 18, 1985

Appl. No.:

6/789107

Inventors:

Cornelius J. Starkey - Lexington KY

Assignee:

Hilliard-Lyons Patent Management, Inc. - Louisville KY

International Classification:

H01J 2956

US Classification:

315371

Abstract:

Disclosed are systems and techniques for alignment of CRT-based display systems, particularly those employing a high resolution cathodochromic projection CRT. The disclosed techniques permit all major CRT-related alignment to be performed at a factory or other centralized facility, with automatic precision alignment in the field of the overall display system, including a CRT assembly as one element. A replaceable, standardized CRT subsystem includes a CRT assembly, itself subject to sample variations, and a non-volatile personality memory, such as an EEPROM, having stored parameters specifically applicable to the CRT assembly on an individual basis. The CRT assembly has no field adjustable parts, but does include elements for electron beam control, such as electromagnetic coils for focus and deflection permanently affixed to the CRT. Thus at the factory, a skilled operator having appropriate equipment available performs an electronic alignment procedure with reference to a particular CRT. In the case of a projection display system, the CRT is mounted during alignment within an optical projection system which represents a standardized optical configuration, identical to the optical configuration in which the CRT will be operated in the field.

US Patent:

47758597, Oct 4, 1988

Filed:

Oct 18, 1985

Appl. No.:

6/788838

Inventors:

Cornelius J. Starkey - Lexington KY
Hubbard B. T. Spencer - Lexington KY
Thomas J. McSorley - Lexington KY
James P. Galvin - Lexington KY

Assignee:

Hilliard-Lyons Patent Management, Inc. - Louisville KY

International Classification:

G09G 104

US Classification:

340732

Abstract:

Disclosed are systems and techniques for image generation applicable in general to any long persistence display device, particularly one in which contrast builds over a number of frames. The display device disclosed in detail by way of example herein is a high resolution cathodochromic CRT (CCRT) in a projection system. The system includes a deflection generator for the display device capable of writing to at least individual image lines in any order and, in some embodiments, to individually-addressed pixels. In raster-scanned embodiments, an image memory is included, capable of storing pixel data on a line-by-line basis. An image controller serves to read particular lines from the image memory and to write corresponding image lines on the display device. In one embodiment, those scan lines which have no picture information (e. g. all white lines in the case of a CCRT) are skipped as lines are read from the image memory and written to the display device, substantially increasing the frame refresh rate in the time-critical operation of writing to a CCRT.