238000004364 calculation method Methods 0.000 claims description 2 A color cathode ray tube display apparatus particularly for use under a wide range of ambient light conditions, such as in an aircraft cockpit, wherein each of the primary color phosphors has a unique brightness versus cathode drive characteristic, which characteristic also is dependent upon whether the displayed information is raster written or stroke written and wherein such characteristics.230000001419 dependent Effects 0.000 claims abstract description 10.230000000875 corresponding Effects 0.000 claims abstract description 14.Assignors: UNISYS CORPORATION Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Assignors: SPERRY CORPORATION, SPERRY HOLDING COMPANY, INC., SPERRY RAND CORPORATION Assigned to HONEYWELL INC. reassignment SP-COMMERCIAL FLIGHT, INC., A DE CORP. Application granted granted Critical Publication of US4386345A publication Critical patent/US4386345A/en Assigned to SP-COMMERCIAL FLIGHT, INC., A DE CORP. Assignors: CLARK, ROBERT W., HANNERT, LAWRENCE C., NARVESON, PARM L. reassignment SPERRY CORPORATION, A CORP.OF DE. 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 Sperry Corp filed Critical Sperry Corp Priority to US06/304,451 priority Critical patent/US4386345A/en Assigned to SPERRY CORPORATION, A CORP.OF DE. Original Assignee Sperry 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 or warranty as to the accuracy of the list.) Hannert Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US06/304,451 Inventor Parm L. Google Patents Color and brightness tracking in a cathode ray tube display systemÄownload PDF Info Publication number US4386345A US4386345A US06/304,451 US30445181A US4386345A US 4386345 A US4386345 A US 4386345A US 30445181 A US30445181 A US 30445181A US 4386345 A US4386345 A US 4386345A Authority US United States Prior art keywords brightness ambient light cathode color colors Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4386345A - Color and brightness tracking in a cathode ray tube display system US4386345A - Color and brightness tracking in a cathode ray tube display system
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