Light pen controlled method and equipment for evaluating fluorescent screen pictures
July 26, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3441667 3662373 Light pen detection system Multi-color video display systems using more than one signal source Method and apparatus for displaying radar video registered with computer generated data on a television monitor Apparatus and method for automatic coloration and/or shading of images Alphanumeric terminal having an optoelectric converter and an associated mono-pulse generating circuit System and method for painting images by synthetic color signal generation and control Color display apparatus Patent #: 4232311 InventorApplicationNo. 06/108647 filed on 12/31/1979US Classes:345/180, Light pen for CRT display345/13Data responsive deflection controlExaminersPrimary: Curtis, Marshall M.Attorney, Agent or FirmInternational ClassesG01S 7/52 (20060101)G06F 3/033 (20060101) Foreign Application Priority Data1979-01-31 ATAbstractA light pen directed toward an area of a fluorescent screen controls a pulse generator, which causes said area to be brightened and also causes a defined target mark to be displayed. The coordinates of the target mark may be ascertained from the instantaneous deflecting voltages which control the electron beam and may be indicated or stored or supplied to a computer for evaluation. In such computer, the coordinates of a plurality of target marks may be used to ascertain the length of curves and contours or the areas of regions which have been circumscribed with the light pen. Various possible uses and methods of evaluation are described as well as equipment for carrying out the method. | |
