CRT Display apparatus with changeable cursor indicia
Patent 4228430 Issued on October 14, 1980. Estimated Expiration Date: 
December 13, 1997. 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.
December 13, 1997. 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 3531796 3573855 3911419 Display apparatus having improved cursor enhancement Light pen detection system Random access memory apparatus for a waveform measuring apparatus Patent #: 4093995 InventorsApplicationNo. 05/860117 filed on 12/13/1977US Classes:345/162, Positional storage means345/157Cursor mark position control deviceExaminersPrimary: Curtis, Marshall M.Attorney, Agent or FirmInternational ClassesG09G 5/30 (20060101)G09G 5/08 (20060101) Foreign Application Priority Data1976-12-17 JPAbstractDisclosed is a raster scanning type CRT display apparatus having a microprogrammed processor for primarily controlling the input and output of data to and from an external information source. This CRT display apparatus comprises a plurality of cursor controlling registers having their contents set by the processor. The contents of these registers define the configuration of a cursor for displaying a data entry position on its screen, the decision with respect to the blinking of the cursor, and a period of the blinking.Other References
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