Graphic display unit
Patent 4618859 Issued on October 21, 1986. Estimated Expiration Date: 
February 28, 2004. 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.
February 28, 2004. 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 ReferencesDigital raster display generator for moving displays Alpha-numeric-display system with selectable crawl Display system with multiple scrolling regions Patent #: 4412294 InventorAssigneeApplicationNo. 06/584360 filed on 02/28/1984US Classes:345/597ColorExaminersPrimary: Brigance, Gerald L.Assistant: Kovalick, Vincent E. Attorney, Agent or FirmInternational ClassG09G 5/34 (20060101)Foreign Application Priority Data1983-03-02 JPAbstractA graphic display unit having a shifting circuit for shifting a picture image to a designated position on or off a display panel, the shifting circuit including a signal delaying circuit for delaying a divided clock signal obtained by dividing a main clock signal and for delaying a display timing signal in accordance with the designated amount of shift of the picture image, whereby, in response to the delayed divided clock signal and the delayed display timing signal, the data of the picture image is read from a graphic random access memory. | |
