Graphics display unit
Patent 4094000 Issued on June 6, 1978. Estimated Expiration Date: 
June 6, 1995. 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.
June 6, 1995. 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 3634828 3895357 3905018 3909792 3911404 Data display terminal having data storage and transfer apparatus employing matrix notation addressing Gray scale display system employing digital encoding Patent #: 4009335 InventorAssigneeApplicationNo. 751138 filed on 12/16/1976US Classes:345/534, Memory access timing signals345/1.3, Tiling or modular adjacent displays345/535, Memory arbitration345/561, Logical operations345/564AddressingExaminersPrimary: Nusbaum, Mark E.Attorney, Agent or FirmInternational ClassG06F 003/14AbstractA display unit useful for displaying graphical information and specifically for composing items to be printed on a page. The display unit includes a dot matrix screen and a display memory for storing the information to be displayed. An addressing register identifies memory locations in a sequence starting at location established by a begin display register. The starting location is transferred to the addressing register each time the display unit reaches a first dot location in the display unit. If the starting location is changed, an image corresponding to the item stored in the memory moves on the screen as a unit. Two or more memories can be interconnected to enable a relative motion between images corresponding to the items stored in each display memory. | |
