Nondestructive cursors in AC plasma displays
Patent 4063223 Issued on December 13, 1977. Estimated Expiration Date: 
December 13, 1994. 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, 1994. 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 3559190 3662352 Gas panel with improved write circuit and operation Patent #: 3969715 InventorsApplicationNo. 05/713567 filed on 08/11/1976US Classes:365/116, Plasma345/60Fluid light emitter (e.g., gas, liquid, or plasma)ExaminersPrimary: Fears, Terrell W.Attorney, Agent or FirmAbstractA nondestructive, transparent cursor for AC plasma displays may be superimposed electronically over a displayed image without regenerating the original image each time the cursor is moved. The cursor is displayed by means of a special cursor drive waveform which discharges both previously "on" and "off" cells which form the cursor but permits reversion of the cells to their original state when the cursor drive waveform is removed and the normal sustaining waveform is restored. | |
