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| Number | Title | Issue Date |
| 4860311 | Method and apparatus for automatically converting input pulse train signals to output signals of desired polarity A method and apparatus for sensing the polarity of an input pulse train signal and for automatically changing its polarity as required by the circuit to which it will be applied, is disclosed. The polarity of the input pulse train signal is determined by ... | 08/22/1989 |
| 4650349 | Speed typing apparatus and method A speed typing method and apparatus for use in association with a word processor (5) are disclosed. An encoded Key (40) of alphanumeric characters and its associated Replacement Text (41) are pre-stored (50-67) in Memory (12). Operator entries to the proc... | 03/17/1987 |
| 4353013 | Drive circuits for a high resolutions cathode ray tube display A dynamic new circuit is disclosed which permits an extremely high resolution cathode ray tube display. Utilizing this circuit, horizontal drive operating frequency may be increased by a factor of approximately four and video drive operating frequency may... | 10/05/1982 |
| 4323826 | Drive circuits for a high resolution cathode ray tube display A dynamic new circuit is disclosed which permits an extremely high resolution cathode ray tube display. Utilizing this circuit, horizontal drive operating frequency may be increased by a factor of approximately four and video drive operating frequency may... | 04/06/1982 |
| 4238774 | Drive circuits for a high resolution cathode ray tube display A dynamic new circuit is disclosed which permits an extremely high resolution cathode ray tube display. Utilizing this circuit, horizontal drive operating frequency may be increased by a factor of approximately four and video drive operating frequency may... | 12/09/1980 |
