Issued Patents All Time
Showing 25 most recent of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6987583 | Color difference hue control system | Robert D. Altmanshofer | 2006-01-17 |
| 6424324 | Display driver apparatus | Charles M. White | 2002-07-23 |
| 6141058 | Television receiver having a user-editable telephone system caller-ID feature | Robert Lawrence O'Brien, Dennis R. McCarthy | 2000-10-31 |
| 5847773 | Video system including apparatus for deactivating an automatic control arrangement | Robert Lawrence O'Brien | 1998-12-08 |
| 5629776 | Apparatus for use in a VCR or laserdisc player for providing a signal indicative of the reproduction of wide-screen picture | — | 1997-05-13 |
| 5448311 | Tri-state video differential driver | Charles M. White | 1995-09-05 |
| 5436667 | Multi-input television receiver with combined clamping and synchronizing signal separation circuit | Enrique Rodriguez-Cavazos, Karl R. Koblitz | 1995-07-25 |
| 5422680 | Non-linear contrast control apparatus with pixel distribution measurement for video display system | Albert P. Pica, James R. Bergen, Todd J. Christopher | 1995-06-06 |
| 5343255 | Video processing circuit with IF AGC loop, auxiliary video clamp and shared reference voltage source formed on common integrated circuit | — | 1994-08-30 |
| 5339114 | Television receiver with luminance signal clamped offset and re-clamped prior to contrast control for preventing black level changes with contrast control changes when displaying luminance signals having elevated black level | Ronald Keen, Charles B. Neal | 1994-08-16 |
| 5339115 | Variable bandwidth luminance filter with commonly tuned delay and amplitude controlling filters providing frequency independent and bandwidth independent delay characteristic | — | 1994-08-16 |
| 5317400 | Non-linear customer contrast control for a color television with autopix | Thomas D. Gurley | 1994-05-31 |
| 5298982 | Television receiver with switchable chrominance signal filter | — | 1994-03-29 |
| 5272522 | Video signal processing circuits | — | 1993-12-21 |
| 5237398 | Color difference signal matrix and buffer circuit for television apparatus | Ronald Keen, Robert Lawrence O'Brien | 1993-08-17 |
| 5210606 | Apparatus for correcting distorted sync in a composite video signal | Roger L. Lineberry | 1993-05-11 |
| 5204748 | Beam current limiting arrangement for a television system with picture-in-picture provisions | — | 1993-04-20 |
| 5200829 | Contrast beam current limiting arrangement with secondary brightness beam current limiting provisions | — | 1993-04-06 |
| 5191420 | "Video system with feedback controlled ""white stretch"" processing and brightness compensation" | Robert Lawrence O'Brien | 1993-03-02 |
| 5162902 | Non-linear luminance signal processor responsive to average picture level (APL) of displayed image | Isaac M. Bell | 1992-11-10 |
| 5162909 | Television signal processing circuits | Roger L. Lineberry | 1992-11-10 |
| 5099154 | Amplifier arrangement for producing a controllable non-linear transfer characteristic useful for improving the contrast of an image | — | 1992-03-24 |
| 5003394 | "Dynamic video system including automatic contrast and ""white-stretch"" processing sections" | — | 1991-03-26 |
| 4982287 | Control of brightness level adapted to control of contrast | — | 1991-01-01 |
| 4980756 | Control signal generator for a television system | — | 1990-12-25 |