Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868670 | Apparatus and method for improving the compressibility of an enhanced image through use of a momentarily varying threshold level | John E. Redden | 1989-09-19 |
| 4853795 | Forward look ahead techniques for tracking background and noise levels in scanned video images | Scott W. Lewis | 1989-08-01 |
| 4833722 | Apparatus and methods for locating edges and document boundaries in video scan lines | John E. Redden | 1989-05-23 |