| 7133534 |
Copy protection via redundant watermark encoding |
Michael Epstein |
2006-11-07 |
| 6986048 |
Protecting content from illicit reproduction by proof of existence of a complete data set using security identifiers |
Michael Epstein |
2006-01-10 |
| 5635683 |
Dynamic pressure adjustment of a pressure-sensitive pointing device for a digitizer |
Anthony M. Scialdone |
1997-06-03 |
| 5416280 |
Digitizer tablet using relative phase detection |
Daniel G. Lasley |
1995-05-16 |
| 5229551 |
Hysteresis compensation for a digitizer tablet |
Thomas Zalenski |
1993-07-20 |
| 5210380 |
Digitizer with serpentine-type conductor grid having uniform conductor repeat increments |
Paul D. Smith, Scott A. McDermott |
1993-05-11 |
| 5179254 |
Dynamic adjustment of filter weights for digital tablets |
— |
1993-01-12 |
| 5157227 |
Digitizer tablet with regional error correction |
Michael Bals |
1992-10-20 |
| 5111005 |
Graphics tablet with N-dimensional capability |
Paul D. Smith, Michael J. Padula |
1992-05-05 |
| 5051545 |
Digitizer with serpentine conductor grid having non-uniform repeat increment |
— |
1991-09-24 |
