G06F 3/0321
By optically sensing the absolute position with respect to a regularly patterned
Official title: {by optically sensing the absolute position with respect to a regularly patterned surface forming a passive digitiser, e.g. pen optically detecting position indicative tags printed on a paper sheet (constructional details of pen-shaped pointing devices G06F3/03545, G06F3/03542, G06F3/037)}
G06F3/0321 (By optically sensing the absolute position with respect to a regularly patterned) appears on 1,028 US grants and 1,224 published applications in this corpus.
Search patents in G06F- Granted patents
- 1,028
- Published applications
- 1,224
- Assignees
- 222
- Inventors
- 1,051
- Latest grant
- 15 Sep 2026
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| 2023 | 19 | 27 |
| 2024 | 21 | 8 |
| 2025 | 6 | 4 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Absolute optical position determination1,082US 5,852,434 A1998
- Optical position determination1,046US 5,477,012 A1995
- Optical stylus and passive digitizing tablet data input system1,000US 5,051,736 AInternational Business Machines Corporation · 1991
- Pen and paper information recording system982US 5,652,412 ASIA Technology Corporation · 1997
- Control interface facility management system847US 10,034,344 B22018