Display Peripheral Interface Input Device Patents (Class 345/156)
- Including impedance detection (Class 345/174)
- Including optical detection (Class 345/175)
- Transparent substrate having light entrapment capability (i.e., waveguides) (Class 345/176)
- Including surface acoustic detection (Class 345/177)
- With alignment or calibration capability (i.e., parallax problem) (Class 345/178)