| US 7,573,466 B1 | ||
| Method and apparatus for data entry for a liquid crystal display | ||
| Vincent P. Marzen, Robins, Iowa (US); Albert N. Stuppi, Springville, Iowa (US); Gary D. Bishop, Marion, Iowa (US); Birendra Bahadur, Cedar Rapids, Iowa (US); and Michael R. Jones, Cedar Rapids, Iowa (US) | ||
| Assigned to Rockwell Collins, Inc., Cedar Rapids, Iowa (US) | ||
| Filed on Sep. 17, 2003, as Appl. No. 10/664,214. | ||
| Int. Cl. G06F 3/043 (2006.01) | ||
| U.S. Cl. 345—177 [178/18.04; 367/113] | 20 Claims |
| 1. A touch screen display apparatus comprising:
a liquid crystal panel having a viewing area with a periphery;
a plurality of shockwave detectors, disposed about said periphery; and
said plurality of shockwave detectors configured to use a time of arrival of a tap-generated shockwave to determine a point
of origin of the tap-generated shockwave in the liquid crystal panel which results from a touch occurring at said point of
origin.
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