Patent ID: 8937612
Filing Date: 2015-01-20
Classification: G06F

Abstract:
1. A coordinate locating device for a display apparatus, comprising: a first detector arranged together with a first light source at a first corner of the coordinate locating device; a second detector arranged together with a second light source at a second corner of the coordinate locating device; a mirror arranged on a first edge of the coordinate locating device, configured to reflect mirrored images of two or more objects intruding the coordinate locating device; a reflector arranged on the middle of the first edge of the coordinate locating device, the reflector arranged on the mirror and configured to retro-reflect light from the first and second light sources; and at least one reflector, arranged on other edges of the coordinate locating device, configured to retro-reflect light from the first and second light sources; wherein the first and second detectors detect real images of the two or more objects, and at least one of the first and second detectors further detects the mirrored images of the two or more objects reflected by the mirror; wherein the position of the two or more objects are determined according to the detected real images and mirrored images of the two or more objects.