DISPLAY DEVICE, PROJECTOR, AND DISPLAY METHOD

• US 20150029098A1
• Filed: 10/14/2014
• Published: 01/29/2015
• Est. Priority Date: 09/20/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Ichieda, Hiroyuki
• Granted Patent: US 9,746,940 B2
• Time in Patent Office: Days
• US Class Current: 345/157
• CPC Class Codes: G06F 3/033 Pointing devices displaced or positioned by the user , e.g. mice, trackballs, pens or joysticks; Accessories therefor digitisers characterised by the transducing means G06F3/041
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/0425 using a single imaging device like a video camera for tracking the absolute position of a single or a plurality of objects with respect to an imaged reference surface, e.g. video camera imaging a display or a projection screen, a table or a wall surface, on which a computer generated image is displayed or projected tracking a projected light spot to determine a position on a display surface G06F3/0386

Abstract

A display device include a display unit that displays a display image on a display surface based on image data, a location detection unit that detects a pointed location with respect to the display image on the display surface, a coordinate calculation unit that calculates first coordinates as coordinates of the pointed location in a displayable area within the display surface, a coordinate conversion unit that converts the first coordinates calculated by the coordinate calculation unit into second coordinates as coordinates in the image data, and an output unit that outputs the second coordinates obtained by the coordinate conversion unit.

Claims

1. A display device comprising:

a display unit that displays a display image on a display surface based on image data;

a location detection unit that detects a pointed location with respect to the display image on the display surface;

a coordinate calculation unit that calculates first coordinates as coordinates of the pointed location in a displayable area within the display surface;

a coordinate conversion unit that converts the first coordinates calculated by the coordinate calculation unit into second coordinates as coordinates in the image data; and

an output unit that outputs the second coordinates obtained by the coordinate conversion unit.