Enhanced projected image interface

摘要

An interactive display projection system, includes a pointing device which determines a location on the projected display indicated by the pointing device using a combination of a location signal in the display captured by the pointing device and optical mouse circuitry to determine motion of the pointing device when the pointing device is close to the projected display. In another embodiment, the pointing device also includes an inertial sensor and associated circuitry which detects linear accelerations and rotational rates to determine motion and orientation of the pointing device, which are also used to determine the location on the projected display indicated by the pointing device.

主权项

1. An interactive image display projection system, comprising:
a projector for displaying an image including a location signal from a remote location onto a target display surface; a pointing device, the pointing device including:
a displayed location signal sensor for detecting the displayed location signal;first signal processing circuitry coupled to the displayed location signal sensor for providing location information based on the detected location signal;an emitter for emitting an optical signal from close proximity onto the target display surface;a detector for detecting reflection of the emitted optical signal when the pointing device is within the close proximity;second signal processing circuitry coupled to the detector for providing information on relative motion of the pointing device based on the detected reflection; andtransmitting circuitry coupled to the first signal processing circuitry and the second signal processing circuitry for transmitting to the projector at least one of a) the location information and relative motion information or b) information derived from the location information and relative motion information; and pointer location computation circuitry for determining a point on the image pointed to by the pointing device, the point determined from the location information and relative motion information.