Invention Grant
- Patent Title: Interactive wireless tag location and identification system
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Application No.: US10883235Application Date: 2004-07-01
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Publication No.: US07154395B2Publication Date: 2006-12-26
- Inventor: Ramesh Raskar , Paul A. Beardsley , Jeroen van Baar , Paul H. Dietz
- Applicant: Ramesh Raskar , Paul A. Beardsley , Jeroen van Baar , Paul H. Dietz
- Applicant Address: US MA Cambridge
- Assignee: Mitsubishi Electric Research Laboratories, Inc.
- Current Assignee: Mitsubishi Electric Research Laboratories, Inc.
- Current Assignee Address: US MA Cambridge
- Agent Dirk Brinkman; Clifton D. Mueller; Gene V. Vinokur
- Main IPC: G08B1/08
- IPC: G08B1/08
Abstract:
A wireless location and identification system includes a controller and a tag. The controller has a projector configured to generate a unique temporal sequence of light intensities for each pixel in an output image of the projector and a wireless transceiver configured to emit an output signal and receive an input signal. The tag includes a photo-sensor configured to sense the unique temporal sequence of light intensities of a particular pixel, a transducer configured to receive the output signal from the transceiver, and a means for modulating, according to the unique temporal sequence of light intensities, the input signal for the transceiver in response to receiving the output signal and sensing the unique temporal sequence of light intensities of the particular pixel to indicate a location of the tag to the controller.
Public/Granted literature
- US20060001543A1 Interactive wireless tag location and identification system Public/Granted day:2006-01-05
Information query
