Invention Grant
- Patent Title: Intra-frame control of projector on-off states
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Application No.: US14571266Application Date: 2014-12-15
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Publication No.: US09961315B2Publication Date: 2018-05-01
- Inventor: Sasa Junuzovic , William Thomas Blank , Steven Bathiche , Anoop Gupta , Andrew D. Wilson
- Applicant: Microsoft Technology Licensing, LLC
- Applicant Address: US WA Redmond
- Assignee: Microsoft Technology Licensing, LLC
- Current Assignee: Microsoft Technology Licensing, LLC
- Current Assignee Address: US WA Redmond
- Agency: Lyon & Harr, LLP
- Agent Mark A. Watson
- Main IPC: H04N9/31
- IPC: H04N9/31 ; G03B15/05 ; G03B17/54 ; H04N5/225 ; H04N5/247 ; H04N13/02 ; H04N7/14 ; G06F3/042 ; G06F3/00 ; H04L12/18 ; H04N5/33

Abstract:
A “Concurrent Projector-Camera” uses an image projection device in combination with one or more cameras to enable various techniques that provide visually flicker-free projection of images or video, while real-time image or video capture is occurring in that same space. The Concurrent Projector-Camera provides this projection in a manner that eliminates video feedback into the real-time image or video capture. More specifically, the Concurrent Projector-Camera dynamically synchronizes a combination of projector lighting (or light-control points) on-state temporal compression in combination with on-state temporal shifting during each image frame projection to open a “capture time slot” for image capture during which no image is being projected. This capture time slot represents a tradeoff between image capture time and decreased brightness of the projected image. Examples of image projection devices include LED-LCD based projection devices, DLP-based projection devices using LED or laser illumination in combination with micromirror arrays, etc.
Public/Granted literature
- US20150097928A1 INTRA-FRAME CONTROL OF PROJECTOR ON-OFF STATES Public/Granted day:2015-04-09
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