08681124 is referenced by 13 patents and cites 12 patents.

A system recognizes user-object gesture interactions with the surface of a monitor display, with hover space defined spaced-apart from the display surface, or in virtual scroll regions defined on the periphery of the monitor display. The system recognizes user-object interactions, e.g., gestures, and can affect what is displayed commensurately. The system includes at least a first time-of-flight (TOF) system and at least one of a second TOF, a two-dimensional camera, and a mirror, each TOF system processing at least one of z-depth data and A-brightness data. User-object interactions, e.g., touching(s) of the display surface, location(s) in a hover region, or location(s) in a virtual scroll region, are recognized passively in that the user-object need not have capacitance, resistance, exert force, or deform during gesture interaction. The system may be attached retroactively to the monitor, which may be a large (>22 cm) monitor, or a small cell phone sized monitor.

Title
Method and system for recognition of user gesture interaction with passive surface video displays
Application Number
12/586432
Publication Number
8681124 (B2)
Application Date
September 22, 2009
Publication Date
March 25, 2014
Inventor
Sunil Acharya
San Jose
CA, US
Cyrus Bamji
Fremont
CA, US
Agent
Micky Minhas
Leonard Smith
Judy Yee
Assignee
Microsoft Corporation
WA, US
IPC
G06F 3/042
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