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drkohler said:

.. and gave us only a few technical details:

* 3D camera

* IR camera

......

Sorry but this reads nothing more than an advertising blurb prepared by MS and already the first two points make it clear whoever wrote this has no clue. The IR camera (if it is a TOF camera) IS the 3D camera. The 3D camera is the "Eyetoy part" of Natal and has nothing to do with 3D. Also we still don't know how Natal tracks 4 people (in a standard living room, not an empty cubicle) and what the performance penalty is on the XBox if "everything is set on" (many players, voice recognition on at the same time). A list of "we are working on it" just doesn't cut it (especially for developers who still don't seem to have a reasonable programming interface).

It is not a TOF camera. 

http://www.newscientist.com/commenting/browse?id=mg20527426.800&page=2

Kipman says: "Our IR does not pulse and it is not based on a TOF system (which usually pulses). Our light source is constant much like you would expect a projection system to work in a conference room."

 

For a comparable system, look at this link:

http://www.primesense.com/category/reference_design

Block Diagram

Specification
Property Spec
Field of View (Horizontal, Vertical, Diagonal) 58° H, 45° V, 70° D
Depth image size VGA (640x480)
Spatial x/y resolution (@ 2m distance from sensor) 3mm
Depth z resolution (@ 2m distance from sensor) 1cm
Maximum image throughput (frame rate) 60fps
Operation range 0.8m - 3.5m
Color image size UXGA (1600x1200)
Audio: built-in microphones Two mics
Audio: digital inputs Four inputs
Data interface USB 2.0
Power supply USB 2.0
Power consumption 2.25W
Dimensions (Width x Height x Depth) 14cm x 3.5cm x 5cm
Operation environment (every lighting condition) Indoor
Operating temperature 0°C - 40°C