Xerox Corporation

3d Systems, Inc.

Idealab

Clark Crawford

Karl A Ruiter

Jeffrey K Blank

Joseph Olivier

A communication device for use in an ad hoc network is disclosed. The device is adapted to concurrently (a) communicate directly with other network nodes, (b) communicate indirectly with other network nodes via intermediate network nodes, and (c) serve as an intermediate network node with respect to other network nodes indirectly communicating with one another. When implementing unicast communications, the communication device employs a CSMA protocol with which to identify and reserve available communication slots defined in accordance with a TDMA protocol without the use of a beacon signal. When implementing multicast communications, the communication device employs a stochastic re-transmission scheme that ensures widespread dissemination of messages with minimal flooding.

Ad hoc wireless communication system

A method of forming a three-dimensional object in a layerwise manner is disclosed. The object is formed in a manner-that substantially prevents non-uniform distortion to occur during the layerwise build process as the build material forming the object solidifies and shrinks. The formed object comprises an outer surface defined by a shell structure and an internal lattice structure residing within the internal volume of the object. The object may be formed by any selective deposition modeling apparatus from a wide variety of materials.

Selective deposition modeling build style providing enhanced dimensional accuracy

A compliant imaging surface for offset printing comprising a drum having an outer compliant elastomeric layer affixed to the drum, the outer compliant elastomeric layer being sufficiently compliant to contact ink pixels having at least first and second heights so as to fix the ink pixels to the final receiving medium. A second outer rigid layer is affixed to the outer compliant elastomeric layer and acts to keep pressure across a span of one pixel with the outer compliant elastomeric layer acting to allow deformation on the pixel to pixel span.

Growing community of inventors

Los Angeles, CA, United States of America

Clark Crawford