Abstract: A background subtraction method and tilt stage device for eliminating contaminated or spurious interference patterns by reducing retrace errors. An optical reference surface secured in a pivoting mount coupled to a tilt actuator is configured to angularly displace the pivoting mount and optical reference surface. A microcontroller coupled to the tilt actuator controls the tilt displacement of the tilt actuator providing a plurality of wavefront measurements of the reference surface at a plurality of angles to provide a system and method for background measurement.

Abstract: A digital rights management system for wireless platforms. The system includes client software running on the wireless platform for publishing and/or viewing protected content. Enterprise server code is executed on a first server platform for sending and receiving protected content. An extension on the enterprise server code is included for detecting the presence of protected content, storing any such protected content in memory and substituting new content for the protected content for viewing on the wireless platform. A digital rights management server provides licenses for viewing the protected content on the wireless platform. A license proxy server is coupled to the wireless platform and the digital rights management server and communicates data therebetween. In the illustrative embodiment, the protected content is digitally rights managed email message. In more specific embodiments, a rights managed secure viewer and a secure publisher run on the wireless platform.

Abstract: A digital rights management system and method. The inventive system includes a client for publishing and/or viewing protected content; a DRM server for providing licenses for viewing the protected content; and an inventive license proxy server coupled between the client and the server. The license proxy server includes a digital rights management lockbox and plural digital rights management client certificates. The license proxy server is disposed on an operationally independent platform relative to the client or the DRM server and thereby extends a DRM vendor's rights management capabilities to other platforms.