Abstract: Apparatus for use in display systems are disclosed. In certain implementations, a display apparatus includes a light guide plate for use in a liquid crystal display backlight system. In other implementations, an apparatus for use in a projection display is disclosed including a substantially transparent rectangular prism. In implementations including laser-based light sources, the light guide plate or substantially transparent rectangular prism is configured to reduce the spatial coherence of laser light introduced thereto, thereby reducing speckle. The light guide or prism includes a plurality of light scattering particles suspended therein; alternatively the light guide or prism has a set of scratches on a surface thereof, rending the surface substantially opaque.

Abstract: A DRM system is provided wherein a policy can be established such that the DRM system controls access to a protected content unit, wherein the policy evaluates a condition so that the DRM system adaptively varies the actions that a user is authorized to perform with the protected content unit in response to changes in the condition. The techniques described herein enable a protection level for a protected content unit to be varied in response to changes in one or more condition, such as environmental conditions and/or an historical usage conditions. The techniques described herein also enable a set of policies to be established for a DRM system such that the DRM system controls access to multiple protected content units in accordance with the set of policies. Pursuant to these policies, the DRM system can adaptively vary access to multiple protected content units in response to one or more conditions.

Abstract: An object classification system is provided that receives, from a user, at least one piece of information relating to the object, wherein the information does not directly specify a classification for the object, and that applies at least one rule that classifies the object based, at least in part, on the at least one piece of information received from the user. The techniques described herein also enable classifying an object by, in response to a request from at least one application to access the object, applying at least one rule that dynamically classifies the object.

Abstract: An object classification system is provided that receives, from a user, at least one piece of information relating to the object, wherein the information does not directly specify a classification for the object, and that applies at least one rule that classifies the object based, at least in part, on the at least one piece of information received from the user. The techniques described herein also enable classifying an object by, in response to a request from at least one application to access the object, applying at least one rule that dynamically classifies the object.

Abstract: A method of controlling distribution of a segment of encrypted electronic information is presented. A key server receives a protected copy of a decryption key for the segment. The segment is retrieved at a user location. The protected copy of the decryption key is accessed. In response to the accessing, the segment is decrypted using the accessed copy of the decryption key at the user location. The accessed copy of the decryption key is destroyed at the user location in response to the decrypting. The decrypted segment is displayed in response to the decrypting. The decrypted segment is destroyed in response to the displaying.

Abstract: A method of controlling distribution of a segment of encrypted electronic information is presented. A key server receives a protected copy of a decryption key for the segment The segment is retrieved at a user location. The protected copy of the decryption key is accessed. In response to the accessing, the segment is decrypted using the accessed copy of the decryption key at the user location. The accessed copy of the decryption key is destroyed at the user location in response to the decrypting. The decrypted segment is displayed in response to the decrypting. The decrypted segment is destroyed in response to the displaying.

Abstract: A plate holder for a plate surface inspection system, the plate holder including a plate holder body and a calibration plate integral with the plate holder body thereby eliminating the need to load a separate special calibration plate in the plate holder each time the surface inspection system needs to be calibrated.