Abstract: Techniques for receiving information during multimedia presentations and for communicating the received information to one or more information access devices. A presentation recorder adapter receives information during a multimedia presentation and communicates the information to access devices. The adapter may receive multimedia presentation information, comprising video information and audio information, from a first source. The adapter may also receive information from a second source separate from the first source during the multimedia presentation. For example, the second source may be an attendee of the multimedia presentation. The adapter may transmit the multimedia presentation information received from the first source and the information received from the second source to one or more information access devices.

Abstract: An apparatus and method for determining if a query document matches one or more of a plurality of documents in a database. In a coarse matching stage, a compressed file or other query document is scanned to produce a bit profile. Global statistics such as line spacing and text height are calculated from the bit profile and used to narrow the field of documents to be searched in an image database. The bit profile is cross-correlated with bit profiles of documents in the search space to identify candidates for a detailed matching stage. If multiple candidates are generated in the coarse matching stage, a set of endpoint features is extracted from the query document for detailed matching in the detailed matching stage. Endpoint features contain sufficient information for various levels of processing, including page skew and orientation estimation.

Abstract: Techniques for capturing information during multimedia presentations. According to an embodiment, the presentation recording appliance (PRA) receives multimedia presentation information comprising video information and/or audio information. The PRA may also receive information from external sources other than the first source. The audio and video information received by the PRA is then processed and stored in a format which facilitates subsequent retrieval.