Abstract: A method for graphically indicating presence, identity, and action with respect to a media post transmitted by a client device and displayed on a shared display. Metadata indicating the identity of a user is logically associated with visual media to form a media stream, which is transmitted to the shared display. The transmitted media stream is then decoded to recover the transmitted metadata. The media post is displayed on the shared display and the presence of a client device media stream, the identity of the current user of the device generating the stream, and an action associated with the user interaction with the client device, is then graphically indicated on the display, using the recovered metadata.

Abstract: A method for graphically indicating presence, identity, and action with respect to a media post transmitted by a client device and displayed on a shared display. Metadata indicating the identity of a user is logically associated with visual media to form a media stream, which is transmitted to the shared display. The transmitted media stream is then decoded to recover the transmitted metadata. The media post is displayed on the shared display and the presence of a client device media stream, the identity of the current user of the device generating the stream, and an action associated with the user interaction with the client device, is then graphically indicated on the display, using the recovered metadata.

Abstract: A system and method for display device access management. An alphanumeric key is generated and displayed on a display device. The key is entered into the system by a user within sight of the display device and authenticated by the system. Media sent to the display device by the user is then displayed on the display device.

Abstract: A surveillance system having a plurality of MPEG compressed data streams each originating from a separate video/audio source. The data is stored on hard disk and streamed to tape in real time. The data is partitioned on the tape into about ten partitions, each partition including a plurality of data blocks, each data block including synchronized frames from each stream, a stream map, telemetry information, roster information, and tape positioning data. Each partition includes a duplicate stream map and a duplicate partition directory, and each block within the partition includes duplicate telemetry information. Set marks readable in fast forward or rewind mode are placed every second on the tape in a position just before the duplicate telemetry, and a file mark is placed just before the duplication partition directory. The tape cassette includes an EEPROM which holds a duplicate partition directory. The originating disk also includes a duplicate partition directory.

Abstract: A video surveillance system in which the compressed video is written to a digital tape cassette. The tape cassette includes an EEPROM, which holds directory information relating to the location of particular video on the tape, the identity of the tape, the identity of the video, and other key information relating to the video. The directory on the EEPROM permits rapid access to the video and redundancy of key data. In case of tape error, the tape automatically restores itself when inserted into the tape deck.

Abstract: A surveillance system having a plurality of MPEG compressed data streams each originating from a separate video/audio source. The data is stored on hard disk and streamed to tape in real time with time set markers readable independent of the compressed video signal. The data is partitioned on the tape, each partition including a plurality of data blocks, each data block including synchronized frames from each stream, a stream map, telemetry information, roster information and tape positioning data. Each partition includes a duplicate stream map and a duplicate partition directory, and each block within the partition includes duplicate telemetry information. Set marks readable in fast forward or rewind mode, are placed every second on the tape in a position just before the duplicate telemetry and a file mark is placed just before the duplication partition directory. The tape cassette includes an EEPROM, which holds a duplicate partition directory and redundant directory information useful for searching.

Abstract: A surveillance system having a plurality of MPEG compressed data streams each originating from a separate video/audio source. The data is streamed onto a plurality of media of different type in real time. The plurality of media are selected from the group consisting of: a digital tape, a hard disk, a semiconductor memory, a CVD, a DVD, and an optical disk. The system generates directory information which is also stored on a plurality of different media.