Robust surveillance system with partitioned media
First Claim
1. A video surveillance method comprising:
- generating a video signal containing surveillance images;
electronically compressing said video signal into a compressed video signal; and
recording said compressed video signal into a plurality of partitions on a digital medium, each of said partitions including a portion of said compressed video signal.
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Accused Products
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. In case of tape error, the tape automatically restores itself when inserted into the tape deck
50 Citations
34 Claims
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1. A video surveillance method comprising:
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generating a video signal containing surveillance images; electronically compressing said video signal into a compressed video signal; and recording said compressed video signal into a plurality of partitions on a digital medium, each of said partitions including a portion of said compressed video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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9. A video surveillance method as in claim 9 wherein said video source is in a mobile vehicle and said telemetry data is selected from the group consisting of:
- an event list, vehicle latitude and longitude information, vehicle speed information, vehicle direction information, vehicle elevation information, time information, date information, and camera/vehicle ID information.
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20. A video surveillance system, comprising:
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a source of a video signal; a video signal compression system electrically connected to said source and providing a compressed video signal; a plurality of digital storage media selected from a digital tape, a hard disk, a semiconductor memory, a CVD, a DVD, and an optical disk; and a digital recording system communicating with said compression system for writing said compressed video signal to a first one of said digital storage media, with said digital storage medium divided into a plurality of partitions, each said partition containing a portion of said compressed video signal; and
writing into an electronic directory into at least two of said storage media, said electronic directory storing directory information associated with said partitioned compressed video signals. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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- 30. A digital medium storing compressed surveillance video, said compressed surveillance video stored in a plurality of partitions on said medium, each of said partitions including a portion of said surveillance video.
Specification