High capacity surveillance system with fast search capability
First Claim
1. A surveillance system, comprising:
- a source of a video signal;
a video signal compression system electrically connected to said source and providing a compressed video signal;
a marker generator for generating markers independent of said compression, said markers indicative of specific content on said medium; and
a digital video recorder electrically connected to said compression system for writing said compressed video signal to a recording medium and for writing said marker to said medium, said markers being readable independent of said compressed video signal.
2 Assignments
0 Petitions
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 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. In case of tape error, the tape automatically restores itself when inserted into the tape deck.
186 Citations
59 Claims
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1. A 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 marker generator for generating markers independent of said compression, said markers indicative of specific content on said medium; and
a digital video recorder electrically connected to said compression system for writing said compressed video signal to a recording medium and for writing said marker to said medium, said markers being readable independent of said compressed video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A surveillance method, comprising:
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generating a video signal containing surveillance images;
electronically compressing said video signal into a compressed video signal;
generating data associated with said compressed video signal;
recording said compressed video signal and said data onto a digital tape cassette, said tape cassette having a semiconductor memory incorporated into it; and
writing markers into said semiconductor memory, said markers designating where specific portions of said compressed video signal or specific portions of said is located on said tape. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A surveillance method, comprising:
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generating a video signal containing surveillance images;
electronically compressing said video signal into a compressed video signal;
recording said compressed video signal onto a digital tape; and
writing timing markers, independent of said compressed video signal, onto said digital tape, said timing markers being spaced on said tape in a predetermined time pattern. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A method of video surveillance, said method comprising:
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providing one or more video signals;
compressing said one or more video signals to form a plurality of streams of compressed video data; and
streaming a first of said video streams to via a first video channel while streaming a second of said video streams via a second video channel;
wherein said first and second video channels each has a different transfer rate. - View Dependent Claims (41, 42, 43, 44, 45, 46)
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47. A method of video surveillance comprising:
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generating a video signal containing surveillance images;
generating self-authentication data;
electronically compressing said video signal into a compressed video signal;
recording said compressed video signal and said authentication data onto a digital medium; and
self-authenticating said recording of said compressed video data using said self-authentication data. - View Dependent Claims (48, 49, 50, 51)
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52. A method of operating a video surveillance system, said surveillance system including:
- a video camera providing a video signal;
a video signal compression system electrically connected to said camera and providing a compressed video signal; and
a digital video recorder electrically connected to said compression system for writing said compressed video signal to a recording medium;
said method comprising;
accessing a web site via a computer; and
operating said surveillance system via a program located on said web site. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59)
- a video camera providing a video signal;
Specification