Surveillance system with digital tape cassette
First Claim
Patent Images
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 directory generator for generating directory information;
a digital tape cassette having semiconductor memory incorporated into it; and
a digital video recorder electrically connected to said compression system and to said directory generator for recording said compressed video to said digital tape in said cassette and recording said directory information to said semiconductor memory.
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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.
26 Citations
15 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 directory generator for generating directory information; a digital tape cassette having semiconductor memory incorporated into it; and a digital video recorder electrically connected to said compression system and to said directory generator for recording said compressed video to said digital tape in said cassette and recording said directory information to said semiconductor memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of mobile video surveillance, said method comprising:
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providing on a mobile vehicle a video source producing a video signal; compressing said video signal at said mobile vehicle to form a stream of compressed video data; generating directory data associated with said compressed video; recording at said mobile vehicle said stream of compressed video data to a cassette tape having a built-in solid state memory, and recording said directory information to said solid state memory. - View Dependent Claims (12, 13, 14, 15)
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Specification