Remote surveillance system
First Claim
1. An audio/visual surveillance system for use in mobile vehicles such as patrol cars, said system comprising:
- a first video camera producing a first video signal;
a compression system for electronically compressing said first video signal and producing a compressed digital signal; and
a digital tape recorder located in said vehicle for recording said compressed digital signal.
3 Assignments
0 Petitions
Accused Products
Abstract
An audio/visual surveillance system for use in mobile vehicles such as patrol cars includes two video cameras producing video signals and four audio sources producing audio signals. The signals are MPEG-2 compressed and streamed in real time with geographic and time data to a digital cartridge-type tape recorder located in the vehicle. A full patrol car shift is recorded on a single tape and, at the end of the shift, the tape is placed in a master sled bay. An MD5 hash authenticates the data for court use. Up to four videos can be synchronized frame-by-frame for simultaneous monitoring. An MPEG-1 stream is sent via wireless to headquarters in real time. One camera captures data external to the vehicle, while the other captures data internal to the vehicle. One audio source captures audio inside the vehicle and another captures dispatcher communications. The other two audio sources are carried by officers.
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Citations
45 Claims
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1. An audio/visual surveillance system for use in mobile vehicles such as patrol cars, said system comprising:
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a first video camera producing a first video signal;
a compression system for electronically compressing said first video signal and producing a compressed digital signal; and
a digital tape recorder located in said vehicle for recording said compressed digital signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An audio/visual surveillance system for use in mobile vehicles such as police patrol cars, said system comprising:
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a first video camera producing a first video signal;
a second video camera producing a second video signal;
a first audio source producing a first audio signal;
a second audio source producing a second audio signal;
an enclosure having a volume of three cubic feet or less, said enclosure enclosing;
an encoder responsive to said video and audio, said encoder providing a time synchronization signal and said encoder compressing said video signals and said audio signals sufficiently to permit recording of eight continuous hours of;
said first video signal at an equivalent resolution of 720×
480 lines of resolution at 24 frames per second or more, said second video signal at an equivalent resolution of 720×
480 lines of resolution or more and 24 frames per second or more;
said first audio signal;
said second audio signal; and
said synchronization signal, all on a single recording tape cartridge; and
a cartridge tape recorder for recording said signals.
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16. An audio/visional surveillance system for use in mobile vehicles, such as patrol cars, said system comprising:
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a first video camera producing a first video signal, said first video camera located and directed to capture scenes external of said vehicle;
a second video camera producing a second video signal, said second video camera located and directed to capture scenes internal of said vehicle;
a first audio source producing a first audio signal and located to capture audio originating inside said vehicle;
a second audio source producing a second audio signal and located to capture communications with a dispatcher; and
a recorder for recording said signals. - View Dependent Claims (17)
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18. An audio/visual surveillance system for use in patrol cars or other apparatus or application remote from a central command center, said system including a digital system for encoding of audio and video feeds comprising:
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an MPEG encoder system capturing analog video and audio streams through audio and video input channels and converting them to multiple digital streams generated simultaneously, a first stream being buffered to hard disk, RAM, or other storage media and ready for wireless transport on-demand, and a second stream directed to a cartridge-type digital tape recorder;
a wireless transport system for communicating said first stream; and
a cartridge-type digital tape recorder for recording said second stream. - View Dependent Claims (19)
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20. An audio, visual, and other data surveillance system for use in patrol cars or other apparatus or application remote from a central command center, said system including direct-to-tape technology permitting a digital stream to be stored directly to tape in real time for archival.
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21. A software product for use in an audio, video, and other data surveillance system for use in patrol cars or other apparatus or application remote from a central command center, said product including the functions of:
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supervising the operation of MPEG, MJPEG, or other digital protocol encoding devices for digitizing and recording of analog streams;
controlling the operation of MPEG, MJPEG, or other digital protocol decoding devices for playback of digital data streams;
recording current date and time information; and
providing a unique private code for authentication of said recorded information.
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22. A patrol car or other apparatus or application remote from a central command center audio, visual, and other digital data surveillance and management system having a dual digital stream, externally synchronized, system for recording audio, video, and other digital data, with a first digital stream being buffered to hard disk, RAM, or other digital storage medium and ready for wireless transport and a second digital stream stored on a removable digital medium.
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23. A patrol car or other apparatus or application remote from a central command center audio, visual, and other data surveillance and management system providing embedding of geographical location and externally synchronized date and time information onto an MPEG, MJPEG, or other digital data protocol stream permitting synchronization of multiple unit recordings with simultaneous switching, and post production transfer of significant events to CDROM, DVD, digital tape, hard disk, or other digital storage medium for all-points news bulletins, interdepartmental notification, and training.
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24. A patrol car or other apparatus or application remote from a central command center audio, visual, and other data surveillance and management system which can be controlled remotely and time synchronized with inputs from other sources.
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25. A method of audio/visual surveillance comprising performing the following steps in real time:
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producing a first video signal;
compressing said first video signal to produce a compressed digital signal; and
recording said compressed digital signal on a digital tape recorder. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A method of processing MPEG-2 audio/visual data, said method comprising:
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receiving an audio data signal and a visual data signal;
MPEG-2 encoding said audio and visual signals to produce an encoded signal;
packetizing said encoded signal into a plurality of independent data packets; and
writing said packets to a digital recording tape;
wherein said audio data signals and visual data signals are streamed through said encoding, packetizing, and writing processes in real time.
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34. A method of collecting evidentiary information comprising:
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inserting a digital tape cartridge in a tape recorder in a patrol car;
recording a substantially complete patrol car shift of visual information on said digital tape;
removing said digital tape cartridge from said tape recorder; and
transferring said digital tape to tape drive at a central tape processing or storage location. - View Dependent Claims (35, 36)
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37. A method of authenticating patrol car surveillance data, said method comprising:
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providing audio/visual data originating from a patrol car;
utilizing an algorithm to provide a hash value;
recording said data on a digital tape together with said hash value; and
authenticating said data by using said hash value. - View Dependent Claims (38, 39)
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40. A method of data streaming and recording comprising performing the following processes in real time:
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providing a data stream;
compressing said data stream;
packetizing said compressed data stream; and
recording said compressed and packetized data stream on a digital tape. - View Dependent Claims (41, 42, 43, 44, 45)
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Specification