Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
John Kam Ho Lee0
Date of Patent
May 13, 2008
0Patent Application Number
113923440
Date Filed
March 29, 2006
0Patent Primary Examiner
Patent abstract
A security alarm system includes a camera, an alarm control panel, a mixer at the camera, a signal processor at or associated with the alarm control panel, and a single cable comprising only two operative conductors extending between the mixer and the signal processor. The cable provides current to the camera via the mixer and provides a tamper circuit as well as conveying video signals to the signal processor.
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