The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1998
Filed:
Oct. 20, 1995
Christopher M Mullins, Yonkers, NY (US);
Thomas J Ray, Yonkers, NY (US);
John P McDonough, Harrington Park, NJ (US);
Sensormatic Electronics Corporation, Deerfield Beach, FL (US);
Abstract
A video surveillance system includes a remotely controllable video camera which generates a video signal, a video switch, a cable for transmitting the video signal from the video camera to the video switch, a control circuit connected to the cable for generating control signals to be transmitted to the video camera via the cable, and a control signal receiver associated with the camera and connected to the cable for receiving the control signals transmitted via the cable. The control signal receiver includes a detection circuit for automatically detecting the length of the cable and generating an adjustment signal indicative of the detected length of the cable. The control signal receiver also includes an adjustable circuit element which is adjusted on the basis of the adjustment signal so as to compensate for the detected length of the cable. The automatic cable compensation in the control signal receiver provides reliable detection of the camera control signals. Automatic cable-length compensation of the video signal is also provided on the basis of the adjustment signal.