Patent ReferencesEmergency detection alarm and evacuation system Surveillance system Surveillance system Remote control apparatus Security apparatus for controlling access to a predetermined area Abnormality supervising system Patent #: 4737847 InventorApplicationNo. 373383 filed on 06/29/1989US Classes:348/159, Plural cameras340/3.71, Having manual control input340/825.49, Location indication348/153, Using plural cameras348/222.1, Combined image signal generator and general image signal processing348/705SwitchingExaminersPrimary: Chin, Tommy P.Attorney, Agent or FirmInternational ClassesH04N 005/247H04N 007/18 AbstractAn apparatus for a closed circuit television network having a plurality of video cameras producing video signals, a plurality of video display monitors and a video switcher apparatus coupled therebetween, comprising control apparatus coupled to the video switcher apparatus for controlling which video signals are displayed on each of the plurality of video display monitors. Also provided are graphics user interface apparatus coupled to the control apparatus for permitting a user to operate the control apparatus, thereby permitting the user to control which video signals are displayed on the plurality of video display monitors.Field of SearchAlarm system supervisionTesting Automatic (e.g., periodic, start-up) Condition position indicator Display board Specific condition Intrusion detection Condition of electrical apparatus Having indication or alarm (e.g., location indication) Additional to other selective control Location indication | |