Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-10-02
1991-11-26
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358229, 358335, 362 22, 359173, H04N 718
Patent
active
050687204
ABSTRACT:
A video inspection system for hazardous environments is provided, comprising a housing, sealable so as to contain a pressurized gas therein, having a view opening therein and further including a valve for introducing pressurized gas into the housing, connected to the housing; and a transparent lens, sealingly affixed across the view opening; a camera for recording visual images through the view opening, mounted within the housing; and a power supply, for powering the camera, mounted within the housing and operatively connected to the camera. A method for operating the above system is also provided, including the steps of substantially purging undesirable gases from the interior of the housing; sealing the housing, eliminating external connections thereto; introducing non-flammable gas to the interior of the housing until the pressure in the housing reaches a desired level; and operating the camera within the housing. The system may also be operated as a portable lighting system without the camera and may utilize fiber optics communications to transmit contemporaneous signals from the camera in a hazardous environment.
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Fordom Electronics catalog, Vol. 16, No. 5, "American Fibertek Sentry Vision".
Herlitz Nils G.
Iglehart Karl I.
Sentell John S.
Britton Howard W.
Kiesel William David
Safe T.V., Inc.
Tucker Robert C.
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