Surface processing and display of borehole televiewer signals

Details Surface processing and display of borehole televiewer signals Surface processing and display of borehole televiewer signals

G - Physics

01

V

349/7

G01V 1/40 (2006.01)

Patent

CA 1259123

ABSTRACT OF THE DISCLOSURE Method and apparatus for storing, displaying and processing borehole televiewer signals, comprises digitizing means for the electrical scan signals (ESS), and for storing them in a register at slow input rates until a full 360° scan is completed. A RAM provides storage for a full frame of T.V. raster scan signals, which are being withdrawn from the RAM, to the TV monitor, and back to the RAM. As complete rotary ESS are accumulated they are injected into the stream of circulating video signals to add a new line. Then a second line is accumulated at slow scan rate, read out at TV raster scan rate to add a second line to update the display, and so on. Means are provided for pro- cessing the data stored in the RAM in a variety of ways.

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