US PATENT SUBCLASS 348 / 188
.~.~ Using test chart


Current as of: June, 1999
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348 /   HD   TELEVISION

180  DF  MONITORING, TESTING, OR MEASURING {6}
187  DF  .~ Testing of camera {1}
188.~.~ Using test chart


DEFINITION

Classification: 348/188

Using test chart:

(under subclass 187) Subject matter wherein the means includes an optical pattern containing a group of lines and circles for testing the performance of the TV camera.