US PATENT SUBCLASS 348 / 325
.~ Cathode-ray tube

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


348 /   HD   TELEVISION

207  DF  CAMERA, SYSTEM AND DETAIL {19}
325.~ Cathode-ray tube {5}
326  DF  .~.~> Automatic beam focusing or alignment
327  DF  .~.~> Automatic beam current control
328  DF  .~.~> Remanent image erasure
329  DF  .~.~> With emissive target or photocathode (e.g., orthicon) {1}
331  DF  .~.~> With photoconductive target (e.g., vidicon)

DEFINITION

Classification: 348/325

Cathode-ray tube:

(under subclass 207) Subject matter including a camera tube in which an optical image of an object is converted to a charge on a photosensitive target surface and then scanned by an electron beam to convert the charge image to an electrical signal.

(1) Note. Common cathode-ray tubes include iconoscope, orthicon, and vidicon.