The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 1981
Filed:
Dec. 27, 1979
Marinus Van Renseen, Leola, PA (US);
Myron H Wardell, Jr, Lititz, PA (US);
RCA Corporation, New York, NY (US);
Abstract
An apparatus for locating the position of the horizontal centerline on the display screen of a television kinescope comprises two screen edge sensors disposed at the top and bottom of the display screen. The edge sensors are mounted on a vertically movable member at a separation equal to the vertical dimension of the display screen. Each edge sensor comprises a light source for directing a beam of light at the kinescope along a first light path and a detector for sensing the different amount of radiation returned from the display screen and the adjacent reflective aluminum coating along a second light path. The sensors are moved until the detector outputs are equal, indicating the sensor is located at similar positions with respect to the top and bottom screen edges. The mid-point between the sensor is then the location of the horizontal centerline of the display screen.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile