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:
Mar. 24, 1987
Filed:
Dec. 05, 1984
Leendert J van de Polder, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A television system with enhanced definition in the field scanning direction is presented. In the information transmitter a video signal source is coupled directly and via line delay device with a subtraction circuit followed by a modulator with a subcarrier. An adding circuit is coupled with the output of the modulator and the source, possibly via the delay device. The resultant difference information is transmitted frequency-interleaved with the video information under control of a movement detector, to the information receiver. The receiver contains a filter circuit for separating the information. The modulated subcarrier goes via a demodulator to a superposition circuit to which further the video information is also supplied. The output of the superposition circuit is connected via a line delay device to one input of a switch-over circuit. The video information is supplied to a second input of the switch-over circuit. The supplied information on said first and second inputs is passed on by the switch-over circuit during alternate line periods. The result is an improvement of picture definition upon display in the field scanning direction.