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:
Dec. 18, 1990
Filed:
Jan. 28, 1988
William F Schreiber, Cambridge, MA (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
A high-definition television system in which a production signal is spatiotemporally filtered to remove frequency components and remaining components are transmitted over a channel. In various aspects, the filter produces a generally diamond-shaped frequency response in each of the spatial and spatiotemporal planes; the components selected for transmission are selected in accordance with the amount of motion in the image; the remaining components of image data are transmitted using double-sideband quadrature modulation; a high frequency component of the production signal shares the channel with additional data; and when the image data is transmitted using double-sideband quadrature modulation, baseband signals are derived from closely related areas of the image.