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. 12, 1991
Filed:
Jul. 10, 1989
Alan P Cavallerano, Ossining, NY (US);
Mikhail Tsinberg, Riverdale, NY (US);
Karl Wittig, New York, NY (US);
North American Philips Corporation, New York, NY (US);
Abstract
A system for generating high definition television signals. An augmentation signal is provided for supporting the transmission of additional panel information, increasing the aspect ratio of an NTSC compatible main television signal component. Line differential information, as well as high frequency luminance and high frequency chrominance are transmitted in the augmentation signal super line time interval without frequency interleaving components. The high definition augmentation signal is derived by subsampling the high definition image produced by an HDTV source along the diagonal direction of its two dimensional frequency spectrum. The horizontal frequency bandwidth of the HDTV image is perserved without an objectionable loss of resolution to the human visual system.