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:
May. 14, 1991
Filed:
Dec. 20, 1989
Applicant:
Inventors:
Richard W Citta, Oak Park, IL (US);
Dennis M Mutzabaugh, Mt. Prospect, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358133 ; 358141 ;
Abstract
A method of transmitting a video signal includes separating one or more parts of the video signal into a high frequency component and a low frequency component, encoding the low frequency component using an adaptive delta modulation process and transmitting the encoded low frequency components during non-active intervals of the high frequency component. In one embodiment, the high frequency component is encoded using an entropy code. A receiver is provided for reconstructing a video signal in response to the received encoded signals.