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. 27, 2007
Filed:
Oct. 05, 2000
Maki Yukawa, Tokyo, JP;
Maki Yukawa, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A second is counted at a step S, and an information table is read at a step S. Content change of the information table is checked at a step S. The content change is checked by checking the value of a CRC or checking content change of at least one of values of PIDs of an image, a sound and a PCR, stream types and descriptors, information necessary for operations of a receiver. When the contents of the information table are determined as changed by the aforementioned checking method (YES at the step S), a determination is made that change of a program is detected at a step Sand a program parameter described in the information table is set as a signal extraction parameter of a demultiplexer at a step S, for executing channel changing validating the signal extraction parameter set in the demultiplexer at a step S. Thus obtained is a digital broadcast receiving system capable of executing receiving in program change with no hindrance through a receiver having a relatively simple structure.