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. 06, 2008
Filed:
Jul. 03, 2003
Isamu Yoshii, Urayasu, JP;
Mitsuru Uesugi, Yokosuka, JP;
Toshiyuki Uehara, Yokohama, JP;
Akihiko Nishio, Yokosuka, JP;
Isamu Yoshii, Urayasu, JP;
Mitsuru Uesugi, Yokosuka, JP;
Toshiyuki Uehara, Yokohama, JP;
Akihiko Nishio, Yokosuka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In order to perform appropriate reception quality control on each mobile station in a multimedia broadcast/multicast service, a layered coding sectionencodes input data by dividing the input data into two layers and obtains a first layer code string and a second layer code string. The first layer code string is input to a CRC code addition sectionand a CRC code for an error inspection is added thereto at every predetermined block. On the other hand, the second layer code string is input to a CRC code addition sectionand a CRC code for an error inspection is added thereto at every predetermined block. The first layer code string and the second layer code string with the CRC codes added are input to a layered modulation sectionand the layered modulation sectionmodulates a plurality of code strings coded by being divided into a plurality of layers in such away that error rates differ hierarchically among the plurality of code strings and a radio sectionsends the modulated symbol.