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. 10, 2005
Filed:
Nov. 30, 1999
Makoto Hagai, Osaka, JP;
Hideaki Fukushima, Kashiba, JP;
Yoshinori Matsui, Katano, JP;
Seiji Horii, Kashihara, JP;
Tatsuya Ohnishi, Kawanishi, JP;
Makoto Hagai, Osaka, JP;
Hideaki Fukushima, Kashiba, JP;
Yoshinori Matsui, Katano, JP;
Seiji Horii, Kashihara, JP;
Tatsuya Ohnishi, Kawanishi, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a data transmission method of the present invention, not only when relay of input packets is performed but also transmission of a retransmission packet or a correction packet is performed, changes in an output rate due to output rate control is suppressed, and data transmission is efficiently performed according to a capacity of an output channel. A data transmission device comprises a packet priority decision unitfor deciding priorities of input packets, a retransmission packet, and an FEC packet, an output delay calculation unitfor calculating a delay time until data of the respective packets is reproduced by a receiving terminal, and an FEC packet generation unitfor generating an FEC packet containing an error correcting code which corresponds to a packet designated on the basis of the priorities of the respective packets. When transmission of the retransmission packet and the FEC packet together with the input packets is performed, lower priority packets corresponding to a size of packets which are additionally transmitted are thinned out.