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:
Jan. 26, 2010
Filed:
Mar. 03, 2006
Jun Nishihara, Kanagawa, JP;
Hirofumi Shimizu, Kanagawa, JP;
Jun Nishihara, Kanagawa, JP;
Hirofumi Shimizu, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A communication terminal device, a communication system, a communication method, and a program which allow efficient communication processing via multicast communication, along with power saving. The communication terminal devices includes a wireless communication unit comprising: a multicast ACK generating unit which makes it possible to transmit packets having an ACK function; a multicast ACK analysis unit which analyzes received packet data for ACK information; wireless transmission and reception units which perform modulation and demodulation processing; and a central control unit and a timing control unit which control these components. The ACK function is thus implemented by multicast packets in multicast communication. This makes it possible to check if its own transmission data is received by other stations (communication terminals).