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:
Aug. 04, 2009
Filed:
Dec. 22, 2004
Yoshikazu Ishii, Hitachinaka, JP;
Setsuo Arita, Hitachiota, JP;
Yuji Ichinose, Mito, JP;
Nao Saito, Hitachi, JP;
Daisuke Sinma, Hitachi, JP;
Yasuhiro Nakatsuka, Naka, JP;
Yoshikazu Ishii, Hitachinaka, JP;
Setsuo Arita, Hitachiota, JP;
Yuji Ichinose, Mito, JP;
Nao Saito, Hitachi, JP;
Daisuke Sinma, Hitachi, JP;
Yasuhiro Nakatsuka, Naka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Using a network in which one master station modemand multiple slave station modemare physically connected by rudder connection or bus connection with a telecommunication line, the measurement result of the S/N ratio between the master station and slave stations is once collected in the master station at the initialization stage, pairs of the modulation method, by which all modems can demodulate at high probability, and transmission voltage are calculated based on this data, and the calculation is transmitted to all slave stations; and at a normal transmission stage, information regarding the coordination and control of the network is transmitted in accordance with this setting. Thus, one-to-multi communication is realized, guaranteeing an access right.