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. 03, 2006
Filed:
Aug. 29, 2000
Shigetoshi Sameshima, Yokohama, JP;
Katsumi Kawano, Kawasaki, JP;
Koichi Sano, Yokohama, JP;
Motohisa Funabashi, Machida, JP;
Masanori Kataoka, Yokohama, JP;
Shigetoshi Sameshima, Yokohama, JP;
Katsumi Kawano, Kawasaki, JP;
Koichi Sano, Yokohama, JP;
Motohisa Funabashi, Machida, JP;
Masanori Kataoka, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention relates to a distributed system in which processors incorporated in machines and objects are mutually linked in operation, and an object of the present invention is to provide a distributed system in which each device can establish a link with a suitable device according to changes in the environment and conditions, independently from the system configuration controlled by a server. In order to achieve the above object, each device provided by the present invention obtains information on surrounding devices through a sensoror communication processing, recognizes the environment around it through environment recognition processing, and stores the environmental information in an environment management table. By employing link control processing, each device shares conditional information stored in a profileand a policyof each device through the communication processing. Each device locally and continuously determines a device to be linked with it or whether to perform a link operation requested by another device, using the shared conditional information, information on the surrounding environment, and the policy. The results of a link operation are made public and shared by each device through the link control processing, and used for narrowing the range of link target devices.