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:
Jul. 12, 2016
Filed:
Jan. 10, 2012
Tetsuya Shigeeda, Chiyoda-ku, JP;
Tetsuya Shigeeda, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
An IP address distribution system includes a network containing a plurality of switch apparatuses, IP address distribution apparatuses that assign an IP address according to a request from each of devices connected to the switch apparatuses, and a plurality of position information distribution apparatuses that broadcast a position information packet containing position information into the network, wherein a specific physical port of at least one switch apparatus blocks the position information packet to cause only a single position information packet to be delivered to the devices, the devices transmit an IP-address request signal containing the position information and device-specific information, when requesting assignment of an IP address, and the IP address distribution apparatuses select an IP address from a range corresponding to the position information and the device-specific information and distribute the IP address to a request source device, when receiving the IP-address request signal.