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:
Nov. 15, 2011
Filed:
Dec. 10, 2008
Takehiko Saito, Kanagawa, JP;
Masaki Kitano, Tokyo, JP;
Hiroyuki Shigei, Tokyo, JP;
Masaaki Takesue, Tokyo, JP;
Takehiko Saito, Kanagawa, JP;
Masaki Kitano, Tokyo, JP;
Hiroyuki Shigei, Tokyo, JP;
Masaaki Takesue, Tokyo, JP;
Sony Corporation, , JP;
Abstract
To provide an electronic apparatus capable of easily detecting a terminal that forms a loop connection state with a simplified configuration. A control unit counts the number of broadcast packet supplied from a switching hub to a communication unit within a predetermined time period and determines whether the number of packets exceeds a threshold value (ST, ST). If the number of packets exceeds the threshold value, the control unit determines that an abnormal connection state occurs, that is, a loop is detected and starts a process in which the control unit identifies a network terminal that forms the loop connection state (ST, ST). The control unit counts the number of broadcast packets that reach each of the network terminals, that is, broadcast packets input to each port of the switching hub. Thereafter, the control unit determines whether the network terminal that has received the number of packets exceeding the threshold value is present, that is, whether an abnormally connected terminal is present (ST, ST). If an abnormally connected terminal is present, the control unit displays a message indicating abnormal connection, the abnormally connected terminal, and a message prompting connection change (ST).