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:
Oct. 14, 2003
Filed:
Oct. 18, 1999
Takayuki Nyu, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
For establishing a parent-child relationship between adjacent network nodes interconnected by a transmission medium, a handshaking circuit comprises a state detector for monitoring the transmission medium to detect predetermined first and second states and a contention that occurs when the predetermined first states are simultaneously present. A state machine asserts the first state for initiating a handshaking process and relinquishes this state when a contention is detected. A receive count value is continuously incremented from the instant the contention is detected to the instant the transmission medium changes to an idle state. A transmit count value is continuously incremented from the instant the first state is detected to the instant the contention is detected. When the transmit count value is greater than the receive count value, the state machine asserts the first state again and when the transmit count value is smaller than the receive count value, it asserts the second state.