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:
Apr. 30, 2002
Filed:
Oct. 26, 2000
Takayuki Nyu, Tokyo, JP;
Kohichiro Suzuki, Kanagawa, JP;
NEC Corporation, , JP;
Abstract
A connection control circuit is provided to guarantee a high quality of port-to-port connection service by enabling to maintain the suspended state even when a disparity exists in the pulse widths of the envelope signals of the tone signals between the sender and receiver, exemplified by a receiver tone pulse width being wider than a sender tone pulse width. Connection control is achieved by providing a signal correction circuit between the receiver circuit of a port that receives incoming signals from an opposing port through a transmission line and a connection state managing machine that manages connection between the ports. The signal correction circuit corrects the tone pulse width of an envelope-signal generated from the incoming tone signal by broadening the pulse width so as to conform to a tone signal having the pulse width specified by own connection state managing machine.