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:
Jun. 24, 2003
Filed:
Aug. 16, 1999
Yasuhiro Mizuta, Fukuoka, JP;
Masami Ohta, Fukuoka, JP;
Kazunori Umezaki, Fukuoka, JP;
Tomoyuki Uekado, Fukuoka, JP;
Yasuo Inoue, Fukuoka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A voice gateway is used to transmit voice signals through the Internet. Upon receiving a connection request, the gateway calculates an end-to-end delay time and selects a proper route according to the calculated delay time to improve the quality of voice transmission. A gateway ( ) on the caller side multicasts a connection request to gateways ( ) on the receiver side. Each of the receiver gateways returns a response to the caller gateway. According to the response, the caller gateway calculates a compression/decompression allowance and selects a route that employs a compression rule whose compression or decompression time is shorter than the compression/decompression allowance.