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:
May. 15, 2001
Filed:
Jan. 29, 1999
Steven Gringeri, Foxboro, MA (US);
Khaled Ali Shuaib, Winchester, MA (US);
Evert Basch, Stow, MA (US);
Verizon Laboratories Inc., Waltham, MA (US);
Abstract
A system and method are provided for analyzing and transmitting video over a switched network. According to an aspect of the invention, two phases are generally provided: an analysis phase performed before transmission of the video; and a transmission phase performed after analyzing the video stream. During the pre-transmission video analysis phase, the video stream is analyzed in order to determine the needed traffic control parameters, such as the peak cell rate, the sustained cell rate, and the maximum burst size. The goal of the analysis phase is to select a transmission traffic contract for the encoded video stream that will minimize the utilization of network resources and permit the quality of the video to be maintained. After the analysis phase, the transmission phase is performed to transmit the video over the network in accordance with the selected traffic control parameters. During the transmission phase, a model of the decoder buffer is kept at the source and is first pre-filled by transmitting data at the sustained cell rate. Thereafter, the video stream data is transmitted at the peak cell rate or the sustained cell rate depending on the availability of tokens.