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. 07, 2008
Filed:
Aug. 12, 2004
Guobin Shen, Beijing, CN;
Shipeng LI, Redmond, WA (US);
Hua Cai, Beijing, CN;
Regis J. Crinon, Camas, WA (US);
Ze-wen Zhang, Beijing, CN;
Guangping Gao, Beijing, CN;
Hong-hui Sun, Beijing, CN;
Baogang Yao, Kirkland, WA (US);
Guobin Shen, Beijing, CN;
Shipeng Li, Redmond, WA (US);
Hua Cai, Beijing, CN;
Regis J. Crinon, Camas, WA (US);
Ze-wen Zhang, Beijing, CN;
Guangping Gao, Beijing, CN;
Hong-Hui Sun, Beijing, CN;
Baogang Yao, Kirkland, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
The techniques and mechanisms described herein are directed at transmitting elementary streams in a broadcast environment. The mechanisms provide a buffer controller and packet scheduler that allow a media format to be transmitted through the broadcasting environment in a manner resulting in a low channel switch delay. A buffer-fullness indicator allows the operation with various types of decoders. A lower bound and an upper bound are calculated for each frame within the elementary stream. The lower bound corresponds to an earliest time for sending the frame without causing an overflow condition within a decoder buffer. The upper bound corresponds to a latest time for sending the frame without causing an underflow condition within the decoder buffer. A send time is then scheduled based on the lower bound and the upper bound that determines when a packet associated with the frame is transmitted over a channel in a broadcast environment.