Tuesday, February 20, 2007

XM Receives Patent for Using Stored Content At Receivers to Improve Efficiency of Broadcast System Bandwidth Use

Today, February 20, 2007, XM received a patent for using stored content to improve bandwidth efficiency.

It's a relatively short and simple patent. Music, advertisements, news programs, etc. are stored locally on a receiver. At some point, control codes are sent to the receiver to play back the locally stored content in the alloted time slot. It is more efficient, for example, to store a popular song and play it back on command than to re-broadcast it each time.


United States Patent 7,180,917
Marko , et al. February 20, 2007

Method and apparatus for employing stored content at receivers to improve efficiency of broadcast system bandwidth use

Abstract

The invention relates generally to a receiver unit in a digital broadcast system for receiving a broadcast signal comprising content segments and control data, and generating an output signal using the content segments and previously stored content segments. The previously stored content segments are retrieved from a local memory device using the control data and inserted among the received content segments.


Inventors: Marko; Paul D. (Pembroke Pines, FL), Wadin; Craig P. (Sunrise, FL)
Assignee: XM Satellite Radio Inc. (Washington, DC)
Appl. No.: 09/695,226
Filed: October 25, 2000

Current U.S. Class: 370/535 ; 370/319; 725/89
Current International Class: H04J 3/04 (20060101)
Field of Search: 370/315,316,326,390,432,535,537 725/38,39,40,42,44,46,47,48,49,50,87,88,89



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