07356751 is referenced by 16 patents and cites 9 patents.

A data broadcast network with a return channel providing a guaranteed error-free data delivery simultaneously to multiple receiving devices. The network transmits data in packets and uses the return channel for audience measurement and packets recovery. Whenever a corrupted packet is detected, the multiple receiving devices play a kind of “lottery game” running generators of random numbers, and only “winners” submit retransmission requests over the return channel. While in the game each receiver acts on its own, it is advised by the sender on the audience size, i.e. the overall number of receivers. It allows setting the game so to limit the number of retransmission requests to just a few and to keep it independent from the audience size. The sender performs the audience measurement by transmitting packets with wrong error-checking values and evaluating receivers' responses.

Title
Error handling and audience measurement in datacast network with return channel
Application Number
11/810668
Publication Number
7356751 (B1)
Application Date
June 7, 2007
Publication Date
April 8, 2008
Inventor
Gutman Levitan
Stamford, 06901
CT, US
Agent
Ilya Zborovsky
IPC
H03M 13/00
H04L 1/14
H04L 1/18
G08C 25/02
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