초록 ▼

A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. For each window of k data packets, the invention generates and transmits at least one c

A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. For each window of k data packets, the invention generates and transmits at least one cross-wise parity packet taken as an index-shifted function over the k data packets. The invention thereby enables a receiving end to recover from packet loss.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of communicating payload through a packet switched telecommunications network, said network including a first node and a second node, said payload defining a sequence of windows of k payload blocks, said sequence including a current window of k payload blocks a

[ What is claimed is:] [1.]1. A method of communicating payload through a packet switched telecommunications network, said network including a first node and a second node, said payload defining a sequence of windows of k payload blocks, said sequence including a current window of k payload blocks and a subsequent window of k payload blocks, said method comprising, in combination:at said first node, generating p parity blocks by an encoding process comprised of functionally combining together the k payload blocks of the current window, wherein p.gtoreq.1, and wherein at least one of said p parity blocks comprises a cross-wise parity block derived as a function of said k payload blocks of said current window taken along an index-shifted path through said k payload blocks of said current window;piggy-backing said p parity blocks onto a number of payload blocks in the subsequent window;transmitting into the network the k payload blocks of the current window; andtransmitting into the network the k payload blocks of the subsequent window, whereby the k payload blocks of the subsequent window includes the p parity blocks.