Abstract: A method for adding Time Marker Packets, TMPs, comprising Metadata to an MPEG-2 transport stream transmitted via a broadcast network for providing a deterministic transport stream, comprising providing feeds of data from at least one source, where the feeds comprise payload packets being referenced by a common 1 PPS reference, and where the feeds are input to at least one multiplexer, MUX; providing Time Marker Packets, TMPs, as input to each multiplexer, where each TMP comprises a plurality of time stamps per second measured relative to said 1 PPS reference, and each TMP has a value representing an Absolute Program Clock Reference, APCR, at the time of transmission, where the APCR is based on the Epoch time, and where the TMP packet further comprises PCR, OPCR locked to said 1 PPS and UTC leap seconds.

Abstract: An asynchronous switching system and method for processing SDI data streams, the system and method utilizing one or more buffers for cleaning up an output of a dirty IP switch.

Abstract: A signal protector utilizes a variable latency station to provide error correction.

Abstract: A temporal alignment system and method for example for detecting temporal misalignment in video frames when the frames are divided for transport using a signal divider for dividing a single signal S into portions S1 . . . SN and using average picture level in determining whether data sets within a particular frame are misaligned.

Abstract: A method for adding Time Marker Packets, TMPs, comprising Metadata to an MPEG-2 transport stream transmitted via a broadcast network for providing a deterministic transport stream, comprising providing feeds of data from at least one source, where the feeds comprise payload packets being referenced by a common 1 PPS reference, and where the feeds are input to at least one multiplexer, MUX; providing Time Marker Packets, TMPs, as input to each multiplexer, where each TMP comprises a plurality of time stamps per second measured relative to said 1 PPS reference, and each TMP has a value representing an Absolute Program Clock Reference, APCR, at the time of transmission, where the APCR is based on the Epoch time, and where the TMP packet further comprises PCR, OPCR locked to said 1 PPS and UTC leap seconds.

Abstract: An asynchronous switching system and method for processing SDI data streams, the system and method utilizing one or more buffers for cleaning up an output of a dirty IP switch.

Abstract: A temporal alignment system and method for example for detecting temporal misalignment in video frames when the frames are divided for transport using a signal divider for dividing a single signal S into portions S1 . . . SN and using average picture level in determining whether data sets within a particular frame are misaligned.

Abstract: An asynchronous switching system and method for processing SDI data streams, the system and method utilizing one or more buffers for cleaning up an output of a dirty IP switch.

Abstract: A compact router with redundancy includes embodiments having main and backup crosspoint switching devices wherein one of the switching devices is removable from a main circuit board via a quick disconnect means such as an electrical connector.

Abstract: A temporal alignment system and method for example for detecting temporal misalignment in video frames when the frames are divided for transport using a signal divider for dividing a single signal S into portions S1 . . . SN and using average picture level in determining whether data sets within a particular frame are misaligned.

Abstract: A temporal alignment system and method for example for detecting temporal misalignment in video frames when the frames are divided for transport using a signal divider for dividing a single signal S into N signal portions S1 . . . SN and using average picture level in determining whether data sets within a particular frame are misaligned.

Abstract: A signal protector utilizes a variable latency station to provide error correction.

Abstract: A signal protector utilizes a variable latency station to provide error correction.

Abstract: A signal protector utilizes a dual data path delay offset enabling signal recovery on both paths following simultaneous data loss on both paths.

Abstract: A signal protector utilizes a dual data path delay offset enabling signal recovery on both paths following simultaneous data loss on both paths.

Abstract: A signal protector utilizes a variable latency station to provide error correction.

Abstract: This invention concerns packet recovery for real-time (live) multi-media communication over packet-switched networks like the Internet. Such communication includes video, audio, data or any combination thereof. The invention comprises forward error correction (FEC) algorithms addressing both random and burst packet loss and errors, and that can be adjusted to tradeoff the recoverability of missing packets and the latency incurred.

Abstract: This invention relates generally to a packet recovery algorithm for real-time (live) multi-media communication over packet-switched networks, such as the Internet. Such multi-media communication includes video, audio, data or any combination thereof. More specifically, the invention comprises a forward error correction (FEC) algorithm that addresses both random and burst packet loss and errors, and that can be adjusted to tradeoff the recoverability of missing packets and the latency incurred. The transmitter calculates parity packets for the rows, columns and diagonals of a block of multi-media data packets using the exclusive or (XOR) operation and communicates the parity packets along with the multi-media data packets to the receiver. The receiver uses the parity packets to recover missing multi-media data packets in the block. The FEC algorithm is designed to be able to recover long bursts of consecutive missing data packets.