Thomson Licensing

Thomson Licensing S.a.

Daniel Thomas Wetzel

Terry Wayne Lockridge

Mike Arthur Derrenberger

John Alan Gervais

Michael Francis Barry

Anh Quang Nguyen

The disclosed embodiments relate to a system for providing remote tuning and clock synchronization in a network. The system includes a device that receives a signal that includes a plurality of channels, a device that receives a user request indicative of a desire to view at least one of the plurality of channels, and a filter that filters the received signal and transmits a user signal corresponding to the at least one of the plurality of channels to the user. An alternative embodiment of the system includes a device that receives a signal that includes a plurality of packets, at least a portion of the plurality of packets comprising an embedded time stamp, a device that detects the at least a portion of the plurality of packets containing the embedded time stamp, and a device that computes an adjusted time stamp based on the embedded timestamp and a precision local clock and incorporates the adjusted timestamp into the at least a portion of the plurality of packets containing the embedded timestamp prior to transmitting the at least a portion of the plurality of packets to the network.

Method and system for remote tuning and clock synchronization

A WLAN compliant device which comprises a VCX), a MAC, a decoder which outputs video wherein said device compares time stamps to obtain a difference.

Method and apparatus for synchronizing digital video using a beacon packet

A system for multiplexing a transport packet and an Ethernet packet comprises a transport interface for receiving a transport stream comprising the transport packet and a network interface for receiving a network stream comprising the Ethernet packet. The system comprises a packet identifier coupled to the transport interface for filtering the transport stream and selecting the transport packet and a date formatter coupled to the network interface for creating a transport header appended to the Ethernet packet. The system further comprises a multiplexer for receiving the transport packet from the packet identifier, for receiving the Ethernet packet from the data formatter, and for multiplexing the transport packet and the Ethernet packet comprising the transport header.

Transport network multiplexing for transport and ethernet packets

A method and an apparatus using a system level clocking scheme to remove jitter from multi-media packets distributed over an asynchronous network, in particular an Ethernet network. The present invention overcomes the problems associated with jitter introduced in an Ethernet network by using various time stamps to synchronize a client device clock to a headend clock and to control the data flow in the client device to match the rate that the data is received by a broadband receiver coupled to the headend. A first time stamp is prepended to the transport packets when the packets are received from the headend. A second time stamp is placed in the data frame when the data frame is placed on the network. A third time stamp is placed in the data frame when the data frame is received from the network. The second and third time stamps are used for clock synchronization and the first time stamp is used for data flow control. According to the present invention, the time stamps are added at the physical layer so that the time stamps correspond to the actual time the data packets are placed onto and received from the asynchronous network.

Multi-media jitter removal in an asynchronous digital home network

A method and apparatus for compensating for frequency drift in an LNB by storing the frequency offset of each LNB with respect to each channel. When a channel is selected, a particular LNB is activated and the table of offset values is consulted. The offset value for the LNB and channel is used to tune the LNB to a frequency that is appropriate for receiving the selected channel.

Tuning system for achieving rapid signal acquisition for a digital satellite receiver

A method and apparatus for ensuring a correct satellite signal connection. Specifically, a user selects a satellite signal via an integrated receiver/decoder (IRD) from at least one satellite, and the IRD sends a command signal to a selector switch to acquire and lock onto said satellite signal. The IRD repeats transmission of the command signal to the selector switch once the IRD has acquired and locked onto said information signal. Thus, in the event that the selector switch failed to switch to a low noise block converter (LNB) corresponding to the initial command signal, then the repeated command signal helps to ensure that the selector switch switches to the LNB corresponding with the latest command signal sent by the IRD.

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Dayton, OH, United States of America

Daniel Thomas Wetzel