A system and method for identifying a viable channel within an allocated downstream spectrum and establishing communication via a modem thereon. The disclosed technology provides for the broadband analysis of some or all of the available downstream spectrum to obtain a mapping of available channels and directing the modem to establish downstream communication upon at least one of these channels. The system includes an interface via which a user can specify parameters governing the analysis of the available downstream spectrum and the identification of a viable downstream channel.

A modem configured to operate in a Multimedia over Coax Alliance, MoCA, access network is provided. The modem comprises a combiner having a coaxial interface for connection to a coaxial cable network and at least two frequency-separated southbound interfaces, SBIs; at least two MoCA chips, wherein each MoCA chip is configured to operate a MoCA access link and comprises a MoCA northbound interface, NBI, connected to one each of said SBIs of the combiner, and a data SBI; a link aggregation switch having at least two switchports connected to one each of the data SBIs, and a port to a data communication interface for connection to a client device for communication at a client data rate; wherein the MoCA chips are configured to operate separate MoCA access links at different MoCA access frequency bands over the coaxial cable network.

The present disclosure provides an internet interface circuit, which includes an ethernet interface, a first isolating transformer, a second isolating transformer, a network signal processing chip and a first interference defending circuit; the ethernet interface is used for receiving and sending a network signal; the first isolating transformer is used for separating a receiving data end of the ethernet interface from the network signal receiving chip; the second isolating transformer is used for separating a sending data end of the ethernet interface from the network signal receiving chip; the first interference defending circuit is used for defending common-mode interference and differential-mode interference of the receiving data end of the ethernet interface; the network signal processing chip is used for processing the network signal. The present disclosure also provides a television. The internet interface protecting circuit of the present disclosure can defend the common-mode interference and differential-mode interference.

An integrated network receiver includes a first universal resource identifier for a first channel and an input suitable for receiving a first input video content from the Internet based upon the first universal resource identifier. The integrated network receiver provides the first input video content for the first channel to a head end connected to a plurality of customer devices through a transmission network. The integrated network receiver updating the first universal resource identifier based upon data obtained from a video address server.

An example method of mapping a plurality of modulation symbols of a plurality of physical layer pipes present in a frame to a resource grid of data cells for the frame is described. The modulation symbols of the plurality of physical layer pipes are represented by a two-dimensional array comprising the modulation symbol values for the plurality of physical layer pipes and the resource grid of data cells is represented by a one-dimensional sequentially indexed array.

A diplex filter having tunable inductors. Preferably the tunable inductors include pads that may each selectively receive one end of a jumper.

A transmission apparatus includes a transmission unit configured to transmit content to an external apparatus through a cable; an information acquisition unit configured to acquire cable-length information that represents a cable length to the external apparatus; and a controller configured to control an operation of the transmission unit based on the cable-length information acquired by the information acquisition unit.

Embodiments are disclosed for dynamically updating bandwidth allocations in an AVB communication system. In some embodiments, a device includes a communication interface communicatively connectable to at least one other device in a communication network and configured to transmit data via the communication network, a processor, and a storage device that stores instructions executable by the processor to detect an incoming data stream, and determine an amount of bandwidth to be used by the data stream. The instructions are further executable to update a bandwidth allocation for the data stream based on the determined amount of bandwidth.

A method of converting legacy HFC CATV cable systems, which transmit data over the optical fiber portion of the system using the optical counterpart of analog RF waveforms, such as RF QAM waveforms transduced to corresponding optical QAM waveforms, to improved HFC CATV systems that transmit data over the optical fiber using optical fiber optimized protocols, such as Ethernet frames and other optical fiber optimized digital transport protocols. According to the method, most aspects of the legacy HFC CATV system may be retained, however at the CATV head end, the optical fiber transmitter system is replaced by an improved system that extracts the underlying symbols from legacy waveforms, packages these symbols into optical fiber optimized packets, and transmits downstream. The legacy optical fiber nodes are replaced with improved nodes capable of receiving the packets and remodulating the symbols into RF waveforms suitable for injection into the system's CATV cable.

A method for transmitting and receiving data using a High Definition Multimedia Interface (HDMI) performed by a source device according to an embodiment of the present invention may include connecting to a sink device through the HDMI; receiving Extended Display Identification Data (EDID) information from the sink device; parsing the received EDID information, and determining an operating parameter; and transmitting a message instructing to execute a video mute function to the sink device.