A network element of a cable television (CATV) network, said network element comprising a distributed access node unit comprising a core network interface for receiving downstream signals; one or more amplifier units for amplifying downstream signal transmission for output into one or more output channels; a digital predistorion functionality for supplying a predistorion signal into an input of at least one of the amplifier units for correcting non-linearity of the amplifier unit, wherein a sampling signal for adjusting a level of the predistorian signal is obtained from a sampling point common with at least one other functionality of the network element requiring a sampling signal.

A passive entry adapter system includes an external band rejection filter connected to an external network; an entry adapter connected to the external band rejection filter, an input port connecting the entry adapter to the external network; a directional coupler connected to the input port; a frequency-based signal separation device connected to a first terminal and comprising a high-pass terminal, and a low-pass terminal; a splitter connected to the high-pass terminal, where the splitter is configured to be connected to one or more first types of devices; and a broadband output port connected to a second terminal of the directional coupler. The broadband output is configured to be connected to one or more second types of devices. The entry adapter and the external band rejection filter are configured to prevent signals from a frequency band associated with in-network communications produced within an internal network from reaching the external network.

A method of processing a broadcast signal in a transmitting system, includes encoding broadcast data for broadcast services; encoding first signaling information providing information for discovery and acquisition of a broadcast service; encoding second signaling information including service entries for the broadcast services, wherein one of the service entries includes a first service identifier for identifying the broadcast service and bootstrap information for discovering a transport session carrying the first signaling information, wherein the bootstrap information includes destination Internet Protocol (IP) address information of the transport session carrying the first signaling information and destination port number information of the transport session carrying the first signaling information; and encoding physical layer signaling information including first physical layer signaling information having a fixed size and second physical layer signaling information having a variable size.

A system for optical data interconnect of a source and a sink includes a first HDMI compatible electrical connector able to receive electrical signals from the source. A first signal converter is connected to the first HDMI compatible electrical connector and includes electronics for conversion of TMDS or FRL electrical signals to optical signals, with the electronics including an optical conversion device connectable to source ground to reduce noise. At least one optical fiber is connected to the first signal converter. A second signal converter is connected to the at least one optical fiber and includes electronics for conversion of optical signals to TMDS or FRL electrical signals. A power module for the second signal converter provides power to an electrical signal amplifier connectable to sink ground. A second HDMI compatible electrical connector is connected to the second signal converter and able to send signals to the sink.

A method for generating an original total stream intended for being distributed to at least one broadcasting site, which includes a modulator and a transmitter sending a radiofrequency signal on a first frequency. The method implements the following acts: obtaining at least one transport stream comprising at least one transport packet; obtaining, from at least one modulation parameter for the broadcasting site, at least one starting instant of a modulation frame intended for being sent by the broadcasting site; inserting at least one modulation information packet in the at least one transport stream, at a position determined from the at least one starting instant; and generating the original total stream, including at least one physical layer pipe encapsulating the at least one transport stream carrying the at least one modulation information packet.

An entry adapter for a cable television (CATV) network includes a first signal separation device configured to separate downstream CATV signals into a first downstream high-frequency signal and a first downstream low-frequency signal based on a first cutoff frequency, a second signal separation device configured to separate the downstream CATV signals into a second downstream high-frequency signal and a second downstream low-frequency signal based on a second cutoff frequency, and a signal frequency sensor and selector device in selective communication with the first and second signal separation devices.

A cable modem (CM) system for utilizing additional bandwidth is disclosed. The system includes a receiver path, a feedback path, and a feedback receiver. The receiver path is configured to obtain a base signal having a base bandwidth from a downstream signal. The feedback path is configured to obtain an additional signal having an additional bandwidth from the downstream signal and convert the additional signal to a feedback bandwidth. The feedback receiver of a cable modem tuner is configured to process the additional signal using the feedback bandwidth.

In one embodiment, a system for providing data communication services includes a cable television (CATV) tap operably coupled to a CATV network, the CATV tap comprising a tap transceiver. Further, a CATV gateway device is operably coupled to the CATV tap and includes a gateway modem using a first communications standard to communicate with the CATV network, and a gateway transceiver operably coupled to the gateway modem and configured to communicate with the tap transceiver. The system further includes a first device operably coupled to the CATV tap and configured to send or receive device data. The device data includes control data for controlling the first device or monitoring data generated by the first device. The tap transceiver of the CATV tap is configured to communicate the device data between the first device and the gateway transceiver.

There is a problem that video data cannot be relayed from a transmission device having an HDMI connector to a receiving device having a USB Type-C connector. In order to solve the above problem, each of a receiving device having an HDMI reception function unit and a relay device, such as a conversion cable for relaying video data from a transmission device, is made to have a function of determining the other devices. By performing switching of a terminator or a protection element between valid and invalid or performing signal connection switching based on the determination result of the function unit, the above problem can be solved. In addition, it is also possible to realize reverse insertion connection for reversing the video data transmission direction of the relay device.

The present invention relates to a video signal transmission device and the like that can support a variety of system specifications. The device includes a packer unit, an encoder unit, and a serializer. The packer unit generates, from a video signal of one or more pixels, a plurality of block signals having a packet configuration of size corresponding to the number of pixels and the number of tone bits of a color signal constituting a video signal. At this time, a control signal including a pulse having a width corresponding to the number of pixels and the number of tone bits is also generated. The encoder unit applies encoding processing having encoding efficiencies that are different between a first period and a second period of a control signal that are distinguished depending on existence or non-existence of a pulse to the block signals.