The present technique relates to a data processing apparatus and a data processing method each of which enables a burden imposed on processing on a reception side to be reduced. A data processing apparatus produces signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame, and processes the signaling so as for the signaling to be contained in a preamble of the physical layer frame, thereby enabling a burden imposed on processing on a reception side to be reduced. The present technique, for example, can be applied to data transmission complying with the broadcasting standards such as ATSC3.0.

An apparatus for determining a set of transmit parameters capable of improving and/or optimizing data throughput to a destination device. The apparatus includes an input circuit that receives a signal containing a plurality of data blocks for use by a plurality of devices. At least one of the data blocks is associated with the apparatus and encoded using a first set of transmit parameters. A transmit parameter processor determines a signal to noise ratio value for the received signal and a block error rate value for the at least one data block and at least one other data block encoded using a different set of transmit parameters. A processor generates a request for encoding subsequent data blocks destined to the apparatus using a second set of transmit parameters. A method and system are also disclosed.

A transmission device according to the present disclosure includes: a transmission unit configured to output, to a transmission channel, a plurality of packets each including a payload and a header added to the payload, the payload including pixel data corresponding to one line included in an image of one frame; and an insertion ratio calculator configured to calculate an insertion ratio of a padding code, the padding code being inserted into the payload to fill a difference between a transmission rate of the pixel data that is inputted to the transmission unit and a transmission rate of the pixel data that is outputted from the transmission unit to the transmission channel.

A network element of a cable television network includes at least a first and a second upstream amplifier stage, a first attenuator and a first equalizer between the first and the second amplifier stage, and a second attenuator after the second upstream amplifier stage in upstream signal path direction. A target value is determined for total attenuation of the components of the amplifier. The total attenuation is a sum of attenuations of the first attenuator, the first equalizer, and the second attenuator. The attenuation of the first equalizer is preset. The attenuation of the first attenuator is set to a maximum value such the sum of the attenuations of the first attenuator and the first equalizer is below a first threshold value. The attenuation of the second attenuator is set such that the total attenuation reaches the target value.

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.

A network element of a cable television network includes at least a first and a second upstream amplifier stage, a first attenuator and a first equalizer between the first and the second amplifier stage, and a second attenuator after the second upstream amplifier stage in upstream signal path direction. A target value is determined for total attenuation of the components of the amplifier. The total attenuation is a sum of attenuations of the first attenuator, the first equalizer, and the second attenuator. The attenuation of the first equalizer is preset. The attenuation of the first attenuator is set to a maximum value such the sum of the attenuations of the first attenuator and the first equalizer is below a first threshold value. The attenuation of the second attenuator is set such that the total attenuation reaches the target value.

Systems and methods that receive noise measurements associated with a network device in a communications network, and for each of the plurality of subcarriers, and use the noise measurements to characterize the severity of noise ingress into the network device specifically due to interference from wireless communications in proximity to the network device.

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.

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.

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.