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.

Bidirectional transmission is performed by switching transmission directions of a serial transmission path. A transmission system includes the first device that includes a transmission circuit which performs transmission to the second device through the transmission path, and a transmission direction reversal control unit which opens the transmission path after making a request for reversal of a transmission direction in the transmission path to the second device, and reverses the transmission direction at the transmission circuit in response to permission for reversal from the second device. The second device includes a transmission circuit which performs transmission to the first device through the transmission path, and a transmission direction reversal control unit which opens the transmission path in response to the request for reversal from the first device, and, when the first device becomes accessible, gives the first device the permission for reversing the transmission direction at the second transmission circuit.

Systems and methods for future-proofed control signaling are disclosed herein. A waveform enabling broadcast transmission of physical layer frames having variable parameters can be extended to allow for future additions to the control signaling structure without breaking compatibility with existing receivers. In some embodiments, new signaling parameters can be added in an existing portion of a preamble and the length of the modified parameter set can be indicated to legacy receivers. In some embodiments new signaling parameters can be added at the end of the existing preamble and viewed as reserved bits by legacy receivers.

An electronic device includes a memory; a communication interface; and a processor configured to: based on a source device connected through the communication interface being identified to support a version of content transmission encryption, change first Extended Display Identification Data (EDID) information stored in the memory to second EDID information; and change a hot plug detect signal related to the communication interface from a low state to a high state.

A cable network test instrument for isolating a source of noise in a cable network system is disclosed.

A method of detecting CPD in an HFC network is disclosed, where the network includes a return receiver, a cable plant, and a node. The node includes an optical receiver, optical transmitter, a diplexer having forward and return legs, a forward path defined between optical receiver and forward leg, and a return path defined between the optical transmitter and return leg. The optical receiver provides a forward signal to the cable plant and a portion of the forward signal leaks through the return leg and travels to the return receiver. The cable plant contains a CPD source which generates a CPD signal from the forward signal. The CPD signal travels to the return receiver. The method comprises: (a) operating the return receiver to synchronously capture the CPD signal and leaked portion of forward signal; (b) generating from the captured forward signal a reference signal, which substantially simulates the CPD signal; (c) performing a cross-correlation of the reference and captured CPD signals to produce a correlation peak; and (d) detecting the actual CPD signal from the correlation peak.

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.

A Fiber optic based hdmi cable also called in some cases aoc active optical cable, ADDED WITH INTEGRATED IR INFRARED REMOTE CONTROL capabilities to remote control uni-directional and bi-directional audio video and it devices remotely from each-other sides of the hdmi fiber optic based cable, integrated within same the hdmi fiber-based cable, without requiring additional cables and devices, without disrupting or reducing the hdmi standard & connections full specs. IR INFRARED transmitter and receiver eyes from the hdmi fiber optic based cable can be either or both integrated in the/on to the hdmi fiber connector housing shell, keystone, wallplate, multimedia strip, and any other fixed or flying shape of housing, or externally connected via additional IR EYES connectors added on the hdmi aoc fiber connector housing shell, or extrapolated from the hdmi fiber optic based cable using any flying wiring and any connection solution

A tap has an input, an output, and first and second tap outputs. A first transmission line extends between the input and the output and includes a low-pass filter. A second transmission line extends between the input and a switch, and includes a directional coupler and a first high-pass filter. An AC/DC converter is coupled to the first transmission line to operate the switch between open and closed conditions, in response to existence and absence of power in the first transmission line, respectively. In the open condition of the switch, the second transmission line is coupled to a resistor and a ground. In the closed condition of the switch, the second transmission line is coupled to a second high-pass filter and the output. A splitter is coupled between the directional coupler and the first and second tap outputs.

The present technology relates to a transmitting apparatus, a receiving apparatus, and a data processing method each of which enables channel bonding to be more reliably performed. There is provided a transmitting apparatus generating physical layer signaling including first identification information with which a group of frequency bands constituting channel bonding is identified, and second identification information with which the frequency band belonging to the group is identified; and transmitting a broadcasting signal which includes the physical layer signaling and is changed in frequency band thereof by a relay apparatus by utilizing a predetermined frequency band. The present technology, for example, can be applied to a broadcasting system utilizing channel bonding.