Harmonic, Inc.

Boris Brun

Ariel Zaltsman

Adi Bonen

Guy Levy

A single hardware device ('unified NDR core') that supports a narrowband digital return (NDR) channel for a plurality of remote PHY devices. The unified NDR core may be located within a cable headend. The unified NDR core comprises a single digital-to-analog converter (DAC) which converts digital payloads carried by digital packets received from the plurality of Remote PHY devices into a RF signal. The unified NDR core further comprises a transmitter for sending the RF signal to an Out-of-Band (OOB) Termination System. The unified NDR core supports a plurality of narrowband digital return (NDR) channels for the plurality of remote PHY devices.

Remote PHY narrowband digital return (NDR)

A distribution system that may include multiple radio frequency outputs, a group of channel processing and digital up conversion units, and a set of digital to analog converters. The set of digital to analog converters is coupled between the group of channel processing and digital up conversion units and the multiple radio frequency outputs. The group of channel processing units may be arranged to generate multiple digital multiplexes and to provide the multiple digital multiplexes to the set of digital to analog converters. Each digital multiplex comprises digital broadcast channels provided from at least two channel processing and digital up conversion units. The set of the digital to analog converters may be arranged to convert the multiple digital multiplexes to provide multiple analog multiplexes and to provide the multiple analog multiplexes to the multiple radio frequency outputs.

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Haifa, Israel

Boris Brun