Arris International, Inc.

Arris Enterprises LLC

Arris Group, Inc.

Ubaldo Cepeda

Gerald P Ryan

Thomas J Cloonan

Daniel W Hickey

Frank O'Keeffe

Methods, systems, and apparatus can be used to flexibly allocate RF channels to output ports on edge termination systems. Flexible edge termination systems can include multiplexing modules operable to combine signals together inside of the flexible edge termination system to provide a flexible mapping of RF channels to output ports.

Providing flexible RF channel to port mappings

An IF receiver receives a tapped portion of a modulated communication signal. A processor, local with respect to the IF receiver, receives an interrupt from a main processor instructing it to evaluate the power levels of desired and undesired components of the communication signal. The interrupt may be sent for a variety of reasons, such as according to a predetermined schedule, or in response to changes in a communication network, such as new equipment installation and temperature changes. The local processor instructs the IF receiver to tune it's LO so that the evaluation range of the receiver and feedback loop to parameter-adjustable components includes the frequency, or frequencies, of a specified signal component. The local processor evaluates the power level of the specified signal component. Based on the evaluation, the local processor instructs parameter-adjustable signal processing components to alter parameters to optimize characteristics of the communication signal for transmission.

Method and system for spur suppression in modulators

In a cable data system, several frequency division multiplexed upstream data signals on an individual cable can be selectively routed to frequency-selective band pass filters using a relay matrix between the filters and the cable. By appropriately controlling the relays, the upstream information can be split out to as many different filters that might be required to recover the frequency division multiplexed information. Cabling installation to a cable modem termination system is simplified and maintenance costs are reduced by carrying multiple signals on one cable.

Signal splitter matrix for a cable modem termination system

A plurality of daisy-chained switching circuit cards are each coupled to a different active circuit card. Feed-through circuit cards are each coupled to spare circuit cards having substantially identical circuitry to the active circuit cards. The feed-through circuit cards are also daisy-chained with the switches on the switching circuit cards. The switching circuit cards can replace the feed-through circuit cards and the active circuit cards replace the spare circuit cards in order to vary the size of the spare groups (a group of spare circuit cards and active circuit cards) and also the quantity of the spare groups.

Variable spare circuit group size and quantity having multiple active circuits

In a cable data system, frequency division multiplexed upstream data traffic is first split for subsequent signal processing. In the course of performing an analog RF signal splitting operation, signal splitter output amplitude is decreased as an artifact of an RF signal splitter. A signal splitter indicator type that is used per signal splitter, provides an indication to the CMTS channel interface cards to control the amount of compensating gain required to restore the original signal to its original amplitude.

Signal splitter and gain adjustment system for a cable data system

Active and spare circuit cards are each paired with switch cards. Each switch on the switch cards is daisy chained with prior and succeeding switches. A master controller senses a faulty circuit indication signal from each of the active circuit cards. When the faulty circuit indication signal indicates a fault on a particular active circuit card, the controller instructs the switch card that is paired with that circuit card to switch it out and switch in a spare circuit card.

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Oswego, IL, United States of America

Ubaldo Cepeda