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.
Variable Spare Circuit Group Size And Quantity Having Multiple Active Circuits
Thomas J. Cloonan - Lisle IL Daniel W. Hickey - Oswego IL Ubaldo Cepeda - Oswego IL Gerald P. Ryan - Lake Zurich IL
Assignee:
Arris International, Inc. - Duluth GA
International Classification:
H04N 716
US Classification:
725111, 370217, 375222
Abstract:
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.
Signal Splitter Matrix For A Cable Modem Termination System
Thomas J. Cloonan - Lisle IL Daniel W. Hickey - Oswego IL Ubaldo Cepeda - Oswego IL Gerald P. Ryan - Lake Zurich IL
Assignee:
Arris International, Inc. - Suwanee GA
International Classification:
H04N 7173
US Classification:
725111, 375222
Abstract:
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.
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.
Systems And Methods For Upstream And Downstream Catv Plant Capacity Expansion
- Suwanee GA, US Thomas J. Cloonan - Lisle IL, US Chris R. Zettinger - Wheaton IL, US Michael Harrington - Cork, IE Patricia Tessier - Cork, IE Gerald Ryan - Geneva IL, US Darrick Wilson - Montgomery IL, US Oleksandr Volkov - Cork, IE Dermot Lucey - Cork, IE
International Classification:
H04L 12/28
Abstract:
Systems and methods for permitting DOCSIS 3.1 equipment to operate at higher frequencies than specified in the DOCSIS 3.1 standard. Exemplary systems may be capable of alternating between a first mode of operation that provides DOCSIS 3.1 compatible services and a second mode of operation providing a higher level of service than DOCSIS 3.1.
Medicine Doctors
Dr. Gerald F Ryan, Rochester NY - MD (Doctor of Medicine)
GERALD F RYAN, MD 1561 Long Pond Rd Suite 316, Rochester, NY 14626
Rochester General Hospital 1425 Portland Avenue, Rochester, NY 14621
Education:
Medical School Georgetown University Graduated: 1960 Medical School Rochester Gen Hospital Graduated: 1960 Medical School University Hospital SUNY Health Science Center Graduated: 1960
Dr. Ryan graduated from the Georgetown University School of Medicine in 1960. He works in Rochester, NY and specializes in Cardiovascular Disease and Internal Medicine. Dr. Ryan is affiliated with Rochester General Hospital and Unity Hospital.
Dr. Ryan graduated from the University of Toledo College of Medicine in 1978. He works in Madison, WI and specializes in Family Medicine. Dr. Ryan is affiliated with Meriter-UnityPoint Health Hospital, St Marys Hospital and University Of Wisconsin Hospital.
Burncoat Street Elementary School Worcester MA 1944-1953
Community:
Peter Flint, Charles Kerbel, Barbara Fletcher, David Decker, Mark Chenard, David West, Jim Montague, Paul Becker, Richard Grayson, Sherrie Carrstedt, Shirley Pike