Michael Patrick Healy

US Patent:

7688828, Mar 30, 2010

Filed:

May 17, 2005

Appl. No.:

11/134589

Inventors:

John T. Chapman - Saratoga CA, US
Daniel W. Crocker - San Jose CA, US
Alon S. Bernstein - Sunnyvale CA, US
Michael J. Healy - Berlin MA, US
David B. Fox - Bolton MA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28
H04L 12/56
H04J 3/16
H04J 3/22
H04J 1/00
H04N 7/173
H04N 7/16

US Classification:

37039521, 370401, 370466, 370469, 370490, 725111, 725114, 725144

Abstract:

A modular Cable Modem Termination System (CMTS) includes a packet shelf operating a Data Over Cable Service Interface Specifications (DOCSIS) Media Access Control (MAC) framer. One or more downstream Physical Interface (PHY) shelves receive DOCSIS data from the packet shelf over a packet switched network and modulate the DOCSIS data for sending on a downstream path of a cable plant. One or more upstream PHY shelves send DOCSIS data received from an upstream path of the cable plant over the packet switched network to the packet shelf. By separating the PHY components from the MAC and from the system software, the PHY components for a Hybrid Fiber Coax (HFC) plant may be replaced with different PHY components for other access technologies such as wireless, Digital Subscriber Lines (DSL), Ethernet-to-the-Home, Fiber-to-the-Home, or fiber Passive Optical Networks (PONs).

US Patent:

7782898, Aug 24, 2010

Filed:

Feb 4, 2003

Appl. No.:

10/358416

Inventors:

John T. Chapman - Saratoga CA, US
Alvar A. Dean - Groton MA, US
Richard J. Santarpio - Hudson MA, US
John P. Prokopik - Auburn NH, US
Michael J. Healy - Berlin MA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04J 3/22

US Classification:

370468, 370503

Abstract:

A wideband cable modem system increases available bandwidth of a single channel by encoding a data stream into wideband packets. The wideband packets are associated with a logical wideband channel that extends over multiple physical downstream cable channels.

US Patent:

8457156, Jun 4, 2013

Filed:

Aug 10, 2010

Appl. No.:

12/854009

Inventors:

John T. Chapman - Saratoga CA, US
Alvar A. Dean - Groton MA, US
Richard J. Santarpio - Hudson MA, US
John P. Prokopik - Auburn NH, US
Michael J. Healy - Berlin MA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04J 3/16
H04J 3/24
H04J 3/06

US Classification:

370468, 370474, 370503, 370537

Abstract:

A wideband cable modem system increases available bandwidth of a single channel by encoding a data stream into wideband packets. The wideband packets are associated with a logical wideband channel that extends over multiple physical downstream cable channels.