Tony Z Huang, 562145 Donovan Way, San Ramon, CA 94582

6643285, Nov 4, 2003

Feb 17, 1998

09/024243

John Edward Vincent - Ottawa, CA
George F. Irwin - Kanata, CA
Gary M. Depelteau - Ottawa, CA
Tony Huang - Novato CA
David A. Fisher - Kanata, CA
James L. Watchorn - Nepean, CA
Melhem I. Chaar - Gloucester, CA

Nortel Networks Limited - St. Laurent

H04L 1256

370389, 370429, 370474, 370412, 370502

A packet switch has a switching unit (SU) for switching packets between network links and a computing unit (CU) connected to the SU through a network link for implementing software control functions over the SU. The SU is formed of different functional components interconnected by generic buses. The components communicate with one another using program data units (PDUs) that are formatted and transmitted according to a shared device protocol. The communication between the components occurs by placing PDUs in bus frames that are passed from component to component. Information is exchanged between the components by adding information to or dropping information from the fields of the PDUs, or by concatenating new fields to the PDUs, as the frames pass from component to component. By using a generic bus to implement PDU-based interconnections within the SU, all the components are forced to support a common interface. Changes to the implementations of any components interface can thus be accommodated by changing the PDU format as opposed to changing the interfaces of connected components.

6683887, Jan 27, 2004

Dec 16, 1999

09/465352

Tony Huang - Santa Clara CA
Prakash Appanna - Fremont CA
Jensheng Lee - Petaluma CA
Hamid Baradaran - Novato CA
Hans Christian Mogensen - Petaluma CA
James Lotz - Napa CA
Tom Kwang-Tsai Koai - Fremont CA
Osama Bahgat - Petaluma CA

Alcatel USA Sourcing, L.P. - Plano TX

H04J 316

370466, 370487, 370490, 370506, 370510, 370518

An asymmetrical digital subscriber line (ADSL) downstream high speed cell bus interface protocol allows ADSL cell packets to be transmitted downstream from an ADSL bank control unit (ABCU) to a plurality of ADSL line units at a high rate of downstream throughput with flexible and efficient allocation of bandwidths and reduced error probability. The frame boundaries of an ADSL frame are derived from a conventional subscriber bus interface (SBI) frame for carrying conventional narrowband plain old telephone service (POTS) traffic, thereby allowing the ABCU and the ADSL line units to be implemented in existing channel banks with standard channel bank backplane traces.

6262985, Jul 17, 2001

Mar 30, 1998

9/050129

Tony Huang - Novato CA
John Edward Vincent - Ottawa, CA
James Leslie Watchorn - Nepean, CA
Paul Fong-Yan Hung - Stittsville, CA
Osama Bahgat - Petaluma CA
Gary Depelteau - Ottawa, CA
James McLaughlin - Nepean, CA

Nortel Networks Limited - Montreal

H04L 1250

370397

Methods and apparatus are described for translating identifiers that are used by computers to reference various entities such as data structures, external objects, or connections in a telecommunications network, from a bulkier less manageable format to a smaller more manageable format. Such translations are carried out to reduce the needless processing and memory demands that are made of a localized set of components when the large identifiers the set receives from other components include fields that none of the members of the set need to access. The invention is centerd around a two-stage look-up method wherein an inputted external identifier is divided into two parts. The first part of the inputted external identifier is used as an address into a first look-up table that contains base-addresses of a second look-up table. The second part of the inputted external identifier is used as an offset-address into the second look-up table. The offset-address and the base-address are combined to access the second look-up table, which contains all the internal identifiers.

2016029, Oct 6, 2016

Mar 31, 2015

14/675482

- Tokyo, JP
Gabor SZITA - Mountain View CA, US
Tony HUANG - San Jose CA, US
Gary W. CALFEE - Santa Clara CA, US

G11B 5/596
G11B 20/12

A reference spiral is written on a recording surface of a hard disk drive. By launching writing of fine guide spirals from a launch point that is disposed on a pre-existing coarse guide spiral, writing of the fine guide spiral can be launched in response to a write head crossing the pre-existing coarse guide spiral, rather than in response to a precisely timed event. To enable launch points being disposed on pre-existing coarse guide spirals, launch points are not all located at the same radial position on the recording surface.