Chin F Lee

US Patent:

6389027, May 14, 2002

Filed:

Aug 25, 1998

Appl. No.:

09/139797

Inventors:

Chin Lee - Poughkeepsie NY
Bruce H. Ratcliff - Red Hook NY
Stephen R. Valley - Valatie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04J 316

US Classification:

370401

Abstract:

A computer program product for use with a computer system having a host and a plurality of clients coupled to one another via a local area network (LAN), to provide a multicasting of messages using a special command set. First computer readable code means is generated for issuing a first special command to add a new IP multicast address providing a group multicast address and an IP multicast address. Then computer readable code means is created for entering said special control command in a multicast routing table, one entry per connection request received. Computer readable code means is then provided for a use count mechanism for keeping track of numbers of communication stacks which have registered with a certain IP multicast address. Also computer readable code means is generated for comparing all inbound IP packets destined for an IP multicast address with said entries in said table and routing all matches to their appropriate communication stacks.

US Patent:

6490285, Dec 3, 2002

Filed:

Aug 25, 1998

Appl. No.:

09/139948

Inventors:

Chin Lee - Poughkeepsie NY
Bruce H. Ratcliff - Red Hook NY
Stephen R. Valley - Valatie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 1256

US Classification:

37039531, 370401, 370432

Abstract:

A multicasting apparatus that broadcasts messages to at least some of the clients in a computing network environment having a plurality of clients and at least one host connected to these clients via a gateway device. A multicast routing table is created for registering any host and clients requesting registration. The table will include one entry per host/client and includes their relevant information. A connectivity platform is used for controlling all communications so that all information packets is first received by the platform. Upon the receipt of a packet, the table is searched and if an match is found the packet will be routed using the entry information; otherwise, the packet will be dropped.

US Patent:

6600743, Jul 29, 2003

Filed:

Aug 25, 1998

Appl. No.:

09/140180

Inventors:

Chin Lee - Poughkeepsie NY
Bruce H. Ratcliff - Red Hook NY
Stephen R. Valley - Valatie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L 1228

US Classification:

370390, 370401

Abstract:

A method of multicasting messages in a computing network environment having at least one host and a plurality of clients connected and in processing communication with one another via a gateway device. Host(s) and client(s) requesting registration will be registered and their information will be entered in a routing table, one entry dedicated to each host or client. A connectivity platform controls all communication between the host and the client(s) by receiving all information packets. The Routing table is then searched and the packets are distributed accordingly to their owner once a matching entry is found. If a matching entry is not found the packet will be dropped.

US Patent:

6654812, Nov 25, 2003

Filed:

Oct 15, 2001

Appl. No.:

09/977799

Inventors:

Paul M. Gioquindo - Poughkeepsie NY
Chin Lee - Poughkeepsie NY
Bruce H. Ratcliff - Red Hook NY
Stephen R. Valley - Valatie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15173

US Classification:

709236, 370466

Abstract:

In a mainframe class data processing system having multiple logical partitions and a port to a network, a host-network interface is established for reducing network overhead at the multiple partitions. The host-network interface includes, for example, a host channel connection coupling the multiple partitions of the host system to a communications adapter having a network device driver for each network coupled to the adapter. The adapter also includes an address resolution protocol (ARP) cache designed to hold predetermined media headers for the clients coupled to the network(s) for use in forwarding an internet protocol (IP) datagram across the network to one of the clients from a partition of the host system. Provision is also made for partition-to-partition communication of IP datagrams by storing IP addresses of the logical partitions as HOME addresses in the ARP cache of the adapter.

US Patent:

54228930, Jun 6, 1995

Filed:

Aug 4, 1994

Appl. No.:

8/286060

Inventors:

Thomas A. Gregg - Highland NY
Joseph M. Hoke - Millerton NY
Albert Ing - Wappingers Falls NY
Chin Lee - Poughkeepsie NY

Assignee:

International Busines Machines Corporation - Armonk NY

International Classification:

G06F 1100

US Classification:

371 32

Abstract:

A system and method for asynchronously transmitting data across fibers in a serial manner. Frames are provided as a mechanism to transmit associated data serially and tie the data being transmitted to a particular buffer set. Each buffer set maintains a state that keeps track of the progress and sequence of received frames. When transmission errors occur in the frames, the errors may affect only the information field and there is enough information in the header to identify the frame. A request can then be sent back to the other end of the fibers to retransmit the frame. Certain information in the frame header is not used to identify the frame, but is used to control the transfer of frames and identify lost frames. When a frame information field is damaged by transmission errors, this header information is retained by the receiver of the damaged frame. Retaining this information at the receiver of the damaged frame frees the sender for storing it during the transmission of each frame.

US Patent:

63276216, Dec 4, 2001

Filed:

Aug 25, 1998

Appl. No.:

9/139684

Inventors:

Chin Lee - Poughkeepsie NY
Bruce H. Ratcliff - Red Hook NY
Stephen R. Valley - Valatie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1516

US Classification:

709227

Abstract:

A method in a computing network environment for host partition computers to share a multicast communication adapter connected to a local area network. Each host partition sends information identifying the host application as well as a multicast addressing protocol to the shared multicast communication adapter. The communication adapter registers the information and directs inbound multicast packets from the LAN to the appropriate host partition application. In a preferred embodiment, the communication adapter registers the information according to the IP multicast address. In a preferred embodiment, a counter is employed in the communication adapter to maintain a count of the number of host applications that are registered. The invention further provides a method for un-registering a host partition application.

US Patent:

55091040, Apr 16, 1996

Filed:

Oct 6, 1993

Appl. No.:

8/132430

Inventors:

Chin H. Lee - New Providence NJ
Lawrence R. Rabiner - Berkeley Heights NJ
Jay G. Wilpon - Warren NJ

Assignee:

AT&T Corp. - Murray Hill NJ

International Classification:

G10L 500

US Classification:

395 265

Abstract:

Speaker independent recognition of small vocabularies, spoken over the long distance telephone network, is achieved using two types of models, one type for defined vocabulary words (e. g. , collect, calling-card, person, third-number and operator), and one type for extraneous input which ranges from non-speech sounds to groups of non-vocabulary words (e. g. `I want to make a collect call please`). For this type of key word spotting, modifications are made to a connected word speech recognition algorithm based on state-transitional (hidden Markov) models which allow it to recognize words from a pre-defined vocabulary list spoken in an unconstrained fashion. Statistical models of both the actual vocabulary words and the extraneous speech and background noises are created. A syntax-driven connected word recognition system is then used to find the best sequence of extraneous input and vocabulary word models for matching the actual input speech.

US Patent:

63341549, Dec 25, 2001

Filed:

Sep 14, 1998

Appl. No.:

9/152771

Inventors:

Paul M. Gioquindo - Poughkeepsie NY
Chin Lee - Poughkeepsie NY
Bruce H. Ratcliff - Red Hook NY
Stephen R. Valley - Valatie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15173
G06F 1516

US Classification:

709236

Abstract:

In a mainframe class data processing system having multiple logical partitions and a port to a network, a host-network interface is established for reducing network overhead at the multiple partitions. The host-network interface includes, for example, a host channel connection coupling the multiple partitions of the host system to a communications adapter having a network device driver for each network coupled to the adapter. The adapter also includes an address resolution protocol (ARP) cache designed to hold predetermined media headers for the clients coupled to the network(s) for use in forwarding an internet protocol (IP) datagram across the network to one of the clients from a partition of the host system. If not predetermined, the adapter is provided with a capability to dynamically determine the needed media header for transmission of the IP datagram across the network to the client. In Ethernet format, this dynamically determining includes forwarding an Ethernet 802.