THOMAS DOUGLAS WATSON, M.D.
Medical Practice at Forest Ln, Dallas, TX
License number
Texas D8475
Category
Medical Practice
Type
Specialist
Address
Address
7777 Forest Ln SUITE B-238, Dallas, TX 75230
Phone
(972) 566-6100
Professional information
Avoiding Mapping Conflicts In A Translation Look-Aside Buffer
US Patent:
6567907, May 20, 2003
Filed:
Oct 19, 2000
Appl. No.:
09/691973
Inventors:
Robert Bruce Aglietti - San Jose CA
Kenneth Mark Wilson - San Jose CA
Thomas Lee Watson - Dallas TX
Kenneth Mark Wilson - San Jose CA
Thomas Lee Watson - Dallas TX
Assignee:
Hewlett-Packard Development Company L.P. - Houston TX
International Classification:
G06F 1200
US Classification:
711206, 711203, 711216, 711220
Abstract:
A computer system with mechanisms for avoiding mapping conflicts in a translation look-aside buffer. A memory manager in the computer system allocates a virtual address to a process by determining a set of previously allocated virtual addresses for the process and selecting the virtual address such that the mapping of the virtual address to the translation look-aside buffer does not conflict with any of the previously allocated virtual addresses.
Parallel Processing Computer System Interconnections Utilizing Unidirectional Communication Links With Separate Request And Response Lines For Direct Communication Or Using A Crossbar Switching Device
US Patent:
5577204, Nov 19, 1996
Filed:
Dec 15, 1993
Appl. No.:
8/168531
Inventors:
Tony M. Brewer - Dallas TX
Thomas L. Watson - Dallas TX
David M. Chastain - Plano TX
Thomas L. Watson - Dallas TX
David M. Chastain - Plano TX
Assignee:
Convex Computer Corporation - Richardson TX
International Classification:
G06F 1300, G06F 1314
US Classification:
39520001
Abstract:
There is disclosed a shared multiprocessing system with several nodes, or processing units, interconnected together for communication purposes by a dual channeled crossbar switch. Several such multichannel crossbar switches can be linked together to form a large cohesive processing system where processing units from one node can access memory from another node on the same crossbar or from another node on a different crossbar. The interconnection between crossbars is accomplished by a circular ring. In operation, the system allows for long memory latencies while not increasing the length of short (local) memory latencies. This is accomplished by storing the bulk of long latency requests at the local processing unit and only sending the request when there is an actual availability of communication capacity to handle the long latency request.
Parallel Processing Computer System Having Shared Coherent Memory And Interconnections Utilizing Separate Undirectional Request And Response Lines For Direct Communication Or Using Crossbar Switching Device
US Patent:
5859975, Jan 12, 1999
Filed:
Aug 9, 1996
Appl. No.:
8/695266
Inventors:
Tony Mahlon Brewer - Dallas TX
Thomas Lee Watson - Dallas TX
David Michael Chastain - Plano TX
Thomas Lee Watson - Dallas TX
David Michael Chastain - Plano TX
Assignee:
Hewlett-Packard, Co. - Palo Alto CA
International Classification:
G06F 1314, G06F 1300
US Classification:
39520043
Abstract:
There is disclosed a shared multiprocessing system with several nodes, or processing units, interconnected together for communication purposes by a dual channeled crossbar switch. Several such multichannel crossbar switches can be linked together to form a large cohesive processing system where processing units from one node can access memory from another node on the same crossbar or from another node on a different crossbar. The interconnection between crossbars is accomplished by a circular ring. In operation, the system allows for long memory latencies while not increasing the length of short (local) memory latencies. This is, accomplished by storing the bulk of long latency requests at the local processing unit and only sending the request when there is an actual availability of communication capacity to handle the long latency request.
Scalable Parallel Processing Systems Wherein Each Hypernode Has Plural Processing Modules Interconnected By Crossbar And Each Processing Module Has Sci Circuitry For Forming Multi-Dimensional Network With Other Hypernodes
US Patent:
5560027, Sep 24, 1996
Filed:
Dec 15, 1993
Appl. No.:
8/167663
Inventors:
Thomas L. Watson - Dallas TX
David M. Chastain - Plano TX
Tony M. Brewer - Dallas TX
David M. Chastain - Plano TX
Tony M. Brewer - Dallas TX
Assignee:
Convex Computer Corporation - Richardson TX
International Classification:
G06F 1516, G06F 15173
US Classification:
395800
Abstract:
A processing system 100 is provided which includes first and second hypernodes 101, each of the hypernodes 101 having at least first and second coherent interfaces 106. At least first and second interconnect network 107 are provided, the first network 107 coupling the first interfaces 106 of the first and second hypernodes 101 and the second interconnect network 107 coupling the second interfaces 106 of the first and second hypernodes 101.
Nonparametric Imaging Tracker
US Patent:
4868871, Sep 19, 1989
Filed:
Aug 13, 1987
Appl. No.:
7/085053
Inventors:
Thomas M. Watson - Dallas TX
Assignee:
Texas Instruments Incorporated - Dallas TX
International Classification:
G06K 968
US Classification:
382 1
Abstract:
A nonparametric imaging tracker is disclosed that first declares (10) a reference subimage comprising a plurality of image pixels, each pixel having a numerical light intensity level. The tracker then finds (12) a reference distribution of intensity levels in the reference subimage. A plurality of candidate subimages each having a plurality of pixels are then acquired (20). The intensity level distribution of each candidate subimage is compared to the reference distribution, and a statistic for each candidate subimage is computed based on this comparison (26, 28). One of the candidate subimages is then selected based on the value of its statistic (30, 36, 40). A preferred comparison and statistic calculation sequence includes the Kolmogorov-Smirnov test.