Google.com. Software Engineer  Sep 2001-Feb 2002

• I wrote phython scripts that generated configurations of machines for production and crawl, including optimal assignment of machines to roles using a mysql database of machine characteristics. The software was written as a collection of software modules using python classes. Different productions sites, and the crawl used rules that mapped roles to hardware requirements, and were instantiated from a factory class.
• I wrote a C++ program for distinguishing email from other web pages.

CacheFlow Inc. Member of the Technical Staff  Nov 1999-Aug 2001

• Next Generation Object Store for CDN system based on NetBSD - I designed and implemented an in-memory cache for very fast access and low latency, with a large tree to store the namespace, and http objects in kernel memory. It interfaces with a kernel HTTP layer using asynchronous events. I designed and implemented locking and synchronization for this store, so multiple attempts to update an object would be blocked and coordinated.
• Windows Media Cache/ QuickTime RTSP/RTP Media Cache - I prototyped a system for connecting and recording digital media based on the Darwin Streaming Server for QuickTime. I reversed engineered Windows Media transport and headers so that content could be cached
• New 1U hardware platform for cache appliance I diagnosed and fixed a broken piece of hardware, that had cooling and mechanical problems, and a broken bios. I worked around broken hardware for a front panel display, and broken environmental chips with driver changes.

Silicon Graphics. Member of the Technical Staff (Core Design) July 1994-Nov 1999

• Desktop Graphics Jan 1997-Nov 1999  I worked on our next high speed desktop graphics product. My responsibility included defining parts of the DMA and graphics front end processor. After the hardware arrived, I found several critical hardware problems and found ingenious software workarounds. I devised a lock free method for the on board graphics memory manager. I changed our kernel texture manager software. I managed software patches for Alias/Wavefront and other key independent software vendors.
• Digital Media Jul 1994-Dec 1997 Octane and Impact Compression project lead. I pushed the project from inception to release on three different platforms. I worked on other Digital Media applications, defining many aspects of the hardware and the structure of the device drivers. After another programmer quit, I rewrote many parts of the micro code on the board. I worked with Earthwatch,  Avid, and other customers to make the system software meet their requirements.

Digital Equipment Systems Research Center Oct 1989-June 1994 

I worked on a replicated reliable file system, compressed log based file system, micro-kernel operating system, ATM switch, JPEG decoder/encoder, TCP/IP stack for TAOS operating system.

Sun Microsystems, Inc. Oct 1988-Oct 1989 

Worked on initial SVR4 kernel with ATT Bell Labs, NIS (yellow pages), Remote Procedure Calls, Internet Protocols, Network File System.

Patents

US05818613 System and method for color space conversion

Research cited in patent US05572709 Using dynamically-linked libraries to add side effects to operations

Papers

• New-Value Logging in the Echo Replicated File System
• A Coherent Distributed File Cache With Directory Write-behind
• The Echo Distributed File System
• On-line Data Compression in a Log-structured File System
• High Speed Switch Scheduling for Local Area
• Polynomial Methods for determining Structure From Motion

Education 

• PhD. Computer Information and Control Engineering, University of Michigan, Ann Arbor MI, June 1988 Thesis "Polynomial Methods for Structure from Motion", Advisor Ramesh Jain now at UCSD. I published several computer vision papers. 
• MS Computer Science Aug 1982
• BA Mathematics/Computer Science Jun 1980 Wayne State University, Detroit MI
• Evening MBA program, Haas School of Business, University of California, Berkeley 2001

Speak and read Japanese.