David Mccracken Email & Phone Number

Developed C++ Win32 API interactive enumerated and curve function aspheric lens design programs based on differential calculus and refraction principles. Invented new mathematical proofs for deterministic lens calculations using the interactive program to discover roots of eighth-degree (and higher) polynomials.

In-depth study of various software topics, including Linux and Posix network and IPC; BASH and Windows WSH scripting; and fundamental algorithms. Developed Windows and Linux utilities. Formalized project history web standards. Improved touch pointer program in embedded ARM C and Win32 C++.

San Jose, Ca, Us

Developed firmware and hardware for capacitive touch devices with ARM and MIPS CPUs and Android/Linux/Windows touchscreen drivers. Developed Windows program (Win32 GUI with USB-HID driver) with NXP LPC1342-based USB, I2C, SPI data acquisition system to support general touch and gesture algorithm development. Developed original DSP algorithms for multi-term acceleration, anti-jitter, touch/untouch position stabilization, and sub-perceptive gesture analysis. Four pending patents related to these algorithms and for low-noise, ultra-high-resolution differential capacitive touch device. Designed Subversion-based version control system integrating legacy and new branches into a unified schema with command-line scripts, Eclipse plugin (Subclipse), and TortoiseSVN interfaces.

Designed and implemented drivers, interface libraries, and multi-lingual (English, European, Chinese, and Japanese) applications (including installers, co-installers, control panels, and property sheets) for USB (HID, isochronous, and vendor-specific) and serial touchscreens for Windows XP, Vista, XP embedded, Tablet PC, and CE. Invented driver-based means for a USB-HID mouse device touchscreen to mimic a Tablet PC pen device; edge calibration to improve touchscreen linearity and to automate edge acceleration configuration; driver-based multi-touch for resistive and capacitive touchscreens; and touch-specific UI widgets. Wrote XP-batch scripts to automate building release packages for WinCE 4.2, 5.0, and 6.0 for X86, ARM, and MIPS from a single code base. Wrote Perl scripts to manage multi-lingual database.

Designed and implemented (in C++, x86 asm, 68K asm, lex, and yacc) clinical instrument development system, including self-configuring robot network, distributed multi-processing operating system, robot control language with dynamically configurable compiler, Windows-based (Win32 API) interactive debugging system. Windows 9x/NT/2K/XP universal device driver for high-speed serial and parallel communication with content-based routing and RDMA (Remote Direct Memory Access). Windows-based instrument controller with embedded XML, FCS (Flow Cytometry Standard), and proprietary databases; real-time data plotting; automatic code and dialog generation from declarative instrument definition; interactive help using MS word as document server controlled remotely via DDE. Stepper motor controller for synchronized operation of 20 motors using one CPU (MC68340) and FPGA (EPF10K30). Motor control language and compiler.

Planned and directed software development of the CD3200 hematology analyzer. Developed multi-domain, hierarchical software/firmware version control system using PolyMake as a job control language to automate project rules for programming MC68340, I8051, Pentium, MC6809, and FPGAs in C, Assembler, VHDL, and Palasm. Developed run-time selectable Japanese and European languages user interface under English MSDOS. Designed and wrote robotics control language compiler using BISON and FLEX; embedded HTTP server (on FTP's PC/TCP stack) with dynamic HTML page creation; MS-Windows-based visual algorithm development program. Led 10 software engineers.