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Bryan Colvin's Portfolio and Skills

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Bryan Colvin's Portfolio and Skills

  1. 1. Bryan Colvin Portfolio and Skills
  2. 2. Analog Design <ul><li>Audio Engineering </li><ul><li>ProAudio, Low Noise(-120dB), Consumer </li></ul><li>Power Supply </li><ul><li>Voltage: Buck, boost, inverting, isolated, Flyback
  3. 3. Current: Source, Sink, AC, charge pumps, mirrors </li></ul><li>Amplifiers </li><ul><li>Op Amps, Custom, Power, Class-AB, Class-D </li></ul><li>Filters(All configurations and implementations)
  4. 4. High Side Power Switching and monitoring
  5. 5. LT-Spice Modeling
  6. 6. Interface electronics </li><ul><li>ADC, DAC, Logic translation, Displays, isolation, Sensors
  7. 7. Video: HDMI, Component, S-Video, Composite, etc.
  8. 8. Gigabit Ethernet, RS-232, USB2.0, 1394, MIDI, AES/EBU, SPDIF, etc. </li></ul></ul>
  9. 9. PCB/Logic Design <ul><li>High Speed </li><ul><li>Impedance controlled routing, Cross Talk, EMI reduction, differential routing
  10. 10. Termination (series, shunt, thevenin, AC, series/shunt with logic translation)
  11. 11. Clock Distribution, PLL, DLL, Frequency Synthesis </li></ul><li>Signaling Standards </li><ul><li>Single Ended: TTL, CMOS, ECL, PECL, LVTTL, LVCMOS, GTL, GTL+, PCI, HSTL(I,II,III) SSTL(I,II), etc.
  12. 12. Differential: LVDS, BLVDS, Ultra LVD, SRSDS, LDT, etc.
  13. 13. Logic translation circuits, SERDES, SPI, I2C, I2S, JTAG, PCIe,SCSI,CAN,SATA </li></ul><li>PCB </li><ul><li>Low cost 2-layer to 12 layer stacks, buried vias, etc.
  14. 14. BGAs, SMT, through-hole components, DFT, DFM
  15. 15. EMI isolation moats, bridge routing, optical isolation, balans
  16. 16. Stacking rules, mechanicals, shielding, power routing/ distribution </li></ul><li>Memory </li><ul><li>DDR, DDR2, GDDR3, ROM, EEROM, FLASH, FIFO, etc. </li></ul></ul>
  17. 17. Systems Design <ul><li>Systems Modeling </li><ul><li>C++, Data throughput modeling, optimization
  18. 18. Verilog Test bench with auto regression
  19. 19. Embedded Processor verses Logic Design partition space
  20. 20. Data transport optimization </li></ul><li>Processors </li><ul><li>Custom Processor Design: DSP, IO, VLIW, multi-threaded, data-path engines, SIMD
  21. 21. Compiler for the above in (written in C++) </li></ul><li>FPGA/ASIC </li><ul><li>Memory controllers: DDR/DDR2/GDDR3
  22. 22. Interface: SPI, I2C, ADAT, I2S, UART, etc.
  23. 23. State Machines: One-hot, shift register, anticipatory decoding, partitioning, optimization, LFSR, gray-coded, state optimization software in C++, timing systems, compiled ROM using C++, high-speed optimization, asynchronous
  24. 24. FIFO, queues, cache, Multiple clock domains, synchronization circuits.
  25. 25. CRT controllers, CAM, Encryption, Compression, Multiple clock domain management </li></ul></ul>
  26. 26. Signal Processing <ul><li>Synthesizer / Music </li><ul><li>ADSR with true logarithmic decay
  27. 27. Wave Guide Synthesis modeling
  28. 28. FM synthesis engines
  29. 29. Traditional wave table engines
  30. 30. Mixer including EQ
  31. 31. Dynamic Sample Rate Conversion
  32. 32. Room modeling / reverberation
  33. 33. Effects processing </li></ul><li>General </li><ul><li>FFT engines, Sample rate conversion using odd ratios,
  34. 34. FIT / IIR / Dynamic / Adaptive filters </li></ul><li>Video </li><ul><li>H.264/VC1 Motion compensation
  35. 35. Media filters, scaling, rotation </li></ul></ul>
  36. 36. Patents 5,245,229 - Digitally controlled IC Anti-Clipping Mixer 5,307,025 - Audio power amplifier with pop prevention at turn-on and turn-off 5,468,906 - Sound synthesis model incorporating sympathetic vibrations of strings 5,557,227 - Exponential Envelope Generator 5,451,911 - Multi-Phase PLL Timing Generator 5,543,578 - Residual Excited Wave Guide 5,825,881 - Merchandising System 5,841,872 - Data Spinning Encryption System 6,041,123 - Encryption Communications System Pending – Phantom Power Supply System Pending – Current Pump System