Nat Ersoz
Principal Wireless Engineer at Impinj- Claim this Profile
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Topline Score
Bio
Dave Brown
Nat is an excellent embedded engineer. During the course of our work together at NeuroVista, he consistently impressed me with the level of knowledge and experience he brought to the team. Nat executed on architecting, designing, implementing and maintaining a complex code base, on the schedule he committed to. He is not afraid to dive into the schematics to help debug hardware/software issues and is skilled with the lab instruments necessary to do this. Nat is proactive in resolving bugs and is a great team player in resolving
Shyan-Ming Perng
Nat is an outstanding HW/SW engineer. While at Myrio I had the privilege to work with him closely on Java/JNI/C/C++ interface and learned a great deal from him about device drivers and MPEG videos. He is highly knowledgeable about standards, very frank and to the point, always willing to share his knowledge. Once I needed help setting up dev environment and he made me an entire copy of his dev hard drive without the slightest hesitation! I highly recommend Nat as a colleague and would be delighted to work with him again.
Dave Brown
Nat is an excellent embedded engineer. During the course of our work together at NeuroVista, he consistently impressed me with the level of knowledge and experience he brought to the team. Nat executed on architecting, designing, implementing and maintaining a complex code base, on the schedule he committed to. He is not afraid to dive into the schematics to help debug hardware/software issues and is skilled with the lab instruments necessary to do this. Nat is proactive in resolving bugs and is a great team player in resolving
Shyan-Ming Perng
Nat is an outstanding HW/SW engineer. While at Myrio I had the privilege to work with him closely on Java/JNI/C/C++ interface and learned a great deal from him about device drivers and MPEG videos. He is highly knowledgeable about standards, very frank and to the point, always willing to share his knowledge. Once I needed help setting up dev environment and he made me an entire copy of his dev hard drive without the slightest hesitation! I highly recommend Nat as a colleague and would be delighted to work with him again.
Dave Brown
Nat is an excellent embedded engineer. During the course of our work together at NeuroVista, he consistently impressed me with the level of knowledge and experience he brought to the team. Nat executed on architecting, designing, implementing and maintaining a complex code base, on the schedule he committed to. He is not afraid to dive into the schematics to help debug hardware/software issues and is skilled with the lab instruments necessary to do this. Nat is proactive in resolving bugs and is a great team player in resolving
Shyan-Ming Perng
Nat is an outstanding HW/SW engineer. While at Myrio I had the privilege to work with him closely on Java/JNI/C/C++ interface and learned a great deal from him about device drivers and MPEG videos. He is highly knowledgeable about standards, very frank and to the point, always willing to share his knowledge. Once I needed help setting up dev environment and he made me an entire copy of his dev hard drive without the slightest hesitation! I highly recommend Nat as a colleague and would be delighted to work with him again.
Dave Brown
Nat is an excellent embedded engineer. During the course of our work together at NeuroVista, he consistently impressed me with the level of knowledge and experience he brought to the team. Nat executed on architecting, designing, implementing and maintaining a complex code base, on the schedule he committed to. He is not afraid to dive into the schematics to help debug hardware/software issues and is skilled with the lab instruments necessary to do this. Nat is proactive in resolving bugs and is a great team player in resolving
Shyan-Ming Perng
Nat is an outstanding HW/SW engineer. While at Myrio I had the privilege to work with him closely on Java/JNI/C/C++ interface and learned a great deal from him about device drivers and MPEG videos. He is highly knowledgeable about standards, very frank and to the point, always willing to share his knowledge. Once I needed help setting up dev environment and he made me an entire copy of his dev hard drive without the slightest hesitation! I highly recommend Nat as a colleague and would be delighted to work with him again.
Experience
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Impinj
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United States
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Information Technology & Services
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300 - 400 Employee
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Principal Wireless Engineer
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Mar 2017 - Present
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Philips
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Netherlands
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Hospitals and Health Care
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700 & Above Employee
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Firmware Architect
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Nov 2015 - Mar 2017
Firmware Architect and technical lead a POHC. Delivering the very latest in connected Philips Sonicare oral hygiene products. Firmware Architect and technical lead a POHC. Delivering the very latest in connected Philips Sonicare oral hygiene products.
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i1biometrics
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Kirkland, WA
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Firmware Engineer
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Feb 2013 - Aug 2015
Firmware engineer for the i1B impact sensing mouthguard. Key technical contributions: - Linear acceleration sensing using the Analog Devices ADXL377 - Rotational acceleration using the ST L3GD20 MEMS gyro. - Sample buffering, synchronization and triggering. - CC1101 radio packet handler and spread-spectrum hopping schema. - Significant contributions to the (very elegant) system wide transport layer. - MSP430 USB HID and CDC class communication. - Additional Technologies: MSP430 (no OS), C Programming language, GIT. Show less
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Philips
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Netherlands
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Hospitals and Health Care
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700 & Above Employee
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Sr. Software Engineer
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Mar 2010 - Jan 2013
Integral part of the FR-3 AED software team that refactored and re-wrote the FR-3 embedded software. Individual contributions include: - Laerdal CPR sensor command, control and communication software. - Defib and CPR protocol State Machine. - Patient and device event recording. - Low level hardware interface - tasks and device drivers. Integral part of the FR-3 AED software team that refactored and re-wrote the FR-3 embedded software. Individual contributions include: - Laerdal CPR sensor command, control and communication software. - Defib and CPR protocol State Machine. - Patient and device event recording. - Low level hardware interface - tasks and device drivers.
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NeuroVista Corporation
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United States
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Medical Device
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1 - 100 Employee
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Sr. Embedded Engineer
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Jan 2008 - Mar 2010
Architect and lead firmware engineer on NeuroVista's Class 3 Implantable Medical Device, the Implantable Telemetry Unit (ITU). The ITU samples ECoG signals and transmits the data over a 2.4 GHz agile radio link. Additionally, the ITU self-manages the battery charge cycle and maintains significant self-test and monitoring functions. Technical Contributions: 1. MSP4301611 based Firmware architect and lead engineer (48 KB FLASH, 10KB RAM) 2. ITU radio based bootloader architecture: a. Nordic nRF24L01+ radio in Primary receiver mode, conforming to NeuroVista's Telemetry Interface. b. Console command, control and maintenance functions capable of reflashing the application space. c. Self-test and human safety factors based self monitoring. 3. ITU ECoG Acquisition application: a. Nordic nRF24L01 radio in primary transmitter mode, conforming to NeuroVista's Telemetry Interface. b. AD7490 ADC acquisition with innovative low sample jitter (NeuroVista patent pending). c. Charging system control and monitoring using the ST L6924D charger and TI bq27500 gas gauging devices. d. Human factors safety and thermal limits monitoring and self-test measures. Specific Design Challenges: • Low power consumption: 5 mA current draw during ECoG Acquisition. • Low sample jitter: < 50 nS p-p, adjacent sample jitter. • Nested radio interrupt architecture for SPI DMA based radio transactions. • Multi-channel radio transmitter requiring independent addressing and frequency agility. • Class 3 medical device for human implant requiring the highest reliability and robustness standards. Additional Contributions: • Helped to create the software development and test life cycle at NeuroVista for both the ITU product as well as the other embedded devices. • Authored the ITU Software Requirements Specification, Design Documentation, and Interface Control documents. • Design, development, test and risk analysis methods driven by the AAMI/IEC 62304 standard. Show less
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Digeo
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Software Development
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1 - 100 Employee
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Systems Integration Engineer
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Oct 2006 - Jan 2008
Validation and Verification programs: • Cable Labs: Open Cable Host Device • Cable Labs: Unidirectional Cable Product • DOCSIS • IEEE-1394 • Dolby Digital (AC-3) • Macrovision Validation and Verification programs: • Cable Labs: Open Cable Host Device • Cable Labs: Unidirectional Cable Product • DOCSIS • IEEE-1394 • Dolby Digital (AC-3) • Macrovision
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PortalPlayer, Inc.
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Semiconductors
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1 - 100 Employee
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Senior Principal Firmware Engineer
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Sep 2004 - May 2006
Technical Lead for Microsoft ‘Janus’ Digital Rights Management (DRM) implementation on PortalPlayer devices. Technical Contributions: 1. MTP/PTP USB device class development including performance optimization crucial to passing Microsoft's(TM) Plays For Sure(TM) performance and compliance test suite. 2. Optimizations for Janus DRM license track playback, and license storage. 3. Embedded database design and implementation. 4. Multi-core embedded operating system primitives implementation and design. 5. Secure PPI bootloader. 6. Janus, MTP, P4S performance optimization and debug, debug, and more debug... 7. Microsoft WMA decoder performance optimizations, decryption and load balancing. Show less
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Member Technical Staff
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Sep 2000 - Jul 2004
Technical Lead: Platform, device drivers, and hardware adaptation. Technical Contributions: 1. The EM84xx MPEG-2 video decoder, MPEG-1 Layer II audio, AC-3 audio decoder. 2. MPEG-2 systems layer over IP processor. 3. POSIX based PVR (Personal Video Recording) library and trick mode video controller. 4. X Video Extension for the TViA Cyberpro 5000, 5300 series graphics devices. 5. The National Semiconductor SC1200 video framebuffer, XFree86 display driver and overlay mixer. 6. X based Video Overlay manager and Java Native Interface class. 7. NTSC Line21 encoding support to the National SC1200 device driver and Tvia X display driver. 8. Geode SCx200 / Sejin keyboard/mouse/remote control driver for Linux. 9. VOD server specific to RTSP implementations. 10. Multiple vendor Conditional Access decryption architecture and interface library implementation. 11. Linux Network device driver debugging: natsemi.c and via-rhine.c Show less
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Microsoft
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United States
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Software Development
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700 & Above Employee
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Software Development Engineer
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Feb 1998 - Mar 2000
Technical Contributions: 1. ATI Rage Video capture & overlay. 2. VBI decoding: NABTS and Line 21 codec’s. 3. COM interface implementation for the DirectShow architecture (Microsoft's streaming media methodology). Technical Contributions: 1. ATI Rage Video capture & overlay. 2. VBI decoding: NABTS and Line 21 codec’s. 3. COM interface implementation for the DirectShow architecture (Microsoft's streaming media methodology).
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Senior Member Technical Staff
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May 1983 - Feb 1998
Senior Member Technical Staff, DOCSIS Cable modem development (8/1997 - 2/1998) • Program Manager for Thomson’s and the industry first DOCSIS 1.0 compliant cable modem. Senior Member Technical Staff, Technical Lead (2/1993 - 8/1997) • Lead a team of 5 engineers to adapt Thomson’s DirecTV platform to the FTTC (fiber to the curb over ATM) platform (1996-1997). • Technical Lead MPEG/Video/Audio receiver systems development (1993-1997). Member Technical Staff, DirecTV Software Development (3/1992 - 8/1993) • DirecTV platform embedded device driver development. Member Technical Staff, Technical Lead Widescreen Television (10/1990 - 3/1992) • Technical Lead for Thomson’s first North American Widescreen TV. o Analog and Digital video signal processing. o Board level PCB design and manufacture. Member Technical Staff, RF Design Engineering (5/1983 - 3/1990) Show less
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Education
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1979 - 1983
Rose-Hulman Institute of Technology
BSEE, Electrical Engineering -
1979 - 1983
Rose-Hulman Institute of Technology
BSEE, Electrical and Electronics Engineering -
1975 - 1979
Upper St. Clair HS
GED, College/University Preparatory and Advanced High School/Secondary Diploma Program
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