UNITED STATES PATENT AND TRADEMARK OFFICE
`______________________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`______________________
`
`APPLE, INC.
`PETITIONER
`
`V.
`
`PAPST LICENSING GMBH & CO., KG
`PATENT OWNER
`______________________
`
`CASE IPR2016-01843
`
`U.S. PATENT NO. 6,470,399
`
`______________________
`
`DECLARATION OF DR. KENNETH FERNALD UNDER 37 C.F.R. § 42.53
`
`Papst Licensing GmbH & Co., KG.
`Petitioner - Apple, Inc.
`Patent Owner - Papst Licensing GmbH & Co., KG.
`IPR2016-01843
`EXH. 2001
`
`1
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`

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`I.
`
`TABLE OF CONTENTS
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`I.
`
`II.
`
`TABLE OF CONTENTS .............................................................................. II
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`INTRODUCTION .......................................................................................... 1
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`III. QUALIFICATIONS ....................................................................................... 1
`
`IV. COMPENSATION AND PRIOR TESTIMONY .......................................... 4
`
`V.
`
`INFORMATION CONSIDERED .................................................................. 5
`
`VI. RELEVANT LEGAL STANDARDS ............................................................ 6
`
`VII. PERSON OF ORDINARY SKILL IN THE ART ......................................... 6
`
`VIII. SUMMARY OF THE ‘399 PATENT ............................................................ 7
`
`IX. ANALYSIS AND OPINIONS ....................................................................... 8
`
`A.
`
`The ‘755 Application Supports the Claimed “Multi-purpose
`Interface” .............................................................................................. 8
`
`CONCLUDING REMARKS ....................................................................... 14
`
`EXHIBIT A: CURRICULUM VITAE OF DR. KENNETH W.
`FERNALD .................................................................................................... 15
`
`X.
`
`XI.
`
`XII. EXHIBIT B: MATERIALS CONSIDERED ............................................... 21
`
`ii
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`2
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`II.
`
`INTRODUCTION
`
`1. My name is Kenneth Fernald, Ph.D. I have been retained by counsel for
`
`Papst Licensing GmbH & Co., KG as an expert witness in the above-captioned
`
`proceeding.
`
`2.
`
`I understand that Apple, Inc. (“Petitioner”) has alleged claims 1, 3, 5, 11,
`
`and 14 of U.S. Patent No. 6,470,399 ("the ‘399 Patent") are unpatentable over the
`
`prior art cited in the above-captioned inter partes review.
`
`3.
`
`I have been asked to provide an opinion regarding the sufficiency of the
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`March 1997 German application (“the ‘755 application”) in supporting certain
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`claimed features on the ‘399 patent.
`
`III. QUALIFICATIONS
`
`4. My qualifications are summarized here and are addressed more fully in
`
`my CV attached as EXHIBIT A. I earned my Bachelor of Science and Master of
`
`Science degrees in Electrical Engineering from North Carolina State University
`
`(NCSU) in 1985 and 1987. During this period, I worked for the Space Electronics
`
`Group developing software for predicting the effects of radiation environments on
`
`integrated circuits. I also consulted for the Naval Research Laboratory (NRL). My
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`services to NRL included the design of dosimetry instrumentation and the execu-
`
`tion of radiation studies on electronic devices at various facilities around the Unit-
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`ed States. I joined NASA Langley Research Center in 1987 where I designed mo-
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`tor control instruments and firmware for ground and space station experiments.
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`5.
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`I returned to NCSU in 1988 to earn my Ph.D. in Electrical Engineering.
`
`My doctoral research efforts were funded by the National Science Foundation and
`
`focused on the development of medical systems utilizing wireless digital telemetry.
`
`My work included a thorough investigation of medical telemetry technology and
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`design of a microprocessor-based system for the fast prototyping of implantable
`
`medical instruments. I also completed the design and testing of various compo-
`
`nents of this system, including a bidirectional digital telemetry integrated circuit
`
`(IC) and a general-purpose sensor interface and conversion IC. I completed my
`
`Ph.D. in 1992, after which I joined Intermedics Inc. in Angleton, Texas.
`
`6. My responsibilities at Intermedics included system and circuit design of
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`telemetry, signal-processing, and control ICs for medical devices. Examples in-
`
`clude the design of a sensor acquisition, compression, and storage IC for implanta-
`
`ble pacemakers and defibrillators. I also worked on advanced wireless digital te-
`
`lemetry technology, control ICs for therapy delivery in defibrillators, and software
`
`development for sensor waveform compression and recovery. I left Intermedics in
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`1998 to join Analog Devices Inc. in Greensboro, NC.
`
`7. My work at Analog Devices included the design of advanced ICs for
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`wireless digital communication devices. Specific projects included the design, de-
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`bug, and testing of a base-band receiver IC for digital satellite systems. This IC
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`performed QPSK demodulation, symbol recovery, and forward-error correction for
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`high-bandwidth wireless video signals. I also performed system design for a
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`CDMA base-band transceiver IC for personal communication devices.
`
`8.
`
`I rejoined Intermedics in 1998 as the first employee of an IC design
`
`group in Austin, Texas. I continued to work on next-generation medical telemetry
`
`ICs until Intermedics was acquired by Guidant in 1999. At that time I joined Cyg-
`
`nal Integrated Products, a startup company in Austin, Texas. My responsibilities at
`
`Cygnal included the design and development of mixed-signal embedded products
`
`for industrial and instrumentation applications. Specific projects included the de-
`
`sign of a proprietary communication system for in-system debug, a proprietary
`
`clock recovery method for USB devices, and the design of numerous analog and
`
`digital circuits and systems. I remained at Cygnal until its acquisition by Silicon
`
`Laboratories Inc. in 2003, at which time I joined Zilker Labs, a start-up company
`
`in Austin, Texas, as their first VP of Engineering and later became their Chief
`
`Technical Officer.
`
`9. My responsibilities at Zilker Labs included the development of advanced
`
`IC technologies for power management and delivery for board-level electronic sys-
`
`tems. Specific duties included architecture design and firmware development for
`
`all Zilker Labs products. I left Zilker Labs in 2006 to join Keterex as their first VP
`
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`of Engineering. My responsibilities at Keterex included management of engineer-
`
`ing resources, design and layout of application-specific integrated circuits, and de-
`
`velopment of software and firmware for Keterex products. I joined Silicon La-
`
`boratories in 2010 as a Principal Design Engineer and now hold the title of Distin-
`
`guished Engineer. My responsibilities include architecture development and de-
`
`sign of 8-bit and 32-bit microcontrollers. Projects have included microcontrollers
`
`for metrology, motor control, and low-power and USB applications.
`
`10. I hold over 55 patents on technologies such as wireless telemetry for
`
`medical devices, low-power analog-to-digital converters, security in embedded
`
`systems, clock recovery in communication systems, serial communication proto-
`
`cols, and power management and conversion. I have authored or co-authored over
`
`20 articles, presentations, and seminars on topics including radiation effects in mi-
`
`croelectronics, wireless medical devices, low-power circuit design, circuit design
`
`for digital communications, microcontrollers and embedded systems, and power
`
`management. I am also a co-author of the PMBus™ Power System Management
`
`Protocol Specification.
`
`IV. COMPENSATION AND PRIOR TESTIMONY
`
`11. I am being compensated at a rate of $350 per hour for my work in this
`
`matter. I am being reimbursed for reasonable and customary expenses associated
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`with my work in this investigation. My compensation is not contingent on the out-
`
`come of this matter or the specifics of my testimony.
`
`12. Within the last five years, I have testified by deposition in the following
`
`cases (with emphasis indicating the represented party):
`
` Papst Licensing GmbH & Co., KG v. Apple, Case 6:15-cv-1095, deposed
`December 1, 2016.
`
` InfoBionic, Inc. v. Braemar Manufacturing, LLC, Cases IPR2015-01679
`and IPR2015-01688, deposed July 26, 2016.
`
` Luminara Worldwide, LLC v. Liown Electronics Co. Ltd., et al., Civil No.
`14-cv-03103 (SRN/FLN), deposed March 30, 2016.
`
` Dane Technologies, Inc. v. Gatekeeper Systems, Inc., Civil No. 12-cv-
`2730-ADM-AJB, deposed April 21-22, 2015 and August 2014.
`
`
`
`V.
`
`INFORMATION CONSIDERED
`
`13. My opinions are based on my years of education, research, and experi-
`
`ence, as well as my investigation and study of relevant materials. In forming my
`
`opinions, I have considered the materials I identify in this report and those includ-
`
`ed in EXHIBIT B of this report.
`
`14. This report represents only those opinions I have formed to date. I re-
`
`serve the right to revise, supplement, and/or amend my opinions stated herein
`
`based on any new information and on my continuing analysis of the materials al-
`
`ready provided.
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`VI. RELEVANT LEGAL STANDARDS
`
`15. My analysis discussed in this declaration relates to the sufficiency of the
`
`written description of the ‘755 application. I have been advised that the test for
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`sufficiency of the written description is whether the disclosure reasonably conveys
`
`to those skilled in the art that the Inventor had “possession” of the claimed subject
`
`matter. I understand that “possession” must be demonstrated by the material with-
`
`in the four corners of the ‘755 application. In other words, the ‘755 application
`
`must describe an invention understandable to a person of ordinary skill in the art
`
`and show that the Inventor actually possessed what is claimed.
`
`VII. PERSON OF ORDINARY SKILL IN THE ART
`
`16. I understand the invention date of ‘399 Patent to be March 4, 1997, based
`
`on the ‘755 application date listed on the face of the ‘399 Patent. A person of or-
`
`dinary skill in the art (“POSITA”) is a hypothetical person of ordinary creativity
`
`having “the capability of understanding the scientific and engineering principles
`
`applicable to the pertinent art.” Ex parte Hiyamizu, 10 USPQ2d 1393, 1394
`
`(B.P.A.I. 1988). After reviewing the technology of the ‘399 Patent, I consider the
`
`relevant art to be, generally speaking, “the transfer of data and in particular to inter-
`
`face devices for communication between a computer or host device and a data
`
`transmit/receive device from which data is to be acquired or with which two-way
`
`communication is to take place.” Exhibit 1001 (‘399 Patent) at 1:9-13. I consider
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`examples of a person of ordinary skill in the art, as of March 4, 1997, to include a
`
`person with at least a bachelor’s degree in a related field such as computer engineer-
`
`ing or electrical engineering and at least three years of experience in the design, de-
`
`velopment, and/or testing of hardware and software components involved with data
`
`transfer or in embedded devices and their interfaces with host systems. Alternatively,
`
`a POSITA may have five or more years of experience in these technologies, without
`
`a bachelor’s degree.
`
`VIII. SUMMARY OF THE ‘399 PATENT
`
`17. The ‘399 Patent generally describes apparatus and methods for achieving
`
`high data transfer rates for data acquisition systems to a host computer, without re-
`
`quiring an end user to install specialized software for each host computer system.
`
`See, e.g., Exhibit 1001 (‘399 Patent) at 4:23-27.
`
`18. At the time of the invention, there were an increasing number and variety
`
`of data acquisition systems with the ability to capture high volumes of information,
`
`and an increasing demand to transfer that information to commercially available,
`
`general purpose computers. Id. at 1:20-54. However, due to the hierarchical na-
`
`ture of computer system software, device-specific drivers generally provide higher
`
`data transfer rates, while more general-purpose drivers support a wider variety of
`
`devices at the cost of lower performance. Id. at 1:15-2:14. This is true today, as
`
`well as at the time of the invention. The invention of the ‘399 patent allows a data
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`acquisition system to identify itself as a type of device normally found in host
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`computers in order to leverage the capabilities of drivers for such devices. Id. at
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`5:6-20. Accordingly, by using the invention, users could obtain high data transfer
`
`performance without loading specific software that may otherwise be required to
`
`support a given data acquisition device on a given host computer system. Id. at
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`3:25-28, 4:23-36, 8:23-59, 9:23-28, 10:10-14, 12:23-40.
`
`IX. ANALYSIS AND OPINIONS
`
`19. It is my understanding that Petitioner contends the ‘399 patent is not enti-
`
`tled to priority benefit of the ‘755 application because that application allegedly
`
`does not provide sufficient written description for the challenged claims. Paper 2
`
`(Petition) at 9. In the following sections I discuss my analysis and opinions for
`
`each of the claimed features for which Petitioner contends lacks support by the
`
`‘755 application.
`
`A. The ‘755 Application Supports the Claimed “Multi-purpose Inter-
`face”
`
`20. Based on the disclosure of the ‘755 application, it is my opinion that a
`
`person of ordinary skill in the art would understand the Inventor to be in posses-
`
`sion of an invention including a connection to a host system via a multi-purpose
`
`interface. A single-purpose interface is an interface designed to connect to one
`
`specific type of device. For example, a classic floppy drive controller is one such
`
`single-purpose interface. A host computer simply assumes that a floppy disk drive
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`(“FDD”) is attached to its floppy disk drive controller. Exhibit 1001 (‘399 Patent)
`
`at 3:15-17. As such, a single-purpose interface generally requires no means of de-
`
`termining what type of device is attached – the host simply assumes any attached
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`device is of the expected type. The ‘755 application makes it clear that such a sin-
`
`gle-purpose interface is undesirable, stating “it is desirable that an interface be so
`
`flexible that very different electrical or electronic systems can be linked to a host
`
`device using an interface.” Exhibit 1050 (‘755 application) at 002 (underline add-
`
`ed).
`
`21. As an alternative to a single-purpose interface, the ‘755 application de-
`
`scribes using a host “input/output interface” which supports the ability of the host
`
`to determine what type of device is attached. See, e.g., Exhibit 1050 (‘755 applica-
`
`tion) at 001 (“when the host device makes a request via the first coupling device
`
`[of the input/output interface] …”), and at 003 (“in the case of a request from the
`
`host device via the first connecting device, which affects the type of device that is
`
`linked to the host device,” “[when the host system is booted] normal BIOS routines
`
`output a command to each input/output interface … recognized among experts as
`
`an ‘INQUIRY’ command”). A person skilled in the art would understand an in-
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`put/output interface which supports multiple device types, and as a consequence
`
`has the ability to determine what device type is attached, as a multi-purpose inter-
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`face.
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`22. Further, the ‘755 application describes at least two well-known multi-
`
`purpose interfaces, the Small Computer System Interface (“SCSI”) and the En-
`
`hanced Parallel Port interface (“EPP”), also known as the IEEE 1284 interface.
`
`See, e.g., Exhibit 1050 (‘755 application) at 002 and 003. The SCSI interface de-
`
`scribed in the ‘755 application is a multi-purpose interface which can connect to a
`
`variety of devices. The SCSI standard states “SCSI-2 includes command sets for
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`magnetic and optical disks, tapes, printers, processors, CDROMs, scanners, medi-
`
`um changers, and communications devices.” Exhibit 1012 (ANSI INCITS 131-
`
`1994 [S2013]) at Abstract. The SCSI standard further describes the ability to de-
`
`termine which type of device is attached, stating “[t]he formalized sequence of re-
`
`quests identify the type of attached SCSI-2 device, the characteristic of the device,
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`and all the changeable parameters supported by the device.” Exhibit 1012 (ANSI
`
`INCITS 131-1994 [S2013]) at 6 (underline added). Further, the SCSI standard
`
`states:
`
`ed).
`
`
`
`The INQUIRY command may be used by a system to de-
`termine the configuration of the SCSI bus. Target devices
`respond with information that includes their type and
`standard level and may include the vendor’s identifica-
`tion, model number and other useful information.
`
`Exhibit 1012 (ANSI INCITS 131-1994 [S2013]) at 85 (underline add-
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`23. In addition, the EPP interface described in the ‘755 application is also a
`
`multi-purpose interface which can connect to a variety of devices and has the abil-
`
`ity to detect what type of device is attached. The IEEE 1284-1994 standard de-
`
`scribes the EPP interface as providing “bidirectional parallel communications be-
`
`tween hosts and printers or other peripherals.” Exhibit 2004 (IEEE Std 1284-1994)
`
`at Abstract (underline added). This standard further describes, in part, the purpose
`
`of the EPP interface as follows:
`
`This standard was developed to provide an open path for
`communications between computers and more intelligent
`printers and peripherals. The availability of a standard
`bidirectional protocol will encourage the development of
`new peripherals that return significant data, as well as
`basic status, to the host.
`
`Exhibit 2004 (IEEE Std 1284-1994) at 1 (underline added).
`
`24. The EPP standard further describes the ability to determine what type of
`
`device is attached:
`
`Prior to the first peripheral-to-host transfer, the host does
`not know the type of device to which it is attached, or
`how to communicate with it. The device identification
`option allows the host to request ID information from the
`peripheral using one of the IEEE 1284 reverse data trans-
`fer modes (Nibble, Byte, or ECP). The peripheral identi-
`fies itself by sending a sequence of bytes to the host indi-
`cating its device type, device family, and language capa-
`bilities.
`
`Exhibit 2004 (IEEE Std 1284-1994) at 14 (underline added).
`
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`25. As explained above, the ‘755 application describes a variety of multi-
`
`purpose interfaces and expressly utilizes features common to multi-purpose inter-
`
`faces, such as the ability to request the identity of the attached device, to achieve
`
`the goals of the invention. As such, it is my opinion that the ‘755 application
`
`demonstrates the Inventor possessed an invention including a multi-purpose inter-
`
`face, as understood by a person of ordinary skill in the art.
`
`26. In what appears to be an attempt to identify the ‘399 patent’s inclusion of
`
`the term “multi-purpose interface” as new material, Petitioner contends that “the
`
`inventor understood multi-purpose interfaces as a replacement for BIOS routines
`
`integrating classical input/output interfaces.” Paper 2 (Petition) at 14 (underline
`
`added). I disagree. The evidence discussed below shows the Inventor understood
`
`the multi-purpose interface could be serviced by BIOS routines, a separate driver
`
`installed on the host system, or a combination of both.
`
`27. First, a citation offered by Petitioner actually contradicts the contention
`
`that the Inventor understood the drivers for a multi-purpose interface to be separate
`
`from the BIOS. Specifically, the ‘399 patent states “drivers for multi-purpose in-
`
`terfaces can also already be integrated in the BIOS of the host device.” Exhibit
`
`1011 (‘399 patent) at 4:52-54 (underline added). This material was cited by Peti-
`
`tioner, yet Petitioner neglected to comment on the underlined phrase. Petition at
`
`13. Further, the statement immediately following this material reads “[i]t is of
`
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`course also possible to use BIOS routines in parallel with the specific driver soft-
`
`ware for the multi-purpose interface.” Exhibit 1001 (‘399 patent) at 4:56-58. The
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`‘399 patent further describes using either BIOS routines or separate drivers for op-
`
`erating the multi-purpose interface, stating “communication between the host de-
`
`vice and the multi-purpose interface can take place not only via drivers for in-
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`put/output device[s] customary in a host device which reside in the BIOS system of
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`the host device but also via specific interface drivers which, in the case of SCSI in-
`
`terfaces, are known as multi-purpose interface ASPI (advanced SCSI programming
`
`interface) drivers.” Exhibit 1001 (‘399 patent) at 11:9-15.
`
`28. As indicated by the evidence cited above, the Inventor clearly did not un-
`
`derstand that drivers for a multi-purpose interface would necessarily replace BIOS
`
`routines. In fact, it is patently clear that the Inventor describes the multi-purpose
`
`interface drivers as residing solely in the BIOS, residing as separately installed
`
`drivers, or operating as a parallel combination of both. As such, Petitioner’s incor-
`
`rect contention fails to show that the ‘755 application does not support the multi-
`
`purpose interface requirements of the claims of the ‘399 patent.
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`X.
`
`CONCLUDING REMARKS
`
`29. For the purpose of preparing this report, I have reviewed all the materials
`
`and conducted analyses that I believe are appropriate given the evidence available
`
`at this time.
`
`I understand that I will have the right to supplement or amend this re-
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`port if additional evidence or information pertinent to my opinions becomes avail-
`
`able, and I plan to do so if necessary.
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`16
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`

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`XI. EXHIBIT A: CURRICULUM VITAE OF DR. KENNETH W. FERNALD
`
`DEGREES
`Ph.D., Electrical Engineering, North Carolina State University, 1992
`Dissertation: "A Microprocessor-Based System for the Fast Prototyping of Implantable Instru-
`ments for Biomedical Research Applications"
`M.S., Electrical Engineering, North Carolina State University, 1987
`Thesis: "Simulation of Circuit Response to Proton Environments"
`B.S., Electrical Engineering, North Carolina State University, 1985
`
`CONTINUED EDUCATION
` Analog Bipolar Cell Design, 1997
` Spread-Spectrum Wireless, IS-95 and Third Generation CDMA Digital Cellular
`Communications, 1997
` RF Design for Personal Communication Systems, 1995
` Switched Capacitor Circuit Design, 1994
` Low-Power CMOS Circuit Design, 1993
` Cardiac Pacing Technology, 1992
` Digital Signal Processing, 1988
` Adaptive Filter Design, 1987
`
`EXPERT WITNESS WORK (last five years)
` Papst Licensing GmbH & Co., KG v. Apple, Case 6:15-cv-1095, deposed Decem-
`ber 1, 2016.
` InfoBionic, Inc. v. Braemar Manufacturing, LLC, Cases IPR2015-01679 and
`IPR2015-01688, deposed July 26, 2016.
` Luminara Worldwide, LLC v. Liown Electronics Co. Ltd., et al., Civil No. 14-cv-
`03103 (SRN/FLN), deposed March 30, 2016.
` Dane Technologies, Inc. v. Gatekeeper Systems, Inc., Civil No. 12-cv-2730-ADM-
`AJB, deposed April 21-22, 2015 and August 2014.
`
`
`EXPERIENCE
`Consulting (Part-time)
`Provide technical analysis and design services to various clients. Projects include:
` IP analysis on topics such as circuit and system design, embedded systems, wired and
`wireless networking, firmware and software, consumer electronic platforms, etc.
` Design, fabrication, and testing of a high-speed USB isolator
` Software and firmware development for a USB-to-SPI/SMBus Serial Adapter
` Analysis and architecture design for a high-density, nano-device memory platform
` Analysis for a massively dense 3D integrated memory
` Design of a radiation-tolerant, nano-device memory IC
`
`
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`
`Distinguished Engineer, Silicon Laboratories, Inc.
`April 2010 to Present
`Lead the design of 8-bit and 32-bit microcontroller integrated circuits. Responsible for
`IC architecture, peripheral design, and project management. Personally designed an all-
`digital PLL, USB and USART peripherals, timing and memory logic, low-power charge-
`pumps, and other analog, mixed-signal and digital circuits and systems.
`
`Vice-President, Engineering, Keterex, Inc.
`August 2006 to April 2010
`Led the design of mixed-signal integrated circuits and systems. Personally designed a
`mixed-signal audio playback IC, a 500V ballast controller and half-bridge driver, a small-
`footprint boost controller for DDR memory platforms, and an ultra low-power signal pro-
`cessing IC. Personally developed firmware (in C) and scripting/IDE software (in C and
`Java) for serial communications and audio processing.
`
`CTO / Vice-President, Engineering, Zilker Labs, Inc.
`December 2003 to August 2006
`Led the design of innovative digital power-management products. Established the IC de-
`sign team and infrastructure. Co-authored the PMBus Specification. Personally per-
`formed product definition, IC architecture and RTL design, and firmware development.
`
`Principal Design Engineer, Cygnal Integrated Products, Inc.
`March 1999 to December 2003
`System and circuit design for mixed-signal microcontroller products. Served as the archi-
`tect and team leader for several products, all of which sampled 1st silicon. Individual de-
`sign efforts included linear regulators, supply monitors, crystal and precision RC oscilla-
`tors, voltage references, a USB clock recovery system, a proprietary serial debug inter-
`face, a µP instruction cache, a micropower real-time clock, and digital interface, control,
`and timing peripherals. Designed the platform and firmware for host-to-device commu-
`nications and debugging.
`
`Senior IC Design Engineer, Analog Devices, Inc.
`June 1995 to June 1998
`Team Leader for development of a CDMA/AMPS Voiceband/Baseband Codec ASIC.
`Tasks included specification, interface design, top-level integration/simulation and cus-
`tomer interface. Lead Design Engineer for development of a DBS digital receiver ASIC.
`Tasks included ADC, DAC, oscillator, and PLL design, IC evaluation, and technical
`management of contractor activities.
`
`Principal Design Engineer, Intermedics, Inc.
`May 1992 to June 1995, June 1998 to March 1999
`
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`Specification, design, layout supervision, debug, and test development for high-reliability
`micropower mixed-signal CMOS ICs for implantable applications. Projects included
`wireless telemetry ICs, a waveform compression and storage IC, a flyback charging and
`shock delivery controller, ADCs, switched-capacitor filters, DC-to-DC converters, and
`reference generators.
`
`Assistant Researcher, Analog Circuits Group, NC State University
`August 1988 to May 1992
`Original research and development of an intelligent implantable wireless telemetry in-
`strument for biomedical applications, including the design, layout, and testing of mixed-
`signal CMOS ICs to provide data acquisition and wireless bidirectional digital telemetry
`functions.
`
`Systems Engineer, NASA Langley Research Center
`June 1987 to August 1988
`Designed a microprocessor-based motion controller for linear DC actuators, including
`system software and firmware development.
`
`Assistant Researcher, Space Electronics Group, NC State University
`August 1985 to May 1987
`Original research and development of a software platform (in C) for modeling the effects
`of radiation on semiconductors.
`
`Research Engineer, Naval Research Laboratory
`Summer 1986
`Designed and constructed a electronic dosimetry system for use in radiation effects ex-
`periments. Performed radiation experiments on integrated circuits at several accelerator
`facilities. Consulted on radiation effects in digital memories.
`
`SELECT ISSUED PATENTS (over 55 patents issued)
`5,522,866: Method and apparatus for improving the resolution of pulse position modula-
`tion communications between an implantable medical device and an external
`medical device
`5,548,795: Hybrid analog-to-digital convertor for low power applications, such as use in
`a implantable medical device
`5,626,625: Method and apparatus for measuring the period of response of an implantable
`medical device based upon the difference in phase between a trigger signal
`and an internal clock signal
`6,559,629: Supply voltage monitor using bandgap device without feedback
`6,738,858: Cross-bar matrix for connecting digital resources to I/O pins of an integrated
`circuit
`6,794,856: Processor based integrated circuit with a supply voltage monitor using
`bandgap device without feedback
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`6,839,795: Priority cross-bar decoder
`6,886,089: Method and apparatus for accessing paged memory with indirect addressing
`6,898,689: Paging scheme for a microcontroller for extending available register space
`6,917,658: Clock recovery method for bursty communications
`6,950,047: Method and apparatus for combining outputs of multiple DACs for increased
`bit resolution
`6,950,491: Clock circuit with fractional divide circuit
`6,956,518: Method and apparatus for subclocking a SAR analog-to-digital converter
`6,968,472: Serial data interface
`7.042.201: Digital control circuit for switching power supply with pattern generator
`7,071,733: Cross-bar matrix for connecting digital resources to I/O pins of an integrated
`circuit
`7,119,526: Processor based integrated circuit with a supply voltage monitor using
`bandgap device without feedback
`7,119,527: Voltage reference circuit using PTAT voltage
`7,171,542: Reconfigurable interface for coupling functional input/output blocks to lim-
`ited number of I/O pins
`7,250,825: Method and apparatus for calibration of a low frequency oscillator in a pro-
`cessor based system
`7,251,112: Battery protect circuit for switching circuit that switches between a supply
`and a battery
`7,256,611: Cross-bar matrix with LCD functionality
`7,292,019: Method for accurately setting parameters inside integrated circuits using in-
`accurate external components
`7,395,447: Precision oscillator for an asynchronous transmission system
`7,362,554: Electrostatic discharge (ESD) clamp using output driver
`7,343,504: Micro controller unit (MCU) with RTC
`7,492,139: Digital control circuit for switching power supply with serial data input
`7,498,962: Analog-to-digital converter with low power track-and-hold mode
`7,504,900: Integrated circuit package including programmable oscillators
`7,506,634: Ignition timing circuit
`7,568,117: Adaptive thresholding technique for power supplies during margining events
`7,589,514: Method for accurate current sensing in power converters
`7,653,757: Method for using a multi-master multi-slave bus for power management
`7,908,402: Integrated multi-function point-of-load regulator circuit
`8,289,010: Method for control of overlap times in switching power converters
`8,456,242: Frequency Locked Loop
`8,638,081: Active droop current sharing
`8,904,076: Coder with snoop mode
`8,914,624: Changing the reset state of a processor
`9,106,176: Apparatus for motor control system and associated methods
`9,160,166: Charge pump for low power consumption apparatus and associated methods
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`SELECT PUBLICATIONS & PRESENTATIONS (over 25 total)
` Retention Regulator, Silicon Laboratories Technical Symposium, 2016.
` A Boot-agnostic Power Architecture with a DCDC, Silicon Laboratories Technical Sym-
`posium, 2015.
` Energy-friendly Low Drop-out (LDO) Regulator Architectures for EFR Platforms, Sili-
`con Laboratories Technical Symposium, 2015.
` A Glitch-free Clock Multiplexer for a Resampled Clock, Silicon Laboratories Technical
`Symposium, 2015.
` Behind the Curtain: The Unseen Analog Infrastructure Inside Energy Friendly MCUs,
`Silicon Laboratories Technical Symposium, 2015.
` Circuits for Below Ground Operation of a Single Supply IC, Silicon Laboratories Tech-
`nical Symposium, 2014.
` On-chip Oscillator with 0.5% Frequency Stability for an MCU, Silicon Laboratories
`Technical Symposium, 2014.
` Staying Ahead in USB: XTAL-less and Low-power Operation, Silicon Laboratories
`Technical Symposium, 2014.
` Power Reduction Methods for a 32-bit ARM Microcontroller, Silicon Laboratories
`Technical Symposium, 2012.
` A Fast, Flexible N/M Digital Phase Locked Loop, Silicon Laboratories Technical Sympo-
`sium, 2011.
` Introduction to PMBus, Power Electronics Technology Conference, 2005.
` PMBus Implementers Forum, Power Electronics Technology Conference, 2005.
` Compensation of Digital Power Converters, IBM Power Symposium, 2005.
` A 480MHz Variable Rate QPSK Demodulator for Direct Broadcast Satellite, IEEE