Paul Frenger

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Programmable, implantable and external biomedical devices (such as pacemakers, defibrillators, insulin pumps, pain management pumps, vagus nerve stimulators and others) may be vulnerable to unauthorized access, commonly referred to as “hacking”. This intrusion may lead to compromise of confidential patient data or loss of control of the device itself, which(More)
  • P Frenger
  • 2000
This paper describes a modular, extensible, open-systems design for a multiprocessor network which emulates the major functions of the human nervous system. Interchangeable hardware/software components, a socketed software bus with plug-and-play capability and self diagnostics are included. The computer hardware is based on IEEE P996.1 bus cards. Its(More)
An unusual event occurred on February 12, 2001: a man-made satellite safely landed on the surface of a twenty-one mile long hunk of space rock two hundred million miles from Earth. It then sent pictures back home to the deleriously happy engineers who had shot it into space five years earlier [1 ]. Forty-eight hours shy of Valentine's Day, the NEAR(More)
This is the second part of a two-part paper describing the author's recent experiences with robot control systems. In part one, the three principal robotics language philosophies were illustrated. This was followed by a discussion of unconventional languages for robot control, namely PostScript and Java. In this installment, the author describes how he used(More)
This two-part paper describes the author's recent experiences with robot control systems. First, three principal programming techniques are reviewed, including dedicated robotics languages; machine tool languages; and general purpose computer programming languages. Then, unconventional languages for robot control, such as PostScript and Java, are discussed.(More)
  • P Frenger
  • 1997
Machine vision is an important component of medical systems engineering. Inexpensive miniature solid state cameras are now available. This paper describes how these devices can be used as artificial retinas, to take snapshots and moving pictures in monochrome or color. Used in pairs, they produce a stereoscopic field of vision and enable depth perception.(More)
  • P Frenger
  • 1995
This paper describes a functional model of the human hand suitable for design and testing of various motion control systems. A five digit arrangement (four fingers with opposable thumb) with anthropomorphic joints is used which provide a physiologic range of motion from the phalanges through the wrist. These joints can be operated by various actuators (ie:(More)
This month's Forth Column carries a different message than the usual " Forth programming is great " homily. The Forth language has a bit part later in this play, as a work in progress. But the bulk of this essay is devoted to issues related to the manned exploration of space, a favorite topic for us Boomers who watched Armstrong and Aldrin tread the Sea of(More)