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Steven P Buysse, Bret S Felton, David N Heard, David Keppel, Ronald J Podhajsky, Dale F Schmaltz, Robert H Wham, Edward C Meagher, Kate R Lawes, David A Schechter, Chelsea Shields, Philip M Tetzlaff: Method and system for controlling output of RF medical generator. Sherwood Services, November 21, 2006: US07137980 (480 worldwide citation)

A closed-loop control system has a user interface for allowing a user to select at least one pre-surgical parameter. The system also has a sensor module for continually sensing at least one of electrical and physical properties proximate a surgical site and generating at least one signal and a contr ...


2
David Keppel: Automatic activation of electrosurgical generator bipolar output. Sherwood Services, March 20, 2001: US06203541 (193 worldwide citation)

An automatic circuit that controls a surgical instrument having a pair of bipolar electrodes. The circuit comprises means for measuring the current between the pair of electrodes, an impedance detection circuit in electrical communication with the current measuring means, a comparator in electrical ...


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Steven P Buysse, Bret S Felton, David N Heard, David Keppel, Ronald J Podhajsky, Dale F Shmaltz, Robert H Wham, Edward C Meagher, Kate R Lawes, David A Schechter, Chelsea Shields, Philip M Tetzlaff, Jeremy S James: Method and system for controlling output of RF medical generator. Covidien, January 31, 2012: US08105323 (136 worldwide citation)

An electrosurgical generator is disclosed. The generator includes a microprocessor configured to generate a target impedance trajectory having at least one slope. The target impedance trajectory includes a plurality of target impedance values. The microprocessor is configured to drive tissue impedan ...


4
David Keppel, Steven H Johnson, Jim Mageehon: Current and status monitor. Sherwood Services, June 11, 2002: US06402741 (128 worldwide citation)

An apparatus and method are disclosed for providing visual and audible indications corresponding to the operational status of an electrosurgical generator so that the visual and audible indications can be readily observed and heard within an area normally associated with a working area of a typical ...


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Alex Klaiber, Robert Bedichek, David Keppel: Method and apparatus for correcting errors in computer systems. Transmeta Corporation, Stephen L King, May 18, 1999: US05905855 (72 worldwide citation)

A computer implemented process for detecting errors in computer systems including the steps of executing sequences of instructions of a software program on each of a reference system and a test system, detecting and recording state of the reference system and the test system at comparable points in ...


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John Banning, H Peter Anvin, Benjamin Gribstad, David Keppel, Alex Klaiber, Paul Serris: Fine grain translation discrimination. Transmeta Corporation, Stephen L King, March 26, 2002: US06363336 (45 worldwide citation)

A method for determining if writes to a memory page are directed to target instructions which have been translated to host instructions in a computer which translates instructions from a target instruction set to a host instruction set, including the steps of detecting a write to a memory page stori ...


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David Keppel, Robert Cmelik, Robert Bedichek: Method and apparatus for maintaining context while executing translated instructions. Transmeta Corporation, Stephen L King, July 2, 2002: US06415379 (45 worldwide citation)

A method of maintaining translation context for instructions translated from instructions designed for a target microprocessor to run on a host microprocessor including storing translation context related to each translated host instruction, indicating a translation context for host instructions pre ...


9
Brett Coon, David Keppel, Charles R Price: Programmable event counter system. Transmeta Corporation, Stephen L King, March 12, 2002: US06356615 (31 worldwide citation)

Certain events occurring throughout a microprocessor chip are monitored by a counter system (


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Patrick Boyle, David Keppel, Alex Klaiber, Edmund Kelly: Software direct memory access. Transmeta Corporation, December 23, 2003: US06668287 (21 worldwide citation)

Apparatus and a method for generating an interrupt when a direct memory access by an I/O device is desired, suspending the operation of the microprocessor in response to the interrupt, placing state of the morph host to a last known correct state in response to the interrupt, determining the memory ...