David Martin Arstein

6594150, Jul 15, 2003

Feb 2, 2001

09/776455

Richard Creason - Palo Alto CA
Clifford B. Willis - Tracy CA
Denise Silverman - San Carlos CA
Michael Sean White - San Jose CA
David M. Arstein - Scotts Valley CA
Timothy E. Mautz - San Francisco CA
Steve M. Wilson - San Jose CA
Raymond Kai Ho - San Jose CA
Kaamel Kermaani - Cupertino CA
Carl Meert - Sunnyvale CA
Vince Hileman - Sunnyvale CA

Sun Microsystems, Inc. - Santa Clara CA

H05K 114

361727, 361679, 345503, 439 61

A computer system comprising a chassis and housing removable servers supported in subchassis, each chassis having optional front or read cable access. Power and signal connectivity to the servers may be made from the front or rear of the system. The subchassis may be half the width of the chassis or a quarter of a width of the chassis. The subchassis further include an upper bay and a lower bay as well as a plurality of field replaceable units, which all may be access through the front of the chassis. One or more of the field replaceable units connect to the system through a midplane, located within the subchassis.

52086933, May 4, 1993

Mar 29, 1991

7/677707

David M. Arstein - Scotts Valley CA
William L. Geller - Foster City CA
Thomas E. Giles - Union City CA
Mark S. Thomas - Sunnyvale CA

Raynet Corporation - Menlo Park CA

H04J 1408

359137

A protocol for fiber-optic communication systems, or other communication systems based on transmission of unipolar pulses having wide dynamic range provides for information to be transmitted in packets having a predictable time slot for each transmitter. The receiver for such protocol has a first relatively long RC time constant mode conditioned for reception of data packets whose time of arrival is well predictable and a second relatively short RC time constant mode conditioned for reception of asynchronous randomly received packets. In the relatively long RC time constant mode, each packet includes a preamble having a first clamp interval in which no pulse is transmitted, and a second clamp interval in which a continual pulse is transmitted. A transducer on the receiver translates the packets of pulses into differential electronic signals on first and second outputs. First and second coupling capacitors, receive respective outputs of the transducer and AC couples the signals to respective second terminals of the capacitors.

58018670, Sep 1, 1998

Mar 20, 1996

8/619851

William L. Geller - Foster City CA
David M. Arstein - Scotts Valley CA
William F. Ellersick - Redwood City CA

H04B 1006

359189

A dc-coupled receiver for a shared optical system includes an input feedback amplifier circuit which establishes a dc reference baseline voltage level for incoming packets of data. A pair of sample-and-hold circuits are connected in parallel to receive and sample signals from the feedback amplifier circuit when no data is being transmitted and at the initial edge of incoming packets of data. A voltage divider circuit receiving signals from the sample-and-hold circuits establishes a dc slicing level for each incoming packet of data. An output feedback circuit can be added to compensate for offset error without affecting the performance of the sample-and-hold circuitry.

54124980, May 2, 1995

Mar 29, 1991

7/677044

David M. Arstein - Scotts Valley CA
William L. Geller - Foster City CA
Thomas E. Gles - Union CA
Mark S. Thomas - Sunnyvale CA

Raynet Corporation - Menlo Park CA

H04J 1408

359189

A protocol for fiber-optic communication systems, or other communication systems based on transmission of unipolar pulses having wide dynamic range provides for information to be transmitted in packets having a predictable time slot for each transmitter. The receiver for such protocol has a first relatively long RC time constant mode conditioned for reception of data packets whose time of arrival is well predictable and a second relatively short RC time constant mode conditioned for reception of asynchronous randomly received packets. In the relatively long RC time constant mode, each packet includes a preamble having a first clamp interval in which no pulse is transmitted, and a second clamp interval in which a continual pulse is transmitted. A transducer on the receiver translates the packets of pulses into differential electronic signals on first and second outputs. First and second coupling capacitors, receive respective outputs of the transducer and AC couples the signals to respective second terminals of the capacitors.