Jerry K Radcliffe

US Patent:

7032121, Apr 18, 2006

Filed:

Jan 9, 2003

Appl. No.:

10/339280

Inventors:

Jerry Kyle Radcliffe - Raleigh NC, US

Assignee:

Hatteras Networks - Durham NC

International Classification:

G06G 6/04
G06G 7/60

US Classification:

713501, 708174, 708490

Abstract:

A signal is generated by providing a clock signal having a frequency (f). The clock frequency fis arithmetically divided by an output frequency (f) associated with the signal to obtain a ratio R and a remainder given by x/y. The signal is derived from the clock signal by successively dividing the frequency (f) of the clock signal by one of R and R+1, such that a fraction of times that the frequency (f) of the clock signal is divided by R is given by 1-x/y and a fraction of times that the frequency (f) of the clock signal is divided by R+1 is given by x/y. In particular, the signal is derived by driving a counter using the clock signal to a count value of one of R and R+1, such that a fraction of times that the counter is driven to a count value of R is given by 1-x/y and a fraction of times that the counter is driven to a count value of R+1 is given by x/y.

US Patent:

51215004, Jun 9, 1992

Filed:

May 13, 1991

Appl. No.:

7/701308

Inventors:

David L. Arlington - Eggertsville NY
Jacqueline K. Morris - Binghamton NY
Hehching H. Li - Endicott NY
Jerry K. Radcliffe - Owego NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 126
G06F 1300

US Classification:

395750

Abstract:

An apparatus and method for polling a plurality of components in a data processing system includes a sensor for determining when a request for power up has been made, a series of parallel circuits extending between a power sequence monitor/power control device and individual computer system components, a configuration bus connected between the system components and the power sequence monitor/power control device and comparison circuitry connected to the configuration bus for comparing a signal sent from the power sequence monitor/power control device, through the configuration bus and system components, and returned to the power sequence monitor/power control device, with a predetermined code for identifying and locating the system components.

US Patent:

46427430, Feb 10, 1987

Filed:

Aug 5, 1985

Appl. No.:

6/762648

Inventors:

Jerry K. Radcliffe - Owego NY

Assignee:

International Business Machines Corp. - Armonk NY

International Classification:

H02M 3335

US Classification:

363 21

Abstract:

A power supply including a saturable reactor voltage regulator using a core formed of relatively inexpensive magnetically soft material with a B-H loop which is poor in squareness. The reset point of the saturable reactor core is established by a clamping circuit, including a transistor switch and diode in series, which effectively clamps a short circuit across the reactor winding when the core reaches a desired reset point on its B-H loop. The proper time of actuation of the clamping circuit is selected by a control circuit which includes a comparator for generating a control signal for actuating the switch whenever an error voltage derived from the output voltage exceeds the voltage level of a triangular wave developed by integrating a replica of the input pulsations to the magnetic amplifier structure. The saturable reactor is driven to saturation at a time during positive pulsations related to the position of the reset point. In one embodiment, the clamping circuit is connected directly across the reactor winding, while in a second embodiment, the clamping circuit is connected across a secondary reactor winding.