Patents by Inventor Ellen Cox
Ellen Cox has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11804828Abstract: Aspects of the invention include receiving, by a controller, an indication of a chip initialization for a duty cycle correction (DCC) circuit, wherein the duty cycle correction circuit includes a main path including a main multiplexer (MUX) having a first input and a main driver circuit, a replica path including a replica MUX having a second input and a replica driver circuit, a selection MUX connected to the main path and the replica path, operating the selection MUX, during a period for the chip initialization, to select the main path as an input to the selection MUX, inputting a pre-defined data pattern to the main path, comparing an output of the selection MUX with the pre-defined data pattern to determine duty cycle issue, and generating an adjustment vector based on the determined duty cycle issue.Type: GrantFiled: February 22, 2022Date of Patent: October 31, 2023Assignee: International Business Machines CorporationInventors: Jieming Qi, Daniel Mark Dreps, Glen A. Wiedemeier, Eric John Lukes, Carrie Ellen Cox, Timothy O. Dickson
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Publication number: 20230268908Abstract: Aspects of the invention include receiving, by a controller, an indication of a chip initialization for a duty cycle correction (DCC) circuit, wherein the duty cycle correction circuit includes a main path including a main multiplexer (MUX) having a first input and a main driver circuit, a replica path including a replica MUX having a second input and a replica driver circuit, a selection MUX connected to the main path and the replica path, operating the selection MUX, during a period for the chip initialization, to select the main path as an input to the selection MUX, inputting a pre-defined data pattern to the main path, comparing an output of the selection MUX with the pre-defined data pattern to determine duty cycle issue, and generating an adjustment vector based on the determined duty cycle issue.Type: ApplicationFiled: February 22, 2022Publication date: August 24, 2023Inventors: Jieming Qi, Daniel Mark Dreps, Glen A. Wiedemeier, Eric John Lukes, Carrie Ellen Cox, Timothy O. Dickson
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Patent number: 10998720Abstract: An Electro-Static Discharge (ESD) protection circuit is disclosed. In some implementations, the ESD protection circuit includes a first ESD diode, a second ESD diode, a passive equalization network and a programmable resistor network. The first ESD diode is coupled to the passive equalization network. The programmable resistor network is coupled between the passive equalization network and the second ESD diode. The programmable resistor network can be programmed to place the ESD protection circuit in one of a plurality of receiver modes based on a type of a transmitter from which the receiver is receiving signals.Type: GrantFiled: October 19, 2017Date of Patent: May 4, 2021Assignee: QUALCOMM INCORPORATEDInventors: Xiaobin Yuan, Carrie Ellen Cox, Joseph Natonio, Siqi Fan
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Publication number: 20190280849Abstract: Clock data recovery broadcast for multi-lane SerDes is disclosed. In some implementations, a serial input/output (I/O) interface includes a master lane and a plurality of slave lanes to receive serial incoming data. The master lane has a master clock and data recovery (CDR) module to generate master data sample clock control signals. The master data sample clock control signals can be broadcasted to the slave lanes. Furthermore, each of the plurality of slave lanes having a slave CDR module. The slave CDR module can include a clock edge tracking module to generate local data sample clock control signals, and a multiplexer to select the master data sample clock control signals or local data sample clock control signals to apply in the respective slave lane in response to a signal from a CDR controller indicative of a low power mode.Type: ApplicationFiled: March 12, 2018Publication date: September 12, 2019Inventors: Brian Joel SCHUH, Michael TROMBLEY, Carrie Ellen COX, Robert Michael BUNCE
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Patent number: 10411873Abstract: Clock data recovery broadcast for multi-lane SerDes is disclosed. In some implementations, a serial input/output (I/O) interface includes a master lane and a plurality of slave lanes to receive serial incoming data. The master lane has a master clock and data recovery (CDR) module to generate master data sample clock control signals. The master data sample clock control signals can be broadcasted to the slave lanes. Furthermore, each of the plurality of slave lanes having a slave CDR module. The slave CDR module can include a clock edge tracking module to generate local data sample clock control signals, and a multiplexer to select the master data sample clock control signals or local data sample clock control signals to apply in the respective slave lane in response to a signal from a CDR controller indicative of a low power mode.Type: GrantFiled: March 12, 2018Date of Patent: September 10, 2019Assignee: QUALCOMM IncorporatedInventors: Brian Joel Schuh, Michael Trombley, Carrie Ellen Cox, Robert Michael Bunce
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Publication number: 20190123551Abstract: An Electro-Static Discharge (ESD) protection circuit is disclosed. In some implementations, the ESD protection circuit includes a first ESD diode, a second ESD diode, a passive equalization network and a programmable resistor network. The first ESD diode is coupled to the passive equalization network. The programmable resistor network is coupled between the passive equalization network and the second ESD diode. The programmable resistor network can be programmed to place the ESD protection circuit in one of a plurality of receiver modes based on a type of a transmitter from which the receiver is receiving signals.Type: ApplicationFiled: October 19, 2017Publication date: April 25, 2019Inventors: Xiaobin YUAN, Carrie Ellen COX, Joseph NATONIO, Siqi FAN
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Patent number: 10218391Abstract: Systems and methods to provide a low-power mode for serial links are disclosed. One embodiment of such a system includes a transmitter coupled to a link; a receiver coupled to the link and configured to receive signals over the link from the transmitter; a transmit control module configured to cause the transmitter to enter and exit a low-power mode; and a clock module coupled to the transmitter and configured to provide a clock signal to the transmitter, wherein the clock module is further configured to provide the clock signal as a divided clock signal to the transmitter when the transmitter is in the low-power mode, further wherein the divided clock signal has a same phase as the clock signal before entry into the low-power mode.Type: GrantFiled: August 2, 2017Date of Patent: February 26, 2019Assignee: QUALCOMM IncorporatedInventors: Robert Michael Bunce, Carrie Ellen Cox, Victor Git-Han Moy
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Publication number: 20190044553Abstract: Systems and methods to provide a low-power mode for serial links are disclosed. One embodiment of such a system includes a transmitter coupled to a link; a receiver coupled to the link and configured to receive signals over the link from the transmitter; a transmit control module configured to cause the transmitter to enter and exit a low-power mode; and a clock module coupled to the transmitter and configured to provide a clock signal to the transmitter, wherein the clock module is further configured to provide the clock signal as a divided clock signal to the transmitter when the transmitter is in the low-power mode, further wherein the divided clock signal has a same phase as the clock signal before entry into the low-power mode.Type: ApplicationFiled: August 2, 2017Publication date: February 7, 2019Inventors: Robert Michael BUNCE, Carrie Ellen COX, Victor Git-Han MOY
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Patent number: 9234999Abstract: A method for determining the physical location of a fiber optic channel in a fiber optic cable comprises the steps of a) providing at least one location key having a known physical location, b) establishing the location of the location key with respect to the fiber optic channel, and c) using the location information established in step b) to determine the physical location of the channel. The location key may comprises an acoustic source, a section of fiber optic cable that is acoustically masked, or at least one magnetic field source and step b) comprises using a Lorentz force to establish the location of the magnetic field source with respect to the fiber optic channel.Type: GrantFiled: December 9, 2011Date of Patent: January 12, 2016Assignee: Shell Oil CompanyInventors: Johannes Maria Vianney Antonius Koelman, Peter Berkeley Wills, Menno Mathieu Molenaar, Barbara Ellen Cox, Daniel Joinson
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Publication number: 20130294720Abstract: A method for determining the physical location of a fiber optic channel in a fiber optic cable comprises the steps of a) providing at least one location key having a known physical location, b) establishing the location of the location key with respect to the fiber optic channel, and c) using the location information established in step b) to determine the physical location of the channel. The location key may comprises an acoustic source, a section of fiber optic cable that is acoustically masked, or at least one magnetic field source and step b) comprises using a Lorentz force to establish the location of the magnetic field source with respect to the fiber optic channel.Type: ApplicationFiled: December 9, 2011Publication date: November 7, 2013Applicant: SHELL OIL COMPANYInventors: Johannes Maria Vianney Antonius Koelman, Peter Berkeley Wills, Menno Mathieu Molenaar, Barbara Ellen Cox, Daniel Joinson
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Patent number: 8359231Abstract: A system and method for allowing multiple customers to each create an individual, modified motivation or recognition program having participants, each said motivation program permitting the participants to earn awards on the basis of the participants' performance, each said motivation program of a particular customer operating according to preferences selected by the particular customer.Type: GrantFiled: April 23, 2001Date of Patent: January 22, 2013Assignee: Maritz Holdings Inc.Inventors: Brian Fitzpatrick, Ellen Cox, Maddy Sheprow, Peggy Barton, Frank Munsch, Mark Hanes, Jennie Hei
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Publication number: 20090091375Abstract: A system is disclosed. The system includes a first circuit, the first circuit includes a bias device for allowing the first circuit to transition between a first mode and a second mode. The system further includes a second circuit which controls the bias device. The second circuit provides a bias voltage at a sub-threshold voltage level to the bias device when the first device is in one of the first and the second mode. The second circuit provides a bias voltage at a threshold voltage level or higher when the first device is in one of the first and the second mode. Accordingly, the transition time between modes of the first circuit is minimized.Type: ApplicationFiled: October 3, 2007Publication date: April 9, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Carrie Ellen COX, Hayden Clavie CRANFORD, JR., Todd Morgan RASMUS, Steven Mark CLEMENTS
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Publication number: 20020046138Abstract: A system and method for allowing multiple customers to each create an individual, modified motivation or recognition program having participants, each said motivation program permitting the participants to earn awards on the basis of the participants' performance, each said motivation program of a particular customer operating according to preferences selected by the particular customer.Type: ApplicationFiled: April 23, 2001Publication date: April 18, 2002Inventors: Brian Fitzpatrick, Ellen Cox, Maddy Sheprow, Peggy Barton, Frank Munsch, Mark Hanes, Jennie Hei, Ethan Blumenstrauch