Patents by Inventor David M. Demuro
David M. Demuro 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).
-
Patent number: 11539086Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: GrantFiled: November 16, 2020Date of Patent: December 27, 2022Assignee: APPLE INC.Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
-
Patent number: 11363133Abstract: A method of an electronic device that includes a power source is disclosed. The method determines a health of the power source, a temperature of the power source, and a state of charge of the power source. The method then sets a performance state cap for the electronic device based on at least the health of the power source.Type: GrantFiled: December 20, 2017Date of Patent: June 14, 2022Assignee: Apple Inc.Inventors: Cyril De La Cropte De Chanterac, David M. Demuro, John Ananny, Karen Eckert, Michael Eng, Nicholas W. Ruhter, Stephen D. Sterz
-
Publication number: 20210075068Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: ApplicationFiled: November 16, 2020Publication date: March 11, 2021Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
-
Patent number: 10847846Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: GrantFiled: January 25, 2018Date of Patent: November 24, 2020Assignee: APPLE INC.Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundarajan Manthiri, Vijayasekaran Boovaragavan
-
Patent number: 10599199Abstract: A method is disclosed. The method can include receiving a command to shut down an electronic device based on a measurement of power delivery to the electronic device. After receiving the command to shut down, the method can determine whether an indication of remaining power capacity at the electronic device exceeds a threshold value. The method can shut down the electronic device and, after shutting down the electronic device, in accordance with a determination that the indication of remaining power capacity exceeds the threshold value, automatically reboot the electronic device. In accordance with a determination that the indication of the remaining power capacity does not exceed the threshold value, automatically rebooting the electronic device can be foregone.Type: GrantFiled: December 20, 2017Date of Patent: March 24, 2020Assignee: Apple Inc.Inventors: Cyril De La Cropte De Chanterac, Michael Eng, Karen Eckert, Alessandro Pelosi, David M. Demuro, Stephen D. Sterz, Nicholas W. Ruhter
-
Patent number: 10211653Abstract: Battery packs that include multiple battery cells that may be monitored using a reduced amount of circuitry and battery systems that may account for battery cell changes over aging and temperature.Type: GrantFiled: July 15, 2017Date of Patent: February 19, 2019Assignee: Apple Inc.Inventors: Karthik Kadirvel, Ankur Gupta, Hua Chen, Christopher C. Branson, David M. DeMuro, Alessandro Pelosi
-
Publication number: 20180254641Abstract: Battery packs that include multiple battery cells that may be monitored using a reduced amount of circuitry and battery systems that may account for battery cell changes over aging and temperature.Type: ApplicationFiled: July 15, 2017Publication date: September 6, 2018Applicant: Apple Inc.Inventors: Karthik Kadirvel, Ankur Gupta, Hua Chen, Christopher C. Branson, David M. DeMuro, Alessandro Pelosi
-
Publication number: 20180159183Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: ApplicationFiled: January 25, 2018Publication date: June 7, 2018Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundarajan Manthiri, Vijayasekaran Boovaragavan
-
Patent number: 9917335Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: GrantFiled: August 28, 2015Date of Patent: March 13, 2018Assignee: APPLE INC.Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
-
Publication number: 20160064780Abstract: Methods and systems for detecting and compensating for expansion of rechargeable batteries over time. An expansion detector may be coupled to or positioned proximate a rechargeable battery to monitor for expansion thereof. After expansion exceeding a selected threshold is detected, the expansion detector may report the expansion to an associated processing unit. The processing unit may undertake to arrest further rechargeable battery expansion by modifying or changing one or more characteristics of charging and/or discharging circuitry coupled to the rechargeable battery. For example, the processing unit may charge the rechargeable battery at a lower rate or with reduced voltage after detecting expansion.Type: ApplicationFiled: August 28, 2015Publication date: March 3, 2016Inventors: Daniel W. Jarvis, David M. DeMuro, Hongli Dai, Julian Malinski, Julien Marcil, Meng Chi Lee, Richard Hung Minh Dinh, Rishabh Bhargava, Steven D. Sterz, Richard M. Mank, Soundararajan Manthiri, Vijayasekaran Boovaragavan
-
Patent number: 6771051Abstract: This invention includes a thermally stable, low-cost charging circuit for rechargeable batteries. The circuit includes a thermal control circuit that employs a temperature dependent component such as a thermistor or positive temperature coefficient device. The temperature dependent device is thermally coupled to a charging pass element, which is typically a power transistor. When the transistor enters a danger zone, which is a region of operation characterized by elevated power dissipation in the pass element, the thermal control circuit is actuated to regulate the pass element in a constant power mode until the circuit exits the danger zone.Type: GrantFiled: June 29, 2002Date of Patent: August 3, 2004Assignee: Motorola, Inc.Inventors: John W. Oglesbee, John E. Herrmann, Michael D. Geren, David M. Demuro, Roger L. Boyer
-
Publication number: 20040095097Abstract: This invention includes a thermally stable, low-cost charging circuit for rechargeable batteries. The circuit includes a thermal control circuit that employs a temperature dependent component such as a thermistor or positive temperature coefficient device. The temperature dependent device is thermally coupled to a charging pass element, which is typically a power transistor. When the transistor enters a danger zone, which is a region of operation characterized by elevated power dissipation in the pass element, the thermal control circuit is actuated to regulate the pass element in a constant power mode until the circuit exits the danger zone.Type: ApplicationFiled: June 29, 2002Publication date: May 20, 2004Inventors: John W. Oglesbee, John E. Herrmann, Michael D. Geren, David M. Demuro, Roger L. Boyer
-
Patent number: 6212415Abstract: The present invention provides a power adapter (10) adapted to couple an external antenna (17) to a communication device (30) by way of a cable (12) which is typically plugged into a cigarette lighter of a vehicle or some other power source at one end, and an input connector of the communication device (30) at the other. In particular, the present invention provides a simple one-piece vehicle power adapter which also provides RF input/output capability for connection to an external vehicle antenna. According to certain aspects of the invention, the adapter can be configured to have a variety of selection mechanisms. For example, the communication device could include an RF switch (34) and control circuitry for selecting either the internal or external antenna for optimum reception. Alternatively, the cable could include an external switch (70) for allowing the user to select the desired antenna.Type: GrantFiled: July 25, 2000Date of Patent: April 3, 2001Assignee: Motorola, Inc.Inventors: David M. Demuro, Mike M. Albert, John A. Kalenowsky, Robert Ford, Joseph Patino
-
Patent number: 6205344Abstract: The present invention provides a power adapter (10) adapted to couple an external antenna (17) to a communication device (30) by way of a cable (12) which is typically plugged into a cigarette lighter of a vehicle or some other power source at one end, and an input connector of the communication device (30) at the other. In particular, the present invention provides a simple one-piece vehicle power adapter which also provides RF input/output capability for connection to an external vehicle antenna. According to certain aspects of the invention, the adapter can be configured to have a variety of selection mechanisms. For example, the communication device could include an RF switch (34) and control circuitry for selecting either the internal or external antenna for optimum reception. Alternatively, the power adapter could include an external switch (70) for allowing the user to select the desired antenna.Type: GrantFiled: June 7, 1995Date of Patent: March 20, 2001Assignee: Motorola, Inc.Inventors: David M. Demuro, Mike M. Albert, John A. Kalenowsky, Robert Ford, Joseph Patino
-
Patent number: 6046575Abstract: A battery pack (102) comprises a lithium battery cell or cells (112), and is charged by a charger (104). In the event of a failure in the charger, an over-voltage protection circuit (120, 122) normally prevents charging of the battery cell above an over-voltage limit. In the event of a failure in both the charger and the over-voltage protection circuit, a critical voltage protection circuit (124, 126, 128) is provided to render the battery inoperative in a fail safe state. Specifically, a critical voltage control circuit (128) senses the battery voltage reaching the critical voltage level and responds by closing a current shunt switch (126), which draws current from the battery cell or cells through a fuse (124), causing the fuse to open, thus rendering the battery pack inoperative in a fail safe state.Type: GrantFiled: April 2, 1998Date of Patent: April 4, 2000Assignee: Motorola, Inc.Inventor: David M. Demuro
-
Patent number: 5939856Abstract: A battery and charging system including a charger (200) that provides a current and a battery (107) having at least one cell (108) that can be charged by the current provided by the charger (200). The battery (107) includes a memory (110) that stores battery information and a coding resistor (111) indicative of battery type. A battery switching circuit (113, 114) coupled to the memory (110) and the coding resistor (111) switches the memory (110) into contact with the charger (200) when the charger (200) is capable of reading the memory (110). Otherwise, the battery switching circuit (113, 114) switches the coding resistor (111) into contact with the charger (200).Type: GrantFiled: May 30, 1997Date of Patent: August 17, 1999Assignee: Motorola, Inc.Inventors: David M. Demuro, Joseph Patino, Jose' Maria Fernandez
-
Patent number: 5596567Abstract: A battery charger (12) and battery pack (14) are each provided with a wireless communications device, (24) and (28) respectively, to communicate over a wireless channel (32). The battery charger (12) receives charging information from a memory (30) housed in the battery pack (14), and commences a recharge process in accordance with the received information when the battery pack (14) is electrically coupled to the charger (12). The charger may update the information contained in the battery's memory (30) during the recharge process.Type: GrantFiled: March 31, 1995Date of Patent: January 21, 1997Assignee: Motorola, Inc.Inventors: David M. deMuro, Vernon Meadows
-
Patent number: 5506490Abstract: In summary, the present invention provides a method and apparatus for determining an external power supply type and modifying the charging of the internal battery (14) based upon the external power supply type and battery information. The device has an external power adapter (12) used to provide power to the device (10), as well as charging current for the battery which is regulated by the internal battery charger. A microcontroller (20) in the device (10) regulates the charging current to the battery (14). The microcontroller (20) preferably contains an A/D converter (21) which is connected to a pull-up resistor (32) internal to the device, and to a pull-down resistor (34) in the external power adapter (12). The voltage generated by the resistor divider network including the pull-up resistor (32) and the pull-down resistor (34) in the external power adapter is used to identify the external power adapter type.Type: GrantFiled: November 9, 1993Date of Patent: April 9, 1996Assignee: Motorola, Inc.Inventor: David M. DeMuro
-
Patent number: 5404582Abstract: An aural annunciator circuit for a radio receiver and a radio transceiver incorporating such. The annunciator circuit is operative to generate an aural signal when a signal is transmitted to the receiver in a manner analogous to telephonic ringer circuitry of conventional telephonic apparatus. The aural signal is of a signal level of a relatively high magnitude when the receiver in which the aural annunciator circuit is embodied is configured in a closed configuration and the aural signal is of a relatively low magnitude when the receiver is configured in an open configuration.Type: GrantFiled: November 27, 1992Date of Patent: April 4, 1995Assignee: Motorola, Inc.Inventors: David M. Demuro, Tony A. Trandai, William P. Alberth, Jr.
-
Patent number: 4823098Abstract: A ceramic filter includes a multiple zero bandstop filter function. The ceramic filter has a dielectric block with top and bottom surfaces and at least two holes, including a first hole and a second hole, extending from the top surface toward the bottom surface of the block. The block is selectively covered with a conductive material to provide a transmission line resonator for each of the two holes. The filter also includes an input electrode coupled to the dielectric means at a predetermined distance from the first hole, and an output electrode coupled to the dielectric means at a predetermined distance from the second hole. Finally, conductive plating, in the form of a transmission line, is contiguously disposed on the dielectric means adjacent the two holes and coupled thereto to provide a bandstop filter function with a zero represented at each hole.Type: GrantFiled: June 14, 1988Date of Patent: April 18, 1989Assignee: Motorola, Inc.Inventors: David M. DeMuro, Darioush Agahi-Kesheh