Patents by Inventor Han-Jung Kao
Han-Jung Kao 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: 9954432Abstract: A power supply apparatus with soft-start function is suitable to a load including a voltage stabilizing unit and a load unit coupled in parallel. The power supply apparatus includes a power unit, a soft-start adjusting unit, a current detecting unit and a controlling unit. The power unit generates a power voltage. The soft-start adjusting unit receives the power voltage, a first controlling signal and a second controlling signal, and transforms the power voltage to a soft-start current accordingly to output the soft-start current to the voltage stabilizing unit or output the power voltage to the voltage stabilizing unit. The current detecting unit measures a current of a loop formed between the power unit and the voltage stabilizing unit to generate a current detecting signal. The controlling unit receives the current detecting signal to generate the first controlling signal and second controlling signal.Type: GrantFiled: July 2, 2017Date of Patent: April 24, 2018Assignees: HAN-WIN TECHNOLOGY CO. LTD.Inventor: Han-Jung Kao
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Publication number: 20180006550Abstract: A power supply apparatus with soft-start function is suitable to a load including a voltage stabilizing unit and a load unit coupled in parallel. The power supply apparatus includes a power unit, a soft-start adjusting unit, a current detecting unit and a controlling unit. The power unit generates a power voltage. The soft-start adjusting unit receives the power voltage, a first controlling signal and a second controlling signal, and transforms the power voltage to a soft-start current accordingly to output the soft-start current to the voltage stabilizing unit or output the power voltage to the voltage stabilizing unit. The current detecting unit measures a current of a loop formed between the power unit and the voltage stabilizing unit to generate a current detecting signal. The controlling unit receives the current detecting signal to generate the first controlling signal and second controlling signal.Type: ApplicationFiled: July 2, 2017Publication date: January 4, 2018Inventor: Han-Jung KAO
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Patent number: 8417472Abstract: A battery management system with synchronized data sampling for a battery pack including multiple battery cells is disclosed. The battery management system includes a plurality of local monitors coupled to a plurality of battery cells and operable for sampling status information for the battery cells. The battery management system further includes a central controller coupled to the local monitors and operable for broadcasting a sample command to the local monitor synchronously, wherein the local monitors start to sample the status information for the battery cells in response to the sample command.Type: GrantFiled: December 14, 2009Date of Patent: April 9, 2013Assignee: 02Micro Inc.Inventors: Han-Jung Kao, Xiaohua Hou, Xiaofeng Wang
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Publication number: 20120280572Abstract: A battery system includes battery cells and a control circuit having a control pin. The control circuit determines a condition of the battery cells according to cell parameters of the battery cells. The control circuit compares a voltage at the control pin with a first voltage threshold to select an operation mode from a first mode and a second mode. In the first mode, the control circuit compares the voltage at the control pin with a second voltage threshold and generates a control signal based on a result of the comparison, such that the control signal is generated if the battery cells remain in the condition for a time period that reaches a first time threshold. In the second mode, the control circuit generates the control signal if the battery cells remain in the condition for a time period that reaches a second time threshold.Type: ApplicationFiled: April 12, 2012Publication date: November 8, 2012Applicant: O2Micro, Inc.Inventors: Guoxing Li, Han-Jung Kao
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Patent number: 8242745Abstract: A battery management system for a battery pack comprising multiple battery modules is disclosed. Each of the battery modules includes multiple battery cells. The battery management system includes multiple first balancing units, multiple first controllers, a second balancing unit including multiple second balancing circuits, and a second controller coupled to the battery modules and the second balancing circuits. The first controllers are operable for controlling the first balancing units to adjust voltages of battery cells in the battery module if an unbalance occurs between the battery cells. The second controller is operable for controlling said second balancing circuits to adjust voltages of said battery modules if an unbalance occurs between battery modules.Type: GrantFiled: December 22, 2010Date of Patent: August 14, 2012Assignee: O2Micro Inc.Inventors: Wei Zhang, Han-Jung Kao
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Patent number: 8242742Abstract: A charger includes a detection pin, a voltage divider, and a comparator. The detection pin can couple the charger to a power source via a first data line. The voltage divider and the comparator are coupled to the detection pin. The voltage divider divides a power voltage provided by the power source and provides a detection voltage at the detection pin. The comparator compares the detection voltage with a predetermined reference voltage and identifies a type of the power source according to the comparing.Type: GrantFiled: May 30, 2008Date of Patent: August 14, 2012Assignee: O2Micro, IncInventors: Han-Jung Kao, Guoxing Li, Ya-Tung Kao, Wei Zhang
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Patent number: 8198862Abstract: A battery management system for a battery pack comprising multiple battery modules is disclosed. Each of the battery modules includes multiple battery cells. The battery management system includes multiple first balancing units, multiple first controllers, a second balancing unit including multiple second balancing circuits, and a second controller coupled to the battery modules and the second balancing circuits. The first controllers are operable for controlling the first balancing units to adjust voltages of battery cells in the battery module if an unbalance occurs between the battery cells. The second controller is operable for controlling said second balancing circuits to adjust voltages of said battery modules if an unbalance occurs between battery modules.Type: GrantFiled: August 4, 2010Date of Patent: June 12, 2012Assignee: O2Micro Inc.Inventors: Wei Zhang, Han-Jung Kao
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Patent number: 7973515Abstract: A power management system includes a battery pack having a battery controller and includes an adapter operable for charging the battery pack and powering a system load. The adapter generates a power recognition signal indicative of a maximum adapter power and receives a control signal. The battery controller in the battery pack receives the power recognition signal and generates the control signal to adjust an output power of the adapter according to a status of the battery pack and a status of the system load.Type: GrantFiled: June 12, 2008Date of Patent: July 5, 2011Assignee: O2Micro, IncInventors: William Densham, Han-Jung Kao, Liusheng Liu
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Publication number: 20110140650Abstract: A battery management system for a battery pack comprising multiple battery modules is disclosed. Each of the battery modules includes multiple battery cells. The battery management system includes multiple first balancing units, multiple first controllers, a second balancing unit including multiple second balancing circuits, and a second controller coupled to the battery modules and the second balancing circuits. The first controllers are operable for controlling the first balancing units to adjust voltages of battery cells in the battery module if an unbalance occurs between the battery cells. The second controller is operable for controlling said second balancing circuits to adjust voltages of said battery modules if an unbalance occurs between battery modules.Type: ApplicationFiled: August 4, 2010Publication date: June 16, 2011Inventors: Wei ZHANG, Han-Jung KAO
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Publication number: 20110089897Abstract: A battery management system for a battery pack comprising multiple battery modules is disclosed. Each of the battery modules includes multiple battery cells. The battery management system includes multiple first balancing units, multiple first controllers, a second balancing unit including multiple second balancing circuits, and a second controller coupled to the battery modules and the second balancing circuits. The first controllers are operable for controlling the first balancing units to adjust voltages of battery cells in the battery module if an unbalance occurs between the battery cells. The second controller is operable for controlling said second balancing circuits to adjust voltages of said battery modules if an unbalance occurs between battery modules.Type: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Inventors: Wei ZHANG, Han-Jung KAO
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Publication number: 20100161260Abstract: A battery management system with synchronized data sampling for a battery pack including multiple battery cells is disclosed. The battery management system includes a plurality of local monitors coupled to a plurality of battery cells and operable for sampling status information for the battery cells. The battery management system further includes a central controller coupled to the local monitors and operable for broadcasting a sample command to the local monitor synchronously, wherein the local monitors start to sample the status information for the battery cells in response to the sample command.Type: ApplicationFiled: December 14, 2009Publication date: June 24, 2010Inventors: Han-Jung KAO, Xiaohua HOU, Xiaofeng WANG
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Publication number: 20090001937Abstract: A power management system includes a battery pack having a battery controller and includes an adapter operable for charging the battery pack and powering a system load. The adapter generates a power recognition signal indicative of a maximum adapter power and receives a control signal. The battery controller in the battery pack receives the power recognition signal and generates the control signal to adjust an output power of the adapter according to a status of the battery pack and a status of the system load.Type: ApplicationFiled: June 12, 2008Publication date: January 1, 2009Applicant: O2Micro, Inc.Inventors: William Densham, Han-Jung Kao, Liusheng Liu
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Publication number: 20080303486Abstract: A charger includes a detection pin, a voltage divider, and a comparator. The detection pin can couple the charger to a power source via a first data line. The voltage divider and the comparator are coupled to the detection pin. The voltage divider divides a power voltage provided by the power source and provides a detection voltage at the detection pin. The comparator compares the detection voltage with a predetermined reference voltage and identifies a type of the power source according to the comparing.Type: ApplicationFiled: May 30, 2008Publication date: December 11, 2008Inventors: Han-Jung Kao, Guoxing Li, Ya-Tung Kao, Wei Zhang
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Publication number: 20080218127Abstract: A battery management system comprises a control circuit and an adapter. The control circuit can be used to generate a control signal according to a status of each cell of a plurality of cells in a battery pack. The adapter receives the control signal and charges the battery pack. An output power of the adapter is adjusted according to the control signal.Type: ApplicationFiled: June 20, 2007Publication date: September 11, 2008Inventors: Han-Jung Kao, Jiankui Guo, Liusheng Liu, Ruichao Tang, Guoxing Li, Xiaohua Hou, Zhengming Zhang
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Patent number: 7331001Abstract: The present invention provides a test card for multiple functions testing. The test card includes a host of media devices, all of which reside on a single printed circuit board; and a selection device which selects each one of the host of media devices for testing. The test card can test all SD, MMC, MS (Pro), SMC devices and functions in one time in a bench without inserting and removing the media devices, thus accelerates the production line test speed.Type: GrantFiled: April 6, 2004Date of Patent: February 12, 2008Assignee: O2Micro International LimitedInventors: Han-Jung Kao, Shih-Chun Chen, Chun-Hsi Lin, Chih-Lang Lin, ShyhShin Lee
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Publication number: 20040268194Abstract: The present invention provides a test card for multiple functions testing. The test card includes a host of media devices, all of which reside on a single printed circuit board; and a selection device which selects each one of the host of media devices for testing. The test card can test all SD, MMC, MS (Pro), SMC devices and functions in one time in a bench without inserting and removing the media devices, thus accelerates the production line test speed.Type: ApplicationFiled: April 6, 2004Publication date: December 30, 2004Inventors: Han-Jung Kao, Shih-Chun Chen, Chun-Hsi Lin, Chih-Lang Lin, ShyhShin Lee