1
Yung Lin Lin: High-efficiency adaptive DC/AC converter. O2 Micro International, Hayes Soloway Hennessey Grossman & Hage P C, July 10, 2001: US06259615 (146 worldwide citation)

A CCFL power converter circuit is provided using a high-efficiency zero-voltage-switching technique that eliminates switching losses associated with the power MOSFETs. An optimal sweeping-frequency technique is used in the CCFL ignition by accounting for the parasitic capacitance in the resonant tan ...


2
Sterling Du, Reginia Chan: Audio controller for portable electronic devices. O2 Micro International, Grossman Tucker Perreault & Pfleger PLLC, January 6, 2004: US06675233 (144 worldwide citation)

An audio controller for use with laptop and notebook digital computers for reproducing compressed digital audio recordings. The controller includes a drive interface for traversing and accessing audio data files stored on a drive of a computer system. Function keys coupled to the controller permit u ...


3
Serban Mihai Popescu: Power management circuit for battery systems. O2 Micro International, Hayes Soloway Hennessey Grossman & Hage P C, December 11, 2001: US06329796 (76 worldwide citation)

A power management circuit for battery systems composed of a switch defining a single charge/discharge path. The switch is selectively controlled using analog signals to couple a battery to a power source for charging, or to couple the battery to an active load. For charging, the switch is controlle ...


4
Reginia Chan, Sterling Du, James Lam, Aaron Reynoso: Low power CD-ROM player for portable computer. O2 Micro International, Hayes Soloway Hennessey Grossman & Hage P C, May 1, 2001: US06226237 (54 worldwide citation)

A computer subsystem of a computer includes a CPU, RAM, display, storage device, input device(s), and a digital-audio generating IC. A CD-ROM subsystem of the computer includes a CD-ROM drive and CD-ROM control buttons for controlling CD-ROM drive's operation while playing audio CDs. An audio-i ...


5
Chan Regina, Du Sterling, Lam James, Reynoso Aaron: Low power cd-rom player for portable computers. O2 Micro International, September 29, 1999: EP0945778-A2 (37 worldwide citation)

A computer subsystem of a computer includes a CPU (120), RAM, display (110), storage device (114), input device(s), and a digital-audio generating IC (130). A CD-ROM subsystem of the computer includes a CD-ROM drive (138) and CD-ROM control buttons (142) for controlling CD-ROM drive's operation whil ...


6
Constantin Bucur: Voltage mode, high accuracy battery charger. O2 Micro International, Grossman Tucker Perreault & Pfleger PLLC, December 24, 2002: US06498461 (30 worldwide citation)

A voltage mode battery charging system is provided that includes a battery current control section, a battery voltage control section, and a power control section. The battery current control section and battery voltage control section each generate signals indicative of the battery charging current ...


7
Sterling Du, Bruce Denning, James Lam: Personal computer integrated with personal digital assistant. O2 Micro International, September 9, 2008: US07424623 (23 worldwide citation)

A personal computer (PC) adapted to function as a personal digital assistant (PDA) includes: a central processing unit (CPU) responsive to a control signal to load a first operating system or a second operating system, wherein the first operating system is run by the PC in a first PC mode and the se ...


8
Serban Mihai Popescu: Battery cell charging system having voltage threshold and bleeder current generating circuits. O2 Micro International, Hayes Soloway Hennessey Grossman & Hage P C, September 4, 2001: US06285161 (23 worldwide citation)

A balanced battery cell charging circuit is provided. The circuit includes a comparator for comparing the voltage of a battery cell to a predetermined threshold voltage. If the cell voltage exceeds the threshold value, a bleeder current is generated. In one preferred embodiment, the bleeder current ...


9
Wei Wang, Guoxing Li, Sean Xiao: System and method for balancing cells in a battery pack with selective bypass paths. O2 Micro International, December 16, 2008: US07466104 (23 worldwide citation)

A system and method for cell balancing with smart low-voltage control circuit. The cell balancing system comprises a plurality of battery cells, an external bypass path for each cell, an internal bypass path for each cell, an input terminal receiving an enable signal for each cell, an input terminal ...


10
Vlad Popescu Stanesti: Buffer battery power supply system. O2 Micro International, Hayes Soloway Hennessey Grossman & Hage PC, June 12, 2001: US06246215 (17 worldwide citation)

A buffer battery power supply circuit is provided. In one embodiment, a battery charger circuit supplies a total output current which is delivered to both an active system and a battery. The total output current and the current delivered to a battery are sensed and compared to a preset threshold tot ...