O2micro International Limited

O2 Micro, Incorporated

360 Degree Web, Inc.

02micro Inc.

Micro, LLC

Micro International Limited

2micro International Limited

Sterling D Du

James Lam

Bruce Denning

Reginia Chan

Aaron Reynoso

Sheau Chuen Her

Yung Lin Lin

Liusheng Liu

William Densham

You-Yuh Jack Shyr

Yishao Max Huang

Chih Jen Kuo

Miao Li

Xiaoguang Yu

Kwang H Liu

Haiquan Huang

Oleksandr Kokorin

Chuan Chiung Kuo

Volodymyr Ivchenko

Shih Ping Yeh

Eva Sheng

Vlad Popescu-Stanseti

In one embodiment, a driving circuit includes an AC/DC converter which converts an AC voltage to a DC voltage and a DC/DC linear regulator which regulates a current through, e.g., an LED light source, according to a first current reference if a monitoring signal indicating the DC voltage is within a predetermined range, and regulates the current according to a second current reference less than the first current reference if the monitoring signal is beyond the predetermined range. In another embodiment, a controller controlling power to an LED light source turns on a first plurality of LEDs and turns off a second plurality of LEDs if a monitoring signal indicative of a DC voltage received by the LED light source is within a predetermined range, and turns on both first and second plurality of LEDs if the monitoring signal is beyond the predetermined range.

Circuits and methods for driving light sources

A satellite navigation system receiver that includes a counter and a controlling unit is described. The counter may be driven by a reference clock signal having a reference clock frequency. The controlling unit can calculate a correction value indicative of a corrected reference clock frequency by comparing an increment of the counter values during a time period with an increment of the navigation system times during the time period. The controlling unit can generate a calculated navigation system time according to the correction value.

Calculating navigation system time in a satellite navigation system

A method and apparatus are provided to indicate battery capacity status. Different blinking frequencies of an LED correspond to different battery states of charge. Furthermore, the present invention provides a smooth visual brightness change of the LED by providing the appropriate LED current according to human eye characteristics.

Systems and methods for battery status indication

A computer system includes a system CPU responsive to a control signal to load a first operating system or a second operating system. The first operating system is run by the computer system in a first operation mode and the second operating system is run by the computer system in a second entertainment mode. A PC operating in an entertainment mode may operate a variety of entertainment software applications. A quick boot process is also provided. The quick boot process may include an accelerated BIOS boot process that defers and delays appropriate tasks. The quick boot process may also include: detecting a condition; performing a BIOS boot process; loading an image file associated with the condition; and executing the image file associated with the condition. The condition may be that associated hardware is unchanged from a previous boot. A parental control system is also disclosed.

Low power digital audio decoding/playing system for computing devices

The present invention is a computer system adapted to play audio files. The computer system includes a central processing unit, a storage unit, a first operating system, an interfacing unit, and a second operating system. The first operating system can control at least the CPU. The interface unit can interface with an external digital media device that may store a plurality of compressed audio files. The second operating system is capable of controlling the computer system operating in an audio playback mode. The power of the computer system is turned on and the computer system plays the plurality of compressed audio files in the audio playback mode when the external digital media device is in communication with the interface unit.

A method according to one embodiment includes coupling at least one power supply to a power bus comprised in a digital camera. The method of this embodiment may also include allocating power to at least one component of the digital camera by coupling at least one component to the power bus based on at least one power management priority rule. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Power management for digital devices

A low-power digital audio decoding and playing system and method for computing devices provides a low-cost, low power-consumption, long-battery-life audio playing and decoding system, which may be used to play compressed audio files of various formats. In one aspect, a computer system adapted to play audio files comprises a system CPU, memory, at least one drive comprising compressed audio data, and an audio controller coupled to the system CPU, memory and drive. The audio controller is adapted to cause the drive to read the compressed audio data from the drive, to cause the system CPU to decompress the compressed audio data from the drive into decompressed audio data, to cause the decompressed audio to be stored in the memory, and to cause the decompressed audio data to be retrieved from the memory for playing.

A low-power digital audio decoding and playing system and method for computing devices provides a low-cost, low power-consumption, long-battery-life audio playing and decoding system, which may be used to play compressed audio files of various formats. A software only solution for such a system is provided.

A low-power digital audio decoding and playing system and method for computing devices provides a low-cost, low power-consumption, long-battery-life audio playing and decoding system, which may be used to play compressed audio files of various formats. A software only solution for such a system is provided. Various applications including media select applications, voice recording applications, digital device applications, and remote control applications are also provided.

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 second operating system is run by the PC in a second PDA mode. Various software application programs that may be run in PDA mode include Internet auction applications, electronic mail access applications, and Internet radio applications.

Personal computer integrated with personal digital assistant

A smart card enabled mobile personal computing environment system stores a user's personalized, fully functional, computing environment in a smart card. A user information database is provided that is resident on a server and contains the user records of a plurality of users containing personal computing environment data with the amount of data in the user record generally larger than the storage capacity of a smart card. The user to specifies the information required to configure the client to the user's preferred personal computing environment. If the correct personal computing environment data is not resident in the smart card, the client queries the server for the information needed and updates the smart card with the new data. The user also manages his personal computing environment data stored on the smart card and the user information database. The server gives the client access to the user's records through a secure Web site. The user accesses his data, adds, modifies, and/or deletes information and transfers data to his smart card via the secure Web site. If the client has a slow or temporary connection with the server, the client is able to accommodate the user's data management needs by downloading the user's records stored on the server's user information database. The user can then manage his data without a connection to the server. Any changes to the user's records are later sent to the server to update the user information database.

Smart card enabled mobile personal computing environment system

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 second operating system is run by the PC in a second PDA mode. A method of operating a personal computer (PC) in either a PC mode or a PDA mode is also provided that includes: initiating a control signal; and loading a first or second operating system based on the control signal, wherein the first operating system operates the PC is the first PC mode and the second operating system operates the PC is the second PDA mode.

A controller includes a plurality of readers for reading an associated plurality of expansion cards and for controlling operation of such expansion cards, wherein at least one of the plurality of readers is a flash media reader. A method for controlling the operation of at least one expansion card with an integrated controller having a plurality of readers includes detecting the presence of at least one expansion card, and enabling a selected reader of the integrated controller associated with at least one expansion card. Another method of writing data to read only memory in an integrated controller includes unlocking the read only memory, writing information into the read only memory, and locking the read only memory to prevent otherwise unintentional or unauthorized writing to the read only memory is also provided.

Growing community of inventors

Palo Alto, CA, United States of America

Sterling D Du