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Fong, Cupertino
Chee K. Fong, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090116188 | LIQUID RESISTANT A/C ADAPTOR - An external AC power adapter. The adapter includes a housing which, in one embodiment, defines an air inlet compartment, an air outlet compartment and a partially sealed electronics compartment containing electrical components for converting an AC input to a DC output. A blower generates an airflow within the electronics compartment for cooling the electrical components in the electronics compartment. Barriers are located in the air inlet compartment and the air outlet compartment to prevent liquid from entering the electronics compartment. | 05-07-2009 |
Chee Kiong Fong, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100110631 | SPLASH RESISTANT POWER ADAPTER - An external AC power adapter defines a power conversion chamber that retains power conversion circuitry operable to convert an input power to an output power. The power adapter further include an intake chamber and an outlet chamber, both having an aperture that places the respective chamber in fluid communication with the power conversion chamber. Each chamber may have at least one vent to the ambient environment such that an air mover is operable to circulate ambient air through the power conversion chamber. Each chamber may include a guard that deters liquid that has entered the respective chamber from flowing into the associated aperture. | 05-06-2010 |
| 20100311280 | DUAL-BARREL, CONNECTOR JACK AND PLUG ASSEMBLIES - Disclosed herein are dual-barrel, connector jack and plug assemblies. Particularly, plug assemblies having two single barrel connectors that are situated side-by-side. Each barrel may include two or more contacts for receiving and transmitting DC IN+ electrical signals. Further, each barrel may include two or more contacts for receiving and transmitting DC IN− electrical signals. Inside each barrel connector may be disposed center pins. The barrel connectors may be cylindrically-shaped and configured to mate to a dual-barrel, connector jack assembly as described herein. A bridge component may be disposed between the barrel connectors for preventing the plug assembly from being inserted into the jack assembly in the wrong orientation. The bridge assembly may be shaped to prevent improper insertion into a corresponding aperture of the jack assembly. | 12-09-2010 |
David Fong, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100091545 | ELECTICALLY PROGRAMMABLE FUSE BIT - One-time programmable (OTP) nonvolatile fuse memory cells are disclosed that do not require decoding or addressing for reading their data content. Each fuse memory cell has its content latched at its output and available at all times and can be used, for example, for code storage memories, serial configuration memories, and as individual fuse bits for ID (identification), trimming, and other post-fabrication System-on-Chip (SoC) customization needs. Means are also provided for temporary data storage for design testing, etc. In alternative embodiments, using two differentially programmed fuses in a single memory cell, the selection and programming circuitry are merged. | 04-15-2010 |
Victor Fong, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090243054 | I/O CONNECTION SCHEME FOR QFN LEADFRAME AND PACKAGE STRUCTURES - Methods, systems, and apparatuses for integrated circuit packages and lead frames are provided. A quad flat no-lead (QFN) package includes a plurality of peripherally positioned pins, a die-attach paddle, an integrated circuit die, and an encapsulating material. The die-attach paddle is positioned within a periphery formed by the pins. The die is attached to the die-attach paddle. The encapsulating material encapsulates the die on the die-attach paddle, encapsulates bond wires connected between the die and the pins, and fills a space between the pins and the die-attach paddle. One or more of the pins are extended. An extended pin may be elongated, L shaped, T shaped, or “wishbone” shaped. The extended pin(s) enable wire bonding of additional ground, power, and I/O (input/output) pads of the die in a manner that does not significantly increase QFN package cost. | 10-01-2009 |
Vincent Fong, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100232628 | Circuits and Methods for Reducing Pop Noise in Class D Amplifiers - In one embodiment the present invention includes a method for starting up a class D amplifier. The method comprises increasing, gating, and driving. The increasing includes increasing a duty cycle of a pulse train from a first duty cycle to a second duty cycle. The gating includes gating a signal based on the increasing of the duty cycle. The gating results in a gated signal. The driving includes driving an output signal from the gated signal to charge an output capacitor. The output capacitor is coupled to a speaker. The increasing of the duty cycle contributes to the charging of the output capacitor such that switching sounds detectable by the human ear are reduced. | 09-16-2010 |
Vincent L. Fong, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090190377 | Systems and Methods for DC to DC Conversion with Current Mode Control - In one embodiment the present invention includes a DC to DC converter device which includes an electronic circuit. The electronic circuit comprises a first comparator, a second comparator, a first switch, a first latch, and a current sensor. The inductor current includes a peak current value and a valley current value. The first comparator detects the peak current value and resets the first latch which opens the first switch. The second comparator detects the valley current value and sets the first latch which closes the first switch. The current sensor is coupled to sense an inductor current flowing through an output load, and is coupled to provide a sense voltage to the first and second comparators. In this manner, the electronic circuit provides DC to DC conversion with current control. | 07-30-2009 |
| 20090195190 | Systems and Methods for Powering a Light Emitting Diode Lamp - In one embodiment, the present invention includes an electronic circuit for providing a power current to an LED lamp. The electronic circuit comprises a logic drive circuit, a VCO, a power switch, and a first current sensor. The VCO is coupled to provide a first logic control signal to the logic drive circuit. The power switch has a first terminal and second terminal coupled to deliver the power current to the LED lamp and a control terminal coupled to receive a power control signal from the logic drive circuit. The first current sensor is coupled to sense a peak current passing through the power switch and coupled to provide a second logic control signal to the logic drive circuit. | 08-06-2009 |
| 20110080150 | Systems and Methods for DC to DC Conversion with Current Mode Control - In one embodiment the present invention includes a DC to DC converter device which includes an electronic circuit. The electronic circuit comprises a first comparator, a second comparator, a first switch, a first latch, and a current sensor. The inductor current includes a peak current value and a valley current value. The first comparator detects the peak current value and resets the first latch which opens the first switch. The second comparator detects the valley current value and sets the first latch which closes the first switch. The current sensor is coupled to sense an inductor current flowing through an output load, and is coupled to provide a sense voltage to the first and second comparators. In this manner, the electronic circuit provides DC to DC conversion with current control. | 04-07-2011 |
Vincent Lok-Cheung Fong, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080209250 | Single wire communication circuits and methods - Embodiments of the present invention include systems and methods of control using a single wire. The systems and methods presented allow sending or receiving commands and data through a single wire. In one embodiment, commands and data are received by the control system through a single terminal. In another embodiment, commands and data are received and transmitted from the control system through a single terminal. | 08-28-2008 |
| 20080272651 | LED current control circuits and methods - Embodiments of the present invention include circuits and methods for electrical current control. In one embodiment, a regulator provides power to the anode end of a set of LED strings. A current setting circuit derives its current from a current reference and generates multiple matching currents that drive the low side (cathode end) of the set of LED strings. The current setting circuit also contains a feedback signal to the regulator that helps maintain a desired voltage level to the anode end of the LED strings. This embodiment is designed to be expandable and drive any number of LED strings. The present invention may be implemented with a high or low side driver scheme to drive the current. Also, the present invention may be implemented with bipolar, nmos, pmos, or any device that operates as a transistor. | 11-06-2008 |