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Siu, Hong Kong
Frank Pak-Ho Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20130080310 | Returns-Timing for Multiple Market Factor Risk Models - Until recently, risk models have been built using low frequency data, such as weekly or monthly data. This approach has resulted in a necessary compromise between model stability for which one needs a long history of data, and model responsiveness, for which, the shorter the history, the better. Stability plus responsiveness can be achieved if one uses daily data, which allows for a large number of observations to be used in model estimation without using long out-of-date data. Daily data have other problems, however, as the differing closing times of markets worldwide may induce spurious relationships across model factors. In particular, correlations between markets may appear lower than they truly are due to a market lag To address such issues, a stable, daily data-based factor risk model is described which takes account of the differing market closing times and corrects the model factor correlations and specific returns accordingly. | 03-28-2013 |
Johnny Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20120038285 | LED SWITCH CIRCUITRY FOR VARYING INPUT VOLTAGE SOURCE - An LED array switching apparatus, comprises: a plurality of LED segments D | 02-16-2012 |
| 20120038615 | LED SWITCH CIRCUITRY FOR VARYING INPUT VOLTAGE SOURCE - An LED array switching apparatus, comprises: a plurality of LED arrays arranged in a serial path; a voltage supply coupled to the plurality of LED arrays; a plurality of current sources selectively coupled to the LED arrays, each of the current sources being switchable between a current regulating state and an open state; and a controller that outputs at least one control signal. The controller, the at least one switch and current sources cooperate together such that: when the voltage of the voltage source is below the at least one reference voltage, and/or when a predetermined level of current passes through the one or more current sources, at least one switch is closed and one or more associated current sources are controlled so as to break the serial path into one or more parallel paths each including less than all of the LED arrays. | 02-16-2012 |
| 20120056608 | STABILIZING NETWORK FOR ELECTRONIC TRANSFORMER DRIVEN LED DEVICES - A stabilization circuit is provided at an output of an electronic transformer driving circuit having a rectifier fed into a feedback-controlled oscillator circuit that drives an isolation transformer at an output of the electronic transformer driving circuit. The stabilization circuit includes: a current limiting portion that limits an amount of current delivered by the electronic transformer driving circuit. | 03-08-2012 |
Kam Wah Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20110115401 | METHOD AND APPARATUS FOR CONTROLLING BRIGHTNESS OF LIGHT EMITTING DIODES - A circuit for driving a light emitting diode (LED) comprises: an alternating voltage power supply, comprising a triac dimmer having a firing angle and output terminals that provide power to the LED; a zero crossing detector that detects a polarity change of the alternating voltage provided by the alternating voltage power supply and provides a zero crossing output signal indicative of the zero crossing; a timer triggered by the zero crossing output signal that generates a timer output signal during a time period of the timer; and LED power circuitry that reduces current to the light emitting diode based upon timing characteristics of the timer output signal. | 05-19-2011 |
| 20130043799 | LIGHT ENGINE WITH LED SWITCHING ARRAY - An LED array switching apparatus comprises, on a single PCB substrate: a plurality of LED arrays D | 02-21-2013 |
Man Hung Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20090052594 | ROBUST JOINT ERASURE MARKING VITERBI ALGORITHM DECODER - Joint erasure marking Viterbi algorithm (JEVA), decoder schemes, methods, and systems are provided which perform robust trellis decoder techniques. The provided JEVA decoding schemes are shown to be maximum likelihood decoding schemes that find the most likely transmitted code sequence with a set of symbol erasures, without knowledge of the impulsive noise probability distribution function, and can be implemented sequentially such that they are well suited for dynamically changing impulsive noise channels. In addition, the disclosed details enable various refinements and modifications according to decoder and system design considerations. For example, truncated JEVA is provided for continuous transmission and long frame applications. | 02-26-2009 |
Pak Fai Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20100225299 | WALL SCANNER - Embodiments of the invention relate to a wall scanner that includes a housing, a plurality of sensors, a display, and a control section. The housing includes a handle portion and a body portion. The handle portion is adapted to receive a removable and rechargeable battery pack such as a high-voltage lithium-ion (“Li-Ion”) battery pack. The body portion of the housing encloses the plurality of sensing devices, such as, for example, capacitive plate sensors for sensing the presence of a stud behind a surface, a D-coil sensor for identifying the presence of metal behind the surface, and a non-contact voltage sensor for detecting the presence of live wires carrying AC currents. The display is configured to display, among other things, the location of an object behind the surface in real-time, the depth of an object behind the surface, and whether an object behind the surface is ferrous or non-ferrous. The control section includes a plurality of actuation devices for controlling the functions and operations of the wall scanner, such as the scanning mode. | 09-09-2010 |
Siu Hung Felix Guinness Siu, Hong Kong HK
| Patent application number | Description | Published |
|---|---|---|
| 20100284189 | OUTDOOR CHRISTMAS TREE ASSEMBLY - An outdoor Christmas tree assembly includes a cone-shaped frame ( | 11-11-2010 |
| 20110177704 | INDOOR/OUTDOOR CABLE HARNESS SYSTEM - A cable harness system having: a first distal portion having a power socket; a second distal portion having a power plug, the second distal portion being connected to the first distal portion; a power outlet located between the first and second distal portions and interconnected to the power cord. The power outlet having a power socket; an integrated cap having protruding pins which insert into corresponding pin holes of the power socket to prevent water from entering the pin holes of the at least one power socket, the cap releasably covering the power socket by inserting the protruding pins into the power socket when the power socket is not in use, and the cap releasably covering an earth pin hole of the power socket by inserting one protruding pin into an unused pin hole of the power socket when a two pin power plug is inserted into the power socket. | 07-21-2011 |
Tinhoi Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20100200147 | Adhesive bonding method - The present invention provides an adhesive bonding method including: providing a first component and a second component to be bonded and an adhesive; positioning the adhesive between the first component and the second component with the adhesive contacting with the first component and the second component; providing at least one light concentrator; and providing a light source and making at least partial light beams of the light source pass through the light concentrator and the first component in order, and then irradiate on the adhesive to cure the adhesive so as to bond the first component and the second component. The adhesive bonding method of the instant invention can maintain the alignment precision between the components being bonded so as to optimize products' performances. The invention also provides a plate installing device with a light concentrator, which can be installed by the adhesive bonding method above mentioned. | 08-12-2010 |
| 20110194186 | Method for manufacturing polymer miniature lens and collimator including the polymer miniature lens - A method for manufacturing a polymer miniature lens on a substrate with the lens forming pattern, and the liquid polymer is dispensed therein. The lens forming pattern having a periphery area and an interior area, most portion of the periphery area having a property of confining liquid polymer, while the interior area having at least one portion exposing the surface of the substrate; depositing liquid polymer onto the lens forming pattern; and curing the liquid polymer after the liquid polymer reaches equilibrium shape and is confined to the periphery area. The invention also discloses a collimator including the polymer miniature lens. | 08-11-2011 |
| 20110198014 | ADHESIVE BONDING METHOD - The present invention provides an adhesive bonding method including: providing a first component and a second component to be bonded and an adhesive; positioning the adhesive between the first component and the second component with the adhesive contacting with the first component and the second component; providing at least one light concentrator; and providing a light source and making at least partial light beams of the light source pass through the light concentrator and the first component in order, and then irradiate on the adhesive to cure the adhesive so as to bond the first component and the second component. The adhesive bonding method of the instant invention can maintain the alignment precision between the components being bonded so as to optimize products' performances. | 08-18-2011 |
| 20120011286 | Optical communication module, universal serial bus cable with the same and processing method of data transfer thereof - The present invention discloses an optical communication module comprising a second mode supporting a data transfer of USB 3.0 standard and a third mode supporting a data transfer of USB 2.0 standard, and the second mode comprises A mode and B mode with a different power consumption and supported data rate, and a detect unit operative to detect idle state of the data traffic on the data path of USB 3.0 standard to determine to stay on the A mode or enter to the B mode automatically during operation in the second mode. The control circuitry can work in different modes to support different status of devices attachment and removal, different data rate of USB 2.0 and 3.0 standards; and it can real time monitor the data traffic to switch different modes to save power consumption. The present invention also discloses a USB cable and a processing method of data transfer for an optical communication module. | 01-12-2012 |
Wing Ming Siu, Hong Kong HK
| Patent application number | Description | Published |
|---|---|---|
| 20100018678 | Vapor Chamber with Boiling-Enhanced Multi-Wick Structure - A heat transfer device includes a chamber with a condensable fluid with an evaporative region coupled to a heat source. Within the chamber is a boiling-enhanced multi-wick structure. | 01-28-2010 |
Yaulung Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20100112633 | Two-Step Enzyme Method for Preparing 7-Aminocephalosporanic Acid - The present invention discloses a two-step enzyme method for preparing 7-aminocephalosporanic acid from cephalosporin C, wherein D-amino acid oxidase used is purified D-amino acid oxidase mutant of yeast | 05-06-2010 |
Yu Siu, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20090027614 | Multi-purpose spectacle frame set - A spectacle frame set includes a detachable spectacle frame and a utility spectacle frame. The detachable spectacle frame includes two hangers, a lens supporter extended between two inner sides of a pair of optical lenses, two first connectors provided at two front ends of the hangers respectively to detachably couple with two outer sides of the optical lenses respectively. The optical lenses are selectively assembled with the detachable spectacle frame or disassembled from the detachable spectacle frame to detachably mount the optical lenses behind the utility spectacle frame at a position that the optical lenses are overlapped aligned with the utility lenses of the utility spectacle frame respectively. | 01-29-2009 |
Yu Siu, Hong Kong HK
| Patent application number | Description | Published |
|---|---|---|
| 20080284974 | Interchangeable decorative arrangement for spectacles - A spectacle frame includes two lenses, a frame body holding said two lenses in position, and an interchangeable decorative arrangement which includes one or more personalizing elements detachably and interchangeably affixing at a personalizing portion of the frame body, wherein the personalizing element, having a shape corresponding to the personalizing portion of said frame body, forms an add-on personal decorative item to personify the frame body so as to enhance an aesthetic appearance of the spectacle frame. | 11-20-2008 |
| 20100073627 | Spectacles - A pair of rimless spectacles includes two lenses, a frame including two temple units and a bridge, and a connection mechanism. The connection mechanism includes a plurality of first connectors spacedly provided at the lenses at a predetermined location and a plurality of second connectors provided at a predetermined location of each of the temple units and the bridge respectively, wherein the second connectors are coupled with the first connectors respectively to couple the temple units at two outer sides of the lenses respectively and to couple the bridge between two inner sides of the lenses respectively in a tool-less manner. | 03-25-2010 |