Choi, CN
Hoi Wai Choi, Kennedy Town CN
Patent application number | Description | Published |
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20100084668 | SEMICONDUCTOR COLOR-TUNABLE BROADBAND LIGHT SOURCES AND FULL-COLOR MICRODISPLAYS - Methods and systems are provided that may be used to utilize and manufacture a light sources apparatus. A first light emitting diode emits light having a first wavelength, and a second light emitting diode for emitting light having a second wavelength. Each of the first and second light emitting diodes may comprise angled facets to reflect incident light in a direct toward a top end of the first light emitting diode. The second light emitting diode comprising angled facets may reflect incident light in a direction toward a top end of the second light emitting diode. A first distributed Bragg reflector is disposed between the top end of the first light emitting diode and a bottom end of the second light emitting diode to allow light from the first light emitting diode to pass through and to reflect light from the second light emitting diode. | 04-08-2010 |
Hon Man Choi, Kowloon CN
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20090090803 | RETRACTOR APPARATUS FOR ELECTRICAL CORD - A modular cord retractor apparatus includes a spring-driven reel and may be used with a range of different electrical appliances incorporating a dual conductor cord. Fixed and rotating electrical contact pairs provide power to the cord reduce noise and wear. Rotating contacts are disposed at axially opposing ends of an axle assembly supporting the reel. Each rotating contact has a contact surface intersecting the axis and each fixed contact is mounted to a fixed reel mount. The axle assembly includes first and second axle portions of a dielectric material, each receiving a respective electrically-conductive strip, with the rotating contacts located proximate one end of each strip. | 04-09-2009 |
Jobong Choi, Shanghai CN
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20090152608 | DRAM Cell Transistor Device and Method - A method for forming a memory device. The method provides a protective layer overlying a surface region of a substrate before threshold voltage implant. The method then includes depositing a photo resist layer and patterning the photo resist by selectively removing a portion of the photo resist to expose the protective layer overlying a first region while maintaining the photo resist overlying a second region. The method includes implanting impurities for threshold voltage adjustment into the first region while the second region is substantially free of the impurities for threshold voltage adjustment. The method also includes forming a source region and a drain region. The method further includes providing a conductive structure over the source region. A junction between the conductive structure and the source region is substantially within the second region. The method then provides a storage capacitor in electrical contact with the source region via the conductive structure. | 06-18-2009 |
20110215389 | DRAM CELL TRANSISTOR DEVICE AND METHOD - A semiconductor integrated circuit device includes a substrate, a well structure within the substrate, a first region, a second region, and multiple isolation regions within the well structure. The device further includes a channel region within the first region, a gate dielectric layer overlying the channel region, and a gate stack overlying the gate dielectric layer, the gate stack includes a silicide layer overlying a polysilicon layer. The device additionally includes LDD structures on sides of the channel region and spacers on sides of the gate stack. Furthermore, the device includes a source region and a drain region and a contact structure over the source region, and a junction between the contact structure and the source region being within the second region. | 09-08-2011 |
Ka-Cheng Choi, Macau CN
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20150325246 | REVERSIBLE AUDIO DATA HIDING - The present invention provides a method of reversible audio data hiding. The method of data hiding and restoring comprises the steps of: protecting audio by embedding information into the audio according to variance calculation associated to the audio, wherein the quality of the protected audio is degraded after embedding the information into the audio; publishing the protected audio widely as a trial for listen version; and decoding the protected audio for a user who purchased the copyright of the audio by extracting the original audio from the protected audio. | 11-12-2015 |
Kwanjun Choi, Xiamen, Fujian CN
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20160115708 | RAM ON TOP OF TENT - Disclosed is a ram assembly for use on the top of a tent where tops of supporting rods of the tent are connected to a top connecting seat. The ram assembly includes at least one ram connected to the top connecting seat and located between two adjacent supporting rods. The ram assembly supports an eave tarpaulin and allows the eave tarpaulin to unfold. The eave tarpaulin is located on the top of the tent and between at least the two adjacent supporting rods. An outer edge of the cave tarpaulin sleeves on the ram. The ram assembly is an elastic telescopic rod. | 04-28-2016 |
Kwan Jun Choi, Xiamen CN
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20090314322 | MECHANISM FOR OPENING AND CLOSING A FOLDABLE TENT OR AWNING - A mechanism for opening and closing a tent or awning is disclosed. A plurality of poles are pivotally attached to a hub at upper engagement points. A plurality of braces are pivotally coupled to the poles at lower engagement points at one end and pivotally coupled to a base at another end. The base has a shaft slidable in the hub and the shaft houses a biasing member which generates an upward force on the shaft which is transmitted to the braces and the poles. The upward force urges the poles to pivot toward the open position when the lower engagement point is radially outward of the upper engagement point, and the upward force urges the poles to pivot toward the closed position when the lower engagement point is radially inward of the upper engagement point. | 12-24-2009 |
20110073148 | Collapsible tent frame with retractable eaves - A collapsible tent structure includes a plurality of poles coupled with a plurality of linkages. The tent structure also includes a plurality of rods where each rod is pivotally coupled to each pole on one end and pivotally coupled to a hub on an opposite end. A plurality of struts are further included in the tent structure and each strut is pivotally coupled to each rod on one end and pivotally coupled to each pole on an opposite end, and a locking mechanism is coupled to each of the rods. A plurality of eaves, each pivotally coupled to a locking mechanism, extend radially outward beyond the poles when in an extended position and retracted radially inward of the poles when in a retracted position while the tent is in an open configuration. | 03-31-2011 |
20140202511 | Mechanism for Folding and Unfolding a Tent or Awning - A mechanism for folding and unfolding the top of a tent comprises a connecting seat, a sliding seat and an elastic telescopic part, wherein the connecting seat is connected with a tent top rod in a pivoted mode, and the sliding seat is connected with a connecting part in a pivoted mode and moves up and down with respect to the connecting seat. The other end of the connecting part is connected onto the tent top rod in a pivoted mode. The middle portion of the connecting seat extends downwards to form an accommodating seat which accommodates the elastic telescopic part. The upper portion of the sliding seat forms a sinking seat which has an outer diameter larger than that of the accommodating seat. | 07-24-2014 |
20140290710 | Tent Frame - The utility model discloses a tent frame, comprising two groups of supporting frame rods, wherein two groups of supporting frame rods are arranged side by side, and two supporting frame rods are expanded to form a V shape; wherein each supporting frame rod comprises two upright rods and top rods which are movably connected to top ends of the upright rods respectively, the two top rods are connected by a one-way connecting piece which has an angle limit and is folded downward, and the upright rods and the top rods are connected by a one-way connecting piece which has an angle limit and is folded upward. The lower end of each upright rod is connected to a bottom pivoting seat, each bottom pivoting seat is provided with two pivoting ports for connecting to the upright rods, and two groups of supporting frame rods are connected between two bottom pivoting seats. The utility model is simple in structure, can be folded conveniently and fast into a small volume, and is convenient to use. | 10-02-2014 |
20140311540 | SHELTER FRAME WITH TRANSVERSE MEMBER - Disclosed is a foldable frame for supporting a shelter, e.g., a tent or awning, including a supported tent cloth, top transverse rod, auxiliary top rods, and vertical rods connected to the auxiliary top rods. The frame of the utility model is simple in structure and convenient to use, and the usable area of a shelter supported by the frame can be increased even though the number of rods is not increased. | 10-23-2014 |
20140338711 | CONTROL STRUCTURE FOR FOLDING A SHELTER - Described is a control structure for unfolding and folding a collapsible device or shelter. The control structure includes a sliding seat that is pivotally connected to adapter members, which are in turn connected to poles, e.g., tent poles. The tent poles are also pivotally connected to a lower support, and a resilient member (e.g., a spring) forces a separating between the sliding seat the the lower support. The resilient member biases the sliding seat toward the lower support to maintain the control structure in an unfolded position when open, and in a folded position when closed. | 11-20-2014 |
20150159397 | TOP CONNECTING APPARATUS FOR A SHELTER FRAME - Disclosed is an apparatus for folding and unfolding a shelter frame, e.g., a tent. A plurality of radially arranged connecting bosses is situated on a connecting piece. A pivoting member pivotally attaches to the connecting boss, and a shelter frame rod attaches to the pivoting member. In the folded position, the pivoting members are rotated toward the center of the apparatus. In the unfolded position, the pivoting members are rotated away from the center of the apparatus. The apparatus is rapidly and easily assembled. | 06-11-2015 |
20150184417 | Tent Frame - Disclosed is a frame for supporting a tent in folded and unfolded states comprising groups of supporting frames and resembling the letter āWā in the unfolded state. Sub-frames within the supporting frames comprise upright rods pivotally connected at their respective bottoms, the sub-frames resembling the letter āVā in the unfolded state. The frame of the utility model is simple in structure, large in supporting space, flexible in structure, and convenient to use. | 07-02-2015 |
20150208808 | MOON CHAIR - A moon chair includes front supporting legs, rear supporting legs and a rest frame connected onto the front and rear supporting legs. The rest frame is of the shape of a circular ring obliquely erected when the rest frame is unfolded. The front and rear supporting legs are connected with the rest frame through first and second connecting seats, respectively. Each of the first or second connecting seats comprises an integral bent metal sheet. The two ends of the metal sheet are respectively provided with pin holes for arranging connecting pins in a penetrating manner. The metal sheets on the first or second connecting seats are respectively and movably connected with the front or rear supporting legs and the rest frame through the connecting pins. One end of the metal sheet on a first connecting seat is bent to a U-shape to cover the corresponding front supporting leg. | 07-30-2015 |
20150284974 | Tent Frame Top Connecting Structure - Disclosed is a tent frame top connecting structure comprising top levers movably connected to a connecting piece, connecting grooves, positioning grooves, sidewalls, lateral walls, a top portion, a bump stopper, and a moving fulcrum. Top levers serve as installation tools. The structure is simple and convenient to assemble. | 10-08-2015 |
20150296975 | FOLDING BAR TABLE - A folding bar table for removably supporting a canopy includes a plurality of tabletop assemblies with each two adjacent tabletop assemblies rotatably connected to each other, a plurality of table leg assemblies for supporting the tabletop assemblies, and fastening components disposed at two ends of the rotatably connected tabletop assemblies for holding supporting poles of the canopy; a table leg assembly includes a standing pole and a movable pole, and one end of the movable pole is rotatably connected to the standing pole; for two adjacent tabletop assemblies, one tabletop assembly is rotatably connected to a corresponding movable pole, and the other tabletop assembly is rotatably connected to a corresponding movable pole; all rotational axes are substantially parallel to each other; the rotatably connected tabletop assemblies present a straight layout when unfolded. | 10-22-2015 |
20150359339 | FOLDING CHAIR - A folding chair includes a chair frame. The frame includes left and right side stands, front and rear cross supporting rod assemblies, seat rods, backrest rods and left and right side upright poles. Each side stand includes a front leg that leans backward and a rear leg that is coupled to the front leg and supports the front leg. The front or rear cross supporting rod assembly includes two front cross supporting rods. The seat rods are connected to the front legs, rear legs and upright poles. The backrest rods are connected to the rear legs. The upright poles are movably connected to the front legs. | 12-17-2015 |
20150359344 | CUP HOLDER FOR CHAIR - A cup holder for a chair includes a cup holder fixing seat, a cup holder middle sleeve and a cup bottom. The fixing seat includes a connecting part and a first limiting rim. The middle sleeve includes second and third limiting rims and at least one first detention. The cup bottom includes a fourth limiting rim and at least one second detention. The second limiting rim is slidable along an inner wall of the fixing seat, and the fourth limiting rim is slidable along an inner wall of the middle sleeve. When unfolded, the second limiting rim of the middle sleeve is seated on and supported by the first limiting rim of the fixing seat, the fourth limiting rim of the cup bottom is seated on and supported by the third limiting rim of the middle sleeve. | 12-17-2015 |
20150376913 | HIGH-CEILING TENT FRAME - A high-ceiling tent frame includes one or more frame units. Each frame unit includes three or more vertical poles and a center pole connected by supporting pole groups. Each frame unit also includes vertical pole fixed and slidable connecting bases installed at the vertical poles, and center fixed and slidable connecting bases installed at the center pole. Each supporting top pole group includes one or more pairs of first connecting pole units. The first connecting pole units in each pair are pivotally connected to each other. Each first connecting pole unit includes two first connecting poles pivotally connected to each other and forms an X-shape when the tent frame is unfolded. Adjacent frame units are connected to each other by sharing at least two vertical poles. | 12-31-2015 |
20160051041 | PORTABLE FOLDING TABLE - An improved portable folding table includes a folding frame and a table top supported by the folding frame. The folding frame includes a connecting sleeve, supporting blocks, supporting rods coupled to the connecting sleeve and the supporting blocks and first/second cross-bars coupled to the supporting blocks. The table top includes a tablecloth, third/fourth cross-bars at the bottom of the tablecloth and coupled to the supporting blocks, auxiliary cross-bars positioned between the third and fourth cross-bars and holders fixedly attached to the bottom of the tablecloth to receive ends of the auxiliary cross-bars. The holders prevent the auxiliary cross-bars from sliding out during normal operation. | 02-25-2016 |
20160051054 | FOLDABLE CHAIR WITH STRAP - A portable foldable chair includes a frame, a fabric attached to the frame, and a strap. The frame includes supporting rods including two front and two back-rest rods, bases provided at bottoms of the front and back-rest rods, pivoting seats provided on the front and back-rest rods, and pairs of crossing rods disposed between two adjacent supporting rods. A pair of crossing rods includes two crossing rods pivotally coupled to each other. Each crossing rod in one pair has a lower end pivoted to the base provided at the bottom of one supporting rod, and an upper end pivoted to the pivoting seat provided on the adjacent supporting rod. The strap has one end fixedly attached to the base of one back-rest rod and the other end fixedly attached to the chair fabric in proximity to a top of the other back-rest rod. | 02-25-2016 |
Kwan Jun Choi, Xiamen City CN
Patent application number | Description | Published |
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20150265054 | FOLDING CHAIR - A folding chair includes a seat frame and a chair cloth connected to the seat frame. The seat frame includes a plurality of supporting rods including two front rods and two backrest rods, and a plurality of crossed bearing rods. Two crossed bearing rods arranged between each two adjacent supporting rods to form a plurality of facades. The lower end of each crossed bearing rod is pivotally connected to a base disposed on one of the two adjacent supporting rods and the upper end is pivotally connected to a pivot base disposed on the other of the two adjacent supporting rods. The pivot base is slidable along the other of the two adjacent supporting rods to provide support and positioning. A distance between two adjacent bases is less than a distance between two adjacent pivot bases such that the backrest rods are able to tilt backward. | 09-24-2015 |
Meichee Choi, Shenzhen City, Guangdong Province CN
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20150327716 | FULL-AUTOMATIC TEA-MAKING MACHINE - An automatic tea-making machine, comprising a base assembly and a tea-making assembly arranged on the base assembly. A water pump configured to pump water to the tea-making assembly and a motor are arranged on the base assembly. The tea-making assembly includes a tea-making cavity with an open top part, a closed bottom part and a closed peripheral wall; a tea basket driven by the motor, and a drain valve arranged at a bottom of the tea-making cavity and communicated with the tea-making cavity. The automatic tea-making machine of the present application can automatically wash tea and make tea, which is very convenient to use. | 11-19-2015 |
Sui Cheung Choi, Fanling CN
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20100033964 | LIGHT EMITTING DIODE (LED) LIGHTING DEVICE - The present invention is an alternative lighting technology to form light emitting diode (LED) light tube. The tubular or circular LED tube is formed by transparent plastic and a metal heat sink that includes LEDs soldered onto a metal core printed circuit board with a special arrangement to achieve greater brightness than an equal distance arrangement. All LEDs are directly inserted into the metal core printed circuit board with a unique insulation coating to allow the LED anode and cathode to be inserted into the metal core printed circuit board and soldered on the opposite side of the metal core printed circuit board. It can connect one or more control units to control intensity. | 02-11-2010 |
Vincent Choi, Guangdong CN
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20090130044 | Skin Care Method Using Wax and the Apparatus Thereof - A skin-treatment method using wax is provided, which includes preheating a skin-treatment wax filled in containers with nozzles in a heating device to melt the wax into a liquid wax capable of being sprayed, and spraying the liquid wax filled in the containers with nozzles in the heating device on a surface of the skin under treatment so as to form a wax mask. A skin-treatment tool using wax is also provided, which includes a heating device for preheating a skin-treatment wax placed therein to melt the wax into a liquid wax capable of being sprayed, and at least one container with a nozzle disposed in the heating device. The skin-treatment tool of the present invention has a compact structure and is convenient to use, which has been widely used in beauty parlors, houses, apartments, hotel rooms, lounges, and other places capable of conducting skin treatments using wax on the spot. The method and tool of the present invention do not generate cross infection of skin bacteria and virus, which meet the sanitary requirements. The liquid wax is not solidified during the spraying process away from the heat source, and the operation is continuously performed. | 05-21-2009 |
Wai-Hei Choi, Macau CN
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20140055104 | Adaptive DC-link voltage controlled LC coupling hybrid active power filters for reactive power compensation - An adaptive dc-link voltage controlled LC coupling hybrid active power filter (LC-HAPF) for reactive power compensation includes: two dc capacitors to provide dc-link voltage; a three-phase voltage source inverter to convert dc-link voltage into compensating voltages; three coupling LC circuits to convert compensating voltages into currents; and an adaptive dc voltage controller with reactive power compensation control algorithm. The control algorithm includes: first, calculating required minimum dc-link voltage in each phase with respect to loading reactive power; three-phase required minimum dc-link voltage will be maximum one among their minimum values; compare it with predetermined voltage levels to determine final reference dc-link voltage. A dc-link voltage feedback P/PI controller outputs dc voltage reference compensating currents. An instantaneous power compensation controller outputs reactive reference compensating currents. The final reference compensating currents will be sum of them. A PWM circuit provides LC-HAPF adaptive dc-link voltage control and dynamic reactive power compensation. | 02-27-2014 |
Wai Shun Choi, Hong Kong Sar CN
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20080244144 | HAND-HELD REMOTE CONTROL FOR ELECTRONIC ENTERTAINMENT APPLIANCE - A hand-held remote control includes an emitter for emitting a control signal recognizable by an entertainment appliance. The housing of the remote control includes a longitudinally-extending recess for receiving a portable media player. A first interface device within the recess communicates with a second interface device of the portable media player when the portable media player is received in the recess. An electromagnetic radiation transmitter is disposed within the housing for transmitting data received from the first interface device. | 10-02-2008 |
Young-Joon Choi, Suzhou CN
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20130067142 | FLASH MEMORY STORAGE DEVICE AND METHOD OF JUDGING PROBLEM STORAGE REGIONS THEREOF - A method of judging problem storage regions adapted for a flash memory storage device includes steps of: sending a writing order to a flash memory chip for writing a written data to an appointed storage paging; when the flash memory chip beginning writing the written data to the appointed storage paging, getting the first time; when the flash memory chip finishing writing the written data to the appointed storage paging, getting the second time; calculating a writing time according to the first time and the second time; if the writing time not coincident with a standard value, then labeling the appointed storage paging as a problem storage region and copying the written data to a backup paging; updating a Mapping Table. | 03-14-2013 |