Patents Assigned to Ambit Microsystems (Shanghai) Ltd.
  • Patent number: 8237420
    Abstract: An inrush current suppressing circuit connected between a power supply and a working circuit of an electronic device includes a first power supply circuit and a second power supply circuit both connected between the power supply and the working circuit. The first power supply circuit suppresses inrush current and forwards power from the power supply to the working circuit when the electronic device is powered on. The second power supply circuit forwards power from the power supply to the working circuit when the power supply reaches a predetermined voltage.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: August 7, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: An Liu
  • Patent number: 8238091
    Abstract: A locking mechanism includes a tray to receive a hard disk drive and a locking apparatus. The locking apparatus includes a base attached to a front wall of the tray, a handle pivotally connected to the base, and a locking member attached to the base. The base defines a receiving chamber and a mounting hole in communication with the receiving chamber. The locking member includes a sliding portion slidably received in the receiving chamber of the base to impel the handle to pivot relative to the base, and a locking tongue attached to the sliding portion. Movement of the locking tongue relative to the mounting hole causes the locking mechanism to toggle between a locked and unlocked position.
    Type: Grant
    Filed: May 31, 2010
    Date of Patent: August 7, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chih-Kai Chang, Song Gao, Cai-Wen Xu
  • Patent number: 8224267
    Abstract: A radio frequency (RF)-based communication terminal includes a first switching chip, a second switching chip, a comparison module, a low noise amplifier (LNA), a first filter, a power amplifier (PA), a second filter, and a control module. The comparison module compares the power of a radio signal Rx received from a base station with a pre-stored signal and to output a control signal according to the comparison result. The control module controls conductive modes of the first and the second switching chips according to the control signal. In the first conductive mode, a radio signal Tx is sent out from the PA and the second filter. In the second conductive mode, the radio signal Tx is exchanged to send out from the LNA and first filter.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: July 17, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Ai-Ning Song, Teng-Huei Chu, Chang-Pu Lin, Chong Xu, Qi-Jian Hu
  • Patent number: 8217840
    Abstract: A dual-band antenna assembly is positioned on a substrate, and includes an insulation body, a plane antenna and a microstrip antenna. The insulation body includes a plane surface paralleled to the substrate, and a side surface perpendicularly extending from edges of the plane surface to the substrate. The plane antenna includes a first feed portion and a first radiator. The first feed portion passes through the substrate to the plane surface of the insulation body. The first radiator is substantially positioned on a center of the plane surface of the insulation body, and electrically connected to the first feed portion. The microstrip antenna includes a second feed portion and a second radiator. The second radiator is a microstrip, electrically connected to the second feed portion and positioned on the side surface of the insulation body.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: July 10, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Min Chen, Cho-Ju Chung
  • Patent number: 8218319
    Abstract: An electronic device includes a fan including a frame, an enclosure, and many fixing members engaged with the enclosure to fix the fan in the enclosure. The frame includes many mounting holes positioned in corners of the frame, respectively. The enclosure includes many sidewalls and many fixing members corresponding to the mounting holes. Each fixing member includes a base, a fixing portion extending from a top surface of the base, an angle shaped clasping portion extending from a sidewall of the base. Each base includes a locating block received in a corresponding locating member, and at least one fixing arms abuts against the corresponding locating member. Each fixing portion extends through the locating member and is received in a corresponding mounting hole. Each clasping portion extends through the corresponding locating member and clasps an inner wall of the corresponding mounting hole.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: July 10, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Bao-Kun Wu
  • Patent number: 8203087
    Abstract: A key assembly used in an electronic device includes a printed circuit board (PCB) including two optical couplers, a key body and a supporting assembly. The key body is rotatably supported on the PCB and includes a circular disk and a plurality of teeth. The plurality of teeth extend from periphery edge of the circular disk toward the PCB and are spaced apart from each other. The supporting assembly supports the key body on the PCB. When the key body is rotated, the plurality of teeth interact with the two optical couplers to generate one or more control signals to control corresponding one or more operations of the electronic device.
    Type: Grant
    Filed: March 21, 2010
    Date of Patent: June 19, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Wang-An Hu, Jian-Jun Liu, Li Sun, Kuo-Wei Hung, Rong Li
  • Patent number: 8152556
    Abstract: An electric connector includes a female connector and a male connector. The female connector defines a first sliding groove, a second sliding groove parallel to the first sliding groove and a guiding slot communicating with the first sliding groove and the second sliding groove. The guiding slot includes a first guiding slot and a second guiding slot communicating the first guiding slot with the second sliding groove. The first sliding groove and the first guiding slot collectively form a step portion. The male connector includes a latching hook to engage with the first sliding groove and the second sliding groove. The latching hook slides along the first sliding groove to be received in the first guiding slot and resist on the step portion to combine the male connector with the female connector. The latching hook sides along the second guiding slot to release the male connector from the female connector.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: April 10, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Bao-Kun Wu
  • Patent number: 8113862
    Abstract: An accessory printed circuit board (PCB) fixture is used in an electronic device to fix an accessory PCB. One end of the accessory PCB electronically connects to an edge connector of a main PCB located in the electronic device. The other end of the accessory PCB defines at least two holes. The accessory PCB fixture includes at least one positioning foot fixed on the main PCB, at least two latch portions and a connecting portion rigidly connecting the positioning foot with the latch portions. The latch portions match the holes of the accessory PCB to fix the accessory PCB. Each latch portion includes a supporting portion, a positioning portion and a hook. One surface of the accessory PCB is supported on the supporting portions. The positioning portions are received in the holes of the accessory PCB. The hooks are latched on the other surface of the accessory PCB.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: February 14, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Dong Wei
  • Patent number: 8094076
    Abstract: A multiband antenna includes a feed portion, a radiating portion, and a ground via. The feed portion includes a first feed section and a second feed section paralleled to each other. The radiating portion includes a first radiator, a second radiator and a third radiator. The first radiator is L shaped with a free end. The second radiator is L shaped with a free end. The free ends of the second radiator and the first radiator extend toward to each other and partially overlap to define a slot therebetween. The third radiator includes a trapezoid section and a connecting section. The short portion includes a first short section and a second short section. The first short section connects the first radiator to the ground via, and the second short section connects the second radiator and the third radiator to the ground via.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: January 10, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chong Zhang, Cho-Ju Chung
  • Patent number: 8089752
    Abstract: A hard disk drive holder fixes hard disk drives in electronic equipment, and includes at least one handling assembly and a bracket for receiving the handling assemblies. Each of the handling assemblies is fixed to one of the hard disk drives to push or pull the hard disk drive into or out from the bracket for replacement or repair, and includes a handle and a pair of handle seats. The handle includes a holding portion and two extending portions including a convex block. Each of the handle seats includes a housing cavity and a spring clip. The spring clip includes a first stopper portion, a second stopper portion and a hook portion. The convex block is movable between the first stopper portion and the second stopper portion to limit movement range of the handle.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: January 3, 2012
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Cai-Wen Xu, Chih-Kai Chang
  • Patent number: 8062434
    Abstract: A cleaning device to clean a plurality of nozzles of a surface-mount technology (SMT) includes a first cleaning container, a supporting board, a filtering member, a second cleaning container and a connection member. The first cleaning container defines a first opening in a bottom thereof. The supporting board to fix the plurality of nozzles is connected to the bottom of the first container. The filtering member is located at a bottom of the supporting board. The second cleaning container is connected to the filtering member, and operable to receive cleaning fluid. The connection member is connected the first cleaning container and the second cleaning container. Injection of air to the first cleaning container and the second cleaning container allows the cleaning fluid to circularly flow through the second cleaning container, the connection member, the first cleaning container, the supporting board, and the filtering member to clean the plurality of nozzles.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: November 22, 2011
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Bin Yi, Xin-Sheng Wang, Li Cong
  • Patent number: 8024435
    Abstract: A method for configuring IP addresses of a router broadcasts a dynamic host configuration protocol (DHCP) discover packet over a network for receiving a DHCP offer packet sent from the modem. The DHCP offer packet comprises the private IP address of the modem. The method further obtains the private IP address of the modem from the DHCP offer packet, and configures IP addresses of a WAN port and a LAN port of the router according to the private IP address of the modem, so as to allow the private IP address of the modem to be in the same network segment with the IP address of the WAN port but in different network segments with the IP address of the LAN port.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: September 20, 2011
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Hong-Jian Guo, Yang Liu
  • Publication number: 20110221046
    Abstract: A semiconductor assembly package includes a package unit, a shielding layer and a protection layer. The package unit includes a semiconductor assembly, a daughter substrate and a mold compound. The semiconductor assembly is disposed on and electrically connected to the daughter substrate. The daughter substrate includes a metal portion grounded. The mold compound encapsulates the semiconductor assembly and the daughter substrate to expose the metal portion out of the package unit. The shielding layer is applied to the package unit and electrically connected to the metal portion, to provide electromagnetic shielding for the semiconductor assembly. The non-conductive protection layer is covered on the shielding layer.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 15, 2011
    Applicants: Ambit Microsystems (Zhongshan) LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: JUN-YI XIAO
  • Patent number: 7994841
    Abstract: A dual temperature control circuit detects a first temperature of a first location and a second temperature of a second location. The dual temperature control circuit transforms the first temperature to a first voltage signal, and transforms the second temperature to a second voltage signal, and compares the first voltage signal and the second voltage signal to output a third voltage signal, where a controlled circuit is controlled according to the third voltage signal.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: August 9, 2011
    Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Fei Chen, Wu-Kui Li
  • Patent number: 7082123
    Abstract: A redial system for a VoIP modem includes a subscriber line interface circuit (SLIC) for interfacing analog telephone signals from a telephone set to the VoIP modem and for generating redial signals to a public switched telephone network (PSTN), a first relay for connecting the telephone set with the PSTN or connecting the telephone set with the SLIC, a dummy load, a second relay connected between the PSTN and the dummy load for establishing or de-establishing a connection between the PSTN and the dummy load, a third relay connected between the first relay and the SLIC for establishing or de-establishing a connection between the first relay and the SLIC, and a control circuit for controlling the second and third relays to establish the connection between the PSTN and the dummy load and de-establish the connection between the first relay and the SLIC during the generation of the redial signals.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: July 25, 2006
    Assignee: Ambit Microsystems Corp.
    Inventors: Ying-Chieh Huang, Chih-Cheng Huang, Ching-Mao Yeh
  • Patent number: 6940502
    Abstract: A liquid crystal display (LCD) device has a housing acting as a conductor, a plurality of circuits, and at least a filter unit. Each circuit has a reference voltage terminal electrically connected to a reference voltage level. When the reference voltage terminal of each circuit is electrically connected to the housing, one filter unit is electrically connected between the housing and a ground terminal. When the housing is electrically connected to the ground terminal, a plurality of filter units are respectively connected between the housing and the reference voltage terminal of each circuit.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: September 6, 2005
    Assignee: Ambit Microsystems Corp.
    Inventors: Wei-Hong Lin, Chin-Der Wey, Teng-Ho Wu
  • Patent number: 6914978
    Abstract: A pulse dialing system for a VoIP modem includes a subscriber line interface circuit (SLIC) for interfacing analog telephone signals to digital signals, a relay for selectively connecting a telephone set with a public switched telephone network (PSTN) or with the SLIC, and a control means, coupled to the SLIC and to the relay, for receiving a digit of a dialed telephone number and for controlling the relay to connect the telephone set with the PSTN and with the SLIC alternatively for a number of cycle(s) equal to the digit of the dialed telephone number so as to generate pulse dialing signals to the PSTN.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: July 5, 2005
    Assignee: Ambit Microsystems Corp.
    Inventors: Ying-Chieh Huang, Chung-Ho Wu, Chih-Cheng Huang
  • Patent number: 6788005
    Abstract: An inverter for igniting a discharge lamp comprises a transformer, a first switch transistor, a second switch transistor, a first snubber capacitor, a second snubber capacitor, a reset capacitor, and a control circuit. One of the source/drain of the first switch transistor is electrically coupled to the primary side of the transformer. One of the source/drain of the second switch transistor is electrically coupled to the primary side of the transformer. The first snubber capacitor is electrically coupled between the source and the drain of the first switch transistor. The second snubber capacitor is electrically coupled between the source and the drain of the second switch transistor. The reset capacitor is electrically coupled between the other of the source/drain of the first switch transistor and the other of the source/drain of the second switch transistor.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: September 7, 2004
    Assignee: Ambit Microsystems Corp.
    Inventors: Yi-Shan Chu, Cheng-Chia Hsu
  • Patent number: 6744642
    Abstract: A transformer reset circuit includes a first capacitor serially connected to a transformer winding, a rectifier connected in parallel with the first capacitor and the transformer winding, a second capacitor, an auxiliary switch connected in series with the second capacitor to form a series circuit connected in parallel with the rectifier, and a switch control circuit. The switch control circuit can turn on the main switch and turn off the auxiliary switch to release magnetizing energy stored in an inductor to charge the first capacitor. The auxiliary switch can be turned on and the main switch can be turned off to transfer the magnetizing energy stored in the inductor and the energy stored in the first capacitor to the second capacitor. After the energy stored in the inductor is dissipated, the second capacitor charges the inductor and the first capacitor to reverse the magnetic field in the inductor so as to reset the transformer.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: June 1, 2004
    Assignee: Ambit Microsystems Corp.
    Inventor: Guo-Kiang Hung
  • Publication number: 20040081141
    Abstract: A method for a digital subscriber line device to process dial string. The digital subscriber line device is coupled to a PSTN (public switched telephone network) and a VoIP network. First, a transmission is received by the digital subscriber line device. Then, the dial string of the transmission is compared with phone numbers stored in a PSTN digit map and in a VoIP digit map by a PSTN digit string processor and a VoIP digit string processor, respectively. The transmission is routed to the PSTN network when a phone number corresponding to the transmission is found in the PSTN digit map. The transmission is routed to the VoIP network when a phone number corresponding to the transmission is found in the VoIP digit map.
    Type: Application
    Filed: August 27, 2003
    Publication date: April 29, 2004
    Applicant: Ambit Microsystems Corporation
    Inventors: Ming-Chieh Chen, Shu-Ken Lin