Patents by Inventor Cheng Wen

Cheng Wen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070263067
    Abstract: A slide mobile camera phone comprises a display part and an operation part. The display part comprises a viewing side and a joining side, and the joining side further comprises a camera lens. The operation part comprises an operating side and a back side, and the operating side further comprises a set of zoom lenses, wherein the joining side is able to slide on the back side so that the display part and the operation part can either essentially totally or partially overlap. If the display part and the operation part partially overlap, then the camera lens is configured to capture images directly; and if the display part and the operation part essentially totally overlap and the camera lens overlaps the set of zoom lenses, then the camera lens is configured to capture images after zooming via the set of zoom lenses.
    Type: Application
    Filed: May 10, 2006
    Publication date: November 15, 2007
    Inventors: Cheng-Wen Huang, Shun-Yi Lian
  • Publication number: 20070263562
    Abstract: A method for identifying management frames includes: receiving a management frame; determining a new state according to the management frame; transmitting a class frame to an expected source device according to the new state, wherein a class of the class frame is higher than that of a frame corresponding to the new state; determining whether an expected frame is received, wherein a type of the expected frame is the same as that of the management frame; and determining that the management frame is a true frame transmitted from the expected source device if the expected frame is received. A device employing the method is also provided.
    Type: Application
    Filed: November 25, 2006
    Publication date: November 15, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG
  • Publication number: 20070254615
    Abstract: A system for identifying an access point is provided, the system arranged in a mobile station associated with the access point. The system includes a detecting module, a controlling module, a determining module, and an identifying module. The detecting module detects a beacon from the access point. The controlling module controls a connection status between the mobile station and the access point. The determining module determines whether the number of the mobile stations associated with the access point varies with changes in the connection status. The identifying module identifies a status of the access point based on a determination result. A method for identifying an access point is also provided.
    Type: Application
    Filed: August 26, 2006
    Publication date: November 1, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG
  • Publication number: 20070248259
    Abstract: An apparatus for reconstructing multi-dimensional image data is used for generating a three-dimensional image of an object. An image block-rearranging unit is used for reconstructing the sub-blocks according to a plurality of two-dimensional images. A storage unit is used for storing the sub-blocks and the two-dimensional images. Next, an image-reconstructing unit reads the data of the sub-blocks from the storage unit to reconstruct the three-dimensional image of the object. When the three-dimensional image of the object is reconstructed, the data hit rate is increased so as to enhance the reconstruction speed of the three-dimensional image.
    Type: Application
    Filed: April 21, 2006
    Publication date: October 25, 2007
    Inventor: Cheng-Wen Liu
  • Publication number: 20070236251
    Abstract: A level-shifting apparatus and a panel display apparatus using the same are disclosed. The level-shifting apparatus is used for receiving and changing the level of an input signal to generate an output signal. The level-shifting apparatus includes a first unit and a second unit. The first unit is for deciding whether a first switching signal and a second switching signal are to be output according to the input signal and the output signal. The second unit generates the output signal according to the first switching signal and the second switching signal. Wherein, the input signal is operated between a first level and a second level, while the output signal is operated between a third level and a fourth level.
    Type: Application
    Filed: June 27, 2006
    Publication date: October 11, 2007
    Inventor: Cheng-Wen Chang
  • Publication number: 20070232240
    Abstract: The present invention discloses a probing system for integrated circuit devices, which transmits testing data between an automatic test equipment (ATE) and an integrated circuit device. The ATE includes a first transceiving module, and the integrated circuit device includes a core circuit, a built-in self-test (BIST) circuit electrically connected to the core circuit, a controller configured to control the operation of the BIST circuit, and a second transceiving module configured to exchange testing data with the first transceiving module. Preferably, the integrated circuit device further includes a clock generator and a power regulator electrically connected to the second transceiving module, wherein the ATE transmits a radio frequency signal via the first transceiving module, and the second transceiving module receives the radio frequency signal to drive the power regulator to generate power for the integrated circuit device to initiate the BIST circuit.
    Type: Application
    Filed: June 12, 2007
    Publication date: October 4, 2007
    Applicant: NATIONAL TSING HUA UNIVERSITY
    Inventors: Cheng-Wen Wu, Chih-Tsun Huang, Yu-Tsao Hsing
  • Publication number: 20070217360
    Abstract: A mobile station (300) for making access points enter protection modes includes a scanning module (310), a dummy module (320), and a dummy access point (330). The scanning module scans an access point (10) not entering a protection mode. The dummy module produces the dummy access point. The dummy access point includes a data producing module (331), an interval setting module (332), and a transmitting module (333). The data producing module produces a beacon frame for triggering the access point to enter a protection mode. The interval setting module sets a beacon interval. The transmitting module broadcasts the beacon frame during each beacon interval. A method for making access points enter protection modes is also provided.
    Type: Application
    Filed: November 3, 2006
    Publication date: September 20, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Cheng-Wen Tang
  • Patent number: 7271428
    Abstract: The invention provides a heterojunction bipolar transistor comprising a substrate having a collector therein, an intrinsic base region, a first extrinsic base region, a second extrinsic base region, an emitter on the intrinsic base layer and a spacer adjacent the emitter and on the first extrinsic base region. The first extrinsic base region is adjacent the intrinsic base region and the second extrinsic base region is adjacent the first extrinsic base region on the substrate, wherein a dopant concentration of the second extrinsic base region is higher than a dopant concentration of the first extrinsic base region.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: September 18, 2007
    Assignee: United Microelectronics Corp.
    Inventors: Cheng-Wen Fan, Hua-Chou Tseng
  • Publication number: 20070206751
    Abstract: A display system for showing incoming call messages is introduced. The display system includes a monitor, a telephone plug coupled to a telephone signal source, and a microprocessor for controlling the display to show an incoming call message when an incoming call signal is received from the telephone signal source. The display enables users to notice incoming calls without disturbances of ring tones.
    Type: Application
    Filed: February 13, 2007
    Publication date: September 6, 2007
    Inventor: Cheng-Wen Hsu
  • Publication number: 20070197190
    Abstract: An access point (100), for determining whether the access point and a plurality of other access points within the scope of the access point support the same pre-shared key (PSK), includes a dummy module (110) and a dummy mobile station (120). The dummy mobile station is produced by the dummy module, and includes an authentication submodule (121), an association submodule (122), and a handshake submodule (123). The authentication submodule authenticates the plurality of other access points. The association submodule associates with the plurality of other access points. The handshake submodule runs 4-way handshakes with the plurality of other access points, and determines whether any of the plurality of other access points and the access point support the same PSK. A method for identifying PSKs thereof is also provided.
    Type: Application
    Filed: November 3, 2006
    Publication date: August 23, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG
  • Publication number: 20070189245
    Abstract: A method for numbering a plurality of frames with sequence numbers is implemented in a wireless network device having a plurality of data units, and includes the steps of: providing receiver addresses of the data units; and numbering each data unit with a respective sequence number according to the receiver address of the data unit. A WLAN device employing the method is also disclosed for avoiding denial of service (DoS) attacks and man-in-the-middle attacks.
    Type: Application
    Filed: March 4, 2006
    Publication date: August 16, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG
  • Publication number: 20070153597
    Abstract: A built-in memory current test circuit to test a memory on a chip is disclosed, comprising a built-in self-test circuit and a dynamic current generation module. The built-in self-test circuit is disposed on the chip to receive and process a test signal and generate a control signal to control operation of the memory and a current control code. The dynamic current generation module, also disposed on the chip, produces a test current into the memory based on the current control code. The current switch time is reduced in the built-in memory current test circuit, and an integrated test combining functional and stress tests can thus be performed.
    Type: Application
    Filed: July 7, 2006
    Publication date: July 5, 2007
    Inventors: Yeong-Jar Chang, Kun-Lun Luo, Jung-Chi Ho, Cheng-Wen Wu, Chin-Jung Su
  • Publication number: 20070146199
    Abstract: A position data exchange system comprises first and second mobile communication devices. The first communication device retrieves current coordinates of itself from a Global Positioning System (GPS) receiver and transmits the coordinates through a wireless communication channel from which the second communication device receives the coordinates. The second communication device displays data concerning the current location of the first communication device according to the coordinates and further provides navigation.
    Type: Application
    Filed: December 28, 2005
    Publication date: June 28, 2007
    Inventors: Cheng-Wen Huang, Chuan-Yi Chang, Hung-Chih Yu
  • Publication number: 20070137773
    Abstract: A die bonding apparatus comprising a tape transfer device and a bonding device is provided. The tape transfer device includes a roller tape and a first roller axle. The roller tape comprises a plurality of glue layers and a first releasing film. Both surfaces of the glue layers are adhesive. The first releasing film covers one of the surfaces of the glue layers. The first roller axle is used for rolling up the first releasing film so as to rotate the roller tape. The bonding device is disposed at the front end of the tape transfer device. The bonding device includes at least a robotic arm and a controller. The controller controls the rotation and movement of the robotic arm.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Inventors: Yung-Fong Chen, Cheng-Wen Ou, In-Shieh Liu
  • Patent number: 7228468
    Abstract: The present invention provides a method and apparatus for a memory build-in self-diagnosis and repair with syndrome identification. It uses a fail-pattern identification and a syndrome-format structure to identify faulty rows, faulty columns and single faulty word in the memory during the testing process, then exports the syndrome information. Based on the syndrome information, a redundancy analysis algorithm is applied to allocate the spare memory elements repairing the faulty memory cells. It has a sequencer with enhanced fault syndrome identification, a build-in redundancy-analysis circuit with improved redundancy utilization, and an address reconfigurable circuit with reduced timing penalty during normal access. The invention reduces the occupation time and the required capture memory space in the automatic test equipment. It also increases the repair rate and reduces the required area overhead.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: June 5, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Cheng-Wen Wu, Rei-Fu Huang, Chin-Lung Su, Wen-Ching Wu, Yeong-Jar Chang, Kun-Lun Luo, Shen-Tien Lin
  • Publication number: 20070110093
    Abstract: A channel scanning device (100) for scanning channel status of a wireless local area network (WLAN) is provided. The channel scanning device includes a status recording module (120), a transmission module (130), and a probing module (140). The status recording module is used for setting up a channel status list including multiple sequence fields and status fields, the sequence fields representing a channel sequence, and one sequence field together with a status field corresponding to each channel. The probing module is used for pre-probing the channel according to the channel sequence, in order to find an idle channel, probing the idle channel, and recording the channel status into the channel status list set up by the status recording module. The transmission module is used for transmitting a pre-probe packet over the idle channel. A channel scanning method for scanning channel status of the WLAN is also disclosed.
    Type: Application
    Filed: June 24, 2006
    Publication date: May 17, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG
  • Publication number: 20070103599
    Abstract: A brightness-adjusting device for a screen is provided. The brightness-adjusting device includes a light source providing an incident light required to project an image on the screen, a sensor disposed at a position so as to receive the incident light and obtain a digital brightness signal accordingly, and a processor electrically connected to the sensor, receiving the signal and determining a target brightness for adjusting a brightness of the light source accordingly.
    Type: Application
    Filed: October 2, 2006
    Publication date: May 10, 2007
    Inventor: Cheng Wen-Chin
  • Publication number: 20070104137
    Abstract: A channel switch method is applied in a wireless communication system. The wireless communication system includes an access point and a plurality of mobile stations. The access point communicates with the plurality of mobile stations on a shared channel. The channel switch method includes transmitting a request frame from a first mobile station to the access point for a channel switch service; transmitting a channel switch frame from the access point to the first mobile station to switch the first mobile station from the shared channel to a new channel; and transmitting a beacon frame to the new channel and the shared channel.
    Type: Application
    Filed: September 15, 2006
    Publication date: May 10, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG
  • Publication number: 20070086369
    Abstract: A method for detecting attacks in a power save mode includes providing a mobile station and an access point; entering a power save mode by the mobile station; producing a dummy mobile station by the mobile station, and initiating the dummy mobile station to communicate with the access point; producing mock data and transmitting the mock data from the dummy mobile station to the mobile station via the access point; and determining whether the mock data is saved in the access point to detect whether there is an attack. A mobile station employing the method is also provided.
    Type: Application
    Filed: September 8, 2006
    Publication date: April 19, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG
  • Publication number: 20070076656
    Abstract: A method for transmitting information of a mobile station through a wireless local area network (WLAN) is provided. The WLAN includes a plurality of access points and a plurality of mobile stations, and is coupled to a management server. One mobile station communicates with one of the access points by management frames, and the access point communicates with the management server by packets. The method includes the steps of: adding an information element (IE) for storing information of the mobile station to a management frame by the mobile station; transmitting the management frame with the IE from the mobile station to the access point; adding content of the IE to a packet by the access point; and transmitting the packet from the access point to the management server.
    Type: Application
    Filed: April 10, 2006
    Publication date: April 5, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHENG-WEN TANG