Patents by Inventor Kang Liu

Kang Liu 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).

  • Patent number: 7341265
    Abstract: A frame structure for foldable baby trailer is disclosed to include a bottom frame formed of two side bars and a front bar and a rear bar, two vertical side frames each having two bottom frame bars respectively pivoted to the side bars and an arched top frame bar pivoted to the bottom frame bars, a transverse top bar detachably connected to the arched top frame bars of the two vertical side frames, a trailer bar pivoted to the front side of said side bar of the bottom frame and selectively locked between an extended position and a received position, and a bumper detachably connected between the side bars of the bottom frame.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: March 11, 2008
    Inventor: Cheh-Kang Liu
  • Publication number: 20080007810
    Abstract: An optical scanning module includes a housing, four reflectors and a lens module. The housing has a right section and a left section. The four reflectors are positioned at the right section of the housing. The lens module is positioned at the left section. The arrangement of the lens module and the four reflectors allows more space to be saved so that a smaller and thinner scanner can be produced.
    Type: Application
    Filed: March 22, 2006
    Publication date: January 10, 2008
    Inventor: Ho-Kang Liu
  • Patent number: 7295571
    Abstract: An improved type of application-specific integrated circuit block (ASIC) is disclosed that is optimized for use in a communications system, and is somewhat programmble through the use of particular data objects that can specify an instruction and operand for the ASIC. The ASIC can be multi-tasking to perform multiple receive or transmit operations, two different kinds of transmit or receive operations, and operaions for mulitple ports. The ASIC generally uses an input data decoder block for decoding an input data object; a computation logic block for performing application specific computations in connection with the input data object, and an output data encoder block for encoding an output data object based on the specific computations. Using a common memory, a set of such ASICs can be arranged in a form of logical (or logical hybrid) pipeline.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: November 13, 2007
    Assignee: Realtek Semiconductor Corp.
    Inventor: Ming-Kang Liu
  • Patent number: 7286668
    Abstract: This invention discloses a method of protecting copyright of a digital video work by using a digital password technology and a digital watermark technology to prevent the unauthorized use of a digital video work. Such method adds password protection of two chrominance arrays of such video work in advance, so that when such video work is published on the Internet, it can only be played in color by a specified player. As long as a user enters the correct password into the specified player, a full color visual effect of such video work can be obtained. If other players are used to play such video work, only a partial gray-scale visual effect can be obtained. Users must request or buy a specific player and a password from the distributor of such video work to play the complete information to prevent piracy.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: October 23, 2007
    Assignee: Inventec Appliances Corp.
    Inventors: Tai Shui Ho, Shih Kuang Tsai, Jian Feng Tu, Yong Kang Liu, Yan Jin
  • Patent number: 7265422
    Abstract: Techniques for ESD protection are provided. An ESD protection device includes a first well region and a second well region disposed in a semiconductor substrate, with an isolation region therebetween. N+ implant regions are disposed in the second well region and are coupled in common at a first node. NLDD regions are disposed between the N+ implant regions, and pocket implants underlie each of the NLDD regions. Current discharge paths are defined by corresponding NLDD regions and pocket implants when a voltage of the first node exceeds a breakdown voltage. In a specific embodiment, the breakdown voltage is less than a breakdown voltage for a logic gate oxide.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: September 4, 2007
    Assignee: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Talee Yu, Chi Kang Liu
  • Publication number: 20070186257
    Abstract: The present invention discloses a set top box for playing Web TV. The set top box includes a control unit, a network transmission interface, a data transmission interface, and a first interface. The set top box can be connected to a multimedia player through the first interface, such that a multimedia processing unit of the multimedia player can control the control unit and the multimedia processing unit to decode audio/video signals transmitted from the network transmission interface and the data transmitter, and output images and sounds. Therefore, through the multimedia processing unit of the multimedia player, the set top box is able to play Web TV. The invention also discloses a multimedia player, a system capable of playing Web TV, and a method of integrating the set top box and multimedia player for playing Web TV.
    Type: Application
    Filed: January 31, 2007
    Publication date: August 9, 2007
    Applicant: Inventec Appliances Corp.
    Inventors: Cheng-Shing Lai, Zheng-Rong Zou, Yong-Kang Liu
  • Patent number: 7200138
    Abstract: A physical medium dependent (PMD) transport subsystem is disclosed which is used in an xDSL communication system. The PMD subsystem coordinates movement of data from an analog front end to a logical pipeline based TC layer, and exchanges common data objects with the latter to increase flexibility of the system. The PMD subsystem includes a number of ASIC blocks for performing signal processing operations, and these ASIC blocks are also shared between ports and are multi-tasking to reduce hardware costs.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: April 3, 2007
    Assignee: Realtek Semiconductor Corporation
    Inventor: Ming-Kang Liu
  • Publication number: 20060203843
    Abstract: An improved type of application-specific integrated circuit block (ASIC) is disclosed that is optimized for use in a communications system, and is somewhat programmble through the use of particular data objects that can specify an instruction and operand for the ASIC. The ASIC can be multi-tasking to perform multiple receive or transmit operations, two different kinds of transmit or receive operations, and operaions for mulitple ports. The ASIC generally uses an input data decoder block for decoding an input data object; a computation logic block for performing application specific computations in connection with the input data object, and an output data encoder block for encoding an output data object based on the specific computations. Using a common memory, a set of such ASICs can be arranged in a form of logical (or logical hybrid) pipeline.
    Type: Application
    Filed: January 12, 2006
    Publication date: September 14, 2006
    Inventor: Ming-Kang Liu
  • Patent number: 7098890
    Abstract: The present invention discloses an input equipment with a sensed movement feedback, which comprises a pressure sensor pad having a through hole at the center, a rolling ball disposed in the through hole with part of the rolling ball exposed and protruded therefrom, and at least one driver contacting with the surface of the rolling ball. The sensor pad will produce a signal according to a pressing force exerting thereon and transmit the signal to a control circuit of the input equipment, enabling the control circuit to produce a rolling signal for activating the driver to move the rolling ball in a direction proportion to the pressing force. Thus, the user can sense the direction and speed of the cursor movement on the screen from sensing the rolling movement of the rolling ball.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: August 29, 2006
    Assignee: Inventec Appliances Corp.
    Inventors: Tai Shui Ho, Shih Kuang Tsai, Yong Kang Liu, Yan Jin, Xin Ke Shi
  • Patent number: 7085285
    Abstract: A communications system including a shared signal circuit for performing a set of signal processing operations on both receive data and transmit data. The signal processing circuit is also shared by a plurality of communication ports. To further enhance operation of the system, the computing resources include a set of independent application specific (ASIC) logic circuits, with at least some of the ASICs selectively performing at least one of a first signal processing operation and a second signal processing operation on data in response to control information embedded in an input data object.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: August 1, 2006
    Assignee: Realtek Semiconductor Corp.
    Inventor: Ming-Kang Liu
  • Patent number: 7075941
    Abstract: A multi-port communications system is described, which includes hardware based subsystems for performing both physical medium dependent operations and transport convergence operations on a data transmission. A software based subsystem performs other operations as needed. Both types of subsystems are shareable by the communications ports so as to reduce a total hardware requirement of a communications system. In addition, processing blocks within both subsystems are adapted to be multi-tasking, in that they can perform multiple operations for a receive/transmit task, or even a mixture of receive/transmit tasks. The subsystems are arrangeable in a logical/hybrid pipeline arrangement with a common memory to further maximize the flexibilty and configurability of a communications system.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: July 11, 2006
    Assignee: Real Communications, Inc.
    Inventor: Ming-Kang Liu
  • Patent number: 7072331
    Abstract: A system that can be dynamically configured to achieve an optimal routing path for an end-to-end data link connection is disclosed. An optimal data path can be determined by a digital subscriber loop (DSL) user based on particular bandwidth requirements, data rate cost constraints, and/or data delay requirements. The data path can be set up to include one or more data routes, including the regular digital public switching telephone network (PSTN), a wide area networks (WAN), or virtual permanent circuit links via digital cross-connects (DCS).
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: July 4, 2006
    Assignee: Real Communications, Inc.
    Inventors: Ming-Kang Liu, Steve Chen, Victor Lee, Young Way Liu, Wen Chi Chen
  • Publication number: 20060090002
    Abstract: A task scheduler for a TC subsystem is disclosed. The task scheduler is responsible for responding to computation block requests from the TC subsystem, and retrieving/storing data objects for such computation blocks. The task scheduler thus facilitates a type of logical pipeline by exchanging such data objects with a common TC memory used by each computation block. The task scheduler generally includes a queue, a state machine and a bus master for satisfying the data object requests.
    Type: Application
    Filed: December 12, 2005
    Publication date: April 27, 2006
    Inventor: Ming-Kang Liu
  • Patent number: 7032223
    Abstract: A transport convergence (TC) subsystem for use as a form of logical pipeline processor is disclosed. The TC subsystem includes a number of ASIC computing blocks interconnected through a local bus for transferring data objects used as a form of common data I/O for each ASIC. The data object includes both control and data portions. A TC scheduling circuit coordinates transfer of data objecst to and from a TC data object memory that is local or external. The TC data object memory is shared in common with all the ASIC blocks so that computation results from each ASIC TC signal processing circuit can be passed between other ASICs to form a logical pipeline. The data objects output from the TC subsystem are used by other processing subsystems in an xDSL communications system, including a software based ATM TC subsystem, and a physical medium dependent subsystem. In addition, the architecture of the TC subsystem is configured so that it can be shared by multiple ports in an xDSL system.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: April 18, 2006
    Assignee: Realtek Semiconductor Corp.
    Inventor: Ming-Kang Liu
  • Patent number: 6988188
    Abstract: A structure for a data object is disclosed with a field and format structure optimized for use by a set of pipeline stages that are interconnected logically through a common pipeline memory. The data object includes both a first portion containing data relating to one or more of a plurality of parameters associated with the control and/or the configuration of one or more processing circuitry blocks, and a second portion containing data associated with computations performed by the processing circuitry blocks. Other portions contain both general and specific types of operational control information used by the processing circuitry blocks. The data object acts as a form of common data exchange mechanism between disparate types of pipeline stages, including in hybrid (mixed) software-hardware pipelines. The control data in the data object can be used by a first pipeline stage to affect or adaptively change operational functioning of downstream pipeline stages.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: January 17, 2006
    Assignee: Realtek Semiconductor Corp.
    Inventor: Ming-Kang Liu
  • Patent number: 6986073
    Abstract: A communications system operates with an internal pipeline clock rate that is higher than that of any port used in the system. In an xDSL environment, this rate is higher than a DMT symbol rate used in the channel. In this manner, communications for the various ports can be synchronized and pipelined for transmit/receive operations. In addition, the higher rate results in idle processing periods, during which stuffing symbols are generate to maintain synchronism and/or pass along control information. The internal pipeline clock rate is selected to be higher than rate that may be encountered as well during an initialization routine and normal transmissions. The pipeline clock is also programmable so as to permit power management of the system.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: January 10, 2006
    Assignee: Realtek Semiconductor Corp.
    Inventor: Ming-Kang Liu
  • Patent number: 6965960
    Abstract: A logical pipeline or logical hybrid pipeline is used for an xDSL communication system, and particularly for processing DMT symbols. This flexible arrangement permits easy and efficient sequencing of DMT symbols for transmit/receive tasks, and for multiple ports, since the pipeline resources can be shared or allocated as needed to support a particular data transmission. Each stage in the pipelines works on input data objects, and creates output data objects in the same format for use by other stages. The data objects are based on DMT symbols, so this facilitates intelligent control and sequencing of a DMT data transmission. The combination of the pipeline and the tailored data objects permits an implementation of a customized xDSL symbol processor.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: November 15, 2005
    Assignee: RealTek Semiconductor Corporation
    Inventor: Ming-Kang Liu
  • Publication number: 20050185742
    Abstract: A data communication device with a receiver for receiving and processing incoming signal having intersymbol interference component to produce resultant signals with less interference. The processor includes a timing recovery processor for recovering a clock signal from the sample streams of the incoming signal. The recovered clock signal is also suitable for signal detection of the incoming signals under strong intersymbol interference.
    Type: Application
    Filed: October 9, 2004
    Publication date: August 25, 2005
    Inventor: Ming-Kang Liu
  • Patent number: 6904083
    Abstract: A digital communications link, protocol and related circuits are provided which use an embedded control channel for transferring control information between different sections of an xDSL system, including within a personal computer. The control channel is included as part of a data frame structure that is suited for a multi-channel communication system, including in an xDSL communications environment.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: June 7, 2005
    Assignee: PCTEL, Inc.
    Inventors: Whu-Ming Young, Ming-Kang Liu
  • Publication number: 20050080932
    Abstract: A facsimile machine with multi-port networking capabilities and a compact flash card for data storage, which does not have printing components, but uses a computer and printer for printing.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 14, 2005
    Inventor: Pao-Kang Liu