Patents by Inventor Sam Tsai

Sam Tsai 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: 9805331
    Abstract: A method of tracking an inventory of objects via a mobile communications device includes acquiring an image of one or more of the objects via the mobile communications device, which also collects a location of the mobile communications device while acquiring the image of the one or more of the objects. The location and image are transferred from the mobile communications device to a remote server via a wireless network, such that the one or more of the objects are identified at the server based on the image, and the location and identity of the one or more objects are stored on a database associated with the server.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: October 31, 2017
    Assignees: DEUTSCHE TELEKOM AG, THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Cheng-Hsin Hsu, Kyu-Han Kim, Jatinder Pal Singh, David M. Chen, Sam Tsai, Bernd Girod
  • Patent number: 8971146
    Abstract: In one embodiment, a memory includes a plurality of bit lines and a write driver for driving a driven bit line selected from the plurality of bit lines during a write operation. The write driver is coupled to an internal node. A first stage clamping circuit is operable to clamp the internal node to a clamping voltage if the write operation is not enabled and is further operable to unclamp the internal node during the write operation. The memory further includes a multiplexer for selectively coupling the driven bit line to the internal node. A second stage clamping circuit is operable to clamp the plurality of bit lines to a clamping voltage if the write operation is not enabled and is further operable to unclamp the driven bit line during the write operation.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: March 3, 2015
    Assignee: Lattice Semiconductor Corporation
    Inventors: Brad Sharpe-Geisler, Timothy Scott Swensen, Sam Tsai, Fabiano Fontana
  • Publication number: 20130258761
    Abstract: In one embodiment, a memory includes a plurality of bit lines and a write driver for driving a driven bit line selected from the plurality of bit lines during a write operation. The write driver is coupled to an internal node. A first stage clamping circuit is operable to clamp the internal node to a clamping voltage if the write operation is not enabled and is further operable to unclamp the internal node during the write operation. The memory further includes a multiplexer for selectively coupling the driven bit line to the internal node. A second stage clamping circuit is operable to clamp the plurality of bit lines to a clamping voltage if the write operation is not enabled and is further operable to unclamp the driven bit line during the write operation.
    Type: Application
    Filed: May 24, 2013
    Publication date: October 3, 2013
    Applicant: Lattice Semiconductor Corporation
    Inventors: Brad Sharpe-Geisler, Timothy Scott Swensen, Sam Tsai, Fabiano Fontana
  • Patent number: 8451679
    Abstract: In one embodiment, a memory is provided that includes: a write driver for selectively driving a driven pair of bit lines selected from a plurality of bit line pairs during a write operation; a first stage clamping circuit operable to clamp a pair of internal nodes to a clamping voltage, wherein the first stage clamping circuit is further operable to unclamp the pair of internal nodes during the write operation; a bit line multiplexer for selectively coupling the driven bit line pair to the pair of internal nodes; and a second stage clamping circuit operable to clamp the plurality of bit line pairs to the clamping voltage, wherein the second stage clamping circuit is further operable to unclamp the driven bit line pair during the write operation.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: May 28, 2013
    Assignee: Lattice Semiconductor Corporation
    Inventors: Brad Sharpe-Geisler, Timothy Scott Swensen, Sam Tsai, Fabiano Fontana
  • Publication number: 20120202515
    Abstract: A method of tracking an inventory of objects via a mobile communications device includes acquiring an image of one or more of the objects via the mobile communications device, which also collects a location of the mobile communications device while acquiring the image of the one or more of the objects. The location and image are transferred from the mobile communications device to a remote server via a wireless network, such that the one or more of the objects are identified at the server based on the image, and the location and identity of the one or more objects are stored on a database associated with the server.
    Type: Application
    Filed: February 9, 2011
    Publication date: August 9, 2012
    Applicants: STANFORD UNIVERSITY, DEUTSCHE TELEKOM AG
    Inventors: Cheng-Hsin Hsu, Kyu-Han Kim, Jatinder Pal Singh, David M. Chen, Sam Tsai, Bernd Girod
  • Patent number: 8171592
    Abstract: The present invention relates to a steam cleaner that is light-weight and is prepared for operation quickly and easily and comprises handle assembly, a pivoting connector, a reservoir, a reservoir socket, a steam head and an electric wire. The handle assembly comprises a grip and a lever. The pole connector is attached to the steam head. The reservoir is mounted detachably in the reservoir socket and is easily removed to fill the reservoir with tap water. Squeezing the handle assembly releases water from the reservoir into the steam head where steam is generated to clean a floor.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: May 8, 2012
    Inventor: Sam Tsai
  • Patent number: 7695153
    Abstract: The present invention is an umbrella light with an audio module, including a hosing, at least two fastener, at least two turned lights, an audio module and a control module. The fastener provides a better gripper structure with a torsional spring, and the audio module can be arranged with external audio source, which provides people with wonderful melody.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: April 13, 2010
    Inventor: Sam Tsai
  • Patent number: 7697611
    Abstract: A method for processing video image is provided to perform a motion vector filtering process on the image after being processed by a motion estimation process. The motion vector filtering process adjusts the motion vectors derived for each block in a video sequence, so that the motion vector of each block and the actual moving direction of the corresponding object in the image tend to conformity. Then, the blocks with similar motion vectors are merged and blocks with radical motion vectors are corrected, thereby reducing distortion of the output image and the number of bits used to represent the motion information, which in turns increases the efficiency of compression process.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: April 13, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Yang Tsai, S. Sam Tsai, Hsueh-Maing Hang, Ti-Hao Chiang, Guo-Zua Wu
  • Publication number: 20100050367
    Abstract: The present invention relates to a steam cleaner that is light-weight and is prepared for operation quickly and easily and comprises handle assembly, a pivoting connector, a reservoir, a reservoir socket, a steam head and an electric wire. The handle assembly comprises a grip and a lever. The pivoting connector is attached to the steam head. The reservoir is mounted detachably in the pivoting connector and is easily removed to fill the reservoir with tap water. Squeezing the handle assembly releases water from the reservoir into the steam head where steam is generated to clean a floor.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 4, 2010
    Inventor: Sam TSAI
  • Publication number: 20090196020
    Abstract: The present invention is an umbrella light with an audio module, including a hosing, at least two fastener, at least two turned lights, an audio module and a control module. The fastener provides a better gripper structure with a torsional spring, and the audio module can be arranged with external audio source, which provides people with wonderful melody.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Inventor: Sam TSAI
  • Publication number: 20090183333
    Abstract: A vacuum dust collector comprising a housing including a concaved space inside and a control knob on the top; an suction generator placed under the concaved space; a bottom cover, covered at the bottom of the housing, including a dust inlet and at least one sensor; and a dust container, disposed in the concaved space, including a cover, a chamber, a filter, an outlet pipe, an inlet pipe, and a latch. Moreover, the shape of the housing is corresponding to the place where it is located, and the latch is pressed by the filter disposed on the outlet pipe of dust container to allow the cover to be eclipsed on the chamber.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 23, 2009
    Inventor: Sam TSAI
  • Patent number: 7539076
    Abstract: Systems and methods disclosed herein provide for variable data width memory. For example, in accordance with an embodiment of the present invention, a technique for doubling a width of a memory is disclosed, without having to increase a width of the internal data path or the number of input/output pads.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: May 26, 2009
    Assignee: Lattice Semiconductor Corporation
    Inventors: Hemanshu Vernenker, Margaret Tait, Christopher Hume, Nhon Nguyen, Allen White, Tim Swensen, Sam Tsai, Steve Eplett
  • Publication number: 20080158863
    Abstract: The electrical candle with micro-control means comprising a main body and a base body. The main body includes a shell and a circuit module, and the shell including a flame-shaped cover member and a plurality of holes. The circuit module, inside the shell, includes an illuminant and a micro switch. The base body includes a hollow to contain the main body. The characteristic is that the electrical candle turned on and off by an external force which actuates the micro switch to control power supply. The external force could be airflow-control, voice-control and vibrating so that it is easy for users to utilize the electrical candle. Therefore, the present invention provides a new and improved electrical candle for people to use with more convenience.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Inventor: Sam Tsai
  • Patent number: 7307912
    Abstract: Systems and methods disclosed herein provide for variable data width memory. For example, in accordance with an embodiment of the present invention, a technique for doubling a width of a memory is disclosed, without having to increase a width of the internal data path or the number of input/output pads.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: December 11, 2007
    Assignee: Lattice Semiconductor Corporation
    Inventors: Hemanshu T. Vernenker, Margaret C. Tait, Christopher Hume, Nhon Nguyen, Allen White, Tim Swensen, Sam Tsai, Steve Eplett
  • Patent number: 7266292
    Abstract: A structure of steam swab comprises a rod assemblage and a base assemblage. The rod assemblage comprises a handle, a first sleeve, a second sleeve, a third sleeve, and a water tank. With a fastener set at the end, the handle and the two ends of each of the first, the second, and the third sleeves can be easily assembled to the rod assemblage. The second sleeve comprises a tank fastener base and a tank fastener ring to fasten the water tank. The base assemblage comprises a triangular lid, a steam chamber body, and a base. The triangular lid comprises a pivot connector, which can pivotally connect to the rod assemblage. An appropriate concave is set in each angle of the triangular lid to fix with a spring and a clamp. The steam chamber body and a power control unit are set in the base, and the triangular lid covers on the base to assemble the base assemblage. The base assemblage connects to the rod assemblage via the pivot connector to assemble the steam swab.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: September 4, 2007
    Inventor: Sam Tsai
  • Publication number: 20070074358
    Abstract: A motorized broom includes a handle, a universal connector, and a cleaning portion. The universal connector is used for connecting the handle and the cleaning portion. Thus, the universal connector together with the handle is rotatable relative to the cleaning portion universally, so that the cleaning portion is angle adjustable so as to clean the corner of the house exactly. In addition, the dust collector is removably mounted on the main base, so that the dust collector can be removed from the main base easily and rapidly, thereby facilitating a user removing the dust collector.
    Type: Application
    Filed: October 4, 2005
    Publication date: April 5, 2007
    Inventor: Sam Tsai
  • Patent number: 7149129
    Abstract: Systems and methods provide output data from a memory. For example, in accordance with an embodiment of the present invention, techniques are disclosed for providing glitch-free output data from a memory through feedback of the output data signal.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: December 12, 2006
    Assignee: Lattice Semiconductor Corporation
    Inventors: Hemanshu T. Vernenker, Margaret C. Tait, Christopher Hume, Allen White, Tim Swensen, Sam Tsai, Steve Eplett
  • Publication number: 20060241534
    Abstract: The present invention relates to an electric thermal waist belt, which comprises a plurality of layers of belt sheaths made of a polyvinyl chloride (PVC), at least two lining pads made of a flameproof polyurethane (PU) foam, a fastener, a power switch, and an electrothermal layer comprising a circuit of heating wire and at least two multi-apertured surfaces, wherein the circuit of heating wire is placed in between the two multi-apertured surfaces forming a double layers structure and connect to the power switch, a inner part of on of the lining pad comprises a foil, the other lining pad comprises a plurality of side pads. The lining pads cover the electrothermal layer and are placed in between the belt sheaths, sewing the belt sheaths produces an electric thermal waist belt performing a proper temperature between 35˜60° C. for health.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 26, 2006
    Inventor: Sam Tsai
  • Publication number: 20060087897
    Abstract: Systems and methods provide output data from a memory. For example, in accordance with an embodiment of the present invention, techniques are disclosed for providing glitch-free output data from a memory through feedback of the output data signal.
    Type: Application
    Filed: October 25, 2004
    Publication date: April 27, 2006
    Inventors: Hemanshu Vernenker, Margaret Tait, Christopher Hume, Allen White, Tim Swensen, Sam Tsai, Steve Eplett
  • Patent number: D574990
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: August 12, 2008
    Inventor: Sam Tsai