Patents by Inventor Chan Nguyen

Chan Nguyen 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: 11977196
    Abstract: Systems and methods for automatically tracking multi-Z horizons within seismic volumes are provided. A surface from a plurality of surfaces identified at different depths for a multi-Z horizon within a seismic volume is selected. A seed point corresponding to the selected surface is determined. The selected surface is tracked over new data points through the seismic volume. Tracking each new data point involves comparing a depth of the new data point with depths associated with other surfaces and determining whether the depth of the new data point honors a geological boundary rule for maintaining a relative depth position of each of the plurality of surfaces within the multi-Z horizon, based on the comparison. When the depth of the new data point honors the rule, the selected surface is extended to include the new data point and, when it does not, the new data point is discarded.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: May 7, 2024
    Assignee: Landmark Graphics Corporation
    Inventors: Jocelyn Chan, Nam Xuan Nguyen, Kainan Wang, Xuewei Tan
  • Patent number: 11967983
    Abstract: Aspects described herein include devices and methods for smart ultra wideband transmissions. In one aspect, an apparatus includes pulse generation circuitry configured to output a plurality of transmission (TX) pulse samples at a selected signal sample rate, where each pulse sample of the plurality of TX pulse samples comprises a value associated with a pulse amplitude at a corresponding sample time The apparatus includes a plurality of power amplifier (PA) cells, with each PA cell of the plurality of PA cells comprising a corresponding current source and associated gates, and where the associated gates of a PA cell are selectable to configure an on state and an off state. Logic circuitry of the apparatus is configured to set the on state or the off state for each PA cell.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: April 23, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Yi Zeng, Cheng-Han Wang, Emanuele Lopelli, Chan Hong Park, Liang Zhao, Le Nguyen Luong, Koorosh Akhavan
  • Patent number: 11957804
    Abstract: High-energy optical disinfection systems inside a commercial airplane using highly efficient, flexible, and durable side-emitting optical fibers optically coupled to high-energy UV-C laser diodes to destroy submicroscopic infectious agents and inactivate microorganisms inside the airplane. With the high-energy UV-C laser diodes optically coupled to the side-emitting optical fibers, which can be easily routed to different areas inside the airplane, the high-energy UV-C laser light emitted from the side of the optical fiber will disinfect the airplane along a wide or long swath continuously without interruption.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: April 16, 2024
    Assignee: The Boeing Company
    Inventors: Eric Y. Chan, Dennis G. Koshinz, Kim Quan Anh Nguyen, Lyndon G. Mazon
  • Publication number: 20240106496
    Abstract: Aspects described herein include devices and methods for smart ultra wideband transmissions. In one aspect, an apparatus includes pulse generation circuitry configured to output a plurality of transmission (TX) pulse samples at a selected signal sample rate, where each pulse sample of the plurality of TX pulse samples comprises a value associated with a pulse amplitude at a corresponding sample time The apparatus includes a plurality of power amplifier (PA) cells, with each PA cell of the plurality of PA cells comprising a corresponding current source and associated gates, and where the associated gates of a PA cell are selectable to configure an on state and an off state. Logic circuitry of the apparatus is configured to set the on state or the off state for each PA cell.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 28, 2024
    Inventors: Yi ZENG, Cheng-Han WANG, Emanuele LOPELLI, Chan Hong PARK, Liang ZHAO, Le Nguyen LUONG, Koorosh AKHAVAN
  • Publication number: 20240087215
    Abstract: A system for generating an advanced surround view for a vehicle includes a plurality of cameras to generate image data. Sensors are configured to determine kinematic data of the vehicle. Kinematic data are also obtained by a visual odometry module and/or a deep-vision mechanism. A processor is configured to process image data captured by the plurality of cameras to generate a 360-degree surround view layer representative of a surrounding area. The processor is further configured to construct an improved bicycle kinematic model for processing kinematic data to generate an under-chassis layer representative of an area under the vehicle. The processor is further configured to generate a 3D vehicle model layer and overlay objects layer. Display screens display a GUI of combined scene of the 360-degree surround view layer, under-chassis layer, 3D vehicle model layer and overlay objects layer as would be viewed from a virtual camera viewpoint.
    Type: Application
    Filed: October 26, 2023
    Publication date: March 14, 2024
    Inventors: Dai Thanh PHAN, Phuc Thien NGUYEN, Chi Thanh NGUYEN, Duc Chan VU, Truong Trung Tin NGUYEN, Dang Quang NGUYEN, Hai Hung BUI
  • Patent number: 6280015
    Abstract: A service station for use in servicing one or more inkjet print cartridges includes a service station sled assembly movably attached to a service station chassis. The sled assembly includes at least one wiper and at least one cap. In one embodiment, the service station includes a cam and cam follower that interact to move the sled assembly. The cam is shaped so that movement of the cam to a first position causes each cap to contact a printhead of a corresponding inkjet print cartridge. Movement of the cam to a second position causes the cap to move away from the printhead and moves the wiper into a wiping position. In another embodiment, a service station according to the invention for use with a facsimile machine including inkjet printing apparatus includes a motor that is positioned so as to minimize the footprint of the service station.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: August 28, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Chan Nguyen, Alan Shibata, Atsushi Kobayashi, Noriyoshi Fujimori
  • Patent number: 5997126
    Abstract: A service station for use in servicing one or more inkjet print cartridges includes a service station sled assembly detachably attached to a service station chassis. The service station according to the invention can be used with either a facsimile machine that uses thermal inkjet printing, or with a thermal inkjet printer. In one embodiment, a mechanism for detaching the sled assembly is easily activated by a lever extending from the service station chassis. The invention enables a user to easily detach the sled assembly from and attach the sled assembly to the remainder of the service station, thereby allowing the user to easily replace the sled assembly without necessity to replace the remainder of the service station.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: December 7, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Chan Nguyen, Alan Shibata, Atsushi Kobayashi, Noriyoshi Fujimori
  • Patent number: 5992967
    Abstract: A service station for use in servicing one or more inkjet print cartridges includes a service station sled assembly movably attached to a service station chassis. The sled assembly includes at least one wiper and at least one cap. In one embodiment, the service station includes a cam and cam follower that interact to move the sled assembly. The cam is shaped so that movement of the cam to a first position causes each cap to contact a printhead of a corresponding inkjet print cartridge. Movement of the cam to a second position causes the cap to move away from the printhead and moves the wiper into a wiping position. In another embodiment, a service station according to the invention for use with a facsimile machine including inkjet printing apparatus includes a motor that is positioned so as to minimize the footprint of the service station.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: November 30, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Chan Nguyen, Alan Shibata, Atsushi Kobayashi, Noriyoshi Fujimori
  • Patent number: 5812157
    Abstract: A service station for use in servicing one or more inkjet print cartridges includes a service station sled assembly movably attached to a service station chassis. The service station can be used with either a facsimile machine that uses thermal inkjet printing, or with a thermal inkjet printer. In one embodiment, the service station includes an alignment mechanism for aligning a print carriage with respect to the sled assembly during capping to achieve improved alignment, relative to previous service stations, of a cap with respect to a corresponding print cartridge printhead. In another embodiment, the service station includes a positioning mechanism for positioning the print carriage with respect to the sled assembly during wiping such that, viewed in a direction parallel to the direction of motion of the print carriage, the edge of a wiper distal from a sled base extends beyond the print cartridge printhead by a predetermined amount in order to achieve optimum wiping performance.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: September 22, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Chan Nguyen, Alan Shibata, Atsushi Kobayashi, Noriyoshi Fujimori
  • Patent number: 5774142
    Abstract: An apparatus and method are provided to prevent the overflow of waste ink from a primary spittoon used in a service station of a thermal ink-jet device, such as a facsimile machine. An opening is defined in a wall of the primary spittoon such that when the waste ink level within the primary spittoon reaches the opening, the waste ink issues from the opening for collection by a secondary spittoon. A passageway may be employed to route the ink from the opening to the secondary spittoon, with the passageway preferably represented by a rib formed externally on the primary spittoon wall. By employing the method of the present invention, one avoids the potential contamination of the internal workings of the thermal ink-jet device caused by the unchecked overflow of ink from the primary spittoon.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: June 30, 1998
    Assignee: Hewlett-Packard Company
    Inventors: Chan Nguyen, Alan Shibata
  • Patent number: 5719603
    Abstract: Wetting an absorber material in the bottom of a spittoon in a service station employed in a thermal ink-jet device, such as a facsimile machine, prevents formation of stalagmites of ink and ensures trouble-free operation of the service station. The absorber, which comprises a material having a high capacity for absorbing the liquid ink, is wetted with a sufficient quantity of a liquid having both a low vapor pressure and capable of wetting the absorber material. Such a liquid comprises a hydrocarbon material, such as a paraffin oil.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: February 17, 1998
    Assignee: Hewlett-Packard Company
    Inventor: Chan Nguyen
  • Patent number: 5638099
    Abstract: A service station for use in servicing one or more inkjet print cartridges includes a service station sled assembly detachably attached to a service station chassis. The service station according to the invention can be used with either a facsimile machine that uses thermal inkjet printing, or with a thermal inkjet printer. In one embodiment, a mechanism for detaching the sled assembly is easily activated by a lever extending from the service station chassis. The invention enables a user to easily detach the sled assembly from and attach the sled assembly to the remainder of the service station, thereby allowing the user to easily replace the sled assembly without necessity to replace the remainder of the service station.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: June 10, 1997
    Assignee: Hewlett-Packard Company
    Inventors: Chan Nguyen, Alan Shibata, Atsushi Kobayashi, Noriyoshi Fujimori
  • Patent number: 5559538
    Abstract: Structure according to the invention simultaneously controls operation of a sled assembly for servicing of an inkjet print cartridge and a mechanism for controlling advancement of a print medium into a printing path. The structure according to the invention can be used with either a facsimile machine that uses thermal inkjet printing, or with a thermal inkjet printer. In one embodiment, the structure includes a sled assembly which further includes at least one wiper and at least one cap, a paper pick pressure plate, and a mechanism for simultaneously controlling movement of the sled assembly and the pressure plate. The paper pick pressure plate is controlled to selectively contact a paper pick roller such that the print medium is advanced through the printing path when the pressure plate contacts the pick roller and the print medium is not advanced through the printing path when the pressure plate does not contact the pick roller.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: September 24, 1996
    Assignee: Hewlett-Packard Company
    Inventors: Chan Nguyen, Alan Shibata, Atsushi Kobayashi, Noriyoshi Fujimori
  • Patent number: 5517221
    Abstract: Wetting an absorber material in the bottom of a spittoon in a service station employed in a thermal ink-jet device, such as a facsimile machine, prevents formation of stalagmites of ink and ensures trouble-free operation of the service station. The absorber, which comprises a material having a high capacity for absorbing the liquid ink, is wetted with a sufficient quantity of a liquid having both a low vapor pressure and capable of wetting the absorber material. Such a liquid comprises a hydrocarbon material, such as a paraffin oil.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: May 14, 1996
    Assignee: Hewlett-Packard Company
    Inventor: Chan Nguyen