Patents by Inventor Po-Ching Lu

Po-Ching Lu 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: 10962868
    Abstract: A projection device is disclosed. The projection device includes an air inlet, an air outlet, an optical engine, a heat sink, a fan and a combiner. A first passage is arranged between the air inlet and the air outlet for passing an air flow. The optical engine includes a light source and an imaging lens set outputting a projection light beam. The heat sink is connected to the optical engine, and a part of the heat sink is arranged in the first passage. The fan is arranged in the first passage. The combiner receives the projection light beam. The projection light beam moves in a propagating direction opposite to the entry direction.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 30, 2021
    Assignee: Young Optics Inc.
    Inventors: S-Wei Chen, Po-Ching Lu
  • Publication number: 20190233968
    Abstract: A gas injector for a chemical vapor deposition (CVD) system is provided with one or more gas distributing layers. Each gas distributing layer comprises a central portion, a plurality of stream guides, and a plurality of gas channels. A gas distributer is placed within the central portion. Each stream guide has a first end, a middle portion, and a second end, where the middle portion is arranged between the first end and the second end, the first end is arranged near the central portion, and the second end is arranged near the peripheral of the gas distributing layer. Each gas channel is formed and interposed between two of the plurality of stream guides and allows transportation of gas. The width of each stream guide is gradually increased from the first end to the middle portion and is gradually decreased from the middle portion to the second end.
    Type: Application
    Filed: January 22, 2019
    Publication date: August 1, 2019
    Inventors: Po-Ching Lu, Kuan-Ning Huang
  • Publication number: 20190032244
    Abstract: In accordance with an embodiment, a chemical vapor deposition system is provided with a susceptor, a plurality of wafer holders, and a processing gas. The susceptor carries the plurality of wafer holders with each bearing a wafer. The susceptor makes revolution around a central axis. The periphery of the wafer includes a chamfer, and each wafer holder includes a protrudent structure having a horizontal bottom surface and an inclined bearing surface to bear the chamfer of the wafer. The processing gas approaches a surface of the wafer and is heated to form a thin film to be deposited on the surface.
    Type: Application
    Filed: July 19, 2018
    Publication date: January 31, 2019
    Inventors: Po-Ching Lu, Kuan-Ning Huang
  • Publication number: 20180246399
    Abstract: A projection device is disclosed. The projection device includes an air inlet, an air outlet, an optical engine, a heat sink, a fan and a combiner. A first passage is arranged between the air inlet and the air outlet for passing an air flow. The optical engine includes a light source and an imaging lens set outputting a projection light beam. The heat sink is connected to the optical engine, and a part of the heat sink is arranged in the first passage. The fan is arranged in the first passage. The combiner receives the projection light beam. The projection light beam moves in a propagating direction opposite to the entry direction.
    Type: Application
    Filed: February 22, 2018
    Publication date: August 30, 2018
    Inventors: S-WEI CHEN, PO-CHING LU
  • Patent number: 9182920
    Abstract: A channel activating method and a peripheral device are provided for activating a serial transmission channel to retrieve at least one firmware instruction from a host. The peripheral device includes a serial transmission port coupled to the host, a microprocessor coupled to the serial transmission port for performing functions of the peripheral device according to the firmware instruction, a memory for holding the firmware instruction, a trigger generator for generating a trigger signal by monitoring a control signal received from the host via the serial transmission port, and a signal generator, coupled to the trigger generator, for generating an indication signal to the host via the serial transmission port according to the trigger signal to activate the serial transmission channel.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: November 10, 2015
    Assignee: MEDIATEK INC.
    Inventors: Po-Ching Lu, Pao-Ching Tseng, Chuan Liu
  • Publication number: 20150096496
    Abstract: A film-deposition apparatus simultaneously realizes high partial pressure of volatile components, great flow velocity and smooth deposition rate curve at lower gas consumption. The apparatus comprises a disk-like susceptor, a face member opposing the susceptor, an injector, a material gas introduction portion, and a gas exhaust portion. A wafer holder retains a substrate, and a supporting member of the susceptor retains the wafer holder. The susceptor revolves around its central axis and the substrate rotates by itself. The opposing face member is structured so that a fan-shaped recessed portion and a fan-shaped raised portion are formed alternately in a radial manner, by which the height of the flow channel changes in a circumferential direction. The apparatus provides film deposition equivalent to that attained under optimal conditions by a conventional apparatus at a smaller flow rate of the carrier gas, and increases a partial pressure of material gases of volatile components.
    Type: Application
    Filed: September 30, 2014
    Publication date: April 9, 2015
    Applicant: HERMES-EPITEK CORPORATION
    Inventors: Noboru SUDA, Takahiro OISHI, Junji KOMENO, Po-Ching LU, Shih-Yung SHIEH, Bu-Chin CHUNG
  • Patent number: 8670164
    Abstract: The present invention relates to a scanner with a real-time image auto-cutting function. The scanner includes a positioning element, a scanning scope determining unit and a scanning unit. The scanning scope determining unit is configured on the positioning element, has a specific pattern and is provided to determine a scanning scope. The scanning unit scans the specific pattern to determine the scanning scope.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: March 11, 2014
    Assignee: Mustek Systems Inc.
    Inventors: Po-Ching Lu, Hui-Wen Wen, Ming-Zhou Wang
  • Patent number: 8381018
    Abstract: The invention provides a method for data recovery. In one embodiment, a memory comprises a plurality of pages for data storage. First, first data is obtained from a host. A first page for storing the first data is then selected from the pages of the memory. A start page link indicating the first page is then stored in the memory. The first data, a first page link indicating a next page, and first FTL fragment data corresponding to the first page are then written into the first page. Next data is then obtained from the host. The next data, a next page link indicating a subsequent page, and FTL fragment data corresponding to the next page are written into the next page.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: February 19, 2013
    Assignee: Mediatek Inc.
    Inventors: Chia-Wen Lee, Shih-Hsin Chen, Shih-Ta Hung, Ping-Sheng Chen, Po-Ching Lu
  • Patent number: 8364931
    Abstract: Memory systems and mapping methods thereof are provided. In one embodiment of a memory system, an interface device is coupled between a flash memory and a host and stores a flash translation layer. The flash translation layer utilizes a data block mapping table and a page mapping table to manage data blocks and log blocks of the flash memory by a page mapping scheme and utilizes a random write page mapping table independent from the block mapping table and the page mapping table to manage the random write blocks by a random write mapping scheme. When a first predetermined condition is satisfied, the flash translation layer converts one of the data blocks (and one of the log block corresponding to the converted data block if any) into random write block(s) and utilizes the random write mapping schemes to manage the random write block(s).
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: January 29, 2013
    Assignee: Mediatek Inc.
    Inventors: Chun-Ying Chiang, Po-Ching Lu
  • Publication number: 20120319350
    Abstract: A film feeding apparatus for a film scanner includes a bottom plate, a top plate formed with a slide slot and a feed-in hole, a movable plate movable between the bottom plate and the top plate, and an actuator member co-movable with the movable plate. The movable plate cooperates with the actuator member to constitute a sliding seat that is movable between a non-feeding position whereat the actuator member is disposed in an end of the slide slot such that the movable plate is misaligned from the feed-in hole in the top plate, and a feeding position whereat the actuator member is disposed in an opposite end of the slide slot such that the movable plate is aligned with the feed-in hole. When the sliding seat is moved from the non-feeding position to the feeding position, a film is pushed into the film scanner.
    Type: Application
    Filed: August 18, 2011
    Publication date: December 20, 2012
    Applicant: MUSTEK SYSTEMS INC.
    Inventors: Po-Ching LU, Chih-Wei CHEN
  • Patent number: 8189439
    Abstract: An exemplary data recording method of an optical storage medium includes following steps: during a current recording operation for recording first data onto the optical storage medium, detecting if a fatal recording error occurs; and when the fatal recording error is detected, activating a current verifying operation to verify correctness of a recorded data section on the optical storage medium. The recorded data section is recorded onto the optical storage medium according to second data during a previous recording operation, and data recording of the second data has been verified during a previous verifying operation prior to the current recording operation.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: May 29, 2012
    Assignee: Mediatek Inc.
    Inventors: Sheng-Yen Ho, Po-Ching Lu, Hsuan-Han Huang
  • Publication number: 20120026560
    Abstract: The present invention relates to a scanner with a real-time image auto-cutting function. The scanner includes a positioning element, a scanning scope determining unit and a scanning unit. The scanning scope determining unit is configured on the positioning element, has a specific pattern and is provided to determine a scanning scope. The scanning unit scans the specific pattern to determine the scanning scope.
    Type: Application
    Filed: March 8, 2011
    Publication date: February 2, 2012
    Applicant: MUSTEK SYSTEMS INC.
    Inventors: Po-Ching Lu, Hui-Wen Wen, Ming-Zhou Wang
  • Publication number: 20120014234
    Abstract: An exemplary data recording method of an optical storage medium includes following steps: during a current recording operation for recording first data onto the optical storage medium, detecting if a fatal recording error occurs; and when the fatal recording error is detected, activating a current verifying operation to verify correctness of a recorded data section on the optical storage medium. The recorded data section is recorded onto the optical storage medium according to second data during a previous recording operation, and data recording of the second data has been verified during a previous verifying operation prior to the current recording operation.
    Type: Application
    Filed: July 16, 2010
    Publication date: January 19, 2012
    Inventors: Sheng-Yen Ho, Po-Ching Lu, Hsuan-Han Huang
  • Publication number: 20110289352
    Abstract: The invention provides a method for data recovery. In one embodiment, a memory comprises a plurality of pages for data storage. First, first data is obtained from a host. A first page for storing the first data is then selected from the pages of the memory. A start page link indicating the first page is then stored in the memory. The first data, a first page link indicating a next page, and first FTL fragment data corresponding to the first page are then written into the first page. Next data is then obtained from the host. The next data, a next page link indicating a subsequent page, and FTL fragment data corresponding to the next page are written into the next page.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: MEDIATEK INC.
    Inventors: Chia-Wen Lee, Shih-Hsin Chen, Shih-Ta Hung, Ping-Sheng Chen, Po-Ching Lu
  • Publication number: 20100332732
    Abstract: Memory systems and mapping methods thereof are provided. In one embodiment of a memory system, an interface device is coupled between a flash memory and a host and stores a flash translation layer. The flash translation layer utilizes a data block mapping table and a page mapping table to manage data blocks and log blocks of the flash memory by a page mapping scheme and utilizes a random write page mapping table independent from the block mapping table and the page mapping table to manage the random write blocks by a random write mapping scheme. When a first predetermined condition is satisfied, the flash translation layer converts one of the data blocks (and one of the log block corresponding to the converted data block if any) into random write block(s) and utilizes the random write mapping schemes to manage the random write block(s).
    Type: Application
    Filed: January 27, 2010
    Publication date: December 30, 2010
    Applicant: MEDIATEK INC.
    Inventors: Chun-Ying Chiang, Po-Ching Lu
  • Publication number: 20100228899
    Abstract: A channel activating method and a peripheral device are provided for activating a serial transmission channel to retrieve at least one firmware instruction from a host. The peripheral device includes a serial transmission port coupled to the host, a microprocessor coupled to the serial transmission port for performing functions of the peripheral device according to the firmware instruction, a memory for holding the firmware instruction, a trigger generator for generating a trigger signal by monitoring a control signal received from the host via the serial transmission port, and a signal generator, coupled to the trigger generator, for generating an indication signal to the host via the serial transmission port according to the trigger signal to activate the serial transmission channel.
    Type: Application
    Filed: May 20, 2010
    Publication date: September 9, 2010
    Inventors: Po-Ching Lu, Pao-Ching Tseng, Chuan Liu
  • Patent number: 7752363
    Abstract: A signal generating circuit of a peripheral device for sending a frame information structure (FIS) to a host via a serial transmission channel to change a busy bit representing the state of the peripheral device. The signal generating circuit includes a trigger generator and a signal generator. The trigger generator generates a trigger signal by monitoring a control signal of the signal generating circuit. The signal generator, coupled to the trigger generator, generates the indication according to the trigger signal.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: July 6, 2010
    Assignee: MediaTek Inc.
    Inventors: Po-Ching Lu, Pao-Ching Tseng, Chuan Liu
  • Patent number: 7724302
    Abstract: An opening structure of image device comprises a body, at least a sliding track, at least a sliding sleeve, and a shield, wherein the sliding sleeve slide on the sliding track in order to drive synchronously the shield to achieve opening or closing status. Furthermore, the image device is entirely enclosed into the shield so as to prevent the image device from dust pollution and unexpected damage when the shield is at closing status. Meanwhile, the shield can be designed to be a special look, which will bring to user a fashionable feeling.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: May 25, 2010
    Inventors: Anchi Yu, Po-Ching Lu, Chiung-Ying Chang
  • Publication number: 20100085848
    Abstract: The invention provides a method for performing track-seeking in an optical disk drive. In one embodiment, the optical disk drive is about to perform a series of operations comprising a plurality of prior operations and a track-seeking operation, and the track-seeking operation is divided into a pre-seek procedure and a true-seek procedure. First, a microprocessor of the optical disk drive performs the prior operations. Whether the microprocessor is unoccupied is then detected before performing the prior operations is completed. When the microprocessor is detected to be unoccupied, the microprocessor performs the pre-seek procedure. The true-seek procedure is then performed according to results of the pre-seek procedure to move the pick-up head to a destination address of an optical disk.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 8, 2010
    Applicant: MEDIATEK INC.
    Inventors: Po-Ching LU, Chun-Ying CHIANG, Shr-Cheng LI
  • Patent number: 7457898
    Abstract: A substitute serial advanced technology attachment (SATA) host is provided to communicate with a SATA device for facilitating communication with the SATA device even when a status flag of the SATA device indicates that the SATA device is busy. The SATA host is thereby able to communicate with the SATA device even when the SATA device is not fully functional.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: November 25, 2008
    Assignee: Media Tek Inc.
    Inventors: Chuan Liu, Pao-Ching Tseng, Po-Ching Lu