Patents by Inventor Narciso Repollo Semira

Narciso Repollo Semira 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).

  • Wakeup sequence for two-wire daisy chain communication system
    Patent number: 10397668
    Abstract: A plurality of batteries connected in series are monitored by a plurality of monitor devices, respectively. The monitor devices are connected in series to communicate under the daisy chain communication system. The daisy chain communication system includes a micro-control unit for producing a binary signal, a communication device for converting the binary signal to a pulsating signal. The communication device produces a special code based on an instructions from the micro-control unit. Each monitor device changes between a communication OFF state and a communication ON state. Each monitor device has a signal detector which operates during the communication OFF state and detects the special code, whereby upon detection of the special code, the signal detector generates a wakeup signal so that the monitor device is changed from the communication OFF state to communication ON state.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: August 27, 2019
    Assignees: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., PANASONIC ASIA PACIFIC PTE. LTD.
    Inventors: Hong Meng Tang, Chung Kiong Leslie Khoo, Tien Yew Kang, Muhammad s/o Abuturab, Narciso Repollo Semira, Gorou Mori
  • WAKEUP SEQUENCE FOR TWO-WIRE DAISY CHAIN COMMUNICATION SYSTEM
    Publication number: 20170010329
    Abstract: A plurality of batteries connected in series are monitored by a plurality of monitor devices, respectively. The monitor devices are connected in series to communicate under the daisy chain communication system. The daisy chain communication system includes a micro-control unit for producing a binary signal, a communication device for converting the binary signal to a pulsating signal. The communication device produces a special code based on an instructions from the micro-control unit. Each monitor device changes between a communication OFF state and a communication ON state. Each monitor device has a signal detector which operates during the communication OFF state and detects the special code, whereby upon detection of the special code, the signal detector generates a wakeup signal so that the monitor device is changed from the communication OFF state to communication ON state.
    Type: Application
    Filed: July 6, 2015
    Publication date: January 12, 2017
    Applicants: Panasonic Intellectual Property Management Co., Ltd., PANASONIC ASIA PACIFIC PTE. LTD.
    Inventors: Hong Meng TANG, Chung Kiong Leslie KHOO, Tien Yew KANG, Muhammad s/o ABUTURAB, Narciso Repollo SEMIRA, Gorou MORI
  • LED matrix driver ghost image prevention apparatus and method
    Patent number: 8659514
    Abstract: LED drivers specially directed to LED matrix driver's ghost image prevention is disclosed. The LED driver receives an external input and decodes the input to produce a time multiplex timing on turning on an LED array. The LED driver inserts a dead time to the outputs and during this time the ghost image prevention circuit discharges the output stray capacitances to a predetermined level.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: February 25, 2014
    Assignees: Panasonic Corporation, Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Etsuji Sato, Atsushi Kitagawa, Yoshihito Kawakami, Chun Kiong Leslie Khoo, Ulysses Ramos Lopez, Narciso Repollo Semira, Jiong Fu
  • LED MATRIX DRIVER GHOST IMAGE PREVENTION APPARATUS AND METHOD
    Publication number: 20120176062
    Abstract: LED drivers specially directed to LED matrix driver's ghost image prevention is disclosed. The LED driver receives an external input and decodes the input to produce a time multiplex timing on turning on an LED array. The LED driver inserts a dead time to the outputs and during this time the ghost image prevention circuit discharges the output stray capacitances to a predetermined level.
    Type: Application
    Filed: January 11, 2011
    Publication date: July 12, 2012
    Applicants: PANASONIC SEMICONDUCTOR ASIA PTE., LTD., PANASONIC CORPORATION
    Inventors: Etsuji SATO, Atsushi KITAGAWA, Yoshihito KAWAKAMI, Chun Kiong Leslie KHOO, Ulysses Ramos LOPEZ, Narciso Repollo SEMIRA, Jiong FU
  • Output DC offset protection for class D amplifiers
    Patent number: 7692488
    Abstract: A class D amplifier with output DC offset protection is disclosed. The DC offset protection receives a PWM input signals from the outputs and investigates the PWM output signals whether there is a large DC voltage difference is being reflected on the speaker load. If so, shutdown signal SD will be sent by the DC offset protection to the PWM control logic and gate driver, thus, shutting down the output of the class D system and preventing disastrous condition from being develop across the speaker.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: April 6, 2010
    Assignees: Panasonic Corporation, Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Shiah Siew Wong, Wee Sien Hong, Chee Kuan Leong, Narciso Repollo Semira
  • OUTPUT DC OFFSET PROTECTION FOR CLASS D AMPLIFIERS
    Publication number: 20090219090
    Abstract: A class D amplifier with output DC offset protection is disclosed. The DC offset protection receives a PWM input signals from the outputs and investigates the PWM output signals whether there is a large DC voltage difference is being reflected on the speaker load. If so, shutdown signal SD will be sent by the DC offset protection to the PWM control logic and gate driver, thus, shutting down the output of the class D system and preventing disastrous condition from being develop across the speaker.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 3, 2009
    Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., PANASONIC SEMICONDUCTOR ASIA PTE. LTD.
    Inventors: Shiah Siew WONG, Wee Sien HONG, Chee Kuan LEONG, Narciso Repollo SEMIRA