Patents by Inventor Zhitian Ye

Zhitian Ye 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).

  • Standby power supply circuit for 2-wire bus intercom system and apparatus thereof
    Patent number: 9641023
    Abstract: The present invention discloses a standby power supply circuit for a 2-wire bus intercom system and an apparatus thereof. The standby power supply circuit is separated into two power supply modules; in which the first power supply module is a power supply to standby circuit and the second power supply module is a power supply to operation circuit; said power supply to operation circuit is switched off by a constant current switch when the device load is at the standby status; and said power supply to standby circuit comprises a constant current circuit whose alternating current impedance is very large. The solutions of the present invention achieve larger alternating current impedance for the 2-wire intercom system, which can offer sufficient power for many device loads both in the conditions of operation and standby statuses.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: May 2, 2017
    Assignee: ABB Schweiz AG
    Inventors: Dalin Zhou, Yangpeng Zhang, Mingyuan Liu, Huaping Li, Zhitian Ye
  • STANDBY POWER SUPPLY CIRCUIT FOR 2-WIRE BUS INTERCOM SYSTEM AND APPARATUS THEREOF
    Publication number: 20140252861
    Abstract: The present invention discloses a standby power supply circuit for a 2-wire bus intercom system and an apparatus thereof. The standby power supply circuit is separated into two power supply modules; in which the first power supply module is a power supply to standby circuit and the second power supply module is a power supply to operation circuit; said power supply to operation circuit is switched off by a constant current switch when the device load is at the standby status; and said power supply to standby circuit comprises a constant current circuit whose alternating current impedance is very large. The solutions of the present invention achieve larger alternating current impedance for the 2-wire intercom system, which can offer sufficient power for many device loads both in the conditions of operation and standby statuses.
    Type: Application
    Filed: April 16, 2012
    Publication date: September 11, 2014
    Inventors: Dalin Zhou, Yangpeng Zhang, Mingyuan Liu, Huaping Li, Zhitian Ye