Plural Stage Patents (Class 340/14.2)
  • Patent number: 10505867
    Abstract: The present disclosure provides a switch fabric system, the system including M first crossbar units (CUs) and N second CUs, where each first CU includes L first input ports, a first arbiter, a first crossbar, and N first output ports. Each second CU includes M second input ports, a second arbiter, a second crossbar, and one second output port. M×N first output ports of the M first CUs are respectively coupled to N×M second input ports of the N second CUs, where N first output ports of each first CU are respectively coupled to and in a one-to-one correspondence with one second input port of each second CU in the N second CUs. In the example system, N equals M×L, and M, N, and L are all positive integers.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 10, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Wan Lam
  • Patent number: 9952609
    Abstract: A low dropout linear regulator circuit comprises a voltage reference source module (100), an error amplifier (200), a reference voltage determining module (300), a power transmission device (400) and a feedback module (500); wherein the voltage reference source module (100) provides a reference voltage for the error amplifier (200), the reference voltage determining module (300) controls an enablement of the error amplifier (200) according to whether the voltage reference source module (100) is completely started, the error amplifier (200) controls ON/OFF of the power transmission device (400) according to the reference voltage provided by the voltage reference source module (100) and a feedback voltage provided by the feedback module (500). A chip having the above low dropout linear regulator circuit and a electronic device having the above chip are provided.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: April 24, 2018
    Assignee: CSMC TECHNOLOGIES FABI CO., LTD.
    Inventors: Nan Zhang, Jing Zhou
  • Patent number: 9830809
    Abstract: The present disclosure generally relates to an electrical device controller comprising a signal input module for receiving an audio signal, a signal analyzer for breaking the audio signal into individual frequency components and determining each of the individual frequency components' magnitude, a processor for generating control signals based on the individual frequency components' magnitudes and a control signal output module for outputting the control signals to a power supply unit. The power supply unit comprises a plurality of electrical switches and the plurality of electrical switches are being activated or deactivated based on the control signals.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: November 28, 2017
    Inventor: Evan Zinger
  • Patent number: 6696917
    Abstract: A novel folded Clos switch apparatus and method therefore for reducing the number of unemployed I/O terminals of a multistage Clos switching network by partitioning a crossbar switch to provide both the first (yth) and last (x−y+1th) stage of a multistage Clos switch where x is the total number of stages in the general case.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: February 24, 2004
    Assignee: Nortel Networks Limited
    Inventors: Michael L. Heitner, Jian J. Song, Rudy Vianna
  • Patent number: 6525650
    Abstract: A high density electronic switching matrix (ESM) includes several splitting modules (200) arranged along a first axis, each including a signal input (202) and several splitter outputs (204). The ESM (500, 600) further includes several switching modules (400) arranged along a second axis perpendicular to the first axis. Each switching module (400) includes switching inputs (402) coupled individually to an output of each of the splitting modules (200). The ESM (500, 600) is further characterized by couplings between the splitter modules and the switching modules. The couplings are formed by mating male and female connectors (300) integrated into the splitting modules and the switching modules. The couplings support extremely high frequency operation. The splitting modules (200) and the switching modules (400) may thus be coupled closely together to form a dense, high frequency, switching matrix, and may be stacked upon one another.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: February 25, 2003
    Assignee: TRW Inc.
    Inventors: Steven S. Chan, George M. Hayashibara, Chun-Hong Harry Chen, Davie C. Liu