公开(公告)号：US20200350897A1

公开(公告)日：2020-11-05

申请号：US16719998

申请日：2019-12-19

Applicant: IC Plus Corp.

Inventor： Wen-Wei Chen

IPC: H03K3/0233

Abstract: A common mode voltage level shifting and locking circuit is provided. The common mode voltage level shifting and locking circuit includes an operational amplifier, a source follower, a first feedback circuit, and a second feedback circuit. The operational amplifier generates a first common mode voltage. The source follower shifts the first common mode voltage to generate a second common mode voltage. The first feedback circuit generates a first control signal according to the second common mode voltage. The operational amplifier adjusts the first common mode voltage according to the first control signal. The second feedback circuit generates a second control signal according to an external reference voltage provided by a next stage circuit. The source follower adjusts the second common mode voltage according to the second control signal such that the next stage circuit reaches a maximum input common mode range.

公开(公告)号：US09831913B2

公开(公告)日：2017-11-28

申请号：US15077245

申请日：2016-03-22

Applicant: IC Plus Corp.

Inventor： Hann Yun Tarn

IPC: G06F1/30 ,  H04B3/54 ,  H04L12/10

CPC classification number: H04B3/54 ,  H04L12/10 ,  H04L43/08

Abstract: A power source equipment for Power over Ethernet system continues to inspect power consumption of all connecting ports, in order to adjust power allocation to the communication ports. When the power consumption of a particular connecting port shows a trend of increase, its power allocation is increased; otherwise, decreased. After a total power allocation is decreased, additionally available power may be generated and provided to an additional communication port. A method for adjusting the power allocation is also disclosed.

公开(公告)号：US08238451B2

公开(公告)日：2012-08-07

申请号：US12388757

申请日：2009-02-19

Applicant: Tsu-Chun Liu ,  Liang-Ping Lin

Inventor： Tsu-Chun Liu ,  Liang-Ping Lin

IPC: H04B3/00

CPC classification number: H04L25/028

Abstract: A network transmitting apparatus and a power saving method thereof are provided. The network transmitting apparatus includes a chip, a transformer, and a power regulating unit. The chip includes a detecting and controlling unit, an analog circuit, and a digital circuit. The detecting and controlling unit receives a received signal and detects the received signal and a state of the chip to generate a first control signal. The transformer has a first side coupled to the chip and a second side. The power regulating unit coupled to the detecting and controlling unit and a center tap of the first side of the transformer is used for receiving a voltage, generating a first regulated voltage according to the first control signal, and connecting the first regulated voltage to the center tap of the first side of the transformer, the analog circuit, and the digital circuit.

Abstract translation: 提供一种网络发送装置及其省电方法。 网络发送装置包括芯片，变压器和功率调节单元。 该芯片包括检测和控制单元，模拟电路和数字电路。 检测和控制单元接收接收信号并检测接收到的信号和芯片的状态以产生第一控制信号。 变压器具有耦合到芯片的第一侧和第二侧。 耦合到检测和控制单元的功率调节单元和变压器的第一侧的中心抽头用于接收电压，根据第一控制信号产生第一调节电压，并将第一调节电压连接到中心 抽头变压器的第一面，模拟电路和数字电路。

公开(公告)号：US08054100B1

公开(公告)日：2011-11-08

申请号：US12958410

申请日：2010-12-02

Applicant: Ting-Ko Liao ,  Tsu-Chun Liu

Inventor： Ting-Ko Liao ,  Tsu-Chun Liu

IPC: H03K17/16

CPC classification number: H04L25/0278 ,  H04L25/0266 ,  H04L25/0272 ,  H04L25/028

Abstract: A line transceiver apparatus for multiple transmission standards including a operational amplifier (OP-AMP), a transformer unit, a first variable resistor unit to a sixth variable resistor unit, and a variable resistor control unit is provided. The first resistor and the second resistor are coupled between transmission nodes of the line transceiver apparatus and input nodes of the OP-AMP, and the load nodes of the transformer unit are receiving nodes of the line transceiver apparatus. The variable resistor control unit adjusts the impedances of the first variable resistor unit to the sixth variable resistor unit according to a transmission standard selection signal so as to enable the line transceiver apparatus to support multiple transmission standards.

Abstract translation: 提供了包括运算放大器（OP-AMP），变压器单元，到第六可变电阻器单元的第一可变电阻器单元和可变电阻器控制单元的用于多传输标准的线路收发器设备。 第一电阻器和第二电阻器耦合在线路收发器设备的传输节点和OP-AMP的输入节点之间，并且变压器单元的负载节点正在接收线路收发器设备的节点。 可变电阻器控制单元根据传输标准选择信号调整第一可变电阻器单元与第六可变电阻器单元的阻抗，使得线路收发器设备能够支持多个传输标准。

公开(公告)号：US20100118984A1

公开(公告)日：2010-05-13

申请号：US12388757

申请日：2009-02-19

Applicant: Tsu-Chun Liu ,  Liang-Ping Lin

Inventor： Tsu-Chun Liu ,  Liang-Ping Lin

IPC: H04B3/00

CPC classification number: H04L25/028

Abstract: A network transmitting apparatus and a power saving method thereof are provided. The network transmitting apparatus includes a chip, a transformer, and a power regulating unit. The chip includes a detecting and controlling unit, an analog circuit, and a digital circuit. The detecting and controlling unit receives a received signal and detects the received signal and a state of the chip to generate a first control signal. The transformer has a first side coupled to the chip and a second side. The power regulating unit coupled to the detecting and controlling unit and a center tap of the first side of the transformer is used for receiving a voltage, generating a first regulated voltage according to the first control signal, and connecting the first regulated voltage to the center tap of the first side of the transformer, the analog circuit, and the digital circuit.

Abstract translation: 提供一种网络发送装置及其省电方法。 网络发送装置包括芯片，变压器和功率调节单元。 该芯片包括检测和控制单元，模拟电路和数字电路。 检测和控制单元接收接收信号并检测接收到的信号和芯片的状态以产生第一控制信号。 变压器具有耦合到芯片的第一侧和第二侧。 耦合到检测和控制单元的功率调节单元和变压器的第一侧的中心抽头用于接收电压，根据第一控制信号产生第一调节电压，并将第一调节电压连接到中心 抽头变压器的第一面，模拟电路和数字电路。

公开(公告)号：US20100048137A1

公开(公告)日：2010-02-25

申请号：US12259796

申请日：2008-10-28

Applicant: Tsu-Chun Liu

Inventor： Tsu-Chun Liu

IPC: H04B1/00

CPC classification number: H04B3/23

Abstract: An echo canceller and an echo cancellation method are provided. In the echo cancellation method, a transmitting data sequence is received, and M taps are provided accordingly. In addition, the M taps are received, and N taps are output according to an echo distribution information, in which the M and N are natural numbers, and M>N. Besides, the N taps are multiplied by N tap coefficients respectively to generate N products. Further, the N products are summed up to generate an echo cancellation signal. Thereby, the cost of the echo cancellation is decreased.

Abstract translation: 提供回声消除器和回声消除方法。 在回波消除方法中，接收发送数据序列，并相应地提供M个抽头。 另外，接收M个抽头，根据回波分布信息输出N个抽头，其中M和N是自然数，M> N。 此外，N个抽头分别乘以N个抽头系数，以产生N个乘积。 此外，总结N个乘积以产生回波消除信号。 因此，回波抵消的成本降低。

公开(公告)号：US20100027407A1

公开(公告)日：2010-02-04

申请号：US12243194

申请日：2008-10-01

Applicant: Tsu-Chun Liu

Inventor： Tsu-Chun Liu

IPC: H04J3/10

CPC classification number: H04B3/232

Abstract: A transceiver and an echo cancellation method are disclosed. The echo cancellation method includes producing an echo cancellation signal according to a transmission signal; adjusting the amplitude, the delay time or a combination of the amplitude and the delay time of the echo cancellation signal according to an adjusting parameter; receiving an echo signal derived from the transmission signal and performing a subtraction operation on the echo signal by using the echo cancellation signal so as to obtain an echo residual; and producing the adjusting parameter according to the echo residual. The provided method can effectively reduce the interference caused by the echo signal.

Abstract translation: 公开了一种收发机和回波消除方法。 回波消除方法包括根据发送信号产生回波消除信号; 根据调整参数调整振幅，延迟时间或回波消除信号的幅度和延迟时间的组合; 接收从发送信号导出的回波信号，并通过使用回波消除信号对回波信号进行减法运算，以获得回波残差; 并根据回波残差产生调整参数。 所提供的方法可以有效地减少由回波信号引起的干扰。

公开(公告)号：US20090013117A1

公开(公告)日：2009-01-08

申请号：US11861859

申请日：2007-09-26

Applicant: Chien-Hsing Huang

Inventor： Chien-Hsing Huang

IPC: G06F13/24

CPC classification number: G06F13/24 ,  H04L69/12 ,  H04L69/28

Abstract: A system and a method for generating an interrupt are provided. In the interrupt generating method, a time-out mechanism is executed by a second network component of a computer system after a packet processing action is finished. An interrupt is generated by the second network component only if a first network component of the computer system does not execute a polling action during a predefined period after the time-out mechanism is processed. Thus, it is not necessary to generate the interrupt every time after processing a network packet, so that less interrupts are generated and accordingly the loading of the computer system is reduced. Moreover, the reaction time of the computer system is kept to ensure the efficiency of the computer system.

Abstract translation: 提供了一种用于产生中断的系统和方法。 在中断生成方法中，在分组处理动作结束后，由计算机系统的第二网络部件执行超时机制。 仅当计算机系统的第一网络组件在超时机制被处理之后的预定时段期间不执行轮询动作时，由第二网络组件产生中断。 因此，在处理网络分组之后每次都不必产生中断，从而生成较少的中断，并且因此减少了计算机系统的加载。 此外，保持计算机系统的反应时间以确保计算机系统的效率。

公开(公告)号：US11733765B2

公开(公告)日：2023-08-22

申请号：US17368874

申请日：2021-07-07

Applicant: IC Plus Corp.

Inventor： Chuan Ching Yu

IPC: G06F1/3287 ,  H04L12/10 ,  G06F13/42 ,  G06F13/40

CPC classification number: G06F1/3287 ,  G06F13/4022 ,  G06F13/4282 ,  H04L12/10 ,  G06F2213/0016

Abstract: Control device for a power over Ethernet system having multiple power source devices comprises plural control circuits and a signal bus connecting them. Each control device connects plural power source devices and plural port switches, which controls power supply to a port to be connected by a power consuming device. Detection circuit detects at least one power supply state combination. Control signal generator picks up a power control combination signal corresponding to a detected power supply state combination from a power supply to power control look-up-table, upon change in the power supply state and provides the power control signals to corresponding port switches.

公开(公告)号：US11632257B2

公开(公告)日：2023-04-18

申请号：US17970022

申请日：2022-10-20

Applicant: IC Plus Corp.

Inventor： Chef Hsiao

IPC: G06F1/26 ,  H04L12/10 ,  H04L12/40 ,  G06F1/30

Abstract: Power over Ethernet system having multiple power source devices comprising a control device that controls power distribution to a plurality of communication ports. In the control device, a master controller provides a power supply to power consumption look-up-table to a plurality of control circuits in various manners via a series bus. When one power source device shuts down, each control circuit can rapidly shut off selected port switches connected thereto.