公开(公告)号：US20090116567A1

公开(公告)日：2009-05-07

申请号：US11979687

申请日：2007-11-07

申请人： Albert Chen ,  Kuang-Ping Ma

发明人： Albert Chen ,  Kuang-Ping Ma

IPC分类号： H04L27/28

CPC分类号： H04L25/0228 ,  H04L25/0212 ,  H04L25/022

摘要： The present invention discloses a channel estimation method for Bluetooth signals through a multipath propagation channel, using a SYNC sequence as a preamble sequence. It mainly comprises the steps of: use of SYNC sequence as input to LS-based channel impulse response estimation, precomputation of local frequency domain preamble, precomputation of local inverted frequency domain preamble and shortening of estimated channel impulse response for further equalization purposes. The proposed channel estimation method and apparatus according to the present invention enables use of efficient equalization algorithms, therefore mitigating ISI and very successfully estimates propagation conditions while being very implementation-friendly.

摘要翻译： 本发明公开了一种使用SYNC序列作为前导序列的通过多径传播信道的蓝牙信号的信道估计方法。 它主要包括以下步骤：使用SYNC序列作为基于LS的信道脉冲响应估计的输入，本地频域前导码的预计算，本地反向频域前导码的预计算和用于进一步均衡的缩短估计的信道脉冲响应。 根据本发明的所提出的信道估计方法和装置使得能够使用有效的均衡算法，从而减轻ISI并且非常成功地估计传播条件，同时非常实现友好。

公开(公告)号：US20080100260A1

公开(公告)日：2008-05-01

申请号：US11649763

申请日：2007-01-05

申请人： Chih-Min Hsu ,  Dar-Cherng Su ,  Albert Chen ,  Cheng-Chieh Ku ,  Jui-Liang Wang ,  Charles Huang

发明人： Chih-Min Hsu ,  Dar-Cherng Su ,  Albert Chen ,  Cheng-Chieh Ku ,  Jui-Liang Wang ,  Charles Huang

IPC分类号： H02J7/00

CPC分类号： H02J7/0073 ,  H01M10/052 ,  H01M10/44

摘要： A charging control method of lithium battery is provided. At the beginning, a voltage detect circuit detects the current voltage of the battery and the microprocessor decides a proper charging stage, and then modulates a power as an appropriate constant current or an appropriate constant voltage by the pulse width modulation (PWM) function of the microprocessor to charge the battery. Next, repeatedly detects the voltage, decides the charging stage, charges the battery, compares the voltage of the battery with the default voltage . . . and so on until the charging process is completed.

摘要翻译： 提供锂电池的充电控制方法。 开始时，电压检测电路检测电池的当前电压，并且微处理器确定适当的充电阶段，然后通过脉冲宽度调制（PWM）功能将功率调制为适当的恒定电流或适当的恒定电压 微处理器为电池充电。 接下来，反复检测电压，确定充电阶段，对电池充电，将电池电压与默认电压进行比较。 。 。 等等，直到充电过程完成。

公开(公告)号：US20070273650A1

公开(公告)日：2007-11-29

申请号：US11439991

申请日：2006-05-25

申请人： Hsin-Ju Wu ,  Hung-Mao Chang ,  Hsin-Ling Chu ,  Albert Chen

发明人： Hsin-Ju Wu ,  Hung-Mao Chang ,  Hsin-Ling Chu ,  Albert Chen

IPC分类号： G09G5/08

CPC分类号： G06F3/0383

摘要： The present invention discloses a method of data transferring for a Bluetooth mouse, wherein the time interval between data transmissions is adjusted according to the coordinate displacement values created by the movements of the mouse; before displacement detection and data transference, the method firstly checks whether the current data transfer rate is at a higher value or a lower value and then determines whether the time interval with a higher transfer frequency is to be reduced to the time interval with a lower transfer frequency.

摘要翻译： 本发明公开了一种用于蓝牙鼠标的数据传输方法，其中数据传输之间的时间间隔根据由鼠标移动产生的坐标位移值进行调整; 在位移检测和数据传输之前，该方法首先检查当前数据传输速率是在较高的值还是较低的值，然后确定具有较高传输频率的时间间隔是否减少到具有较低传输的时间间隔 频率。

公开(公告)号：US20060001492A1

公开(公告)日：2006-01-05

申请号：US10882215

申请日：2004-07-02

申请人： Sheng Chang ,  Jia Chen ,  Cherng Liu ,  Hung Chen ,  Shu Tang ,  Albert Chen

发明人： Sheng Chang ,  Jia Chen ,  Cherng Liu ,  Hung Chen ,  Shu Tang ,  Albert Chen

IPC分类号： H03F3/191

CPC分类号： H03F3/191 ,  H03F2200/147 ,  H03F2200/222 ,  H03F2200/372

摘要： The present invention discloses a bandpass amplifier having gain and bandpass performance. The bandpass amplifier includes an input match unit for matching the gain of the amplifier and having a first filter response; a first bias unit electrically connected to the input match unit for driving the first terminal of the amplifier and having a first high pass filter response; a gain stage electrically connected to the first bias unit for providing the flat gain of the amplifier; a second bias unit electrically connected to the gain stage for driving the second terminal of the amplifier and having a second high pass filter response; and an output match unit electrically connected to the second bias unit for matching the gain of the amplifier and having a second filter response.

摘要翻译： 本发明公开了具有增益和带通性能的带通放大器。 带通放大器包括用于匹配放大器的增益并具有第一滤波器响应的输入匹配单元; 电连接到输入匹配单元的第一偏置单元，用于驱动放大器的第一端并具有第一高通滤波器响应; 增益级，电连接到第一偏置单元，用于提供放大器的平坦增益; 电连接到增益级的第二偏置单元，用于驱动放大器的第二端并具有第二高通滤波器响应; 以及输出匹配单元，电连接到第二偏置单元，用于匹配放大器的增益并具有第二滤波器响应。

公开(公告)号：US20050201497A1

公开(公告)日：2005-09-15

申请号：US10798393

申请日：2004-03-12

申请人： Kuang-Ping Ma ,  Chia-Yung Chiu ,  Wen-Tso Huang ,  Albert Chen

发明人： Kuang-Ping Ma ,  Chia-Yung Chiu ,  Wen-Tso Huang ,  Albert Chen

IPC分类号： H04L27/08

CPC分类号： H03G3/3052

摘要： An automatic gain control and its method are disclosed. An average power computing unit computes the power of a received signal. A power range monitoring unit monitors its change. If the signal power fluctuates around a threshold, the system enters an acquisition mode and the gain is tuned back to a default value. If the signal power is above an upper limit of a tracking range, a gain decreasing unit reduces the gain. If the signal power goes below a lower limit of the tracking range, a gain increasing unit raises the gain. Once the power falls in the tracking range, the system enters a tracking mode to make immediate responses toward the gain of the received signal.

摘要翻译： 公开了一种自动增益控制及其方法。 平均功率计算单元计算接收信号的功率。 功率范围监视单元监视其变化。 如果信号功率在阈值附近波动，则系统进入采集模式，并将增益调回到默认值。 如果信号功率高于跟踪范围的上限，则增益减小单元减小增益。 如果信号功率低于跟踪范围的下限，则增益增加单元提高增益。 一旦功率落在跟踪范围内，系统进入跟踪模式，立即响应于接收信号的增益。

公开(公告)号：US06280050B1

公开(公告)日：2001-08-28

申请号：US09374336

申请日：1999-08-13

申请人： Phillip Brandt Bird ,  Albert Chen

发明人： Phillip Brandt Bird ,  Albert Chen

IPC分类号： F21L404

CPC分类号： F21V21/32 ,  F21L4/06 ,  F21V21/145 ,  H01R33/94

摘要： A removable flexible extension to space apart a flashlight head and body of a commercially available flashlight, thereby adding a deformable flashlight extension that can be shaped to a desired configuration.

摘要翻译： 可拆卸的柔性延伸部，用于将商用手电筒的手电筒头和主体分开，从而增加可变形的手电筒延伸部，其可以成形为期望的构造。

公开(公告)号：US5608727A

公开(公告)日：1997-03-04

申请号：US433878

申请日：1995-05-02

申请人： John A. Perreault ,  Abhay Joshi ,  Albert Chen ,  Eva Labowicz

发明人： John A. Perreault ,  Abhay Joshi ,  Albert Chen ,  Eva Labowicz

IPC分类号： H04J1/12 ,  H04W28/18 ,  H04J1/10

CPC分类号： H04W28/18 ,  H04J1/12

摘要： Frequency spectrum management provides for dynamic spectrum usage adjustment among applications on a shared medium. Dynamic resource management methods are applied to the problem of managing spectrum and matching application specific requirements to real-time spectrum characteristics so that more optimal use of the available spectrum may be made. At least a first spectrum agent is assigned to each of the plurality of different applications, for managing channels allocated to the application, and a spectrum manager allocates frequency channels to the plurality of different applications based on the following at least one of parameters of a frequency channel required to implement the application and predetermined requirements based on time of day demand changes for the application.

摘要翻译： 频谱管理提供在共享介质上的应用之间的动态频谱使用调整。 动态资源管理方法应用于管理频谱和将应用特定要求与实时频谱特性相匹配的问题，从而可以更好地利用可用频谱。 至少第一频谱代理被分配给多个不同应用中的每一个，用于管理分配给应用的信道，并且频谱管理器基于以下的频率参数中的至少一个来分配频率信道到多个不同的应用 基于应用程序的时间需求变化实现应用程序所需的通道和预定要求。

公开(公告)号：US20190282850A1

公开(公告)日：2019-09-19

申请号：US15923653

申请日：2018-03-16

申请人： Albert Chen

发明人： Albert Chen

IPC分类号： A63B21/00 ,  A63B21/002

摘要： A plank assist device is presented comprising a base and a strap. The base has a first portion for supporting a human palm and a second portion for supporting a portion of a human thumb. The first portion comprises a first portion top surface, a first portion bottom surface, a first portion rear end and a first portion front end. The second portion comprises a second portion top surface, a second portion bottom surface, a second portion rear end and a second portion front end. The second portion is shorter in length and narrower in width than the first portion. In addition, the first portion rear end may be higher in height than the first portion front end, and the second portion rear end may be higher in height than the second portion front end.

公开(公告)号：US09469154B2

公开(公告)日：2016-10-18

申请号：US13152312

申请日：2011-06-03

申请人： Albert Chen

发明人： Albert Chen

IPC分类号： B43L1/00 ,  B44F11/00 ,  B42D5/00

CPC分类号： B44F11/00 ,  B42D5/00 ,  B42D5/003 ,  B43L1/00

摘要： A flexible adhesive notepad has a tacky elastomeric layer made of a naphthenic oil-impregnated thermoplastic rubber, and a face layer made of a polymer film permanently adhered to the elastomeric layer by an oil-based adhesive. The face layer has graphics to emulate a notebook. The graphics include an image of a blank sheet of a bound notebook. The face layer and elastomeric layer have a common periphery that emulates a notebook. The periphery has the shape of a bound notebook.

摘要翻译： 柔性粘合记事本具有由环烷油浸渍的热塑性橡胶制成的粘性弹性体层，以及由通过油基粘合剂永久地粘附到弹性体层的聚合物膜制成的面层。 面层有图形来模拟笔记本。 图形包括装订笔记本的空白图像。 面层和弹性体层具有模拟笔记本的公共外围。 周边具有绑定笔记本的形状。

公开(公告)号：US07505790B2

公开(公告)日：2009-03-17

申请号：US11145943

申请日：2005-06-07

申请人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Yi-Yu Lu ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

发明人： Sheng-Fuh Chang ,  Wen-Lin Chen ,  Yi-Yu Lu ,  Hung-Cheng Chen ,  Shu-Fen Tang ,  Albert Chen

IPC分类号： H04B1/38 ,  H04M1/00

CPC分类号： H04B1/48

摘要： The present invention discloses an antenna diversity switch, used for receiving and transmitting RF signals for dual-mode co-existence wireless communication system. The antenna diversity switch comprises a first transmitting port; a second transmitting port; a receiving port; a first control unit, electrically connected between the first transmitting port and a first antenna; a second control unit, electrically connected between the first transmitting port and a second antenna; a third control unit, electrically connected between the second transmitting port and the first antenna; a forth control unit, electrically connected between the second transmitting port and the second antenna; a fifth control unit, electrically connected between the receiving port and the first antenna; a sixth control unit, electrically connected between the receiving port and the second antenna. The antenna diversity switch according to the present invention meets the requirement of IEEE 802.11b/g WLAN and Bluetooth co-existence operation with reduction of three or four antennas in the prior art to two antennas. Moreover, it provides antenna diversity for both WLAN and Bluetooth systems, where in the prior-art WLAN and Bluetooth co-existence system only WLAN system has the antenna diversity.

摘要翻译： 本发明公开了一种用于接收和发送用于双模共存无线通信系统的RF信号的天线分集开关。 天线分集开关包括第一发射端口; 第二个发送端口; 接收端口 第一控制单元，电连接在第一发送端口和第一天线之间; 第二控制单元，电连接在第一发送端口和第二天线之间; 第三控制单元，电连接在第二发送端口和第一天线之间; 第四控制单元，电连接在第二发送端口和第二天线之间; 电连接在所述接收端口和所述第一天线之间的第五控制单元; 电连接在接收端口和第二天线之间的第六控制单元。 根据本发明的天线分集交换机通过将现有技术中的三个或四个天线减少到两个天线来满足IEEE 802.11b / g WLAN和蓝牙共存操作的要求。 此外，它为WLAN和蓝牙系统提供天线分集，其中在现有技术的WLAN和蓝牙共存系统中，只有WLAN系统具有天线分集。