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    Frequency calibration device and method for programmable oscillator
    1.
    发明授权
    Frequency calibration device and method for programmable oscillator 有权
    可编程振荡器的频率校准装置和方法

    公开(公告)号：US08907730B2

    公开(公告)日：2014-12-09

    申请号：US13617514

    申请日：2012-09-14

    申请人： Chih Yen Wu ,  Chien Jung Huang ,  Hsiang Sheng Liu ,  Ching Chih Chen

    发明人： Chih Yen Wu ,  Chien Jung Huang ,  Hsiang Sheng Liu ,  Ching Chih Chen

    IPC分类号： G06F1/12 ,  H03L7/06 ,  H03L7/08

    CPC分类号： H03L7/0807 ,  G06F1/04 ,  G06F1/12 ,  H03L7/06

    摘要： A frequency calibration method for a programmable oscillator includes the steps of: counting an oversampling number of an oversampling signal and estimating an accumulated bit number of a USB data stream according to the oversampling signal; calculating a difference between the oversampling number and M times of the accumulated bit number when the accumulated bit number is larger than a predetermined value; and determining a frequency calibration step of the oversampling signal according to the difference. The present invention further provides a frequency calibration device for a programmable oscillator.

    摘要翻译： 可编程振荡器的频率校准方法包括以下步骤：对过采样信号的过采样数进行计数，并根据过采样信号估计USB数据流的累积比特数; 当所述累积比特数大于预定值时，计算所述累加比特数的所述过采样数和M次之间的差; 以及根据所述差异确定过采样信号的频率校准步骤。 本发明还提供了一种用于可编程振荡器的频率校准装置。

    Optical Sensor and Operating Method Thereof
    3.
    发明申请
    Optical Sensor and Operating Method Thereof 有权
    光学传感器及其操作方法

    公开(公告)号：US20090109440A1

    公开(公告)日：2009-04-30

    申请号：US12027626

    申请日：2008-02-07

    申请人： Chih-Yen Wu ,  Hsiang-Sheng Liu

    发明人： Chih-Yen Wu ,  Hsiang-Sheng Liu

    IPC分类号： G01N21/55

    CPC分类号： G06F3/038 ,  G01N21/55 ,  G06F3/0317 ,  G06F3/0383

    摘要： The present invention discloses an optical sensor. The optical sensor comprises a sensor for sensing a reflected light, an image capture device coupling with the sensor for reading the reflected light and calculating an average light intensity of the reflected light, a controller coupling with the image capture device for outputting a control signal based on the average light intensity, a driver coupling with the controller for receiving the control signal to output a drive current based on the control signal, and a light source coupling with the driver for receiving the drive current to generate a light.

    摘要翻译： 本发明公开了一种光学传感器。 光学传感器包括用于感测反射光的传感器，与传感器耦合以读取反射光并计算反射光的平均光强度的图像捕获装置，与图像捕获装置耦合的控制器，用于输出基于控制信号的控制信号 在平均光强度下，与控制器耦合的驱动器用于接收控制信号以基于控制信号输出驱动电流，以及与驱动器耦合的光源，用于接收驱动电流以产生光。

    Adjusting frequency device of built-in oscillator for USB interface and method thereof
    4.
    发明授权
    Adjusting frequency device of built-in oscillator for USB interface and method thereof 有权
    适用于USB接口的内置振荡器的频率调整装置及其方法

    公开(公告)号：US07315216B2

    公开(公告)日：2008-01-01

    申请号：US11408040

    申请日：2006-04-21

    申请人： Chih-Wei Yang ,  Chien-Hsun Lee ,  Hsiang-Sheng Liu ,  Juh-Gua Shiau

    发明人： Chih-Wei Yang ,  Chien-Hsun Lee ,  Hsiang-Sheng Liu ,  Juh-Gua Shiau

    IPC分类号： H03D3/24 ,  H03L7/085 ,  H03L7/033

    CPC分类号： H03L7/0812 ,  H03L7/07 ,  H03L7/085 ,  H03L7/093

    摘要： An adjusting frequency device of built-in oscillator for USB interface and a method thereof are described. It is Auto detect the error of bit-rate between the USB host and the USB device, and produce tiny counting time for clocking the clock error between the USB host and the USB device by a delay lock loop. The clock error after quantification, digitization and operation outputting a quantitative code, then the oscillator adjusts the oscillation frequency according to the quantitative code. Whereby adjusting the oscillation frequency of the USB device and the frequency of the USB host to less than 1% clock error for ensuring the accuracy of data transmission.

    摘要翻译： 描述了用于USB接口的内置振荡器的调整频率装置及其方法。 它是自动检测USB主机和USB设备之间比特率的错误，并产生微小的计数时间，通过延迟锁定环来计时USB主机和USB设备之间的时钟错误。 量化后的时钟误差，数字化和运算输出定量代码，然后振荡器根据定量代码调整振荡频率。 通过将USB设备的振荡频率和USB主机的频率调整到小于1％的时钟误差，以确保数据传输的准确性。

    FREQUENCY CALIBRATION DEVICE AND METHOD FOR PROGRAMMABLE OSCILLATOR
    6.
    发明申请
    FREQUENCY CALIBRATION DEVICE AND METHOD FOR PROGRAMMABLE OSCILLATOR 有权
    频率校准装置及可编程振荡器的方法

    公开(公告)号：US20110115568A1

    公开(公告)日：2011-05-19

    申请号：US12948265

    申请日：2010-11-17

    申请人： Chih Yen WU ,  Chien Jung HUANG ,  Hsiang Sheng LIU ,  Ching Chih CHEN

    发明人： Chih Yen WU ,  Chien Jung HUANG ,  Hsiang Sheng LIU ,  Ching Chih CHEN

    IPC分类号： H03L7/00

    CPC分类号： H03L7/0807 ,  H03L7/099

    摘要： A frequency calibration method for a programmable oscillator includes the steps of: counting an oversampling number of an oversampling signal and estimating an accumulated bit number of a USB data stream according to the oversampling signal; calculating a difference between the oversampling number and M times of the accumulated bit number when the accumulated bit number is larger than or equal to a predetermined value; and determining a frequency calibration step of the oversampling signal according to the difference. The present invention further provides a frequency calibration device for a programmable oscillator.

    摘要翻译： 可编程振荡器的频率校准方法包括以下步骤：对过采样信号的过采样数进行计数，并根据过采样信号估计USB数据流的累积比特数; 当所述累积比特数大于或等于预定值时，计算所述累加比特数的所述过采样数和M倍之间的差; 以及根据所述差异确定过采样信号的频率校准步骤。 本发明还提供了一种用于可编程振荡器的频率校准装置。

    METHOD FOR AUTOMATICALLY ADJUSTING CLOCK FREQUENCY AND CLOCK FREQUENCY ADJUSTING CIRCUIT
    7.
    发明申请
    METHOD FOR AUTOMATICALLY ADJUSTING CLOCK FREQUENCY AND CLOCK FREQUENCY ADJUSTING CIRCUIT 审中-公开
    用于自动调整时钟频率和时钟调整电路的方法

    公开(公告)号：US20090284298A1

    公开(公告)日：2009-11-19

    申请号：US12261436

    申请日：2008-10-30

    申请人： Hsiang Sheng LIU

    发明人： Hsiang Sheng LIU

    IPC分类号： G06F1/04

    CPC分类号： G06F1/12

    摘要： A method for automatically adjusting the clock frequency for a USB interface including the steps of: generating a clock signal with an adjustable frequency; receiving a USB differential signal; counting the clock signal based on each frame time of the USB differential signal and obtaining a count value; and adjusting the frequency of the clock signal when the count value exceeds a predetermined count range. The present invention further provides a clock frequency adjusting circuit.

    摘要翻译： 一种用于自动调整USB接口的时钟频率的方法，包括以下步骤：产生具有可调频率的时钟信号; 接收USB差分信号; 根据USB差分信号的每帧时间对时钟信号进行计数，得到计数值; 以及当所述计数值超过预定计数范围时调整所述时钟信号的频率。 本发明还提供一种时钟频率调整电路。

    Method and apparatus for interfacing a peripheral device corresponding to the detection of interface
    8.
    发明授权
    Method and apparatus for interfacing a peripheral device corresponding to the detection of interface 有权
    对应于接口检测的外围设备接口的方法和装置

    公开(公告)号：US07415546B2

    公开(公告)日：2008-08-19

    申请号：US11266277

    申请日：2005-11-04

    申请人： Hsiang Sheng Liu ,  Pak Man Ma

    发明人： Hsiang Sheng Liu ,  Pak Man Ma

    IPC分类号： G06F3/00

    CPC分类号： G06F13/4072

    摘要： The invention relates to an apparatus for interfacing a peripheral device corresponding to the detection of interface, which comprises: a regulator, for regulating the working voltage of the circuit of the apparatus; an USB physical layer with switch controller, for detecting and determining whether the interface to which the peripheral device is connected is an USB interface and thus being capable of enabling an USB mode of the apparatus; at least four pull-high switch resistors; and an analog switch, capable issuing an analog signal while the apparatus is in the USB mode; wherein the PS2 mode of the apparatus is enabled while the USB physical layer with switch controller detects no USB interface being connected to the peripheral device, and the mode of the apparatus is controlled by the interaction of the on/off statuses of the four pull-high switch resistors.

    摘要翻译： 本发明涉及一种用于接口对应于接口检测的外围设备的装置，包括：调节器，用于调节设备电路的工作电压; 具有开关控制器的USB物理层，用于检测和确定外围设备连接的接口是否是USB接口，从而能够启用设备的USB模式; 至少四个上拉开关电阻; 以及模拟开关，其能够在所述装置处于USB模式时发出模拟信号; 其中所述设备的PS2模式被启动，而具有开关控制器的USB物理层检测到没有连接到所述外围设备的USB接口，并且所述设备的模式通过所述四个下拉链路的接通/断开状态的相互作用来控制， 高开关电阻。

    Programmable memory device and memory access method
    10.
    发明授权
    Programmable memory device and memory access method 有权
    可编程存储器件和存储器访问方法

    公开(公告)号：US08644076B2

    公开(公告)日：2014-02-04

    申请号：US13398294

    申请日：2012-02-16

    申请人： Shih Chang Chi ,  Hsiang Sheng Liu ,  Kuo Jui Sun ,  Yen Min Chang

    发明人： Shih Chang Chi ,  Hsiang Sheng Liu ,  Kuo Jui Sun ,  Yen Min Chang

    IPC分类号： G11C11/34

    CPC分类号： G11C17/08 ,  G11C17/14 ,  G11C2216/26

    摘要： A programmable memory device includes a plurality of one-time programmable (OTP) memory units, a search unit, a writing unit, and a reading unit. Each OTP memory unit is assigned an address. The search unit searches for the first writable OTP memory unit from the plurality of OTP memory units in a writing operation, or searches for the last programmed OTP memory unit from the plurality of OTP memory units in a reading operation. The writing unit writes data to be written and the bit length of the data to the first writable OTP memory unit. The reading unit sequentially reads data from the last programmed OTP memory unit.

    摘要翻译： 可编程存储器件包括多个一次可编程（OTP）存储器单元，搜索单元，写入单元和读取单元。 每个OTP存储单元被分配一个地址。 搜索单元在写入操作中从多个OTP存储器单元中搜索第一可写OTP存储器单元，或者在读取操作中从多个OTP存储器单元中搜索最后编程的OTP存储器单元。 写入单元将要写入的数据和数据的位长度写入第一可写OTP存储单元。 读取单元从最后编程的OTP存储单元顺序读取数据。