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    • 4. 发明授权
    • Method and apparatus for determining sound standard for input sound signal
    • 用于确定输入声音信号的声音标准的方法和装置
    • US08090110B2
    • 2012-01-03
    • US12081745
    • 2008-04-21
    • Tien-Ju TsaiShih-Chuan LuShu-Ming Liu
    • Tien-Ju TsaiShih-Chuan LuShu-Ming Liu
    • H04R29/00
    • H04N5/60H04N5/46H04N21/4394
    • A method for determining a sound standard for an input sound signal includes the following steps. Firstly, the input sound signal is filtered to obtain a first filtered signal corresponding to a first frequency and a second filtered signal corresponding to a second frequency. Next, the first filtered signal is frequency-demodulated to obtain a first demodulated filtered signal, and whether the input sound signal contains a FM analog component corresponding to the first frequency is determined accordingly. Next, the second filtered signal is decoded according to a digital sound standard to obtain a bit stream. Then, the bit steam is interpreted according to the digital sound standard, and whether the input sound contains a digital component corresponding to the digital sound standard is determined accordingly. Then, whether the input sound signal matches one of known sound standards is determined based on the determined results above.
    • 用于确定输入声音信号的声音标准的方法包括以下步骤。 首先,对输入声音信号进行滤波以获得对应于第一频率的第一滤波信号和对应于第二频率的第二滤波信号。 接下来,对第一滤波信号进行频率解调以获得第一解调滤波信号,并且相应地确定输入声音信号是否包含与第一频率相对应的FM模拟分量。 接下来,根据数字声音标准对第二滤波信号进行解码以获得比特流。 然后,根据数字声音标准解释位蒸汽,并且相应地确定输入声音是否包含与数字声音标准相对应的数字分量。 然后,基于上述确定的结果来确定输入声音信号是否与已知声音标准中的一个匹配。
    • 5. 发明授权
    • Toy car camera system and rear vision mirrors
    • 玩具车相机系统和后视镜
    • US06497608B2
    • 2002-12-24
    • US09803894
    • 2001-03-13
    • Heng-Chun HoShu-Ming Liu
    • Heng-Chun HoShu-Ming Liu
    • G08C1916
    • A63H30/04A63H17/00A63H17/32
    • A remote control toy car set comprising a toy car with a housing having a driving device, a camera system, and a first radio module. The camera system is fixed on the housing for taking images of the toy car in motion and generating corresponding image signals, and the first radio module is fixed on the housing and electrically connects with both the driving device and the camera system. The first radio module transfers the image signals from the camera system and receives radio control signals in order to control the operations of the driving device. The remote control toy car set also includes a remote control device for controlling the toy car. The remote control device includes a display for displaying images, a remote control interface for generating control signals, and a second radio module for transferring both the image signals from the toy car to the display and the control signals from the remote control interface to the toy car.
    • 一种遥控玩具车组,包括具有驾驶装置的壳体的玩具车,照相机系统和第一无线电模块。 相机系统固定在壳体上,用于拍摄玩具车的图像并产生相应的图像信号,并且第一无线电模块固定在壳体上并与驱动装置和相机系统电连接。 第一无线电模块从相机系统传送图像信号并且接收无线电控制信号,以便控制驱动装置的操作。 遥控玩具车组还包括用于控制玩具车的遥控装置。 遥控装置包括用于显示图像的显示器,用于产生控制信号的遥控接口和用于将来自玩具车的图像信号两者传送到显示器的第二无线电模块以及从远程控制接口到玩具的控制信号 汽车。
    • 6. 发明授权
    • Initialization method for one-way communications and apparatus for use therewith
    • 单向通信的初始化方法及其使用的装置
    • US06243079B1
    • 2001-06-05
    • US09110651
    • 1998-07-07
    • Shu-Ming Liu
    • Shu-Ming Liu
    • G09G500
    • G06F3/0227G06F3/0231
    • A method of simulating two-way communications over a one-way communications system, enabling an indicator on the transmitter to reflect the manner in which signals from a function key on the transmitter side will be interpreted by an application on the receiver side of the communications system, is carried out by causing a list of current states of the function on the receiver side of the communications system rather than transmitting a signal concerning the current state of the list to the transmitter side. The transmitter side of the communication system is part of a wireless keyboard that does not include a receiver to properly indicate which of two possible states a function of the computer will be in even though the computer has no way of communicating that state to the receiver.
    • 一种通过单向通信系统模拟双向通信的方法,使得发射机上的指示符反映来自发射机侧的功能键的信号将由通信的接收机侧上的应用解释的方式 系统通过在通信系统的接收机侧引起功能的当前状态的列表来执行,而不是将与列表的当前状态相关的信号发送到发送机侧。 通信系统的发射机侧是无线键盘的一部分,其不包括接收器,以正确地指示计算机的功能将处于两个可能状态中的哪一个,即使计算机无法将该状态传送到接收器。
    • 7. 发明授权
    • Quadrature encoding device with slope-triggered digitizing circuit
    • 具斜坡触发数字化电路的正交编码装置
    • US6097319A
    • 2000-08-01
    • US123006
    • 1998-07-27
    • Shu-Ming Liu
    • Shu-Ming Liu
    • G01D5/244G06F3/0354H03M1/22
    • G01D5/2448G01D5/24476G06F3/03543
    • A quadrature encoding device with slope-triggered digitizing circuit is provided for use in a mechanical mouse. The quadrature encoding device is capable of producing two square-wave signals indicative of the current mouse movement for position control of the mouse cursor on the computer screen. The slope-triggered digitizing circuit includes a delay circuit and an analog comparator, which is capable of generating a first voltage output when the slope of the opto-electrical signal from the photo detector is positive, and a second voltage output when the slope is negative. It is characteristic feature of the quadrature encoding device that the output characteristic of the slope-triggered digitizing circuit would not be affected by any deviations in the output characteristic of the associated photo detectors, and also would not be affected by the ambient light. Moreover, the quadrature encoding device can operate without having to make adjustments on threshold voltage, which makes the quadrature encoding device more convenient to use, simpler in circuit complexity, and lower in manufacturing cost as compared to the prior art.
    • 提供了一种具有斜率触发数字化电路的正交编码装置,用于机械鼠标。 正交编码装置能够产生指示当前鼠标移动的两个方波信号,以便在计算机屏幕上的鼠标光标的位置控制。 斜率触发数字化电路包括延迟电路和模拟比较器,当光电检测器的光电信号的斜率为正时,能够产生第一电压输出,当斜率为负时,产生第二电压输出 。 正交编码装置的特征在于,斜率触发数字化电路的输出特性不受相关光电检测器的输出特性的任何偏差的影响,也不受环境光的影响。 此外,正交编码装置可以在不必对阈值电压进行调整的情况下操作,这使得正交编码装置与现有技术相比更方便使用,电路复杂性更简单,制造成本更低。
    • 8. 发明授权
    • Optical sensing system using two sensors to generate position signals
    • 光传感系统使用两个传感器来产生位置信号
    • US5939713A
    • 1999-08-17
    • US963478
    • 1997-11-03
    • Shu-Ming Liu
    • Shu-Ming Liu
    • G01P3/486G01D5/347
    • G01D5/347
    • The present invention discloses an optical sensing system which utilizes two sensors to detect positioning holes or an identification hole of a grid panel. The optical sensing system comprises a wheeled shaped grid panel, a sensing device and a control circuit. The panel has a grid array installed in it, and the grid array comprises a plurality of positioning holes and an identification hole. The sensing device is used for detecting movements of the grid array in left and right directions. The sensing device comprises a light source located at one side of the panel for emitting light, and two sensors located at another side of the panel for detecting the light emitted from the light source through any hole of the grid array and generating corresponding sensing signals. The control circuit is connected to the two sensors for converting the sensing signals generated by the two sensors into corresponding position signals or displacement signals. The two sensors of the sensing device are arranged in a tilted pattern over which one sensor is positioned above the other in up and down direction and the two sensors are not overlapped in left and right direction. And the shape of the identification hole is made according to the tilted pattern of the two sensors so that when any positioning hole of the grid array passes through the sensing device in left or right direction, the two sensors will sequentially detect the light passed through the positioning hole, and when the identification hole of the grid array passes through the sensing device, the two sensors will detect the light passed through the identification hole in the same time.
    • 本发明公开了一种使用两个传感器来检测网格面板的定位孔或识别孔的光学感测系统。 光学感测系统包括轮状网格面板,感测装置和控制电路。 面板上安装有栅格阵列,栅格阵列包括多个定位孔和识别孔。 感测装置用于检测网格阵列在左右方向的移动。 感测装置包括位于面板一侧的用于发光的光源,以及位于面板另一侧的两个传感器,用于通过网格阵列的任何孔检测从光源发射的光并产生相应的感测信号。 控制电路连接到两个传感器,用于将由两个传感器产生的感测信号转换成相应的位置信号或位移信号。 感测装置的两个传感器布置成倾斜的图案,一个传感器在上下方向上定位在另一个传感器上方,并且两个传感器在左右方向上不重叠。 识别孔的形状根据两个传感器的倾斜图案制成,当网格阵列的任何定位孔沿左右方向通过感测装置时,两个传感器将依次检测通过 定位孔,并且当网格阵列的识别孔通过感测装置时,两个传感器将同时检测通过识别孔的光。