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1. 发明授权

US07570109B2 System and method for demodulating amplitude modulated signals 失效
标题翻译：用于解调幅度调制信号的系统和方法
公开(公告)号：US07570109B2
公开(公告)日：2009-08-04
申请号：US11266916
申请日：2005-11-04
申请人： Lian-Chun Xu , Kok-Soon Yeo , Chee-Keong Teo , John Julius Asuncion , Wai Keat Tai
发明人： Lian-Chun Xu , Kok-Soon Yeo , Chee-Keong Teo , John Julius Asuncion , Wai Keat Tai
IPC分类号： H04B10/06
CPC分类号： H03D1/18
摘要： A system and method for demodulating amplitude modulated input signals uses two comparators and a charge pump circuit, which is positioned between the two comparators, to produce a demodulated signal of an amplitude modulated input signal. The two comparators and the charge pump circuit form a demodulating unit that may be a part of an infrared remote control receiver. The first comparator converts the input signal from a waveform to a pulse form. The charge pump circuit then converts the pulse signal into an integrated signal in a triangular pulse form. The second comparator converts the integrated signal from a triangular pulse form to a rectangular pulse form to produce the demodulated signal.
摘要翻译：用于解调幅度调制输入信号的系统和方法使用位于两个比较器之间的两个比较器和电荷泵电路，以产生调幅输入信号的解调信号。两个比较器和电荷泵电路形成可以是红外遥控接收器的一部分的解调单元。第一个比较器将输入信号从波形转换为脉冲形式。然后，电荷泵电路将脉冲信号转换为三角形脉冲形式的积分信号。第二比较器将积分信号从三角形脉冲形式转换为矩形脉冲形式以产生解调信号。

2. 发明授权

US07265626B2 Fast-setting digital automatic gain control 失效
标题翻译：快速设置数字自动增益控制
公开(公告)号：US07265626B2
公开(公告)日：2007-09-04
申请号：US11312089
申请日：2005-12-20
申请人： Chee Keong Teo , Lian-Chun Xu , Kok-Soon Yeo , John Julius Asuncion , Wai Keat Tai
发明人： Chee Keong Teo , Lian-Chun Xu , Kok-Soon Yeo , John Julius Asuncion , Wai Keat Tai
IPC分类号： H03G3/10
CPC分类号： H03G3/001 , H03G1/0088
摘要： A fast-settling digital automatic gain control circuit comprises first and second gain-controllable amplifiers in series. Each amplifier can be digitally switched between minimum and maximum gains by control logic that receives inputs from a multi-level voltage comparator. A peak detector connected to the output of the first gain-controlled amplifier is used to set the overall operating ranges for several threshold detectors. Four reference voltages are generated from the peak detector. The highest reference voltage is used to clock and reset the gain control logic with a hysteresis comparator to the instantaneous input signal from the first gain-controlled amplifier. The three other lower reference voltages are used to provide three-bits of digital input data to the gain control logic. Two digital controls are output, a min/max gain bit for the first gain-controlled amplifier, and a similar min/max gain bit for the second gain-controlled amplifier.
摘要翻译：快速稳定的数字自动增益控制电路包括串联的第一和第二增益可控放大器。每个放大器可以通过从多电平电压比较器接收输入的控制逻辑在最小和最大增益之间进行数字切换。连接到第一增益控制放大器的输出端的峰值检测器用于设置多个阈值检测器的总体工作范围。从峰值检测器产生四个参考电压。最高参考电压用于使用滞后比较器对增益控制逻辑进行时钟并复位为来自第一增益控制放大器的瞬时输入信号。三个较低的参考电压用于向增益控制逻辑提供三位数字输入数据。输出两个数字控制，第一增益控制放大器的最小/最大增益位，以及第二增益控制放大器的类似最小/最大增益位。

3. 发明申请

US20070080741A1 Bandgap reference voltage circuit 有权
标题翻译：带隙参考电压电路
公开(公告)号：US20070080741A1
公开(公告)日：2007-04-12
申请号：US11244840
申请日：2005-10-06
申请人： Kok-Soon Yeo , Wai-Keat Tai
发明人： Kok-Soon Yeo , Wai-Keat Tai
IPC分类号： G05F1/10 , G05F3/02
CPC分类号： G05F3/30
摘要： A reference voltage circuit includes first circuitry that generates a thermal voltage that is approximately proportional to absolute temperature, a first voltage multiplier, second circuitry that generates an inverse thermal voltage that is approximately inversely proportional to absolute temperature, a second voltage multiplier and a summer. The first voltage multiplier multiplies the thermal voltage to obtain a first multiplied voltage. The multiplied voltage is not equal to the thermal voltage. The second voltage multiplier multiplies the inverse thermal voltage to obtain a second multiplied voltage. The summer sums the first multiplied voltage with the second multiplied voltage to obtain a reference voltage.
摘要翻译：参考电压电路包括产生大致与绝对温度成比例的热电压的第一电路，第一电压倍增器，产生与绝对温度近似成反比的反向热电压的第二电路，第二电压倍增器和夏季。第一电压倍增器将热电压倍增以获得第一倍增电压。倍增电压不等于热电压。第二电压倍增器乘以逆热电压以获得第二倍增电压。夏季将第一个乘法电压与第二个相乘电压相加，以获得参考电压。

4. 发明授权

US07187223B2 Comparator with hysteresis 有权
标题翻译：具有迟滞的比较器
公开(公告)号：US07187223B2
公开(公告)日：2007-03-06
申请号：US11057244
申请日：2005-02-14
申请人： Kok-Soon Yeo , Lian-Chun Xu , Chee-Keong Teo , John Julius de Leon Asuncion , Wai-Keat Tai
发明人： Kok-Soon Yeo , Lian-Chun Xu , Chee-Keong Teo , John Julius de Leon Asuncion , Wai-Keat Tai
IPC分类号： H03K3/00
CPC分类号： H03K5/2481 , H03K3/02337 , H03K3/3565
摘要： In one embodiment, a comparator is provided with a first differential input stage that receives an input voltage and a reference voltage and produces a first differential output, and a second differential input stage that has differential inputs and produces a second differential output. A comparator stage produces a comparator output in response to the first and second differential outputs. The comparator also has a hysteresis control circuit, the components of which include 1) a resistor and a hysteresis regulating voltage input, coupled between the differential inputs of the second differential input stage, 2) first and second current generators, and 3) at least one switch, under control of the comparator output, to alternately enable different combinations of the first and second current generators, thereby inducing a first or a second current through the resistor.
摘要翻译：在一个实施例中，比较器具有接收输入电压和参考电压并产生第一差分输出的第一差分输入级，以及具有差分输入并产生第二差分输出的第二差分输入级。比较器级响应于第一和第二差分输出产生比较器输出。比较器还具有一个迟滞控制电路，其组件包括1）耦合在第二差分输入级的差分输入之间的电阻器和滞后调节电压输入，2）第一和第二电流发生器，以及3）至少一个开关在比较器输出的控制下交替地使第一和第二电流发生器的组合不同，从而引起通过电阻器的第一或第二电流。

5. 发明申请

US20060081779A1 Variable noise control for an optical transducer 有权
标题翻译：用于光学传感器的可变噪声控制
公开(公告)号：US20060081779A1
公开(公告)日：2006-04-20
申请号：US10968564
申请日：2004-10-18
申请人： Kok-Soon Yeo , Lian-Chun Xu , Chee-Keong Teo , John Asuncion
发明人： Kok-Soon Yeo , Lian-Chun Xu , Chee-Keong Teo , John Asuncion
IPC分类号： G01J5/00
CPC分类号： H04B10/58
摘要： In one embodiment, an optical transducer, such as an infrared transducer, generates an output signal that is representative of optical irradiance. A noise control circuit is coupled in a power supply path of the optical transducer. A switching circuit varies the noise control provided by the noise control circuit, in response to changes in the output signal of the optical transducer. The noise control may be varied in a number of different ways, including: turning the noise control on or off, varying the noise control in discrete steps, or varying the noise control in a continuous manner. Methods for varying noise control in response to optical irradiance of an optical transducer are also disclosed.
摘要翻译：在一个实施例中，诸如红外换能器的光学换能器产生代表光学辐照度的输出信号。噪声控制电路耦合在光学换能器的电源路径中。响应于光学换能器的输出信号的变化，开关电路改变由噪声控制电路提供的噪声控制。噪声控制可以以多种不同的方式变化，包括：打开或关闭噪声控制，以离散步骤改变噪声控制，或以连续的方式改变噪声控制。还公开了响应于光学换能器的光学辐照而改变噪声控制的方法。

6. 发明申请

US20050182674A1 Charge approval and payment system 审中-公开
标题翻译：收费审批和付款系统
公开(公告)号：US20050182674A1
公开(公告)日：2005-08-18
申请号：US10513046
申请日：2003-04-29
申请人： Tae Soon Yeo
发明人： Tae Soon Yeo
IPC分类号： G06Q10/00 , G06Q20/00 , G06Q20/20 , G06Q20/22 , G06Q20/32 , G06Q20/34 , G06Q20/36 , G06Q20/42 , G06Q50/00 , G07B15/00 , G07B15/06 , G07F7/08 , G07F7/10 , H04B1/38 , G06F17/60
CPC分类号： G07F7/1008 , G06Q20/20 , G06Q20/223 , G06Q20/32 , G06Q20/322 , G06Q20/3223 , G06Q20/327 , G06Q20/341 , G06Q20/363 , G06Q20/42 , G07B15/063 , G07F7/0866 , G07F7/0886
摘要： A charge settlement system is capable of settling a charge, even during movement, without access to any card-inquiry terminal such as a magnetic credit card. The system is relatively inexpensive to construct and includes a transaction terminal and a portable wireless settlement device. When the transaction terminal requests a payment to the portable wireless settlement device via a communication network, the portable wireless settlement device accesses a server via a wireless communication network for settlement. The portable wireless settlement device includes wireless communication with a transaction terminal; a button section for payment and receipt; a key-entering section; a display device for displaying various kinds of information; and a controller having various types of data stored therein. Payment information is transmitted on a payment mechanism to the transaction terminal, and a payment-confirmation signal is transmitted for payment and receipt, to the transaction terminal via the wireless communication.
摘要翻译：收费结算系统即使在移动期间也能够解决费用，无需访问诸如磁性信用卡的任何卡片查询终端。该系统相对廉价地构造并且包括交易终端和便携式无线结算设备。当交易终端经由通信网络向便携式无线结算装置请求支付时，便携式无线结算装置经由无线通信网络访问服务器进行结算。便携式无线结算装置包括与交易终端的无线通信; 用于支付和接收的按钮部分; 键入部分; 用于显示各种信息的显示装置; 以及存储有各种数据的控制器。支付信息以支付机制发送到交易终端，并且通过无线通信向交易终端发送用于支付和接收的付款确认信号。

7. 发明授权

US10913503B2 Bike having automatic landing wheel apparatus 有权
公开(公告)号：US10913503B2
公开(公告)日：2021-02-09
申请号：US15575378
申请日：2016-04-29
申请人： Tae Soon Yeo
发明人： Tae Soon Yeo
IPC分类号： B62H1/12 , B62J17/08 , B62J27/00 , B62J17/04 , B62H1/02 , B62K25/04 , B62H1/14 , B62J99/00 , B62K19/46 , B62J17/086 , B62J45/00 , B62J45/20 , B62J45/40 , B62J50/16 , B62K13/00 , B62L3/04
摘要： A bike having an automatic landing wheel apparatus includes a left landing wheel arm on the left side of the bike to vertically move a left landing wheel rotatably coupled to the lower end portion thereof. A right landing wheel arm on the right side of the bike vertically moves a right landing wheel rotatably coupled to the lower end portion thereof. A left driving unit drives the left landing wheel arm to move the left landing wheel upward and downward. A right driving unit drives the right landing wheel arm to move the right landing wheel upward and downward. A speed detection unit detects the speed of the bike. A controller is connected with the speed detection unit, the left driving unit, and the right driving unit to move the left and right landing wheels upward or downward in response to the detected speed of the bike.

8. 发明授权

US10583881B2 Bike having expanded knife ski device 有权
公开(公告)号：US10583881B2
公开(公告)日：2020-03-10
申请号：US15575379
申请日：2016-04-29
申请人： Tae Soon Yeo
发明人： Tae Soon Yeo
IPC分类号： B62D61/04 , B62H1/12 , B62H1/14 , B62J17/04 , B62J17/08 , B62H1/02 , B62K25/04 , B62J99/00 , B62K13/00 , B62L3/04
摘要： A bike having an expanded knife ski device includes left and right landing wheel arms on the left and right portions of the bike, respectively. Left and right landing wheels are rotatably coupled to the lower end of the left and right landing wheel arm, respectively, to move the landing wheels up and down. Left and right driving units lift and lower the left and right landing wheels, respectively. Left and right ski mounting sockets are coupled to the left and right landing wheel arms, respectively. Left and right insertion members couple to the left and right ski mounting sockets, respectively. Left and right ski legs are integrally coupled to the left and right insertion members, respectively, to extend downwards. Left and right bike skis, which are hinge-coupled to the lower end of the left and right ski legs, respectively, each making a hinge movement about a left/right horizontal axis.

9. 发明申请

US20180154966A1 BIKE HAVING EXPANDED KNIFE SKI DEVICE 审中-公开
公开(公告)号：US20180154966A1
公开(公告)日：2018-06-07
申请号：US15575379
申请日：2016-04-29
申请人： Tae Soon YEO
发明人： Tae Soon YEO
IPC分类号： B62H1/14 , B62H1/02 , B62J17/08 , B62H1/12
摘要： The present invention relates to a bike having an expanded knife ski device. The bike having an expanded knife ski device according to the present invention comprises: a left landing wheel arm provided on the left portion of the bike, a left landing wheel being rotatably coupled to the lower end of the left landing wheel arm such that the left landing wheel can be moved up/down; a right landing wheel arm provided on the right portion of the bike, a right landing wheel being rotatably coupled to the lower end of the right landing wheel arm such that the right landing wheel can be moved up/down; a left driving unit for lifting/lowering the left landing wheel by driving the left landing wheel arm; a right driving unit for lifting/lowering the right landing wheel by driving the right landing wheel arm; a left ski mounting socket coupled to the left landing wheel arm; a right ski mounting socket coupled to the right landing wheel arm; a left insertion member detachably coupled to the left ski mounting socket; a right insertion member detachably coupled to the right ski mounting socket; a left ski leg integrally coupled to the left insertion member so as to extend downwards; a right ski leg integrally coupled to the right insertion member so as to extend downwards; a left bike ski, which is hinge-coupled to the lower end of the left ski leg to be able to make a hinge movement about a left/right horizontal axis, which extends in the forward/backward direction, and which has blades formed on the left and right ends, respectively; and a right bike ski, which is hinge-coupled to the lower end of the right ski leg to be able to make a hinge movement about the left/right horizontal axis, which extends in the forward/backward direction, and which has blades formed on the left and right ends, respectively.

10. 发明申请

US20070018685A1 Multi-stage light emitting diode driver circuit 失效
公开(公告)号：US20070018685A1
公开(公告)日：2007-01-25
申请号：US11186753
申请日：2005-07-22
申请人： Wai Tai , Kok-Soon Yeo , Chee-Keong Teo , John De Leon Asuncion , Lian-Chun Xu
发明人： Wai Tai , Kok-Soon Yeo , Chee-Keong Teo , John De Leon Asuncion , Lian-Chun Xu
IPC分类号： H03K19/094
CPC分类号： H03K19/00315 , H03K19/0013
摘要： A multi-stage light emitting diode (LED) driver circuit is provided. The circuit includes a driver transistor coupled to an LED. The LED is coupled at a drain of the driver transistor and the driver transistor drives current to the LED. A first transistor stack is coupled between a gate of the driver transistor and ground. A first inverter stage is coupled to a common gate of the first transistor stack. The first inverter stage is further coupled between a high voltage source and ground. A second inverter stage is coupled to a common gate of the first inverter stage. The second inverter stage is further coupled between the high voltage source and ground. The circuit further includes a first transistor coupled between the high voltage source and gate of the driver transistor. The gate of the transistor is coupled to the first inverter stage.

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