专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20090220219A1 Delta-Sigma Modulator for a Fan Driver 有权
标题翻译：用于风扇驱动器的Delta-Sigma调制器
公开(公告)号：US20090220219A1
公开(公告)日：2009-09-03
申请号：US12040554
申请日：2008-02-29
申请人： Scott C. McLeod , Chao-Ming Tsai
发明人： Scott C. McLeod , Chao-Ming Tsai
IPC分类号： H02P7/285
CPC分类号： H02P7/285
摘要： A fan driver circuit for powering a fan with a linear voltage may be designed using digital design techniques, resulting in a testable, accurate circuit on a smaller die size. The fan driver circuit may be configured to receive a digital control signal, which may be a sequence of numeric values, e.g. multiple-bit binary numbers, each indicative of a desired present rotational speed of the fan. The fan driver circuit may be implemented using a digital modulator, e.g. a delta-sigma modulator, with a simple low-pass filter, e.g. an RC-filter at the output, and may use oversampling based on a system clock, to shift in-band noise to out-of-band frequencies, and digital interpolation to filter out unwanted images from the upsampled digital control signal. The delta-sigma modulator may be constructed as a first-order delta-sigma modulator using an error-feedback structure to reduce die size.
摘要翻译：可以使用数字设计技术设计用于为线性电压供电的风扇的风扇驱动器电路，从而在较小的管芯尺寸上产生可测试的精确电路。风扇驱动器电路可以被配置为接收数字控制信号，数字控制信号可以是数字序列的序列，例如。多位二进制数，每个指示风扇的期望的当前转速。风扇驱动器电路可以使用数字调制器来实现，例如，具有简单的低通滤波器的Δ-Σ调制器，例如。输出端的RC滤波器，并且可以使用基于系统时钟的过采样来将带内噪声移位到带外频率，以及数字内插以从上采样的数字控制信号滤除不需要的图像。 Δ-Σ调制器可以被构造为使用误差反馈结构来减小管芯尺寸的一阶Δ-Σ调制器。

2. 发明授权

US07863849B2 Delta-sigma modulator for a fan driver 有权
标题翻译：用于风扇驱动器的Delta-Σ调制器
公开(公告)号：US07863849B2
公开(公告)日：2011-01-04
申请号：US12040554
申请日：2008-02-29
申请人： Scott C. McLeod , Chao-Ming Tsai
发明人： Scott C. McLeod , Chao-Ming Tsai
IPC分类号： G05B19/29
CPC分类号： H02P7/285
摘要： A fan driver circuit for powering a fan with a linear voltage may be designed using digital design techniques, resulting in a testable, accurate circuit on a smaller die size. The fan driver circuit may be configured to receive a digital control signal, which may be a sequence of numeric values, e.g. multiple-bit binary numbers, each indicative of a desired present rotational speed of the fan. The fan driver circuit may be implemented using a digital modulator, e.g. a delta-sigma modulator, with a simple low-pass filter, e.g. an RC-filter at the output, and may use oversampling based on a system clock, to shift in-band noise to out-of-band frequencies, and digital interpolation to filter out unwanted images from the upsampled digital control signal. The delta-sigma modulator may be constructed as a first-order delta-sigma modulator using an error-feedback structure to reduce die size.
摘要翻译：可以使用数字设计技术设计用于为线性电压供电的风扇的风扇驱动器电路，从而在较小的管芯尺寸上产生可测试的精确电路。风扇驱动器电路可以被配置为接收数字控制信号，数字控制信号可以是数字序列的序列，例如。多位二进制数，每个指示风扇的期望的当前转速。风扇驱动器电路可以使用数字调制器来实现，例如，具有简单的低通滤波器的Δ-Σ调制器，例如。输出端的RC滤波器，并且可以使用基于系统时钟的过采样来将带内噪声移位到带外频率，以及数字内插以从上采样的数字控制信号滤除不需要的图像。 Δ-Σ调制器可以被构造为使用误差反馈结构来减小管芯尺寸的一阶Δ-Σ调制器。

3. 发明申请

US20100215510A1 RPM Controller Using Drive Profiles 有权
标题翻译： RPM控制器使用驱动器配置文件
公开(公告)号：US20100215510A1
公开(公告)日：2010-08-26
申请号：US12393571
申请日：2009-02-26
申请人： Chao-Ming Tsai , Lynn R. Kern
发明人： Chao-Ming Tsai , Lynn R. Kern
IPC分类号： F04D27/00
CPC分类号： F04D27/00
摘要： A control circuit for controlling the rotational speed of a fan may include a memory element to store operating data corresponding to an operational profile of the fan defined by RPM (revolutions per minute) versus temperature, with the operating data comprising a respective temperature value and a respective RPM value for each respective operating point representing a change in slope of a function that corresponds to the operational profile of the fan. A processing unit may operate to receive a present temperature value, retrieve the operating data from the storage unit, and identify a pair of consecutive operating points such that the present temperature value is greater than a lower respective temperature value of the pair of consecutive operating points, and lower than a higher respective temperature value of the pair of consecutive operating points. The processing unit may calculate a desired RPM value corresponding to the present temperature value by performing linear interpolation between the pair of consecutive operating points, and output the desired RPM value to a closed-loop fan controller configured to control a rotational speed of the fan according at least to the desired RPM value.
摘要翻译：用于控制风扇的转速的控制电路可以包括存储元件，用于存储与由RPM（每分钟转数）相对于温度定义的风扇的操作分布相对应的操作数据，其中操作数据包括相应的温度值和每个相应的工作点的相应的RPM值表示与风扇的操作轮廓对应的功能的斜率的变化。处理单元可以操作以接收当前温度值，从存储单元检索操作数据，并且识别一对连续的操作点，使得当前温度值大于该对连续工作点的较低相应温度值，并且低于该对连续工作点的相应温度值的较高值。处理单元可以通过在一对连续的操作点之间进行线性插值来计算与当前温度值对应的期望的RPM值，并将期望的RPM值输出到闭环风扇控制器，该闭环风扇控制器被配置为根据至少达到所需的RPM值。

4. 发明授权

US09212664B2 RPM controller using drive profiles 有权
标题翻译： RPM控制器使用驱动器配置文件
公开(公告)号：US09212664B2
公开(公告)日：2015-12-15
申请号：US13549600
申请日：2012-07-16
申请人： Chao-Ming Tsai , Lynn R. Kern
发明人： Chao-Ming Tsai , Lynn R. Kern
IPC分类号： F04D27/00 , G05B13/02
CPC分类号： F04D27/00
摘要： A control circuit for controlling the rotational speed of a fan may include a memory element to store operating data corresponding to an operational profile of the fan defined by RPM (revolutions per minute) versus temperature, with the operating data comprising a respective temperature value and a respective RPM value for each respective operating point representing a change in slope of a function that corresponds to the operational profile of the fan. A processing unit may receive a present temperature value, retrieve the operating data from the storage unit, and identify a pair of consecutive operating points corresponding to the present temperature. The processing unit may calculate a desired RPM value corresponding to the present temperature value by performing linear interpolation between the pair of consecutive operating points, and provide the desired RPM value to a closed-loop fan controller to control the fan according to the desired RPM value.
摘要翻译：用于控制风扇的转速的控制电路可以包括存储元件，用于存储与由RPM（每分钟转数）相对于温度定义的风扇的操作分布相对应的操作数据，其中操作数据包括相应的温度值和每个相应的工作点的相应的RPM值表示与风扇的操作轮廓对应的功能的斜率的变化。处理单元可以接收当前温度值，从存储单元检索操作数据，并且识别对应于当前温度的一对连续工作点。处理单元可以通过在一对连续的操作点之间进行线性内插来计算与当前温度值对应的期望的RPM值，并且向闭环风扇控制器提供期望的RPM值以根据期望的RPM值来控制风扇。

5. 发明申请

US20120330464A1 RPM Controller Using Drive Profiles 有权
标题翻译： RPM控制器使用驱动器配置文件
公开(公告)号：US20120330464A1
公开(公告)日：2012-12-27
申请号：US13549600
申请日：2012-07-16
申请人： Chao-Ming Tsai , Lynn R. Kern
发明人： Chao-Ming Tsai , Lynn R. Kern
IPC分类号： F04D27/00 , G05B13/02
CPC分类号： F04D27/00
摘要： A control circuit for controlling the rotational speed of a fan may include a memory element to store operating data corresponding to an operational profile of the fan defined by RPM (revolutions per minute) versus temperature, with the operating data comprising a respective temperature value and a respective RPM value for each respective operating point representing a change in slope of a function that corresponds to the operational profile of the fan. A processing unit may receive a present temperature value, retrieve the operating data from the storage unit, and identify a pair of consecutive operating points corresponding to the present temperature. The processing unit may calculate a desired RPM value corresponding to the present temperature value by performing linear interpolation between the pair of consecutive operating points, and provide the desired RPM value to a closed-loop fan controller to control the fan according to the desired RPM value.
摘要翻译：用于控制风扇的转速的控制电路可以包括存储元件，用于存储与由RPM（每分钟转数）相对于温度定义的风扇的操作分布相对应的操作数据，其中操作数据包括相应的温度值和每个相应的工作点的相应的RPM值表示与风扇的操作轮廓对应的功能的斜率的变化。处理单元可以接收当前温度值，从存储单元检索操作数据，并且识别对应于当前温度的一对连续工作点。处理单元可以通过在一对连续的操作点之间进行线性内插来计算与当前温度值对应的期望的RPM值，并且向闭环风扇控制器提供期望的RPM值以根据期望的RPM值来控制风扇。

6. 发明授权

US06882136B2 Variable impedance network for an integrated circuit potentiometer 失效
标题翻译：用于集成电路电位器的可变阻抗网络
公开(公告)号：US06882136B2
公开(公告)日：2005-04-19
申请号：US10854657
申请日：2004-05-26
申请人： Hagop A. Nazarian , William Tang , Zhan Duan , Chao-Ming Tsai , Lawrence D. Engh
发明人： Hagop A. Nazarian , William Tang , Zhan Duan , Chao-Ming Tsai , Lawrence D. Engh
IPC分类号： H03H11/24 , H03M1/80 , H02J3/12
CPC分类号： H03M1/808 , H03H11/245
摘要： An impedance network, which includes at least one end terminal, a wiper terminal, a center impedance element, and a first plurality of impedance elements. The wiper terminal provides a tap position at a selected impedance value of the impedance network, selectable at a specified increment value. The first plurality of impedance elements is configured to reduce resistance variation during switching from one tap position to another tap position. The first plurality of impedance element is connected in series in a mirrored configuration about the center impedance element.
摘要翻译：阻抗网络，其包括至少一个端子端子，擦拭器端子，中心阻抗元件和第一多个阻抗元件。抽头端子以阻抗网络的选定阻抗值提供抽头位置，可以以指定的增量值进行选择。第一组多个阻抗元件被配置为在从一个分接位置切换到另一分接头位置时降低电阻变化。第一组多个阻抗元件以关于中心阻抗元件的镜像配置串联连接。

7. 发明授权

US06788042B2 Variable impedance network for an integrated circuit potentiometer 失效
标题翻译：用于集成电路电位器的可变阻抗网络
公开(公告)号：US06788042B2
公开(公告)日：2004-09-07
申请号：US10102117
申请日：2002-03-20
申请人： Hagop A. Nazarian , William Tang , Zhan Duan , Chao-Ming Tsai , Lawrence D. Engh
发明人： Hagop A. Nazarian , William Tang , Zhan Duan , Chao-Ming Tsai , Lawrence D. Engh
IPC分类号： H02J312
CPC分类号： H03M1/808 , H03H11/245
摘要： An impedance network, which includes at least one end terminal, a wiper terminal, a center impedance element, and a first plurality of impedance elements. The wiper terminal provides a tap position at a selected impedance value of the impedance network, selectable at a specified increment value. The first plurality of impedance elements is configured to reduce resistance variation during switching from one tap position to another tap position. The first plurality of impedance elements is connected in series in a mirrored configuration about the center impedance element.
摘要翻译：阻抗网络，其包括至少一个端子端子，擦拭器端子，中心阻抗元件和第一多个阻抗元件。抽头端子以阻抗网络的选定阻抗值提供抽头位置，可以以指定的增量值进行选择。第一组多个阻抗元件被配置为在从一个分接位置切换到另一分接头位置时降低电阻变化。第一组多个阻抗元件以关于中心阻抗元件的镜像配置串联连接。

8. 发明授权

US06207157B1 Conjugate vaccine for nontypeable Haemophilus influenzae 失效
标题翻译：不可分型流感嗜血杆菌的共轭疫苗
公开(公告)号：US06207157B1
公开(公告)日：2001-03-27
申请号：US08842409
申请日：1997-04-23
申请人： Xin-Xing Gu , Chao-Ming Tsai , David J. Lim , John B. Robbins
发明人： Xin-Xing Gu , Chao-Ming Tsai , David J. Lim , John B. Robbins
IPC分类号： A61K3900
CPC分类号： A61K39/102 , A61K2039/6037 , Y10S435/851
摘要： A conjugate vaccine for Nontypeable Haemophilus influenzae comprising lipooligosaccharide from which esterified fatty acids have been removed conjugated to an immunogenic carrier. The vaccine is useful for prevention of otitis media and respiratory infections in mammals.
摘要翻译：用于不可分型流感嗜血杆菌的结合疫苗，其包含已除去已酯化脂肪酸的脂寡糖，与免疫原性载体结合。该疫苗可用于预防中耳炎和哺乳动物的呼吸道感染。

9. 发明授权

US06531131B1 Conjugate vaccine for Neisseria meningitidis 有权
标题翻译：脑膜炎奈瑟球菌的共轭疫苗
公开(公告)号：US06531131B1
公开(公告)日：2003-03-11
申请号：US09626003
申请日：2000-07-26
申请人： Xin-Xing Gu , Chao-Ming Tsai
发明人： Xin-Xing Gu , Chao-Ming Tsai
IPC分类号： A61K39385
CPC分类号： A61K39/095 , A61K2039/6037
摘要： A conjugate vaccine for Neisseria meningitidis comprising lipooligosaccharide which does not contain a lacto-N-tetraose antigen from which at least one primary O-linked fatty acid has been removed conjugated to an immunogenic carrier. The vaccine is useful for prevention of meningitis and septic shock in mammals.
摘要翻译：包含脑膜炎奈瑟氏球菌的共轭疫苗，其包含不含乳-N-去甲糖抗原的脂寡糖，其中已除去至少一种主要O-连接的脂肪酸与免疫原性载体结合。该疫苗可用于预防哺乳动物的脑膜炎和败血性休克。

10. 发明授权

US6060953A PLL response time accelerating system using a frequency detector counter 失效
标题翻译： PLL响应时间加速系统使用频率检测器计数器
公开(公告)号：US6060953A
公开(公告)日：2000-05-09
申请号：US57232
申请日：1998-04-08
申请人： Chao-Ming Tsai
发明人： Chao-Ming Tsai
IPC分类号： H03L7/087 , H03L7/089 , H03L7/095 , H03L7/181
CPC分类号： H03L7/095 , H03L7/087 , H03L7/0895 , H03L7/181
摘要： A PLL response time is accelerated with a frequency detector counter. The PLL utilizes both a phase frequency detector and the frequency detector counter. Initially, the operation of the PLL is controlled by the frequency detector counter and the output of phase frequency detector does not affect the PLL system. During this period, the PLL synchronizes to an input clock frequency. After the PLL reaches a predetermined frequency range, the frequency detector counter stops working. Thereafter, the phase frequency detector controls the operation of the PLL. During this period, the PLL synchronizes to both the frequency and the phase of the input signal.
摘要翻译： PLL响应时间用频率检测器计数器加速。 PLL利用相位频率检测器和频率检测器计数器。最初，PLL的操作由频率检测器计数器控制，相位检波器的输出不影响PLL系统。在此期间，PLL与输入时钟频率同步。在PLL达到预定频率范围后，频率检测器计数器停止工作。此后，相位频率检测器控制PLL的操作。在此期间，PLL与输入信号的频率和相位同步。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式