专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20080204413A1 OPERATION METHOD OF WIRELESS POINTING INPUT APPARATUS 审中-公开
标题翻译：无线点式输入装置的操作方法
公开(公告)号：US20080204413A1
公开(公告)日：2008-08-28
申请号：US11679187
申请日：2007-02-27
申请人： Hsin-Ju Wu , Hung-Mao Chang , Hisn-Ling Chu , Albert Chen
发明人： Hsin-Ju Wu , Hung-Mao Chang , Hisn-Ling Chu , Albert Chen
IPC分类号： G06F3/033
CPC分类号： G06F3/0383
摘要： An operation method of a wireless pointing input apparatus is provided. The operation method includes following steps. The displacement vector of the wireless pointing input apparatus is detected with a resolution. The displacement vector of the wireless pointing input apparatus is transmitted to a host in a wireless way every a time interval. The time interval is decreased correspondingly if the resolution is increased. Or, the time interval is increased correspondingly if the resolution is decreased.
摘要翻译：提供了一种无线指向输入装置的操作方法。操作方法包括以下步骤。以分辨率检测无线指示输入装置的位移矢量。无线指示输入装置的位移矢量每隔一段时间以无线方式发送给主机。如果分辨率增加，则时间间隔相应降低。或者，如果分辨率降低，则时间间隔相应地增加。

12. 发明申请

US20070268875A1 Role exchange method for Bluetooth system 审中-公开
标题翻译：蓝牙系统角色交换方式
公开(公告)号：US20070268875A1
公开(公告)日：2007-11-22
申请号：US11434235
申请日：2006-05-16
申请人： Chung-I Lee , Yao-Chun Yu , Albert Chen
发明人： Chung-I Lee , Yao-Chun Yu , Albert Chen
IPC分类号： H04Q7/24 , H04J3/16
CPC分类号： H04W84/20
摘要： The present invention discloses a role exchange method for Bluetooth system. It comprises the steps of: a first slave asking role exchange and transmitting a FHS packet to a first master at a first time point t1; the first master exchanging as a second slave at the second time point t2; the first slave re-transmitting a plurality of FHS packet; and the first slave exchanging as a second master automatically. The role exchange method according to the present invention can solve the failure problem of role exchange procedure due to the noise in the conventional Bluetooth scheme.
摘要翻译：本发明公开了一种蓝牙系统的角色交换方法。它包括以下步骤：第一从站询问角色交换并在第一时间点t 1向第一主站发送FHS分组; 第一主机在第二时间点t 2作为第二从机交换; 所述第一从机重发多个FHS分组; 并且第一个从站自动交换为第二个主站。根据本发明的角色交换方法可以解决常规蓝牙方案中由于噪声引起的角色交换过程的失败问题。

13. 发明授权

US08437427B2 Arbitrary frequency shifter in communication systems 有权
标题翻译：通信系统中任意移频器
公开(公告)号：US08437427B2
公开(公告)日：2013-05-07
申请号：US12569290
申请日：2009-09-29
申请人： Jeng-Hong Chen
发明人： Jeng-Hong Chen
IPC分类号： H03K9/00 , H04L27/001
CPC分类号： G06F1/022 , G06F1/0342
摘要： This invention describes a programmable, digital implementation to shift an arbitrary frequency, or various frequencies in various communication systems of the original signal in the frequency domain. The correspondent phase accumulation to perform the desired frequency shift per sampling instant is perfectly tracked by counting up or down a simple integer. Several arbitrary frequency shifters with different mathematical models are provided. The correspondent implementations with Look-Up-Tables (LUT) are derived for high-speed implementations without further calculations of the values of the sine and cosine functions every sampling instant. Furthermore, a simple shift-and-add phase rotation is described to replace the four required real multiplications. If the original complex signal contains only one-bit each from real part and imaginary part, a surprisingly simple implementation is derived and disclosed for the overall arbitrary frequency shift operation. Further simplifications are also disclosed to make this invention feasible for high sampling frequencies and small frequency drifts.
摘要翻译：本发明描述了一种可编程的数字实现，以在频域中移动原始信号的各种通信系统中的任意频率或各种频率。通过向上或向下计数一个简单的整数来完美地跟踪每个采样时刻执行所需频移的通讯相位累加。提供了具有不同数学模型的几个任意频率移位器。具有查找表（LUT）的通信实现被导出用于高速实现，而不需要在每个采样时刻进一步计算正弦和余弦函数的值。此外，描述了简单的移位和加法相位旋转来代替四个所需的实数乘法。如果原始复信号仅包含来自实部和虚部的一位，则导出并公开了用于总体任意频移操作的令人惊讶的简单实现。还公开了进一步简化以使本发明对于高采样频率和小的频率漂移是可行的。

14. 发明授权

US08036298B2 Apparatus and method of error vector measurement for digital and multiple-input multiple output IMO communication systems 有权
标题翻译：数字和多输入多输出IMO通信系统的误差矢量测量装置和方法
公开(公告)号：US08036298B2
公开(公告)日：2011-10-11
申请号：US11971095
申请日：2008-01-08
申请人： Pansop Kim , Jeng-Hong Chen
发明人： Pansop Kim , Jeng-Hong Chen
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04L1/0025 , H04L1/0003 , H04L1/0009 , H04L1/0015 , H04L1/0026 , H04L1/0031 , H04L1/20 , H04L27/38
摘要： The present invention discloses an effective apparatus and method to measure the received signal quality for digital communication systems by measuring error vector measurement (EVM) with embedded EVM measurement block in receivers. The distinction of the present invention is that the EVMSIG and the EVMDATA are measured in the receiver for the SIGNAL fields and DATA fields, respectively. EVMSIG is a good indicator for one spatial stream and EVMDATA is a good indicator for current multiple streams. The receiver determines the optimum number of spatial data streams for feedback to the transmitter based on the combinations of EVMSIG and EVMDATA with or without other algorithms such as analysis on periodically requested sounding packet. The receiver also determines the optimum modulation and coding schemes for feedback based on the EVM measurements.
摘要翻译：本发明公开了一种通过用接收机中的嵌入式EVM测量块测量误差矢量测量（EVM）来测量数字通信系统的接收信号质量的有效装置和方法。本发明的区别在于分别在信号字段和数据字段的接收机中测量EVMSIG和EVMDATA。 EVMSIG是一个空间流的良好指标，EVMDATA是当前多个流的一个很好的指标。基于EVMSIG和EVMDATA的组合，接收机确定用于反馈到发射机的空间数据流的最佳数量，其中有或没有其他算法，例如周期性请求的探测分组的分析。接收机还基于EVM测量确定用于反馈的最佳调制和编码方案。

15. 发明申请

US20110090991A1 METHOD AND APPARATUS FOR PHASE REFERENCE TRACKING OF DIGITAL PHASE MODULATED SIGNALS IN THE RECEIVER 有权
标题翻译：用于接收器中数字相位调制信号的相位参考跟踪的方法和装置
公开(公告)号：US20110090991A1
公开(公告)日：2011-04-21
申请号：US12581607
申请日：2009-10-19
申请人： Pansop KIM , Jeng-Hong Chen , Hsin-Hsiang Liu
发明人： Pansop KIM , Jeng-Hong Chen , Hsin-Hsiang Liu
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H04L27/2277 , H04L2027/0032 , H04L2027/0061 , H04L2027/0067
摘要： The present invention discloses a method and apparatus to provide, effectively and robustly, a phase reference in phase-domain for digital phase-modulated signals. Not only the first-order but also higher order PLLs are delineated for robust and fast tracking of frequency errors and time-varying frequency errors between the transmitter and the receiver. This invention can be applied to any phase-modulated signal such as PSK, DPSK, π/4-DPSK, and CPM. The decoders with this invention can achieve close to the performance of coherent detection.Reference [1] D. Divsalar and M. K. Simon, “Multiple-symbols differential detection of MPSK,” IEEE Trans. Commun., vol. 38, pp. 300-308, March 1990. [2] Specification of the Bluetooth System, 2.0+EDR, 4 Nov. 2004
摘要翻译：本发明公开了一种在数字相位调制信号的相域中有效且鲁棒地提供相位参考的方法和装置。不仅描述了一阶但是更高阶的PLL，以便在发射机和接收机之间的频率误差和时变频率误差的鲁棒和快速跟踪。本发明可以应用于诸如PSK，DPSK，＆amp; / 4-DPSK和CPM之类的任何相位调制信号。本发明的解码器可以实现接近相干检测的性能。参考文献[1] D. Divsalar和M.K.Simon，“Multiple-symbols differential detection of MPSK”，IEEE Trans。 Commun。，vol。 38，pp。300-308，March 1990. [2]蓝牙系统规范，2.0 + EDR，2004年11月4日

16. 发明申请

US20090225727A1 GENERATING METHOD FOR SHORT TRAINING FIELD IN IEEE 802.11N COMMUNICATION SYSTEMS 有权
标题翻译： IEEE 802.11N通信系统中短期培训的生成方法
公开(公告)号：US20090225727A1
公开(公告)日：2009-09-10
申请号：US12043722
申请日：2008-03-06
申请人： Jeng-Hong CHEN
发明人： Jeng-Hong CHEN
IPC分类号： H04B7/212
CPC分类号： H04W28/06 , H04W84/12
摘要： The present invention discloses a generating method for short training field in IEEE 802.11n communication systems, mainly comprising the steps of: storing only a first set of time-domain HT-STF sequences in the memory; and deriving a second set of the time-domain HT-STF sequences from the first set of the time-domain HT-STF sequences. The first set of time-domain HT-STF sequences is the time-domain HT-STF sequences either for lower 20 MHz of 40 MHz BW or upper 20 MHz of 40 MHz BW. According to the invention, it is shown that only one set of time-domain HT-STF sequence needs to be stored in the memory. The other three sets of time-domain HT-STF sequence can be generated easily from simple calculation. Therefore, the saving in buffer size to implement all four configurations is significant.
摘要翻译：本发明公开了一种IEEE 802.11n通信系统中短训练场的生成方法，主要包括以下步骤：在存储器中仅存储第一组时域HT-STF序列; 以及从第一组时域HT-STF序列导出第二组时域HT-STF序列。第一组时域HT-STF序列是用于40MHz BW的较低20MHz或40MHz BW的高于20MHz的时域HT-STF序列。根据本发明，显示只有一组时域HT-STF序列需要存储在存储器中。其他三组时域HT-STF序列可以从简单的计算中轻松生成。因此，实现所有四种配置的缓冲区大小的节省是很重要的。

17. 发明申请

US20080209083A1 POWER SAVING METHOD OF BI-DIRECTIONAL COMMUNICATION WIRELESS PERIPHERAL DEVICE 有权
标题翻译：双向通信无线外围设备的节能方法
公开(公告)号：US20080209083A1
公开(公告)日：2008-08-28
申请号：US11755005
申请日：2007-05-30
申请人： Hsin-Ju Wu , Dar-chern Su , Albert Chen
发明人： Hsin-Ju Wu , Dar-chern Su , Albert Chen
IPC分类号： G06F3/00 , G06F1/32
CPC分类号： G06F1/3203 , G06F1/325
摘要： A power saving method of a bi-directional communication wireless peripheral device includes providing a wireless communication protocol between a host and the bi-directional communication wireless peripheral device; establishing a bi-directional communication wireless link between the host and the bi-directional communication wireless peripheral device through the wireless communication protocol; and enter a power off mode when the bi-directional communication wireless link does not exist.
摘要翻译：双向通信无线外围设备的省电方法包括在主机与双向通信无线外围设备之间提供无线通信协议; 通过无线通信协议在主机和双向通信无线外围设备之间建立双向通信无线链路; 并且当双向通信无线链路不存在时进入断电模式。

18. 发明授权

US07330522B2 Complementary code keying (CCK) sequentially decoding apparatus and process thereof 有权
标题翻译：互补码密钥（CCK）顺序解码装置及其处理
公开(公告)号：US07330522B2
公开(公告)日：2008-02-12
申请号：US10819319
申请日：2004-04-07
申请人： Chen-Yen Huang , Kuang-Ping Ma , Chun-Chang Lin , Albert Chen
发明人： Chen-Yen Huang , Kuang-Ping Ma , Chun-Chang Lin , Albert Chen
IPC分类号： H04L27/00 , H04B1/00 , G06F17/15 , G06F17/10
CPC分类号： H04L27/34
摘要： An apparatus of sequentially decoding CCK codes includes a series of received signal registers used to respectively temporarily save the received signals, a phase selector used to select one numeral from 1, −1, j or −j respectively for CCK code of each chip to multiple with the signal register, a series of adders used to sequentially complete adding operation, a series of sequential operation registers used to save values obtained from the sequential selecting operation of the phase selectors and the sequential adding operation of the adders, and a comparing device used to select a maximal value from those saved in the operation registers. The comparing device includes a comparator and a maximum register. According to the invention, the data processing speeds up while the hardware complexity is reduced.
摘要翻译：顺序地解码CCK码的装置包括用于分别暂时保存接收信号的一系列接收信号寄存器，一个相位选择器，用于分别从1，-1，j或-j中选择一个数字，用于每个码片的CCK码到多个使用信号寄存器，用于顺序地完成添加操作的一系列加法器，用于保存从相位选择器的顺序选择操作获得的值和加法器的顺序添加操作的一系列顺序操作寄存器，以及使用的比较器件从存储在操作寄存器中的值中选择最大值。比较装置包括比较器和最大寄存器。根据本发明，数据处理在硬件复杂度降低的同时加快。

19. 发明申请

US20070282471A1 Bluetooth audio chip with multiple input/output sources 审中-公开
标题翻译：具有多个输入/输出源的蓝牙音频芯片
公开(公告)号：US20070282471A1
公开(公告)日：2007-12-06
申请号：US11444477
申请日：2006-06-01
申请人： Chung-I Lee , Sheng-Ming Chang , Shyh-Ming Huang , Albert Chen
发明人： Chung-I Lee , Sheng-Ming Chang , Shyh-Ming Huang , Albert Chen
IPC分类号： G06F17/00
CPC分类号： G06F3/162
摘要： A Bluetooth audio chip with multiple input/output sources is implemented on a monolithic integrated circuit. The Bluetooth audio chip includes a Bluetooth Baseband/RF module, an encode/decode module, a stereo ADC/DAC codec module, a USB module, a UART module, and a flash memory. Each one of the modules receives/transmits one kind of audio source, thus the Bluetooth audio chip has deeply embedded with multiple input/output sources. The Bluetooth audio chip is used in a diversity of applications to reduce the cost and time comparing to one purpose chip for just only one specific application.
摘要翻译：具有多个输入/输出源的蓝牙音频芯片在单片集成电路上实现。蓝牙音频芯片包括蓝牙基带/ RF模块，编码/解码模块，立体声ADC / DAC编解码器模块，USB模块，UART模块和闪存。每个模块都接收/发送一种音频源，因此蓝牙音频芯片已深入嵌入多个输入/输出源。蓝牙音频芯片用于多种应用中，以便与仅一个特定应用的一个用途芯片相比，可以降低成本和时间。

20. 发明授权

US07012484B2 Filter using multilayer ceramic technology and structure thereof 有权
标题翻译：过滤器采用多层陶瓷技术及其结构
公开(公告)号：US07012484B2
公开(公告)日：2006-03-14
申请号：US10831318
申请日：2004-04-26
申请人： Sheng-Fuh Chang , Yng-Huey Jeng
发明人： Sheng-Fuh Chang , Yng-Huey Jeng
IPC分类号： H01P1/203
CPC分类号： H01P1/20345 , H03H7/0123 , H03H7/1758 , H03H7/1775
摘要： The present invention discloses a filter using multilayer ceramic technology. The filter comprises an input port, an output port, a first lumped resonator and a first step-impedance resonator connected to the input port, a second lumped resonator and a second step-impedance resonator connected to the output port, a coupling capacitor used for the coupling of the first lumped resonator and the first step-impedance resonator to the second lumped resonator and the second step-impedance resonator. The filter according to the present invention can provide the multi-transmission zeros in the stopband to isolate the adjacent channel and suppress the harmonics, and provide the transmission poles in the passband to have lower insertion loss. In addition, a manufacturing method for the filter using multilayer ceramic technology is also disclosed.
摘要翻译：本发明公开了一种使用多层陶瓷技术的过滤器。滤波器包括输入端口，输出端口，第一集总谐振器和连接到输入端口的第一阶梯式阻抗谐振器，连接到输出端口的第二集总谐振器和第二级阻抗谐振器，用于将第一集总谐振器和第一阶梯阻抗谐振器耦合到第二集总谐振器和第二阶阻抗谐振器。根据本发明的滤波器可以在阻带中提供多传输零点，以隔离相邻信道并抑制谐波，并且提供通带中的传输极具有较低的插入损耗。此外，还公开了使用多层陶瓷技术的过滤器的制造方法。

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