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1. 发明授权

US5734680A Analog implementation of a partial response maximum likelihood (PRML) read channel 失效
标题翻译：部分响应最大似然（PRML）读通道的模拟实现
公开(公告)号：US5734680A
公开(公告)日：1998-03-31
申请号：US513188
申请日：1995-08-09
申请人： Charles E. Moore , Richard A. Baumgartner , Travis N. Blalock , Thomas M. Walley , Robert A. Zimmer , Rajeev Badyal , Li Ching Tsai , Larry S. Metz , Sui-Hing Leung , James S. Ignowski , Kenneth R. Stafford , Ran-Fun Chiu , Richard A. Baugh
发明人： Charles E. Moore , Richard A. Baumgartner , Travis N. Blalock , Thomas M. Walley , Robert A. Zimmer , Rajeev Badyal , Li Ching Tsai , Larry S. Metz , Sui-Hing Leung , James S. Ignowski , Kenneth R. Stafford , Ran-Fun Chiu , Richard A. Baugh
IPC分类号： G11B5/09 , G11B20/10 , H04L5/12
CPC分类号： G11B5/09 , G11B20/10009
摘要： An analog, fully integrated, partial response maximum likelihood (PRML) read channel utilizing a high-performance analog delay line, an analog adaptive equalizer and an analog Viterbi detector is provided, resulting in saved space, performance gains, and lower power consumption. For signal detection and reconstruction used in read operations, the partial response maximum likelihood (PRML) read channel includes a variable gain amplifier coupled to a lowpass filter for input to an adaptive analog equalizer. The adaptive analog equalizer comprises an analog delay line and an analog feedforward equalizer (FFE). An analog Viterbi detector employs maximum-likelihood sequence estimation (MLSE) techniques to performs the signal detection function. A decoder/descrambler produces a final reconstructed signal. The analog implementation of a partial response maximum likelihood (PRML) read channel also includes a scrambler/encoder coupled to a write precompensation circuit for output to a separate write head.
摘要翻译：提供了利用高性能模拟延迟线的模拟，完全集成的部分响应最大似然（PRML）读取通道，模拟自适应均衡器和模拟维特比检测器，从而节省空间，提高性能并降低功耗。对于在读操作中使用的信号检测和重建，部分响应最大似然（PRML）读通道包括耦合到低通滤波器的可变增益放大器，用于输入到自适应模拟均衡器。自适应模拟均衡器包括模拟延迟线和模拟前馈均衡器（FFE）。模拟维特比检测器采用最大似然序列估计（MLSE）技术来执行信号检测功能。解码器/解扰器产生最终的重构信号。部分响应最大似然（PRML）读通道的模拟实现还包括耦合到写预补偿电路的加扰器/编码器，以输出到单独的写头。

2. 发明授权

US5302863A CMOS peak amplitude detector 失效
标题翻译： CMOS峰值检波器
公开(公告)号：US5302863A
公开(公告)日：1994-04-12
申请号：US11028
申请日：1993-01-29
申请人： Thomas M. Walley , Larry S. Metz , Charles E. Moore
发明人： Thomas M. Walley , Larry S. Metz , Charles E. Moore
IPC分类号： G01R19/04 , G11C27/00 , G11C27/02 , H03K5/1532 , H03K5/153
CPC分类号： H03K5/1532 , G01R19/04 , G11C27/00 , G11C27/026
摘要： A fully-integrated CMOS peak detector stores the peak amplitude of an input signal using an on-chip storage capacitor. The fully-integrated CMOS peak detector includes a delay buffer, a transfer gate and a comparator. A discharge controller is used to step-down the peak amplitude stored on the on-chip storage capacitor some predetermined amount. The discharge controller includes a switched capacitor circuit which is placed in series with the storage capacitor such that the two capacitors act as a capacitive voltage divider to produce a predictable fraction of the acquired peak amplitude. Multiple peaks can be determined and/or stored by using multiple fully-integrated CMOS peak detectors in conjunction with a single comparator. A multiplexer is used in this configuration to control the multiple peak detectors.
摘要翻译：全集成CMOS峰值检测器使用片上存储电容器存储输入信号的峰值幅度。完全集成的CMOS峰值检测器包括延迟缓冲器，传输门和比较器。放电控制器用于降低存储在片上存储电容器上的峰值幅度一定的量。放电控制器包括与存储电容器串联放置的开关电容器电路，使得两个电容器用作电容分压器以产生所获取的峰值幅度的可预测分数。可以通过结合单个比较器使用多个完全集成的CMOS峰值检测器来确定和/或存储多个峰。在该配置中使用多路复用器来控制多个峰值检测器。

3. 发明授权

US07126585B2 One chip USB optical mouse sensor solution 有权
公开(公告)号：US07126585B2
公开(公告)日：2006-10-24
申请号：US09931987
申请日：2001-08-17
申请人： Jeffery Davis , Michael J. Brosnan , Thomas M. Walley , Mark A. Anderson , Brian J. Misek , Allen C. Norskog
发明人： Jeffery Davis , Michael J. Brosnan , Thomas M. Walley , Mark A. Anderson , Brian J. Misek , Allen C. Norskog
IPC分类号： G09G5/08
CPC分类号： G06F3/0317
摘要： An apparatus for controlling the position of a screen pointer for an electronic device having a display screen includes a light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a single chip for receiving the reflected images, generating digital representations of the reflected images, and generating a first set of movement data based on the digital representations of the reflected images. The first set of movement data is indicative of relative motion between the chip and the imaging surface. The single chip includes a serial interface for outputting motion data in a serial format based on the movement data.

4. 发明授权

US06770863B2 Apparatus and method for three-dimensional relative movement sensing 有权
标题翻译：三维相对运动检测装置及方法
公开(公告)号：US06770863B2
公开(公告)日：2004-08-03
申请号：US10004512
申请日：2001-10-26
申请人： Thomas M. Walley
发明人： Thomas M. Walley
IPC分类号： G06M700
CPC分类号： G06F3/0346 , G01B11/002 , G06F3/0304
摘要： An apparatus for sensing three-dimensional relative movement includes a movable motion sensor including a first and a second two-dimensional array of photo detectors. At least one lens directs far-field images onto the first and the second arrays of photo detectors. The sensor is configured to generate digital representations of the far-field images and to generate three-dimensional relative movement data based on the digital representations of the far-field images. The movement data is indicative of motion of the sensor in three dimensions.
摘要翻译：用于感测三维相对运动的装置包括可移动运动传感器，其包括光电检测器的第一和第二二维阵列。至少一个透镜将远场图像引导到第一和第二光电检测器阵列上。传感器被配置为生成远场图像的数字表示，并且基于远场图像的数字表示来生成三维相对运动数据。运动数据表示三维传感器的运动。

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