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41. 发明授权

US5835295A Zero phase restart interpolated timing recovery in a sampled amplitude read channel 失效
标题翻译：采样幅度读通道中的零相位重启内插定时恢复
公开(公告)号：US5835295A
公开(公告)日：1998-11-10
申请号：US751880
申请日：1996-11-18
申请人： Richard T. Behrens
发明人： Richard T. Behrens
IPC分类号： G11B5/09 , G11B20/10 , G11B20/14
CPC分类号： G11B20/10055 , G11B20/10009 , G11B20/10037 , G11B20/1403 , G11B5/09 , H04L7/0029
摘要： A sampled amplitude read channel is disclosed for disc storage systems which asynchronously samples an analog read signal, equalizes the resulting discrete time sample values according to a target partial response, extracts synchronous sample values through interpolated timing recovery, and detects digital data from the synchronous sample values using a Viterbi sequence detector. The interpolated timing recovery comprises a zero phase restart circuit for minimizing an intial phase error between expected sample values and interpolated sample values at the beginning of an acquisition mode by computing an initial sampling phase offset.
摘要翻译：公开了一种用于磁盘存储系统的采样幅度读取通道，其异步采样模拟读取信号，根据目标部分响应对所得到的离散时间采样值进行均衡，通过内插定时恢复提取同步采样值，并且从同步采样中检测数字数据值使用维特比序列检测器。插值定时恢复包括零相重启电路，用于通过计算初始采样相位偏移来最小化预期采样值和采集模式开始时的内插采样值之间的初始相位误差。

42. 发明授权

US5754353A Channel quality circuit in a sampled amplitude read channel 失效
公开(公告)号：US5754353A
公开(公告)日：1998-05-19
申请号：US340939
申请日：1994-11-17
申请人： Richard T. Behrens , William R. Foland, Jr.
发明人： Richard T. Behrens , William R. Foland, Jr.
IPC分类号： G11B5/09 , G11B20/10 , G11B20/18
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10037 , G11B20/10055 , G11B20/18 , G11B20/1816 , G11B20/182
摘要： A channel quality circuit, incorporated within a sampled amplitude read channel utilized in a magnetic storage system, for processing and accumulating performance data from the individual read channel components, wherein the performance data is used to calibrate the read channel to operate in a particular environment, to estimate the bit error rate of the storage system, and to detect defects in the magnetic medium. The channel quality circuit generates a test pattern of digital data which is written to the storage system. Then, as the test pattern is read from the storage system, the channel quality circuit accumulates performance data from the read channel components. The test pattern is used to generate expected samples and expected sample errors relative to the samples read by the read channel. Gating logic is programmed to accumulate only the particular performance data of interest. The channel quality circuit computes auto and cross-correlations, squared errors, and threshold comparisons. A defect detection filter detects particular defects in the media. In order to predict the bit error rate of the storage system, the channel quality circuit accumulates noise auto-correlation data, confidence metrics from a sequence detector, and cross-correlation of expected sample errors with actual sample errors.

43. 发明授权

US08467483B2 Radio-frequency apparatus and associated methods 有权
标题翻译：射频设备及相关方法
公开(公告)号：US08467483B2
公开(公告)日：2013-06-18
申请号：US10388206
申请日：2003-03-13
申请人： G. Diwakar Vishakhadatta , Donald A. Kerth , Jeffrey W. Scott , Richard T. Behrens , G. Tyson Tuttle , Vishnu S. Srinivasan
发明人： G. Diwakar Vishakhadatta , Donald A. Kerth , Jeffrey W. Scott , Richard T. Behrens , G. Tyson Tuttle , Vishnu S. Srinivasan
IPC分类号： H03D1/04 , H04L25/00
CPC分类号： H04B1/0007 , H04B1/0003 , H04B1/0039 , H04B1/28 , H04B1/406
摘要： A radio-frequency apparatus includes an integrated circuit. The integrated circuit includes receiver analog circuitry, receiver digital circuitry, a digital-to-analog converter, and a signal selector. The receiver analog circuitry receives radio-frequency signals, and provides a first digital signal. The receiver digital circuitry receives the first digital signal, and provides a second digital signal. The digital-to-analog converter converts the second digital signal into a first analog signal. The signal selector receives the second digital signal and the first analog signal, and selectively provides one of the second digital signal and the first analog signal as an output signal of the integrated circuit.
摘要翻译：射频装置包括集成电路。集成电路包括接收机模拟电路，接收机数字电路，数模转换器和信号选择器。接收机模拟电路接收射频信号，并提供第一数字信号。接收机数字电路接收第一数字信号，并提供第二数字信号。数模转换器将第二数字信号转换为第一模拟信号。信号选择器接收第二数字信号和第一模拟信号，并且选择性地提供第二数字信号和第一模拟信号中的一个作为集成电路的输出信号。

44. 发明授权

US08422964B2 Partitioned radio-frequency apparatus and associated methods 有权
公开(公告)号：US08422964B2
公开(公告)日：2013-04-16
申请号：US13104822
申请日：2011-05-10
申请人： Donald A. Kerth , Richard T. Behrens , Jeffrey W. Scott , G. Diwakar Vishakhadatta , G. Tyson Tuttle , Vishnu Shankar Srinivasan
发明人： Donald A. Kerth , Richard T. Behrens , Jeffrey W. Scott , G. Diwakar Vishakhadatta , G. Tyson Tuttle , Vishnu Shankar Srinivasan
IPC分类号： H04B1/40
CPC分类号： H04B1/109 , H04B1/0003 , H04B1/28 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064 , H04L27/2649
摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.

45. 发明授权

US08195115B2 Receiver architectures for digital radio broadcasts and associated methods 有权
标题翻译：数字无线电广播接收机架构及相关方法
公开(公告)号：US08195115B2
公开(公告)日：2012-06-05
申请号：US13111623
申请日：2011-05-19
申请人： G. Tyson Tuttle , Dan B. Kasha , Wade R. Gillham , Richard T. Behrens
发明人： G. Tyson Tuttle , Dan B. Kasha , Wade R. Gillham , Richard T. Behrens
IPC分类号： H04B1/18 , H04B1/26
CPC分类号： H04H40/18 , H04B1/1646 , H04B1/3805 , H04B1/406
摘要： Receiver architectures and related methods are disclosed for high definition (HD) and digital radio FM broadcast receivers. The radio receiver architectures are configured to utilize multiple analog-to-digital converters (ADCs) to handle the digital radio spectrum and can be configured to modify a target IF frequencies depending upon the mode of operation of the receiver. For example, the receiver can include an analog FM reception mode and a digital FM reception mode for which different down-conversions are used for the same analog-plus-digital audio broadcast channel. If desired, the radio broadcast receivers disclosed can be configured so that they only receive digital FM radio content, for example, if the analog FM broadcast was of no interest and/or if the broadcast was all digital.
摘要翻译：公开了用于高分辨率（HD）和数字无线电FM广播接收机的接收机架构和相关方法。无线电接收器架构被配置为利用多个模数转换器（ADC）来处理数字无线电频谱，并且可以被配置为根据接收机的操作模式来修改目标IF频率。例如，接收机可以包括模拟FM接收模式和数字FM接收模式，对于相同的模拟 - 数字音频广播频道，接收模式和不同的下变频被使用。如果需要，所公开的无线电广播接收机可以被配置为使得它们仅接收数字FM无线电内容，例如，如果模拟FM广播不感兴趣和/或如果广播是全部数字的。

46. 发明申请

US20110216855A1 RECEIVER ARCHITECTURES FOR DIGITAL RADIO BROADCASTS AND ASSOCIATED METHODS 有权
标题翻译：数字无线电广播接收机架构及相关方法
公开(公告)号：US20110216855A1
公开(公告)日：2011-09-08
申请号：US13111623
申请日：2011-05-19
申请人： G. Tyson Tuttle , Dan B. Kasha , Wade R. Gillham , Richard T. Behrens
发明人： G. Tyson Tuttle , Dan B. Kasha , Wade R. Gillham , Richard T. Behrens
IPC分类号： H04L27/00
CPC分类号： H04H40/18 , H04B1/1646 , H04B1/3805 , H04B1/406
摘要： Receiver architectures and related methods are disclosed for high definition (HD) and digital radio FM broadcast receivers. The radio receiver architectures are configured to utilize multiple analog-to-digital converters (ADCs) to handle the digital radio spectrum and can be configured to modify a target IF frequencies depending upon the mode of operation of the receiver. For example, the receiver can include an analog FM reception mode and a digital FM reception mode for which different down-conversions are used for the same analog-plus-digital audio broadcast channel. If desired, the radio broadcast receivers disclosed can be configured so that they only receive digital FM radio content, for example, if the analog FM broadcast was of no interest and/or if the broadcast was all digital.
摘要翻译：公开了用于高分辨率（HD）和数字无线电FM广播接收机的接收机架构和相关方法。无线电接收器架构被配置为利用多个模数转换器（ADC）来处理数字无线电频谱，并且可以被配置为根据接收机的操作模式来修改目标IF频率。例如，接收机可以包括模拟FM接收模式和数字FM接收模式，对于相同的模拟 - 数字音频广播频道，接收模式和不同的下变频被使用。如果需要，所公开的无线电广播接收机可以被配置为使得它们仅接收数字FM无线电内容，例如，如果模拟FM广播不感兴趣和/或如果广播全部是数字的。

47. 发明授权

US07949319B2 Receiver architectures for digital radio broadcasts and associated methods 有权
标题翻译：数字无线电广播接收机架构及相关方法
公开(公告)号：US07949319B2
公开(公告)日：2011-05-24
申请号：US11726500
申请日：2007-03-22
申请人： G. Tyson Tuttle , Dan B. Kasha , Wade R. Gillham , Richard T. Behrens
发明人： G. Tyson Tuttle , Dan B. Kasha , Wade R. Gillham , Richard T. Behrens
IPC分类号： H04B1/18 , H04B1/26
CPC分类号： H04H40/18 , H04B1/1646 , H04B1/3805 , H04B1/406
摘要： Receiver architectures and related methods are disclosed for high definition (HD) and digital radio FM broadcast receivers. The radio receiver architectures are configured to utilize multiple analog-to-digital converters (ADCs) to handle the digital radio spectrum and can be configured to modify a target IF frequencies depending upon the mode of operation of the receiver. For example, the receiver can include an analog FM reception mode and a digital FM reception mode for which different down-conversions are used for the same analog-plus-digital audio broadcast channel. If desired, the radio broadcast receivers disclosed can be configured so that they only receive digital FM radio content, for example, if the analog FM broadcast was of no interest and/or if the broadcast was all digital.
摘要翻译：公开了用于高分辨率（HD）和数字无线电FM广播接收机的接收机架构和相关方法。无线电接收器架构被配置为利用多个模数转换器（ADC）来处理数字无线电频谱，并且可以被配置为根据接收机的操作模式来修改目标IF频率。例如，接收机可以包括模拟FM接收模式和数字FM接收模式，对于相同的模拟 - 数字音频广播频道，接收模式和不同的下变频被使用。如果需要，所公开的无线电广播接收机可以被配置为使得它们仅接收数字FM无线电内容，例如，如果模拟FM广播不感兴趣和/或如果广播全部是数字的。

48. 发明授权

US07885255B2 Synchronous read channel 有权
公开(公告)号：US07885255B2
公开(公告)日：2011-02-08
申请号：US12126188
申请日：2008-05-23
申请人： Richard T. Behrens , Kent D. Anderson , Alan J. Armstrong , Trent Dudley , Bill R. Foland , Neal Glover , Larry D. King
发明人： Richard T. Behrens , Kent D. Anderson , Alan J. Armstrong , Trent Dudley , Bill R. Foland , Neal Glover , Larry D. King
IPC分类号： H04L12/50
摘要： A synchronous read channel having a single chip integrated circuit digital portion which provides digital gain control, timing recovery, equalization, digital peak detection, sequence detection, RLL(1,7) encoding and decoding, error-tolerant synchronization and channel quality measurement is disclosed. The integrated circuit accommodates both center sampling and side sampling, and has a high degree of programmability of various pulse shaping and recovery parameters and the ability to provide decoded data using sequence detection or digital peak detection. These characteristics, together with the error-tolerant sync mark detection and the ability to recover data when the sync mark is obliterated, allow a wide variety of retry and recovery strategies to maximize the possibility of data recovery. Various embodiments, including an embodiment incorporating the analog functions as well as the primary digital functions of the read channel in a single integrated circuit, and preferred embodiments utilizing a reduced complexity, programmable modified Viterbi detector supporting a broad class of partial response channels are disclosed.

49. 发明授权

US07702362B2 Digital architecture for radio-frequency apparatus and associated methods 有权
标题翻译：射频设备数字架构及相关方法
公开(公告)号：US07702362B2
公开(公告)日：2010-04-20
申请号：US11287995
申请日：2005-11-28
申请人： Richard T. Behrens , Tod Paulus , Mark S. Spurbeck , Vishnu S. Srinivasan , Donald A. Kerth , Jeffrey W. Scott , G. Tyson Tuttle , G. Diwakar Vishakhadatta
发明人： Richard T. Behrens , Tod Paulus , Mark S. Spurbeck , Vishnu S. Srinivasan , Donald A. Kerth , Jeffrey W. Scott , G. Tyson Tuttle , G. Diwakar Vishakhadatta
IPC分类号： H04B1/38 , H04M1/00
CPC分类号： H04B1/28 , H04B1/0003 , H04B1/38 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064
摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.
摘要翻译：射频（RF）接收机包括接收机模拟电路和接收机数字电路。接收器模拟电路驻留在第一集成电路内，并且接收器数字电路位于第二集成电路内。第二集成电路通过一位数字接口耦合到第一集成电路。接收机模拟电路接收RF信号并处理所接收的RF信号以产生数字信号。接收机模拟电路将数字信号提供给接收机数字电路。接收机数字电路包括数字下变频器电路，其将数字信号与中频（IF）本地振荡器（LO）信号混合以产生数字下变频信号。接收机数字电路还包括数字滤波器电路，其对数字下变频信号进行滤波以产生经滤波的数字信号。

50. 发明申请

US20080139157A1 Partitioned radio-frequency apparatus and associated methods 有权
标题翻译：分频射频设备及相关方法
公开(公告)号：US20080139157A1
公开(公告)日：2008-06-12
申请号：US11931656
申请日：2007-10-31
申请人： Donald A. Kerth , Richard T. Behrens , Jeffrey W. Scott , G. Diwakar Vishakhadatta , G. Tyson Tuttle , Vishnu Shankar Srinivasan
发明人： Donald A. Kerth , Richard T. Behrens , Jeffrey W. Scott , G. Diwakar Vishakhadatta , G. Tyson Tuttle , Vishnu Shankar Srinivasan
IPC分类号： H04B1/18
CPC分类号： H04B1/109 , H04B1/0003 , H04B1/28 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064 , H04L27/2649
摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
摘要翻译：射频（RF）设备包括接收模拟电路，其接收RF信号并且向与接收机模拟电路协作起作用的接收机数字电路提供至少一个数字信号。接收机模拟电路和接收机数字电路被分割，使得接收机模拟电路和接收机数字电路之间的干扰效应趋向于减小。

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