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61. 发明专利

JP2018511258A マルチチップのダイナミックレンジ拡張（ＤＲＥ）音声処理の方法および装置审中-公开
公开(公告)号：JP2018511258A
公开(公告)日：2018-04-19
申请号：JP2017550521
申请日：2016-03-16
申请人：シーラスロジック,インコーポレイテッド , Cirrus Logic,Inc.
发明人：ダス、テジャスヴィ , メランソン、ジョンエル.
IPC分类号： H03G7/00 , H04R3/00
CPC分类号： H04R3/04 , G10L19/167 , G10L21/0324 , H03G7/007 , H03G9/005 , H03M1/00 , H03M1/12 , H03M1/1225 , H03M1/18 , H03M2201/4135 , H04L1/20 , H04L27/2647 , H04R2430/01 , H04R2430/03
摘要：本開示の実施形態によれば、ダイナミックレンジ拡張情報を有する音声信号を2つ以上の集積回路にわたって処理するためのマルチチップ回路が、ホスト集積回路およびクライアント集積回路を含んでもよい。ホスト集積回路は、デジタル音声入力信号のためのダイナミックレンジ拡張利得を判断し、そのダイナミックレンジ拡張利得に応じてデジタル音声入力信号を処理し、処理済みのデジタル音声入力信号に基づいて音声データを送信するように構成されてもよい。クライアント集積回路はホスト集積回路に結合されてもよく、音声データを受信するように構成されてもよく、クライアント集積回路にダイナミックレンジ拡張利得が提供され、クライアント集積回路はダイナミックレンジ拡張利得を使用して音声データを処理するように構成される。

62. 发明专利

JP2009043408A Improved fault tolerant sync mark detector for sampled amplitude magnetic recording 有权
标题翻译：改进的容错同步标记检测器，用于采样放大磁记录
公开(公告)号：JP2009043408A
公开(公告)日：2009-02-26
申请号：JP2008273649
申请日：2008-10-23
申请人： Cirrus Logic Inc , シーラスロジック,インコーポレイテッドCirrus Logic,Inc.
发明人： ZOOK CHRISTOPHER P
IPC分类号： G11B20/14 , G11B5/012 , G11B20/10 , G11B20/18 , G11B27/30
CPC分类号： G11B20/10055 , G11B5/012 , G11B20/10009 , G11B20/10037 , G11B20/1403 , G11B27/30 , G11B27/3027 , G11B2020/1476
摘要： PROBLEM TO BE SOLVED: To provide a sync mark detection method that uses information from a preamble and a sign of sampled data in order to further increase the fault tolerance of the sync mark detector.
SOLUTION: Digital data comprise a preamble field, a sync mark following thereto and a data field following thereto. A timing recovery (28) in a read channel synchronizes to a phase and frequency of the preamble field, and the sync detector (A120) detects the sync mark in order to frame operation of RLL decoders (36, A122) for decoding the detected data field. To decrease the probability of early misdetection, the sync mark is chosen to have minimum correlation with shifted versions of the sync mark concatenated with the preamble field. To further increase the fault tolerance, the sync mark detector is enabled by timing recovery relative to an end of the preamble field.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种使用来自前导码的信息和采样数据的符号的同步标记检测方法，以进一步增加同步标记检测器的容错性。解决方案：数字数据包括前导码字段，随后的同步标记和跟随它的数据字段。读通道中的定时恢复（28）与前同步码字段的相位和频率同步，并且同步检测器（A120）检测同步标记，以便对用于解码检测数据的RLL解码器（36，A122）进行帧操作领域。为了降低早期错误检测的可能性，选择同步标记与与前同步码字段连接的同步标记的移位版本具有最小相关性。为了进一步增加容错能力，同步标记检测器通过相对于前同步码字段的结束的定时恢复来启用。版权所有（C）2009，JPO＆INPIT

63. 发明专利

JP2008092606A Analog-to-digital modulator 审中-公开
标题翻译：模拟数字调制器
公开(公告)号：JP2008092606A
公开(公告)日：2008-04-17
申请号：JP2007332967
申请日：2007-12-25
申请人： Cirrus Logic Inc , シーラスロジック,インコーポレイテッドCirrus Logic,Inc.
发明人： TUCKER JOHN CHRISTOPHER
IPC分类号： H03M3/02 , H03M3/04
CPC分类号： H03M3/32 , H03M3/424 , H03M3/448 , H03M3/452 , H03M3/454
摘要： PROBLEM TO BE SOLVED: To provide a method and system for operating two or more integrator amplifiers with different power supplies for a modulator of an analog-to-digital ("A/D") converter.
SOLUTION: A first upstream integrator (INT1) is operated with one power supply, and the other downstream integrator(s) is/are operated with at least another power supply (INT2). The modulator has amplifiers with coefficient gains having values that are determined and set so that voltage levels for the at least another integrator are maintained within operating and output limits. An integrating coefficient gain (k1) for the first integrator is set to have a sufficiently large value so that an integrating capacitor can be made small for the one integrator. Another integrating coefficient gain (k2) for a second integrator is set to have a sufficiently small value so that an output voltage form the first integrator is sufficiently attenuated to a voltage value within an operating range of the second integrator.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于使用具有用于模拟数字（“A / D”）转换器的调制器的不同电源的两个或更多个积分放大器的方法和系统。
解决方案：第一个上游积分器（INT1）由一个电源供电，另一个下游积分器至少与另一个电源（INT2）一起工作。调制器具有放大器，其系数增益具有确定和设置的值，使得至少另一个积分器的电压电平保持在操作和输出限制内。将第一积分器的积分系数增益（k1）设定为具有足够大的值，使得对于一个积分器可以使积分电容器较小。将第二积分器的另一积分系数增益（k2）设定为具有足够小的值，使得形成第一积分器的输出电压充分衰减到第二积分器的工作范围内的电压值。版权所有（C）2008，JPO＆INPIT

64. 发明专利

JP2007267434A Noise shaping circuit and method with feedback steering overload compensation and system using the same 审中-公开
标题翻译：噪声形成电路及其反馈转向过载补偿方法及其使用方法
公开(公告)号：JP2007267434A
公开(公告)日：2007-10-11
申请号：JP2007192464
申请日：2007-07-24
申请人： Cirrus Logic Inc , シーラスロジック,インコーポレイテッドCirrus Logic,Inc.
发明人： MELANSON JOHN LAURENCE
IPC分类号： H03M7/32 , H03M3/04 , H03M7/36
CPC分类号： H03M7/3011 , H03M7/3026 , H03M7/3033
摘要： PROBLEM TO BE SOLVED: To provide a method and a circuit whereby a noise shaper is immune to an input overload.
SOLUTION: The noise shaper includes a first feedback loop for noise shaping a first feedback signal under normal operating conditions and having a first filter (201) with a first signal transfer function and a second feedback loop that is stable under overload conditions and has a second filter (202) having a second signal transfer function differing from the first signal transfer function. The noise shaper also includes an output circuit block including a quantizer (203) and steering circuitry (204). The quantizer (203) includes an input simultaneously responsive to outputs of the first (201) and second filters (202). The steering circuitry (204) steers a feedback signal from an output of the quantizer (203) to input of the first and second feedback loops.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种噪声整形器免于输入过载的方法和电路。解决方案：噪声整形器包括用于在正常操作条件下对第一反馈信号进行噪声整形并具有第一信号传递函数的第一滤波器（201）和在过载条件下稳定的第二反馈环路的第一反馈环路，以及具有不同于第一信号传递函数的第二信号传递函数的第二滤波器（202）。噪声整形器还包括包括量化器（203）和转向电路（204）的输出电路块。量化器（203）包括同时响应于第一（201）和第二滤波器（202）的输出的输入。转向电路（204）将来自量化器（203）的输出的反馈信号转向第一和第二反馈回路的输入。版权所有（C）2008，JPO＆INPIT

65. 发明专利

JP2007267433A Noise shaping circuit and method with feedback steering overload compensation and system using the same 有权
公开(公告)号：JP2007267433A
公开(公告)日：2007-10-11
申请号：JP2007192463
申请日：2007-07-24
申请人： Cirrus Logic Inc , シーラスロジック,インコーポレイテッドCirrus Logic,Inc.
发明人： MELANSON JOHN LAURENCE
IPC分类号： H03M7/32 , H03M3/04 , H03M7/36
CPC分类号： H03M7/3011 , H03M7/3026 , H03M7/3033
摘要： PROBLEM TO BE SOLVED: To provide a method and a circuit whereby a noise shaper is immune to an input overload.
SOLUTION: The noise shaper includes a first feedback loop for noise shaping a first feedback signal under normal operating conditions and having a first filter (201) with a first signal transfer function and a second feedback loop that is stable under overload conditions and has a second filter (202) having a second signal transfer function differing from the first signal transfer function. The noise shaper also includes an output circuit block including a quantizer (203) and steering circuitry (204). The quantizer (203) includes an input simultaneously responsive to outputs of the first (201) and second filters (202). The steering circuitry (204) steers a feedback signal from an output of the quantizer (203) to input of the first and second feedback loops.
COPYRIGHT: (C)2008,JPO&INPIT

66. 发明专利

JP2007220301A Sliding mode control of magneto-resistive read head for magnetic recording 审中-公开
标题翻译：用于磁记录的磁阻读取头的滑动模式控制
公开(公告)号：JP2007220301A
公开(公告)日：2007-08-30
申请号：JP2007142615
申请日：2007-05-29
申请人： Cirrus Logic Inc , シーラスロジック, インコーポレイテッド
发明人： ROMANO PAUL M , SUPINO LOUIS
IPC分类号： G11B21/08 , G11B21/10 , G11B5/00 , G11B5/55 , G11B5/596
CPC分类号： G11B5/59683 , G11B5/5547 , G11B2005/0016
摘要： PROBLEM TO BE SOLVED: To provide a sliding mode controller for controlling the motion of a magneto-resistive (MR) read head.
SOLUTION: A magnetic disk comprises a plurality of concentric data tracks recorded thereon wherein each data track comprises user data and servo data. The sliding mode controller operates by multiplying a head position error phase state and a head position error velocity phase state by respective switching gains to force the phase states to follow a predetermined phase state trajectory. The phase state trajectory can be defined by a single linear segment, a variable linear segment, multiple linear segments over the entire region of excursion, or optimum parabolic acceleration and deceleration segments. Switching logic, responsive to the phase states and a trajectory segment value σ, switches between positive and negative feedback gains to drive the phase states toward a current trajectory segment.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于控制磁阻（MR）读取头的运动的滑动模式控制器。解决方案：磁盘包括记录在其上的多个同心数据轨道，其中每个数据轨道包括用户数据和伺服数据。滑动模式控制器通过将头部位置误差相位状态和头部位置误差速度相位状态乘以相应的切换增益来操作，以迫使相位状态遵循预定的相位状态轨迹。相位状态轨迹可以由单个线性段，可变线性段，整个移动区域上的多个线性段或最佳抛物线加速和减速段来定义。响应于相位状态和轨迹段值σ的开关逻辑在正和负反馈增益之间切换以将相位状态驱动到当前轨迹段。版权所有（C）2007，JPO＆INPIT

67. 发明专利

JP2007035278A Optical disk drive memory system, method for controlling movement of optical read head, and sliding mode controller 审中-公开
标题翻译：光盘驱动存储器系统，用于控制光读头的运动的方法和滑模控制器
公开(公告)号：JP2007035278A
公开(公告)日：2007-02-08
申请号：JP2006307240
申请日：2006-11-13
申请人： Cirrus Logic Inc , シーラスロジック,インコーポレイテッドCirrus Logic,Inc.
发明人： SUPINO LOUIS , ROMANO PAUL M , REIFF FRANCIS H
IPC分类号： G11B7/085 , G05B13/02 , G11B7/09
CPC分类号： G11B7/0946 , G05B13/0255 , G11B7/08529 , G11B7/0908
摘要： PROBLEM TO BE SOLVED: To provide an optical disk drive servo control system having not so high sensitivity to a parameter change, capable of controlling transition better and reducing the performance cost of a complex adaptive linear controller. SOLUTION: The optical disk memory system is provided with a sliding mode controller 23 actuating an optical read head assembly on an optical disk during focus capture, focus tracking, track seek and center line tracking. This sliding mode controller operates while switching positive and negative feedback to follow a prescribed phase state locus by fitting a prescribed phase state (e.g. position error and speed of a read head). COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种对参数变化灵敏度不高的光盘驱动器伺服控制系统，能够更好地控制转换并降低复杂自适应线性控制器的性能成本。解决方案：光盘存储器系统设置有滑动模式控制器23，其在聚焦捕获，聚焦跟踪，跟踪寻找和中心线跟踪期间致动光盘上的光学读取头组件。该滑动模式控制器在通过拟合规定的相位状态（例如位置误差和读取头的速度）来切换正和负反馈以跟随规定的相位状态轨迹时进行操作。版权所有（C）2007，JPO＆INPIT

68. 发明专利

JP2002203326A OPTICAL DISK PICKUP USING EXCHANGE OF CURRENT MODE SIGNAL, AND SYSTEM AND METHOD USING OPTICAL DISK PICKUP 审中-公开
公开(公告)号：JP2002203326A
公开(公告)日：2002-07-19
申请号：JP2001332793
申请日：2001-10-30
申请人： CIRRUS LOGIC INC
发明人： PIETRUSZYNSKI DAVID MICHAEL , BAIRD REX
IPC分类号： G11B20/10 , G11B7/004 , G11B7/005 , G11B7/09 , G11B7/13 , H03F3/08
摘要： PROBLEM TO BE SOLVED: To provide a system and a method capable of keeping a signal-to-noise ration with respect to the signal in the transmitting process between flexible cables even though the supply voltage is reduced. SOLUTION: The optical disk pickup system is provided with an array of photodiodes 101 for converting photons reflected from the optical disk to plural electrical signals respectively showing channels. By driving circuit groups 407,408, at least one among the electrical signals sis driven as the current between conductors of the flexible cables 403. By a low impedance load 404, the electrical signal driven between the conductors as the current is converted to the voltage for the further process.

69. 发明专利

JP2002175174A GRAPHICS SYSTEM, AUTOMATIC GRAPHICS OPERATING METHOD, AND GRAPHICS PROCESSOR 审中-公开
公开(公告)号：JP2002175174A
公开(公告)日：2002-06-21
申请号：JP2001280826
申请日：2001-09-14
申请人： CIRRUS LOGIC INC
发明人： OWEN RICHARD C A , MILLS KARL S , MAY BRADLEY A , LINSTAD LAUREN E
IPC分类号： G06F9/38 , G06F3/14 , G06F3/153 , G06T1/20 , G09G5/00 , G09G5/36 , G09G5/393
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for automatically realizing various kinds of graphics operations by using a selectable triggering mechanism. SOLUTION: This system is provided with a host computer, a frame buffer memory connected with the host computer and a graphics processor which is connected with the host computer and the frame buffer memory, and has a first triggering circuit for starting a first graphics operation and a programmable register and also has a block transfer engine which is connected with the first triggering circuit, controls a transfer to the frame buffer memory and a transfer from a frame file memory and executes the first graphics operation in response to the first triggering circuit based on contents of the programmable register.

70. 发明专利

JPH11273095A Generation for orthogonal seek signal from discontinuous timewise tracking error signal and discontinuous timewise rf data signal in optical storage device 有权
标题翻译：由不连续的时间轴跟踪误差信号和不连续的时间轴产生正交信号信号在光存储器件中的RF数据信号
公开(公告)号：JPH11273095A
公开(公告)日：1999-10-08
申请号：JP35363198
申请日：1998-12-11
申请人： Cirrus Logic Inc , シーラスロジック,インコーポレイテッド
发明人： ZHU SHUANGXIA , SUPINO LOUIS , GRABA JIM , ROMANO PAUL
IPC分类号： G11B21/08 , G11B7/085 , G11B7/09 , G11B21/10
CPC分类号： G11B7/08541 , G11B7/0901
摘要： PROBLEM TO BE SOLVED: To generate orthogonal signals from a discontinuous timewise TES signal and a discontinuous timewise RF baseband signal by detecting pulses being in the discontinuous timewise TES signal expressing the position of a light beam with respect to the center line of a track and the discontinuous timewise RF baseband signal and counting the number of tracks in which the light beam traverses in its seeking operation. SOLUTION: A discontinuous timewise TES signal 114 is selected by a MUX 100. On the other hand, a discontinuous timewise RF baseband signal 112 is extracted by an envelope detector 110. The discontinuous timewise TES signal 114 and the RF baseband signal 112 are synchronized by a synchronizer 118 according to a current seek speed and an operation mode and they pass through LPFs 116A, 116B and a track traversing frequency is extracted. Then, these signals are respectively converted into binary square-wave signals TEX 128 and REX 130 by a TEX detector 132 and a REX detector 134 to form orthogonal seek signals.
摘要翻译：要解决的问题：通过检测表示光束相对于轨道的中心线的位置的不连续的时间TES信号中的脉冲来产生来自不连续的时间TES信号和不连续的时间RF基带信号的正交信号，不连续的时间上的RF基带信号，并且在其寻道操作中对光束穿过的轨道数进行计数。解决方案：由MUX100选择不连续的时间TES信号114.另一方面，由包络检测器110提取不连续的时间上的RF基带信号112.不连续的时间TES信号114和RF基带信号112通过提取根据当前搜索速度和操作模式的同步器118，并且它们通过LPF 116A，116B和轨道横越频率被提取。然后，这些信号通过TEX检测器132和REX检测器134分别转换成二进制方波信号TEX 128和REX 130，以形成正交寻道信号。

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