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1. 发明授权

US06737995B2 Clock and data recovery with a feedback loop to adjust the slice level of an input sampling circuit 有权
标题翻译：时钟和数据恢复与反馈回路调整输入采样电路的限幅电平
公开(公告)号：US06737995B2
公开(公告)日：2004-05-18
申请号：US10119545
申请日：2002-04-10
申请人： Devin Kenji Ng , John Michael Khoury, Jr. , Guoqing Miao , Juergen Pianka
发明人： Devin Kenji Ng , John Michael Khoury, Jr. , Guoqing Miao , Juergen Pianka
IPC分类号： H03M506
CPC分类号： H04L25/063 , G11B20/10203 , G11B20/1403
摘要： Techniques that may aid in the recovery of clock and data signals include receiving a stream of incoming data signals and determining an offset based, at least in part, on the state of a transition bit sampled from the stream of incoming data signals. The slice level of an input sampling circuit is adjusted based on the offset. Re-timed data signals corresponding to the incoming data signals may be generated.
摘要翻译：可能有助于恢复时钟和数据信号的技术包括接收输入数据信号流并且至少部分地基于从输入数据信号流中采样的转换位的状态来确定偏移。基于偏移量调整输入采样电路的限幅电平。可以产生对应于输入数据信号的重新定时的数据信号。

2. 发明授权

US06356214B1 Fast look-up table based scheme for NRZI encoding/decoding and zero insertion/removal in serial bit streams 有权
标题翻译：用于NRZI编码/解码和串行比特流中零插入/删除的快速查找表方案
公开(公告)号：US06356214B1
公开(公告)日：2002-03-12
申请号：US09241715
申请日：1999-02-02
申请人： Rickie McDonald , Sanjeev Ukhalkar , Cai Monsson
发明人： Rickie McDonald , Sanjeev Ukhalkar , Cai Monsson
IPC分类号： H03M506
CPC分类号： G11B20/10212 , H03M5/06
摘要： A look-up table scheme for performing non-return-to-zero inverted (NRZI) encoding on input data bytes. Also disclosed is a look-up table scheme for performing zero-insertion in data streams that so require. An address is formed from an input data byte and is then used to look-up the corresponding encoded/translated byte.
摘要翻译：一种用于对输入数据字节执行不归零（NRZI）编码的查找表方案。还公开了一种用于在需要的数据流中执行零插入的查找表方案。地址由输入数据字节形成，然后用于查找对应的编码/翻译字节。

3. 发明授权

US06437712B1 Data stream conversion apparatus and method, variable length coded data stream generation apparatus and method, and camera system 有权
标题翻译：数据流转换装置和方法，可变长度编码数据流生成装置和方法以及相机系统
公开(公告)号：US06437712B1
公开(公告)日：2002-08-20
申请号：US09858750
申请日：2001-05-16
申请人： Yoshifumi Aoki
发明人： Yoshifumi Aoki
IPC分类号： H03M506
CPC分类号： H04N19/1887 , H04N19/13 , H04N19/152 , H04N19/46 , H04N19/60
摘要： The present invention discloses a data stream conversion apparatus and method, a variable length coded data stream generation apparatus and method, and a camera system, the data stream conversion apparatus, comprises a first data combining means for successively combining an input variable length data and a data portion not extracted as output data portion in already input data, a data extracting means for successively extracting predetermined data portions of the predetermined data length from said successively combined data as the output data portions, and an output means for successively outputting output data of a predetermined data length based on the successively extracted output data portions.
摘要翻译：本发明公开了一种数据流转换装置和方法，可变长度编码数据流生成装置和方法以及相机系统，该数据流转换装置包括：第一数据组合装置，用于将输入可变长度数据和数据提取装置，用于从所述连续组合数据中连续提取预定数据长度的预定数据部分作为输出数据部分，以及输出装置，用于连续输出输出数据的输出数据，基于连续提取的输出数据部分的预定数据长度。

4. 发明授权

US06175319B1 Power-tailored write-current method 失效
标题翻译：电源定制写入电流方式
公开(公告)号：US06175319B1
公开(公告)日：2001-01-16
申请号：US09315565
申请日：1999-05-20
申请人： Richard Crane Schneider , Keith Gary Boyer , Norman Lee Koren
发明人： Richard Crane Schneider , Keith Gary Boyer , Norman Lee Koren
IPC分类号： H03M506
CPC分类号： H03M5/06 , G11B20/10009
摘要： A method of generating an encoded signal from a sequential stream of digital data, where the encoded signal has a non-power carrying null state and a power carrying active state with two opposing polarities. Logical one bits are distinguished from logical zero bits by inverting the encoded signal's polarity at the start of only the logical one bits. The encoded signal is set to the active state during a bit set-up period before, and held in the active state during a bit hold period after each polarity inversion. At other times the encoded signal is set to the null state. The method may include the addition of equalization pulses during strings of consecutive logical zero bits to keep the encoded signal from remaining in the null state for extended periods. Each equalization pulse may be preceded by an equalization set-up period and followed by an equalization hold period where the encoded signal is in the active state. In the preferred embodiment the set-up periods, hold periods, and equalization pulse periods are one-third the duration period of the logical bits.
摘要翻译：一种从数字数据的顺序流生成编码信号的方法，其中编码信号具有非运行无效状态和具有两个相反极性的功率传送活动状态。逻辑1比特与逻辑0比特不同，仅在逻辑1比特的起始处反转编码信号的极性。编码信号在比特建立周期之前被设置为有效状态，并且在每个极性反转之后的比特保持期间保持在活动状态。在其他时间，编码信号被设置为零状态。该方法可以包括在连续的逻辑零比特串期间添加均衡脉冲以保持编码的信号在长时间内保持在空状态。每个均衡脉冲之前可以是均衡建立周期，随后是均衡保持周期，其中编码信号处于活动状态。在优选实施例中，建立周期，保持周期和均衡脉冲周期是逻辑比特的持续时间周期的三分之一。

5. 发明授权

US06690308B2 Computer program for implementing a modulation method and a demodulation method therefor 有权
标题翻译：用于实现调制方法的计算机程序及其解调方法
公开(公告)号：US06690308B2
公开(公告)日：2004-02-10
申请号：US10400499
申请日：2003-03-28
申请人： Atsushi Hayami
发明人： Atsushi Hayami
IPC分类号： H03M506
CPC分类号： H03M5/145 , G11B20/1426 , G11B2020/143 , G11B2020/1457 , H03M7/42 , H03M7/46
摘要： A 6-bit output code word is generated in response to every 4-bit input code word by referring to a set of encoding tables. The encoding tables contain output code words assigned to input code words, and contain encoding-table designation information accompanying each output code word. The encoding-table designation information designates an encoding table among the encoding tables which is used next to generate an output code word immediately following the output code word accompanied with the encoding-table designation information. Two redundant bits are added to every prescribed number of the successive generated output code words for digital-sum-variation control. The generated output code words and the added redundant bits are sequentially connected into a redundant-bit-added output-code-word sequence which follows predetermined run length limiting rules (1, k)RLL, where “k” denotes a predetermined natural number equal to 9.
摘要翻译：通过参考一组编码表，响应于每个4位输入代码字产生6位输出代码字。编码表包含分配给输入代码字的输出代码字，并且包含伴随每个输出代码字的编码表指定信息。编码表指定信息指定编码表中的编码表，该编码表接下来用于生成紧跟在与编码表指定信息相关的输出代码字之后的输出代码字。对于用于数字和变化控制的连续生成的输出码字的每个规定数量，增加两个冗余比特。所生成的输出码字和附加的冗余比特顺序地连接到遵循预定游程长度限制规则（1，k）RLL的冗余比特相加输出码字序列中，其中“k”表示预定的自然数相等到9。

6. 发明授权

US06492918B1 Code word having data bits and code bits and method for encoding data 有权
标题翻译：具有数据位和码位的码字和用于对数据进行编码的方法
公开(公告)号：US06492918B1
公开(公告)日：2002-12-10
申请号：US09410276
申请日：1999-09-30
申请人： Francesco Rezzi , Marcus Marrow
发明人： Francesco Rezzi , Marcus Marrow
IPC分类号： H03M506
CPC分类号： H03M13/098 , G11B20/14 , G11B20/18 , H03M13/09
摘要： A code word includes a first group of data bits and includes code bits that represent a second group of data bits. One embodiment of the code word has a minimum probability of bit transitions among its bits. Another embodiment of the code word includes a parity bit. Unlike conventional codes, a code that includes such a code word can have both a high efficiency and small error propagation. Additionally, by including fewer bit transitions, a sequence of such code words causes less read noise, and thus causes fewer read errors as compared to sequences of known code words. Moreover, the code word can include a parity bit to allow improved error detection as compared to known error-detection techniques. Therefore, such a code word can significantly increase the effective write and read speeds of a disk drive.
摘要翻译：代码字包括第一组数据位，并且包括表示第二组数据位的代码位。代码字的一个实施例在其位之间具有最小的位转换概率。代码字的另一实施例包括奇偶校验位。与传统代码不同，包含这样的代码字的代码可以具有高效率和小错误传播。另外，通过包括更少的位转换，这种码字的序列导致更少的读取噪声，并且因此与已知码字的序列相比导致更少的读取错误。此外，与已知的错误检测技术相比，代码字可以包括奇偶校验位以允许改进的错误检测。因此，这样的代码字可以显着增加磁盘驱动器的有效写入和读取速度。

7. 发明授权

US06268812B1 Optical rotating recording medium, data recording method, recording apparatus and reproducing apparatus 失效
标题翻译：光学旋转记录介质，数据记录方法，记录装置和再现装置
公开(公告)号：US06268812B1
公开(公告)日：2001-07-31
申请号：US09695346
申请日：2000-10-24
申请人： Shunji Yoshimura
发明人： Shunji Yoshimura
IPC分类号： H03M506
CPC分类号： H03M7/46 , G11B20/1426 , G11B2020/1446 , H03M5/145
摘要： An optical rotating recording medium in which a 17-bit codeword is recorded converted from a 16 bit data, wherein (i) a 16-bit data word is coded to a 17-bit codeword set with restrictive conditions on a minimum number (d) of consecutive zeros, a maximum number (k) of consecutive zeros, and a maximum number (r) of consecutive “1”s in the codeword; (ii) a “1” in a codeword is converted to an inversion of “1” and “0” in recording data and a “0” in a codeword to non-inversion by non-return to zero inverse (NRZI), and (iii) a “1” and “0” in the recording data are stored linked with one of the existence of a bit on the optical rotating recording medium and two polarities of magnetization and a data recording method, a recording apparatus, and a reproducing apparatus relating to the same.
摘要翻译：一种光学旋转记录介质，其中记录从16位数据转换的17位码字，其中（i）16位数据字被编码为具有最小数目（d）的限制条件的17位码字集合，连续零的最大数目（k）和连续“0”的最大数量（r）; （ii）代码字中的“1”在记录数据中被转换为“1”和“0”，在码字中将“0”转换为非反相，不归零（NRZI），以及（iii）记录数据中的“1”和“0”与光学旋转记录介质上的位的存在和磁化的两个极性以及数据记录方法，记录装置和再现相关的设备

8. 发明授权

US06243031B1 Selectable delay circuit having immunity to variations in fabrication and operating condition for write precompensation in a read/write channel 有权
标题翻译：可选择的延迟电路具有对读/写通道中的写预补偿的制造和操作条件变化的抗扰性
公开(公告)号：US06243031B1
公开(公告)日：2001-06-05
申请号：US09528659
申请日：2000-03-20
申请人： Gani Jusuf , Pantas Sutardja
发明人： Gani Jusuf , Pantas Sutardja
IPC分类号： H03M506
CPC分类号： G11B20/10194 , H03K5/13 , H03K2005/00032 , H03K2005/00058 , H03K2005/00097 , H03L7/0812
摘要： Precompensated NRZ-encoded data for writing to magnetic storage medium operates with multiple NRZI-to-NRZ decoders that are each supplied with a selectably-variable version of a master clock. The delayed versions of the master clock are stably produced by delay elements operating with D-flip flops and charge pumps in a delay-locked feedback loop. The direction of current supplied to or from a capacitor by the charge-pump during a cycle of delayed clock signal is controlled by the delayed clock signal for shaping the feedback signal to trigger appropriately the next cycle of the delayed clock signal. The duration of the selectable delay is adjusted by setting the amplitudes of the charge and discharge currents supplied by the charge-pump. Stable delayed versions of the master clock promote reliable conversions of NRZI data to write precompensated NRZ recordable data.
摘要翻译：用于写入磁存储介质的预补偿NRZ编码数据与多个NRZI至NRZ解码器一起工作，每个NRZI至NRZ解码器都被提供有可选择的主时钟版本。主时钟的延迟版本通过延迟元件在延迟锁定反馈环路中由D触发器和电荷泵工作的延迟元件稳定地产生。在延迟的时钟信号的周期期间通过电荷泵供应到电容器的电流的方向由延迟的时钟信号控制，用于整形反馈信号以适当地触发延迟的时钟信号的下一个周期。通过设置由电荷泵提供的充电和放电电流的幅度来调节可选延迟的持续时间。主时钟的稳定延迟版本促进NRZI数据的可靠转换，以编写预补偿的NRZ可记录数据。

9. 发明授权

US06611216B1 Fast look-up table based scheme for NRZI encoding/decoding and zero insertion/removal in serial bit streams 有权
公开(公告)号：US06611216B1
公开(公告)日：2003-08-26
申请号：US10035352
申请日：2001-11-08
申请人： Rickie McDonald , Sanjeev Ukhalkar , Cai Monsson
发明人： Rickie McDonald , Sanjeev Ukhalkar , Cai Monsson
IPC分类号： H03M506
CPC分类号： G11B20/10212 , H03M5/06
摘要： A look-up table scheme for performing non-return-to-zero inverted (NRZI) encoding on input data bytes. Also disclosed is a look-up table scheme for performing zero-insertion in data streams that so require. An address is formed from an input data byte and is then used to look-up the corresponding encoded/translated byte.

10. 发明授权

US06587059B2 Code and method for encoding data 有权
标题翻译：用于编码数据的代码和方法
公开(公告)号：US06587059B2
公开(公告)日：2003-07-01
申请号：US10295411
申请日：2002-11-15
申请人： Francesco Rezzi , Marcus Marrow
发明人： Francesco Rezzi , Marcus Marrow
IPC分类号： H03M506
CPC分类号： H03M13/098 , G11B20/14 , G11B20/18 , H03M13/09
摘要： A code word includes a first group of data bits and includes code bits that represent a second group of data bits. One embodiment of the code word has a minimum probability of bit transitions among its bits. Another embodiment of the code word includes a parity bit. Unlike conventional codes, a code that includes such a code word can have both a high efficiency and small error propagation. Additionally, by including fewer bit transitions, a sequence of such code words causes less read noise, and thus causes fewer read errors as compared to sequences of known code words. Moreover, the code word can include a parity bit to allow improved error detection as compared to known error-detection techniques. Therefore, such a code word can significantly increase the effective write and read speeds of a disk drive.
摘要翻译：代码字包括第一组数据位，并且包括表示第二组数据位的代码位。代码字的一个实施例在其位之间具有最小的位转换概率。代码字的另一实施例包括奇偶校验位。与传统代码不同，包含这样的代码字的代码可以具有高效率和小错误传播。另外，通过包括更少的位转换，这种码字的序列导致更少的读取噪声，并且因此与已知码字的序列相比导致更少的读取错误。此外，与已知的错误检测技术相比，代码字可以包括奇偶校验位以允许改进的错误检测。因此，这样的代码字可以显着增加磁盘驱动器的有效写入和读取速度。

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