专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20070177479A1 Information reproducing apparatus and information reproducing method 审中-公开
标题翻译：信息再现装置和信息再现方法
公开(公告)号：US20070177479A1
公开(公告)日：2007-08-02
申请号：US11498792
申请日：2006-08-04
申请人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Takayuki Mori , Takahiro Nango , Toshihiko Kaneshige
发明人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Takayuki Mori , Takahiro Nango , Toshihiko Kaneshige
IPC分类号： G11B20/10
CPC分类号： G11B20/10166 , G11B20/1012 , G11B20/10203 , G11B2220/213 , G11B2220/2579
摘要： An information reproducing apparatus reads information recorded on a recording medium and outputs a reproduced signal, and performs, for the reproduced signal, analog offset correction of correcting offset before AD conversion, digital offset correction of correcting offset after AD conversion, and offset detection of detecting an offset control amount from a corrected reproduced signal after the digital offset correction. Further, the information reproducing apparatus divides offset data indicating the detected offset control amount into first offset data of a least significant bit unit for the AD conversion of the reproduced signal or greater and second offset data less than the least significant bit unit so as to perform the digital offset correction using the first offset data and perform the analog offset correction using the second offset data.
摘要翻译：信息再现装置读取记录在记录介质上的信息并输出再生信号，并对再生信号进行AD转换前校正偏移的模拟偏移校正，AD转换后校正偏移的数字偏移校正，检测偏移检测来自在数字偏移校正之后的校正再现信号的偏移控制量。此外，信息再现装置将指示检测到的偏移控制量的偏移数据分割成用于重放信号的AD转换的最低有效位单元的第一偏移数据或小于最低有效位单元的大和第二偏移数据，以执行使用第一偏移数据进行数字偏移校正，并使用第二偏移数据执行模拟偏移校正。

2. 发明申请

US20080030386A1 INTEGRATED CIRCUIT, SELF-TEST METHOD FOR THE INTEGRATED CIRCUIT, AND OPTICAL DISC APPARATUS INCLUDING THE INTEGRATED CIRCUIT 失效
标题翻译：集成电路的集成电路，自检电路的自检方法以及包含集成电路的光盘设备
公开(公告)号：US20080030386A1
公开(公告)日：2008-02-07
申请号：US11830705
申请日：2007-07-30
申请人： Hideyuki Yamakawa , Yukiyasu Tatsuzawa , Takayuki Mori , Takahiro Nango
发明人： Hideyuki Yamakawa , Yukiyasu Tatsuzawa , Takayuki Mori , Takahiro Nango
IPC分类号： H03M1/10
CPC分类号： H03M1/1071
摘要： An integrated circuit includes an AD converter and a self-test circuit configured to test the AD converter. The self-test circuit includes a clock generator which generates a clock for allowing the AD converter to AD-convert an external sine wave signal externally input, a sine wave generator which generates an internal sine wave signal in digital form, a subtractor which determines a differential signal between the AD-converted external sine wave signal and the internal sine wave signal, a PLL device which allows a phase-locked loop receiving the differential signal as an input to control a phase of the internal sine wave signal such that the internal sine wave signal is in phase with the external sine wave signal, and a root mean square calculator which calculates a root mean square of the differential signal to generate a diagnostic signal corresponding to the AD converter.
摘要翻译：集成电路包括AD转换器和被配置为测试AD转换器的自检电路。自检电路包括时钟发生器，其产生用于允许AD转换器对外部输入的外部正弦波信号进行AD转换的时钟，产生数字形式的内部正弦波信号的正弦波发生器，确定 AD转换外部正弦波信号和内部正弦波信号之间的差分信号，允许锁相环接收差分信号作为输入的PLL器件，以控制内部正弦波信号的相位，使得内部正弦波波信号与外部正弦波信号同相，以及均方根计算器，其计算差分信号的均方根以产生对应于AD转换器的诊断信号。

3. 发明授权

US07466253B2 Integrated circuit, self-test method for the integrated circuit, and optical disc apparatus including the integrated circuit 失效
标题翻译：集成电路，集成电路的自检方法以及包括集成电路的光盘装置
公开(公告)号：US07466253B2
公开(公告)日：2008-12-16
申请号：US11830705
申请日：2007-07-30
申请人： Hideyuki Yamakawa , Yukiyasu Tatsuzawa , Takayuki Mori , Takahiro Nango
发明人： Hideyuki Yamakawa , Yukiyasu Tatsuzawa , Takayuki Mori , Takahiro Nango
IPC分类号： H03M1/10
CPC分类号： H03M1/1071
摘要： An integrated circuit includes an AD converter and a self-test circuit configured to test the AD converter. The self-test circuit includes a clock generator which generates a clock for allowing the AD converter to AD-convert an external sine wave signal externally input, a sine wave generator which generates an internal sine wave signal in digital form, a subtractor which determines a differential signal between the AD-converted external sine wave signal and the internal sine wave signal, a PLL device which allows a phase-locked loop receiving the differential signal as an input to control a phase of the internal sine wave signal such that the internal sine wave signal is in phase with the external sine wave signal, and a root mean square calculator which calculates a root mean square of the differential signal to generate a diagnostic signal corresponding to the AD converter.
摘要翻译：集成电路包括AD转换器和被配置为测试AD转换器的自检电路。自检电路包括时钟发生器，其产生用于允许AD转换器对外部输入的外部正弦波信号进行AD转换的时钟，产生数字形式的内部正弦波信号的正弦波发生器，确定 AD转换外部正弦波信号和内部正弦波信号之间的差分信号，允许锁相环接收差分信号作为输入的PLL器件，以控制内部正弦波信号的相位，使得内部正弦波波信号与外部正弦波信号同相，以及均方根计算器，其计算差分信号的均方根以产生对应于AD转换器的诊断信号。

4. 发明申请

US20070025212A1 Optical disk apparatus and optical disk reproducing method 审中-公开
标题翻译：光盘装置和光盘再现方法
公开(公告)号：US20070025212A1
公开(公告)日：2007-02-01
申请号：US11493514
申请日：2006-07-27
申请人： Yukiyasu Tatsuzawa , Takahiro Nango , Hideyuki Yamakawa , Koichi Otake , Toshihiko Kaneshige , Hiroaki Morino
发明人： Yukiyasu Tatsuzawa , Takahiro Nango , Hideyuki Yamakawa , Koichi Otake , Toshihiko Kaneshige , Hiroaki Morino
IPC分类号： G11B15/52
CPC分类号： G11B20/1833 , G11B7/0053 , G11B20/1217 , G11B20/18 , G11B2020/122 , G11B2020/1287 , G11B2220/2537 , G11B2220/2579
摘要： According to one embodiment, there is provided an optical disk apparatus including a detecting unit which reads a reflective light from an optical disk and outputs a read signal, a decoder which decodes the read signal from the detecting unit, an extracting unit which extracts from the read signal the first and second specification information of the same content recorded in first and second areas on the optical disk, a processor which compares the first specification information with the second specification information and processes the specification information based on the comparison result, and a controller which controls the detecting unit or the decoder, based on the specification information processed by the processor.
摘要翻译：根据一个实施例，提供了一种光盘装置，包括：检测单元，其从光盘读取反射光并输出读取信号;解码器，其对来自检测单元的读取信号进行解码;提取单元，其从读取信号记录在光盘上的第一和第二区域中记录的相同内容的第一和第二规格信息;处理器，其将第一规格信息与第二规格信息进行比较，并根据比较结果处理规格信息;以及控制器其基于由处理器处理的规格信息来控制检测单元或解码器。

5. 发明申请

US20060005110A1 Data processing apparatus and method 审中-公开
标题翻译：数据处理装置及方法
公开(公告)号：US20060005110A1
公开(公告)日：2006-01-05
申请号：US11168305
申请日：2005-06-29
申请人： Takahiro Nango , Yukiyasu Tatsuzawa
发明人： Takahiro Nango , Yukiyasu Tatsuzawa
IPC分类号： H03M13/00
CPC分类号： G11B20/1866 , H03M13/151 , H03M13/159 , H03M13/2909
摘要： A data processing apparatus may include a memory unit which stores information including sync frame data, a preceding calculation system circuit which makes a syndrome calculation from the information including sync frame data, a retry calculation system circuit which makes a syndrome calculation from information stored in the memory unit, a buffer group which stores a calculation result of the preceding calculation system circuit or that of the retry calculation system circuit, and a correction execution process system circuit which executes error correction for the information including sync frame data according to the calculation result stored in the buffer group.
摘要翻译：数据处理装置可以包括存储单元，其存储包括同步帧数据的信息，从包括同步帧数据的信息进行校正子计算的先前计算系统电路，从存储在所述同步帧数据中的信息进行校正子计算的重试计算系统电路存储单元，存储前一个计算系统电路的计算结果或重试计算系统电路的计算结果的缓冲器组以及根据存储的计算结果执行包括同步帧数据的信息的纠错执行处理系统电路在缓冲组中。

6. 发明申请

US20080002541A1 RECORDING APPARATUS AND RECORD LEARNING METHOD 审中-公开
标题翻译：记录装置和记录学习方法
公开(公告)号：US20080002541A1
公开(公告)日：2008-01-03
申请号：US11766398
申请日：2007-06-21
申请人： Hiroaki MORINO , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Takahiro Nango , You Yoshioka
发明人： Hiroaki MORINO , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Takahiro Nango , You Yoshioka
IPC分类号： G11B5/09
CPC分类号： G11B7/00456
摘要： There is provided a recording apparatus which modulates record data by a predetermined modulation method and records record patterns corresponding to the record data on an optical disk, including a random data generator which generates random data as the record data, a data exchange processor which performs exchange processing on the random data so as to equalize a frequency of appearance of each of the record patterns relative to the entire record patterns on the optical disk corresponding to the respective random data, a modulator which modulates the random data subjected to the exchange processing by the predetermined modulation method, an optical head which records record patterns corresponding to the modulated random data on the optical disk, and reproduces the modulated random data from the recorded record patterns, and a record learning unit which calculates correction amounts for recorded positions of the respective record patterns based on the reproduced random data.
摘要翻译：提供了一种记录装置，其通过预定的调制方法对记录数据进行调制，并将与记录数据相对应的记录模式记录在光盘上，该光盘包括产生作为记录数据的随机数据的随机数据发生器，执行交换的数据交换处理器对随机数据进行处理，以便相对于与各个随机数据相对应的光盘上的整个记录图形来均衡每个记录图案的出现频率，调制器，其通过由该随机数据进行交换处理的随机数据进行调制预定的调制方法，记录与光盘上调制的随机数据相对应的记录图形的光头，并从所记录的记录图形中再现调制的随机数据;以及记录学习单元，计算各个记录的记录位置的校正量基于再现的随机数据的图案。

7. 发明申请

US20080002533A1 Information recording and reproducing apparatus, and information recording and reproducing method 审中-公开
标题翻译：信息记录和再现装置以及信息记录和再现方法
公开(公告)号：US20080002533A1
公开(公告)日：2008-01-03
申请号：US11821207
申请日：2007-06-22
申请人： Takahiro Nango , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Toshifumi Yamamoto , You Yoshioka , Hiroaki Morino
发明人： Takahiro Nango , Koichi Otake , Yukiyasu Tatsuzawa , Hiroyuki Moro , Toshifumi Yamamoto , You Yoshioka , Hiroaki Morino
IPC分类号： G11B20/18
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10046 , G11B20/10055 , G11B20/10222 , G11B20/10296 , G11B20/1426 , G11B2020/1287 , G11B2020/1469
摘要： According to one embodiment, in an information recording and reproducing apparatus, a record data correction unit generates correction data for correcting a record waveform generated according to record data. Further, the information recording and reproducing apparatus generates discrimination data for use in pattern discrimination performed to generate the correction data, using decoded data outputted from a PRML signal processing unit and the record data, and outputs the generated discrimination data to the record data correction unit.
摘要翻译：根据一个实施例，在信息记录和再现装置中，记录数据校正单元产生用于校正根据记录数据产生的记录波形的校正数据。此外，信息记录和再现装置使用从PRML信号处理单元输出的解码数据和记录数据产生用于产生校正数据的模式识别中使用的鉴别数据，并将产生的鉴别数据输出到记录数据校正单元。

8. 发明授权

US07379408B2 Disk apparatus and method using plural tap coefficient equalization 有权
标题翻译：使用多个抽头系数均衡的磁盘装置和方法
公开(公告)号：US07379408B2
公开(公告)日：2008-05-27
申请号：US11012066
申请日：2004-12-15
申请人： Yukiyasu Tatsuzawa , Koichi Otake , Hideyuki Yamakawa , Hiroyuki Moro , Toshihiko Kaneshige
发明人： Yukiyasu Tatsuzawa , Koichi Otake , Hideyuki Yamakawa , Hiroyuki Moro , Toshihiko Kaneshige
IPC分类号： G11B7/00
CPC分类号： G11B20/10212 , G11B20/10046 , G11B20/10111 , G11B20/10333
摘要： A disk apparatus has an equalizing unit which performs PR equalization for the read signal from the disk based on a plurality of tap coefficients, a decoding unit which performs a decoding process for the equalized read signal, a calculating unit which obtains an ideal signal of the decoded read signal, and compares the ideal signal with the decoded read signal, thereby calculating an error signal E, and a control unit which groups the tap coefficients into at least a first and second coefficient groups which are groups of tap coefficients at symmetrical locations each, and determines tap coefficients of the first coefficient group in a range of a first limit value K1 according to the calculated error signal, determines tap coefficients of the second coefficient group in a range of a second limit value and supplies the determined tap coefficients to the equalizing unit.
摘要翻译：盘装置具有均衡单元，其基于多个抽头系数对来自盘的读取信号进行PR均衡，对均衡的读取信号执行解码处理的解码单元，获得均衡的读取信号的理想信号的计算单元并且将理想信号与解码的读取信号进行比较，从而计算误差信号E，以及控制单元，其将抽头系数分组为至少第一和第二系数组，每个系数组是每个对称位置的抽头系数组并且根据计算出的误差信号确定第一限制值K 1的范围内的第一系数组的抽头系数，在第二限制值的范围内确定第二系数组的抽头系数，并将确定的抽头系数提供给均衡单位。

9. 发明申请

US20050141378A1 Disk apparatus and disk reproducing method 有权
标题翻译：磁盘装置和磁盘再现方法
公开(公告)号：US20050141378A1
公开(公告)日：2005-06-30
申请号：US11012066
申请日：2004-12-15
申请人： Yukiyasu Tatsuzawa , Koichi Otake , Hideyuki Yamakawa , Hiroyuki Moro , Toshihiko Kaneshige
发明人： Yukiyasu Tatsuzawa , Koichi Otake , Hideyuki Yamakawa , Hiroyuki Moro , Toshihiko Kaneshige
IPC分类号： G11B20/14 , G11B5/58 , G11B7/004 , G11B7/005 , G11B7/095 , G11B20/10 , G11B20/18
CPC分类号： G11B20/10212 , G11B20/10046 , G11B20/10111 , G11B20/10333
摘要： A disk apparatus has an equalizing unit which performs PR equalization for the read signal from the disk based on a plurality of tap coefficients, a decoding unit which performs a decoding process for the equalized read signal, a calculating unit which obtains an ideal signal of the decoded read signal, and compares the ideal signal with the decoded read signal, thereby calculating an error signal E, and a control unit which groups the tap coefficients into at least a first and second coefficient groups which are groups of tap coefficients at symmetrical locations each, and determines tap coefficients of the first coefficient group in a range of a first limit value K1 according to the calculated error signal, determines tap coefficients of the second coefficient group in a range of a second limit value and supplies the determined tap coefficients to the equalizing unit.
摘要翻译：盘装置具有均衡单元，其基于多个抽头系数对来自盘的读取信号进行PR均衡，对均衡的读取信号执行解码处理的解码单元，获得均衡的读取信号的理想信号的计算单元并且将理想信号与解码的读取信号进行比较，从而计算误差信号E，以及控制单元，其将抽头系数分组为至少第一和第二系数组，每个系数组是每个对称位置的抽头系数组并且根据计算出的误差信号确定第一限制值K 1的范围内的第一系数组的抽头系数，在第二限制值的范围内确定第二系数组的抽头系数，并将确定的抽头系数提供给均衡单位。

10. 发明申请

US20080019249A1 APPARATUS FOR REPRODUCING DATA ON RECORDING MEDIUM AND METHOD FOR REPRODUCING DATA ON THE MEDIUM 审中-公开
标题翻译：用于在记录介质上再现数据的装置和用于在介质上再现数据的方法
公开(公告)号：US20080019249A1
公开(公告)日：2008-01-24
申请号：US11771906
申请日：2007-06-29
申请人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Norikatsu Chiba , Yasuhiro Kanishima , Toshifumi Yamamoto , Toshihiko Kaneshige
发明人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Norikatsu Chiba , Yasuhiro Kanishima , Toshifumi Yamamoto , Toshihiko Kaneshige
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10212 , G11B20/10296
摘要： An apparatus for reproducing digital data recorded on a recording medium by a Partial Response Maximum Likelihood method, the digital data being recorded in a code pattern in which the same code continuously appears at least two times, includes an analog-to-digital converting unit that samples an analog reproduction signal recorded on the recording medium and converts the sampled analog reproduction signal into a digital signal; a sampling rate switching unit that adaptively switches the sampling rate in the analog-to-digital converting unit from a higher rate to a lower rate; and a data demodulating unit that reproduces and demodulates the digital signal subjected to the analog-to-digital conversion in the analog-to-digital converting unit by the Partial Response Maximum Likelihood method in accordance with the switching between the higher rate and the lower rate.
摘要翻译：一种用于通过部分响应最大似然方法再现记录在记录介质上的数字数据的装置，所述数字数据以相同代码连续出现至少两次的代码模式被记录，包括模数转换单元，模数转换单元采样记录在记录介质上的模拟再现信号，并将采样的模拟再现信号转换为数字信号; 采样率切换单元，其自适应地将模数转换单元中的采样率从较高速率切换到较低速率; 以及数据解调单元，其通过部分响应最大似然方法根据较高速率和较低速率之间的切换再现和解调在模数转换单元中经受模数转换的数字信号。

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