公开(公告)号：US5322773A

公开(公告)日：1994-06-21

申请号：US49664

申请日：1993-04-21

申请人： Tetsuo Kaneko ,  Tadashi Kojima ,  Tamotsu Kuwata ,  Yoshiro Yamamoto

发明人： Tetsuo Kaneko ,  Tadashi Kojima ,  Tamotsu Kuwata ,  Yoshiro Yamamoto

IPC分类号： A23C21/02 ,  A23J3/08 ,  A23J3/34 ,  C12P21/04 ,  C12P21/06 ,  C12P21/00 ,  A23C9/12 ,  C12N9/50 ,  C12N9/56 ,  C12N9/58 ,  C12N9/62

CPC分类号： A23J3/343 ,  A23V2002/00

摘要： This invention relates to a method of selectively degrading .beta.-lactoglobulin contained in cow's milk-serum protein by using a specific enzyme capable of selectively degrading .beta.-lactoglobulin.

摘要翻译： 本发明涉及通过使用能够选择性降解β-乳球蛋白的特异性酶来选择性降解牛奶 - 血清蛋白中所含β-乳球蛋白的方法。

公开(公告)号：USRE34455E

公开(公告)日：1993-11-23

申请号：US277469

申请日：1988-11-23

申请人： Norikazu Arai ,  Shozo Ishiyama ,  Tadashi Kojima

发明人： Norikazu Arai ,  Shozo Ishiyama ,  Tadashi Kojima

IPC分类号： G02B13/18 ,  G11B7/135

CPC分类号： G11B7/1374 ,  G02B13/18

摘要： A large-aperture single lens with aspherical surfaces to be used as a pickup lens for video disks, especially for tracking the video disk by directly moving the pickup lens. It is preferable that the single lens is made of plastic material in order to make it compact and light in weight. Both refractive surfaces of the single lens are arranged to have positive refractive powers in order to make the working distance of the lens long. Spherical aberration of the single lens is corrected to the degree that the diameter of the circle of confusion thereof is decided approximately by diffraction of light. Both refractive surfaces of the single lens are formed as aspherical surfaces and the shapes of the refractive surfaces are determined so as to correct aberrations including the sine condition to the required range, by taking the error to be caused at the time of manufacture into consideration.

公开(公告)号：US4860272A

公开(公告)日：1989-08-22

申请号：US99384

申请日：1987-09-21

申请人： Meisei Nishikawa ,  Jun Inagawa ,  Takeshi Inagaki ,  Toshihiko Kaneshige ,  Yasuhiro Hayashi ,  Tadashi Kojima

发明人： Meisei Nishikawa ,  Jun Inagawa ,  Takeshi Inagaki ,  Toshihiko Kaneshige ,  Yasuhiro Hayashi ,  Tadashi Kojima

IPC分类号： G11B7/005 ,  G11B7/09 ,  G11B19/04 ,  G11B20/10 ,  G11B20/18

CPC分类号： G11B20/10527 ,  G11B19/04 ,  G11B20/1809 ,  G11B7/005 ,  G11B7/0946 ,  G11B2020/10759

摘要： An apparatus for reproducing data stored on a disc in a plurality of tracks connected in a continuous spiral or separated in concentric tracks. The apparatus includes a device for rotating the disc, an optical pickup device aligned with one of the tracks for reading the data from the track, the pickup being subject to jump movement of alignment with the track into alignment with another track in response to movement of the device, a buffer memory device temporarily storing successive portions of the data read from the track for delaying reproduction of the data for a predetermined time after the reading of the data, a track jump detection device for detecting movement of the pickup device into alignment with anothr track and interrupting temporary storage of the data read from the other track by the buffer memory device, a drive device for moving the pickup device with respect to the disc for reading data, and for changing the alignment of the pickup device from the other track to the one track in response to the track jump detection device, and an output device for substantially uninterrupted reproduction of the temporarily stored data.

摘要翻译： 一种用于再现以连续螺旋连接或以同心轨道分离的多个轨道中存储在盘上的数据的装置。 该设备包括用于旋转盘的装置，与轨道之一对准的光学拾取装置，用于从轨道读取数据，拾取器经受与轨道对准的跳跃运动，以响应于另一轨迹的移动而对准 所述装置，缓冲存储装置临时存储从所述轨道读取的数据的连续部分，用于在所述数据读取之后的预定时间内延迟所述数据的再现;轨迹跳跃检测装置，用于检测所述拾取装置的移动与 无条件跟踪和中断由缓冲存储器装置从另一轨道读取的数据的暂时存储，用于相对于盘读取数据移动拾取装置的驱动装置，以及用于改变拾取装置与另一轨道的对准 响应于轨道跳跃检测装置到一个轨道，以及用于暂时地基本上不间断再现的输出装置 重载数据。

公开(公告)号：US4830475A

公开(公告)日：1989-05-16

申请号：US131266

申请日：1987-12-09

申请人： Shozo Ishiyama ,  Tadashi Kojima ,  Makoto Banno

发明人： Shozo Ishiyama ,  Tadashi Kojima ,  Makoto Banno

IPC分类号： G02B15/16 ,  G02B7/10 ,  G02B15/14 ,  G02B15/20 ,  G02B15/22

CPC分类号： G02B15/14 ,  G02B7/10

摘要： When a zoom lens system is focused by moving a lens other than the foremost lens group, the advancing amount of the focusing lens varies according to the variation in the focal length even whyen focusing on an object at the same object distance. When a zoom lens system is zoomed to a certain focal length, the object distance and advancing amount of the focusing lens has a relationship expressed by a function resembling a logarithmic function. The present invention enables one to focus a zoom lens system using only one movement amount curve by arranging to move the focusing lens along the movement amount curve, utilizing different portions of the movement amount curve according to the amount of zooming.

摘要翻译： 当通过移动除了最前面的透镜组之外的透镜来聚焦变焦透镜系统时，聚焦透镜的前进量根据焦距的变化而变化，甚至是在相同物体距离上的对象上进行聚焦。 当变焦透镜系统被放大到特定焦距时，聚焦透镜的物体距离和前进量具有由类似于对数函数的函数表示的关系。 本发明使得能够通过根据变焦量利用移动量曲线的不同部分来布置沿着移动量曲线移动聚焦透镜，仅使用一个移动量曲线来聚焦变焦透镜系统。

公开(公告)号：US4608692A

公开(公告)日：1986-08-26

申请号：US647919

申请日：1984-09-06

申请人： Masahide Nagumo ,  Tadashi Kojima ,  Jun Inagawa

发明人： Masahide Nagumo ,  Tadashi Kojima ,  Jun Inagawa

IPC分类号： H03M13/15 ,  G06F11/10

CPC分类号： H03M13/151

摘要： An error correction circuit in which an error location polynomial is determined on the basis of the code word of the code of a double correction BCH symbol in Galois field GF(2.sup.m), thereby determining the error location and error pattern necessary for the error correction. The error correction circuit includes: (a) means for generating a syndrome S.sub.i (i being an integer) from the code word: (b) first and second means for holding S.sub.1 and S.sub.0 out of the syndromes outputted from the syndrome generating means; (c) means for effecting the following calculation on the basis of the syndrome generated by the syndrome generating means:r.sub.3 =S.sub.2 S.sub.0 +S.sub.1.sup.2r.sub.2 =S.sub.3 S.sub.0 +S.sub.1 S.sub.2r.sub.1 =S.sub.3 S.sub.1 +S.sub.2.sup.2third means for holding r.sub.3 out of r.sub.3, r.sub.2 and r.sub.1 ; (d) means for judging whether r.sub.3 out of r.sub.3, r.sub.2 and r.sub.1 satisfy the condition: r.sub.3 .noteq.0 or r.sub.3 =0; (e) a control means for making, when the condition: r.sub.3 .noteq.0 is confirmed by the judging means, the first and second holding means holding r.sub.1 and r.sub.2 in place of S.sub.1 ad S.sub.0 ; and (f) means for processing signals, which is adapted to add a value obtained through multiplying the content S.sub.1 or r.sub.1 of the first holding means and the content S.sub.0 or r.sub.2 of the second holding means by the element .alpha..sup.i of the Galois field GF(2.sup.m) to a value of the third holding means with .alpha..sup.2i, whereby the element .alpha..sup.i as obtained when the output from the signal processing means is reduced to zero is used as the error location.

摘要翻译： 一种误差校正电路，其中基于伽罗瓦域GF（2m）中的双校正BCH码元的码的码字来确定误差位置多项式，从而确定纠错所需的误差位置和误差模式。 误差校正电路包括：（a）从码字产生校正子Si（i为整数）的装置：（b）用于从校正子发生装置输出的校正子中保持S1和S0的第一和第二装置; （c）基于由校正子产生装置产生的校正子进行以下计算的装置：r3 = S2S0 + S12r2 = S3S0 + S1S2 r1 = S3S1 + S22用于将r3保持在r3，r2和r1之外的第三装置; （d）用于判断r3，r2和r1中的r3是否满足条件：r3 NOTEQUAL 0或r3 = 0; （e）控制装置，当判断装置确认条件：r3 NOTEQUAL 0时，保持r1和r2的第一和第二保持装置代替S1广告S0; （f）用于处理信号的装置，其适于将通过将第一保持装置的内容S1或r1与第二保持装置的内容S0或r2相乘得到的值加上伽罗瓦域GF的元素αi （2m）到具有α2i的第三保持装置的值，由此将来自信号处理装置的输出减少为零时获得的元素αi用作错误位置。

公开(公告)号：US4567568A

公开(公告)日：1986-01-28

申请号：US473767

申请日：1983-03-10

申请人： Jun Inagawa ,  Masahide Nagumo ,  Tadashi Kojima

发明人： Jun Inagawa ,  Masahide Nagumo ,  Tadashi Kojima

IPC分类号： G06F11/10 ,  G06F1/03 ,  G06F7/72 ,  G11B20/18 ,  H03M13/15 ,  G06F7/52

CPC分类号： G06F7/726 ,  G11B20/1809 ,  H03M13/15 ,  G06F1/0307

摘要： Data representing one element .alpha..sup.i of a Galois field GF(2.sup.m) are stored in a first linear shift register, and data representing another element .alpha..sup.j of the Galois field GF(2.sup.m) are stored in a second linear shift register. 2.sup.m elements of Galois field GF(2.sup.m) are divided into n groups. A table of the reciprocals of n elements located at specific positions respectively in n groups is stored in a converter which includes a decoder and an encoder. The data representing element .alpha..sup.j are supplied from the second linear shift register to the decoder. If the data representing the reciprocal of element .alpha..sup.j are stored in the converter, they are read from the encoder. If they are not stored in the converter, the first linear shift register and the second linear shift register are shifted N times by control pulses generated by a NOR gate and an AND gate until any one of the reciprocal data are read from the encoder, whereby the register supplies data representing .alpha..sup.i+N and the register supplies data representing .alpha..sup.- (j+N). A multiplier multiplies element .alpha..sup.i by reciprocal .alpha..sup.j or multiplies element .alpha..sup.i+N by reciprocal .alpha..sup.-(j+N), thereby performing the division: a.sup.i .div..alpha..sup.j (=.alpha..sup.i-j).

摘要翻译： 表示伽罗瓦域GF（2m）的一个元素αi的数据被存储在第一线性移位寄存器中，并且表示伽罗瓦域GF（2m）的另一元素αj的数据被存储在第二线性移位寄存器中。 伽罗瓦域GF（2m）的2m元素分为n组。 分别位于n组的特定位置的n个元件的倒数表存储在包括解码器和编码器的转换器中。 表示元素αj的数据从第二线性移位寄存器提供给解码器。 如果表示元素αj的倒数的数据存储在转换器中，则从编码器读取它们。 如果它们不存储在转换器中，则通过由或非门和与门产生的控制脉冲将第一线性移位寄存器和第二线性移位寄存器移位N次，直到从编码器读取任何一个倒数数据，由此 寄存器提供表示αi + N的数据，寄存器提供表示α - （j + N）的数据。 乘法器将元素αi乘以相等的αj或乘以元素αi + N通过倒数α - （j + N），从而执行除法：ai DIVIDEDαj（=αi-j）。

公开(公告)号：US4502024A

公开(公告)日：1985-02-26

申请号：US473763

申请日：1983-03-10

申请人： Meisei Nishikawa ,  Masahide Nagumo ,  Tadashi Kojima

发明人： Meisei Nishikawa ,  Masahide Nagumo ,  Tadashi Kojima

IPC分类号： G11B7/00 ,  G11B19/24 ,  H03K7/08

CPC分类号： G11B19/24 ,  H03K7/08

摘要： The invention provides a pulse-width modulation circuit in which an output from a latch circuit for holding a count obtained by counting a reference clock signal in accordance with the period of a signal to be modulated is compared by a comparator with an output from a ramp counter for counting the reference clock signal at a predetermined period so as to perform a pulse-width modulation. The number of bits of the comparator and the ramp counter is decreased by n bits with respect to the number N (N>n) of bits of the latch circuit.

摘要翻译： 本发明提供了一种脉冲宽度调制电路，其中来自锁存电路的输出用于保持根据待调制信号的周期对参考时钟信号进行计数而获得的计数，通过比较器与斜坡的输出进行比较 计数器，用于以预定周期对参考时钟信号进行计数，以执行脉宽调制。 比较器和斜坡计数器的位数相对于锁存电路的位数N（N> n）减少n位。

公开(公告)号：US4451920A

公开(公告)日：1984-05-29

申请号：US324816

申请日：1981-11-25

申请人： Susumu Hoshimi ,  Tadashi Kojima

发明人： Susumu Hoshimi ,  Tadashi Kojima

IPC分类号： H03M13/00 ,  G11B20/18 ,  H03M13/27 ,  H04B14/04 ,  G06F11/10 ,  G11B5/00

CPC分类号： G11B20/1809

摘要： A PCM signal processing apparatus adapted to receive successive transmission blocks, each of which comprise time-interleaved PCM data, error correction and error detection words. The apparatus has detecting means responsive to the error detection words for detecting errors in a received transmission block and error identifying means for identifying errors in each of the time-interleaved words included in the received transmission block which has been detected. A de-interleaver is provided for time-deinterleaving each received transmission block to recover a de-interleaved block comprising de-interleaved PCM and error-correction words, with errors in the de-interleaved words being respectively identified. A syndrome generating device is coupled to the de-interleaver for generating error syndromes using the de-interleaved PCM and error-correction words in the de-interleaved block. An error correcting device responsive to the error syndromes corrects erroneous PCM words in the de-interleaved block as a function of the remaining error free PCM and the error-correction words in the de-interleaved block. An error compensating device is responsive to the identification of errors by the error identifying device and compensates the erroneous PCM words in the de-interleaved block with a substitute PCM word when error correction by said error correcting device is impossible. An inhibit device inhibits the error correcting device when all of the error detection words in the de-interleaved block are identified as erroneous and it discontinues inhibiting when the relationship between the identification by the error identifying device and the error syndrome indicates that no error exists.

摘要翻译： PCM信号处理装置，适于接收连续的传输块，每个发送块包括时间交织的PCM数据，纠错和错误检测字。 该装置具有响应于用于检测接收到的传输块中的错误的错误检测字的检测装置和用于识别已经检测到的所接收的发送块中包括的每个时间交织字中的错误的错误识别装置。 提供去交错器用于对每个接收到的传输块进行时间去交织以恢复包括解交织的PCM和纠错字的解交织块，其中分别对每个已解交织的字中的错误进行识别。 校正子产生装置被耦合到解交织器，用于使用解交织块中的解交织PCM和纠错字产生误差综合征。 响应于错误综合征的纠错装置根据解交织块中的剩余无错PCM和纠错字校正解交织块中的错误PCM字。 误差补偿装置响应错误识别装置的错误识别，并且在由错误校正装置进行纠错是不可能的情况下用替代PCM字补偿解交织块中的错误PCM字。 当解交织块中的所有错误检测字被识别为错误时，禁止装置禁止纠错装置，并且当错误识别装置的识别与错误校正之间的关系表示没有错误存在时，禁止装置停止禁止。

公开(公告)号：US4446490A

公开(公告)日：1984-05-01

申请号：US322279

申请日：1981-11-17

申请人： Susumu Hoshimi ,  Tadashi Kojima

发明人： Susumu Hoshimi ,  Tadashi Kojima

IPC分类号： G11B27/02 ,  G11B5/09 ,  G11B20/10 ,  G11B27/032 ,  G11B27/32 ,  G11B5/00

CPC分类号： G11B5/09 ,  G11B27/032 ,  G11B27/323 ,  G11B2220/90

摘要： A PCM signal processor having a signal input terminal which receives a PCM data signal, a memory for storing the PCM data signal, a standardized signal input terminal for providing a standardized signal corresponding to a synchronizing signal for synchronizing the PCM data signal reproducing apparatus, an address counter for designating the address of the memory which is to be read and means for providing said address counter with preset data in response to the standardized signal.

摘要翻译： 一种具有接收PCM数据信号的信号输入端的PCM信号处理器，存储PCM数据信号的存储器，用于提供与用于同步PCM数据信号再现装置的同步信号相对应的标准化信号的标准化信号输入端， 用于指定要读取的存储器的地址的地址计数器，以及响应于标准化信号向所述地址计数器提供预置数据的装置。

公开(公告)号：US4403263A

公开(公告)日：1983-09-06

申请号：US206833

申请日：1980-11-14

申请人： Satoshi Kageyama ,  Tadashi Kojima ,  Shigeru Todokoro

发明人： Satoshi Kageyama ,  Tadashi Kojima ,  Shigeru Todokoro

IPC分类号： H04L1/00 ,  G11B20/18 ,  H04B14/04 ,  G11B5/00 ,  G11B5/09

CPC分类号： G11B20/1809

摘要： A processing system for reproduced audio digital signals used in an audio PCM (pulse code modulation) recording/reproducing system using a recording/reproducing apparatus such as a video tape recorder having a dropout-compensation circuit is disclosed. The reproduced signal processing system is connected to receive digital information signals reproduced through the dropout compensation circuit from a recording medium on which audio information signals are recorded in the form of digital data words and includes circuit means for detecting whether a reproduced digital signal is dropout-compensated or not and circuit means for adding an error pointer to a reproduced digital signal which is detected as being dropout-compensated.

摘要翻译： 公开了一种用于使用诸如具有压差补偿电路的录像机的记录/再现装置的音频PCM（脉冲编码调制）记录/再现系统中使用的再现音频数字信号的处理系统。 再现信号处理系统被连接以从数字数据字的形式记录音频信息信号的记录介质接收通过压差补偿电路再现的数字信息信号，并且包括用于检测再现的数字信号是否出错的电路装置， 补偿或不补偿电路装置，用于将误差指针加到被检测为退出补偿的再现数字信号中。