公开(公告)号：US07043680B2

公开(公告)日：2006-05-09

申请号：US09969766

申请日：2001-10-04

申请人： Masami Aizawa

发明人： Masami Aizawa

IPC分类号： H03M13/45 ,  G08C15/02

CPC分类号： H04L27/2647

摘要： A receiving apparatus includes a demodulation circuit which estimates a transfer function of a reception signal in which a time domain has been converted into a frequency domain and demodulates the reception signal according to a demodulation method corresponding to the estimated transfer function, a reliability determining circuit which determines the reliability of the demodulation signal based on the transfer function estimated by the demodulation circuit, a variation detecting circuit which detects a variation amount of the demodulation signal on a frequency base, time base, a de-mapping circuit which subjects the demodulation signal to a de-mapping process and in which the contents of the de-mapping process are changed according to the result of determination in the reliability determining circuit and the result of detection in the variation detecting circuit, an error correction circuit which makes error correction based on the signal subjected to the de-mapping process.

公开(公告)号：US06900559B2

公开(公告)日：2005-05-31

申请号：US09767459

申请日：2001-01-23

申请人： Masami Aizawa ,  Akihiro Ito

发明人： Masami Aizawa ,  Akihiro Ito

IPC分类号： H01F7/02 ,  H02K1/02 ,  H02K15/03 ,  H02K37/14 ,  H02K15/10 ,  H02K15/12

CPC分类号： H02K1/02

摘要： To provide a rotor magnet which is small in size and provided with high magnetic energy, a rotor magnet is formed by adding a SmFeN magnetic powder to a binder such as a polyaxnide. The SmFeN magnetic powder is provided in a size of about one-tenth that of an NdFeB magnetic powder. Therefore, the density of the magnetic powder in the magnet can be made uniform. Accordingly, there is not any dispersion of the magnetic poles when a number of poles are magnetized and the magnet can be made smaller since the maximum energy product of the magnet is higher than that of an SmCo series magnet.

摘要翻译： 为了提供尺寸小并且具有高磁能的转子磁体，通过将SmFeN磁性粉末加入到诸如多晶硅的粘合剂中来形成转子磁体。 SmFeN磁粉的尺寸约为NdFeB磁粉的十分之一。 因此，可以使磁铁中的磁粉的密度均匀。 因此，由于磁体的最大能量乘积高于SmCo系列磁体，因此磁极的磁极数量不会变多，能够使磁体变小。

公开(公告)号：US06696097B2

公开(公告)日：2004-02-24

申请号：US10153985

申请日：2002-05-23

申请人： Masami Aizawa ,  Akihiro Ito ,  Yasufumi Naoi

发明人： Masami Aizawa ,  Akihiro Ito ,  Yasufumi Naoi

IPC分类号： B05D512

CPC分类号： C22C29/16 ,  C22C38/001 ,  C22C38/005 ,  H01F1/059 ,  H01F41/026 ,  H02K1/02 ,  Y10T428/325

摘要： A shaped plastic magnet comprising a shaped body obtained by molding a mixture of an SmFeN magnetic powder with a resin binder into a desired shape, where the surface of the shaped body is subjected to a coating treatment using a phosphate. Preferably, the coating treatment is performed by using a paint containing a phosphate. The shaped plastic magnet may be used as a rotor to be incorporated in motors. The product is highly resistant against corrosion, and provides extended life to motor rotors and the like.

摘要翻译： 一种成形塑料磁体，其包括通过将SmFeN磁性粉末与树脂粘合剂的混合物成型为所需形状而获得的成形体，其中成形体的表面使用磷酸盐进行涂覆处理。 优选地，通过使用含有磷酸盐的涂料进行涂布处理。 成型的塑料磁体可以用作转子以结合在电动机中。 该产品具有高度的抗腐蚀性，并且能够延长电机转子等的使用寿命。

公开(公告)号：US6115435A

公开(公告)日：2000-09-05

申请号：US960669

申请日：1997-10-30

申请人： Keisuke Harada ,  Masami Aizawa ,  Rumi Tanabe

发明人： Keisuke Harada ,  Masami Aizawa ,  Rumi Tanabe

IPC分类号： H04L27/34 ,  H03M13/23 ,  H03M13/27 ,  H04L1/00 ,  H04L25/06 ,  H04L27/18 ,  H04L27/38 ,  H03D1/00

CPC分类号： H04L27/38 ,  H04L25/067 ,  H04L1/0054

摘要： When the received symbol is located (FIG. 4) within one of regions G, H, I, L, M, N, Q, R, and S, 2 bits are decided to be most reliable to obtain their soft decision values=0 or 7. As for the remaining 2 bits, a soft decision value=0 to 7 is decided by soft decision in the I- or Q-axis direction. When the received symbol is located within one of regions A, E, U, and Y, all the 4 bits are decided to obtain their soft decision values=0 or 7. When the received symbol is located with one of regions B, C, D, F, J, K, 0, P, T, V, W, and X, 3 bits are decided to be most reliable to obtain their soft decision values=0 or 7. As for the remaining 1 bit, a soft decision value=0 to 7 is obtained by soft decision in the I- or Q-axis direction. A soft decision method that can implement soft decision in multilevel (amplitude and/or phase) modulation and can fully exhibit the correction performance of maximum likelihood coding can be provided.

摘要翻译： 当区域G，H，I，L，M，N，Q，R和S中的一个接收到的符号位于（图4）时，确定2位最可靠以获得它们的软判决值= 0 对于剩余的2位，通过在I或Q轴方向上的软判决来决定软判定值= 0至7。 当接收到的符号位于区域A，E，U和Y中的一个区域内时，决定所有4位以获得其软判决值= 0或7.当接收到的符号位于区域B，C， D，F，J，K，0，P，T，V，W和X，3位决定为最可靠，以获得其软判决值= 0或7.对于剩余的1位， 通过在I或Q轴方向上的软判定来获得值= 0至7。 可以提供可以在多级（幅度和/或相位）调制中实现软判决并且可以充分发挥最大似然编码的校正性能的软判决方法。