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51. 发明授权

US5432820A Maximum-likelihood decoding method and device 失效
标题翻译：最大似然解码方法和装置
公开(公告)号：US5432820A
公开(公告)日：1995-07-11
申请号：US910311
申请日：1993-07-26
申请人： Takao Sugawara , Yoshifumi Mizoshita , Takashi Aikawa , Hiroshi Mutoh , Kiichirou Kasai
发明人： Takao Sugawara , Yoshifumi Mizoshita , Takashi Aikawa , Hiroshi Mutoh , Kiichirou Kasai
IPC分类号： H03M13/39 , H03D1/00 , H04L27/06
CPC分类号： H03M13/39
摘要： A maximum-likelihood decoding method for decoding an input signal subject to intersymbol interference. An assumption is made of a measure of an interference caused by a future signal that is later in a sequence than an assumed data sequence, on the basis of a predetermined bits of sample values of said input signal that are earlier in a sequence than an assumed data sequence stored in an assumed path memory (104). An assumed sample value of said input signal by referring to this measure of interference. Maximum-likelihood decoding is conducted on said input signal, on the basis of this assumed sample value and a sample value of said input signal; a plurality of survivor paths are generated and stored in a path memory (102); data for the most likely one of survivor paths is output as a decoded data sequence.
摘要翻译： PCT No.PCT / JP91 / 01579 Sec。 371日期：1993年7月26日 102（e）日期1993年7月26日PCT 1991年11月19日PCT PCT。出版物WO92 / 09144 日期：1992年5月29日。用于解码符号间干扰的输入信号的最大似然解码方法。基于序列中比预期的序列更早的所述输入信号的采样值的预定比特，假定由比未被假定的数据序列晚于序列的未来信号引起的干扰的度量存储在假定路径存储器（104）中的数据序列。通过参考这种干扰措施，假定所述输入信号的采样值。基于该假设采样值和所述输入信号的采样值对所述输入信号进行最大似然解码; 多个幸存路径被生成并存储在路径存储器（102）中; 作为解码数据序列输出最可能的幸存路径之一的数据。

52. 发明授权

US5400192A Storage device having vibratory head 失效
标题翻译：具有振动头的存储装置
公开(公告)号：US5400192A
公开(公告)日：1995-03-21
申请号：US945455
申请日：1992-09-16
申请人： Yoshifumi Mizoshita , Hiroshi Maeda , Takao Koshikawa , Takayuki Yamamoto
发明人： Yoshifumi Mizoshita , Hiroshi Maeda , Takao Koshikawa , Takayuki Yamamoto
IPC分类号： G11B5/008 , G11B5/012 , G11B5/48 , G11B5/53 , G11B5/54 , G11B5/55 , G11B25/04 , H02K7/14 , H02N1/00 , G11B21/02 , G11B5/596
CPC分类号： G11B5/5521 , G11B25/04 , G11B5/00804 , G11B5/012 , G11B5/488 , G11B5/53 , G11B5/54 , G11B5/55 , G11B5/553 , H02K7/14 , H02N1/004 , H02N1/008 , H02K99/00
摘要： A storage device includes a substrate, a magnetic storage medium provided on the substrate, information being magnetically stored in the magnetic storage medium, a head unit, and a reciprocating mechanism provided on the substrate, the reciprocating mechanism causing the head unit to reciprocate in a plane parallel to a surface of the magnetic storage medium, wherein, while the head unit is being moved by the reciprocating mechanism, information is recorded in or reproduced from the magnetic storage medium via the head unit. The reciprocating motion of the head unit is provided by piezoelectric elements on arms supporting the head, which move the head with a predetermined stroke width in simple harmonic motion.
摘要翻译：存储装置包括基板，设置在基板上的磁存储介质，磁存储在磁存储介质中的信息，磁头单元和设置在基板上的往复机构，所述往复机构使磁头单元在平行于磁存储介质的表面的平面，其中，当头单元通过往复机构移动时，信息经由头单元记录在磁存储介质中或从磁存储介质再现。头单元的往复运动由支撑头部的臂上的压电元件提供，其以简单的谐波运动以预定的行程宽度移动头部。

53. 发明授权

US5112147A Rotating support apparatus in disk storage device 失效
标题翻译：磁盘存储设备中的旋转支持设备
公开(公告)号：US5112147A
公开(公告)日：1992-05-12
申请号：US650271
申请日：1991-02-04
申请人： Takahiro Imamura , Yoshifumi Mizoshita , Keiji Aruga
发明人： Takahiro Imamura , Yoshifumi Mizoshita , Keiji Aruga
IPC分类号： G11B19/20 , G11B25/04 , G11B33/14
CPC分类号： G11B33/1433 , F16C35/077 , G11B19/2009 , G11B25/043 , F16C19/54
摘要： A rotating support apparatus in a disk storage device is provided with a stationary shaft, ball bearings rotatably fitted on the stationary shaft, a rotatable member rotatably supported by and on the ball bearings, and buffer rings superimposed between the associated ball bearings and the rotatable member to absorb a thermal deformation of the rotatable member due to a change in a temperature. The buffer rings have a same coefficient of linear expansion as that of the material of which the rotatable member is made, and each of the buffer rings is in contact, at two points of the outer inner surfaces thereof, with the rotatable member or outer races of the ball bearings, and at one point of the inner or outer surface thereof, with the associated ball bearing or the inner surface of the hub, respectively.

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