公开(公告)号：US20090060403A1

公开(公告)日：2009-03-05

申请号：US12187689

申请日：2008-08-07

申请人： Tsutomu HAMADA ,  Katsuo ISHIKAWA ,  Takafumi ASADA

发明人： Tsutomu HAMADA ,  Katsuo ISHIKAWA ,  Takafumi ASADA

IPC分类号： F16C32/06

CPC分类号： F16C33/12 ,  F16C33/107 ,  F16C33/122 ,  F16C2370/12

摘要： A sleeve for a hydrodynamic bearing device, a hydrodynamic bearing device equipped with the sleeve, a spindle motor, information recording and reproducing and processing apparatus, and a method for manufacturing a sleeve for a hydrodynamic bearing device are provided that are capable of reducing costs through appropriate sealing treatment.The sleeve for a hydrodynamic bearing device has an inner layer and a surface layer. The inner layer is formed by sintering metal powder for sintering use. The surface layer is formed on a surface of the inner layer and includes diiron trioxide (Fe2O3). Sealing treatment is carried out by forming a surface layer including diiron trioxide (Fe2O3) on a surface of a sleeve for a hydrodynamic bearing device that is porous.

摘要翻译： 用于流体动力轴承装置的套筒，装备有套筒的流体动力轴承装置，主轴电动机，信息记录和再现和处理装置以及用于制造用于流体动力轴承装置的套筒的方法，其能够通过 适当的密封处理。 用于流体动力轴承装置的套筒具有内层和表面层。 内层通过烧结用于烧结的金属粉末形成。 表面层形成在内层的表面上，并且包括三氧化二铁（Fe 2 O 3）。 通过在多孔的流体动力轴承装置的套筒的表面上形成包含三氧化二铁（Fe 2 O 3）的表面层进行密封处理。

公开(公告)号：US20110044837A1

公开(公告)日：2011-02-24

申请号：US12877341

申请日：2010-09-08

申请人： Tsutomu HAMADA ,  Takafumi ASADA ,  Katsuo ISHIKAWA

发明人： Tsutomu HAMADA ,  Takafumi ASADA ,  Katsuo ISHIKAWA

IPC分类号： B22F3/26 ,  B22F3/12 ,  B22F3/24

CPC分类号： F16C33/14 ,  F16C17/107 ,  F16C2220/20 ,  F16C2220/60 ,  F16C2223/04 ,  F16C2223/08 ,  F16C2370/12

摘要： A bearing stiffness of a sintered metal sleeve is prevented from lowering. A sleeve includes an inner section formed of metal powder for sintering and a resin for impregnation, and a surface deformation section which covers a surface of the inner section and is formed by shot blast process. Since the surface deformation section is formed by the shot blast process, the number of pores formed between the metal powder for sintering near the surface can be reduced. In this way, a supporting pressure at a bearing portion can be prevented from being released out through the pores, and the bearing stiffness can be prevented from lowering.

摘要翻译： 防止烧结金属套筒的轴承刚度降低。 套筒包括由用于烧结的金属粉末形成的内部部分和用于浸渍的树脂，以及覆盖内部部分的表面并通过喷丸处理形成的表面变形部分。 由于通过喷丸法形成表面变形部，因此可以减少在表面附近烧结用金属粉末之间形成的细孔数。 以这种方式，可以防止轴承部分处的支撑压力通过孔排出，并且可以防止轴承刚度的降低。

公开(公告)号：US20120134670A1

公开(公告)日：2012-05-31

申请号：US13111277

申请日：2011-05-19

申请人： Tsutomu HAMADA

发明人： Tsutomu HAMADA

IPC分类号： H04J14/00

CPC分类号： H04J14/0279 ,  H04B10/504 ,  H04B10/5167 ,  H04B10/69

摘要： A transmitting device includes a first optical transmitting medium, a second optical transmitting medium, and an optical multiplexing portion. The first optical transmitting medium outputs a first optical signal having a predetermined signal cycle. The second optical transmitting medium outputs a second optical signal obtained by delaying the first optical signal by one cycle of the predetermined signal cycle. The optical multiplexing portion is connected to an output side of the first optical transmitting medium and the second optical transmitting medium and generates a third optical signal obtained by multiplexing the first optical signal and the second optical signal.

摘要翻译： 发送设备包括第一光传输介质，第二光传输介质和光复用部分。 第一光传输介质输出具有预定信号周期的第一光信号。 第二光传输介质输出通过将第一光信号延迟预定信号周期的一个周期而获得的第二光信号。 光复用部分连接到第一光传输介质和第二光传输介质的输出侧，并产生通过多路复用第一光信号和第二光信号而获得的第三光信号。

公开(公告)号：US20130227370A1

公开(公告)日：2013-08-29

申请号：US13603124

申请日：2012-09-04

申请人： Tsutomu HAMADA

发明人： Tsutomu HAMADA

IPC分类号： G06F11/00

CPC分类号： H04L1/0079 ,  H04L1/0061

摘要： A transmitting and receiving system includes first and second transmitting and receiving apparatuses. The first transmitting and receiving apparatus includes a generating unit and a transmitting unit. The generating unit generates a packet for transmission by attaching packet identification information to transmission data to which an error detection code is attached, and uses, as the packet identification information, a code that is capable of detecting a 1-bit error caused by transmission of the packet for transmission. The transmitting unit converts the number of bits of the packet for transmission and transmits the converted packet. The second transmitting and receiving apparatus includes a receiving unit and a correcting unit. The receiving unit subjects the transmitted packet to inverse conversion of the number of bits. The correcting unit detects a 1-bit error in the packet identification information of the inverse-converted packet, and corrects the error.

摘要翻译： 发送和接收系统包括第一和第二发送和接收装置。 第一发送和接收装置包括生成单元和发送单元。 生成单元通过将分组识别信息附加到附加有错误检测码的发送数据来生成用于发送的分组，并且使用能够检测由发送的错误检测码引起的1比特错误的代码，作为分组识别信息 用于传输的数据包。 发送单元转换用于发送的分组的比特数，并发送转换的分组。 第二发送和接收装置包括接收单元和校正单元。 接收单元使发送的分组对比特数进行逆转换。 校正单元检测逆转换分组的分组识别信息中的1比特错误，并校正错误。

公开(公告)号：US20130179746A1

公开(公告)日：2013-07-11

申请号：US13591880

申请日：2012-08-22

申请人： Tsutomu HAMADA

发明人： Tsutomu HAMADA

IPC分类号： G06F11/08

CPC分类号： H04L1/0061 ,  H04L1/1671 ,  H04L25/4908 ,  H04L45/28

摘要： A transmitting/receiving system includes a first transmitting/receiving apparatus which includes a first transmitting unit and a first receiving unit, and a second transmitting/receiving apparatus which includes a second receiving unit, a detector, a second generator, and a second transmitting unit. The first transmitting unit transmits data with an error detecting code after a bit-number conversion. The first receiving unit receives a response to the data after a bit-number inverse conversion. The second receiving unit subjects the data to a bit-number inverse conversion. The detector detects an error from the error detecting code. The second generator generates a positive or negative acknowledgement depending on the error detection and uses a code which enables distinguishing between positive and negative acknowledgements when a 1-bit error occurs during transportation. The second transmitting unit transmits the acknowledgement after a bit-number conversion to the first transmitting/receiving apparatus.

摘要翻译： 发送/接收系统包括：第一发送/接收装置，包括第一发送单元和第一接收单元;以及第二发送/接收装置，包括第二接收单元，检测器，第二发生器和第二发送单元 。 第一发送单元在比特数转换之后用错误检测码发送数据。 第一接收单元在比特数逆转换之后接收对数据的响应。 第二接收单元使数据进行位数反转换。 检测器检测错误检测码。 第二个发生器根据错误检测产生肯定或否定的确认，并使用一个代码，当运输中发生1位错误时，可以区分正和负确认。 第二发送单元在比特数转换之后将确认发送到第一发送/接收装置。

公开(公告)号：US20120140855A1

公开(公告)日：2012-06-07

申请号：US13103391

申请日：2011-05-09

申请人： Manabu AKAMATSU ,  Tsutomu HAMADA ,  Takeshi KAMIMURA

发明人： Manabu AKAMATSU ,  Tsutomu HAMADA ,  Takeshi KAMIMURA

IPC分类号： H04L27/00

CPC分类号： H04L1/0061 ,  H04L1/0047

摘要： According to an aspect of the invention, a receiving apparatus includes a receiving unit, a reverse conversion unit, and an extracting unit. The receiving unit receives conversion data which is generated, based on a predetermined first rule, by converting transmission data including a plurality of bits and data including an error detection code for detecting an error of the transmission data. The reverse conversion unit reverse-converts, based on a predetermined second rule, the conversion data received by the receiving unit and reverse data generated by reversing a part of bits of the received conversion data to generate a plurality of reverse conversion data. The extracting unit extracts, from the plurality of the reverse conversion data, the reverse conversion data for which an error is not detected in an error detection based on the error detection code.

摘要翻译： 根据本发明的一个方面，接收装置包括接收单元，反向转换单元和提取单元。 接收单元基于预定的第一规则接收通过转换包括多个位的发送数据和包括用于检测发送数据的错误的错误检测码的数据而生成的转换数据。 反向转换单元基于预定的第二规则反转转换由接收单元接收的转换数据和通过反转接收到的转换数据的一部分位而产生的反向数据，以产生多个反向转换数据。 提取单元从多个反向转换数据中提取基于错误检测码的错误检测中未检测到错误的反向转换数据。

公开(公告)号：US20120144257A1

公开(公告)日：2012-06-07

申请号：US13104447

申请日：2011-05-10

申请人： Tsutomu HAMADA ,  Manabu AKAMATSU

发明人： Tsutomu HAMADA ,  Manabu AKAMATSU

IPC分类号： H03M13/00 ,  G06F11/07

CPC分类号： G06F11/0763 ,  H03M5/145 ,  H03M13/09 ,  H03M13/21

摘要： A data receiving device includes a receiving unit, an inverse conversion unit and an error correction unit. The receiving unit receives converted data, which is obtained by converting data including transfer data of a plurality of bits, and an error detection code for error detection of the transfer data, according to a predetermined first procedure. The inverse conversion unit inversely converts the received converted data according to a predetermined second procedure. If it is impossible for the inverse conversion unit to inversely convert the converted data, if it is possible for the inverse conversion unit to inversely convert inverted data obtained by inverting a portion of the bits of the converted data, and if an error is not detected in data obtained by inversely converting the inverted data based on the error detection code, the error correction unit performs error correction by inversely converting the inverted data.

摘要翻译： 数据接收装置包括接收单元，逆变换单元和纠错单元。 接收单元根据预定的第一过程接收通过转换包括多个位的传输数据的数据和用于传送数据的错误检测的错误检测码而获得的转换数据。 逆转换单元根据预定的第二过程对所接收的转换数据进行反转换。 如果逆变换单元不可能对转换的数据进行逆转换，则如果逆变换单元可以将通过反转转换数据的位的一部分而获得的反转数据反向转换，并且如果未检测到错误 在通过基于错误检测码逆转换反转数据而获得的数据中，纠错单元通过逆转换反转数据来进行纠错。