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71. 发明授权

US5602816A Recording and reproducing system and equalizing method for use in it 失效
标题翻译：录音和再现系统及其均衡方法
公开(公告)号：US5602816A
公开(公告)日：1997-02-11
申请号：US517584
申请日：1995-08-22
申请人： Nobutaka Amada , Toshifumi Takeuchi , Takao Arai
发明人： Nobutaka Amada , Toshifumi Takeuchi , Takao Arai
IPC分类号： G11B7/00 , G11B7/004 , G11B7/005 , G11B20/10 , G11B20/14 , G11B27/36
CPC分类号： G11B20/10046 , G11B20/10009 , G11B20/10527 , G11B20/1426 , G11B7/005
摘要： An object of the present invention is to increase the recording density of digital information signal in a recording medium without changing parameters of the recording medium and a RLL code. To accomplish the object, the present invention has a frequency response of the equalizer set so that an overall transmission frequency characteristic H(f) of the RLL coder, the recording medium, and the equalizer to an impulse becomes the one given by an equation below ##EQU1## where Fm denotes a cut-off frequency of the recording medium.
摘要翻译：本发明的目的是提高记录介质中的数字信息信号的记录密度，而不改变记录介质的参数和RLL代码。为了实现该目的，本发明具有均衡器组的频率响应，使得RLL编码器，记录介质和与脉冲的均衡器的总体传输频率特性H（f）成为由下面的等式给出的其中Fm表示记录介质的截止频率。

72. 发明授权

US5343455A Digital signal overlapped or joined recording method and apparatus 失效
标题翻译：数字信号叠加或连接的记录方法和装置
公开(公告)号：US5343455A
公开(公告)日：1994-08-30
申请号：US677767
申请日：1991-03-29
申请人： Toshifumi Takeuchi , Takao Arai , Yutaka Nagai , Izumi Kimura
发明人： Toshifumi Takeuchi , Takao Arai , Yutaka Nagai , Izumi Kimura
IPC分类号： G11B7/0045 , G11B20/10 , G11B20/18 , G11B27/034 , G11B27/30 , G11B7/00
CPC分类号： G11B7/0045 , G11B20/10527 , G11B20/1809 , G11B27/034 , G11B27/3063 , G11B2020/10592 , G11B2220/218 , G11B2220/2545
摘要： A digital signal recording method and apparatus for recording first digital data and second digital data on a writable disc without an interleave discrepancy therebetween. The first digital data is previously recorded and the second digital data is at least one of overlapped and joined with the first digital data on a writable disc so that no interleave discrepancy occurs.
摘要翻译：一种数字信号记录方法和装置，用于在可写盘上记录第一数字数据和第二数字数据，而不会在其间存在交错差异。先前记录第一数字数据，并且第二数字数据与可写盘上的第一数字数据重叠和连接中的至少一个，使得不发生交错差异。

73. 发明授权

US4961204A PCM signal generating/reproducing apparatus 失效
标题翻译： PCM信号生成/再现装置
公开(公告)号：US4961204A
公开(公告)日：1990-10-02
申请号：US353709
申请日：1989-05-18
申请人： Hiromichi Tanaka , Takao Arai , Toshifumi Takeuchi , Seiichi Saito
发明人： Hiromichi Tanaka , Takao Arai , Toshifumi Takeuchi , Seiichi Saito
IPC分类号： G11B20/10 , G11B20/18 , H03M13/27 , H04N5/928
CPC分类号： H04N5/928 , G11B20/1809
摘要： A PCM signal processing apparatus for recording or reproducing a PCM signal. The PCM signal reproducing apparatus of the invention is constituted by: a data addition circuit for receiving a first signal composed of n bits per word (n being an integer) and a second signal composed of n' bits per word (n' being an integer) as mode inputs different from each other, and for adding fixed data of (n-n') bits to every word of the second signal to thereby generate a third signal; a first switch device for receiving the first and third signals and for selectively outputting one of the first and third signals; a symbol generation circuit for converting every word of the output of the first switch device into symbol data of m.times.l bits (n>l); a signal processing circuit for performing at least interleave processing, error correction code generating processing, and addition of a synchronizing signal, on the output of the symbol generation circuit, to thereby generate a first data frame; a data deletion circuit for deleting the fixed data from the first data frame of the signal processing circuit to thereby generate a second data frame; and a second switch devices for receiving the first data frame from the signal processing circuit and the second data frame from the data deletion circuit.
摘要翻译：一种用于记录或再现PCM信号的PCM信号处理装置。本发明的PCM信号再现装置由以下部分构成：数据加法电路，用于接收由每个字n位（n为整数）组成的第一信号和由每个字n位（n'为整数）组成的第二信号）作为彼此不同的模式输入，并且用于将（n-n'）位的固定数据添加到第二信号的每个字，从而生成第三信号; 第一开关装置，用于接收第一和第三信号并选择性地输出第一和第三信号之一; 符号产生电路，用于将第一开关装置的输出的每个字转换成m×1位（n> 1）的符号数据; 信号处理电路，用于在符号生成电路的输出上执行至少交织处理，纠错码生成处理以及同步信号的相加，从而生成第一数据帧; 数据删除电路，用于从信号处理电路的第一数据帧中删除固定数据，从而生成第二数据帧; 以及用于从信号处理电路接收第一数据帧的第二开关装置和来自数据删除电路的第二数据帧。

74. 发明授权

US4934003A Device for transferring the disabled 失效
标题翻译：用于传送残疾人的设备
公开(公告)号：US4934003A
公开(公告)日：1990-06-19
申请号：US304776
申请日：1989-01-31
申请人： Kiyoshi Hayakawa , Takao Arai , Osamu Tanaka , Hiroshi Iijima , Hiroki Suzuki , Fumiyuki Matsuno , Kenji Misugi
发明人： Kiyoshi Hayakawa , Takao Arai , Osamu Tanaka , Hiroshi Iijima , Hiroki Suzuki , Fumiyuki Matsuno , Kenji Misugi
IPC分类号： A61G7/10
CPC分类号： A61G7/1017 , A61G7/1038 , A61G7/1046 , A61G7/1059 , A61G7/1086 , A61G7/1096 , A61G7/1076 , Y10S297/10 , Y10S414/134
摘要： A disabled transferring device comprises a stationary base and a rotary base coupled with the stationary base for forming a base assembly. An actuation lever assembly which has an actuation lever having a pivot point in the vicinity of one end and an actuation point at the other end, is pivotally supported on the rotary base of the base assembly. A pivotal support shaft is secured onto the level in the vicinity of the pivot point in such an arrangement that the securing point of the pivotal support shaft is oriented at the pivot point or between the one end and the pivot point with a first distance to the pivot point of the lever. The first distance is much shorted than a second distance between the pivot point and the actuation point. A saddle to mount thereon the disabled is mounted on the top end of the support shaft. The support shaft is pivotable between a tilted position with the saddle for placing the saddle on the chest or brest of the disabled and the vertical position at which the angular displacement of the shaft and saddle is caused to the angular position where the chair, bed, vehicular seat or so forth to transfer the disabled is oriented.

75. 发明授权

US4843493A Rotary head type magnetic recording and reproducing apparatus and method of producing tracking control signals therefor 失效
标题翻译：旋转磁头型磁记录和再现装置及其跟踪控制信号的产生方法
公开(公告)号：US4843493A
公开(公告)日：1989-06-27
申请号：US838958
申请日：1986-03-12
申请人： Takashi Furuhata , Yasufumi Yumde , Fujio Okamura , Takaharu Noguchi , Toshifumi Shibuya , Katsuo Mohri , Takao Arai , Toshimichi Terada
发明人： Takashi Furuhata , Yasufumi Yumde , Fujio Okamura , Takaharu Noguchi , Toshifumi Shibuya , Katsuo Mohri , Takao Arai , Toshimichi Terada
IPC分类号： G11B15/467 , G11B15/473
CPC分类号： G11B15/4672 , G11B15/4678 , G11B15/4738
摘要： A method of producing a tracking control signal in a rotary head type magnetic recording and reproducing apparatus and a rotary head type magnetic recording and reproducing apparatus capable of a proper tracking by the use of the tracking control signal. First and second tracking signals are recorded on local portions of each odd-numbered track and the first tracking signal and a third tracking signal are recorded on local portions of each even-numbered track in such a manner that the second tracking signals on two odd-numbered track adjacent to any one even-numbered track are not overlapped with each other and the third tracking signals on two even-numbered tracks adjacent to any one odd-numbered track are not overlapped with each other when viewed in a direction perpendicular to the longitudinal direction of the tracks; upon scanning of a track crosstalk signals are detected from two adjacent track simultaneously with reproduction of the first and second or third tracking signals; and the detected crosstalk signals are compared by the use of timing of the reproduction of the first tracking signal for each track thereby producing a tracking control signal. The second tracking signal may have a frequency equal to that of the third tracking frequency.
摘要翻译：一种在旋转磁头式磁记录和再现装置中产生跟踪控制信号的方法以及能够通过使用跟踪控制信号进行适当跟踪的旋转磁头型磁记录和再现装置。第一跟踪信号和第二跟踪信号被记录在每个奇数号的轨道的本地部分上，并且第一跟踪信号和第三跟踪信号被记录在每个偶数轨迹的本地部分上，与任何一个偶数编号的轨道相邻的编号轨道彼此不重叠，并且在与任何一个奇数编号的轨道相邻的两个偶数轨道上的第三跟踪信号在垂直于纵向的方向上观察时不彼此重叠轨道方向; 在轨道的扫描时，与第一和第二或第三跟踪信号的再现同时从两个相邻轨道检测串扰信号; 并且通过使用每个轨道的第一跟踪信号的再现的定时来比较检测到的串扰信号，从而产生跟踪控制信号。第二跟踪信号可以具有等于第三跟踪频率的频率。

76. 发明授权

US4649542A Digital signal transmission method providing high error correction capability 失效
标题翻译：数字信号传输方式提供高纠错能力
公开(公告)号：US4649542A
公开(公告)日：1987-03-10
申请号：US621743
申请日：1984-06-18
申请人： Keizo Nishimura , Masaharu Kobayashi , Hiroo Okamoto , Takaharu Noguchi , Takao Arai , Toshifumi Shibuya
发明人： Keizo Nishimura , Masaharu Kobayashi , Hiroo Okamoto , Takaharu Noguchi , Takao Arai , Toshifumi Shibuya
IPC分类号： G11B20/18 , H03M13/00 , H03M13/27 , G06F11/10
CPC分类号： G11B20/1809
摘要： A method of transmitting a digital signal in the form of successive signal frames containing codes for detecting and correcting errors of the digital signal for reducing degradation in the quality of the reproduced sound due to generation of the code errors in a digitized audio signal transmission system. An analog signal such as an audio signal is sampled and subjected to A/D conversion. The sample word thus obtained is divided into a plurality of symbol elements. Parity words for detecting and correcting code errors are added to every group of a predetermined number of the information symbols through an interleave procedure before being transmitted. The method includes the steps of applying a first frame of symbols, taken one from each input channel, and having a first arrangement state, to a first error-correcting code encoder to generate a series of first parity words; delaying each of the symbols in the first frame and each of the first parity words by a respective different delay time in a unit of the sample word at a delay line to provide a resulting second frame of symbols in a second arrangement state; applying the second frame of symbols to a second error-correcting code encoder to generate a series of second parity words; and transmitting said second frame of symbols together with said second parity words.
摘要翻译：以包含用于检测和校正数字信号的错误的代码的连续信号帧的形式发送数字信号的方法，用于减少由于数字化音频信号传输系统中的代码错误的产生而导致的再现声音质量的劣化。诸如音频信号的模拟信号被采样并进行A / D转换。由此获得的采样字被分成多个符号元素。用于检测和校正码错误的奇偶校验字在发送之前通过交织过程被添加到预定数量的信息符号的每个组中。该方法包括以下步骤：将第一帧符号从每个输入通道中取出并具有第一布置状态到第一纠错码编码器以产生一系列第一奇偶校验字; 延迟第一帧和第一奇偶校验字中的每个符号以延迟线为单位的采样字的相应的不同延迟时间，以在第二布置状态下提供所得到的第二符号帧; 将第二符号帧应用于第二纠错码编码器以产生一系列第二奇偶校验字; 以及与所述第二奇偶校验字一起发送所述第二符号帧。

77. 发明授权

US4583074A Expansion circuit for digital signals 失效
标题翻译：数字信号扩展电路
公开(公告)号：US4583074A
公开(公告)日：1986-04-15
申请号：US527358
申请日：1983-08-29
申请人： Hiroo Okamoto , Tsutomu Noda , Takao Arai
发明人： Hiroo Okamoto , Tsutomu Noda , Takao Arai
IPC分类号： H04B1/64 , G11B3/00 , G11B7/00 , G11B20/10 , H03G7/00 , H03M7/50 , H04B14/04
CPC分类号： H03M7/50 , H03G7/007 , H04B14/048
摘要： A PCM signal processor which converts an analog signal into a digital signal to transmit or record the digital signal. When the PCM signal processor receives a PCM signal whose data has been compressed in such a manner that one or more lower bits are cut off from a plurality of bits for forming the PCM signal and indicating the signal level of the analog signal, in accordance with the signal level of the analog signal, one or more bits corresponding to the number of bits having been cut off are added in the processor to the compressed PCM signal at the position following the least significant bit of the compressed PCM signal. Correction data indicating about one half the largest one of numerical values that can be expressed by the added bit or bits, is given to the added bit or bits.
摘要翻译： PCM信号处理器，其将模拟信号转换为数字信号以传送或记录数字信号。当PCM信号处理器接收到其数据已经被压缩的PCM信号，使得从用于形成PCM信号的多个比特中切出一个或多个低位并指示模拟信号的信号电平时，根据模拟信号的信号电平，对应于被切断的位数的一个或多个比特在处理器中被加到在压缩PCM信号的最低有效位之后的位置处的压缩PCM信号。指示相加位或数位可表示的数值中最大值数字的大约一半的校正数据。

78. 发明授权

US4491880A Magnetic recording and/or reproducing apparatus 失效
标题翻译：磁记录和/或再现装置
公开(公告)号：US4491880A
公开(公告)日：1985-01-01
申请号：US421401
申请日：1982-09-22
申请人： Noboru Kojima , Yoshizumi Watatani , Takao Arai , Takashi Hoshino , Toshifumi Shibuya
发明人： Noboru Kojima , Yoshizumi Watatani , Takao Arai , Takashi Hoshino , Toshifumi Shibuya
IPC分类号： H04N5/91 , G11B5/02 , G11B5/035 , G11B20/12 , H04N5/928 , H04N5/782
CPC分类号： G11B5/035 , H04N5/928
摘要： In a magnetic recording and reproducing apparatus of 2-head helical scan type, an overlapping portion is formed at one end of each video track on a magnetic tape, and a PCM audio signal is recorded on this overlapping portion. Video/audio selective switching circuits are disposed on the input or output side of video and audio recording amplifiers, and video/audio selective switching circuits and video/audio playback equalizer circuits are disposed on the output side of video and audio playback amplifiers. Each of the heads acts as both of a video head and an audio head.
摘要翻译：在2磁头螺旋扫描型的磁记录和再现装置中，在磁带上的每个视频磁道的一端形成重叠部分，并且PCM音频信号被记录在该重叠部分上。视频/音频选择开关电路设置在视频和音频记录放大器的输入或输出侧，并且视频/音频选择开关电路和视频/音频重放均衡器电路设置在视频和音频播放放大器的输出侧。每个头都用作视频头和音频头。

79. 发明授权

US4367499A Tape searching device in PCM recording and reproducing apparatus 失效
标题翻译： PCM记录和再现装置中的磁带搜索装置
公开(公告)号：US4367499A
公开(公告)日：1983-01-04
申请号：US301133
申请日：1981-09-11
申请人： Takashi Hoshino , Takao Arai
发明人： Takashi Hoshino , Takao Arai
IPC分类号： G11B15/00 , G11B15/02 , G11B27/28 , G11B27/30 , G11B15/18 , G11B5/06 , G11B19/02
CPC分类号： G11B27/3018 , G11B15/005 , G11B15/026
摘要： An address on a magnetic tape to be searched and a current address of the magnetic tape which is read by playing back the tape are supplied to first arithmetic operation means to produce a signal indicative of the tape length to be fast moved and a signal indicative of the direction of the fast tape movement so that the tape is fast moved in the selected direction in response to the derived direction signal. Second arithmetic operation means watches address pitch signals produced during the fast tape movement and the tape length to be fast moved derived from the first arithmetic operation means, to release the fast tape movement when the predetermined length of tape has been fast moved.
摘要翻译：要搜索的磁带上的地址和通过重放磁带读取的磁带的当前地址被提供给第一算术运算装置，以产生指示要快速移动的磁带长度的信号和指示快速磁带移动的方向，使得磁带响应于导出的方向信号而沿所选择的方向快速移动。第二算术运算装置是指在快速磁带移动期间产生的地址音调信号和从第一算术运算装置得到的要快速移动的磁带长度，以便在预定长度的磁带已快速移动时释放快速磁带移动。

80. 发明授权

US4134078A Gain control circuit 失效
标题翻译：增益控制电路
公开(公告)号：US4134078A
公开(公告)日：1979-01-09
申请号：US823198
申请日：1977-08-09
申请人： Takao Arai , Shigeru Okada , Kouichi Tomatsuri , Hiroshi Toeda
发明人： Takao Arai , Shigeru Okada , Kouichi Tomatsuri , Hiroshi Toeda
IPC分类号： H03G3/10 , H03G1/00 , H03G3/30
CPC分类号： H03G1/0052
摘要： A gain control circuit comprising a pair of transistors constituting a differential amplifier, and a pair of resistors each connected to the emitter of one of the transistors and having a sufficiently great resistance value compared with 1/gm of the transistor in the transistor operating range, the resistors being connected to a common regulated current supply to supply the halves of control current from the regulated current supply to the respective transistors, a pair of diodes are connected to the collectors of the respective transistors as a load, and a first variable resistor means is disposed in the current path traced from the diodes to the regulated current supply via the transistors and resistors for compensating fluctuation of the diffused resistance of the diodes. Further, a second variable resistor means is disposed in the base bias circuit for the transistors for compensating fluctuation of the base-emitter voltage of the transistors.
摘要翻译：一种增益控制电路，包括构成差分放大器的一对晶体管和一对电阻器，每个电阻器连接到晶体管之一的发射极，并且与晶体管工作范围内的晶体管的1 / gm相比具有足够大的电阻值，电阻器连接到公共调节电流源，以将控制电流的一半从调节电流源提供给相应的晶体管，一对二极管作为负载连接到相应晶体管的集电极，第一可变电阻器装置被布置在从二极管经由晶体管和电阻器调节的电流源的电流路径中，以补偿二极管扩散电阻的波动。此外，第二可变电阻器装置设置在用于晶体管的基极偏置电路中，用于补偿晶体管的基极 - 发射极电压的波动。

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