利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

63 条记录 (耗时 0.024 秒)

    Rotary head type recording/reproducing method and apparatus for recording and reproducing a digital audio signal
    41.
    发明授权
    Rotary head type recording/reproducing method and apparatus for recording and reproducing a digital audio signal 失效
    用于记录和再现数字音频信号的旋转头型记录/再现方法和装置

    公开(公告)号：US4928185A

    公开(公告)日：1990-05-22

    申请号：US149171

    申请日：1988-01-27

    申请人： Masaharu Kobayashi ,  Yukio Nishimura

    发明人： Masaharu Kobayashi ,  Yukio Nishimura

    IPC分类号： G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  H04N5/926 ,  H04N9/79 ,  H04N9/802

    CPC分类号： G11B20/1809 ,  G11B20/1208 ,  H04N5/9268 ,  H04N9/7925 ,  H04N9/802

    摘要： A rotary-head type magnetic tape recorder for recording a video signal and an audio signal on a magnetic tape by means of a rotary head controlled on the basis of the video signal. Difference is determined between a rate at which the digital audio signal is recorded on the recording medium and which is determined by the video signal and a rate of input data determined by a sampling frequency of the audio signal for a number N of samples of the digital signal to be included within one field period synchronized with the video signal. The number of samples for one field of input data is set by preparing on the basis of the result of detection of the difference in rate a first field containing a number of samples greater than the number N within and a second field containing a number of samples smaller than the number N. Blocks for recording the PCM audio signal on the recording medium are prepared by adding a first error detection/ correction code to the audio signal for every n symbols, while the symbols are imparted with amounts of delay differing from one another and subjected to diagonal incomplete interleave for thereby adding a second error detection/correction code. After addition of a block synchronizing signal, recording is performed on the tape. By adopting the variable fields, matching can be attained between the asynchronous audio and video signal fields. Reproduction capability notwithstanding of burst error is enhanced by incomplete diagonal interleave. Difference in time lag between the video signal and the audio signal involved in the reproduction thereof can be suppressed to a minimum.

    Method and apparatus for recording PCM signal
    42.
    发明授权
    Method and apparatus for recording PCM signal 失效
    用于记录PCM信号的方法和装置

    公开(公告)号：US4704640A

    公开(公告)日：1987-11-03

    申请号：US787447

    申请日：1985-10-15

    申请人： Hiroo Okamoto ,  Masaharu Kobayashi

    发明人： Hiroo Okamoto ,  Masaharu Kobayashi

    IPC分类号： G11B20/12 ,  G11B5/00 ,  G11B5/008 ,  G11B20/08 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B5/09 ,  H03M13/00

    CPC分类号： G11B5/0086 ,  G11B20/10527 ,  G11B20/1426 ,  G11B20/1809

    摘要： In PCM signal recording method and apparatus using rotary heads for converting two channels of autio PCM signals each consisting of 12-bit words to a data consisting of 8-bit words and recording the converted data, there is provided means for converting the PCM signals to two data each consisting of eight high order bits of each of two words of the PCM signals, and an 8-bit data consisting of the remaining four low order bits of the respective words. The converted PCM data are recorded on a record tape in a format such that PCM signals having i words/channel which are to be recorded on first and second tracks are divided into a first half and a second half, even data in the first half and odd data in the second half constitute the data to be recorded on the first track, and odd data in the first half and even data in the second half constitute the data to be recorded on the second track.

    摘要翻译： 在使用旋转磁头的PCM信号记录方法和装置中，用于将由12位字组成的两个通道的PCM信号转换为由8位字组成的数据并记录转换的数据，提供了将PCM信号转换为 每个由PCM信号的两个字中的每一个的8个高位构成的两个数据以及由各个字的剩余4个低位组成的8位数据。 经转换的PCM数据以记录在第一和第二磁道上的具有i个字/频道的PCM信号被划分为前半部分和第二半部分的偶数数据的格式被记录在记录磁带上，并且 第二半帧中的奇数数据构成要记录在第一磁道上的数据，上半部分的奇数数据和后半部分的偶数数据构成要记录在第二磁道上的数据。

    Multitrack PCM reproducing apparatus
    43.
    发明授权
    Multitrack PCM reproducing apparatus 失效
    多轨PCM再现装置

    公开(公告)号：US4590524A

    公开(公告)日：1986-05-20

    申请号：US553234

    申请日：1983-11-18

    申请人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Takashi Hoshino ,  Masami Nishida

    发明人： Hiroo Okamoto ,  Masaharu Kobayashi ,  Takashi Hoshino ,  Masami Nishida

    IPC分类号： G11B5/035 ,  G11B20/10 ,  G11B15/14 ,  G11B5/00

    CPC分类号： G11B20/10527 ,  G11B5/035

    摘要： A multitrack PCM reproducing apparatus for reproducing PCM signals recorded on a plurality of tracks in a distributed relation, comprises a signal selector circuit sequentially selecting the PCM signals reproduced from the individual tracks, an A/D converter converting the reproduced signals selected by the signal selector circuit into digital signals, a memory circuit storing the digital signals obtained by the A/D conversion, a single digital filter equalizing for each track the waveform of the digital signals stored in the memory circuit, and a signal processor circuit demodulating the PCM signals on the basis of the digital signals processed by the digital filter.

    摘要翻译： 一种用于再现以分布式关系记录在多个磁道上的PCM信号的多轨PCM再现装置，包括顺序地选择从各个磁道再现的PCM信号的信号选择器电路，A / D转换器转换由信号选择器选择的再现信号 电路转换为数字信号，存储电路，存储通过A / D转换获得的数字信号，对于每个轨道平均存储在存储器电路中的数字信号的波形的单个数字滤波器以及解调PCM信号的信号处理器电路 数字滤波器处理的数字信号的基础。

    Method and structure for compound semiconductor contact
    45.
    发明授权
    Method and structure for compound semiconductor contact 有权
    化合物半导体接触的方法和结构

    公开(公告)号：US08835266B2

    公开(公告)日：2014-09-16

    申请号：US13085511

    申请日：2011-04-13

    申请人： Norma E. Sosa Cortes ,  Edward W. Kiewra ,  Masaharu Kobayashi ,  Kuen-Ting Shiu

    发明人： Norma E. Sosa Cortes ,  Edward W. Kiewra ,  Masaharu Kobayashi ,  Kuen-Ting Shiu

    IPC分类号： H01L21/336 ,  H01L29/66 ,  H01L29/78 ,  H01L29/417

    CPC分类号： H01L29/66522 ,  H01L29/41783 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/7838 ,  H01L29/7848

    摘要： The present disclosure provides a buried channel semiconductor structure in which a crystallographic wet etch is used to tailor the profile of etched regions formed into a multilayered substrate which includes a compound semiconductor layer located atop a buried semiconductor channel material layer. The use of crystallographic wet etching on a compound semiconductor allows one to tailor the shape of a source recess region and a drain recess region formed into a multilayered substrate. This allows for the control of gate overlap/underlap. Also, the use of crystallographic wet etching on a compound semiconductor allows independent control of the length of an underlying buried semiconductor channel region.

    摘要翻译： 本公开提供了掩埋沟道半导体结构，其中使用结晶湿蚀刻来定制形成多层衬底的蚀刻区域的轮廓，其包括位于掩埋半导体沟道材料层顶部的化合物半导体层。 在化合物半导体上使用结晶湿式蚀刻可以使形成多层基板的源极凹部区域和漏极凹陷区域的形状成为可能。 这允许控制栅极重叠/欠压。 此外，在化合物半导体上使用晶体湿式蚀刻可以独立控制下面的掩埋半导体沟道区的长度。