Frequency modulation coding methods with reduced transition intervals
    61.
    再颁专利
    Frequency modulation coding methods with reduced transition intervals 失效
    频率调制编码方法具有减少的过渡间隔

    公开(公告)号:USRE33356E

    公开(公告)日:1990-09-25

    申请号:US362159

    申请日:1989-06-06

    摘要: There is provided a method of modulating a data bit series consisting of a first value (e.g. 1) and a second value (e.g., 0) whereby a transition as a state transition is caused so as to satisfy the following conditions of (a) to (d).(a) The transition at the boundary portion of the bit cell which is sandwiched by bits 0.(b) The transition at the central portion of the bit cell of bit 1.(c) Among an even number of the bits of 1 which are sandwiched by bits 0, the transition is inhibited at the central portion of each bit cell of the last two bits of 1 and the transition is caused at the boundary portion of these two bit cells of 1.(d) When at least one bit in a pattern which starts from the two bits of (01) appears at a location next to an even number of the bits of 1 subsequent to bit of 0, the transition is caused at the central portion of the bit cell of bit 0 between these two bits.

    Ionomer resin and preparation of same
    62.
    发明授权
    Ionomer resin and preparation of same 失效
    离聚物树脂及其制备方法

    公开(公告)号:US4956418A

    公开(公告)日:1990-09-11

    申请号:US178235

    申请日:1988-04-06

    摘要: An ionomer resin having a weight-average molecular weight of at least 5,000 and containing three specific repeating units as the primary components, said units being arranged randomly and linearly with the total proportion of the two units being 0.001 to 45 mol %, is obtained by copolymerizing ethylene with an unsaturated carboxylic acid in the presence of a Lewis acid, using as a catalyst a chromium compound and a compound of a metal of Groups I to V in the periodic table and permitting a compound of a metal of Group I, II, III, IVA or VIII in the periodic table to react with the resulting copolymer. When an unsaturated carboxylic ester is used, the resulting copolymer is hydrolyzed or thermally decomposed.

    Method and apparatus for surface treating of substrates
    63.
    发明授权
    Method and apparatus for surface treating of substrates 失效
    表面处理基材的方法和设备

    公开(公告)号:US4871417A

    公开(公告)日:1989-10-03

    申请号:US69541

    申请日:1987-06-30

    摘要: A method for surface treating of thin substrates such as semiconductor wafers, wherein a semiconductor wafer formed with relatively deep but transversely minute trenches on its surface is horizontally placed on a spinner in a chamber with its trenched surface directed up, ultraviolet light is then emitted onto the surface of the wafer to dissolve impurities sticking in the trenches, and thereafter etchant is spouted from a nozzle to the trenched surface of the wafer being spinned about a vertical axis at a high speed. Next, the inside of the chamber is subjected to a lower pressure than atmospheric pressure, and atmospheric pressure is restored after the lapse of a predetermined time. Thus a series of these steps of etchant supplying, pressure reducing, and pressure recovering are carried out until the complete entrance of the etchant into the interior surfaces of the trenches is effected, so as to even or smooth the interior surfaces and, finally the wafer is treated with rinsing, heating and drying steps.

    摘要翻译: 一种用于表面处理诸如半导体晶片的薄衬底的方法,其中在其表面上形成有相对较深但横向微小的沟槽的半导体晶片被水平地放置在其沟槽表面朝上的腔室中的旋转器上,然后将紫外光发射到 晶片的表面以溶解粘附在沟槽中的杂质,然后将蚀刻剂从喷嘴喷射到晶片的沟槽表面,以高速旋转垂直轴。 接下来,室的内部经受比大气压更低的压力,并且在经过预定时间之后恢复大气压力。 因此,进行一系列蚀刻剂供应,减压和压力恢复的这些步骤,直到蚀刻剂完全进入沟槽的内表面,以便均匀或平滑内表面,最后是晶片 用冲洗,加热和干燥步骤处理。

    Magnetic tape cassette
    64.
    发明授权
    Magnetic tape cassette 失效
    磁带盒

    公开(公告)号:US4858848A

    公开(公告)日:1989-08-22

    申请号:US202484

    申请日:1988-06-06

    CPC分类号: G11B23/087 G11B23/0236

    摘要: A magnetic tape cassette of very small type having a front lid pivotably secured to the cassette housing so as to open or close a front opening portion, and a guide portion arranged on the front wall of the lid at an asymmetrical position so as to extend in the longitudinal direction. Thus, when a number of tape cassettes are accommodated within a cassette magazine, the guide portions function as a guide so that all the tape cassettes with tracks A and B aligned in the same direction can be accommodated within the cassette magazine. Also, the tape cassette of the invention can be positively loaded on a recording and/or reproducing apparatus from a desired surface side. Further, since the guide portion is formed on the lid, mechanical strength of the cassette housing can be prevented from being decreased and the indication label attaching area on the top wall of the cassette housing is prevented from being restricted.

    Magnetic tape cassette
    65.
    发明授权
    Magnetic tape cassette 失效
    磁带盒

    公开(公告)号:US4769732A

    公开(公告)日:1988-09-06

    申请号:US115600

    申请日:1987-10-29

    申请人: Masato Tanaka

    发明人: Masato Tanaka

    CPC分类号: G11B23/08714

    摘要: A magnetic tape cassette has a housing with opposed surfaces and at least one passage extending through the housing and defining a cavity opening at apertures in such surfaces, and an indicating member movable within each passage and including a central positioning member in said cavity and opposed extensions directed from said positioning member into the apertures. The extensions are selectively actuable, as by a pencil point or the like, through the respective aperture for displacing the positioning member past a detent in the cavity from one to another of two externally detectable positions which correspond to respective states of the cassette.

    摘要翻译: 磁带盒具有一个具有相对表面的壳体和至少一个延伸穿过壳体的通道,并且在这些表面上的孔处限定一个空腔开口,以及指示构件,其可在每个通道内移动并且包括位于所述空腔中的中心定位构件, 从所述定位构件引导到所述孔中。 延伸部分可以通过笔尖或类似物通过相应的孔而被选择性地致动,以使定位构件经由位于空腔中的棘爪从另一个对应于盒的相应状态的两个外部可检测位置移动。

    Method for the preparation of phenyl pyruvic acid
    66.
    发明授权
    Method for the preparation of phenyl pyruvic acid 失效
    苯丙酮酸的制备方法

    公开(公告)号:US4689431A

    公开(公告)日:1987-08-25

    申请号:US831312

    申请日:1986-02-20

    IPC分类号: C07C51/10

    CPC分类号: C07C51/10 Y02P20/584

    摘要: The invention provides an improvement in the method for the preparation of phenyl pyruvic acid by the reaction of benzyl chloride and carbon monoxide in a liquid reaction medium in the presence of a cobalt carbonyl as the catalyst. In the inventive method, the reaction is performed in the presence of calcium hydroxide and the reaction medium is a binary system composed of water and an organic solvent capable of dissolving the catalyst and not freely miscible with water. The reaction can proceed even under normal pressure and the desired product can be readily recovered in the form of precipitates of the calcium salt while the catalyst dissolved in the organic phase after completion of the reaction can be recycled and re-used as such in the next run so that the costs for the catalyst regeneration in the prior art can be entirely saved.

    摘要翻译: 本发明通过苄基氯和一氧化碳在羰基钴作为催化剂的存在下在液体反应介质中的反应制备苯基丙酮酸的方法提供了改进。 在本发明的方法中,反应在氢氧化钙存在下进行,反应介质是由水和能够溶解催化剂而不与水自由混溶的有机溶剂组成的二元体系。 即使在常压下也可以进行反应,所需产物可以容易地以钙盐的沉淀物的形式回收,而在反应完成后溶解在有机相中的催化剂可以在下一个循环再利用 运行,从而可以完全节省现有技术中催化剂再生的成本。

    Frequency modulation coding methods with reduced transition intervals

    公开(公告)号:US4672363A

    公开(公告)日:1987-06-09

    申请号:US705345

    申请日:1985-02-15

    摘要: There is provided a method of modulating a data bit series consisting of a first value (e.g., 1) and a second value (e.g., 0) whereby a transition as a state transition is caused so as to satisfy the following conditions of (a) to (d).(a) The transition at the boundary portion of the bit cell which is sandwiched by bits 0.(b) The transition at the central portion of the bit cell of bit 1.(c) Among an even number of the bits of 1 which are sandwiched by bits 0, the transition is inhibited at the central portion of each bit cell of the last two bits of 1 and the transition is caused at the boundary portion of these two bit cells of 1.(d) When at least one bit in a pattern which starts from the two bits of (01) appears at a location next to an even number of the bits of 1 subsequent to bit of 0, the transition is caused at the central portion of the bit cell of bit 0 between these two bits.

    Signal recording and reproducing apparatus
    68.
    发明授权
    Signal recording and reproducing apparatus 失效
    信号记录和再现装置

    公开(公告)号:US4665443A

    公开(公告)日:1987-05-12

    申请号:US891412

    申请日:1986-07-31

    申请人: Masato Tanaka

    发明人: Masato Tanaka

    摘要: A signal recording and reproducing apparatus where the signal is recorded in a forward and reverse direction on a magnetic medium such as tape and where the signal to be recorded is supplied to the recording head through a delay circuit with a delay between the recording head and the magnetic tape in the second direction being larger than the signal delay between the head and the tape in the first direction and wherein the difference between these two delays is longer than the time required for tape reversal.

    摘要翻译: PCT No.PCT / JP84 / 00317 Sec。 371日期1985年2月12日 102(e)1985年2月12日PCT PCT。1984年6月18日PCT公布。 出版物WO85 / 日期1985年1月3日。一种信号记录和再现装置,其中信号在诸如磁带的磁性介质上沿正向和反向记录,并且其中要记录的信号通过延迟电路被提供给记录头 在第二方向上记录头和磁带之间的延迟大于在第一方向上的磁头和磁带之间的信号延迟,并且这两个延迟之间的差比磁带反转所需的时间长。

    Recording and/or reproducing apparatus for a multi-channel digital signal
    69.
    发明授权
    Recording and/or reproducing apparatus for a multi-channel digital signal 失效
    用于多声道数字信号的记录和/或再现装置

    公开(公告)号:US4520407A

    公开(公告)日:1985-05-28

    申请号:US465464

    申请日:1983-02-10

    摘要: An apparatus for recording and/or reproducing a digital signal made up of a plurality of channel signals digitally recorded in respective tracks on a magnetic record medium comprises a reproducing circuit which reproduces the channel signals recorded in the respective tracks, a recording circuit associated with the tracks which records digital signals in the tracks, and a selector circuit which selectively supplies the reproduced channel signals to the recording circuit for digital recording by the latter in at least a selected one of the tracks on the magnetic record medium.

    摘要翻译: 一种用于记录和/或再现由数字记录在磁记录介质上的相应磁道中的多个通道信号组成的数字信号的装置包括再现记录在各个磁道中的通道信号的再现电路,与该磁记录介质相关联的记录电路 在轨道中记录数字信号的轨道,以及选择器电路,其选择性地将再现的频道信号提供给记录电路,用于通过磁记录介质中的至少一个轨道中的至少一个磁道进行数字记录。

    Data extracting circuit
    70.
    发明授权
    Data extracting circuit 失效
    数据提取电路

    公开(公告)号:US4385328A

    公开(公告)日:1983-05-24

    申请号:US197606

    申请日:1980-10-16

    申请人: Masato Tanaka

    发明人: Masato Tanaka

    CPC分类号: H04L25/062 G11B20/10009

    摘要: A data extracting circuit including an input terminal supplied with an input signal which is reproduced from a magnetic tape, positive and negative peak hold circuits connected to the input terminal, respectively, an adding circuit for adding the positive and negative peak voltages from the peak hold circuits at a predetermined rate and for producing a threshold voltage, and a level comparator having a first input terminal supplied with the delayed input signal and a second input terminal supplied with the threshold voltage and for deriving a digital binary data signal, the positive and negative peak hold circuits including a higher level priority circuit and a lower level priority circuit, respectively, and supplied with the input signal and a delayed signal which is further delayed by a second delay circuit following the delay circuit.

    摘要翻译: 一种数据提取电路,包括:输入端子,其被提供有从磁带再现的输入信号;正和负峰值保持电路,分别与输入端连接;加法电路,用于将来自峰值保持的正和负峰值电压相加; 以及用于产生阈值电压的电路;以及电平比较器,其具有被提供有延迟的输入信号的第一输入端和提供有阈值电压的第二输入端,并且用于导出数字二进制数据信号,所述正和负 峰值保持电路分别包括较高电平优先级电路和较低电平优先级电路,并提供有输入信号和延迟信号,该延迟信号由延迟电路之后的第二延迟电路进一步延迟。