Digital error detection using bracketing
    1.
    发明授权
    Digital error detection using bracketing 失效
    使用包围数字错误检测

    公开(公告)号:US4380069A

    公开(公告)日:1983-04-12

    申请号:US217796

    申请日:1980-12-18

    CPC分类号: G11B20/1426 G11B20/1876

    摘要: In a transmission channel, such as a tape recorder, errors in code words usually occur in bursts. Further, it is usually possible to detect only some of the erroneous code words. To conceal undetected erroneous code words, concealment starts before, and continues after, a detected erroneous code word. Thus the undetected erroneous code words in an error burst have a high probability of being concealed.

    摘要翻译: 在诸如磁带录音机的传输通道中,代码字中的错误通常在突发中出现。 此外,通常可以仅检测一些错误代码字。 为了隐藏未检测到的错误代码字,在检测到的错误代码字之前和之后开始隐藏。 因此,错误突发中未检测到的错误代码字具有被隐藏的高概率。

    Switched capacitor filter for use with a digital-to-analog (D/A)
converter
    2.
    发明授权
    Switched capacitor filter for use with a digital-to-analog (D/A) converter 失效
    用于数/模(D / A)转换器的开关电容滤波器

    公开(公告)号:US4968989A

    公开(公告)日:1990-11-06

    申请号:US40168

    申请日:1987-04-20

    IPC分类号: H03M1/00

    CPC分类号: H03M1/0626 H03M1/66

    摘要: The output of a digital-to-analog (D/A) converter is coupled to the input of a filter. The D/A converter is initialized each time a new digital word is applied to the D/A converter for conversion, whereby each data conversion cycle (T.sub.D) includes an initialization interval (T.sub.I) followed by a conversion interval (T.sub.C). During T.sub.I the output of the D/A converter is driven to a reference level and during T.sub.C to the output of the D/A converter corresponds to the value of the input signal. The input section of the filter stores the D/A output just prior to initialization and, for during T.sub.I, coupling the stored value within the filter for processing while inhibiting the coupling to the filter of the reference level present at the D/A output.

    摘要翻译: 数模(D / A)转换器的输出耦合到滤波器的输入端。 每当将新的数字字施加到D / A转换器进行转换时,D / A转换器被初始化,由此每个数据转换周期(TD)包括初始化间隔(TI),随后是转换间隔(TC)。 在TI期间,D / A转换器的输出被驱动到参考电平,并且在TC期间,D / A转换器的输出对应于输入信号的值。 滤波器的输入部分在初始化之前存储D / A输出,并且在TI期间将存储的值耦合到滤波器内进行处理,同时禁止与D / A输出端存在的参考电平的滤波器的耦合。

    Method of sealing a mount in a cathode-ray tube
    3.
    发明授权
    Method of sealing a mount in a cathode-ray tube 失效
    密封阴极射线管中的安装座的方法

    公开(公告)号:US4622084A

    公开(公告)日:1986-11-11

    申请号:US696158

    申请日:1985-01-29

    IPC分类号: C03C27/10 H01J9/26

    CPC分类号: C03C27/10 H01J9/263

    摘要: A method of sealing an electron gun mount of a cathode-ray tube to a back section thereof comprises the steps of applying a glass frit between an edge of the back section and the mount where the sealing is to be effected, heating the glass frit to a temperature sufficient to cause the frit to become vitreous, thereby sealing the mount to the back section, and flowing a gas containing a reducing agent past the electron gun during the heating step.

    摘要翻译: 将阴极射线管的电子枪支架密封到其背部的方法包括以下步骤:在背部的边缘和要进行密封的安装件之间施加玻璃料,将玻璃料加热至 足以使玻璃料变成玻璃体的温度,从而将安装件密封到后部部分,并且在加热步骤期间使含有还原剂的气体流过电子枪。

    PCM Detector
    4.
    发明授权
    PCM Detector 失效
    PCM检测器

    公开(公告)号:US4275416A

    公开(公告)日:1981-06-23

    申请号:US125641

    申请日:1980-02-28

    CPC分类号: H04N9/85 H04L25/06 H04N7/088

    摘要: A current source supplies current to an integrator representative of a difference between the instantaneous and average values of a video signal having a PCM data component time division multiplexed with an analog luminance component. The integrator is enabled during the central portion of each PCM signaling interval and reset to a reference level during initial and terminal portions of the intervals. Asymmetry of the peak-to-peak PCM signal levels with respect to the average signal level tends to result in asymmetrical excursions of the integrator output voltage relative to the reference level. This asymmetry is corrected by means of a charge source that supplied a predetermined quantity of charge continuously or in discrete packets to the integrator during the central portion of each PCM signaling interval. The integrator voltage excursions are thereby equalized and a substantially uniform probability of detection of the PCM data levels may be realized by means of a threshold device having a threshold level substantially equal to the reference level.

    摘要翻译: 电流源向积分器提供电流,代表具有与模拟亮度分量多路复用的PCM数据分量的视频信号的瞬时和平均值之间的差异。 在每个PCM信令间隔的中心部分期间,积分器被使能,并且在间隔的初始和终端部分期间复位到参考电平。 相对于平均信号电平的峰峰值PCM信号电平的不对称倾向于导致积分器输出电压相对于参考电平的非对称偏移。 通过在每个PCM信号间隔的中央部分期间向积分器连续地或以分立的分组提供预定量的电荷的电荷源校正该不对称性。 因此,积分器电压偏移被均衡,并且可以通过具有基本上等于参考电平的阈值电平的阈值装置来实现PCM数据电平的基本均匀的检测概率。

    Planar semiconductor devices and method of making the same
    6.
    发明授权
    Planar semiconductor devices and method of making the same 失效
    平面半导体器件及其制造方法

    公开(公告)号:US4160260A

    公开(公告)日:1979-07-03

    申请号:US852565

    申请日:1977-11-17

    摘要: A semiconductor device includes a region of polycrystalline silicon on a portion of the surface of a body of semiconductor material. A layer of oxidized polycrystalline silicon is also on the semiconductor material body and extends to the polycrystalline silicon region. The surface of the silicon oxide layer is substantially coplanar with the surface of the polycrystalline silicon region so that a metal film conductor can be easily provided over the semiconductor device. The polycrystalline silicon region may be the gate of an MOS transistor or a conductive region of any type of semiconductor device. The semiconductor device is made by forming a polycrystalline silicon layer over the semiconductor material body, forming a mask on a portion of the polycrystalline silicon layer, reducing the thickness of the unmasked portion of the polycrystalline silicon layer and then oxidizing the unmasked portion of the polycrystalline silicon layer to form the oxide layer.

    Method for determining whether holes in dielectric layers are opened
    8.
    发明授权
    Method for determining whether holes in dielectric layers are opened 失效
    用于确定电介质层中的孔的方法是开放的

    公开(公告)号:US4103228A

    公开(公告)日:1978-07-25

    申请号:US797401

    申请日:1977-05-16

    摘要: The method is used to determine whether holes etched into a dielectric layer which has been formed on a surface of a semiconductor wafer are open. A plurality of specimen holes are formed in a selected portion of the wafer simultaneously with the formation of the holes to be tested. The specimen holes are then contacted with an electrolytic probe, and the wafer is contacted with an output probe. The resistance, through the wafer, between the electrolytic probe and the output probe is determined. Since the resistance is related to the amount of dielectric material remaining in the hole, a non-destructive determination may be made as to whether the device should be subjected to additional etching.

    Monolithic light detector
    9.
    发明授权
    Monolithic light detector 失效
    单片光检测器

    公开(公告)号:US4096512A

    公开(公告)日:1978-06-20

    申请号:US775896

    申请日:1977-03-09

    摘要: A highly sensitive light detector is described which employs two interdigitated PN junction light detectors, one of which is covered by an opaque material. The one covered by opaque material is used as a standard for eliminating dark current efffects.

    摘要翻译: 描述了一种高灵敏度的光检测器,其采用两个叉指式PN结光检测器,其中一个被不透明材料覆盖。 被不透明材料覆盖的材料用作消除暗电流效应的标准。

    Cathode ray tube gun having nested electrode assembly
    10.
    发明授权
    Cathode ray tube gun having nested electrode assembly 失效
    具有嵌套电极组件的阴极射线管枪

    公开(公告)号:US3927341A

    公开(公告)日:1975-12-16

    申请号:US17915471

    申请日:1971-09-09

    申请人: RCA CORP

    IPC分类号: H01J29/50 H01J29/51 H01J31/20

    CPC分类号: H01J29/506

    摘要: A conventional three-gun assembly for a color cathode ray tube is modified by eliminating the usual radial convergence cup, mounting the radial convergence pole pieces on the forward ends of the last focus electrodes, and providing each gun with a combination magnetic shield and electrode support member in the form of an open frame of magnetic metal mounted on the insulator support rods and having one side attached to the last focus electrode, an opposite side shielding the associated pole pieces from the other pole pieces, and two other connecting sides. The last focus electrode may be one of two tubular electrodes of small diameter having outwardly-flared ends adjacent to each other.

    摘要翻译: 用于彩色阴极射线管的常规三枪组件通过消除通常的径向会聚杯而改变,将径向会聚极片安装在最后聚焦电极的前端上,并为每个枪提供组合磁屏蔽和电极支撑 安装在绝缘体支撑杆上的开放的磁性金属框架形式的构件,并且具有连接到最后一个聚焦电极的一侧,相对的侧面将相关联的极片与另一个极片以及另外两个连接侧相屏蔽。 最后的聚焦电极可以是两个小直径的管状电极之一,其具有彼此相邻的向外扩展的端部。