Descrambling device in CATV system
    21.
    发明授权
    Descrambling device in CATV system 失效
    CATV系统中的解扰器

    公开(公告)号:US4145716A

    公开(公告)日:1979-03-20

    申请号:US790146

    申请日:1977-04-22

    CPC分类号: H04N7/1713

    摘要: A descrambler system for a CATV television signal having IF audio, video and synchronizing components that is scrambled by a first amplitude modulation of the IF audio component and a second amplitude modulation of the combined audio, visual and synchronizing components by a key signal having a frequency that is an integral multiple of a 15.75 KHz horizontal synchronizing frequency includes a demodulator responsive to the scrambled signal, a key signal detecting circuit coupled to derive the key signal from the audio portion of the demodulator output and a dynamic limiter circuit coupled to remove noise from the key signal and provide a noise free sine wave key signal to the demodulator. The dynamic limiter circuit is an inexpensive circuit providing the signal processing characteristics of a much more expensive narrow band filter. It includes a current limiter circuit driven by a current source in proportion to the magnitude of the scrambled signal to provide a square wave signal at the key signal frequency that is proportional in magnitude to the scrambled signal and a simple filter that converts the square wave signal to a sine wave key signal that is used by the demodulator circuit with the exact shape, frequency and amplitude characteristics for noise free unscrambling of the scrambled CATV signal.

    摘要翻译: 一种用于CATV电视信号的解扰器系统,其具有由IF音频分量的第一幅度调制加扰的IF音频,视频和同步分量,以及具有频率的键信号的组合的音频,视觉和同步分量的第二幅度调制 其是15.75KHz水平同步频率的整数倍,包括响应于加扰信号的解调器,耦合到从解调器输出的音频部分导出密钥信号的键信号检测电路和耦合以去除噪声的动态限幅器电路 关键信号,并向解调器提供无噪声的正弦波键信号。 动态限幅器电路是廉价的电路,其提供了更昂贵的窄带滤波器的信号处理特性。 它包括由电流源驱动的电流限制器电路,与加扰信号的幅度成比例,以提供与加扰信号大小成比例的键信号频率的方波信号,以及将矩形波信号 与解调器电路使用的具有准确形状,频率和幅度特性的正弦波键信号,用于无噪声解扰加扰的CATV信号。

    Semiconductor laser device and optical pickup apparatus
    22.
    发明授权
    Semiconductor laser device and optical pickup apparatus 失效
    半导体激光装置和光学拾取装置

    公开(公告)号:US06873581B2

    公开(公告)日:2005-03-29

    申请号:US09994190

    申请日:2001-11-26

    申请人: Hiroki Uemura

    发明人: Hiroki Uemura

    摘要: The semiconductor laser device includes a signal light diffraction grating, and a light receiving portion having a pair of photodiodes extending as two strips with a parting portion or a zonal gap interposed therebetween and receiving a focus error detecting beam from the signal light diffraction grating. The light receiving portion is arranged such that its longitudinal direction is orthogonal to the direction of diffraction grooves of the signal light diffraction grating. The pair of photodiodes is arranged such that a spot of the focus error detecting beam moves, due to temperature changes, in a range essentially limited to the parting portion therebetween. Thus, a semiconductor laser device and an optical pickup apparatus suppressing focus errors due to temperature changes and preventing reduction in signal strength can be obtained.

    摘要翻译: 半导体激光装置包括信号光衍射光栅和具有一对光电二极管的光接收部分,该对光电二极管分成两条,分隔部分或区带间隙插入其间,并接收来自信号光衍射光栅的聚焦误差检测光束。 光接收部分布置成使其纵向方向与信号光衍射光栅的衍射槽的方向正交。 一对光电二极管被布置成使得聚焦误差检测光束的光点由于温度变化而在基本上限于它们之间的分离部分的范围内移动。 因此,可以获得抑制由温度变化引起的焦点误差并防止信号强度降低的半导体激光器件和光学拾取装置。

    Rear-wheel steering apparatus for vehicle
    24.
    发明授权
    Rear-wheel steering apparatus for vehicle 失效
    车辆后轮转向装置

    公开(公告)号:US4949984A

    公开(公告)日:1990-08-21

    申请号:US383091

    申请日:1989-07-21

    IPC分类号: B62D7/15

    CPC分类号: B62D7/1527

    摘要: A rear-wheel steering apparatus for a vehicle includes an output shaft for coupling rear right and left wheels through one shaft, a cam member which is rotatable about an axis extending in a direction perpendicular to the output shaft, a pair of roller members which are provided to the output shaft and are in rolling contact with opposing portions of the outer peripheral surface of the cam member, and an input shaft for rotating the cam member in accordance with a turning amount of front wheels.

    Tuning system for CATV terminal
    25.
    发明授权
    Tuning system for CATV terminal 失效
    有线电视终端调谐系统

    公开(公告)号:US4317215A

    公开(公告)日:1982-02-23

    申请号:US74486

    申请日:1979-09-11

    CPC分类号: H04N7/17309 H04N7/16

    摘要: In a CATV system, channel identifying data is incorporated in each transmitted channel, and subscriber terminals return such data to the CATV center to indicate the channel actually being received. Further, the channel identifying data is compared to the channel selected, and when a proper comparison exists a sweep voltage is held at a predetermined level for the particular channel, to control frequency conversion at the terminal.

    摘要翻译: 在CATV系统中,信道识别数据被并入每个发送的信道中,并且用户终端将这样的数据返回到CATV中心以指示实际接收的信道。 此外,将信道识别数据与所选择的信道进行比较,并且当存在适当的比较时,针对特定信道将扫描电压保持在预定电平,以控制终端的频率转换。

    Video scrambler and descrambler apparatus
    26.
    发明授权
    Video scrambler and descrambler apparatus 失效
    视频加扰器和解扰器装置

    公开(公告)号:US4064536A

    公开(公告)日:1977-12-20

    申请号:US654880

    申请日:1976-02-03

    CPC分类号: H04N7/1713

    摘要: Video signals for television are effectively scrambled and may later be descrambled without the presence of annoying visual disturbances by the introduction of a superposed distorted sine wave in synchronism with the horizontal synchronizing signal, in a "gray sync" mode of operation. Thereafter, the received signal may be normalized and descrambled by compensatory and synchronous modulation. Advantageously, the sinusoidal variation may be imposed both upon aural and visual components of the signal, and the aural AM signal may be utilized as a reference in descrambling the visual component.

    摘要翻译: 电视的视频信号被有效地加扰,并且随后可以通过在“灰阶同步”操作模式中与水平同步信号同步地引入叠加的失真正弦波,而不会出现烦扰的视觉干扰而被解扰。 此后,接收信号可以通过补偿和同步调制被归一化和解扰。 有利地,可以在信号的听觉和视觉分量上施加正弦变化,并且可以将听觉AM信号用作解扰视觉分量的参考。

    Flash apparatus, camera provided with flash apparatus, semiconductor laser device, and method of manufacturing the same
    27.
    发明申请
    Flash apparatus, camera provided with flash apparatus, semiconductor laser device, and method of manufacturing the same 有权
    闪光装置,配有闪光装置的照相机,半导体激光装置及其制造方法

    公开(公告)号:US20050213958A1

    公开(公告)日:2005-09-29

    申请号:US11041026

    申请日:2005-01-21

    申请人: Hiroki Uemura

    发明人: Hiroki Uemura

    摘要: In an embodiment of a flash apparatus, a semiconductor laser device is used as a flash-use light source. Laser light beams are approximately evenly scattered by a reflector plate whose reflection surface is formed of Ag coarse film, whereby illumination of a wide range and safety are secured. In an embodiment of the semiconductor laser device, the semiconductor laser device is disposed such that a longitudinal direction of an imaging area 20a of a camera and a wide direction of far-field patterns 11a1, 12a1 and 12b1 of laser light emitted from the semiconductor laser device match.

    摘要翻译: 在闪光装置的实施例中,使用半导体激光装置作为闪光使用光源。 激光束由反射面大致均匀地散射,其反射面由Ag粗糙膜形成,从而确保了宽范围和安全性的照明。 在半导体激光器件的实施例中,半导体激光器件被设置为使照相机的成像区域20a的纵向方向和远场图案11a,12a和12b1的宽方向 从半导体激光器发射的激光匹配。

    Ventilated disk and process for making same
    29.
    发明授权
    Ventilated disk and process for making same 失效
    通风盘和制造过程

    公开(公告)号:US5004078A

    公开(公告)日:1991-04-02

    申请号:US422896

    申请日:1989-10-18

    IPC分类号: F16D65/00 F16D65/12

    摘要: A ventilated disk used in automobiles and industrial vehicles includes a pair of mutually opposing disk portions, a plurality of radially extending ribs integrally formed with the disk portions and interposed therebetween, and at least one annular damping member. Formed in each rib is at least one radially extending oblong hole which passes through the rib in the circumferential direction. The oblong holes in the respective ribs form at least one circular array along a circular whose center is the center of the disk. The annular damping member(s) extends/extend through the oblong holes forming the annular array(s) and is in contacting engagement with the outer end portion and side portion of each ablong hole.

    摘要翻译: 用于汽车和工业车辆的通风盘包括一对相互相对的盘部分,与盘部分一体地形成并插入其间的多个径向延伸肋和至少一个环形阻尼件。 在每个肋中形成有沿圆周方向穿过肋的至少一个径向延伸的长孔。 相应的肋中的长方形的孔形成沿圆形的至少一个圆形阵列,其中心是圆盘的中心。 环形阻尼件延伸/延伸通过形成环形阵列的长方形孔,并且与每个盲孔的外端部和侧部接触。

    SEAT DEVICE FOR VEHICLE
    30.
    发明申请
    SEAT DEVICE FOR VEHICLE 审中-公开
    车辆座椅装置

    公开(公告)号:US20090248257A1

    公开(公告)日:2009-10-01

    申请号:US12395644

    申请日:2009-02-28

    IPC分类号: G06F17/00 G08B23/00

    摘要: An egress-start determining device determines a start of egress of a passenger seated in a seat of a vehicle. A completion determining device determines completion of a driver's head moving out of a door opening of the vehicle after the start of egress of the passenger. A seat-sitting-face height adjusting device adjusts a height of a sitting face of the seat in such a manner that the height is adjusted to a first height during a time from the start of egress of the passenger to the completion of the driver's head moving out of the door opening of the vehicle, and the height is adjusted to a second height after the completion of the driver's head moving out of the door opening of the vehicle.

    摘要翻译: 出口开始确定装置确定坐在车辆座椅中的乘客的出发开始。 完成确定装置确定驾驶员的头部在乘客出口开始之后从车门开口移出的完成。 座椅坐面高度调节装置以从乘客出口开始到驾驶员头部完成的时间内将高度调整到第一高度的方式调节座椅的坐立面的高度 从车门的开口移出,并且在驾驶员头部从车门开口移出之后将高度调整到第二高度。