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    • 62. 发明授权
    • Method of increasing the signal-to-noise ratio of a time-dependent
scanning signal during performance of a periodic scanning method
    • 在执行周期性扫描方法期间增加时间依赖扫描信号的信噪比的方法
    • US3997774A
    • 1976-12-14
    • US622015
    • 1975-10-14
    • Hansjorg Schlaepfer
    • Hansjorg Schlaepfer
    • H04N5/33F41G7/22G01S3/78G01S3/781G01S3/782G01S3/786H04N3/00
    • F41G7/2293F41G7/2253G01S3/786
    • A method of increasing the signal-to-noise ratio of a time-dependent scanning signal produced during a periodic scanning operation wherein a defined or bounded and centered field is scanned line-by-line by means of a scanning device, there is produced a time-dependent supplementary or additional signal corresponding to the spacing of the momentarily scanned location from the center of the field and possessing a momentary value r as well as a maximum value R. Successive line scans occur in directions which in each instance differ from one another by a predetermined angle in such a manner that as a function of the line width the neighboring lines successively adjoin one another at the field boundary and within the field partially overlap and at the field center completely overlap. From the scanning signal there is produced a multiplicity of primary signals forming a sequence, which in this sequence possess a stepwise time-delay which in each case increases by a period of the line scanning. From the supplementary signal there is produced a multiplicity of auxiliary signals, a respective auxiliary signal is multiplied in a respective multiplier with a respective associated primary signal for producing a respective intermediate signal, and the intermediate signals are summated in an adder for producing an output signal.
    • 一种增加在周期性扫描操作期间产生的与时间相关的扫描信号的信噪比的方法,其中通过扫描装置逐行扫描限定的或有界的中心场, 时间依赖的补充或附加信号,其对应于瞬时扫描位置距离场中心的间隔,并且具有瞬时值r以及最大值R.连续行扫描发生在彼此不同的方向上 以预定的角度,以这样的方式,作为线宽的函数,相邻的线在场边界处和在场内相互邻接地部分地重叠并且在场中心完全重叠。 从扫描信号产生多个形成序列的主要信号,该序列在该序列中具有逐步的时间延迟,每个时间延迟在每种情况下都增加了行扫描的周期。 从补充信号产生多个辅助信号,相应的辅助信号在相应的乘法器中与相应的相关联的主信号相乘以产生相应的中间信号,并且中间信号在加法器中相加以产生输出信号 。
    • 63. 发明授权
    • Raster display histogram equalization
    • US3983320A
    • 1976-09-28
    • US608319
    • 1975-08-25
    • David J. KetchamRoger W. LoweMichael D. PruznickEugene W. Opittek
    • David J. KetchamRoger W. LoweMichael D. PruznickEugene W. Opittek
    • G06T5/40H04N3/00
    • G06T5/007
    • Real time histogram equalization systems for a television type display that performs equalization with one or two dimensional processing on a local area or sliding window basis. For the two dimensional system, the intensity for any particular point in the image is adjusted according to a histogram of the area contained within a window immediately surrounding the point to be equalized. The histogram forming window provided by the system moves across the image in two dimensions both horizontally along each of a plurality of overlapping segments arranged parallel in the vertical dimension, and at each window position reassigned center picture elements are equalized. The processing of the histograms area or the sliding process is continued over the entire surface of the raster with the process being then repeated in a continuous fashion. The area being equalized for each window position may be selected equal horizontally and vertically to the respective amount of shifting along each segment between window positions and of the shifting of the window between adjacent segments. In order to process the histograms at the video rate and resolution the system computes mini or subhistograms from an area formed of a selected number of elements of the histogram in the horizontal dimension by the number of histogram lines in the vertical dimension of the window and sums the statistics of a selected number of the mini histograms to generate one histogram for equalizing the central area. In the continuous process the mini histograms are read out in parallel to form a plurality of histograms and multiple truncation maps which are stored in a selected number of RAM memories. Digital video is then processed through these transformed memories and stored in output buffers which may be required because of the multiplexing. In the system utilizing one dimensional processing, histograms are formed for the data of a selected number of lines in order to equalize the data of a selected line or lines and the histogram window area is moved vertically over the entire raster area.
    • 64. 发明授权
    • Scanning devices
    • US3973826A
    • 1976-08-10
    • US536471
    • 1974-12-26
    • Daniel Richard Lobb
    • Daniel Richard Lobb
    • G02B5/09G02B26/12H04N3/08G02B27/17H04N3/00
    • G02B26/129G02B5/09H04N3/08
    • A mirror drum type of light beam, or other radiation beam, scanning device comprising a rotating mirror drum and an arcuate set of optical, or like, elements arranged coaxially with the mirror drum. An incident beam, directed upon the mirror drum strikes each mirror face in turn as the drum rotates. Each mirror face sweeps the reflected beam across each optical element in turn of the arcuate set. Each optical element is adapted to return the beam to the same mirror face whence it came. The same beam is thereby deflected a second time by the same mirror face to produce an angular rate of rotation of the final reflected beam of four times the angular rate of rotation of the mirror drum.In a modification, a second mirror drum, with convex mirror faces, sweeps the beam over a concave mirror as a pre-scanner, so that the beam follows the reflecting mirror face of the main mirror drum, in rotation. In this modification, the main and second mirror drums may be coaxial and the arcuate set of discrete optical elements replaced by a single element extending over the beam-acceptance arc.
    • 65. 发明授权
    • Method and apparatus for improving acousto-electric scanning
    • 改善声电扫描的方法和装置
    • US3944732A
    • 1976-03-16
    • US549380
    • 1975-02-12
    • Gordon S. Kino
    • Gordon S. Kino
    • H04N3/10H04N3/16H01V7/00H04N3/00
    • H04N3/10
    • An acoustically scanned, optical imaging system for converting patterns of light into electrical signals. The system includes a monolithic convolver that scans incident light patterns using two counter propagating acoustic waves. Located in front of the convolver is an opaque grid that places a spatial periodicity into the light patterns. When the frequencies of the two acoustic waves propagating in the convolver are selected so that the difference between them is a function of the spatial periodicity placed in the light patterns, the minimum threshold signal or dark current from the convolver is substantially reduced. The imaging system also includes four alternative signal generating and processing circuits that can provide a one dimensional scan, a fast Fourier transform and a Fresnel transform of the light patterns incident on the convolver. Patterns of colored light also can be convolved into electrical signals by using colored filters as the grid.
    • 一种声学扫描的光学成像系统,用于将光的模式转换为电信号。 该系统包括使用两个反传播声波扫描入射光图案的单片卷积器。 位于卷积器前面的是一个不透明的栅格,将空间周期放置在光图中。 当选择在卷积器中传播的两个声波的频率使得它们之间的差异是放置在光图案中的空间周期的函数时,来自卷积器的最小阈值信号或暗电流显着减小。 该成像系统还包括四个可替代的信号产生和处理电路,其可以提供入射在卷积器上的光图案的一维扫描,快速傅里叶变换和菲涅耳变换。 通过使用彩色滤光片作为网格,彩色光的图案也可以卷积成电信号。
    • 66. 发明授权
    • High resolution line scanner
    • 高分辨率线扫描仪
    • US3903364A
    • 1975-09-02
    • US49993674
    • 1974-08-23
    • IBM
    • LEAN ERIC GUNG-HWA
    • G06F3/043G06T1/00G10K11/36H01L27/14H04N1/028H04N3/10H04N5/257H04N3/16H01V7/00H04N3/00
    • H04N3/10G10K11/36
    • A high resolution line scanner for converting optical images into electrical signals by a means of photoconductor switches and strain induced resistor sensing. The line scanner includes (1) a plurality of parallel magnetoresistive stripes spaced apart on a low acoustic loss substrate, e.g., fused quartz, glass, etc., (2) a layer of photoconductive material having a time constant less than the time needed to read a line on a moving page covering one end of the magnetoresistive stripes and (3) a transparent electrode covering the photoconductor material and electrically connected to a power source. A scanning acoustic pulse is propagated in the substrate under the magnetoresistive stripes and induces an output by altering the resistivity of the magnetoresistive stripes when the photoconductive layer selectively connects the power source to the magnetoresistive stripes in accordance with an optical image impressed upon the layer.
    • 一种高分辨率线扫描仪,用于通过光电导体开关和应变感应电阻感测将光学图像转换成电信号。 线扫描器包括(1)在低声损耗衬底(例如,熔融石英,玻璃等)上间隔开的多个平行磁阻条,(2)光导材料层,其时间常数小于 在覆盖磁阻条的一端的移动页面上读取一行,和(3)覆盖光电导体材料并电连接到电源的透明电极。 扫描声脉冲在磁阻条纹下方的衬底中传播,并且当光电导层根据印刷在该层上的光学图像选择性地将电源连接到磁阻条纹时,通过改变磁阻条纹的电阻率来诱导输出。
    • 68. 发明授权
    • Positioning and mounting means for a flexible video disk
    • 灵活视频盘的定位和安装方式
    • US3891796A
    • 1975-06-24
    • US42286573
    • 1973-12-07
    • SANYO ELECTRIC CO
    • TAKAHARA ICHIROYABU TADAHIKOFUJITA JIHEI
    • G11B17/028G11B17/035G11B17/04H04N3/00
    • G11B17/049G11B17/035
    • A video disc player of the type having a stationary table and a motor-coupled, rotatable spindle, and utilizing a flexible foiltype disc record adapted to be driven about its center at a predetermined speed together with the rotatable spindle while it hovers on a rotation-induced air cushion above the stationary table, which comprises a record mount mounted on the rotatable spindle and a chucking device cooperative with the record mount for firmly holding the disc record for rotation together with the rotatable spindle. The chucking device includes a cylindrical block and a tapered projection extending from the block and engageable in a socket formed in the record mount. The projection engages in the socket through the central opening of the disc record while the latter is sandwiched between the record mount and the cylindrical block.
    • 该类型的视频盘播放器具有固定台和电动机耦合的可旋转主轴,并且利用柔性箔型盘记录,该记录适于在其可旋转主轴上以预定速度与其可旋转主轴一起围绕其中心被驱动 其包括安装在可旋转主轴上的记录装置和与记录装置配合的夹紧装置,用于牢固地保持盘记录与可旋转主轴一起转动。 夹持装置包括圆柱形块和从该块延伸并可接合在形成在记录载置台上的插座中的锥形突起。 突起通过盘记录的中心开口接合插座,而后者夹在记录支架和圆柱形块之间。
    • 70. 发明授权
    • Measuring of the coordinates of a subject through a television receiver
    • 通过电视接收机测量主体的坐标
    • US3780221A
    • 1973-12-18
    • US3780221D
    • 1964-06-08
    • NARBAITS JAUREGUY J
    • NARBAITS JAUREGUY J
    • G01S3/786H04N17/00H04N3/00
    • H04N17/00G01S3/7864
    • 1. Apparatus for measuring the bearing or elevation of a target displayed on a television screen, comprising a television camera for scanning the area of the target and providing a video signal to a receiver with a cathode ray tube, and, for each bearing or elevation axis, a first saw-tooth generator energised respectively during the synchronisation cycle of the receiver by a synchronising signal, a plurality of selectors comprising triggers successively actuated by a plurality of separate increasing voltages of said saw-tooth signal, a corresponding plurality of slope modifiers each comprising in series an electronic switch and a capacity or a resistance placed in parallel with respect to each other, an integrator R/C incorporating these capacities or resistances and providing a distorted saw-tooth signal, a trip circuit which operates when the voltage of said distorted saw-tooth signal exceeds an adjustable reference voltage and provides a pip signal, a voltmeter measuring said reference voltage, a generator of short pulses of predetermined length energized by said latter trip circuit, and a mixer for adding the video signal and said short pulse and suppling the whole to the T.V. receiver.
    • 1.一种用于测量显示在电视屏幕上的目标的轴承或高度的装置,包括用于扫描目标区域并且向具有阴极射线管的接收器提供视频信号的电视摄像机,以及针对每个轴承或高度 轴,在接收机的同步周期期间分别通过同步信号通电的第一锯齿发电机;多个选择器,包括由所述锯齿信号的多个分开增加的电压依次致动的触发,对应的多个斜率修正器 每个包括串联的电子开关和相对于彼此平行放置的容量或电阻,积分器R / C并入这些容量或电阻并提供失真的锯齿信号,跳闸电路,当电压 锯齿锯信号失真可超过可调参考电压,并提供一个点信号,一个电压表测量说明 由所述后一跳闸电路激励预定长度的短脉冲发生器,以及用于将视频信号和所述短脉冲相加并将整个提供给T.V.接收机的混频器。