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1. 发明授权

US5223857A Pulsed imaging, pulse width modulation raster output scanner for tri-level exposure 失效
标题翻译：脉冲成像，脉冲宽度调制雷达输出扫描仪，用于三级曝光
公开(公告)号：US5223857A
公开(公告)日：1993-06-29
申请号：US756935
申请日：1991-09-09
申请人： Robert P. Loce , Martin E. Banton , Melvin E. Swanberg , William L. Lama , Michael S. Cianciosi , Susan E. Feth , Kevin J. Garcia , Peter K. Wu , Girmay K. Girmay
发明人： Robert P. Loce , Martin E. Banton , Melvin E. Swanberg , William L. Lama , Michael S. Cianciosi , Susan E. Feth , Kevin J. Garcia , Peter K. Wu , Girmay K. Girmay
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12 , G06K15/12 , H04N1/113 , H04N1/40
CPC分类号： G06K15/1204 , G02B26/127 , H04N1/40037
摘要： A pulsed imaging Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a recording medium, one of the levels associated with a specific color.

2. 发明授权

US5260799A Pulsed imaging, pulse width modulation scanner for a tri-level highlight color imaging system 失效
标题翻译：脉冲成像，脉冲宽度调制扫描仪，用于三级高亮彩色成像系统
公开(公告)号：US5260799A
公开(公告)日：1993-11-09
申请号：US756643
申请日：1991-09-09
申请人： Robert P. Loce , Martin E. Banton , Melvin E. Swanberg , William L. Lama , Michael S. Cianciosi , Susan E. Feth , Kevin J. Garcia , Peter K. Wu , Girmay K. Girmay
发明人： Robert P. Loce , Martin E. Banton , Melvin E. Swanberg , William L. Lama , Michael S. Cianciosi , Susan E. Feth , Kevin J. Garcia , Peter K. Wu , Girmay K. Girmay
IPC分类号： G02B26/10 , G02B26/12 , G02F1/33 , G03G15/01 , G06K15/12 , H04N1/113 , H04N1/40
CPC分类号： H04N1/40037 , G06K15/12 , G06K15/129
摘要： A pulsed imaging, facet tracked, Raster Output Scanner utilizes pulse width modulation in conjunction with spatial filtering to form three exposure levels at the surface of a charged photoreceptor medium, one of the levels associated with a specific color. This type of scanner with a nominal video rendering experiences a color line growth in the process direction. The line growth problem is caused by a coherent optical effect. The resultant output print has bolded color lines in the process direction. Several techniques are set forth to compensate for this line growth. In a preferred technique, the video data stream is modified by locating or positioning video pulses representing white information at the start of an associated pixel time period. When the color pixel is imaged, it will therefore, always abut an adjoining white pulse and will be inhibited from spreading into the adjacent pixel period. Other techniques rely upon inversion of white pulses, or separation of white pulses into two signals, each segment moved to the beginning and the end of the associated pixel period. According to another technique, the input data stream is buffered and pixel groups examined to identify neighboring white and color signals. These signals are then either narrowed or in the case of a sequence of color signals, the lead and trail edge of the color signals are trimmed.

3. 发明授权

US4814636A Full pixel pulse stretching for phase reversal scophony transmission 失效
标题翻译：全像素脉冲拉伸用于相位反转传播
公开(公告)号：US4814636A
公开(公告)日：1989-03-21
申请号：US130586
申请日：1987-12-09
申请人： Melvin E. Swanberg
发明人： Melvin E. Swanberg
IPC分类号： H04N1/19 , H03K5/05 , H04N1/29 , H04N1/40 , H04N1/413 , H03K5/04 , H04N5/76
CPC分类号： H03K5/05
摘要： In a phase reversed bit stream, to increase the power in the fundamental frequency and reduce harmonics, each group of positive and negative ON bits is stretched by one pulse width. A stretch of slightly less than one pulse width may also be used to prevent glitches. This invention is useful in an optical raster output scanner where a greater amount of power in the fundamental frequency will result in a grater image intensity for the same data rate.
摘要翻译：在相位反转比特流中，为了增加基频的功率并减少谐波，每组正和负的导通位被拉伸一个脉冲宽度。稍微小于一个脉冲宽度的拉伸也可以用于防止毛刺。本发明在光栅输出扫描器中是有用的，其中基频的更大功率量将导致相同数据速率的较大图像强度。

4. 发明授权

US5164843A Scanner with a linearized VCO pixel clock 失效
标题翻译：带有线性VCO像素时钟的扫描仪
公开(公告)号：US5164843A
公开(公告)日：1992-11-17
申请号：US539577
申请日：1990-06-18
申请人： Melvin E. Swanberg
发明人： Melvin E. Swanberg
IPC分类号： H04N1/053 , H04N1/113 , H04N1/12
CPC分类号： H04N1/053 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04772
摘要： A scanner system includes a light source for producing a light beam and scanning components for directing the light beam to a spot on a surface to be scanned that is located at a predetermined location relative to the scanning means, moving the spot across the surface along a scan line of predetermined length in a series of scan cycles. The system includes a pixel clock that produces a train of clock pulses during each of the scan cycles using a VCO circuit for producing the train of clock pulses and a control circuit for varying the timing of the clock pulses. The control circuit includes an waveshaping circuit for causing the control signal to have a waveform such that the timing of the clock pulses varies according to the position of the spot along the scan line in order to compensate for scanner non-linearity in a manner reducing pixel position distortion. One embodiment includes a digital to analog converter circuit, an absolute value circuit, and a multiple-slope amplifier circuit that shape the control signal waveform to a straight line fit of a desired curve, and the pixel clock circuitry is configured to produce exposure control pulses that reduce pixel exposure distortion.
摘要翻译：扫描仪系统包括用于产生光束的光源和用于将光束引导到相对于扫描装置位于预定位置的待扫描表面上的光点的光源，沿着一个在一系列扫描周期中的预定长度的扫描线。该系统包括像素时钟，其使用用于产生一系列时钟脉冲的VCO电路在每个扫描周期期间产生一串时钟脉冲，以及控制电路，用于改变时钟脉冲的定时。控制电路包括波形整形电路，用于使控制信号具有波形，使得时钟脉冲的定时根据点沿着扫描线的位置而变化，以便以减少像素的方式补偿扫描器的非线性位置失真。一个实施例包括将控制信号波形整形为期望曲线的直线拟合的数模转换器电路，绝对值电路和多斜率放大器电路，并且像素时钟电路被配置为产生曝光控制脉冲减少像素曝光失真。

5. 发明授权

US4694156A Pixel placement sensing arrangement using split detecting elements 失效
标题翻译：使用分割检测元件的像素放置感测装置
公开(公告)号：US4694156A
公开(公告)日：1987-09-15
申请号：US797355
申请日：1986-02-14
申请人： Melvin E. Swanberg
发明人： Melvin E. Swanberg
IPC分类号： G06K15/12 , H04N1/053 , H04N1/04
CPC分类号： H04N1/053 , G06K15/1219 , H04N2201/0471 , H04N2201/04712 , H04N2201/04777
摘要： A pixel placement sensing arrangement, useable in a spatial synchronization system, having a split photodetector, RC integrating circuits having time constants long relative to the exposure time of the photodetector connected to the respective halves of the split photodetector such that the current accumulated in the capacitors of the integrating circuits results in voltages proportional to the respective exposures of the halves of the photodetector, and a different amplifier which provides an output reflective of any difference in said voltages.
摘要翻译：一种可用于空间同步系统中的像素布置感测装置，具有分离光电检测器，RC积分电路，其具有相对于连接到分离光电检测器的相应半部的光电检测器的曝光时间长的长度常数，使得积聚在电容器中的电流的积分电路产生与光电检测器的两半的相应曝光成比例的电压，以及提供反映所述电压中任何差异的输出的不同放大器。

6. 发明授权

US5196949A Vestigial sideband scophony imaging modulator 失效
标题翻译：残留边带成像调制器
公开(公告)号：US5196949A
公开(公告)日：1993-03-23
申请号：US597921
申请日：1990-10-10
申请人： Melvin E. Swanberg
发明人： Melvin E. Swanberg
IPC分类号： G02B26/12 , H04N1/04 , H04N1/053 , H04N1/113
CPC分类号： H04N1/053 , G02B26/12 , H04N1/1135 , H04N2201/04765
摘要： A swept frequency modulator for use in a "Scophony" raster output scanner is disclosed. Input video [136] is mixed with a fixed RF frequency [137] provided by a fixed frequency oscillator [138], in a first mixer [139]. The resulting amplitude modulated RF [140] is fed into a vestigial sideband filter [142], producing a vestigial sideband signal [144], which is in turn fed into a second mixer [148], where it is mixed with a swept RF frequency [147]. The output of the second mixer [148] is swept frequency vestigial sideband RF [150], which is input to a driver [152]. The driver [152] drives an acoustooptic modulator [154], which modulates optical beam [156] to produce a modulated, facet-tracking beam [158]. The modulated optical beam [158] tracks a facet of a rotating mirror array which scans it across the photoreceptor. The invention enables achievement of all the potential advantages of a Scophony raster output flying spot scanner: (a) high image resolution, (b) improved depth of focus, and (c) linear system response.
摘要翻译：公开了一种用于“Scophony”光栅输出扫描器的扫频调制器。输入视频[136]与由固定频率振荡器[138]提供的固定RF频率[137]混合在第一混频器[139]中。所得到的幅度调制RF [140]被馈送到残留边带滤波器[142]中，产生残留边带信号[144]，残留边带信号[144]又被馈送到第二混频器[148]，其中它与扫频RF频率 [147]。第二混频器148的输出是被输入到驱动器[152]的扫频频残留边带RF [150]。驱动器[152]驱动声光调制器[154]，其调制光束[156]以产生调制的小面跟踪光束[158]。调制光束跟踪旋转镜阵列的一个小面，扫描其横跨感光体。本发明能够实现Scophony光栅输出飞点扫描仪的所有潜在优点：（a）高图像分辨率，（b）改进的焦深，和（c）线性系统响应。

7. 发明授权

US5193013A Scanner with non-linearity compensating pixel clock 失效
标题翻译：具有非线性补偿像素时钟的扫描仪
公开(公告)号：US5193013A
公开(公告)日：1993-03-09
申请号：US529959
申请日：1990-05-29
申请人： Melvin E. Swanberg
发明人： Melvin E. Swanberg
IPC分类号： H04N1/053 , H04N1/113
CPC分类号： H04N1/053 , H04N1/1135 , H04N2201/0471 , H04N2201/04772
摘要： A scanner system includes a light source for producing a light beam and a scanner for directing the light beam to a spot on a surface to a be scanned and for moving the spot across the surface along a scan line of predetermined length in a series of scan cycles. A reference clock produces a train of M reference pulses during each of the scan cycles such that each of the reference pulses represents the occurrence of a respective one of M segments of the scan cycle. An oscillator produces a train of clock pulses for use in controlling the light beam at a predetermined number of desired pixel positions along the scan line while a frequency control circuit responsive to the reference pulses varies the frequency of the oscillator during the occurrence of each of the M segments of the scan cycle in order to approximate an ideal frequency variation curve the entire scan cycle.
摘要翻译：扫描仪系统包括用于产生光束的光源和用于将光束引导到要被扫描的表面上的点的扫描器，并且用于沿着一系列扫描中的预定长度的扫描线在整个表面上移动斑点周期。参考时钟在每个扫描周期期间产生一串M个参考脉冲，使得每个参考脉冲表示扫描周期的M个段的相应一个的出现。振荡器产生一串时钟脉冲，用于在沿着扫描线的预定数量的期望像素位置处控制光束，而响应于参考脉冲的频率控制电路在每个的发生期间改变振荡器的频率 M段扫描周期为了近似理想的频率变化曲线整个扫描周期。

8. 发明授权

US5103334A Resolution improvement in flying spot scanner 失效
标题翻译：飞行扫描仪的分辨率改进
公开(公告)号：US5103334A
公开(公告)日：1992-04-07
申请号：US623156
申请日：1990-11-06
申请人： Melvin E. Swanberg
发明人： Melvin E. Swanberg
IPC分类号： G02B26/12 , G06K15/12 , H04N1/053 , H04N1/113 , H04N5/257
CPC分类号： H04N1/053 , G06K15/1204 , H04N1/1135 , H04N2201/04763 , Y10S359/90
摘要： An improved flying spot scanner (48, 68) is disclosed, which is particularly applicable to use with a raster output scanner (ROS). The primary scan provided by an ROS is a continuous scan of the optical beam (26) along the scan line (40). The present invention provides a discontinuous pixel-by-pixel scan in the opposite direction to the continuous primary scan. Thus each pixel is positioned statically at its correct location on the photoreceptor (54) during the pixel's duration. At the end of each pixel's duration, the beam snaps rapidly to the position of the next pixel. Use of this invention will form a non-blurred image of each pixel on the photoreceptor (54). The invention uses an optical deflector (50, 70) to drive the beam opposite to the direction of the primary beam scan during each pixel's duration. The optical deflector (50, 70) may be an angle deflector (50) when used in a collimated optical beam (60), or it may be a translation deflector (70) when used in a non-collimated optical beam (72). This invention provides a flying spot scanner (48, 68) in which all the gray scale detail and resolution available in a pixel is preserved, with no smearing or blurring of pixels, independent of the content of adjacent pixels.

9. 发明授权

US4011446A Device for producing a signal indicating the directional movement required to achieve focus 失效
标题翻译：用于产生指示实现焦点所需的定向运动的信号的装置
公开(公告)号：US4011446A
公开(公告)日：1977-03-08
申请号：US569425
申请日：1975-04-18
申请人： Melvin E. Swanberg
发明人： Melvin E. Swanberg
IPC分类号： G03B27/52 , G01J1/20 , G01B3/00
CPC分类号： G03B27/522
摘要： A light focus sensor having first and second grids comprised of interlaced light transmissive and light reflective portions and a rotating optical modulator comprised of a plurality of alternate light transparent and light opaque portions. The modulator portions are half the size of the reflective portions of the grids and the modulator is positioned in relation to the grids such that the phase relationship between the portions of one grid and the portions of the modulator is 180.degree. different than the phase relationship between the portions of the other grid and the portions of the modulator such that the composite signal passing through the modulator is indicative of the directional movement required to achieve focus.
摘要翻译：一种具有第一和第二栅格的光聚焦传感器，其包括隔行透光和光反射部分，以及由多个交替的透光和不透光部分组成的旋转光调制器。调制器部分是栅格反射部分尺寸的一半，并且调制器相对于栅格定位，使得一个栅格的部分和调制器的部分之间的相位关系与180°的相位关系不同于另一个网格的部分和调制器的部分使得通过调制器的复合信号指示实现焦点所需的定向移动。

10. 发明授权

US5117243A Scanner with electronic non-linearity compensation and method of processing image data 失效
标题翻译：具有电子非线性补偿的扫描仪和处理图像数据的方法
公开(公告)号：US5117243A
公开(公告)日：1992-05-26
申请号：US506683
申请日：1990-04-06
申请人： Melvin E. Swanberg , Yee-Ming Chung , Raymond Eskenazi , Robert T. Cunningham
发明人： Melvin E. Swanberg , Yee-Ming Chung , Raymond Eskenazi , Robert T. Cunningham
IPC分类号： H04N1/053 , H04N1/113 , H04N1/12 , H04N1/401 , H04N1/407
CPC分类号： H04N1/4015 , H04N1/053 , H04N1/407 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04774
摘要： A scanner system includes a light source and scanning components for moving a spot of light across a surface along a scan line of predetermined length. An electronic control system is included for controlling the light beam in order to produce a plurality of pixels on the surface along the scan line. It is configured to control the position and exposure of each of the pixels in order to compensate for pixel position distortion and pixel exposure distortion caused by variations in spot velocity. Preferably, the control system produces a digital scan clock signal or other control signal that defines a pixel interval and an exposure interval for each of a plurality of desired pixel positions along the scan line according to stored pixel interval and exposure interval data.
摘要翻译：扫描仪系统包括光源和用于沿着预定长度的扫描线沿着表面移动光斑的扫描部件。包括用于控制光束的电子控制系统，以便沿着扫描线在表面上产生多个像素。它被配置为控制每个像素的位置和曝光，以补偿由点速度变化引起的像素位置失真和像素曝光失真。优选地，控制系统产生数字扫描时钟信号或其他控制信号，其根据存储的像素间隔和曝光间隔数据，沿着扫描线定义多个期望像素位置中的每一个的像素间隔和曝光间隔。

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