公开(公告)号：US4683551A

公开(公告)日：1987-07-28

申请号：US594211

申请日：1984-03-28

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: G06K15/12 ,  G06F13/00

CPC classification number: G06K15/128

Abstract: Random access memory (RAM) clock switching circuitry for a laser printer having a RAM for storage of microprocessor information plus storage of font information with separate clock generators is provided for use in accessing the two types of information. The switching circuitry has a switch portion for alternately connecting the clock generators to a lockout circuit portion. A lockout request signal from the laser printer microprocessor determines when clock pulses presented to the lockout circuit can be applied to the RAM.

Abstract translation: 提供了用于具有RAM的用于存储微处理器信息的激光打印机的随机存取存储器（RAM）时钟切换电路以及具有单独的时钟发生器的字体信息存储，用于访问两种类型的信息。 开关电路具有用于将时钟发生器交替地连接到锁定电路部分的开关部分。 来自激光打印机微处理器的锁定请求信号确定提供给锁定电路的时钟脉冲何时可以应用于RAM。

公开(公告)号：US4631726A

公开(公告)日：1986-12-23

申请号：US470489

申请日：1983-02-28

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: H04N1/113 ,  G06K15/12 ,  H01S5/062 ,  H01S5/068 ,  H01S5/0683 ,  H01S3/13

CPC classification number: H01S5/06209 ,  G06K15/1209 ,  G06K15/1214 ,  H01S5/0683

Abstract: Circuitry for control of the level of light output from a laser diode that is adapted to direct its light output to a resonant scanning mirror including a biasing current circuit portion for providing a current level for the laser diode at a desired set point and a circuit portion connected to the laser diode which reduces the current through the laser diode by an amount that is inversely proportional to the velocity of the scanning mirror so the amount of light energy received from the scanning mirror at any portion of a scan surface covered by the scanning mirror will be the same when the laser diode is on. Another circuit portion is also connected directly to the laser diode to selectively reduce the current through the laser diode to a level that is below the laser diode threshold current in accordance with binary signals supplied to such circuit portion.

Abstract translation: 用于控制来自激光二极管的光输出电平的电路，其适于将其光输出引导到包括偏置电流电路部分的谐振扫描反射镜，所述偏置电流电路部分用于在期望的设定点处为激光二极管提供电流电平;以及电路部分 连接到激光二极管，其将通过激光二极管的电流减小与扫描反射镜的速度成反比的量，从而在由扫描镜覆盖的扫描表面的任何部分处从扫描反射镜接收的光能量 激光二极管接通时将相同。 另一个电路部分也直接连接到激光二极管，以根据提供给这种电路部分的二进制信号选择性地将通过激光二极管的电流降低到低于激光二极管阈值电流的电平。

公开(公告)号：US4541061A

公开(公告)日：1985-09-10

申请号：US434189

申请日：1982-10-13

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: G02B26/10 ,  G06F1/08 ,  G06K15/12 ,  H04N1/04 ,  H04N1/23 ,  H04N1/22

CPC classification number: G06K15/1219

Abstract: Clocking circuitry for providing clocking signals in accordance with a preprogrammed sequence of rates. An addressable memory is included having data defining such rates with a voltage controlled oscillator (VCO) controlled via data from the addressable memory. An address producing means is controlled by the clocking signals of the VCO to provide an address signal for the memory in response to each clocking signal. The clocking circuitry is used with a moving mirror for a laser printer apparatus, the mirror having a known repetitive movement which is used in establishing the preprogrammed sequence of rates.

Abstract translation: 时钟电路，用于根据预编程的速率顺序提供时钟信号。 包括可寻址存储器，其具有通过经由可寻址存储器的数据控制的压控振荡器（VCO）来定义这种速率的数据。 地址产生装置由VCO的时钟信号控制，以响应于每个时钟信号为存储器提供地址信号。 时钟电路与激光打印机设备的移动镜一起使用，镜子具有已知的重复运动，用于建立预编程的速率序列。

公开(公告)号：US6148134A

公开(公告)日：2000-11-14

申请号：US276007

申请日：1999-03-25

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: B41J2/44 ,  B41J2/46 ,  G02B6/04 ,  G02B6/36 ,  G02B6/00

CPC classification number: G02B6/3636 ,  B41J2/44 ,  B41J2/46 ,  G02B6/04 ,  G02B6/3616

Abstract: A digital color printer uses different mounts for holding fibers that transport light from a distribution device to light modulators. One mount, for holding the optical fibers relative to a photosensitive surface, includes a body a body having a plurality of slots therethrough to receive the optical fibers. Each slot is provided with a funnel-shaped opening on an edge of the body. The slots are substantially parallel to each other and angled relative to the edge of the body. The slots have widths selected so that, when placed within the slots, the optical fibers form essentially linear arrays. Another mount, for grouping optical fibers to receive light from a light source, includes an element having a plurality of wells therethrough, each well connecting to an edge of the element by a respective channel section. Each channel section has a funnel-shaped section at the element edge. Each well has a shape selected so that input ends of fibers grouped in the well optimally couple light from the light source. A method of winding a fiber optic harness using the mounts is presented.

Abstract translation: 数字彩色打印机使用不同的支架来保持将光从分配装置传输到光调制器。 用于将光纤相对于感光表面保持的一个安装件包括主体，该主体具有穿过其中的多个槽以容纳光纤。 每个槽在主体的边缘上设有漏斗状的开口。 狭槽基本上彼此平行并且相对于身体的边缘成角度。 狭槽具有选择的宽度，使得当放置在狭槽内时，光纤基本上形成线性阵列。 用于将光纤分组以接收来自光源的光的另一安装件包括具有穿过其中的多个孔的元件，每个孔通过相应的通道部连接到元件的边缘。 每个通道部分在元件边缘处都有一个漏斗状部分。 每个井具有选择的形状，使得分组在井中的光纤的输入端最佳地耦合来自光源的光。 提出了一种使用安装座缠绕光纤线束的方法。

公开(公告)号：US4870498A

公开(公告)日：1989-09-26

申请号：US96961

申请日：1987-09-15

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: H04N1/419

CPC classification number: H04N1/419

Abstract: Transition-encoded information for a single scan line of a font image consists of flags at the addresses of all points of transition upon the scan line from black to white, and from white to black, in order to generate one scan line of the font image. This information is produced, scan line by scan line, in a system receiving the vertical position, the horizontal position, and a starting address within a font memory whereat a run-length-encoded description of a particular character font is stored. This information is developed by adding, in an adder, the initial horizontal displacement plus, in a cumulative fashion, the run-length-encoded font information for each character which appears, in some portion, upon an individual scan line. The transition-encoded information is used to control pixel by pixel image generation in an image generator equivalently to full bit-mapped control but with lower cost, higher speed of conversion, and greater flexibility in the images generated.

Abstract translation: 字体图像的单个扫描行的转换编码信息由扫描线从黑色到白色，从白色到黑色的所有转换点的地址处的标志组成，以便生成字体图像的一条扫描线 。 在收到垂直位置的系统，水平位置以及存储特定字符字体的游程长度编码的描述的字体存储器内的起始地址产生该信息。 该信息是通过在加法器中加入初始水平位移加上以累积方式加上在某一部分上出现在单个扫描线上的每个字符的游程长度编码字体信息来开发的。 转换编码信息用于控制图像生成器中的像素图像生成，等效于全位映射控制，但成本更低，转换速度更快，并且生成的图像具有更大的灵活性。

公开(公告)号：US4630223A

公开(公告)日：1986-12-16

申请号：US586204

申请日：1984-03-05

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: G06K15/12 ,  G01D15/14

CPC classification number: G06K15/1219

Abstract: Circuitry for controlling the amplitude of a self-resonant scanner including a first means for measuring the time to complete a number of full cycle scanner movements, a second means for measuring the time to complete a number of movements between a first fixed point and a second fixed point in the scan path and logic means using such time measurements to determine whether the scanner amplitude is greater or less than a desired amplitude and providing digital information to produce an analog signal for controlling the scanner amplitude to reduce any difference from the desired amplitude.

Abstract translation: 用于控制自谐振扫描器的振幅的电路，包括用于测量完成多个全周期扫描器运动的时间的第一装置，用于测量在第一固定点和第二固定点之间完成多个运动的时间的第二装置 扫描路径中的固定点和逻辑装置使用这种时间测量来确定扫描仪幅度是否大于或小于期望的幅度，并提供数字信息以产生用于控制扫描仪幅度的模拟信号，以减少与期望幅度的任何差异。

公开(公告)号：US4586057A

公开(公告)日：1986-04-29

申请号：US589772

申请日：1984-03-15

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: G06K15/12 ,  G01D9/42

CPC classification number: G06K15/1219

Abstract: Compensation circuitry for a laser printer using a self-resonant scanner wherein a clock generator (VCO) and an address counter operated between start of scan (SOS) and end of scan (EOS) signals are used in the generation of data clock signals. A flip-flop circuit is connected to receive the EOS signal and the output from a higher order bit output of the address counter to provide logic circuitry with an indication of whether the clock generator (VCO) frequency should be raised or lowered. The logic circuitry provides an input to a digital to analog means which is connected to the control input of the clock generator (VCO).

Abstract translation: 使用自谐振扫描器的激光打印机的补偿电路，其中在产生数据时钟信号中使用时钟发生器（VCO）和在扫描开始（SOS）和扫描结束（EOS））之间操作的地址计数器。 连接触发器电路以接收EOS信号和来自地址计数器的较高阶位输出的输出，以向逻辑电路提供是否应升高或降低时钟发生器（VCO）频率的指示。 逻辑电路为连接到时钟发生器（VCO）的控制输入的数模转换装置提供输入。

公开(公告)号：US4242565A

公开(公告)日：1980-12-30

申请号：US045821

申请日：1979-06-05

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: B41J2/335 ,  B41J2/345 ,  H05B1/00

CPC classification number: B41J2/345 ,  H01L2924/0002

Abstract: A thermal print head with a plurality of spaced-apart electrical conductors carried by a support with a surface area provided at an end portion of each conductor. A common electrical conductor is provided having a thin portion for each surface area which is spaced from and essentially parallel to the surface area with resistive material disposed between the common electrical conductor and each of the surface areas. The print head provides a path for current flow and thermal flow through the resistive material in a direction essentially perpendicular to the surface areas.

Abstract translation: 一种具有多个间隔开的电导体的热敏打印头，其由具有设置在每个导体的端部处的表面区域的支撑件承载。 公共电导体被提供有用于每个表面区域的薄部分，其与布置在公共电导体和每个表面区域之间的电阻材料间隔开并且基本上平行于表面区域。 印刷头在基本上垂直于表面区域的方向上提供电流和热流通过电阻材料的路径。

公开(公告)号：US3982124A

公开(公告)日：1976-09-21

申请号：US620635

申请日：1975-10-08

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: G02B7/182 ,  G05D3/14 ,  H01J3/14

CPC classification number: G02B7/1828 ,  G05D3/14

Abstract: Apparatus and circuitry for positioning a mirror at a desired position includes an electric to rotary motion transducer means connected with the mirror which is controlled by a signal obtained in response to an electrical positioning signal and a feedback signal derived from the actual mirror position. An electro-optical sensing means resonsive to the actual position of the mirror provides the feedback signal. The circuitry is automatically calibrated.

Abstract translation: 用于将反射镜定位在所需位置的装置和电路包括与反射镜相连的电动旋转运动传感器装置，其由响应于电定位信号而获得的信号和从实际镜位置导出的反馈信号控制。 与镜的实际位置相关的电光感测装置提供反馈信号。 电路自动校准。

公开(公告)号：US3934136A

公开(公告)日：1976-01-20

申请号：US466976

申请日：1974-05-06

Applicant: David J. Schoon

Inventor： David J. Schoon

IPC: G01R19/165 ,  H04N1/403 ,  H01J39/12

CPC classification number: H04N1/403 ,  G01R19/16576

Abstract: Circuitry providing a scanning threshold for a scanning apparatus in response to the output of a photomultiplier of the apparatus produced during a threshold determining scan of the field uses a first memory circuit to store a signal level indicative of the maximum light intensity sensed by the photomultiplier with a second memory circuit provided to store a signal level indicative of the minimum light intensity sensed. A threshold circuit connects with the stored signals to provide a threshold signal intermediate the two stored signal levels. An inhibiting circuit may be provided to prevent the second memory circuit from responding to signals below a predetermined level. Inhibiting circuitry and memory deletion circuitry are used to condition the memories prior to and immediately following a threshold determining scan.

Abstract translation: 响应于在该场的阈值确定扫描期间产生的装置的光电倍增器的输出，为扫描装置提供扫描阈值的电路使用第一存储器电路来存储指示由光电倍增管感测的最大光强度的信号电平， 第二存储器电路，用于存储指示感测的最小光强度的信号电平。 门限电路与所存储的信号相连，以提供两个存储的信号电平之间的阈值信号。 可以提供禁止电路以防止第二存储器电路响应低于预定电平的信号。 抑制电路和存储器删除电路用于在阈值确定扫描之前和之后立即调节存储器。