公开(公告)号：US08270026B2

公开(公告)日：2012-09-18

申请号：US12348618

申请日：2009-01-05

申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

IPC分类号： G06K15/12 ,  H04N1/04

CPC分类号： H04N1/053 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04784 ,  H04N2201/04789

摘要： A write control circuit includes a first data switching circuit that sets a correspondence relationship between signals from line buffers and input signals to a delay circuitry, based on a signal from a CPU; and a second data switching circuit that sets a correspondence relationship between output signals of the delay circuitry and drive signals, based on a signal from the CPU. This enables a plurality of light emitting sections to be driven properly, regardless of a main scanning direction and an arrangement of a plurality of light spots being in any of CASE-1 to CASE-4 in an optical scanning device.

摘要翻译： 写控制电路包括：第一数据切换电路，其基于来自CPU的信号，将来自线缓冲器的信号和输入信号之间的对应关系设置为延迟电路; 以及第二数据切换电路，其基于来自CPU的信号来设置延迟电路的输出信号和驱动信号之间的对应关系。 这使得能够适当地驱动多个发光部，而不管主扫描方向和在光学扫描装置中的CASE-1至CASE-4中的任何一个的多个光点的布置。

公开(公告)号：US08005321B2

公开(公告)日：2011-08-23

申请号：US11062671

申请日：2005-02-23

申请人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Dan Ozasa

发明人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Dan Ozasa

IPC分类号： G06K7/00

CPC分类号： G02B26/127 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04793 ,  H04N2201/04794

摘要： A pixel clock generator that generates a pixel clock to regulate a drive timing of a scanning light source includes a data generating circuit that generates phase data based on a phase data pattern to correct an uneven scanning speed and fluctuation of scanning widths, and a pixel clock generating circuit generates a pixel clock having a long cycle based on a high-frequency clock and that performs a phase shift for the pixel clock based on the high-frequency clock. The phase pattern is set-such that difference in an amount of the phase shift between the pixel clocks adjacent to each other does not exceed a basic amount of the phase shift of the pixel clock generating circuit.

摘要翻译： 产生用于调节扫描光源的驱动定时的像素时钟的像素时钟发生器包括数据生成电路，其基于相位数据模式生成相位数据，以校正扫描速度不均匀和扫描宽度的波动，以及像素时钟 生成电路基于高频时钟生成具有长周期的像素时钟，并且基于高频时钟执行针对像素时钟的相移。 相位图案被设置为使得彼此相邻的像素时钟之间的相移量的差异不超过像素时钟产生电路的相移的基本量。

公开(公告)号：US07920305B2

公开(公告)日：2011-04-05

申请号：US11882691

申请日：2007-08-03

申请人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Jun Tanabe

发明人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Jun Tanabe

IPC分类号： H04N1/04

CPC分类号： H04N1/40037 ,  G06K15/1219 ,  G06K15/1261 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04787 ,  H04N2201/04794

摘要： An optical scanning device of the invention includes: n-odd (n≧2) light sources disposed at different positions at least in a sub scanning direction; a light source driving control part configured to control a light emitting state of the light source; and a sub-scanning pixel position detecting part configured to depict one pixel with m-odd (n≧m≧2) light sources of the n-odd (n≧2) light sources and to detect a deviation in position of the one pixel in a sub scanning direction, wherein the light source driving control part is configured to correct the deviation in position of the one pixel in the sub scanning direction at a resolution equal to or higher than a density of the pixel, depicted with the m-odd light sources, by controlling the light emitting state of the m-odd light sources on the basis of a result of detection with the sub-scanning pixel position detecting part.

摘要翻译： 本发明的光学扫描装置包括：至少在副扫描方向上设置在不同位置的n奇（n≥2）个光源; 被配置为控制所述光源的发光状态的光源驱动控制部; 以及副扫描像素位置检测部，其被配置为描绘所述n奇数（n≥2）个光源的m奇数（n≥m≥2）个光源的一个像素，并且检测所述一个像素的位置偏差 在副扫描方向上，其中光源驱动控制部被配置为以像素的密度等于或高于像素的密度来校正副扫描方向上的一个像素的位置偏移，以m奇数 基于利用副扫描像素位置检测部分的检测结果控制m个奇数光源的发光状态。

公开(公告)号：US20100045767A1

公开(公告)日：2010-02-25

申请号：US12541719

申请日：2009-08-14

申请人： Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe ,  Masaaki Ishida

发明人： Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe ,  Masaaki Ishida

IPC分类号： B41J2/435 ,  G02B27/20

CPC分类号： G03G15/326 ,  G02B26/12 ,  G03G15/0435 ,  G06K15/1219

摘要： A light-source driving device includes a high-frequency clock generating circuit that generates high-frequency clock signals of which phases are different from each other; an image-data generating circuit that generates a plurality of pieces of image data corresponding to light emitting units in accordance with image information; a write control circuit that generates a plurality of pieces of modulation data corresponding to the light emitting units based on the image data and adjusts output timing of the modulation data individually in units of time corresponding to a phase difference of the high-frequency clock signals; and a light-source driving circuit that drives the light emitting units based on a plurality of pieces of PWM data output from the write control circuit.

摘要翻译： 光源驱动装置包括：高频时钟发生电路，其产生相位彼此不同的高频时钟信号; 图像数据生成电路，根据图像信息生成与发光单元对应的多个图像数据; 写入控制电路，其基于图像数据生成与发光单元对应的多个调制数据，并且以对应于高频时钟信号的相位差的时间为单位分别调整调制数据的输出定时; 以及基于从写入控制电路输出的多条PWM数据驱动发光单元的光源驱动电路。

公开(公告)号：US20090091805A1

公开(公告)日：2009-04-09

申请号：US11913558

申请日：2006-08-30

申请人： Jun Tanabe ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

发明人： Jun Tanabe ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

IPC分类号： H04N1/04

CPC分类号： G02B26/123 ,  B41J2/455 ,  B41J2/473 ,  H04N1/1135 ,  H04N1/40031

摘要： A light scanning apparatus having plural light sources includes a light source control unit configured to control the light sources to form L (L≧2) light beam arrays aligned in a sub scanning direction each of which L light beam arrays are formed by causing M ((N−1)≧M≧1) light sources out of N (N≧2) light sources assigned to each of the L light beam arrays to emit light as M light emitting sources, wherein each of the L light beam arrays forms a pixel and a total of L pixels aligned in the sub scanning direction are formed.

摘要翻译： 具有多个光源的光扫描装置包括光源控制单元，被配置为控制光源以形成沿副扫描方向排列的L（L> = 2）个光束阵列，每个L光束阵列通过使M （N-1）> = M> = 1）分配给每个L光束阵列的N（N> = 2）个光源中的光源作为M个发光源发光，其中L个 光束阵列形成像素，并且形成在副扫描方向上排列的总共L个像素。

公开(公告)号：US07400210B2

公开(公告)日：2008-07-15

申请号：US11608352

申请日：2006-12-08

申请人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa

发明人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa

IPC分类号： H03B5/24 ,  H03L7/06 ,  H03L7/099

CPC分类号： H03L7/0812 ,  H03K3/0315 ,  H03K3/0322 ,  H03L7/0891 ,  H03L7/0995 ,  H03L7/18

摘要： An oscillation frequency control part includes a voltage-to-current converting circuit converting an input voltage to a current having a value corresponding to the input voltage, and outputting a current in proportion to the current obtained from the voltage-to-current converting circuit. An oscillating circuit part includes a ring oscillator, wherein a current in proportion to the output current of the oscillation frequency control part flows through the ring oscillator so that the oscillation frequency in the ring oscillator is controlled by the output current of the oscillation frequency control part. The voltage-to-current converting circuit has linear voltage-to-current conversion characteristics in a predetermined range of the input voltage including a ground potential.

摘要翻译： 振荡频率控制部分包括将输入电压转换为具有与输入电压相对应的值的电流的电压 - 电流转换电路，并且与从电压 - 电流转换电路获得的电流成比例地输出电流。 振荡电路部分包括环形振荡器，其中与振荡频率控制部分的输出电流成比例的电流流过环形振荡器，使得环形振荡器中的振荡频率由振荡频率控制部分的输出电流控制 。 电压 - 电流转换电路在包括接地电位的输入电压的预定范围内具有线性的电压 - 电流转换特性。

公开(公告)号：US20080123160A1

公开(公告)日：2008-05-29

申请号：US11925292

申请日：2007-10-26

申请人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Jun Tanabe

发明人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Jun Tanabe

IPC分类号： H04N1/04

CPC分类号： H04N1/0402 ,  B41J2/473 ,  H04N1/0414 ,  H04N1/0458 ,  H04N1/1911 ,  H04N1/1916

摘要： An optical scanning device includes n-odd (n≧2) light sources disposed at different positions at least in a sub-scanning direction, a pixel forming part in which one pixel is depicted by light beams emitted from m-odd (n≧m≧2) light sources of the n-odd light sources and a distance of adjacent light sources for emitting the light beams in the sub-scanning direction is less than 5 μm, and a light source driving control part configured to control an emitting state of the light sources for depicting the one pixel and conduct an emission driving control for moving a gravity center of the one pixel in the sub-scanning direction.

摘要翻译： 光学扫描装置包括至少在副扫描方向上设置在不同位置的n奇数（n> = 2）个光源，像素形成部分，其中一个像素由从m奇数（n> = m> = 2），并且在副扫描方向上发射光束的相邻光源的距离小于5um，光源驱动控制部件被配置为控制 用于描绘一个像素的光源的发光状态，并且进行用于沿副扫描方向移动一个像素的重心的发射驱动控制。

公开(公告)号：US20070285495A1

公开(公告)日：2007-12-13

申请号：US11741871

申请日：2007-04-30

申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

IPC分类号： B41J2/435

CPC分类号： G02B26/127 ,  G06K15/1219

摘要： In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.

摘要翻译： 在像素时钟创建方法和装置中，产生高频时钟。 以高频时钟的半周期的精度检测扫描预定扫描长度所需的扫描时间，以输出指示检测到的扫描时间的检测值。 将检测值和预定目标值进行比较以输出比较结果。 基于比较结果创建相位数据。 创建基于高频时钟和相位数据来控制相位的像素时钟。

公开(公告)号：US07283151B2

公开(公告)日：2007-10-16

申请号：US10435034

申请日：2003-05-12

申请人： Yasuhiro Nihei ,  Masaaki Ishida

发明人： Yasuhiro Nihei ,  Masaaki Ishida

IPC分类号： B41J2/435

CPC分类号： H04N1/04 ,  B41J2/473 ,  G06K15/1219

摘要： A transition detection circuit detects a transition of a state of a pixel clock, and outputs a detection signal according to a timing of the detected state transition. A control signal generation circuit generates a control signal according to the detection signal and phase data indicating a transition timing of the pixel clock. A pixel clock control circuit causes the state of the pixel clock to transit according to the control signal.

摘要翻译： 转移检测电路检测像素时钟的状态的转变，并且根据检测到的状态转变的定时输出检测信号。 控制信号产生电路根据检测信号和指示像素时钟的转换定时的相位数据产生控制信号。 像素时钟控制电路使像素时钟的状态根据控制信号传送。

公开(公告)号：US07193480B2

公开(公告)日：2007-03-20

申请号：US10854268

申请日：2004-05-27

申请人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa

发明人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa

IPC分类号： H03K3/03

CPC分类号： H03L7/0812 ,  H03K3/0315 ,  H03K3/0322 ,  H03L7/0891 ,  H03L7/0995 ,  H03L7/18

摘要： An oscillation frequency control part includes a voltage-to-current converting circuit converting an input voltage to a current having a value corresponding to the input voltage, and outputting a current in proportion to the current obtained from the voltage-to-current converting circuit. An oscillating circuit part includes a ring oscillator, wherein a current in proportion to the output current of the oscillation frequency control part flows through the ring oscillator so that the oscillation frequency in the ring oscillator is controlled by the output current of the oscillation frequency control part. The voltage-to-current converting circuit has linear voltage-to-current conversion characteristics in a predetermined range of the input voltage including a ground potential.

摘要翻译： 振荡频率控制部分包括将输入电压转换为具有与输入电压相对应的值的电流的电压 - 电流转换电路，并且与从电压 - 电流转换电路获得的电流成比例地输出电流。 振荡电路部分包括环形振荡器，其中与振荡频率控制部分的输出电流成比例的电流流过环形振荡器，使得环形振荡器中的振荡频率由振荡频率控制部分的输出电流控制 。 电压 - 电流转换电路在包括接地电位的输入电压的预定范围内具有线性的电压 - 电流转换特性。