公开(公告)号：US20090219579A1

公开(公告)日：2009-09-03

申请号：US12379718

申请日：2009-02-27

Applicant: Hiroyuki Baba

Inventor： Hiroyuki Baba

IPC: H04N1/40 ,  H04N1/04

CPC classification number: H04N1/1013 ,  H04N1/00652 ,  H04N2201/0402 ,  H04N2201/042 ,  H04N2201/0454 ,  H04N2201/047 ,  H04N2201/04731

Abstract: An image reading device reads a document using a plurality of reading modes including a sheet-through reading mode for reading a document at a fixed reading position while the document is automatically fed. The image reading device includes a first resolution changer, a second resolution changer, and a resolution setting unit. The first resolution changer changes one of a linear velocity at which the document is fed and a traveling speed of a reading carriage to change a resolution at which the document is read in a sub-scanning direction. The second resolution changer electrically interpolates image data output from the first resolution changer to change a resolution of the image data. The resolution setting unit provides a plurality of combinations of resolution change rates between the resolution changers as resolution change modes and sets the resolution changers to one of the combinations of resolution change rates.

Abstract translation: 图像读取装置使用多个读取模式来读取文档，该读取模式包括在文档被自动馈送的同时在固定的读取位置读取文档的平面读取模式。 图像读取装置包括第一分辨率更换器，第二分辨率改变器和分辨率设置单元。 第一分辨率更换器改变文档馈送的线速度和读取滑架的行进速度之一，以改变在副扫描方向上读取文档的分辨率。 第二分辨率变换器电插值从第一分辨率变换器输出的图像数据，以改变图像数据的分辨率。 分辨率设置单元提供分辨率改变器之间的分辨率变化率的多个组合作为分辨率改变模式，并将分辨率改变为分辨率变化率的组合之一。

公开(公告)号：US06300645B1

公开(公告)日：2001-10-09

申请号：US09382939

申请日：1999-08-25

Applicant: David D. Bohn

Inventor： David D. Bohn

IPC: G01N2186

CPC classification number: H04N1/0476 ,  H04N1/047 ,  H04N1/107 ,  H04N2201/047 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04734 ,  H04N2201/04737

Abstract: A position sensing device having a single photosensing element is disclosed herein. The position sensing device determines the location of an object to which the position sensing device is attached relative to a surface. The position sensing device has a plurality of light paths that direct light from different area portions of the surface to the single photosensing element. Each area portion of the surface is associated with a light source wherein each light source may be activated individually. A processor illuminates these area portions individually. As the area portions are illuminated, the photosensing element creates image data representative of the image of the area portion being illuminated. The processor analyzes the image data and identifies distinct features in the area portions. As the object is moved relative to the surface, the locations of these distinct features relative to the photosensing element move. By measuring this movement, the processor is able to determine the velocity, direction of movement, and position of the object relative to the surface.

公开(公告)号：US20170242364A1

公开(公告)日：2017-08-24

申请号：US15427122

申请日：2017-02-08

Applicant: Masashi TOKUDA

Inventor： Masashi TOKUDA

IPC: B41J2/385 ,  H04N1/06 ,  H04N1/29

CPC classification number: G03G15/04036 ,  H04N1/047 ,  H04N1/053 ,  H04N1/06 ,  H04N1/295 ,  H04N2201/0091 ,  H04N2201/047 ,  H04N2201/0471

Abstract: An optical writing device and an image forming apparatus incorporating the optical writing device. The optical writing device includes two or more light sources, a pixel clock generator to measure a scanning speed of one of the two or more light sources and generate a pixel clock of a cycle corrected according to the measured scanning speed, a pulse data generation and output unit to generate pulse width data and shift data for the pixel clock generated by the pixel clock generator to output the generated pulse width data and the generated shift data for each one of the two or more light sources, and a plurality of image pulse generation and output units to generate an image pulse. In the optical writing device, the plurality of image pulse generation and output units are supplied with the pixel clock in common.

公开(公告)号：US09996021B2

公开(公告)日：2018-06-12

申请号：US15427122

申请日：2017-02-08

Applicant: Masashi Tokuda

Inventor： Masashi Tokuda

IPC: G03G15/04 ,  H04N1/06 ,  H04N1/29 ,  H04N1/047 ,  H04N1/053

CPC classification number: G03G15/04036 ,  H04N1/047 ,  H04N1/053 ,  H04N1/06 ,  H04N1/295 ,  H04N2201/0091 ,  H04N2201/047 ,  H04N2201/0471

Abstract: An optical writing device and an image forming apparatus incorporating the optical writing device. The optical writing device includes two or more light sources, a pixel clock generator to measure a scanning speed of one of the two or more light sources and generate a pixel clock of a cycle corrected according to the measured scanning speed, a pulse data generation and output unit to generate pulse width data and shift data for the pixel clock generated by the pixel clock generator to output the generated pulse width data and the generated shift data for each one of the two or more light sources, and a plurality of image pulse generation and output units to generate an image pulse. In the optical writing device, the plurality of image pulse generation and output units are supplied with the pixel clock in common.

公开(公告)号：US20020085079A1

公开(公告)日：2002-07-04

申请号：US10025793

申请日：2001-12-26

Inventor： Shoji Maruyama

IPC: B41J002/01

CPC classification number: H04N1/0473 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/047 ,  H04N2201/0471 ,  H04N2201/04712 ,  H04N2201/04722 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04756 ,  H04N2201/04794

Abstract: A high quality image is obtained by decreasing color aberration and image blurring accompanying the temperature rise in an image forming apparatus while escaping the rise of costs and the increase of the size thereof. A DSP samples a surface image of a transferring belt or a transferring material at a fixed period with a CMOS sensor, and the DSP takes the sampled image into an inner buffer and stores it in an image memory. Next, the DSP performs the comparison operation of the image taken in by the sampling and an image on the image memory that has been sampled at last sampling in advance with an image comparison processing part. Next, the DSP detects a shifted amount of the image in the conveyance direction of the transferring material or the transferring belt. Thereby, it is introduced how many pixels of the last sampled image has shifted in the conveyance direction at the time of the next sampling, and then the movement rate is calculated on the sampling time. The DSP obtains a control rate of a transferring belt driving motor on the result of the calculated movement rate to perform the servo control of the motor.

Abstract translation: 通过降低伴随图像形成装置的温度上升的色差和图像模糊，同时避免成本的上升和其尺寸的增加，获得高质量的图像。 DSP用CMOS传感器以固定的周期对转印带或转印材料的表面图像进行采样，DSP将采样的图像采集到内部缓冲器中并将其存储在图像存储器中。 接下来，DSP通过图像比较处理部分预先执行通过采样获取的图像和在最后采样时已经采样的图像存储器上的图像的比较操作。 接下来，DSP检测转印材料或转印带的输送方向上的图像的偏移量。 由此，引入在下一个采样时，最后采样图像的输送方向上有多少像素已经移动，然后根据采样时间来计算移动速率。 DSP根据计算出的移动速度获得转印带驱动电机的控制率，以执行电动机的伺服控制。

公开(公告)号：US06655774B2

公开(公告)日：2003-12-02

申请号：US10025793

申请日：2001-12-26

Applicant: Shoji Maruyama

Inventor： Shoji Maruyama

IPC: B41J2938

CPC classification number: H04N1/0473 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/047 ,  H04N2201/0471 ,  H04N2201/04712 ,  H04N2201/04722 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04756 ,  H04N2201/04794

Abstract: A high quality image is obtained by decreasing color aberration and image blurring accompanying the temperature rise in an image forming apparatus while escaping the rise of costs and the increase of the size thereof. A DSP samples a surface image of a transferring belt or a transferring material at a fixed period with a CMOS sensor, and the DSP takes the sampled image into an inner buffer and stores it in an image memory. Next, the DSP performs the comparison operation of the image taken in by the sampling and an image on the image memory that has been sampled at last sampling in advance with an image comparison processing part. Next, the DSP detects a shifted amount of the image in the conveyance direction of the transferring material or the transferring belt. Thereby, it is introduced how many pixels of the last sampled image has shifted in the conveyance direction at the time of the next sampling, and then the movement rate is calculated on the sampling time. The DSP obtains a control rate of a transferring belt driving motor on the result of the calculated movement rate to perform the servo control of the motor.

公开(公告)号：US06420723B2

公开(公告)日：2002-07-16

申请号：US09929851

申请日：2001-08-14

Applicant: David D. Bohn

Inventor： David D. Bohn

IPC: G01N2186

CPC classification number: H04N1/0476 ,  H04N1/047 ,  H04N1/107 ,  H04N2201/047 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04734 ,  H04N2201/04737

Abstract: A position sensing device having a single photosensing element is disclosed herein. The position sensing device determines the location of an object to which the position sensing device is attached relative to a surface. The position sensing device has a plurality of light paths that direct light from different area portions of the surface to the single photosensing element. Each area portion of the surface is associated with a light source wherein each light source may be activated individually. A processor illuminates these area portions individually. As the area portions are illuminated, the photosensing element creates image data representative of the image of the area portion being illuminated. The processor analyzes the image data and identifies distinct features in the area portions. As the object is moved relative to the surface, the locations of these distinct features relative to the photosensing element move. By measuring this movement, the processor is able to determine the velocity, direction of movement, and position of the object relative to the surface.

Abstract translation: 本文公开了具有单个感光元件的位置传感装置。 位置检测装置确定位置感测装置相对于表面与其相对的物体的位置。 位置检测装置具有将光从表面的不同区域部分引导到单个感光元件的多个光路。 表面的每个区域部分与光源相关联，其中每个光源可以被单独激活。 处理器分别照亮这些区域部分。 当区域部分被照亮时，光敏元件产生表示被照亮的区域部分的图像的图像数据。 处理器分析图像数据并识别区域部分中的不同特征。 当物体相对于表面移动时，这些不同特征相对于感光元件的位置移动。 通过测量这种运动，处理器能够确定物体相对于表面的速度，运动方向和位置。

公开(公告)号：US20010052581A1

公开(公告)日：2001-12-20

申请号：US09929851

申请日：2001-08-14

Inventor： David D. Bohn

IPC: G01N021/86

CPC classification number: H04N1/0476 ,  H04N1/047 ,  H04N1/107 ,  H04N2201/047 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04734 ,  H04N2201/04737

Abstract: A position sensing device having a single photosensing element is disclosed herein. The position sensing device determines the location of an object to which the position sensing device is attached relative to a surface. The position sensing device has a plurality of light paths that direct light from different area portions of the surface to the single photosensing element. Each area portion of the surface is associated with a light source wherein each light source may be activated individually. A processor illuminates these area portions individually. As the area portions are illuminated, the photosensing element creates image data representative of the image of the area portion being illuminated. The processor analyzes the image data and identifies distinct features in the area portions. As the object is moved relative to the surface, the locations of these distinct features relative to the photosensing element move. By measuring this movement, the processor is able to determine the velocity, direction of movement, and position of the object relative to the surface.

Abstract translation: 本文公开了具有单个感光元件的位置传感装置。 位置检测装置确定位置感测装置相对于表面与其相对的物体的位置。 位置检测装置具有将光从表面的不同区域部分引导到单个感光元件的多个光路。 表面的每个区域部分与光源相关联，其中每个光源可以被单独激活。 处理器分别照亮这些区域部分。 当区域部分被照亮时，光敏元件产生表示被照亮的区域部分的图像的图像数据。 处理器分析图像数据并识别区域部分中的不同特征。 当物体相对于表面移动时，这些不同特征相对于感光元件的位置移动。 通过测量这种运动，处理器能够确定物体相对于表面的速度，运动方向和位置。