公开(公告)号：US06381043B1

公开(公告)日：2002-04-30

申请号：US09275507

申请日：1999-03-24

Applicant: Jenn-Tsair Tsai ,  Bill Chen

Inventor： Jenn-Tsair Tsai ,  Bill Chen

IPC: H04N104

CPC classification number: H04N1/047 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/0472 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04749

Abstract: A device for quickly and precisely determining a scan start point and improving scanning quality for an image scanner is disclosed. The image scanner includes a photo-processing device and a scanning platform for placing thereon a document to be scanned. The scanning platform is printed with a background region and two color blocks. The two color blocks are separately enclosed by the background region and are of different color from the color of the background region. The first color block has a first specified point therein being a predetermined shift to the scan start point along a specific direction. The second block has a second specified point corresponding to the first specified point in position. The photo-processing device moves a predetermined distance L0 from the home position to a pre-scan position overlapping with the two color blocks by four reference points, read the coordinates of the four reference points, then moves a calculated distance L1 from the pre-scan position to the first specified point, and moves another predetermined distance L2 from the specified point to the scan start point along the specific direction to start scanning. The distance L1 can be automatically adjusted to cover the installation error of the photo-processing device. According to the coordinates of the four reference points, the coordinates of the two specified points can be calculated, thereby realizing a deflection rate and/or an amplification error of a scanning result. For another image scanner disclosed herein, the movement of the distance L0 can be omitted by having the color blocks located at the home position which serves as the pre-scan position.

Abstract translation: 公开了一种用于快速且精确地确定扫描起始点并提高图像扫描仪的扫描质量的装置。 图像扫描仪包括照相处理装置和用于放置待扫描文件的扫描平台。 扫描平台印有背景区域和两个颜色块。 两个颜色块分别由背景区域包围，并且与背景区域的颜色不同。 第一颜色块在其中具有沿着特定方向的扫描开始点的预定移位的第一指定点。 第二块具有与第一指定点对应的第二指定点。 照相处理装置将预定距离L0从初始位置移动到与两个颜色块重叠的预扫描位置四个参考点，读取四个参考点的坐标，然后从预处理装置移动计算出的距离L1， 将扫描位置移动到第一指定点，并且沿着特定方向将另一预定距离L2从指定点移动到扫描开始点以开始扫描。 可以自动调整距离L1以覆盖照相处理设备的安装错误。 根据四个参考点的坐标，可以计算两个指定点的坐标，从而实现扫描结果的偏转率和/或放大误差。 对于本文公开的另一图像扫描仪，可以通过使颜色块位于用作预扫描位置的原始位置来省略距离L0的移动。

公开(公告)号：US20020043166A1

公开(公告)日：2002-04-18

申请号：US09972244

申请日：2001-10-09

Applicant: Dainippon Screen Mfg. Co., Ltd.

Inventor： Tsuyoshi Okuda

IPC: B41F005/16 ,  B41F005/18

CPC classification number: H04N1/00015 ,  B41F33/0036 ,  B41F33/0081 ,  B41P2227/70 ,  B41P2233/51 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/00718 ,  H04N1/00737 ,  H04N1/00761 ,  H04N1/00774 ,  H04N2201/04703 ,  H04N2201/04718 ,  H04N2201/04732 ,  H04N2201/04767

Abstract: A reading time setting section (44) determines a read area for an imaging section (25) on the basis of color chart positional data (id). The imaging section (25) reads an image on printing paper during the reading time and readout image data (rd) is stored in an image data storage section (45). A reference mark detecting section (46) detects the positions of reference marks from the readout image data (rd). A color chart actual position calculation section (47) corrects a tilt of a color chart determined from the positions of the reference marks and calculates an actual position of each of color chart fields (cr). An image data readout section (48) reads out image data on a color chart field corresponding to the calculated actual position. At the same time, image data on a white color field immediately above the color chart field is also read out. A white color correction section (49) produces a white reference on the basis of the image data on the white color field and corrects the image data on the color chart field. A color chart information determination section (50) measures color chart information, such as a color density and a dot percentage, about each of the color chart fields. This printing press determines a reading time on the basis of the position of the color chart at the time of printing plate recording and thereby allows imaging of an area including the color chart on the printing paper being transported.

Abstract translation: 读取时间设定部（44）基于色图位置数据（id）确定摄像部（25）的读取区域。 成像部（25）在读取时刻读取打印纸上的图像，读出图像数据（rd）被存储在图像数据存储部（45）中。 参考标记检测部分（46）根据读出的图像数据（rd）检测参考标记的位置。 彩色图表实际位置计算部分（47）根据参考标记的位置校正颜色图表的倾斜度并计算每个色彩图表字段（cr）的实际位置。 图像数据读出部（48）读出与计算出的实际位置对应的彩色图表字段上的图像数据。 同时，还读出了在颜色图表字段之上的白色字段上的图像数据。 白色校正部（49）基于白色字段上的图像数据产生白色基准，并且校正彩色图表字段上的图像数据。 彩色图表信息确定部分（50）针对每个彩色图表字段测量诸如颜色密度和点百分比之类的颜色图表信息。 该印刷机基于印版登录时的色彩图的位置确定读取时间，从而允许在被传送的打印纸上对包括色图的区域进行成像。

公开(公告)号：US06249359B1

公开(公告)日：2001-06-19

申请号：US09007397

申请日：1998-01-15

Applicant: Mikio Aoki ,  Takashi Nitta

Inventor： Mikio Aoki ,  Takashi Nitta

IPC: H04N1024

CPC classification number: H04N1/047 ,  H04N1/107 ,  H04N1/193 ,  H04N2201/02439 ,  H04N2201/04703 ,  H04N2201/04734 ,  H04N2201/04743 ,  H04N2201/04787 ,  H04N2201/04794

Abstract: An image-scanning device which includes an image input unit possessing an image sensor unit that reads images such as characters and graphics on a manuscript illuminated by a light source, transfers the image data corresponding to the read data in a specified size after issuing an image data transfer interrupt request; and an image processing unit possessing a ring buffer that stores the image data being sent from the image input unit on a specified data size basis in specified areas, and which performs image correction on the image data stored in this ring buffer between image data transfer interrupt requests from the image input unit.

Abstract translation: 一种图像扫描装置，包括具有图像传感器单元的图像输入单元，该图像传感器单元在由光源照射的原稿上读取诸如文字和图形的图像，在发布图像之后传送与所读取的数据相对应的图像数据 数据传输中断请求; 以及图像处理单元，其具有环形缓冲器，其以指定的数据大小为基础存储从图像输入单元发送的图像数据，并且在图像数据传送中断之间对存储在该环形缓冲器中的图像数据进行图像校正 来自图像输入单元的请求。

公开(公告)号：US06219463B1

公开(公告)日：2001-04-17

申请号：US09003585

申请日：1998-01-06

Applicant: Haruhiro Hyodo

Inventor： Haruhiro Hyodo

IPC: G06K932

CPC classification number: H04N1/0405 ,  G06K7/10722 ,  H04N1/0432 ,  H04N1/0458 ,  H04N1/0473 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/02416 ,  H04N2201/04703 ,  H04N2201/04715 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04755 ,  H04N2201/04791

Abstract: There is provided an image reading device capable of preventing disorder of an aspect ratio of an image even when a reading magnification ratio deviates from a set value due to a mechanical error and easily obtaining an accurate image. In this image reading device, a reference mark and a center mark of a line pattern of a reference pattern are projected on a CCD by a zoom lens, and an actual projection magnification ratio of the zoom lens is detected by use of addresses of pixels corresponding to a projection image. Then, a sub-scanning speed calculating section calculates a sub-scanning speed corresponding to the detected actual projection magnification ratio and drives a sub-scanning motor. Therefore, the sub-scanning speed corresponding to the actual projection magnification ratio is set regardless of the presence or absence of a magnification ratio error attributed to a mechanical error in a zooming stage on the lens side, thereby allowing an image accuracy to be guaranteed.

Abstract translation: 提供了一种图像读取装置，即使当读取倍率由于机械误差而偏离设定值并且容易获得准确的图像时，也能够防止图像的纵横比的混乱。 在该图像读取装置中，参考图案的线图案的基准标记和中心标记通过变焦透镜投影在CCD上，并且通过使用对应的像素的地址来检测变焦镜头的实际投影倍率 投影图像。 然后，副扫描速度计算部分计算与检测到的实际投影倍率相对应的副扫描速度并驱动副扫描马达。 因此，与实际的投影放大率相对应的副扫描速度被设定，而不管存在或不存在由于透镜侧的变焦级中的机械误差引起的放大率误差的存在或不存在，从而允许图像精度得到保证。

公开(公告)号：US06108462A

公开(公告)日：2000-08-22

申请号：US985501

申请日：1997-12-05

Applicant: Mikio Aoki ,  Takashi Nitta

Inventor： Mikio Aoki ,  Takashi Nitta

IPC: H04N1/047 ,  H04N1/107 ,  H04N1/193 ,  H04N1/024

CPC classification number: H04N1/047 ,  H04N1/107 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/04787

Abstract: A two-line sensor type image input and processing apparatus and method for accurately determining the current scan state, start of scanning and end of scanning events, as well as estimating scanning speed corresponding thereto, and for performing high precision distortion correction on the basis of these estimated scanning speeds. This image input and processing method or apparatus may comprise 1) overall speed judgment that judges the scanning speed based on feature data from the two sensors; 2) stop state judgment that judges whether or not the image input member is in a scan stop state with the input switch for facilitating image data input in the ON state; 3) pre/post stop state speed judgment that judges the scanning speed before and after the scan stop state based on the scan stop time judged by stop state judgment and the overall scanning speed judged by overall speed judgment; 4) scan start judgment that judges whether or not the image input member started scanning; 5) scan start speed judgment that judges the scanning speed at scan start; 6) scan end judgment that judges whether or not the image input member has ended scanning; 7) scan end speed judgment that judges the scanning speed at scan end; 8) ring buffer write end position updating that uses a ring buffer as the buffer for storing image data and updates the write end address in the ring buffer; and means for correcting images based on speed and start/stop information generated from these various speed judgment devices or processes.

Abstract translation: 一种用于准确地确定当前扫描状态，开始扫描和结束扫描事件的两线传感器型图像输入和处理装置和方法，以及估计与之对应的扫描速度，并且基于以下步骤执行高精度失真校正 这些估计的扫描速度。 该图像输入和处理方法或装置可以包括1）基于来自两个传感器的特征数据来判断扫描速度的总体速度判断; 2）停止状态判断，判断图像输入构件是否处于扫描停止状态，输入开关便于在ON状态下输入图像数据; 3）前/后停止状态速度判定，其基于由停止状态判断判定的扫描停止时间和通过总速度判断判定的整体扫描速度来判定扫描停止状态前后的扫描速度; 4）扫描开始判断，判断图像输入部件是否开始扫描; 5）扫描开始速度判断，判断扫描开始时的扫描速度; 6）判断图像输入部件是否已经结束扫描的扫描结束判断; 7）扫描结束速度判断，判断扫描结束时的扫描速度; 8）环形缓冲器写入结束位置更新，其使用环形缓冲器作为用于存储图像数据的缓冲器，并更新环形缓冲器中的写入结束地址; 以及用于基于从这些各种速度判断装置或处理产生的速度和开始/停止信息来校正图像的装置。

公开(公告)号：US6094512A

公开(公告)日：2000-07-25

申请号：US2512

申请日：1998-01-02

Applicant: Pin Hsu Lin ,  Chien-Hsing Tang ,  Chien-hung Chen

Inventor： Pin Hsu Lin ,  Chien-Hsing Tang ,  Chien-hung Chen

IPC: H04N1/047 ,  H04N1/10 ,  G06K9/22 ,  H04N1/04

CPC classification number: H04N1/047 ,  H04N1/10 ,  H04N2201/04703 ,  H04N2201/04755

Abstract: An image reading apparatus that includes an image scanning module in which an image sensor device is provided. The image reading apparatus includes an upper housing and a pattern located on the bottom surface of the upper housing and positioned at a position x with reference to the edge of the opening. The upper housing has a bottom surface and is provided with an opening for mounting a transparent platen adapted for supporting a document to be scanned. The opening defines an edge. Responsive to detection of the pattern by the image sensor device, the image reading apparatus determines the distance required to move by the scanning module to reach a predetermined positioning line.

Abstract translation: 一种图像读取装置，包括其中设置有图像传感器装置的图像扫描模块。 图像读取装置包括上壳体和位于上壳体的底表面上的图案，并且位于相对于开口边缘的位置x。 上壳体具有底表面并且设置有用于安装适于支撑待扫描文件的透明压板的开口。 开口定义边缘。 响应于通过图像传感器装置检测图案，图像读取装置确定扫描模块移动到达预定定位线所需的距离。

公开(公告)号：US6016207A

公开(公告)日：2000-01-18

申请号：US899804

申请日：1997-07-24

Applicant: Paul Jeffrey Wield

Inventor： Paul Jeffrey Wield

IPC: H04N1/00 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193

CPC classification number: H04N1/00018 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00058 ,  H04N1/00063 ,  H04N1/00082 ,  H04N1/0473 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/04756

Abstract: Two methods of calibrating Fax machines are disclosed. The first method utilizes a pre-printed calibration chart and a computer connected to the Fax machine to be calibrated. The calibration chart is fed into the Fax machine which sends the resultant data to the computer. This data is analyzed by the computer to determine when the Fax machine started to scan the calibration chart. If the scan process did not occur at an optimum point, the computer sends a correction value back to the Fax machine to cause the Fax machine to begin scanning subsequent documents at an optimum point. In the second method, a calibration chart is printed by the Fax machine and then fed back into the machine. A copy of the scanned calibration chart is made to determine at what point the Fax machine began scanning the chart. If the Fax machine did not begin scanning at an optimum point, a user reads the copy and manually enters a corrective offset in to the Fax machine such that subsequent documents are scanned properly.

Abstract translation: 公开了两种校准传真机的方法。 第一种方法使用预打印的校准图表和连接到传真机的计算机进行校准。 校准图表被馈送到传真机，将所得数据发送到计算机。 该数据由计算机分析，以确定传真机何时开始扫描校准图。 如果扫描过程没有发生在最佳点，计算机会将修正值发送回传真机，以使传真机开始扫描最佳点的后续文档。 在第二种方法中，传真机打印校准图，然后反馈回机器。 扫描的校准图表的副本将作出确定传真机开始扫描图表的时间点。 如果传真机没有在最佳点开始扫描，则用户读取副本并手动将修正偏移输入传真机，以便后续文档被正确扫描。

公开(公告)号：US5940531A

公开(公告)日：1999-08-17

申请号：US759364

申请日：1996-11-22

Applicant: Tohru Watanabe ,  Toshio Nakakuki ,  Tatsuya Takahashi

Inventor： Tohru Watanabe ,  Toshio Nakakuki ,  Tatsuya Takahashi

IPC: G06T7/60 ,  G06K9/32 ,  G06T1/00 ,  H04N1/00 ,  H04N1/047 ,  G06K9/00 ,  H04N1/56

CPC classification number: H04N1/047 ,  G06K9/3216 ,  H04N2201/04703

Abstract: Disclosed is an image signal processing apparatus that accurately detect the position of a specific portion of an object to be sensed. The image signal processing apparatus is adapted for an image sensing apparatus having an image sensing device for sensing an image of an object together with a target having a plurality of colors of different hues to produce an image signal. The image signal processing apparatus includes a color difference signal generation circuit, a detection circuit and a determining circuit. A color difference signal generation circuit, connected to the image sensing device, receives the image signal and produces a color difference signal. The detection circuit, connected to the color difference signal generation circuit, receives the color difference signal to detect if the color difference signal lies in a level range previously set in accordance with individual colors, and produces detection signals corresponding to the colors based on a detection result. The determining circuit, connected to the detection circuit, receives the detection signal and determines a position of the target in accordance with the detection signals.

Abstract translation: 公开了一种图像信号处理装置，其精确地检测待感测物体的特定部分的位置。 图像信号处理装置适用于具有用于感测物体的图像的图像感测装置的图像感测装置以及具有多种不同色调的颜色的目标以产生图像信号。 图像信号处理装置包括色差信号发生电路，检测电路和确定电路。 连接到图像感测装置的色差信号产生电路接收图像信号并产生色差信号。 连接到色差信号产生电路的检测电路接收色差信号，以检测色差信号是否处于根据单独的颜色预先设定的电平范围内，并根据检测产生与颜色对应的检测信号 结果。 连接到检测电路的确定电路接收检测信号，并根据检测信号确定目标的位置。

公开(公告)号：US5673126A

公开(公告)日：1997-09-30

申请号：US656605

申请日：1996-05-31

Applicant: Motonobu Ando

Inventor： Motonobu Ando

IPC: G03G21/00 ,  G03G15/00 ,  H04N1/00 ,  H04N1/04 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N1/21 ,  H04N1/40 ,  H04N1/38

CPC classification number: H04N1/00702 ,  H04N1/00681 ,  H04N1/00713 ,  H04N1/00734 ,  H04N1/00753 ,  H04N1/0473 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/04703 ,  H04N2201/04786

Abstract: A distance between an original sensor and an image sensor is determined by counting a number of pulses of a stepping motor driving an original feeder as an original travels between the original sensor and the image sensor. A pair of markings on a white level reference member opposing the image sensor are used to determine the reading range of the image sensor, and further, when the original travelling past the image sensor obscures the markings, the obscuring of the markings is sensed by a controller and used to determine the above-mentioned distance. A starting position for the image sensor to begin sensing an image borne by an original is set by the controller based upon the distance, and the starting position is recorded in an EEPROM such that it can be recalled between uses of the device.

Abstract translation: 原始传感器和图像传感器之间的距离通过对原始传感器和图像传感器之间的原稿行进计数驱动原稿馈送器的步进电机的脉冲数来确定。 使用与图像传感器相对的白色参考构件上的一对标记来确定图像传感器的读取范围，此外，当原稿行进通过图像传感器遮蔽标记时，标记的模糊被 控制器用于确定上述距离。 图像传感器开始感测由原稿所承载的图像的开始位置由控制器基于该距离设置，并且起始位置被记录在EEPROM中，使得其可以在设备的使用之间被调用。

公开(公告)号：US5646746A

公开(公告)日：1997-07-08

申请号：US325572

申请日：1994-10-19

Applicant: Masashi Tazawa ,  Toru Ochiai ,  Toshiya Aikawa ,  Eisaku Maeda ,  Maki Suzuki

Inventor： Masashi Tazawa ,  Toru Ochiai ,  Toshiya Aikawa ,  Eisaku Maeda ,  Maki Suzuki

IPC: H04N1/047 ,  H04N1/10 ,  H04N1/193 ,  H04N1/04

CPC classification number: H04N1/0473 ,  H04N1/1008 ,  H04N1/193 ,  H04N2201/0408 ,  H04N2201/04703

Abstract: An image input device having a movable carriage is provided with an origin detection element that moves out of the path of the document when the document is inserted into the carriage. Because the origin detection element moves out of the path of the document, even long documents, such as, for example, long strips of film containing multiple frames, can be read by the image input device without increasing the size of the carriage or of the image input device. The origin detection element includes a tapered edge that functions as a contrast marker. When the edge is located in the path of the light between the illumination source and the image reading device, the edge can be used to cause the generation of a signal by the image reading device to enable the detection of the point of origin of the carriage in the secondary scanning direction and/or in the focusing direction.

Abstract translation: 具有可移动托架的图像输入装置设置有原稿检测元件，当原稿插入到托架中时，该原点检测元件从文档的路径移出。 由于原点检测元件移出文档的路径，所以即使长的文档，例如包含多个帧的长条带，也可以被图像输入设备读取，而不会增加托架的大小或 图像输入设备 原点检测元件包括用作对比度标记的锥形边缘。 当边缘位于照明源和图像读取装置之间的光的路径中时，边缘可以用于使得图像读取装置产生信号，以便能够检测托架的原点 在二次扫描方向和/或聚焦方向上。