公开(公告)号：US20040131253A1

公开(公告)日：2004-07-08

申请号：US10233597

申请日：2002-09-04

Applicant: UMAX DATA SYSTEMS INC.

Inventor： Kuo-Jeng Wang

IPC: G06K009/00

CPC classification number: G06K9/036 ,  G06T7/0006 ,  H04N1/00002 ,  H04N1/00005 ,  H04N1/00013 ,  H04N1/00031 ,  H04N1/00053 ,  H04N1/00068

Abstract: A method for recognizing abnormal image is disclosed. The invention utilizes level comparisons of adjacent image lines to determine if there is any abnormal image amid an image picture and whether the abnormal image belongs to shading or LBB. The method comprises the following steps. First of all, two adjacent image lines having level values Pi and Pinull1 are selected. Then an absolute value of the Pi and the Pinull1 is calculated. Next the absolute value is compared with a value X. When the absolute value is smaller than X, then the image lines are determined as normal. On the contrary, when the absolute value is larger than X, then at least one of the image lines is determined as abnormal. Moreover, another two image lines having level values Pinull1 and Pinull2 separately adjacent the image lines having level values Pi and the Pinull1 are selected. An absolute value of the Pinull1 and the Pinull2 is calculated and the absolute value of the Pinull1 and the Pinull2 is compared to the value X. When the absolute value of the Pinull1 and the Pinull2 is smaller than X, then the image lines having level values Pi and Pinull1 are determined as shading. However, when the absolute value of the Pinull1 and the Pinull2 is larger than X, then the image lines having level values Pi, Pinull1, Pinull1 and Pinull2 are determined as LBB.

Abstract translation: 公开了一种用于识别异常图像的方法。 本发明利用相邻图像行的层次比较来确定图像中是否存在异常图像，以及异常图像是否属于阴影或LBB。 该方法包括以下步骤。 首先，选择具有电平值Pi和Pi-1的两个相邻图像行。 然后计算Pi和Pi-1的绝对值。 接下来将绝对值与值X进行比较。当绝对值小于X时，图像线被正常地确定。 相反，当绝对值大于X时，则至少一个图像行被确定为异常。 此外，选择与具有电平值Pi和Pi-1的图像线分开相邻的具有电平值Pi + 1和Pi-2的另外两条图像线。 计算Pi + 1和Pi-2的绝对值，并将Pi + 1和Pi-2的绝对值与值X进行比较。当Pi + 1和Pi-2的绝对值 小于X，则具有电平值Pi和Pi-1的图像线被确定为阴影。 然而，当Pi + 1和Pi-2的绝对值大于X时，具有电平值Pi，Pi-1，Pi + 1和Pi-2的图像行被确定为LBB。

公开(公告)号：US20030107779A1

公开(公告)日：2003-06-12

申请号：US10011711

申请日：2001-12-11

Applicant: UMAX DATA SYSTEMS INC

Inventor： Chun-Jen Chen ,  Kuo-Jeng Wang

IPC: H04N001/04

CPC classification number: H04N1/00241 ,  H04N1/00236 ,  H04N1/32358 ,  H04N2201/0015 ,  H04N2201/0049 ,  H04N2201/0462

Abstract: In accordance with the present invention, a method and a system for promoting scanning speed are provided. The method comprises steps of determining a transmission rate of a transit interface, adjusting system clock responsive to the transmission rate of the transit interface to change a data generated rate, and scanning an original to generate data at the rate controlled by the system clock. The key aspect of the present invention is by adjusting system clock to change the data generated rate corresponding to the transmission rate of the transit interface. Therefore, in response to the transmission rate of the transit interface, the system clock is adjusted to produce the data at a rate that can reduce the possibility of memory buffer full leading to the reduction in the time wasting on start-stop processes and therefore promote the scanning speed without requiring the increase in size of a memory buffer.

Abstract translation: 根据本发明，提供了一种用于促进扫描速度的方法和系统。 该方法包括以下步骤：确定传输接口的传输速率，响应于传输接口的传输速率调整系统时钟以改变数据产生速率，以及扫描原件以由系统时钟控制的速率生成数据。 本发明的关键方面是通过调整系统时钟来改变与传输接口的传输速率相对应的数据产生速率。 因此，响应于传输接口的传输速率，系统时钟被调整以产生数据，其速率可以降低存储缓冲器的可能性，从而导致在启动停止处理上浪费的时间减少，从而促进 扫描速度，而不需要增加存储器缓冲器的大小。

公开(公告)号：US20030081143A1

公开(公告)日：2003-05-01

申请号：US09985057

申请日：2001-11-01

Applicant: UMAX DATA SYSTEMS INC.

Inventor： Kuo-Jeng Wang

IPC: H04N011/02

CPC classification number: H04N1/00241 ,  H04N1/00236 ,  H04N1/33307 ,  H04N2201/0044 ,  H04N2201/0049 ,  H04N2201/0081 ,  H04N2201/04768 ,  H04N2201/3335

Abstract: In accordance with the present invention, a method and a system for increasing scanning speed are provided. The method comprises steps of determining a transmission rate of a transit interface, scanning an original to generate an image data, and adjusting a cycle time of the image data to change a data generated rate responsive to the transmission rate of the transit interface. The key aspect of the present invention is by adjusting the cycle time of a state machine to change the data generated rate corresponding to the transmission rate of the transit interface. Therefore, in response to the transmission rate of the transit interface, the cycle time of the state machine is adjusted to produce the data at a rate that prevents the smearing process. Thus, incorporated with the present invention, the possibility of memory buffer full is reduced leading to the reduction in the time wasting on start-stop processes and therefore the overall scanning speed is increased without requiring the increase in size of a memory buffer.

Abstract translation: 根据本发明，提供了一种用于增加扫描速度的方法和系统。 该方法包括以下步骤：确定传输接口的传输速率，扫描原件以产生图像数据，以及响应于传输接口的传输速率调整图像数据的周期时间以改变数据生成速率。 本发明的关键方面是通过调整状态机的周期时间来改变与传输接口的传输速率相对应的数据产生速率。 因此，响应于传输接口的传输速率，调整状态机的周期时间以便以防止拖尾处理的速率产生数据。 因此，结合本发明，减少存储器缓冲器的可能性减小，导致在启动 - 停止处理上浪费的时间的减少，因此增加了整体扫描速度，而不需要增加存储缓冲器的大小。

公开(公告)号：US20040017589A1

公开(公告)日：2004-01-29

申请号：US10206198

申请日：2002-07-29

Applicant: UMAX DATA SYSTEMS INC.

Inventor： Kuo-Jeng Wang

IPC: H04N001/40

CPC classification number: H04N1/401

Abstract: A method for selecting a shading correcting line is provided. Scanning a white reference source to obtain several scan lines. Averaging brightness values of pixels from identical columns in the scan lines to obtain a new scan line composed of pixels having median brightness values. Adding one count in shading counting number when an absolute value of a difference of the median brightness values between each pair of adjacent pixels in the new scan line not less than a specification value of shading definition. Selecting the new scan line as a shading correcting line when total shading counting number less than a specification number of shading counts.

Abstract translation: 提供了一种用于选择阴影校正线的方法。 扫描白色参考源以获得多条扫描线。 平均扫描行中相同列的像素的亮度值，以获得由具有中值亮度值的像素组成的新扫描线。 当新扫描行中的每对相邻像素之间的中值亮度值的差的绝对值不小于阴影定义的规格值时，在阴影计数中添加一个计数。 当总阴影计数数小于规定数量的阴影计数时，选择新的扫描线作为阴影校正线。

公开(公告)号：US20030141369A1

公开(公告)日：2003-07-31

申请号：US10054984

申请日：2002-01-25

Applicant: UMAX DATA SYSTEMS INC.

Inventor： Yu-Ru Yu ,  Kuo-Jeng Wang

IPC: G06K007/10

CPC classification number: H04N1/1017 ,  H04N1/107 ,  H04N1/193 ,  H04N2201/0464

Abstract: A scanning apparatus utilizing gravity acceleration for scanning is provided. The scanning apparatus comprises a U-shaped housing, a shaft bearing, a housing and a scanning head. The shaft bearing passes through the housing with two ends thereof respectively and rotationally fastened on two sidewalls of the U-shaped housing, thereby the housing is vertically and rotationally fastened in the U-shaped housing. The scanning head is disposed in the housing with an engageable piece engaged with a hook-type element of the housing so as to fasten the scanning head at a predetermined position close to the top end of the housing. When the scanning head is going to scan, the engagement between the engageable piece and the hook-type element is released and a starting power is applied to the scanning head by gravity acceleration. Thereby the scanning head is guided to move downward to scan via cooperation between a guiding piece and a guiding rail. The scanning speed of the scanning head is determined by the starting power controlled by a predetermined angle contained between the housing and the U-shaped housing.

Abstract translation: 提供利用重力加速扫描的扫描装置。 扫描装置包括U形壳体，轴承座，壳体和扫描头。 轴轴承分别穿过壳体的两端，并旋转地固定在U形壳体的两个侧壁上，从而将壳体垂直并旋转地固定在U形壳体中。 扫描头设置在壳体中，具有与壳体的钩型元件接合的可接合件，以便将扫描头紧固在靠近壳体顶端的预定位置处。 当扫描头要扫描时，可接合件和钩型元件之间的接合被释放，并且通过重力加速将起动力施加到扫描头。 从而扫描头被引导向下移动以通过引导件和导轨之间的协作进行扫描。 扫描头的扫描速度由容纳在壳体和U形壳体之间的预定角度控制的起动功率决定。