公开(公告)号：USRE42033E1

公开(公告)日：2011-01-18

申请号：US11208129

申请日：2005-08-19

Applicant: Rong-Ji Liu ,  Kuo-Jeng Wang ,  Tom-Chin Chang

Inventor： Rong-Ji Liu ,  Kuo-Jeng Wang ,  Tom-Chin Chang

IPC: H01J3/14

CPC classification number: H04N1/486

Abstract: A single step multi-section exposure scanning method for a scanner. The scanner includes a photo-sensor and a stepper motor. The photo-sensor has N rows of sensor cells that correspond to each primary color. The scanning device is driven forward an exposure distance for each revolution of the stepper motor. The single step multi-section exposure scanning method includes the following steps. First, the photo-sensor moves forward one exposure distance. One row of sensor cells is exposed after moving every 1/Nth of the exposure distance. Thereafter, analogue voltages obtained through the exposed row of sensor cells are transmitted to an analogue/digital converter. The above process is repeated until the entire document is scanned.

Abstract translation: 用于扫描仪的单步多段曝光扫描方法。 扫描仪包括光电传感器和步进电机。 光电传感器具有N行与每个基色对应的传感器单元。 扫描装置向前驱动步进电机每转一圈的曝光距离。 单步多段曝光扫描方法包括以下步骤。 首先，光电传感器向前移动一个曝光距离。 在移动每隔1 / N的曝光距离后，一行传感器单元就被曝光。 此后，通过暴露的传感器单元行获得的模拟电压被传送到模拟/数字转换器。 重复上述过程，直到扫描整个文档。

公开(公告)号：US20090015880A1

公开(公告)日：2009-01-15

申请号：US11513836

申请日：2006-08-30

Applicant: Rong-Ji Liu

Inventor： Rong-Ji Liu

IPC: H04N1/04

CPC classification number: H04N1/02409 ,  H04N1/03 ,  H04N1/1017 ,  H04N1/193 ,  H04N2201/0416 ,  H04N2201/0434

Abstract: A method of optimal focusing for a document scanner is disclosed. The scanner includes an optic module movable in a given scanning direction to perform scanning operation over an area of a document in a scan line by scan line manner by being driven by an optic module moving mechanism under control of a control unit. The control unit includes a best focus value memory for storage of the best focus value for each scan line. The method includes the steps of moving the optic module to one of scan lines of the document and retrieving the best focus value corresponding to the selected scan line. An focus adjusting mechanism is controlled by the control unit to move the optic module in a second direction to adjust the focus position of the optic module in accordance with the best focus value of the scan line. Once the optic module reaches the scan line, the operation of the optic module is temporarily suspended in order to have the vibration of the optic module damped out. Thereafter, a scanning operation is performed over the scan line.

Abstract translation: 公开了一种用于文件扫描器的最佳聚焦方法。 扫描器包括可沿给定的扫描方向移动的光学模块，通过在控制单元的控制下被光学模块移动机构驱动，通过扫描线方式在扫描线上的文档区域上执行扫描操作。 控制单元包括用于存储每个扫描线的最佳聚焦值的最佳聚焦值存储器。 该方法包括以下步骤：将光学模块移动到文档的扫描线之一并检索对应于所选择的扫描线的最佳对焦值。 控制单元控制焦点调节机构以沿第二方向移动光学模块，以根据扫描线的最佳聚焦值来调整光学模块的聚焦位置。 一旦光模块到达扫描线，光模块的操作暂时停止，以使光模块的振动被阻挡。 此后，在扫描线上执行扫描操作。

公开(公告)号：US07206093B2

公开(公告)日：2007-04-17

申请号：US09925002

申请日：2001-08-08

Applicant: Tom-Chin Chang ,  Kuo-Jeng Wang ,  Rong-Ji Liu

Inventor： Tom-Chin Chang ,  Kuo-Jeng Wang ,  Rong-Ji Liu

IPC: G06F15/00 ,  H04N1/04 ,  H04N1/32 ,  G06K9/40

CPC classification number: H04N1/40068 ,  H04N1/04 ,  H04N1/32 ,  H04N1/401

Abstract: A method of reducing memory requirement in the compensation memory unit of a scanner. The method includes providing an even compensation data value and an odd compensation data value and averaging the two to produce an odd-even compensation data value. Only half as much memory space is required to hold the averaged odd-even compensation data values.

Abstract translation: 一种减少扫描仪的补偿存储器单元中的存储器需求的方法。 该方法包括提供均匀补偿数据值和奇数补偿数据值，并对两者进行平均以产生奇偶校正数据值。 只需要一半的存储空间来保持平均的奇偶补偿数据值。