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1. 发明申请

US20060001921A1 System and method for high-performance scanner calibration 审中-公开
标题翻译：用于高性能扫描仪校准的系统和方法
公开(公告)号：US20060001921A1
公开(公告)日：2006-01-05
申请号：US10883427
申请日：2004-06-30
申请人： James Bailey , Curt Breswick , David Crutchfield , Joseph Yackzan
发明人： James Bailey , Curt Breswick , David Crutchfield , Joseph Yackzan
IPC分类号： H04N1/46
CPC分类号： H04N1/401 , H04N5/361 , H04N5/3651
摘要： The present invention is directed to a system and method for reducing the memory requirement for offset and gain calibration to relieve the size/performance bottleneck in scanner systems. The resulting methodology produces visually equivalent scanned results with a substantial increase in performance, which results in a shorter amount of time required to output a first copy in, for example, an all-in-one device. Since the calibration step is often the bottleneck in scanner performance, this method noticeably speeds up scan and copy time. Implementing the decompression in hardware requires a minimal amount of hardware overhead and complexity. Thus, this method has a minimal impact on the size and cost of the scanner controller (e.g., an ASIC—application specific integrated circuit). Since compression only takes place at most once per scan, this added step has no significant impact on the overall scan time. By allowing dynamic grouping of pixels using a single calibration packet, the quality of the compensation can be optimized with the size of the compensation data being minimized. Adding the ability to shift the compressed deviation stored in the calibration packet, the range of the pixel-to-pixel deviation can be increased without impacting the size of the calibration data. This flexibility makes this invention applicable to future image sensors that may have widely varying deviations in pixel-to-pixel offset and gain values.
摘要翻译：本发明涉及用于减少偏移和增益校准的存储器需求以减轻扫描器系统中的尺寸/性能瓶颈的系统和方法。所得到的方法产生视觉上等效的扫描结果，性能显着增加，这导致在例如一体式设备中输出第一副本所需的更短的时间量。由于校准步骤通常是扫描仪性能的瓶颈，因此该方法显着加快了扫描和复制时间。在硬件中实现解压缩需要最少的硬件开销和复杂性。因此，该方法对扫描仪控制器（例如，ASIC专用集成电路）的尺寸和成本具有最小的影响。由于每次扫描最多只能进行一次压缩，因此添加的步骤对整个扫描时间没有显着影响。通过允许使用单个校准分组对像素进行动态分组，可以使补偿数据的大小最小化来优化补偿的质量。增加移动存储在校准包中的压缩偏差的能力，可以增加像素到像素偏差的范围而不影响校准数据的大小。这种灵活性使得本发明适用于未来可能在像素到像素偏移和增益值中具有广泛变化的偏差的图像传感器。

2. 发明申请

US20050152007A1 Scanner and method for scanning an image or images 审中-公开
标题翻译：用于扫描图像或图像的扫描仪和方法
公开(公告)号：US20050152007A1
公开(公告)日：2005-07-14
申请号：US10754125
申请日：2004-01-09
申请人： Stephen Cunnagin , Curt Breswick , Ronald Garnett , David Murray
发明人： Stephen Cunnagin , Curt Breswick , Ronald Garnett , David Murray
IPC分类号： G06K9/00 , H04N1/10 , H04N1/193
CPC分类号： H04N1/1017 , H04N1/00045 , H04N1/00087 , H04N1/193 , H04N2201/02425 , H04N2201/0416 , H04N2201/044 , H04N2201/04755 , H04N2201/04791
摘要： A scanner includes a scan bar, a first scan-bar homing reference, a second scan-bar homing reference and an image placement area. The scan bar is movable along a subscan axis. The second scan-bar homing reference is spaced apart along the subscan axis from the first scan-bar homing reference. The image placement area is located between the first and second scan-bar homing references. A broad method uses the scanner. One step includes performing a prescan or an image scan of an image by moving the scan bar along the subscan axis from the first scan-bar homing reference in relation to the image. Another step includes performing a prescan or an image scan of the image or of an additional image by moving the scan bar along the subscan axis from the second scan-bar homing reference in relation to the image or the additional image.
摘要翻译：扫描仪包括扫描条，第一扫描条归位引用，第二扫描条归位引用和图像放置区。扫描条可沿副扫描轴移动。第二扫描棒归位参考沿着副扫描轴与第一扫描棒归位基准间隔开。图像放置区域位于第一和第二扫描杆归位引用之间。广泛的方法使用扫描仪。一步包括通过相对于图像从第一扫描棒归位参考沿着副扫描轴移动扫描条来执行图像的预扫描或图像扫描。另一步骤包括通过相对于图像或附加图像从第二扫描棒归位引用沿着副扫描轴移动扫描条来执行图像或附加图像的预扫描或图像扫描。

3. 发明申请

US20050254706A1 Method of an image processor for transforming a n-bit data packet to a m-bit data packet using a lookup table 有权
标题翻译：用于使用查找表将n比特数据分组变换为m比特数据分组的图像处理器的方法
公开(公告)号：US20050254706A1
公开(公告)日：2005-11-17
申请号：US10844787
申请日：2004-05-13
申请人： James Bailey , Curt Breswick , David Crutchfield , Thomas Eade , Zachary Fister
发明人： James Bailey , Curt Breswick , David Crutchfield , Thomas Eade , Zachary Fister
IPC分类号： G06K9/00 , G06K9/36 , G06K9/46 , H04N1/60
CPC分类号： H04N1/60
摘要： A method of transforming a n-bit data packet to a m-bit data packet with a lookup table. The lookup table includes at least one entry data packet and at least one respective delta value associated with each entry data packet. The method includes the acts of receiving an input data packet having n-bits, indexing the lookup table with at least a portion of the input data packet to obtain one of the at least one entry data packet, and decompressing the obtained entry data packet with the at least one respective delta value associated with the obtained entry data packet, thereby resulting in an output data packet having m-bits. The decompressing act includes using a portion of the input data packet to determine the number of delta values called for decompressing the obtained entry data packet. The method can be used in, for example, an image processor.
摘要翻译：一种利用查找表将n比特数据分组转换为m比特数据分组的方法。查找表包括与每个条目数据分组相关联的至少一个条目数据分组和至少一个相应的增值值。该方法包括接收具有n位的输入数据分组的动作，用至少一部分输入数据分组索引查找表，以获得至少一个输入数据分组中的一个，并将所获得的输入数据分组解压缩，所述至少一个相应的增量值与所获得的条目数据分组相关联，从而导致具有m比特的输出数据分组。解压缩动作包括使用输入数据分组的一部分来确定被称为解压缩所获得的条目数据分组的增量值的数量。该方法可以用于例如图像处理器。

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