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公开(公告)号：EP0831639A3
公开(公告)日：1999-07-07
申请号：EP97307406.5
申请日：1997-09-23
IPC分类号： H04N1/48
CPC分类号： H04N1/1911 , H04N1/12 , H04N1/40056 , H04N1/484 , H04N2201/0414
摘要： Scan exposure in a row or swath scanner is controlled by pulsing light sources with pulses (R, G, B) that are separated by dark intervals (441) from each other - and from the detector readout periods (RD). Detector sequencing is thereby made independent of the velocity of the pixel-line advance mechanism (401-403; 131, 133). Different pulse widths (412, 412') for different colors provide color correction without calculation, or regularize colorspace conversion calculations (128) where needed. In a swath scanner, known technology of printing modes is imported into the scanning context. Order of pixel columns within each swath can be reversed (251) for printing - permitting use of novel configurations such as a dual-parallel-flatbed copier (Figs. 13, 14) in which a single common scan-and-advance mechanism (211, 231-244') simultaneously transports the scan sensor (214) and printheads (212, 213). To produce mirror images, this configuration is also used without column reversal. In addition to red, green and blue light sources, an infrared source is used for reading invisible indicia that identify forms or media types. The scan sensor (214) is also used (214') for auxiliary printing functions.
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公开(公告)号：EP1349365A2
公开(公告)日：2003-10-01
申请号：EP03010266.9
申请日：1997-09-23
IPC分类号： H04N1/191
CPC分类号： H04N1/1911 , H04N1/12 , H04N1/40056 , H04N1/484 , H04N2201/0414
摘要： Scan exposure in a row or swath scanner is controlled by pulsing light sources with pulses (R, G, B) that are separated by dark intervals (441) from each other ― and from the detector readout periods (RD). Detector sequencing is thereby made independent of the velocity of the pixel-line advance mechanism (401-403; 131, 133). Different pulse widths (412, 412') for different colors provide color correction without calculation, or regularize colorspace conversion calculations (128) where needed. In a swath scanner, known technology of printing modes is imported into the scanning context. Order of pixel columns within each swath can be reversed (251) for printing ― permitting use of novel configurations such as a dual-parallel-flatbed copier (Figs. 13, 14) in which a single common scan-and-advance mechanism (211, 231-244') simultaneously transports the scan sensor (214) and printheads (212, 213). To produce mirror images, this configuration is also used without column reversal. In addition to red, green and blue light sources, an infrared source is used for reading invisible indicia that identify forms or media types. The scan sensor (214) is also used (214') for auxiliary printing functions.
摘要翻译： 以脉冲（R，G，B）的脉冲光源相互间隔暗区间（441）和探测器读出周期（RD）来控制扫描仪中的扫描曝光。 因此，检测器排序与像素行前进机构（401-403; 131,133）的速度无关。 用于不同颜色的不同脉冲宽度（412,412'）在不需要计算的情况下提供颜色校正，或者在需要时进行颜色空间转换计算（128）的正则化。 在扫描仪中，将已知的打印模式技术导入到扫描上下文中。 每个条带中的像素列的顺序可以颠倒（251）进行打印 - 允许使用新颖的配置，例如双平行平板复印机（图13,14），其中单个共同的扫描和提前机制（211 ，231-244'）同时传送扫描传感器（214）和打印头（212,213）。 为了产生镜像，这种配置也可以在没有柱反转的情况下使用。 除了红色，绿色和蓝色光源外，红外光源用于读取识别形式或介质类型的不可见标记。 扫描传感器（214）也用于辅助打印功能（214'）。
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公开(公告)号：EP1349365A3
公开(公告)日：2004-01-21
申请号：EP03010266.9
申请日：1997-09-23
IPC分类号： H04N1/191
CPC分类号： H04N1/1911 , H04N1/12 , H04N1/40056 , H04N1/484 , H04N2201/0414
摘要： Scan exposure in a row or swath scanner is controlled by pulsing light sources with pulses (R, G, B) that are separated by dark intervals (441) from each other ― and from the detector readout periods (RD). Detector sequencing is thereby made independent of the velocity of the pixel-line advance mechanism (401-403; 131, 133). Different pulse widths (412, 412') for different colors provide color correction without calculation, or regularize colorspace conversion calculations (128) where needed. In a swath scanner, known technology of printing modes is imported into the scanning context. Order of pixel columns within each swath can be reversed (251) for printing ― permitting use of novel configurations such as a dual-parallel-flatbed copier (Figs. 13, 14) in which a single common scan-and-advance mechanism (211, 231-244') simultaneously transports the scan sensor (214) and printheads (212, 213). To produce mirror images, this configuration is also used without column reversal. In addition to red, green and blue light sources, an infrared source is used for reading invisible indicia that identify forms or media types. The scan sensor (214) is also used (214') for auxiliary printing functions.
摘要翻译： 连续扫描曝光或条纹扫描仪由脉冲（R，G，B）光源脉冲控制，脉冲（R，G，B）彼此隔开一段黑暗间隔（441），并与探测器读出周期（RD）分开。 由此使得检测器排序与像素线前进机构（401-403; 131,133）的速度无关。 对于不同颜色的不同脉冲宽度（412,412'）提供颜色校正而无需计算，或者在需要的地方对颜色空间转换计算（128）进行规则化。 在扫描区扫描仪中，将已知的打印模式技术导入到扫描环境中。 在每个条带内的像素列的顺序可以被颠倒（251）用于打印 - 允许使用诸如双平行平板复印机（图13,14）的新颖配置，其中单个公共扫描和前进机构（211 ，231-244'）同时传送扫描传感器（214）和打印头（212,213）。 为了产生镜像，这种配置也可以在没有列反转的情况下使用。 除了红色，绿色和蓝色光源之外，还使用红外线源读取识别表格或媒体类型的隐形标记。 扫描传感器（214）也用于辅助打印功能（214'）。
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公开(公告)号：EP1292103A2
公开(公告)日：2003-03-12
申请号：EP02028254.7
申请日：1997-09-23
IPC分类号： H04N1/191
CPC分类号： H04N1/1911 , H04N1/12 , H04N1/40056 , H04N1/484 , H04N2201/0414
摘要： Scan exposure in a row or swath scanner is controlled by pulsing light sources with pulses (R, G, B) that are separated by dark intervals (441) from each other ― and from the detector readout periods (RD). Detector sequencing is thereby made independent of the velocity of the pixel-line advance mechanism (401-403; 131, 133). Different pulse widths (412, 412') for different colors provide color correction without calculation, or regularize colorspace conversion calculations (128) where needed. In a swath scanner, known technology of printing modes is imported into the scanning context. Order of pixel columns within each swath can be reversed (251) for printing ― permitting use of novel configurations such as a dual-parallel-flatbed copier (Figs. 13, 14) in which a single common scan-and-advance mechanism (211, 231-244') simultaneously transports the scan sensor (214) and printheads (212, 213). To produce mirror images, this configuration is also used without column reversal. In addition to red, green and blue light sources, an infrared source is used for reading invisible indicia that identify forms or media types. The scan sensor (214) is also used (214') for auxiliary printing functions.
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5.发明授权Reducing artefacts by pixel data weighting in overlap areas of adjacent partial image scans 有权减少由像素加权伪像在相邻Teilbildabtastbereiche的重叠区
公开(公告)号：EP0901273B1
公开(公告)日：2002-12-11
申请号：EP98306504.6
申请日：1998-08-14
IPC分类号： H04N1/191
CPC分类号： H04N1/128 , H04N1/1911 , H04N1/1915 , H04N2201/0414
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公开(公告)号：EP0831639A2
公开(公告)日：1998-03-25
申请号：EP97307406.5
申请日：1997-09-23
IPC分类号： H04N1/48
CPC分类号： H04N1/1911 , H04N1/12 , H04N1/40056 , H04N1/484 , H04N2201/0414
摘要： Scan exposure in a row or swath scanner is controlled by pulsing light sources with pulses (R, G, B) that are separated by dark intervals (441) from each other - and from the detector readout periods (RD). Detector sequencing is thereby made independent of the velocity of the pixel-line advance mechanism (401-403; 131, 133). Different pulse widths (412, 412') for different colors provide color correction without calculation, or regularize colorspace conversion calculations (128) where needed. In a swath scanner, known technology of printing modes is imported into the scanning context. Order of pixel columns within each swath can be reversed (251) for printing - permitting use of novel configurations such as a dual-parallel-flatbed copier (Figs. 13, 14) in which a single common scan-and-advance mechanism (211, 231-244') simultaneously transports the scan sensor (214) and printheads (212, 213). To produce mirror images, this configuration is also used without column reversal. In addition to red, green and blue light sources, an infrared source is used for reading invisible indicia that identify forms or media types. The scan sensor (214) is also used (214') for auxiliary printing functions.
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公开(公告)号：EP0831639B1
公开(公告)日：2008-02-13
申请号：EP97307406.5
申请日：1997-09-23
CPC分类号： H04N1/1911 , H04N1/12 , H04N1/40056 , H04N1/484 , H04N2201/0414
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公开(公告)号：EP1292103A3
公开(公告)日：2004-01-21
申请号：EP02028254.7
申请日：1997-09-23
CPC分类号： H04N1/1911 , H04N1/12 , H04N1/40056 , H04N1/484 , H04N2201/0414
摘要： Scan exposure in a row or swath scanner is controlled by pulsing light sources with pulses (R, G, B) that are separated by dark intervals (441) from each other ― and from the detector readout periods (RD). Detector sequencing is thereby made independent of the velocity of the pixel-line advance mechanism (401-403; 131, 133). Different pulse widths (412, 412') for different colors provide color correction without calculation, or regularize colorspace conversion calculations (128) where needed. In a swath scanner, known technology of printing modes is imported into the scanning context. Order of pixel columns within each swath can be reversed (251) for printing ― permitting use of novel configurations such as a dual-parallel-flatbed copier (Figs. 13, 14) in which a single common scan-and-advance mechanism (211, 231-244') simultaneously transports the scan sensor (214) and printheads (212, 213). To produce mirror images, this configuration is also used without column reversal. In addition to red, green and blue light sources, an infrared source is used for reading invisible indicia that identify forms or media types. The scan sensor (214) is also used (214') for auxiliary printing functions.
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公开(公告)号：EP0901273A3
公开(公告)日：2000-03-15
申请号：EP98306504.6
申请日：1998-08-14
IPC分类号： H04N1/191
CPC分类号： H04N1/128 , H04N1/1911 , H04N1/1915 , H04N2201/0414
摘要： A computerised methodology for reducing swath scanner swath boundary discontinuities is provided by using a predetermined overlap of pixel row during each sequential scan. Pixel data from a first scan (400-401) of the overlapped pixel rows is compared to the pixel data from a second scan (405, 409, 411, 415, 417) of the overlapped pixel rows, identical pixels of the overlapped pixel rows ideally having the same representative scan data. Errors are compensated by weighting representative scan data for each pixel row, linearly decreasing the weighting in proportion to the proximity to the swath boundary (413). Weighted data is substituted for true data depending upon comparison factors (403, 407). In one embodiment, the weighting factor is an increase or decrease in the first scan data relative to the percentage change in white level intensity captured in the second scan of the overlapped pixel rows. In another embodiment, the weighting factor is a linear shifting of the proportion of the pixel data from the first scan and the pixel data from the second scan of the overlapped pixel rows used as the scanned image data such that the proportion of the first scan decreases as the proportion of the second scan increases, thereby smoothing differentials in data representative of individual pixel rows at swath boundaries. In another embodiment, scanner signal-to-noise ratio is improved by using a weighting factor in accordance with the Central Limit Theorem.
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公开(公告)号：EP0901273A2
公开(公告)日：1999-03-10
申请号：EP98306504.6
申请日：1998-08-14
IPC分类号： H04N1/191
CPC分类号： H04N1/128 , H04N1/1911 , H04N1/1915 , H04N2201/0414
摘要： A computerised methodology for reducing swath scanner swath boundary discontinuities is provided by using a predetermined overlap of pixel row during each sequential scan. Pixel data from a first scan (400-401) of the overlapped pixel rows is compared to the pixel data from a second scan (405, 409, 411, 415, 417) of the overlapped pixel rows, identical pixels of the overlapped pixel rows ideally having the same representative scan data. Errors are compensated by weighting representative scan data for each pixel row, linearly decreasing the weighting in proportion to the proximity to the swath boundary (413). Weighted data is substituted for true data depending upon comparison factors (403, 407). In one embodiment, the weighting factor is an increase or decrease in the first scan data relative to the percentage change in white level intensity captured in the second scan of the overlapped pixel rows. In another embodiment, the weighting factor is a linear shifting of the proportion of the pixel data from the first scan and the pixel data from the second scan of the overlapped pixel rows used as the scanned image data such that the proportion of the first scan decreases as the proportion of the second scan increases, thereby smoothing differentials in data representative of individual pixel rows at swath boundaries. In another embodiment, scanner signal-to-noise ratio is improved by using a weighting factor in accordance with the Central Limit Theorem.
摘要翻译： 通过在每个顺序扫描期间使用像素行的预定重叠来提供用于减少条扫描器条带边界不连续性的计算机化方法。 将来自重叠像素行的第一扫描（400-401）的像素数据与重叠像素行的第二扫描（405,409,411,415,417）的像素数据进行比较，重叠像素行的相同像素 理想地具有相同的代表扫描数据。 通过对每个像素行加权代表性扫描数据来补偿错误，与权重边界的接近度成比例地线性减小权重（413）。 加权数据取决于比较因子（403,407）的真实数据。 在一个实施例中，加权因子是相对于在重叠像素行的第二次扫描中捕获的白电平强度的百分比变化的第一扫描数据的增加或减少。 在另一实施例中，加权因子是来自第一扫描的像素数据的比例和用作扫描图像数据的重叠像素行的第二次扫描的像素数据的线性移位，使得第一扫描的比例减小 随着第二次扫描的比例增加，从而平滑差分在代表各个像素行的条纹边界的数据。 在另一个实施例中，通过使用根据中心极限定理的加权因子来提高扫描器信噪比。
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