-
公开(公告)号：US20220311899A1
公开(公告)日：2022-09-29
申请号：US17653752
申请日：2022-03-07
发明人： Masayoshi Takahashi
摘要： An image signal processing device includes a reference signal generating portion, a determination portion, and an extraction portion. The reference signal generating portion generates and outputs a reference signal that sequentially transmits reference pulses shifted from horizontal synchronization pulses on a horizontal synchronization signal by a predetermined shift time. The determination portion determines whether the horizontal synchronization pulses are normal by comparing time differences between input of the horizontal synchronization pulses and input of the reference pulses with the shift time. The extraction portion extracts line image data points from an image signal in synchronization with the input of the horizontal synchronization pulses that have been determined as normal.
-
2.发明授权公开(公告)号：US09060148B2
公开(公告)日：2015-06-16
申请号：US14525032
申请日：2014-10-27
发明人： Masayoshi Takahashi
CPC分类号： H04N1/4097 , H04N1/0458 , H04N2201/0081 , H04N2201/0094
摘要： An image forming apparatus includes low and high resolution imaging portions, a data generating portion, first and second reading portions, and a reading control portion. The first reading portion acquires, from the high resolution imaging portion, as output data for one pixel, data acquired by n-number of light receiving elements adjacent to each other in a main scanning direction in the high resolution imaging portion. The second reading portion acquires output data from light receiving elements arranged in the main scanning direction from a start position displaced by a distance corresponding to m times a second pitch in the main scanning direction from a first reference position in the high resolution imaging portion, where m is an integer. The reading control portion executes a reading operation for a document by the low and high resolution imaging portions, selecting the first reading portion or selecting both of the reading portions.
摘要翻译： 图像形成装置包括低分辨率和高分辨率成像部分，数据产生部分，第一和第二读取部分以及读取控制部分。 第一读取部分从高分辨率成像部分获取在高分辨率成像部分中的主扫描方向上彼此相邻的n个光接收元件获取的一个像素的输出数据。 第二读取部从从高分辨率成像部的第一基准位置开始偏移与主扫描方向上的m次的第二间距的距离的开始位置，从主扫描方向上的受光元件获取输出数据，其中， m是整数。 读取控制部分通过低和高分辨率成像部分执行文档的读取操作，选择第一读取部分或选择两个读取部分。
-
公开(公告)号：US08854704B2
公开(公告)日：2014-10-07
申请号：US13950007
申请日：2013-07-24
发明人： Masayoshi Takahashi
CPC分类号： H04N1/40068 , H04N1/00827 , H04N1/40056
摘要： An image reading apparatus includes a light source unit, an image sensor, an attenuator, an analog processor and an A/D converter. The attenuator generates a second analog signal by voltage-dividing a first analog signal by two resistors. The analog processor generates a third analog signal by amplifying the second analog signal with a predetermined gain. The A/D converter converts the third analog signal into a digital signal. A voltage-dividing ratio of the attenuator is not higher than a ratio of a maximum value of the amplitude of a signal inputtable to the analog processor to a maximum value of the amplitude of a signal having a possibility of being output from the image sensor.
摘要翻译： 图像读取装置包括光源单元，图像传感器，衰减器，模拟处理器和A / D转换器。 衰减器通过将第一模拟信号分压为两个电阻器来产生第二模拟信号。 模拟处理器通过以预定增益放大第二模拟信号来产生第三模拟信号。 A / D转换器将第三模拟信号转换为数字信号。 衰减器的分压比不高于可输入到模拟处理器的信号的幅度的最大值与可以从图像传感器输出的信号的振幅的最大值的比值。
-
公开(公告)号：US11277534B2
公开(公告)日：2022-03-15
申请号：US16323891
申请日：2018-06-13
发明人： Masayoshi Takahashi
摘要： An image reading apparatus includes a reading controller, a data generating circuit unit, a document holder, an opening/closing sensor which provides an output of a first level when the document holder is open by an angle equal to or more than a predetermined angle, and a storage unit which stores an adjustment value. Where a return is made from a power saving mode to an active mode, when an output level of the opening/closing sensor is the first level, the reading controller makes a setting for an operation of the data generating circuit unit based on the adjustment value stored in the storage unit, and then makes the reading unit perform reading for document size detection.
-
公开(公告)号：US20140029068A1
公开(公告)日：2014-01-30
申请号：US13950007
申请日：2013-07-24
发明人： Masayoshi Takahashi
IPC分类号： H04N1/40
CPC分类号： H04N1/40068 , H04N1/00827 , H04N1/40056
摘要： An image reading apparatus includes a light source unit, an image sensor, an attenuator, an analog processor and an A/D converter. The attenuator generates a second analog signal by voltage-dividing a first analog signal by two resistors. The analog processor generates a third analog signal by amplifying the second analog signal with a predetermined gain. The A/D converter converts the third analog signal into a digital signal. A voltage-dividing ratio of the attenuator is not higher than a ratio of a maximum value of the amplitude of a signal inputtable to the analog processor to a maximum value of the amplitude of a signal having a possibility of being output from the image sensor.
摘要翻译： 图像读取装置包括光源单元，图像传感器，衰减器，模拟处理器和A / D转换器。 衰减器通过将第一模拟信号分压为两个电阻器来产生第二模拟信号。 模拟处理器通过以预定增益放大第二模拟信号来产生第三模拟信号。 A / D转换器将第三模拟信号转换为数字信号。 衰减器的分压比不高于可输入到模拟处理器的信号的幅度的最大值与可以从图像传感器输出的信号的振幅的最大值的比值。
-
公开(公告)号：US10389918B2
公开(公告)日：2019-08-20
申请号：US15887992
申请日：2018-02-03
发明人： Masayoshi Takahashi
摘要： A document reading unit includes an R light source, a G light source, a B light source, a UV light source, a lighting control unit, a first photoelectric conversion element, a second photoelectric conversion element, a lens, and an output unit. The first photoelectric conversion element includes an M filter. The second photoelectric conversion element includes a G filter. The output unit outputs outputs of the first photoelectric conversion element and the second photoelectric conversion element at the time of simultaneous lighting of the R and G light sources and an output of the first photoelectric conversion element at the time of simultaneous lighting of the B and UV light sources as the image data, and outputs an output of the second photoelectric conversion element at the time of simultaneous lighting of the B and UV light source as fluorescent color data indicating a fluorescent color region.
-
7.发明授权公开(公告)号：US09197787B2
公开(公告)日：2015-11-24
申请号：US14527643
申请日：2014-10-29
发明人： Masayoshi Takahashi
CPC分类号： H04N1/484 , H04N1/02815 , H04N1/10 , H04N1/401 , H04N2201/0081 , H04N2201/0094
摘要： An image reading device includes a light source, a photoelectric conversion portion, a first radiation control portion, and a first image generating portion. The light source radiates lights of R (red), G (green), and B (blue). The photoelectric conversion portion receives light reflected from a document and outputs an electric signal corresponding to a light reception amount. The first radiation control portion sequentially radiates two color lights of G and R or B from the light source to each line along a main scanning direction on the document while alternately switching the lights of R and B on a line-by-line basis. The first image generating portion generates color image data for one line, based on at least three electric signals corresponding to lights of R, G, and B among the electric signals corresponding to respective color lights radiated to at least adjacent two lines by the first radiation control portion.
摘要翻译： 图像读取装置包括光源，光电转换部，第一辐射控制部和第一图像生成部。 光源照射R（红色），G（绿色）和B（蓝色）的光。 光电转换部接收从原稿反射的光，并输出与光接收量对应的电信号。 第一辐射控制部分依次沿着文档沿着主扫描方向将来自光源的G和R或B的两个色光顺序地辐射出来，同时交替地以逐行方式切换R和B的光。 第一图像产生部分基于对应于通过第一辐射辐射到至少相邻两条线路的各个颜色的光的信号中的至少三个电信号，对应于R，G和B的光的至少三个电信号，生成一行的彩色图像数据 控制部分。
-
8.发明申请公开(公告)号：US20150116790A1
公开(公告)日：2015-04-30
申请号：US14525032
申请日：2014-10-27
发明人： Masayoshi Takahashi
CPC分类号： H04N1/4097 , H04N1/0458 , H04N2201/0081 , H04N2201/0094
摘要： An image forming apparatus includes low and high resolution imaging portions, a data generating portion, first and second reading portions, and a reading control portion. The first reading portion acquires, from the high resolution imaging portion, as output data for one pixel, data acquired by n-number of light receiving elements adjacent to each other in a main scanning direction in the high resolution imaging portion. The second reading portion acquires output data from light receiving elements arranged in the main scanning direction from a start position displaced by a distance corresponding to m times a second pitch in the main scanning direction from a first reference position in the high resolution imaging portion, where m is an integer. The reading control portion executes a reading operation for a document by the low and high resolution imaging portions, selecting the first reading portion or selecting both of the reading portions.
摘要翻译： 图像形成装置包括低分辨率和高分辨率成像部分，数据产生部分，第一和第二读取部分以及读取控制部分。 第一读取部分从高分辨率成像部分获取在高分辨率成像部分中的主扫描方向上彼此相邻的n个光接收元件获取的一个像素的输出数据。 第二读取部从从高分辨率成像部的第一基准位置开始偏移与主扫描方向上的m次的第二间距的距离的开始位置，从主扫描方向上的受光元件获取输出数据，其中， m是整数。 读取控制部分通过低和高分辨率成像部分执行文档的读取操作，选择第一读取部分或选择两个读取部分。
-
公开(公告)号：US12010279B2
公开(公告)日：2024-06-11
申请号：US18209824
申请日：2023-06-14
发明人： Risa Fukuuchi , Masayoshi Takahashi , Takuro Murata , Masahiro Nakao , Taro Kurahashi , Shunsuke Sasaki
IPC分类号： H04N1/00
CPC分类号： H04N1/00602 , H04N1/0071 , H04N1/00713 , H04N1/00777
摘要： An image reading device includes a document tray, a linear conveyance path, a curved conveyance path, a document conveyance device, a scanning device, a length detecting device, an operation device, and a controller. A plurality of conveyance rollers are disposed at a predetermined first interval in the linear conveyance path. In the curved conveyance path, a plurality of conveyance rollers are disposed at a predetermined second interval longer than the first interval. When accepting through the operation device an instruction for conveying an original document through the curved conveyance path, the controller allows conveyance of the original document through the curved conveyance path when a length of the original document detected by the length detecting device is not shorter than the second interval or disallows conveyance of the original document through the curved conveyance path when the detected length of the original document is shorter than the second interval.
-
公开(公告)号：US11595540B2
公开(公告)日：2023-02-28
申请号：US17653752
申请日：2022-03-07
发明人： Masayoshi Takahashi
摘要： An image signal processing device includes a reference signal generating portion, a determination portion, and an extraction portion. The reference signal generating portion generates and outputs a reference signal that sequentially transmits reference pulses shifted from horizontal synchronization pulses on a horizontal synchronization signal by a predetermined shift time. The determination portion determines whether the horizontal synchronization pulses are normal by comparing time differences between input of the horizontal synchronization pulses and input of the reference pulses with the shift time. The extraction portion extracts line image data points from an image signal in synchronization with the input of the horizontal synchronization pulses that have been determined as normal.
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.013 秒)
