公开(公告)号：US06285464B1

公开(公告)日：2001-09-04

申请号：US07957825

申请日：1992-10-08

申请人： Akihiro Katayama ,  Hidefumi Ohsawa ,  Akiko Fukuhara

发明人： Akihiro Katayama ,  Hidefumi Ohsawa ,  Akiko Fukuhara

IPC分类号： H04N121

CPC分类号： H04N1/4053

摘要： A half-tone image is produced by scanning a plurality of input points of an original, outputting a screened image having a plurality of black and white dots and transmitting signals representing the screened image to a marking device. The size of each plurality of dots is determined from a recursive relationship between a value of a current input point, a previous output and an error representing a difference between a value of a previous input point and the previous output.

摘要翻译： 通过扫描原稿的多个输入点，输出具有多个黑白点的屏蔽图像并将表示屏蔽图像的信号发送到标记装置来产生半色调图像。 根据当前输入点的值，先前输出和表示先前输入点的值与先前输出之间的差异的误差之间的递归关系来确定每个多个点的大小。

公开(公告)号：US5325448A

公开(公告)日：1994-06-28

申请号：US875210

申请日：1992-04-28

申请人： Akihiro Katayama ,  Hidefumi Ohsawa ,  Akiko Fukuhara

发明人： Akihiro Katayama ,  Hidefumi Ohsawa ,  Akiko Fukuhara

IPC分类号： H04N1/405 ,  G06K9/38

CPC分类号： H04N1/4053

摘要： An image treatment apparatus comprising: an input device for inputting image data; a setting circuit serving as a reference when the image data is quantized in accordance with the image data input by the input device; a quantizing circuit for quantizing the image data; and a device for outputting an image in accordance with the result of treatment performed by the quantizing circuit, wherein the quantizing circuit performs the quantization by correcting the error between the image data input by the input device and the image output by the outputting device.

摘要翻译： 一种图像处理装置，包括：输入装置，用于输入图像数据; 当根据由输入装置输入的图像数据量化图像数据时，设置电路作为参考; 用于量化图像数据的量化电路; 以及根据由量化电路执行的处理结果输出图像的装置，其中量化电路通过校正由输入装置输入的图像数据与输出装置输出的图像之间的误差来执行量化。

公开(公告)号：US5808431A

公开(公告)日：1998-09-15

申请号：US651703

申请日：1996-05-21

申请人： Satoru Koyama ,  Akiko Fukuhara

发明人： Satoru Koyama ,  Akiko Fukuhara

IPC分类号： B41J2/47 ,  H02P23/00 ,  B60L13/00

CPC分类号： B41J2/471 ,  H02P23/16

摘要： A motor rotational speed control apparatus is constructed by a control unit for performing an instruction to accelerate a rotational speed of a motor, an instruction to decelerate, or an instruction to maintain a rotational speed, a driving unit for driving the motor in accordance with an instruction outputted from the control unit, and first and second wires for transferring the instruction of the control unit to the driving unit. The control unit shows the instruction by a combination of signal levels of a first signal and a second signal and transmits the first and second signals to the driving unit through the first and second wires, and the driving unit drives the motor in accordance with the combination of the signal levels of the first and second signals.

摘要翻译： 电动机转速控制装置由用于执行用于加速电动机的转速，减速指令或维持转速的指令的指令的控制单元构成，用于驱动电动机的驱动单元根据 从控制单元输出的指令，以及用于将控制单元的指令传送到驱动单元的第一和第二布线。 控制单元通过第一信号和第二信号的信号电平的组合来显示指令，并且通过第一和第二电线将第一和第二信号发送到驱动单元，并且驱动单元根据组合来驱动电动机 的第一和第二信号的信号电平。