公开(公告)号：US08363278B2

公开(公告)日：2013-01-29

申请号：US11918077

申请日：2006-03-31

申请人： Zhihong Liu ,  Feng Chen ,  Bin Yang

发明人： Zhihong Liu ,  Feng Chen ,  Bin Yang

IPC分类号： G06K15/00 ,  G06K9/00 ,  G03G13/04

CPC分类号： H04N1/4052

摘要： The present invention relates to a method and apparatus capable of generating frequency-modulation halftone dots in high speed and belongs to the field of the digital image halftone. In the prior art, read-write operation is usually carried out many times in error rows during processing each pixel so that halftone dots are generated in low speed. In the method according to the present invention, the error generated by the current pixel is buffered in a register file and the final accumulated error values are written in the error rows only after all of the relative pixels are processed. Thus, read-write operation is carried out only once in the error rows for processing each pixel. The present invention also provides an apparatus to implement the method. The apparatus comprises an error row memory, an error buffer register file, a gray generation circuit, a threshold comparison circuit, an error generation circuit, an error buffer register file control circuit, and an error row control circuit. The method and apparatus according to the present invention decrease the steps in operation and improve the speed for generating the frequency-modulation halftone dots.

摘要翻译： 本发明涉及能够高速产生调频半色调点的属于数字图像半色调的领域的方法和装置。 在现有技术中，在处理每个像素期间，读写操作通常在错误行中进行多次，使得半色调点以低速生成。 在根据本发明的方法中，由当前像素产生的误差被缓存在寄存器文件中，并且只有在处理了所有相对像素之后才将最终的累积误差值写入误差行。 因此，在用于处理每个像素的错误行中仅执行一次读写操作。 本发明还提供了一种实现该方法的装置。 该装置包括错误行存储器，错误缓冲寄存器文件，灰色生成电路，阈值比较电路，错误产生电路，错误缓冲寄存器文件控制电路和错误行控制电路。 根据本发明的方法和装置降低了操作步骤，提高了生成调频半色调点的速度。

公开(公告)号：US20090051972A1

公开(公告)日：2009-02-26

申请号：US11918077

申请日：2006-03-31

申请人： Zhihong Liu ,  Feng Chen ,  Bin Yang

发明人： Zhihong Liu ,  Feng Chen ,  Bin Yang

IPC分类号： H04N1/40

CPC分类号： H04N1/4052

摘要： The present invention relates to a method and apparatus capable of generating frequency-modulation halftone dots in high speed and belongs to the field of the digital image halftone. In the prior art, read-write operation is usually carried out many times in error rows during processing each pixel so that halftone dots are generated in low speed. In the method according to the present invention, the error generated by the current pixel is buffered in a register file and the final accumulated error values are written in the error rows only after all of the relative pixels are processed. Thus, read-write operation is carried out only once in the error rows for processing each pixel. The present invention also provides an apparatus to implement the method. The apparatus comprises an error row memory, an error buffer register file, a gray generation circuit, a threshold comparison circuit, an error generation circuit, an error buffer register file control circuit, and an error row control circuit. The method and apparatus according to the present invention decrease the steps in operation and improve the speed for generating the frequency-modulation halftone dots.

摘要翻译： 本发明涉及能够高速产生调频半色调点的属于数字图像半色调的领域的方法和装置。 在现有技术中，在处理每个像素期间，读写操作通常在错误行中进行多次，使得半色调点以低速生成。 在根据本发明的方法中，由当前像素产生的误差被缓存在寄存器文件中，并且只有在处理了所有相对像素之后才将最终的累积误差值写入误差行。 因此，在用于处理每个像素的错误行中仅执行一次读写操作。 本发明还提供了一种实现该方法的装置。 该装置包括错误行存储器，错误缓冲寄存器文件，灰色生成电路，阈值比较电路，错误产生电路，错误缓冲寄存器文件控制电路和错误行控制电路。 根据本发明的方法和装置降低了操作步骤，提高了生成调频半色调点的速度。

公开(公告)号：US20100115356A1

公开(公告)日：2010-05-06

申请号：US12513975

申请日：2007-11-05

申请人： Feng Chen ,  Wei Zhu ,  Zhihong Liu

发明人： Feng Chen ,  Wei Zhu ,  Zhihong Liu

IPC分类号： G06F12/00 ,  G06F11/07

CPC分类号： H04N1/4052

摘要： Disclosed are devices and methods for generating dots of an image by using two error row memories, which are capable of reading and writing data synchronously. A device disclosed comprises: a buffer memory A; a buffer memory B; and a memory controller. The memory controller may comprise a read-write control circuit for the buffer memory A, a read-write control circuit for the buffer memory B, and a buffer memory selection circuit. The buffer memory selection circuit is used to generate a read-write selection signal for the buffer memory A and the buffer memory B. The read-write control circuit for the buffer memory A is connected to the buffer memory A and used to implement a read operation or a write operation on the buffer memory A according to the read-write selection signal. The read-write control circuit for the buffer memory B is connected to the buffer memory B and used to implement a read operation or a write operation on the buffer memory B according to the read-write selection signal. The devices and methods are capable of implementing read and write operations on memories synchronously, which can improve the speed of error diffusion during use.

摘要翻译： 公开了通过使用能够同步读取和写入数据的两个误差行存储器来生成图像点的装置和方法。 公开的装置包括：缓冲存储器A; 缓冲存储器B; 和一个内存控制器。 存储器控制器可以包括用于缓冲存储器A的读写控制电路，缓冲存储器B的读写控制电路和缓冲存储器选择电路。 缓冲存储器选择电路用于产生用于缓冲存储器A和缓冲存储器B的读写选择信号。缓冲存储器A的读写控制电路连接到缓冲存储器A，用于实现读 根据读写选择信号对缓冲存储器A进行操作或写操作。 用于缓冲存储器B的读写控制电路连接到缓冲存储器B，用于根据读写选择信号对缓冲存储器B执行读操作或写操作。 这些装置和方法能够同步地对存储器执行读和写操作，这可以提高使用期间误差扩​​散的速度。

公开(公告)号：US20110164082A1

公开(公告)日：2011-07-07

申请号：US13062596

申请日：2009-09-08

申请人： Jianguo Yu ,  Feng Chen ,  Zhihong Liu

发明人： Jianguo Yu ,  Feng Chen ,  Zhihong Liu

IPC分类号： B41J29/38 ,  G06F3/12

CPC分类号： B41J2/04581 ,  B41J2/04541 ,  B41J2/0455 ,  H03K5/05

摘要： Disclosed is a pulse width control device, including: a first monostable multivibrator, for receiving a synchronization pulse, and generating a negative pulse whose width is a first preset threshold; a second monostable multivibrator, for receiving the synchronization pulse, and generating a positive pulse whose width is a second preset threshold; an inverter, for receiving the synchronization pulse, and inverting the synchronization pulse, and outputting an inverted synchronization pulse; and a flip-flop, for receiving the negative pulse, the positive pulse and the inverted synchronization pulse, and generating a synchronization pulse with a width between the first threshold and the second threshold.

摘要翻译： 公开了一种脉冲宽度控制装置，包括：第一单稳态多谐振荡器，用于接收同步脉冲，并产生宽度为第一预设阈值的负脉冲; 第二单稳态多谐振荡器，用于接收所述同步脉冲，并产生宽度为第二预设阈值的正脉冲; 逆变器，用于接收同步脉冲，反相同步脉冲，并输出反相同步脉冲; 以及触发器，用于接收负脉冲，正脉冲和反相同步脉冲，并产生宽度在第一阈值和第二阈值之间的同步脉冲。

公开(公告)号：US20110084739A1

公开(公告)日：2011-04-14

申请号：US12935508

申请日：2009-03-31

申请人： Jianguo Yu ,  Feng Chen ,  Zhihong Liu

发明人： Jianguo Yu ,  Feng Chen ,  Zhihong Liu

IPC分类号： H03K4/94

CPC分类号： H03K4/94

摘要： The present application discloses trapezoidal fire pulse generating methods and devices. According to the devices and methods of the present application, the voltage value of the positive DC control voltage signal, the voltage value of the negative DC control voltage signal, the voltage value of the rise-time DC control voltage signal and a fall-time DC control voltage signal can be determined according to the parameter values of a trapezoidal fire pulse required to be output. Thus, corresponding DC control voltage signals can be generated. Further, the positive DC control voltage signal and the negative DC control voltage signal can be modulated to a square-wave pulse. Then, the rise-time DC control voltage signal, the fall-time DC control voltage signal and the square-wave pulse can be input to a inverse integrator so as to generate a trapezoidal fire pulse. Since there are specific quantitative relations between the rise time and fall time of the trapezoidal fire pulse and the voltage values of the rise-time and fall-time DC control voltage signals, the corresponding rise time and fall time of the trapezoidal fire pulses can be accurately controlled and adjusted so that the output trapezoidal fire pulses can be more stable and accurate.

摘要翻译： 本申请公开了梯形火焰脉冲发生方法和装置。 根据本申请的装置和方法，正直流控制电压信号的电压值，负直流控制电压信号的电压值，上升时间直流控制电压信号的电压值和下降时间 可以根据需要输出的梯形火焰脉冲的参数值来确定直流控制电压信号。 因此，可以产生相应的DC控制电压信号。 此外，正直流控制电压信号和负直流控制电压信号可以被调制成方波脉冲。 然后，可以将上升时间DC控制电压信号，下降时间DC控制电压信号和方波脉冲输入到反向积分器，以产生梯形起动脉冲。 由于梯形火焰脉冲的上升时间和下降时间与上升时间和下降时间直流控制电压信号的电压值之间存在特定的定量关系，所以梯形火焰脉冲的相应上升时间和下降时间可以是 精确控制和调整，使输出梯形火焰脉冲更加稳定准确。

公开(公告)号：US08699080B2

公开(公告)日：2014-04-15

申请号：US12441252

申请日：2007-09-17

申请人： Feng Chen ,  Zhihong Liu ,  Xiaohui Wen ,  Wei Zhu

发明人： Feng Chen ,  Zhihong Liu ,  Xiaohui Wen ,  Wei Zhu

IPC分类号： G06K15/00

CPC分类号： H04N1/4052

摘要： The present invention relates to a method and an apparatus for generating multi-site FM screen dots simultaneously. The method according to the present invention can simultaneously process multiple neighboring pixels in the same row each time and generate multi-site screen dots; and meanwhile the method according to the present invention can renew simultaneously the error accumulation values of multiple locations of error row memory. The apparatus according to the present invention consists of an error row memory, an error row memory control circuit, an error allocation/accumulation register file, an error allocation/accumulation register file control circuit, and a screen dots generating circuit. The method and the apparatus according to the present invention can greatly improve the generating speed of FM screen dots, and only one read-write operation of the error row memory is needed during processing the multiple neighboring pixels each time.

摘要翻译： 本发明涉及同时产生多地点FM屏幕点的方法和装置。 根据本发明的方法可以每次同时处理同一行中的多个相邻像素并产生多位点屏幕点; 同时根据本发明的方法可以同时更新错误行存储器的多个位置的误差累积值。 根据本发明的装置包括错误行存储器，错误行存储器控制电路，错误分配/累积寄存器文件，错误分配/累积寄存器文件控制电路和屏幕点产生电路。 根据本发明的方法和装置可以大大提高FM屏幕点的生成速度，并且每次在处理多个相邻像素期间只需要一个读错误行存储器的读操作。

公开(公告)号：US08608265B2

公开(公告)日：2013-12-17

申请号：US13062596

申请日：2009-09-08

申请人： Jianguo Yu ,  Feng Chen ,  Zhihong Liu

发明人： Jianguo Yu ,  Feng Chen ,  Zhihong Liu

IPC分类号： B41J29/38

CPC分类号： B41J2/04581 ,  B41J2/04541 ,  B41J2/0455 ,  H03K5/05

摘要： Disclosed is a pulse width control device, including: a first monostable multivibrator, for receiving a synchronization pulse, and generating a negative pulse whose width is a first preset threshold; a second monostable multivibrator, for receiving the synchronization pulse, and generating a positive pulse whose width is a second preset threshold; an inverter, for receiving the synchronization pulse, and inverting the synchronization pulse, and outputting an inverted synchronization pulse; and a flip-flop, for receiving the negative pulse, the positive pulse and the inverted synchronization pulse, and generating a synchronization pulse with a width between the first threshold and the second threshold.

摘要翻译： 公开了一种脉冲宽度控制装置，包括：第一单稳态多谐振荡器，用于接收同步脉冲，并产生宽度为第一预设阈值的负脉冲; 第二单稳态多谐振荡器，用于接收所述同步脉冲，并产生宽度为第二预设阈值的正脉冲; 逆变器，用于接收同步脉冲，反相同步脉冲，并输出反相同步脉冲; 以及触发器，用于接收负脉冲，正脉冲和反相同步脉冲，并产生宽度在第一阈值和第二阈值之间的同步脉冲。

公开(公告)号：US08278976B2

公开(公告)日：2012-10-02

申请号：US12935508

申请日：2009-03-31

申请人： Jiunguo Yu ,  Feng Chen ,  Zhihong Liu

发明人： Jiunguo Yu ,  Feng Chen ,  Zhihong Liu

IPC分类号： H03K4/94

CPC分类号： H03K4/94

摘要： The present application discloses trapezoidal fire pulse generating methods and devices. According to the devices and methods of the present application, the voltage value of the positive DC control voltage signal, the voltage value of the negative DC control voltage signal, the voltage value of the rise-time DC control voltage signal and a fall-time DC control voltage signal can be determined according to the parameter values of a trapezoidal fire pulse required to be output. Thus, corresponding DC control voltage signals can be generated. Further, the positive DC control voltage signal and the negative DC control voltage signal can be modulated to a square-wave pulse. Then, the rise-time DC control voltage signal, the fall-time DC control voltage signal and the square-wave pulse can be input to a inverse integrator so as to generate a trapezoidal fire pulse. Since there are specific quantitative relations between the rise time and fall time of the trapezoidal fire pulse and the voltage values of the rise-time and fall-time DC control voltage signals, the corresponding rise time and fall time of the trapezoidal fire pulses can be accurately controlled and adjusted so that the output trapezoidal fire pulses can be more stable and accurate.

摘要翻译： 本申请公开了梯形火焰脉冲发生方法和装置。 根据本申请的装置和方法，正直流控制电压信号的电压值，负直流控制电压信号的电压值，上升时间直流控制电压信号的电压值和下降时间 可以根据需要输出的梯形火焰脉冲的参数值来确定直流控制电压信号。 因此，可以产生相应的DC控制电压信号。 此外，正直流控制电压信号和负直流控制电压信号可以被调制成方波脉冲。 然后，可以将上升时间DC控制电压信号，下降时间DC控制电压信号和方波脉冲输入到反向积分器，以产生梯形起动脉冲。 由于梯形火焰脉冲的上升时间和下降时间与上升时间和下降时间直流控制电压信号的电压值之间存在特定的定量关系，所以梯形火焰脉冲的相应上升时间和下降时间可以是 精确控制和调整，使输出梯形火焰脉冲更加稳定准确。

公开(公告)号：US09073316B2

公开(公告)日：2015-07-07

申请号：US14128911

申请日：2012-08-07

申请人： Peng Jin ,  Feng Chen ,  Zhihong Liu

发明人： Peng Jin ,  Feng Chen ,  Zhihong Liu

IPC分类号： B41J2/07 ,  B41J19/20

CPC分类号： B41J2/07 ,  B41J2/16588 ,  B41J2/2146 ,  B41J19/202 ,  B41J19/205 ,  B41J25/001

摘要： This invention provides an inkjet printing positioning device and control method thereof. The inkjet printing positioning device comprises: base; linear guide rail fixedly mounted on the base; inkjet unit, moving in matched manner with the linear guide rail; ball screw, driving the inkjet unit to move linearly when being rotated; servomotor, for driving the ball screw to rotate; zero position detecting device, mounted in a position on the moving travel route of the inkjet unit from the initial position to the printing area, and for sending zero position signal when detects that the inkjet unit is passing by; controller connecting the zero position detecting device and the servomotor, and for controlling the servomotor to drive the inkjet unit to move from the current position to the printing area and locate there, and controlling the servomotor to drive the inkjet unit to move predetermined displacement upon receipt of zero position signal.

摘要翻译： 本发明提供一种喷墨打印定位装置及其控制方法。 喷墨打印定位装置包括：底座; 直线导轨固定在基座上; 喷墨单元，与直线导轨匹配; 滚珠丝杠，驱动喷墨单元旋转时线性移动; 伺服电机，用于驱动滚珠丝杠旋转; 零位置检测装置，安装在喷墨装置的移动行进路线上从初始位置到打印区域的位置，并且当检测到喷墨单元经过时发送零位置信号; 控制器连接零位检测装置和伺服电机，并且用于控制伺服电机驱动喷墨单元从当前位置移动到打印区域并定位在那里，并且控制伺服电机驱动喷墨单元在接收时移动预定的位移 零位信号。

公开(公告)号：US20140111572A1

公开(公告)日：2014-04-24

申请号：US14128911

申请日：2012-08-07

申请人： Peng Jin ,  Feng Chen ,  Zhihong Liu

发明人： Peng Jin ,  Feng Chen ,  Zhihong Liu

IPC分类号： B41J2/07

CPC分类号： B41J2/07 ,  B41J2/16588 ,  B41J2/2146 ,  B41J19/202 ,  B41J19/205 ,  B41J25/001

摘要： This invention provides an inkjet printing positioning device and control method thereof. The inkjet printing positioning device comprises: base; linear guide rail fixedly mounted on the base; inkjet unit, moving in matched manner with the linear guide rail; ball screw, driving the inkjet unit to move linearly when being rotated; servomotor, for driving the ball screw to rotate; a zero position detecting device, mounted in a position on the moving travel route of the inkjet unit from the initial position to the printing area, and for sending zero position signal when detects that the inkjet unit is passing by; controller connecting the zero position detecting device and the servomotor, and for controlling the servomotor to drive the inkjet unit to move from the current position to the printing area and locate there, and controlling the servomotor to drive the inkjet unit to move predetermined displacement upon receipt of zero position signal.

摘要翻译： 本发明提供一种喷墨打印定位装置及其控制方法。 喷墨打印定位装置包括：底座; 直线导轨固定在基座上; 喷墨单元，与直线导轨匹配; 滚珠丝杠，驱动喷墨单元旋转时线性移动; 伺服电机，用于驱动滚珠丝杠旋转; 零位置检测装置，安装在喷墨装置的移动行进路线上从初始位置到打印区域的位置，并且当检测到喷墨单元经过时发送零位置信号; 控制器连接零位检测装置和伺服电机，并且用于控制伺服电机驱动喷墨单元从当前位置移动到打印区域并定位在那里，并且控制伺服电机驱动喷墨单元在接收时移动预定的位移 零位信号。