In order to solve the low efficiency and poor precision problems of traditional ink control methods on domestic offset printers,developing modern ink automatic control system has become more and more urgent.As an impo...In order to solve the low efficiency and poor precision problems of traditional ink control methods on domestic offset printers,developing modern ink automatic control system has become more and more urgent.As an important subsystem,the hu- man computer interface (HCI) is a key function for the wholly automatic control.Once this goal is obtained,all the printing pro- cedures especially the automatic control of ink volume should be finished with human computer interface in different areas.consid- ering the HCI design theory and structure characteristics of domestic printers comprehensively,the HCI prototype for automatic ink control system has been developed based on Visual Basic platform.As the individual ink key is instead of the integrated key,the di- vision result of ink fountain can be displayed on the interface.Through the interface,the dynamic adjusting functions such as mod- ifying ink volume,locking or unlocking each ink key and real-time displaying the adjusting results etc.can be completed.The sim- ulation test has shown that the opening and practical feature of the prototype is satisfactory.展开更多
在分析传统的色彩检测与控制方法的基础上,确定了色彩自动检测与控制系统的工作流程、系统构成及体系结构.对系统中的关键部分,包括检测系统和控制系统进行了分析.其中,检测系统由分光光度仪、工艺数据库、色墨转化算法模块组成;控制系...在分析传统的色彩检测与控制方法的基础上,确定了色彩自动检测与控制系统的工作流程、系统构成及体系结构.对系统中的关键部分,包括检测系统和控制系统进行了分析.其中,检测系统由分光光度仪、工艺数据库、色墨转化算法模块组成;控制系统由计算机直接控制(direct digital control,DDC)系统、墨键集成控制模块以及墨键控制台组成.在此基础上建立了基于JDF(job definition format)规范的色彩自动检测和控制系统流程.通过在某国产胶印机上进行实际测试与应用,证实了该系统的有效性.展开更多
LTE-A系统使用参考信号进行上行信道估计,而使用PUCCH format 2a/2b发送上行控制信息时,由于每个时隙只有一个SC-FDMA符号可以用于传输参考信号,所以此时接收端不能直接利用参考信号进行信道估计。给出了一种易实现且复杂度低的PUCCH 2a...LTE-A系统使用参考信号进行上行信道估计,而使用PUCCH format 2a/2b发送上行控制信息时,由于每个时隙只有一个SC-FDMA符号可以用于传输参考信号,所以此时接收端不能直接利用参考信号进行信道估计。给出了一种易实现且复杂度低的PUCCH 2a/2b的半盲检测接收算法,该算法利用ACK/NACK信息辅助信道估计。仿真结果表明,文中提出的方法能有效提高PUCCH 2a/2b的接收性能。展开更多
文摘In order to solve the low efficiency and poor precision problems of traditional ink control methods on domestic offset printers,developing modern ink automatic control system has become more and more urgent.As an important subsystem,the hu- man computer interface (HCI) is a key function for the wholly automatic control.Once this goal is obtained,all the printing pro- cedures especially the automatic control of ink volume should be finished with human computer interface in different areas.consid- ering the HCI design theory and structure characteristics of domestic printers comprehensively,the HCI prototype for automatic ink control system has been developed based on Visual Basic platform.As the individual ink key is instead of the integrated key,the di- vision result of ink fountain can be displayed on the interface.Through the interface,the dynamic adjusting functions such as mod- ifying ink volume,locking or unlocking each ink key and real-time displaying the adjusting results etc.can be completed.The sim- ulation test has shown that the opening and practical feature of the prototype is satisfactory.
文摘在分析传统的色彩检测与控制方法的基础上,确定了色彩自动检测与控制系统的工作流程、系统构成及体系结构.对系统中的关键部分,包括检测系统和控制系统进行了分析.其中,检测系统由分光光度仪、工艺数据库、色墨转化算法模块组成;控制系统由计算机直接控制(direct digital control,DDC)系统、墨键集成控制模块以及墨键控制台组成.在此基础上建立了基于JDF(job definition format)规范的色彩自动检测和控制系统流程.通过在某国产胶印机上进行实际测试与应用,证实了该系统的有效性.
文摘LTE-A系统使用参考信号进行上行信道估计,而使用PUCCH format 2a/2b发送上行控制信息时,由于每个时隙只有一个SC-FDMA符号可以用于传输参考信号,所以此时接收端不能直接利用参考信号进行信道估计。给出了一种易实现且复杂度低的PUCCH 2a/2b的半盲检测接收算法,该算法利用ACK/NACK信息辅助信道估计。仿真结果表明,文中提出的方法能有效提高PUCCH 2a/2b的接收性能。
