公开(公告)号：US20100049888A1

公开(公告)日：2010-02-25

申请号：US12194060

申请日：2008-08-19

申请人： XIAOQIAN ZHANG ,  Zhiyong Guan ,  Qi Li

发明人： XIAOQIAN ZHANG ,  Zhiyong Guan ,  Qi Li

IPC分类号： G06F1/12

CPC分类号： G06F1/12

摘要： A method and apparatus for synchronizing I/O peripherals with a CPU in an embedded system is discussed. The method involves receiving an address from the CPU in response to a read and/or write access, translating the address received from the CPU to identify a I/O peripheral to be accessed, disabling the operation of the CPU and synchronizing a memory from the CPU clock domain to the clock domain of the identified I/O peripheral. Upon completion of the read/write access, the identified I/O peripheral sends an acknowledgment, the memory is then synchronized from the clock domain of the I/O peripheral to the CPU clock domain and the operation of the CPU is then enabled.In another embodiment, if the acknowledgement from the identified I/O peripheral is not received within a predefined time duration, reserved data is sent to the CPU and the operation/access can be restarted.

摘要翻译： 讨论了嵌入式系统中的I / O外设与CPU同步的方法和装置。 该方法包括响应于读和/或写访问从CPU接收地址，翻译从CPU接收的地址以识别要访问的I / O外设，禁止CPU的操作并使来自 CPU时钟域到所识别的I / O外设的时钟域。 在完成读/写访问后，所识别的I / O外设发送确认，然后将存储器从I / O外设的时钟域同步到CPU时钟域，然后启用CPU的操作。 在另一个实施例中，如果在预定义的持续时间内未接收到来自所识别的I / O外围设备的确认，则保留的数据被发送到CPU，并且可以重新启动操作/访问。

公开(公告)号：US20110304522A1

公开(公告)日：2011-12-15

申请号：US12816202

申请日：2010-06-15

申请人： HENRY ZENG ,  JING QIAN ,  XIAOQIAN ZHANG ,  Xuexin LIU

发明人： HENRY ZENG ,  JING QIAN ,  XIAOQIAN ZHANG ,  Xuexin LIU

IPC分类号： G09G5/00

CPC分类号： G09G5/006 ,  G09G2370/042

摘要： A multi-monitor display driver that provides consolidated EDID data is provided. The display driver reads the EDID data from the one or more monitors coupled to the driver, determines a consolidated EDID data that is compatible with each of the monitors, and writes the EDID data to an EDID memory in the driver. A source interacting with the driver reads the consolidated EDID data to control interactions with the driver.

摘要翻译： 提供了提供综合EDID数据的多显示器显示驱动程序。 显示驱动器从耦合到驱动器的一个或多个监视器读取EDID数据，确定与每个监视器兼容的合并EDID数据，并将EDID数据写入驱动器中的EDID存储器。 与驱动程序交互的源将读取合并的EDID数据，以控制与驱动程序的交互。