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    • 6. 发明授权
    • Method and apparatus for appending memory commands during a direct memory access operation
    • 在直接存储器访问操作期间附加存储器命令的方法和装置
    • US06678755B1
    • 2004-01-13
    • US09608544
    • 2000-06-30
    • James R. PetersonAaftab MunshiMohammed Sriti
    • James R. PetersonAaftab MunshiMohammed Sriti
    • G06F1314
    • G06F13/28
    • A direct memory access (DMA) controller for controlling memory access operations in a memory. During a memory access operation, the DMA controller executes a chain of DMA commands stored in a memory and having a respective address. The DMA controller can enter a self-linking mode where additional DMA commands can be appended to the end of the command chain without terminating the memory access operation, regardless of whether the last DMA command of the command chain has been executed by the DMA controller. The self-linking mode is entered when a link-address provided by the last DMA command matches a code. The code to cause the DMA controller to enter the self-linking mode may be a link address which points to the last executed DMA command, or alternatively, a predetermined bit pattern. The DMA controller exits the self-linking command and continues the memory access operation upon detecting a new link address for a new DMA command that is to be appended to the command chain. The new link address may be detected by having the DMA controller periodically check the link address of the last executed DMA command.
    • 用于控制存储器中的存储器访问操作的直接存储器访问(DMA)控制器。 在存储器访问操作期间,DMA控制器执行存储在存储器中并具有相应地址的一系列DMA命令。 DMA控制器可以进入自链接模式,其中附加的DMA命令可以附加到命令链的末尾而不终止存储器访问操作,而不管命令链的最后一个DMA命令是否由DMA控制器执行。 当最后一个DMA命令提供的链接地址匹配一个代码时,输​​入自链接模式。 导致DMA控制器进入自链接模式的代码可以是指向最后执行的DMA命令的链接地址,或者备选地是预定位模式。 DMA控制器退出自链接命令,并在检测到要附加到命令链的新DMA命令的新链接地址时继续存储器访问操作。 可以通过使DMA控制器周期性地检查最后执行的DMA命令的链路地址来检测新的链路地址。
    • 9. 发明授权
    • Quick change stacked tube feeder
    • 快速更换堆叠式送料机
    • US6126376A
    • 2000-10-03
    • US16290
    • 1998-01-30
    • James R. Peterson
    • James R. Peterson
    • H05K13/02B65B69/00
    • H05K13/021Y10T29/53478
    • The invention is a stacked tube component feeder with changeable parts to accommodate different size components. A feed station, including a channel, is mounted on a base. The feed station includes a slot for holding component tubes. A changeable component track is mounted in the channel, and a singulator is mounted on the component track to prevent the feeding of more than one component at a time to a changeable component nest. A removable nest is mounted on the base for receiving components from the removable component track, and transports the component between first and second positions on the base.
    • 本发明是一种具有可变部件以容纳不同尺寸部件的堆叠管部件进料器。 包括通道的进料站安装在基座上。 进料站包括用于保持组分管的槽。 可变组件轨道安装在通道中,并且分离器安装在组件轨道上,以防止一次将多于一个组件进给到可更换组件嵌套。 可移动的嵌套安装在基座上用于从可拆卸的部件轨道接收组件,并且在基座上的第一和第二位置之间传送部件。