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    • 6. 发明授权
    • Real-time PC based volume rendering system
    • 实时基于PC的音量渲染系统
    • US6008813A
    • 1999-12-28
    • US905238
    • 1997-08-01
    • Hugh C. LauerRandy B. OsborneHanspeter Pfister
    • Hugh C. LauerRandy B. OsborneHanspeter Pfister
    • G06T1/20G06T1/60G06T15/00G06T15/08G06T15/40
    • G06T15/08G06T1/60G06T15/005G06T15/40
    • Apparatus is provided to enable real-time volume rendering on a personal computer or a desktop computer in which a technique involving blocking of voxel data organizes the data so that all voxels within a block are stored at consecutive memory addresses within a single memory model, making possible fetching an entire block of data in a burst rather than one voxel at a time. This permits utilization of DRAM memory modules which provide high capacity and low cost with substantial space savings. Additional techniques including sectioning reduces the amount of intermediate storage in a processing pipeline to an acceptable level for semiconductor implementation. A multiplexing technique takes advantage of blocking to reduce the amount of data needed to be transmitted per block, thus reducing the number of pins and the rates at which data must be transmitted across the pins connecting adjacent processing modules with each other. A mini-blocking technique saves the time needed to process sections by avoiding reading entire blocks for voxels near the boundary between a section and previously processed sections.
    • 提供了一种用于在个人计算机或台式计算机上实时体积渲染的装置,其中涉及阻塞体素数据的技术组织数据,使得块内的所有体素被存储在单个存储器模型内的连续存储器地址处,使得 一次可能在突发而不是一个体素中获取整个数据块。 这允许利用提供高容量和低成本的DRAM存储器模块,同时节省了大量空间。 包括切片的其他技术将处理管线中的中间存储量减少到半导体实现的可接受水平。 复用技术利用阻塞来减少每个块需要传输的数据量,从而减少引脚数量和数据必须在连接相邻处理模块的引脚之间传输的速率。 微型阻塞技术通过避免读取部分和先前处理的部分之间边界附近的体素的整个块来节省处理部分所需的时间。
    • 7. 发明授权
    • Computer network interface and network protocol with direct deposit
messaging
    • 计算机网络接口和网络协议,具有直接存取信息
    • US5790804A
    • 1998-08-04
    • US596708
    • 1996-02-05
    • Randy B. Osborne
    • Randy B. Osborne
    • G06F15/00G06F13/00H04L12/56H04L29/08H04Q11/04G06F15/163
    • H04Q11/0478H04L2012/5616H04L2012/5652
    • A network protocol and interface using direct deposit messaging provides low overhead communication in a network of multi-user computers. This system uses both sender-provided and receiver-provided information to process received messages and to deposit data directly in memory and to conditionally interrupt a host processor based on control information. Message processing is separated into data delivery, which bypasses the host processor and operating system, and message actions which may or may not require host processor interaction. In this protocol, a message includes an indication of the operation desired by the sender, an operand specified by the sender and an operand which refers to some information stored at the receiver. The receiver ensures that the desired action is permitted and then, if the action is permitted, performs the action according to both the operand specified by the sender and the state of the receiver. The action may be message delivery, wherein the operands in the message specify values for use in various addressing modes including direct, indirect, post-increment and index modes. The action may also be conditionally generating an interrupt, wherein the operands are used, in combination with the receiver state, to determine whether a message requires immediate or delayed action. The action may also be an operation on a register in the network interface or on other information stored at the receiver.
    • 使用直接存取消息的网络协议和接口在多用户计算机的网络中提供低开销通信。 该系统使用发送者提供的和接收者提供的信息来处理接收到的消息并且将数据直接存储在存储器中并且基于控制信息有条件地中断主机处理器。 消息处理分为数据传送,绕过主机处理器和操作系统,以及可能需要或可能不需要主机处理器交互的消息动作。 在该协议中,消息包括发送者期望的操作的指示,由发送者指定的操作数和引用存储在接收者处的一些信息的操作数。 接收器确保允许所需的动作,然后如果允许动作,则根据发送方指定的操作数和接收方的状态执行动作。 该动作可以是消息传递,其中消息中的操作数指定用于各种寻址模式的值,包括直接,间接,后递增和索引模式。 该动作还可以有条件地产生中断,其中与接收器状态结合使用操作数来确定消息是否需要立即或延迟动作。 该动作也可以是网络接口中的寄存器或存储在接收器处的其他信息上的操作。