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    • 3. 发明授权
    • Method and apparatus for adaptive Phong shading
    • 适应性Phong阴影的方法和装置
    • US5253339A
    • 1993-10-12
    • US560869
    • 1990-07-26
    • Stuart WellsJames Van LooJack R. McKeownMukund Bhakta
    • Stuart WellsJames Van LooJack R. McKeownMukund Bhakta
    • G06T15/83G06F15/72
    • G06T15/83
    • An adaptive shading method is utilized to generate shaded images in real time. The technique to shade the image is determined according to the curvature of the surface, the variation of the light vector across the surface, and the variation of the eye vector across the surface. The color or intensity is first computed at each of the vertices of the polygon. A series of tests are then performed to determine the order equation that is to be used to interpolate the color or intensity across the polygon between the vertices. Using this technique, polygons having a slight or no curvature and an infinite light source (thus being the simplest form of shading), will use an extremely fast, low order equation to interpolate across the polygon. Polygons, having a high degree of curvature and/or positional light source will utilize, as necessary, a higher order equation which requires additional computation time but produces desirable shading results.
    • 采用自适应遮蔽方法实时生成阴影图像。 根据表面的曲率,穿过表面的光矢量的变化以及穿过表面的眼矢量的变化来确定遮蔽图像的技术。 首先在多边形的每个顶点处计算颜色或强度。 然后进行一系列测试以确定要用于插入顶点之间的多边形上的颜色或强度的顺序方程。 使用这种技术,具有轻微或无曲率的多边形和无限光源(因此是最简单的阴影形式)将使用非常快速的低阶方程在多边形上进行内插。 具有高曲率和/或位置光源的多边形将根据需要利用需要额外的计算时间而产生期望的阴影结果的较高阶方程。
    • 4. 发明授权
    • Method and apparatus for the flow control of devices
    • 用于设备流量控制的方法和装置
    • US5016161A
    • 1991-05-14
    • US413834
    • 1989-09-28
    • James Van LooSusan CarrieJerald EvansJeffrey Spirn
    • James Van LooSusan CarrieJerald EvansJeffrey Spirn
    • G06F9/50
    • G06F9/5011
    • The system of the present invention provides for the flow control of commands to devices connected through the system's memory management unit and is particularly useful in a multi-tasking computer system in which multiple processes access the same device. In the method and apparatus of the present invention, devices that are connected to the system through the MMU are controlled using the page fault mechanism of the MMU and the page fault handler in each segment. Addresses are allocated in the process address space for each process to provide for the addressing of the devices and device queues connected through the MMU, such that one device or one device queue is mapped into one segment of each process address space that will access the device. The "valid bits" associated with each page in a segment are turned on/off by the process or operating system in order to control the device. If the valid bits are off or reset and an attempt is made to access at the address, a page fault occurs and the page fault mechanism invokes the page fault handler of the corresponding segment. The page fault mechanism of the MMU and the page fault handler of each segment are then utilized to determine the reason the page fault occurred with respect to a particular process and perform predetermining steps to control the flow of commands to the device.
    • 本发明的系统提供对通过系统的存储器管理单元连接的设备的命令的流量控制,并且在多任务计算机系统中特别有用,其中多个进程访问相同的设备。 在本发明的方法和装置中,使用MMU的页面故障机制和每个段中的页面故障处理程序来控制通过MMU连接到系统的设备。 在每个进程的进程地址空间中分配地址以提供通过MMU连接的设备和设备队列的寻址,使得一个设备或一个设备队列被映射到将访问设备的每个进程地址空间的一个段 。 通过进程或操作系统打开/关闭与段中的每个页面相关联的“有效位”,以便控制该设备。 如果有效位关闭或重置,并尝试访问地址,则会发生页面错误,页面错误机制调用相应段的页面错误处理程序。 然后使用MMU的页面故障机制和每个段的页面故障处理程序来确定页面故障相对于特定进程发生的原因,并执行预定步骤来控制到设备的命令流。
    • 6. 发明申请
    • Scalable Transfer Feedback
    • 可扩展转移反馈
    • US20090300136A1
    • 2009-12-03
    • US12127016
    • 2008-05-27
    • James Van Loo
    • James Van Loo
    • G06F15/16
    • H04L67/025H04L67/34
    • Scalable transfer feedback is described. In embodiment(s), a remote management service can establish a client session with a client device and provide an address that redirects the client device to a firmware download service to download executable program code. The firmware download service can initiate a download of the executable program code to the client device when the client device initiates a request for the executable program code. The firmware download service can also communicate a download status indicator to the client device when the download of the executable program code is initiated, and receive the download status indicator back from the client device when the download of the executable program code is complete.
    • 描述可扩展传输反馈。 在实施例中,远程管理服务可以建立与客户端设备的客户端会话,并提供将客户端设备重定向到固件下载服务以下载可执行程序代码的地址。 当客户端设备发起对可执行程序代码的请求时,固件下载服务可以启动对客户端设备的可执行程序代码的下载。 当启动可执行程序代码的下载时,固件下载服务还可以将下载状态指示器传送到客户端设备,并且当可执行程序代码的下载完成时,从客户端设备接收下载状态指示器。
    • 7. 发明授权
    • Scalable transfer feedback
    • 可扩展传输反馈
    • US07788351B2
    • 2010-08-31
    • US12127016
    • 2008-05-27
    • James Van Loo
    • James Van Loo
    • G06F15/177G06F15/16
    • H04L67/025H04L67/34
    • Scalable transfer feedback is described. In embodiment(s), a remote management service can establish a client session with a client device and provide an address that redirects the client device to a firmware download service to download executable program code. The firmware download service can initiate a download of the executable program code to the client device when the client device initiates a request for the executable program code. The firmware download service can also communicate a download status indicator to the client device when the download of the executable program code is initiated, and receive the download status indicator back from the client device when the download of the executable program code is complete.
    • 描述可扩展传输反馈。 在实施例中,远程管理服务可以建立与客户端设备的客户端会话,并提供将客户端设备重定向到固件下载服务以下载可执行程序代码的地址。 当客户端设备发起对可执行程序代码的请求时,固件下载服务可以启动对客户端设备的可执行程序代码的下载。 当启动可执行程序代码的下载时,固件下载服务还可以将下载状态指示器传送到客户端设备,并且当可执行程序代码的下载完成时,从客户端设备接收下载状态指示器。
    • 9. 发明授权
    • Method and apparatus for the synchronization of devices
    • 用于设备同步的方法和装置
    • US5016166A
    • 1991-05-14
    • US413990
    • 1989-09-28
    • James Van LooSusan CarrieJerald Evans
    • James Van LooSusan CarrieJerald Evans
    • G06F9/50
    • G06F9/5011
    • The system of the present invention provides for the synchronization of access devices connected through the system's memory management unit and is particularly useful in a multi-tasking computer system in which multiple processes access the same device. In the method and apparatus of the present invention, devices that are connected to the system through the MMU are controlled using the page fault mechanism of the MMU and the page fault handler in each segment. Addresses are allocated in the process address space for each process to provide for the addressing of the devices and device queues connected through the MMU, such that one device or one device queue is mapped into one segment of each process address space that will access the device. The "valid bits" associated with each page in a segment are turned on/off by the process or operating system in order to control the device. If the valid bits are off and an attempt is made to access at the address a page fault occurs and the page fault mechanism invokes the page fault handler of the corresponding segment. The page fault mechanism of the MMU and the page fault handler of each segment are then utilized to determine the reason the page fault occurred with respect to a particular process and to perform steps to synchronize access to the device.
    • 本发明的系统提供了通过系统的存储器管理单元连接的接入设备的同步,并且在多任务计算机系统中特别有用,其中多个进程访问同一设备。 在本发明的方法和装置中,使用MMU的页面故障机制和每个段中的页面故障处理程序来控制通过MMU连接到系统的设备。 在每个进程的进程地址空间中分配地址以提供通过MMU连接的设备和设备队列的寻址,使得一个设备或一个设备队列被映射到将访问设备的每个进程地址空间的一个段 。 通过进程或操作系统打开/关闭与段中的每个页面相关联的“有效位”,以便控制该设备。 如果有效位被关闭,并尝试在地址处访问页面错误,并且页面错误机制调用相应段的页面故障处理程序。 然后利用MMU的页面故障机制和每个段的页面故障处理程序来确定页面故障相对于特定进程发生的原因,并执行步骤来同步对设备的访问。