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    • 2. 发明申请
    • CROSS-IMAGE REFERENCING OF PROGRAM CODE
    • 程序代码的交叉图像参考
    • WO9215932A3
    • 1992-10-15
    • PCT/US9201831
    • 1992-03-04
    • DIGITAL EQUIPMENT CORP
    • SITES RICHARD L
    • G06F9/30G06F9/06G06F9/40G06F9/44G06F9/45
    • G06F9/4425
    • Information about the effects of calling each entry point in a program and information about external calls made by the program are recorded in an image information file. In addition to the addresses of the entry points and call destinations, the information may include any callback parameters and register usage associated with the entry points, and any definite values passed by the calls. When translating two separate but mutually dependent programs that are not easily merged for simultaneous translation, the image information files for the respective programs permit the programs to be alternately translated with rapid convergence by an iterative method of checked assumptions and re-translation. By matching the addresses of the entry points of a first program with the addresses of the external calls for a second program, and by matching the addresses of the external calls in the first program with the addresses of the program entry points in the second program, the relevant external calls and entry points in the image information file for the second program are identified. One program should be retranslated when a preceding retranslation of the other program changes the information for the matching calls and entry points in such a way that changed information might enable additional instructions to be discovered in the program under consideration for translation.
    • 有关调用程序中每个入口点的效果的信息和程序所做外部调用的信息都记录在图像信息文件中。 除了入口点和呼叫目的地的地址之外,该信息还可以包括与入口点相关联的任何回叫参数和注册使用情况以及由呼叫传递的任何明确值。 当翻译两个单独但相互依赖的程序,这些程序不容易合并以进行同时翻译时,各个程序的图像信息文件允许通过迭代方法检查假设和重新翻译,以快速收敛的方式交替翻译程序。 通过将第一节目的入口点的地址与第二节目的外部呼叫的地址相匹配,并且通过将第一节目中的外部呼叫的地址与第二节目中的节目入口点的地址相匹配, 识别用于第二节目的图像信息文件中的相关外部呼叫和入口点。 如果先前重新编译另一个程序改变匹配调用和入口点的信息时,应该重新编译一个程序,以便更改后的信息可以在考虑翻译的程序中发现附加指令。
    • 6. 发明申请
    • METHOD OF TILING A FIGURE IN GRAPHICS RENDERING SYSTEM
    • 在图形渲染系统中倾斜图形的方法
    • WO8906033A3
    • 1989-07-27
    • PCT/US8804472
    • 1988-12-19
    • DIGITAL EQUIPMENT CORP
    • KELLEHER BRIANFURLONG THOMAS C
    • G09G5/00G06T1/60G06T11/20G06T11/40G09G5/20G09G5/36G09G5/393G09G1/16
    • G09G5/393
    • Method of drawing a convex geometric figure to framebuffer storage sequentially addressable as a plurality of update arrays of determined origins which tile the framebuffer. An array comprises pixel storage sites, each specifiable by an offset from array origin, and concurrently updatable. A figure is specified as a set of directed lines, whose segments between mutual intersections comprise the figure boundary, perambulating the boundary in a single sense. The figure is tiled by a subset of the update arrays. A first array is accessed. Tests are performed to find whether the figure extends to arrays above or below the accessed array; if so the array address is stored and marked for either or both extensions. In one embodiment, a test is performed for left extension, and the steps are repeated until no further left extension is found; returning to the initial array, the steps are repeated for right extension to complete the horizontal subset. The array marked for either up or down extension is next accessed and the steps are repeated with respect to the indicated vertically adjacent array until no further extension is found in that vertical direction; the steps are repeated for the other vertical direction. The figure has been tiled. The extension test tests, with respect to the directed lines and a pair of sample pixels adjacent to the questionable array, for sidedness of each sample pixel with respect to each line.
    • 9. 发明申请
    • GRAPHIC AND TEXTUAL IMAGE GENERATOR FOR A RASTER SCAN DISPLAY
    • 用于RASTER扫描显示的图形和文字图像发生器
    • WO1982001614A1
    • 1982-05-13
    • PCT/US1981001419
    • 1981-10-22
    • DIGITAL EQUIPMENT CORP
    • DIGITAL EQUIPMENT CORPRUPP CHARLE R
    • G09G01/16
    • G09G5/243G06F3/1454G09G5/024G09G5/26G09G5/30G09G5/36G09G5/39
    • A raster scan display apparatus for generating both graphic and textual images. The display refresh memory (46) is broken into an information memory (79) and an attribute memory (120). The information memory has one location for each picture element in the display; the attribute memory is of lower resolution and has one memory location for a plurality of picture elements. The attribute memory provides foreground and background attributes which can be varied only in multiples of picture element locations. In response to the information memory contents for each location, either the foreground or the background attribute is provided to the display, from the attribute memory. The information and attribute memories operate in conjunction with a pattern generator (136, 160, 162) to establish the information to be displayed between pairs of points. The pattern generator provides a finite length, repeating pattern of 1's and 0's representing the selection of foreground or background attribute for each location intermediate first and second points on the display. The rate at which the pattern is shifted may be varied to alter character or object size on the display, thus permitting all sizes of a character to be represented in memory in a cell of small fixed size. For generating two-dimensional images, two pattern generators are employed; the second pattern generator provides the starting positions and patterns for the first pattern generator. This permits characters to be reoriented-i.e., tilted, italicized, etc., with simple commands which reset the parameters governing the operation of the pattern generators.
    • 一种用于生成图形和文本图像的光栅扫描显示装置。 显示刷新存储器(46)被分解成信息存储器(79)和属性存储器(120)。 信息存储器对于显示器中的每个图像元素具有一个位置; 属性存储器具有较低的分辨率并且具有用于多个图像元素的一个存储器位置。 属性存储器提供前景和背景属性,它们只能以像素位置的倍数进行变化。 响应于每个位置的信息存储器内容,从属性存储器向显示器提供前景或背景属性。 信息和属性存储器与模式发生器(136,160,162)一起操作以建立要在点对之间显示的信息。 图案生成器提供有限长度,1和0的重复图案,其代表对显示器上的第一和第二点之间的每个位置的前景或背景属性的选择。 可以改变图案移位的速率以改变显示器上的字符或对象尺寸,从而允许将字符的所有尺寸在小固定尺寸的单元格中的存储器中表示。 为了产生二维图像,采用两个图案发生器; 第二图案发生器提供第一图案发生器的起始位置和图案。 这允许字符被重新定向,即倾斜,斜体等,其中简单的命令重新设置控制图案发生器的操作的参数。