公开(公告)号：US20040010531A1

公开(公告)日：2004-01-15

申请号：US10191168

申请日：2002-07-09

Applicant: Silicon Integrated Systems Corp.

Inventor： Chung-Yen Lu ,  Kuo-Wei Yeh

IPC: G06F007/44

CPC classification number: G06F1/0356 ,  G06F7/483 ,  G06F7/556 ,  G06F2101/10

Abstract: An apparatus for calculating an exponential calculating result for a base 2 floating-point number comprises a transforming device, K exponential tables and a multiplier. The transforming device receives the floating-point number, transforms the floating-point number to an integer part and a fractional part and outputs the integer part and the fractional part. The fractional part is an N-bit number and divided into K parts which have N1, N2, . . . , NK bits respectively, wherein NnullN1nullN2null . . . nullNK. Each of the exponential tables receives one of the K parts divided from the fractional part and outputs a result. The multiplier receives all results from the exponential tables and outputs a mantissa. The integer part outputted form the transforming device is an exponent. The mantissa, the exponent and a sign whose value is 0 is used to represent an exponential calculating result which is represented in the following format: (null1)Synull2Eynullmy, where Sy is the sign whose value is 0, Ey is the integer part, my is the mantissa and lnullmy

Abstract translation: 用于计算基本2浮点数的指数计算结果的装置包括变换装置，K个指数表和乘数。 变换设备接收浮点数，将浮点数转换为整数部分和小数部分，并输出整数部分和小数部分。 小数部分是N位数，并分为具有N1，N2的K个部分。 。 。 ，NK位，其中N = N1 + N2 +。 。 。 + NK。 每个指数表接收从小数部分中分离的K个部分中的一个，并输出结果。 乘数从指数表接收所有结果并输出尾数。 从变换装置输出的整数部分是指数。 尾数，指数和值为0的符号用于表示以下格式表示的指数计算结果：（-1） .2 .my，其中Sy是其值的符号 是0，Ey是整数部分，我是尾数，l <= My <2。

公开(公告)号：US20040075654A1

公开(公告)日：2004-04-22

申请号：US10270681

申请日：2002-10-16

Applicant: SILICON INTEGRATED SYSTEMS CORP.

Inventor： Chien-Chung Hsiao ,  Kuo-Wei Yeh

IPC: G06T001/00

CPC classification number: G06T15/40

Abstract: A three-dimensional (3-D) digital image processor and a method for processing a visibility for use in a displaying procedure of a 3-D digital image are disclosed. The 3-D digital image processor includes a depth map generator, a memory device and a rendering engine. The method includes steps of presetting a depth map according to a plurality of pixels received, the depth map storing the pixels and reference depths corresponding thereto, and receiving a pixel data and proceeding a visibility test with reference to the depth map, thereby determining whether to proceed a rendering operation on the 3-D digital image by the pixel data.

Abstract translation: 公开了一种三维（3-D）数字图像处理器和用于处理在3D数字图像的显示过程中使用的可视性的方法。 3-D数字图像处理器包括深度图生成器，存储器件和呈现引擎。 该方法包括根据接收到的多个像素来预设深度图的深度图，存储与其对应的像素和参考深度的深度图，以及接收像素数据并参照深度图进行可见性测试，从而确定是否 通过像素数据对3-D数字图像进行渲染操作。