Method for building a color look-up table
    1.
    发明授权
    Method for building a color look-up table 失效
    构建颜色查找表的方法

    公开(公告)号:US5003299A

    公开(公告)日:1991-03-26

    申请号:US479982

    申请日:1990-02-14

    IPC分类号: G09G5/02

    CPC分类号: G09G5/02

    摘要: A method for building an inverse color look-up table in a color graphics system. The inverse color look-up table accepts as an address input RGB color information and provides as a data output index information for indexing a color look-up table. The method initializes an array of data elements, each of said data elements for storing said index information, each of said data elements corresponding to a color position in RGB color space. A first index value is stored in the array, the first index value corresponding to an index for the color look-up table. The first index value is stored in a first of the data elements, the first data element corresponding to a color represented by the first index value in the color look-up table. An address of the first data element is also stored in a queue means. For a second of the data elements, it is determined whether the second data element has been assigned an index value. If the second data element has not been assigned an index value, second data element is assigned the first index value and an address is stored for the second data element in the queue means.

    摘要翻译: 一种用于在彩色图形系统中构建反色查找表的方法。 反色查找表接受地址输入RGB颜色信息,并提供用于索引颜色查找表的数据输出索引信息。 该方法初始化数据元素阵列,每个所述数据元素用于存储所述索引信息,每个所述数据元素对应于RGB颜色空间中的颜色位置。 第一个索引值存储在数组中,第一个索引值对应于颜色查找表的索引。 第一索引值存储在第一数据元素中,第一数据元素对应于由颜色查找表中的第一索引值表示的颜色。 第一数据元素的地址也存储在队列装置中。 对于第二数据元素,确定是否已经为第二数据元素分配了索引值。 如果第二数据元素尚未被分配索引值,则为第二数据元素分配第一索引值,并且为队列装置中的第二数据元素存储地址。

    Color graphics system
    2.
    发明授权
    Color graphics system 失效
    彩色图形系统

    公开(公告)号:US5068644A

    公开(公告)日:1991-11-26

    申请号:US195083

    申请日:1988-05-17

    IPC分类号: G09G5/02

    CPC分类号: G09G5/02

    摘要: A color graphics system for use with a computer. The color graphics system utilizes a look-up table having index values to be stored in a frame buffer. The look-up table is addressed by providing color information, such as RGB color information to the table. The index values may be used to index a second look-up table for providing color information, such as RGB color information. The present invention further disclosed methods of insuring index values provided by the look-up table closely approximate the desired color within the available color space. Further the present invention provided methods for performing arithmetic transfer operations on colors represented by indexes in the frame buffer.

    摘要翻译: 用于计算机的彩色图形系统。 彩色图形系统使用具有索引值的查找表来存储在帧缓冲器中。 通过向表格提供诸如RGB颜色信息的颜色信息来寻址查找表。 索引值可以用于索引用于提供颜色信息的第二查找表,诸如RGB颜色信息。 本发明进一步公开了确保由查找表提供的指标值紧密接近可用颜色空间内的期望颜色的方法。 此外,本发明提供了对由帧缓冲器中的索引表示的颜色执行算术传送操作的方法。