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    • 7. 发明授权
    • Memory access method and circuit in which access timing to a memory is
divided into N periods to be accessed from N access request sources
    • 存储器访问方法和电路,其中对存储器的访问定时被划分为N个周期以从N个访问请求源访问
    • US5323488A
    • 1994-06-21
    • US582009
    • 1990-09-14
    • Yutaka Udagawa
    • Yutaka Udagawa
    • G06K15/12G11C7/00G11C7/22G06F12/00
    • G06K15/129G06K15/128G11C7/00G11C7/22
    • An access circuit and method for accessing a single memory having a plurality of access request sources, in which a minimum access time of the memory is adopted as a unit time, a time corresponding to a minimum possible waiting time of each of the plurality of access request sources is adopted as one period, and the period is set as a set of the unit times. The one period is equally divided into divided times in accordance with the number of the access request sources, and each divided time is equally allocated to a corresponding one of the access request sources as an access time therefor. The memory is accessed by the access request sources at every access time allocated to the access request sources. Also provided is a printer apparatus which includes a writing circuit for writing color component data, which represents an image of a plurality of colors, in a single memory in compressed form, a reading circuit for reading color component data of different colors out of respective ones of different addresses of the single memory independently and at predetermined time units, a plurality of decoding circuits for decoding the color component data of each color read out by the reading circuit into corresponding color image data, and an image forming unit for reproducing a corresponding color image based on the image data of each color from the plurality of decoding circuits.
    • 一种访问电路和方法,用于访问具有多个访问请求源的单个存储器,其中存储器的最小访问时间被采用为单位时间,对应于多个访问中的每一个的最小可能等待时间的时间 采用请求源作为一个周期,将周期设置为单位时间的集合。 一个周期根据访问请求源的数量等分成分割时间,并且每个划分的时间被等同地分配给相应的一个访问请求源作为其访问时间。 访问请求源在分配给访问请求源的每个访问时间访问存储器。 还提供了一种打印机装置,其包括用于将表示多种颜色的图像的颜色分量数据以压缩形式写入单个存储器中的写入电路,用于从各个单独的存储器中读取不同颜色的颜色分量数据的读取电路 独立地并且以预定时间单位的单个存储器的不同地址的多个解码电路,用于将由读取电路读出的每种颜色的颜色分量数据解码为相应的彩色图像数据的多个解码电路,以及用于再现相应颜色的图像形成单元 基于来自多个解码电路的每种颜色的图像数据的图像。