会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Apparatus for generating memory address of a display memory
    • 一种用于产生显示存储器的存储器地址的装置
    • US4779084A
    • 1988-10-18
    • US15015
    • 1987-02-17
    • Toshio TanakaHiroyuki SakaiNobuo Shibasaki
    • Toshio TanakaHiroyuki SakaiNobuo Shibasaki
    • G09G5/34G06F3/153G09G5/40G09G1/16
    • G09G5/40
    • A memory address signal for a display memory is generated from a memory address generating circuit. The memory address generating circuit has an offset register and a memory address counter in addition to a memory address register. The offset register stores an offset value corresponding to a difference between a width of the display memory and a width of a display picture in a scanning direction. The memory address counter counts up a character clock in order to deliver the memory address signal after loading a start address of each horizontal scanning line of the display picture. At the end of each horizontal scanning line, an adder adds the offset value to the memory address signal. The addition thereof is loaded into the address register as the start address of the next horizontal scanning line.
    • 从存储器地址产生电路产生用于显示存储器的存储器地址信号。 存储器地址生成电路除了存储器地址寄存器之外还具有偏移寄存器和存储器地址计数器。 偏移寄存器存储对应于显示存储器的宽度和扫描方向上的显示画面的宽度之间的差的偏移值。 存储器地址计数器计数字符时钟,以便在加载显示图像的每个水平扫描行的开始地址之后传送存储器地址信号。 在每个水平扫描线的末端,加法器将偏移值与存储器地址信号相加。 其添加被加载到地址寄存器中作为下一个水平扫描线的起始地址。