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    • 124. 发明授权
    • Display control device
    • 显示控制装置
    • US5610622A
    • 1997-03-11
    • US309413
    • 1994-09-20
    • Hiroshi TakedaShigeaki YoshidaKoyo Katsura
    • Hiroshi TakedaShigeaki YoshidaKoyo Katsura
    • G09G5/18G09G5/12G09G1/08
    • G09G5/12
    • A CRT (cathode ray tube) controller for controlling one CRT device in an interlace mode has a synchronizing circuit of bi-directional construction, in order to make possible synchronous operation of the CRT controller with other circuits (other CRT controllers or a TV system). When the CRTC is used as a master circuit of a CRT display system, a synchronizing signal is derived from the synchronizing circuit in synchronization on with a count signal of a vertical scanning counter and an output of an interlace controller of the CRTC, and is supplied to a synchronizing terminal of the other CRTCs. Scanning counters and a flip-flop for controlling an interlace operation of the other CRTCs are reset to their initial state in synchronization with the synchronizing signal. When the CRTC is used as a slave circuit, scanning counters and a flip-flop of the CRTC are reset to their initial state in synchronization with the external synchronizing signal.
    • 用于以隔行模式控制一个CRT器件的CRT(阴极射线管)控制器具有双向结构的同步电路,以便使CRT控制器与其他电路(其它CRT控制器或TV系统)可以同步操作, 。 当CRTC用作CRT显示系统的主电路时,根据垂直扫描计数器的计数信号和CRTC的隔行控制器的输出,同步信号从同步电路得到,并被提供 到其他CRTC的同步终端。 用于控制其他CRTC的隔行扫描的扫描计数器和触发器与同步信号同步地被复位到其初始状态。 当CRTC用作从电路时,与外部同步信号同步,将扫描计数器和CRTC的触发器复位到初始状态。
    • 128. 发明授权
    • Display control device
    • 显示控制装置
    • US5262767A
    • 1993-11-16
    • US727421
    • 1991-07-09
    • Hiroshi Takeda
    • Hiroshi Takeda
    • G06T11/80G09G5/393G09G1/16
    • G09G5/393
    • A CRT controller having a drawing function includes designation means to designate a predetermined area of an external memory as a reference area for tiling, and a drawing processor which transmits a display pattern in the reference area designated by the designation means, to a drawing area of the external memory. Since the CRT controller of this construction permits the use of the external memory easy of enlarging the capacity thereof for a tiling pattern, it realizes the tiling processing with a complicated tiling pattern.
    • 具有绘图功能的CRT控制器包括指定装置,用于指定外部存储器的预定区域作为平铺的参考区域;以及绘图处理器,其将指定装置指定的参考区域中的显示图案发送到绘图区域 外部存储器。 由于这种结构的CRT控制器允许使用外部存储器容易地扩大其对于平铺图案的容量,所以它以复杂的平铺图案实现了平铺处理。