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The graphic subsystem which includes RAMDACIC which is connected by the graphic bus which uses DMA and has digital video memory interface

机译:包含RAMDACIC的图形子系统,该RAMDACIC通过使用DMA的图形总线连接并具有数字视频存储接口

摘要

(57) Abstract It is connected by the graphic bus and with the graphic processor (115) is the graphic subsystem which includes RAMDAC (120) which is mounted on the separate integrated circuit tip/chip. With a certain execution example, it processes graphically and, responding to graphic command, digital image information rendering in order to remember digital image information in memory, it is constituted. RAMDAC IC includes conversion unit (133), conversion unit includes color mapping unit (132), and the digital - analog transmitter (134) converts expression of digital image information to the analog signal of one and or more in order to drive video indication, is constituted. Graphic subsystem furthermore includes the direct memory access (DMA) controller (123) which is mounted on the 2nd integrated circuit tip/chip. The DMA controller forms the read-out demand in order to remove the digital image information which is remembered in memory in order to be able to give to conversion unit digital image information, is constituted. The DMA controller is formed, forming entry cycle, the digital RGB indicatory data which it receives from color mapping unit in conversion unit, being given, in order to be remembered in the territory of specification of memory, furthermore. With another execution example, as for graphic subsystem, it is possible to include the digital video interface (185) which is mounted on the 2nd integrated circuit tip/chip. Digital video interface is formed, in order to give the digital video output which the digital RGB indicatory data receiving and is encoded to the digital video output port from color mapping unit. Digital video interface is formed the digital video which is encoded receiving and giving the digital display data which is decoded from the digital video input port, in order to remember in the device of digital VCR and the like, furthermore.
机译:(57)通过图形总线连接,图形处理器(115)是图形子系统,其包括RAMDAC(120),RAMDAC(120)安装在单独的集成电路尖端/芯片上。以某个执行示例为例,它进行图形处理,并响应图形命令,对数字图像信息进行渲染,以便将数字图像信息记住在存储器中。 RAMDAC IC包括转换单元(133),转换单元包括颜色映射单元(132),并且数模发送器(134)将数字图像信息的表达转换为一个或多个模拟信号,以驱动视频指示,构成。图形子系统还包括直接存储器访问(DMA)控制器(123),该控制器安装在第二个集成电路头/芯片上。 DMA控制器构成读出需求,以便去除在存储器中记住的数字图像信息,以便能够将数字图像信息提供给转换单元。此外,形成DMA控制器,形成进入周期,给出其从转换单元中的颜色映射单元接收到的数字RGB指示数据,以便在存储器的规格范围内被记住。在另一个执行示例中,对于图形子系统,可以包括安装在第二集成电路头/芯片上的数字视频接口(185)。形成数字视频接口,以提供数字RGB指示数据接收并从颜色映射单元编码到数字视频输出端口的数字视频输出。此外,为了在数字VCR等设备中记忆,形成了数字视频接口,该数字视频接口被编码以接收并给出从数字视频输入端口解码的数字显示数据的数字视频。

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