公开(公告)号：US5491498A

公开(公告)日：1996-02-13

申请号：US152624

申请日：1993-11-15

申请人： Ryo Koyama ,  Niall M. Bartlett

发明人： Ryo Koyama ,  Niall M. Bartlett

IPC分类号： G09G5/395 ,  H04N5/60 ,  G09G1/14

CPC分类号： H04N5/602 ,  G09G5/395

摘要： An graphics/audio controller system supports the delivery of digital audio signals in a graphics controller architecture so that much of the video circuitry can also be used to process audio information. The graphics/audio controller may be implemented to accommodate either asynchronous or synchronous audio access. A memory control unit is incorporated to receive audio and video data request signals and to correspondingly access the required data from a memory section. Digital audio and video signals are provided at an output bus of the memory section and are converted to analog signals by one or more digital to analog converters. As a result of the graphics/audio controller system, efficient audio reproduction is supported while minimizing hardware requirements. In addition, the overall size and cost of the system is minimized.

摘要翻译： 图形/音频控制器系统支持以图形控制器架构传送数字音频信号，使得许多视频电路也可用于处理音频信息。 可以实现图形/音频控制器以适应异步或同步音频访问。 并入存储器控制单元以接收音频和视频数据请求信号并相应地从存储器部分访问所需数据。 数字音频和视频信号被提供在存储器部分的输出总线处，并被一个或多个数模转换器转换成模拟信号。 作为图形/音频控制器系统的结果，支持高效的音频再现，同时最小化硬件要求。 此外，系统的总体尺寸和成本最小化。