Method and apparatus for employing a buffer memory to allow low resolution video data to be simultaneously displayed in window fashion with high resolution video data,申请号US19870128069-传众专利搜索

Method and apparatus for employing a buffer memory to allow low resolution video data to be simultaneously displayed in window fashion with high resolution video data

申请公布号：US5065346(A)

申请号：US19870128069

申请日期：1987.12.03

申请公布日期：1991.11.12

申请人：

SONY CORPORATION

发明人：KAWAI, TOSHIHIKO;TOBISHIMA, TAKAAKI

分类号：G09G5/00;G06F3/14;G09G1/02;G09G1/16;G09G5/14;G09G5/36;G09G5/391

主分类号：G09G5/00

摘要：A low resolution to high resolution display system arranged such that a low resolution video signal from a personal computer is written in a memory plane in response to an address based on a clock signal produced from the personal computer side, a switching circuit is provided in a video signal path of a high resolution display apparatus for switching between the memory plane and the video signal produced by the high resolution display apparatus and the memory plane is read by an address based on the clock signal of the display apparatus produced during a display window period, whereby the video signal read from the memory plane is supplied through the switching circuit to the video signal path of the display apparatus.