EP 0482263 A2 19920429 - Video memory system with intermediate buffer.
Title (en)
Video memory system with intermediate buffer.
Title (de)
Videospeichersystem mit einem Zwischenpuffer.
Title (fr)
Système de mémoire vidéo avec un tampon intermédiaire.
Publication
Application
Priority
US 60247990 A 19901024
Abstract (en)
A video memory system is disclosed including a video memory 38, an intermediate buffer 34, a video display control unit (VDUC) 42, and a video processing means 39. The intermediate buffer 34 is disposed between an external CPU 30 and the video memory 38 to intercept the address 31, data 32, and read/write signals 33 from the CPU. For read operations, signals to the video memory 38, and the data read therefrom travel through the buffer 34 to arrive at the CPU 30. For write operations, the intermediate buffer 34 stores the address and data signals from the CPU 30. The data is later written into the video memory 38 in response to a time slot reference signal 52. <IMAGE>
IPC 1-7
IPC 8 full level
G09G 1/16 (2006.01); G09G 5/00 (2006.01); G09G 5/39 (2006.01)
CPC (source: EP)
G09G 5/001 (2013.01); G09G 5/39 (2013.01); G09G 5/393 (2013.01); G09G 2360/121 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0482263 A2 19920429; EP 0482263 A3 19920826; CA 2031625 A1 19920425
DOCDB simple family (application)
EP 90313405 A 19901210; CA 2031625 A 19901206