公开(公告)号：JPH05298454A

公开(公告)日：1993-11-12

申请号：JP35535792

申请日：1992-12-21

Applicant: APPLE COMPUTER

Inventor： ANSONII MASUTAASON

IPC: G09G5/00 ,  G06T1/00 ,  G06T1/60 ,  G06T5/00 ,  G06T11/00 ,  G09G5/02 ,  G09G5/39 ,  G09G5/393 ,  G06F15/72 ,  G06F15/64 ,  G06F15/66 ,  G06F15/68

Abstract: PURPOSE: To reduce the size of a display memory required for a computer system capable of making color display. CONSTITUTION: A device 16 which converts the display of color pixels of a 24-bit color format into the display of a 15-bit color format is provided with individual circuits for data indicating each component of colors and each circuit is incorporated with a device which selectively increases the values of the five highest-order bits of a value indicating each component of the colors, a device which makes the device that selectively increases the five highest-order bits generate a signal, and a device which selectively enables a device to respond to the value of the lowest-order bit in accordance with the target pattern of the pixels.

公开(公告)号：JPH05210585A

公开(公告)日：1993-08-20

申请号：JP4744691

申请日：1991-02-21

Applicant: APPLE COMPUTER

Inventor： ANSONII MASUTAASON ,  MAAKU KURIYUUGAA

IPC: G06F12/00 ,  G06F12/08 ,  G06F12/10

Abstract: PURPOSE: To provide a cache managing system for improving the operating speed of computer system. CONSTITUTION: This is a cache managing system of computer system equipped with a central processor 12, main memory 15, and cache memory 18, and this system is provided with a storage managing device 32 which transfers the block of the information of a page size, device 37 which reads information from the main memory, device 38 which writes information in the cache memory, and device 34 which duplicatedly generated the writing of the information in the cache memory during the reading of the information from the main memory.