Title:
DATA TRANSFER CONTROL SYSTEM
Document Type and Number:
Japanese Patent JPH05334221
Kind Code:
A
Abstract:
PURPOSE: To provide a data transfer control system by which a high speed data transfer and a hardware construction at a low cost can be realized by using a VRAM as a storage element.
CONSTITUTION: A network system in which an I/O group such as an LAN or a WAN is connected through a system bus, is constituted of an LAN control I/O1, WAN control I/O2, and system bus 3. The LAN control I/O1 and the WAN control I/O 2 are connected through the system bus 3 constituted of an address, control system bus 4, and data bus 5. Then, the LAN control I/O1 (WAN control I/O2) is constituted of a bus driver/receiver 11(21), VRAM 12(22), VRAM controller 13(23), LAN (WAN) interface 14(24), and CPU 15(25).
Inventors:
ENOMOTO HIROMICHI
SATO HIROSHI
ONISHI KATSUYOSHI
SATO HIROSHI
ONISHI KATSUYOSHI
Application Number:
JP14084092A
Publication Date:
December 17, 1993
Filing Date:
June 02, 1992
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G06F13/00; G06F13/38; (IPC1-7): G06F13/00; G06F13/38
Attorney, Agent or Firm:
Yamato Tsutsui