Lookahead I/O device control subsystem

Details Lookahead I/O device control subsystem Lookahead I/O device control subsystem

1982-04-30

1985-05-14

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 304

Patent

active

045176418

ABSTRACT:
An I/O device control subsystem for controlling issuance of commands to one I/O device while it is doing I/O device to I/O device data transfers with another I/O device. The I/O device control subsystem has a timer for indicating current time. The time required to write the transferred data, known at the time the data transfer command is issued, is added to the current time. Then, when a command is issued to the first I/O device while the other I/O device is writing the transferred data, the time required for executing that command is determined as well as the time remaining for completion of the write operation and if the time required for execution of the new command is less than the remaining time, the new command is allowed to be executed.

REFERENCES:
patent: 4126895 (1978-11-01), Weemaes et al.
patent: 4200928 (1980-04-01), Allan
patent: 4262331 (1981-04-01), Freeland et al.
patent: 4392196 (1983-07-01), Glenn et al.
Overlapping Data Streaming and Concurrent Read/Write References Within a Storage Subsystem by C. Kinberg, et al., IBM Technical Disclosure Bulletin, vol. 24, No. 4, Sep. 1981, pp. 1947,1948.

Affiliated with

Also associated with

Rating

Lookahead I/O device control subsystem does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lookahead I/O device control subsystem, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lookahead I/O device control subsystem will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-771887