Boots – shoes – and leggings
Patent
1984-12-28
1988-06-28
Harkcom, Gary V.
Boots, shoes, and leggings
G06F 1300, G11C 700
Patent
active
047543990
ABSTRACT:
An input/output control system has a control unit including a first controller connected between a channel and a data buffer for controlling the transfer of data therebetween and a second controller connected between the data buffer and a plurality of input/output devices for controlling the transfer of data therebetween. A start action of the input/output device is effected in an off-line mode from the control unit. The amount of data stored in the data buffer is checked each time the transfer of data occurs between the channel and the data buffer. In the case of a read processing, when the amount of data stored in the data buffer becomes less than a first predetermined value, data is transferred for preload from the input/output devices to the data buffer. In the case of a write processing, when the amount of data stored in the data buffer exceeds a second predetermined value, data is transferred for after-write from the data buffer to the input/output devices. Each of the first and second predetermined values is determined depending on the amount of input/output devices which are in an active state at that time. When each of the active input/output devices is allocated with m (.gtoreq.2) unit fields of the data buffer each of which has a capacity of K/(mn) where K is the whole capacity of the data buffer and n is the number of the active input/output devices, the first and second predetermined values may be K/(mn) respectively.
REFERENCES:
patent: 4410942 (1983-10-01), Milligan et al.
patent: 4500965 (1985-02-01), Gray
patent: 4509140 (1985-04-01), Cheung
patent: 4538226 (1985-08-01), Hori
patent: 4542458 (1985-09-01), Kitajima et al.
patent: 4598363 (1986-07-01), Clark et al.
patent: 4602331 (1986-07-01), Sheth
patent: 4604709 (1986-08-01), Blount et al.
Doi Takashi
Nishigaki Toru
Nonomura Miho
Yamamoto Akira
Anderson Lawrence E.
Harkcom Gary V.
Hitachi , Ltd.
LandOfFree
Data transfer control system for controlling data transfer betwe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data transfer control system for controlling data transfer betwe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data transfer control system for controlling data transfer betwe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1919405