Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

I/O Systems

Information-processing-system-for-sharing-internal-auxiliary-storage-device

Feedback sensor for remote receiver in a power transmission system

I claim as my invention: 1. In a power transmission system of the type in which pulse coded ...

Driver circuit for an electrical load with capability for detecting a short in the load

The embodiments of the invention in which an exclusive property or privilege is claimed are defined ...

Lamp failure indicating circuit

This invention pertains to lamp failure indicating circuits which are particularly useful in ...

Fire detection alarm system

The present invention overcomes the deficiencies of the prior art by providing a simple and ...

Trailer hitch monitor

What is claimed is: 1. An electrical circuit attachment apparatus for monitoring a connection ...

Vehicle theft detector for detecting the pulling out of a lock

An object of this invention is to provide a theft detector apparatus which overcomes the defects of ...

Variable frequency light pulser for smoke detectors

I claim: 1. A smoke detector comprising: clock means periodically producing electrical pulses ...

Semiconductor light detecting integrated circuit

An object of the present invention is to provide a semiconductor light detecting integrated circuit ...

Boiling water neutronic reactor incorporating a process inherent safety design

A PIUS boiling-water reactor is provided wherein a boiling-water reactor core is positioned within ...

Handling pool and safety water reserve for pressurized water-cooled nuclear reactor

I claim: 1. A pressurized water-cooled nuclear reactor comprising: a pressure vessel containing a ...

Information processing system for sharing internal auxiliary storage device

Details

Inventors: Shoyama, Takahiko;
Assignee: Hitachi, Ltd. (Tokyo, JP)
Primary Examiner: Ingberg; Todd
Assistant Examiner: Thomson; W
Attorney, Agent or Firm: Mattingly, Stanger & Malur, P.C.

An information processing system has first and second information processing apparatuses. The first information processing apparatus has an internal auxiliary storage device. The second information processing apparatus does not include an internal auxiliary storage device. Both information processing apparatuses have a main storage device, communication unit and auxiliary-storage-device control unit. The second information processing apparatus has an emulation mechanism for carrying out CKD-FBA format conversion to a series of CCW commands. Specifically, a command is set to access the internal auxiliary storage device and the emulation mechanism transmits the command set to the first information processing apparatus having the internal auxiliary storage device by way of the communication unit of the second information processing apparatus and a communication path.

DETAILED DESCRIPTION It is thus an object of the present invention addressing the problem of the prior art described above to provide an input/output control system that allows an embedded disk unit of an information processing apparatus to be accessed by another information processing apparatus and is capable of assuring a normal operation.
In order to achieve the object described above, according to an aspect of the present invention, there is provided an input/output control system comprising a first information processing apparatus including a central processing unit, a main storage device and an internal auxiliary storage device, and one or a plurality of second information processing apparatuses each including a central processing unit, a main storage device and a communication unit for communicating with another information processing apparatus wherein any of said second information processing apparatuses makes an access to said internal auxiliary storage device of said first information processing apparatus, said first and second information processing apparatuses each comprising an auxiliary-storage-device control unit for controlling operations to read out and write information from and into said internal auxiliary storage device wherein said auxiliary-storage-device control unit of any of said second information processing apparatuses: emulates an auxiliary storage format controlled by one command or a plurality of commands forming a series of commands stored in said main storage device employed by said secondary information processing apparatus employing said auxiliary-storage-device control unit in an auxiliary storage format executed by said auxiliary-storage-device control unit employed in said first information processing unit in order to make an access to said internal auxiliary storage device; and transmits a result of emulation to said first information processing apparatus by way of said communication unit employed by said secondary information processing apparatus employing said auxiliary-storage-device control unit

Related patents

	Driver bundle including a compressed, self-extracting, executable driver for the host processor and an adapter driver for the processor of a network adapter card A driver bundle according to the present invention includes a compressed, executable and self-extracting host driver prepended to an adapter card driver to form a single ...
	Method and system for configuring plug and play devices for a computer operating system It is an object of the present invention to provide an improved information processing system. It is another object of the present invention to provide an improved ...
	Method and apparatus for testing custom-configured software/hardware integration in a computer build-to-order manufacturing process The present embodiments include a new process referred to herein as Fully Integrated System Test (FIST). FIST takes over after the old "spray and pray" process finishes,...
	Hot swap system A method and apparatus for a non-contact hot swap system is provided. In the following description, numerous specific details are set forth in order to provide a ...
	Analog multiplexer Accordingly, the object of this invention is to provide an analog multiplexer of simple construction, which is highly accurate, has a reduced difference between the ...
	Integrated circuit in complementary circuit technology comprising a substrate bias generator We claim: 1. In an integrated circuit executed in complementary circuit technology comprising a pair of field effect transistors (T1, T2) of different channel types, ...
	Laser ablation apparatus An essential object of the present invention is therefore to provide a laser ablation apparatus which can project a laser light between a substrate capable of being ...
	Line-past insulator support system, method of assembly thereof, and clamp for use therein In FIGS. 1A and 1B, a tower or pole 10 carries an electrical conductor 12 at the other end of a horizontal line-post insulator 14 for the transmission of electric power ...
	Apparatus and method for short cycling sequences of a p-code generator A P-code generator of a Global Positioning System is provided comprising a plurality of pseudo-random number generators interconnected to generate a ranging P-code. Each ...
	Floating point division control It is, accordingly, an object of the present invention to provide an improved means and method for executing a division operation in a floating point calculation. It is ...

0.014
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved