Programmable control device

Patent 5579488 Issued on November 26, 1996. Estimated Expiration Date:

March 13, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Electronic controller having a detachable front panel
Patent #: 4497038
Issued on: 01/29/1985
Inventor: Diepold-Scharnitzky , et al.

Battery-powered computer interface with manual and automatic battery disconnect circuit
Patent #: 4667289
Issued on: 05/19/1987
Inventor: Yoshida , et al.

Computer system comprising a data, address and control signal bus which comprises a left bus and a right bus
Patent #: 4695944
Issued on: 09/22/1987
Inventor: Zandveld , et al.

Terminal for communication with a remote data processing system
Patent #: 4747073
Issued on: 05/24/1988
Inventor: Desbois , et al.

Digital control system for electronic apparatus
Patent #: 4805085
Issued on: 02/14/1989
Inventor: Mogi , et al.

Hierarchical multiple bus computer architecture
Patent #: 4912633
Issued on: 03/27/1990
Inventor: Schweizer, et al.

Picture information composite system
Patent #: 4942391
Issued on: 07/17/1990
Inventor: Kikuta

Computer network for real time control with automatic fault identification and by-pass
Patent #: 5086499
Issued on: 02/04/1992
Inventor: Mutone

Information processing system capable of readily taking over processing of a faulty processor
Patent #: 5202980
Issued on: 04/13/1993
Inventor: Morita, et al.

Fault detection in relay drive circuits
Patent #: 5210756
Issued on: 05/11/1993
Inventor: Kummer, et al.

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Inventor

Ikeda, Keiichi

Assignee

Canon Kabushiki Kaisha

Application

No. 402977 filed on 03/13/1995

US Classes:

710/100, INTRASYSTEM CONNECTION (E.G., BUS AND BUS TRANSACTION PROCESSING)710/2Input/Output expansion

Examiners

Primary: Sheikh, Ayaz R.

Attorney, Agent or Firm

Fitzpatrick, Cella, Harper & Scinto

International Class

G06F 013/00

Foreign Application Priority Data

1991-09-09 JP

Abstract

A programmable control device has a control unit that is separated from a unit to be controlled. The control unit and the unit to be controlled are detachably connected via a connection unit. The control unit is modified to provide improved functionality while effectively using the existing hardware of the unit to be controlled. The control unit may have a card-like shape to reduce the size of the programmable control device.