Data processing: measuring – calibrating – or testing – Measurement system – Temperature measuring system
Reexamination Certificate
1998-11-09
2001-10-16
Hoff, Marc S. (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Temperature measuring system
C702S130000, C710S108000, C710S120000
Reexamination Certificate
active
06304831
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention generally relates to personal computers (PCs) and even more particularly relates to a network of personal computers having alarm functions. The terms computer, personal computer, and PC as used herein shall be construed to include all types of computers, including mini computers, work stations, portable computers, and desktop computers; the term personal computer is merely exemplary of the various other types.
Many companies that have a complex network of connected PCs often find it critical to their daily operations to maintain full use of such PCs. It may be a serious problem to a company that uses networked PCs for a wide variety of functions if just one of these networked PCs fails. Consequently, various approaches have been used in the past to reduce the exposure to problems caused by failures of networked PCs. Alarm functions have been included in PCs to alert PC operators and service personnel of situations that might indicate a potential future failure. These situations can include things such as CPU and cabinet temperature, fan speeds, and voltage levels, etc.
Service personnel can remotely monitor and control various problems with PCs on the network. One of the methods of remotely monitoring has been to use the Simple Network Management Protocol (SNMP) communication on the PC's normal communication network. While this has several beneficial aspects, it has some drawbacks as well. First of all, the use of an SNMP approach on the PC's normal communication network requires that the system microprocessor be operational; i.e. If a general fault error or other serious error has occurred, then the monitoring function is often unable to be remotely usable.
Consequently, there exists a need for improved network PC monitoring capabilities.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a robust monitorable networked PC.
It is a feature of the present invention to include an “out-of-band” communication path for providing PC health information.
It is an advantage of the present invention to achieve a reliable and independent path of PC health information.
It is another object of the present invention to provide remote switching of the PC on/off switch.
It is another feature of the present invention to include an alarm function having an independent processor, not necessarily under the direct control of the system processor.
It is another advantage of the present invention to have an operable alarm/remote switching system under conditions when the PC system processor is either off or in need of resetting, etc.
The present invention is a method and apparatus for providing PC alarm functions to a remote location which is designed to satisfy the aforementioned needs, provide the previously stated objects, include the above-listed features, and achieve the already articulated advantages. The invention is carried out in a “system processor-less” approach in the sense that the PC system microprocessor is not necessarily directly in control of the alarm function and its remote reporting ability.
Accordingly, the present invention is a PC alarm system having a microprocessor, independent of necessary direct control of the PC system microprocessor, and an independent LON bus communication path for communicating PC health information to another PC.
REFERENCES:
patent: 4918690 (1990-04-01), Markkula, Jr. et al.
patent: 4941143 (1990-07-01), Twitty et al.
patent: 5182746 (1993-01-01), Hurlbut et al.
patent: 5297143 (1994-03-01), Fridrich et al.
patent: 5325491 (1994-06-01), Fasig
patent: 5426739 (1995-06-01), Lin et al.
patent: 5781747 (1998-07-01), Smith et al.
patent: 5822551 (1998-10-01), Crane, Jr. et al.
Patent application Serial No. 09/188,621, filed Nov. 9, 1998, “Background of the Invention”, pp. 3-4.
Busch Eric
Coats Alan
Jensen Chris
Medin David
Murdock Doug
Bui Bryan
Crystal Group Inc.
Hoff Marc S.
Simmons Perrine Albright & Ellwood PLC
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