Electrical computers and digital processing systems: support – Digital data processing system initialization or configuration
Reexamination Certificate
2000-04-13
2003-06-10
Gaffin, Jeffrey (Department: 2182)
Electrical computers and digital processing systems: support
Digital data processing system initialization or configuration
C713S152000, C709S224000, C710S062000
Reexamination Certificate
active
06578140
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to desktop computers and, more specifically, to desktop computers sharing components and having divergent operating systems, hard drive(s) and memory for the expressed purpose of segregating the day to day data processing functions and files from access to the Internet and downloading information and e-mail therefrom.
It is the scope of the present invention to incorporate the advantages of two systems without having two desktop computers. The desktop computer referred to in this application would be a computer having a case, power supply, motherboard, disk drive, disk drive interface, monitor, keyboard and can additionally include mouse, printer and cd-rom like devices.
2. Description of the Prior Art
There are other electronic device designed for segregated or backup data processing. Typical of these is U.S. Pat. No. 4,747,040 issued to Blanset on May 24, 1988.
Another patent was issued to Blitz et al. on Jul. 9, 1996 as U.S. Pat. No. 5,535,399. Yet another U.S. Pat. No. 5,802,297 was issued to Engquist on Sep. 1, 1998. Another patent was issued to Ohran et al. on Sep. 22, 1998 as U.S. Pat. No. 5,812,748 and still yet another was issued on Dec. 8, 1999 to Walker as U.S. Pat. No. 5,848,230.
U.S. Pat. No. 5,535,399
Inventor: Martin C. Blitz et al.
Issued: Jul. 9, 1996
Disclosed is a solid state disk drive, including a volatile, electronic RAM, memory and a non volatile, magnetic disk. The drive continuously saves unique data stored in the memory back to the disk. Additionally, the drive includes a number of tables and bit fields, in both volatile electronic memory and disk, for generally keeping track of what data has been restored from disk to memory, what data in the memory has been modified since it was restored from disk, and what modified data in the memory has been saved back to disk. In the event of a primary power outage, the drive first saves the volatile tables onto disk, and then saves the volatile, modified data onto disk, while using auxiliary power. If, however, auxiliary power is lost before any or all of the modified data is saved on disk, the saved tables provide information which enables the drive to distinguish the valid from the invalid data on disk.
U.S. Pat. No. 4,747,040
Inventor: David R. Blanset
Issued: May 24, 1988
The UNIX.RTM. and MS-DOS.RTM. operating systems are supported in a multi-tasking computer. At the heart of the computer is a microprocessor having protected and non-protected modes. The computer includes special-purpose hardware which prevents the MS-DOS system and its applications, which execute in the non-protected mode, from interfering with the UNIX system and its applications, which execute in the protected mode. In particular, this hardware monitors addresses generated by the computer and, by selectively inhibiting the associated control pulses, prevents the MS-DOS system from, for example, writing in UNIX-system-allocated memory, or accessing I/O devices that the UNIX system is currently using. In addition, a context switching feature is provided whereby the user can select, via a keyboard operation, to have displayed on the computer video monitor at any given time the image generated from the current UNIX system screen data or the image generated from the current MS-DOS system screen data.
U.S. Pat. No. 5,802,297
Inventor: James D. Engquist
Issued: Sep. 1, 1998
A cache only client-server configuration which provides the performance benefits of “dataless” client operation with the administrative efficiencies of a “diskless” client-server configuration. Utilizing cache only clients, the performance of stand-alone systems can be approximated utilizing a relatively small disk drive as a local data cache. The cache only clients may be considered as interchangeable units in that they hold no critical data and any data held on the local disk is a “clone” of the master copy held on the server. System configuration, administration and maintenance costs are dramatically reduced since software installation, distribution and backup may be managed at the server.
U.S. Pat. No. 5,812,748
Inventor: Richard S. Ohran
Issued: Sep. 22, 1998
A method for providing rapid recovery from a network file server failure through the use of a backup computer system. The backup computer system runs a special mass storage access program that communicates with a mass storage emulator program on the network file server, making the disks (or other mass storage devices) on the backup computer system appear like they were disks on the file server computer. By mirroring data by writing to both the mass storage of the file server and through the mass storage emulator and mass storage access program to the disks on the backup computer, a copy of the data on the file server computer is made. Optionally, selected portions of the data read through the mass storage emulator program can be altered before being returned as the result of the read operation on the file server. In the event of failure of the file server computer, the backup computer can replace the file server, using the copy of the file server's data stored on its disks. A single backup computer can support a plurality of file server computers. Unlike other redundant file server configurations, this method does not require the backup computer system to be running the file server operating system.
U.S. Pat. No. 5,848,230
Inventor: Mark S. Walker
Issued: Dec. 8, 1998
A highly reliable computer memory storage system that is divided into subsystems, each of which is provided in triplicate: a primary subsystem, a backup subsystem and a spare subsystem. Upon detection of a non-recoverable failure in a primary subsystem, the backup subsystem substantially immediately assumes the tasks of the primary subsystem while the spare subsystem is integrated into the operation of the computer memory storage system. The triple replication of all subsystems and mechanisms for detecting failures in at least the primary and secondary subsystems provides an overall memory system which is highly reliable and substantially never requires servicing. In an alternative embodiment, three subsystems can share a load equally, for example a cooling or power supply load requirement. Upon failure, of any one or two of such three redundant subsystems, the remaining subsystems(s) is built with sufficent extra capacity that remaining subsystem(s) can still supply the total power or cooling requirements of the system.
While these electronic devices may be suitable for the purposes for which they were designed, they would not be as suitable for the purposes of the present invention, as hereinafter described.
SUMMARY OF THE PRESENT INVENTION
With the advent of computers, data processing such as word processing, spreadsheets and graphic design were the mainstay of personal computer manufacturers and impetus for many people to invest in a PC. These machines proved to be more than adequate for these tasks and software developers were encouraged to expand the software capabilities of the personal computer, which was done with the addition of personal finance, interior design, landscaping and personal correspondence software, to name a few. All of this development was centered around faster processors, more disk space and bigger monitors.
With the advent of the Internet, the personal computer has transcended well beyond our wildest dreams. To the point that the government levies taxes on communications to provide Internet access to every public institution.
While the Internet is truly remarkable and for good or bad has become firmly intrenched in our culture, it has given rise to a subculture which expends a great effort in generating snippets of code, which when download into a personal computer can cause great harm to the contents therein. The present paranoia over the mischievous to malicious software, commonly referred to as computer virus, while effecting a relative small number of computers, has caused a regression in the exchange of information.
With
Gaffin Jeffrey
Kroll Michael I.
Park Ilwoo
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