Parallel test circuit for semiconductor memory device |
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I/O module for a serial multiplex data system with a programmable communication module selector |
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Test-facilitating circuit for information processing devices |
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Integrated test circuit |
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Transparently gathering a chips multiple internal states via scan path and a trigger |
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Method and apparatus for dynamically testing electrical interconnect |
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System and method for saving the state for advanced microprocessor operating modes |
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Hydraulic reservoir for tandem master cylinder |
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Semiconductor device |
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Graphical representation of computer network topology and activity
| Details |
Inventors: Jacoby, Ronald;
Assignee: Silicon Graphics, Inc. (Mountain View, CA)
Primary Examiner: Feild; Joseph H.
Assistant Examiner:
Attorney, Agent or Firm: Blakely, Sokoloff, Taylor & Zafman
A means and method is disclosed for displaying an image on a display screen graphically representing the topology and information transfer activity occurring on a computer network. One host computer on the network denoted a network monitor gathers information about the topology and traffic on the network. A display image is generated depicting a substantially circular arrangement of host computers and/or sub-networks of host computers comprising the network. Color-coded, dashed, various width, or shaded line segments are added to the display image representing traffic (information transfer activity) occurring on the network between source and destination host computers. Line segments between communicating hosts are coded depending upon the volume of information being transferred. Line segments are removed when information flow between a pair of hosts ceases. Controls are provided to configure the display of the network and to move or zoom in on a portion of the display image. |
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DETAILED DESCRIPTION The present invention provides a means and a method for graphically displaying on a display screen the topology and information transfer activity occurring on a computer network. The present invention enables a network administrator or a network user to visually monitor activity on the network from a central vantage point. The present invention comprises an interactive computer-controlled display system including a bus for interconnecting system components, a processor, a random access memory (RAM), a read-only memory (ROM), a data storage means for storing data, a display device including a display screen, and optionally an alphanumeric input device, a cursor control device for interactively positioning a cursor on a display screen, and a signal generation device. In addition, the computer system of the present invention includes a means for connecting the computer system to a computer network. The present invention captures packets of information traversing through the network and decodes those packets of interest. When a packet is decoded, the information obtained is appended to a network data base in the memory of a monitoring computer system. The present invention then manipulates the relevant information in the data base and generates a substantially circular graphical representation of the network topology and activity as determined by the information in the packets of information decoded. The substantially circular graphical representation may be depicted as circles, ellipses, or multi-sided polygons. A graphical depiction of network activity is then displayed on the display device. The substantially circular graphical representation of the network topology and activity may represent a network comprising simply host computers or a network comprising mix of host computers and sub-networks or local area networks. Further, controls are provided for tailoring the display in order to target a particular type of information. The graphical representation provides means for color coding host computer images, network images, and information transfer activity images in order to highlight status and other information
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