KVM switch for controlling computers and method thereof
First Claim
1. In a system for connecting a console device to a plurality of computers, a graphic user interface menu generating apparatus connected between the console device and the plurality of computers, the apparatus comprising:
- an image capture device disposed between the console device and the plurality of computers for capturing a plurality of first video signals, each first video signal originating from one of the plurality of computers, to generate a plurality of preview images for the corresponding computers;
a memory for pre-storing the preview images generated by the image capture device in a form of static pictures;
a menu generating unit for generating menu data;
a video signal generator for generating a second video signal based on the menu data and the plurality of preview images pre-stored in the memory; and
a first switching device for outputting the second video signal or one of the plurality of first video signals to the console device.
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Abstract
A system for connecting a console device to computers comprising a graphic user interface menu apparatus for controlling the computers. The system comprises a user-side circuit, a central crosspoint switch, a plurality of computer-side circuits, a menu generating unit and a first switching device. The user-side circuit coupled to the console device receives electronic signals produced by the keyboard and cursor control device and creates a data packet. The central crosspoint switch is coupled to the user-side circuits, receives the data packets and routes the data packets. The computer-side circuits coupled to the central crosspoint switch and the computers receive the data packets from the central crosspoint switch for supplying the data packets to the computers. The menu generating unit generates a menu to be displayed. The first switching device alternately outputs a video signal of the menu data and a video signal from the computers to the video monitor according to a vertical synchronization signal.
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Citations
16 Claims
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1. In a system for connecting a console device to a plurality of computers, a graphic user interface menu generating apparatus connected between the console device and the plurality of computers, the apparatus comprising:
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an image capture device disposed between the console device and the plurality of computers for capturing a plurality of first video signals, each first video signal originating from one of the plurality of computers, to generate a plurality of preview images for the corresponding computers; a memory for pre-storing the preview images generated by the image capture device in a form of static pictures; a menu generating unit for generating menu data; a video signal generator for generating a second video signal based on the menu data and the plurality of preview images pre-stored in the memory; and a first switching device for outputting the second video signal or one of the plurality of first video signals to the console device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method implemented in an apparatus connected between a plurality of computers and a console device, the method comprising:
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capturing first video signals, each first video signal originating from one of the plurality of computers, to generate a plurality of preview images for the corresponding computers; pre-storing the preview images in a memory in a form of static pictures; generating menu data; generating a second video signal based on the menu data and the plurality of preview images pre-stored in the memory; and outputting the second video signal or one of the first video signals to the console device. - View Dependent Claims (11, 12, 13, 14)
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15. A method for displaying a menu on a video monitor, comprising:
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(a) receiving a first video signal from a video source, the first video signal including a first vertical synchronization signal; (b) generating a second video signal representing a menu image, the second video signal being generated based on a second vertical synchronization signal which is derived from the first vertical synchronization signal; and (c) alternately outputting an entire frame of the first video signal and an entire frame of the second video signal to the video monitor according to a third vertical synchronization signal solely without regard to a horizontal synchronization signal, the third vertical synchronization signal being derived from the first vertical synchronization signal. - View Dependent Claims (16)
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Specification