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| Data control system in CDMA mobile communication system |
| OF PREFERRED EMBODIMENT Reference will now be made in detail to the preferred embodiments of the ... |
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| Remote telephone call notification system |
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| System and method for separating signals received by an overloaded antenna array |
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| Device including a built-in electroacoustic transducer for optimum speech reproduction |
| It is an object of the invention to preclude the afore-mentioned situation in a device of the type ... |
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| Paging message processing |
| In a first aspect of the present invention there is provided a method for processing paging ... |
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| Arrangement for improving the speech quality, especially for VoIP (Voice over IP) calls |
| OF EMBODIMENTS FIG. 1 is a schematical drawing illustrating the principle of Tandem Free Operation,... |
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Video distribution hub
| Details |
Inventors: Odryna, Victor; Gilgen, Robert L.; Desmarais, Mark A.; Mansell, Barry N.; Henry, Keith E.;
Assignee: Cybex Computer Products Corporation (Huntsville, AL)
Primary Examiner: Tung; Kee M.
Assistant Examiner:
Attorney, Agent or Firm: Nixon & Vanderhye P.C.
A video distribution hub and display method are disclosed which is capable of driving a plurality of video display monitors as a virtual monitor or monitors. The video distribution hub receives a video signal from a single head graphics card or a suitable video source which signal embodies data within a video buffer on the graphics card or at the video source. The hub processes the received video signal and stores selected data segments corresponding to selected portions of the video buffer in a plurality of frame buffers within the distribution hub. The data stored within the plurality of frame buffers is employed to drive respective video displays, such as flat panel displays or conventional CRT displays. The hub accommodates displays of different resolution. Additionally, the hub accommodates displays having either a portrait or landscape orientation. |
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DETAILED DESCRIPTION The present invention enables the provision of a multi-head virtual monitor from the perspective of a host computer via the use of one or more video distribution hubs.
Each hub receives a video signal from a standard graphics card in a PC and generates output signals appropriate for driving a plurality of video displays such as flat panel or Cathode Ray Tube (CRT) video displays.
The video displays may be oriented either horizontally, in landscape mode, or vertically, in portrait mode, or in a combination of landscape and portrait arrangements.
Additionally, a single hub can drive displays of differing resolutions as well as head orientations.
The hub, in combination with host software, can be automatically reconfigured when a display is swapped out to accommodate the newly substituted display.
In a preferred embodiment, the hub is particularly adapted for driving a plurality of flat panel displays such as active matrix flat panel displays, dual scan passive flat panel displays, or a combination of such displays.
More particularly, in a preferred embodiment, a video graphics system in accordance with the present invention includes a video graphics adapter having a host interface for coupling the video graphics adapter to a host computer such as a personal computer, workstation, microcomputer, minicomputer, mainframe or the like, and an output for driving a video data signal, such as an RGB analog video signal.
The video graphics adapter includes an "oversize" display buffer which has a buffer capacity greater than that necessary to drive a single video display.
The video graphics system further includes a video distribution hub which has a video input interface for receiving a video signal, such as the RGB analog video signal from the video graphics adapter, and a plurality of output ports for driving associated displays.
The video distribution hub receives the video signal from the video graphics adapter at the video input interface of the video distribution hub and, in the case where the received signal is an analog signal, applies the signal to an analog to digital converter (ADC) to generate digital signals corresponding to red, green and blue data signals
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