Abstract:
A system for teleconferencing presentations by a presenter is disclosed, including a cart forming a podium, a computer in or on the cart, a touch panel interface with the computer, positioned on the cart, visible to the presenter; and a CODEC operationally attached to the computer. One arrangement includes a first camera for taking a video image of the presenter, mounted on the cart, and a second camera, mounted on the cart, for taking images of documents. In one preferred arrangement, the system also includes a projector associated with the cart and a screen. The projector projects images from the first or second camera to the screen.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention relates generally to the field communications and in particular to the field of videoconferencing.  
           [0003]    2. Description of Related Art  
           [0004]    Videoconferencing has been performed using cumbersome equipment. The traditional videoconferencing equipment has been, one or two video monitors on carts with a video CODEC, microphones, speakers, camera. Optional cameras and devices that allow computer images to be displayed may be added as well. To move and operate this device requires that the user move one or two carts of equipment. The user must then position himself away from the equipment and operate it by a control that would be separate from the equipment. If the user wanted to attach another device to the equipment such as a document camera, then the user must attach the device and place the device on some surface or alternatively supply another cart.  
         SUMMARY OF THE INVENTION  
         [0005]    This invention allows the user to move and operate all equipment while it remains on one cart. The advantage makes for a more portable videoconferencing device which can be well suited for distance education.  
           [0006]    In a preferred embodiment of the invention we see several different components. A CODEC sends and receives compressed video images. In the preferred embodiment, the CODEC is internal to a PC. This allows a user to control the functionality of the CODEC using the computer. Among the features that the control can perform are, volume control, camera selection and control, VCR selection, microphone muting, speaker muting, transmission muting. A Display is a touch panel interface to the PC for control of the programs that are executed in the PC and for control of the CODEC. Also attached to the computer is a keyboard and mouse. In a preferred embodiment, the keyboard and mouse are attached using an infrared link. Speakers being mounted allows the PC to audio to be heard as well as the audio from the videoconference or the VCR. A VCR can record an ongoing videoconference as well as playback a VCR recording for local or local and remote viewing. The first camera is designed to video the audience or the instructor. The camera is attached from a chord emerging from the cart and is mounted on a Tripod. The cord is of sufficient length to place the camera next to a screen. The second camera is a high quality document camera. The camera is inside a drawer in the system in one embodiment. A microphone  24  can be located away from the main videoconferencing unit. The microphone and camera are tethered to the unit by the cables in this embodiment but the either or both can be connected by any other means. The videoconference can be viewed by using the projector to project an image on the screen. Optionally a second projector can be added and even a third (not shown). With three projectors, during a conference, the distant end can always be seen as well as the local end and an any data being shared. As the projector quantity is reduced, the functionality of seeing the distant end, local end and the data can still be accomplished with use of picture-in-picture as well as use of putting the video picture on the data window.  
           [0007]    A cart allows for easy transport of all the equipment from one location to another. The cart is designed as a teacher&#39;s podium. The positioning of the equipment allows the system to be used without removing it from the cart. The projector(s) is on a swivel to allow it to be moved from being over the podium to being away from the speakers control arena. The swivels allow the projectors to be moved and adjusted to different heights so that the image can be projected to any position. There is control and space in the work area that allow the instructor to run the equipment from this location.  
           [0008]    Portability is further enhanced in the preferred embodiment by use of videoconferencing over computer network rather than traditional telco interfaces, those being T1, V.35 or RS-422. This allows the equipment to be moved into rooms where no special preparation is required for videoconferencing.  
           [0009]    These and other objects, advantages and features of this invention will be apparent from the following description taken with reference to the accompanying drawing, wherein is shown a preferred embodiment of the invention. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWING  
       [0010]    [0010]FIG. 1 is a diagrammatic representation of a videoconferencing system according to the present invention; and  
         [0011]    [0011]FIG. 2 is a front perspective view of an alternative embodiment of a videoconferencing system according to the present invention. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0012]    Referring now to the drawing, and in particular to FIG. 1, in a preferred embodiment of the invention, referred to generally by reference numeral  10 , we see several different components. A CODEC  11  sends and receives compressed video images. CODEC  11  is internal to a PC. This allows a user to control the functionality of the CODEC using the computer. Among the features that the control can perform are, volume control, camera selection and control, VCR selection, microphone muting, speaker muting, transmission muting. A Display  12  is a touch panel interface to the PC for control of the programs that are executed in the PC and for control of the CODEC. Also attached to the computer is a keyboard and mouse  13 . In a preferred embodiment, the keyboard and mouse  13  are attached using an infrared link  14 . Speakers  15 , being mounted, allow the PC to audio to be heard as well as the audio from the videoconference or a VCR  16 . VCR  16  can record an ongoing videoconference as well as playback a VCR recording for local or local and remote viewing. A first camera  17  is designed to video the audience or the instructor. Fisrt camera  17  is attached from a chord emerging from the cart and is mounted on a tripod  18 . The cord is of sufficient length to place the first camera next to a screen. A second camera  19  is a high quality document camera. The second camera is inside a drawer in the system. A microphone  20  can be located away from the main videoconferencing unit. The microphone and the second camera are tethered to the unit by the cables in this embodiment but the either or both can be connected by any other means. Two cameras are shown in this preferred embodiment, although more can be easily achieved.  
         [0013]    The videoconference can be viewed by using a projector  21  to project an image on a screen  22 . Optionally a second projector can be added and even a third (not shown). With three projectors, during a conference, the distant end can always be seen as well as the local end and an any data being shared. As the projector quantity is reduced, the functionality of seeing the distant end, local end and the data can still be accomplished with use of picture-in-picture as well as use of putting the video picture on the data window.  
         [0014]    A cart  23  allows for easy transport of all the equipment from one location to another. The cart is designed as a teacher&#39;s podium. The positioning of the equipment allows the system to be used without removing it from the cart. The projector(s) is on a swivel to allow it to be moved from being over the podium to being away from the speakers control arena. The swivels allow the projectors to be moved and adjusted to different heights so that the image can be projected to any position. There is control and space in the work area that allow the instructor to run the equipment from this location.  
         [0015]    Portability is further enhanced in the preferred embodiment by use of videoconferencing over computer network rather than traditional telco interfaces, those being T1, V.35 or RS-422. This allows the equipment to be moved into rooms where no special preparation is required for videoconferencing.  
         [0016]    Referring now to FIG. 2, a second preferred embodiment of the invention is referred to generally by reference numeral  30 . A cart  43  A CODEC  31 , not shown, sends and receives compressed video images. CODEC  31  is internal to a PC located inside the cart. A Display  32  is a touch panel interface to the PC for control of the programs that are executed in the PC and for control of the CODEC. Also attached to the computer is a keyboard and mouse  33 , not shown. In a preferred embodiment, the keyboard and mouse  33  are attached using an infrared link  34 , not shown. Speakers  35  are mounted on the audience side of the cart, allowing the PC audio to be heard as well as the audio from the videoconference or a VCR  36 , located in the cart. VCR  36  can record an ongoing videoconference as well as playback a VCR recording for local or local and remote viewing. A first camera  37  is designed to video the audience or the instructor. Fisrt camera  37  is attached from a chord emerging from the cart and is mounted on a cart handle  38 . A second camera  39  is a high quality document camera. The second camera is mounted on top of the cart. A microphone  40  can be located away from the cart or included on it, such as part of first camera  37 . Two cameras are shown in this preferred embodiment, although more can be easily achieved.  
         [0017]    The videoconference can be viewed by using a projector  41 , not shown, to project an image on a screen  42 , not shown, in a manner shown in the prior embodiment. Optionally a second projector can be added and even a third (not shown). With three projectors, during a conference, the distant end can always be seen as well as the local end and an any data being shared. As the projector quantity is reduced, the functionality of seeing the distant end, local end and the data can still be accomplished with use of picture-in-picture as well as use of putting the video picture on the data window.  
         [0018]    A cart  43  allows for easy transport of all the equipment from one location to another. The cart is designed as a teacher&#39;s podium. The positioning of the equipment allows the system to be used without removing it from the cart. The projector(s) is on a swivel to allow it to be moved from being over the podium to being away from the speakers control arena. The swivels allow the projectors to be moved and adjusted to different heights so that the image can be projected to any position. There is control and space in the work area that allow the instructor to run the equipment from this location.  
         [0019]    Advantages of the system of this invention over other previously designed systems includes:  
         [0020]    1. Podium design vs. monitor cart design. The present invention puts the monitor and camera on the cart. Going to a projector system and properly engineering the cart offers a portable podium. The advantages to this are clear, no need for another cart to serve as a podium to contain document cameras and VCRs, Easy setup, with tethered or wireless connection, there is no rewiring as the device moves. Fewer components to move when relocating this from one place to another.  
         [0021]    2. Single cart portability for multiple projections. Because we are using projectors we can display multiple videos from the same podium.  
         [0022]    3. Ease of movement, because of the optional use of standard TCP/IP connectivity rather than the telco connectivity that has been state of the art, this can go into classrooms that have not previously been defined for videoconferencing  
         [0023]    4. Optional Active Matrix display, allowing a reduction of the tabletop real estate that can be used. And allowing the PC monitor to double as a control panel allows both PC functionality as well as videoconference control. This is rare but not unknown in the art.  
         [0024]    5. Muliple use. Because of the integrated PC, this system can also be a teaching or presenting system without videoconferencing.  
         [0025]    In short the main asset for the design is the integration as a podium rather than as a monitor cart. This makes a total teaching platform much more portable than ever before. This is accomplished by an innovative cart design, the use of projectors rather than monitors, and easy access to removing and deploying the conference room camera as well as the microphones. When this is rolled into a room, in the preferred embodiment, all the instructor has to do to teach a class is, plug in power, plug into a standard computer network connection, set up the tripod for the camera, move the microphone(s) out, swivel out the projectors, slide out the document camera (if required) and teach.  
         [0026]    From the foregoing it will be seen that this invention is well adapted to attain all of the ends and objectives hereinabove set forth, together with other advantages which are inherent to the apparatus.  
         [0027]    It will be understood that certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations. This is contemplated by and is within the scope of the claims.  
         [0028]    As many possible embodiments may be made of the invention without departing from the scope thereof, it is to be understood that all matter herein set forth or shown in the figures of the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.