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Video teleconferencing system

  • US 5,675,374 A
  • Filed: 09/02/1994
  • Issued: 10/07/1997
  • Est. Priority Date: 11/26/1993
  • Status: Expired due to Fees
First Claim
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1. A video teleconferencing system providing a video teleconference among plural participants having corresponding faces and located at respective, plural different work locations, the video teleconferencing system comprising:

  • at each work location, a respective image pick-up and processing unit having left and right image pick-up elements positioned at symmetrically displaced, oblique viewing angles to the left and right of a frontal view of the face of the respective participant and producing corresponding left and right picked-up images of the face of the participant and, further, processing the left and right picked-up images to produce, without conversion, corresponding left and right direct image outputs and, with conversion, corresponding left and right mirror image outputs;

    at each work location, a respective image display unit having left and right image display elements selectively providing left and right image displays of an individual participant, relative to and for viewing by the respective participant;

    at each work location, a respective image specifying unit specifying image outputs to be selected for display, selectively and respectively, on the left and right image display elements of the respective image display unit and in common for the image display units respectively associated with the plurality of work locations, and in accordance with selected, specific participants whose corresponding images are to be displayed, out of the plural participants of the video teleconferencing system, and in accordance with selectively displaying;

    i. the corresponding image of the specific participant, as picked-up by the left image pick-up element, on the right display element and the corresponding mirror image thereof for display on the left display element, andii. the corresponding image of the specific participant, as picked-up by the right image pick-up element, on the left display element and the corresponding mirror image thereof for display on the right display element; and

    a determination and selection unit determining the specific participants whose corresponding images are to be displayed on a respective one of the left and right image display elements, in common for the plural image display units on which the corresponding images of the respective, specific participants are to be displayed, the image specifying units correspondingly specifying the image outputs to be selected and displayed and the determination and selection unit, further, selecting and supplying the specified image outputs to the respective left and right image display elements of each image display unit of the plural different work locations for viewing by the respective, plural participants.

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