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Display headset

  • US 5,900,849 A
  • Filed: 04/24/1996
  • Issued: 05/04/1999
  • Est. Priority Date: 05/25/1995
  • Status: Expired due to Fees
First Claim
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1. A display apparatus comprising an image data processor and a head mounted display (HMD) to be worn by a user, the apparatus including:

  • a motion detector arranged to detect positional changes of the HMD with respect to its physical environment; and

    an image generator coupled thereto and operable to generate images of a virtual environment from a user viewpoint, with the user viewpoint changing in response to positional changes of the HMD, and to display the images on a display screen of the HMD;

    characterised in that limits on extents of HMD movement in at least one direction within the physical environment are specified to the motion detector, and the image data processor is further operable to indicate an alarm condition to the user of the HMD when at least one of the limits is exceeded.

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