Browse Prior Art Database

Projection Means for Displaying Horizontal and Vertical Images

IP.com Disclosure Number: IPCOM000117074D
Original Publication Date: 1995-Dec-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 104K

Publishing Venue

IBM

Related People

Mosley, J: AUTHOR [+2]

Abstract

Disclosed is a digital camera having a projection display with a rectangular viewing area which is pivotable along a short edge to facilitate viewing a vertical image and along a long edge to facilitate viewing a horizontal image. The display is used both to assist in aiming the camera and to display and review previously stored images.

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Projection Means for Displaying Horizontal and Vertical Images

      Disclosed is a digital camera having a projection display with
a rectangular viewing area which is pivotable along a short edge to
facilitate viewing a vertical image and along a long edge to
facilitate viewing a horizontal image.  The display is used both to
assist in aiming the camera and to display and review previously
stored images.

      The Figure is an isometric view of the camera.  The upper
surface of housing 10 includes a hinged plate 12, which is rotated
upward to unfold an image projection system within housing 10.  The
projection system includes an LCD (Liquid Crystal Display) panel 14,
on which the image is formed, a projection lamp 16 for backlighting
the LCD panel, a projection lens 17 for projecting the image, and a
translucent screen 18.  In the folded condition shown, these elements
are too close together to function as a projection system; as the
hinged plate 12 is rotated upward, these elements move into place so
that an image on LCD panel 14 is projected onto screen 18.  Both LCD
panel 14 and screen 18 are rectangular, having corresponding short
and long sides.  For example, if the camera is configured to produce
images with the aspect ratio of a conventional 35mm camera, the long
side of the image is 50 percent longer than the short side.  Images
are either vertical (portrait mode) or horizontal (landscape mode).

      When it is determined that the projection display will be used
to view vertical images, the landscape mode pivot bar 20 is slid in
the direction of arrow 22 by means of a tab 24 extending upward
through a slot 26 in the housing 10.  This movement pulls a pair of
landscape mode pivot pins 28 out of corresponding holes in landscape
mode pivot blocks 30 extending downward from hinged plate 12.  When
these pivot blocks 30 are disengaged in this way, the hinged plate 12
is rotated about portrait mode pivot pins 32, in the direction
indicated by arrow 33.  The plate 12 is pivoted upward to bring
screen 18 into a comfortable viewing angle of about 45 degrees with
the horizontal, with the narrow dimension of the image extending
along
the bottom of the screen 18, as required for viewing a vertical
image.

      Similarly, when it is determined that the projection display
will be u...