Optics: image projectors – Composite projected image
Reexamination Certificate
2011-03-15
2011-03-15
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Composite projected image
C353S025000, C345S002300, C709S225000, C715S730000, C715S736000, C455S003060, C455S151200
Reexamination Certificate
active
07905604
ABSTRACT:
A method and apparatus is provided in which a digital image is transmitted to a presentation projector resource over a wireless transmission medium using a reduced amount of transmission bandwidth by transmitting a subset of the digital image data. The subset image data may be a delta subset that represents those areas of the image that have changed since the previous transmission. The subset image data may also be a scalable vector graphics representation of the subset of the digital image. Header data is provided to further describe the subset image data. A projector discovery logic selects a suitable projector resource based on the order or signal strength of the discovery replies. A wireless image transmission session is established with the selected projector resource during which the projector is unavailable to other devices. The subset image data may be compressed and transmission coordinated with the projector resource so that the data is sent only when it is ready to be received. A wireless to digital visual interface (DVI) graphics engine decompresses and renders the image for output to a DVI connector receptacle. The rendered image is projected by the projector resource in accordance with the associated header data so that the exact image that appears on the image generation device also appears on the projected display.
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Duffy Joshua
Girardelli Marques Ronald
Hoeye Rob
Long Paul
Olson Jorell A.
Cruz Magda
Epps Georgia Y
Kilpatrick Townsend & Stockton LLP
Seiko Epson Corporation
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