Invention Grant
US07905604B2 Method and apparatus for wireless image transmission to a projector
有权
用于无线图像传输到投影仪的方法和装置
- Patent Title: Method and apparatus for wireless image transmission to a projector
- Patent Title (中): 用于无线图像传输到投影仪的方法和装置
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Application No.: US11708780Application Date: 2007-02-20
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Publication No.: US07905604B2Publication Date: 2011-03-15
- Inventor: David Elliott Slobodin , Rob Hoeye , Jorell A. Olson , Paul Long , Marques Ronald Girardelli , Joshua Duffy
- Applicant: David Elliott Slobodin , Rob Hoeye , Jorell A. Olson , Paul Long , Marques Ronald Girardelli , Joshua Duffy
- Applicant Address: JP Shinjuku-ku, Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Shinjuku-ku, Tokyo
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: G03B21/56
- IPC: G03B21/56 ; G03B23/00 ; G09G5/00 ; G06F15/173 ; G06F3/00 ; G06F15/177 ; H04H40/00 ; H04B1/18

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.
Public/Granted literature
- US20070146642A1 Method and apparatus for wireless image transmission to a projector Public/Granted day:2007-06-28
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