Wireless multi-user multi-projector presentation system
First Claim
1. A system for integrating and coordinating a plurality of media presentation displays comprising:
- at least one media source having a media sequence;
for each media source, a presentation controller responsive to the media source, and connected to receive the media sequence from the media source, the presentation controller being operable for wireless communication;
a presentation server operable for wireless communication with each presentation controller such that the presentation server receives the media sequences of each media source; and
at least one media transmitter connected to the presentation server, each of the projectors responsive to the presentation server and operable to display the media sequence of the media sources.
2 Assignments
0 Petitions
Accused Products
Abstract
Media slides are often employed in conference sessions, meetings, lectures, and other interactive forums. The proliferation of laptops and handheld computers allows a speaker to present directly from the laptop by connecting to the projector at the conference site. Physically connecting and disconnecting each presenter'"'"'s laptop to the projection apparatus, however, can be a clumsy and disruptive process, particularly since the presenters may be seated at various locations around the room. A wireless interface between a presentation server and a laptop in a multi-user multi-projector presentation system allows a media sequence from each media source to be displayed on a common display via the presentation server and the wireless interface. Presenters need not run or swap cables or other physical connections to switch media sources to the common display. The interface requires no software modification to the media source laptops and maintains independence between media sources and the server for security. The presentation server communicates with the media sources over the mouse port allowing innovative user interfaces, such as gesture recognition, to be employed for presentation control without additional software. Multiple projectors redundantly illuminate the display surface, dynamically eliminating shadows and other display artifacts when presenters walk between a projector and the screen. Distracting projected light cast on to the occluding presenters is automatically suppressed.
118 Citations
45 Claims
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1. A system for integrating and coordinating a plurality of media presentation displays comprising:
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at least one media source having a media sequence;
for each media source, a presentation controller responsive to the media source, and connected to receive the media sequence from the media source, the presentation controller being operable for wireless communication;
a presentation server operable for wireless communication with each presentation controller such that the presentation server receives the media sequences of each media source; and
at least one media transmitter connected to the presentation server, each of the projectors responsive to the presentation server and operable to display the media sequence of the media sources. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of transmitting presentation data from a media source to a media presenter comprising:
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establishing a wireless link between the media source and the media presenter, the media source having a media sequence comprising frames;
transmitting at least one frame from the media source to the media presenter;
rendering a displayed image by the media presenter on a common medium based on the transmitted frame; and
selectively transmitting at least a portion of a subsequent frame in the media sequence from the media source to the media presenter when a measurable difference in images from one frame to another frame is detected in the media sequence. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of displaying media data comprising:
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disposing a plurality of projectors proximate to a common display, the projectors receiving a signal from at least one video source;
calibrating the brightness of a respective displayed image from each of the projectors such that an aggregated displayed image on the common display has a consistent brightness;
detecting the presence of an interfering object between at least one of the projectors and the common display, the interfering object appearing as an obscured portion in the respective displayed image from the at least one projector on the common display; and
recomputing the brightness from each of the projectors such that display intensity at the obscured portion is compensated for and maintained at a level consistent with brightness of the respective displayed image before the presence of the interfering object. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of displaying media on a common display comprising:
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providing a plurality of projectors operable for multimedia display;
disposing each of the projectors at a selected location in proximity to the common display, each of the locations having a perspective to the common display;
receiving, at each of the plurality of projectors, a media sequence comprising at least one frame;
determining, based on the perspective for each of the projectors, display parameters corresponding to the appearance of the media on the common display;
displaying, on the common display, the frame according to the display parameters; and
recomputing, based on the appearance of the media on the common display, each of the display parameters. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A computer program product having computer program code for transmitting presentation data from a media source to a media presenter comprising:
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computer program code for establishing a wireless link between the media source and the media presenter, the media source having a media sequence comprising frames;
computer program code for transmitting at least one frame from the media source to the media presenter;
computer program code for rendering a displayed image by the media presenter on a common medium based on the transmitted frame; and
computer program code for selectively transmitting at least a portion of a subsequent frame in the media sequence from the media source to the media presenter when a measurable difference in images from one frame to another frame is detected in the media sequence.
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44. A computer data signal including program code for transmitting presentation data from a media source to a media presenter comprising:
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program code for establishing a wireless link between the media source and the media presenter, the media source having a media sequence comprising frames;
program code for transmitting at least one frame from the media source to the media presenter;
program code for rendering a displayed image by the media presenter on a common medium based on the transmitted frame; and
program code for selectively transmitting at least a portion of a subsequent frame in the media sequence from the media source to the media presenter when a measurable difference in images from one frame to another frame is detected in the media sequence.
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45. A system for integrating and coordinating a plurality of media presentation displays comprising:
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means for establishing a wireless link between the media source and the media presenter, the media source having a media sequence comprising frames;
means for transmitting at least one frame from the media source to the media presenter;
means for rendering a displayed image by the media presenter on a common medium based on the transmitted frame; and
means for selectively transmitting at least a portion of a subsequent frame in the media sequence from the media source to the media presenter when a measurable difference in images from one frame to another frame is detected in the media sequence.
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Specification