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Changes between Version 66 and Version 67 of JCopSamples


Ignore:
Timestamp:
01/13/2011 03:28:48 PM (10 years ago)
Author:
malte.appeltauer
Comment:

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  • JCopSamples

    v66 v67  
    7171
    7272Two students, Lucy and Tim have an appointment at University at 12:00. [[BR]]
    73 At 11:50, Lucy arrives at the campus. She checks her mobile device to inform herself about Tim’s current whereabout. The graphical representation of this information depends on Lucy’s context: If Lucy’s device is currently connected to the Internet at high-bandwidth, a map image service is requested to render Tim’s location on a map.  Contrary, if the bandwidth is low, Tim’s representation depends on Lucy’s need for active information. This information is stored in Lucy’s user profile and is accessible for applications.  In the case that Lucy prefers a smart representation over the refresh period, a map with Tim’s outdated location is shown. The map is labeled with the time stamp of the last update. Alternatively, when Lucy insists on up-to-date information,
    74 while the bandwidth is too low for updating the map image, Tim’s position data is simply shown as a text. [[BR]]
    75 At the same time, Tim arrives at the underground station, where his GPS device is unable to receive data any
    76 more. Thus, his mobile device switches to cell-based location detection.  The new location data is calculated based on the position of the current mobile cell.  The change of the location provider is propagated to Lucy’s device.  Depending on its current context, the device has to decide how it renders this additional location information.
     73   At 11:50, Lucy arrives at the campus. She checks her mobile device to inform herself about Tim’s current whereabout. The graphical representation of this information depends on Lucy’s context: If Lucy’s device is currently connected to the Internet at high-bandwidth, a map image service is requested to render Tim’s location on a map.  Contrary, if the bandwidth is low, Tim’s representation depends on Lucy’s need for active information. This information is stored in Lucy’s user profile and is accessible for applications.  In the case that Lucy prefers a smart representation over the refresh period, a map with Tim’s outdated location is shown. The map is labeled with the time stamp of the last update. Alternatively, when Lucy insists on up-to-date information, while the bandwidth is too low for updating the map image, Tim’s position data is simply shown as a text. [[BR]]
     74   At the same time, Tim arrives at the underground station, where his GPS device is unable to receive data and more. Thus, his mobile device switches to cell-based location detection. The new location data is calculated based on the position of the current mobile cell.  The change of the location provider is propagated to Lucy’s device.  Depending on its current context, the device has to decide how it renders this additional location information.
    7775
    7876The application allows to navigate Lucy's and Tim's cellphones over a map of Berlin. Changes to the rendering of the cellphone displays are implemented by layers.