Abstract: When a mobile device is positioned in a first coverage area with first service parameters, it is determined that the mobile device is likely to enter a second coverage area with second service parameters. The mobile device has access to map data while in the first coverage area and the second coverage area. If it is determined that the first coverage area is more favorable to data transfer than the second coverage area using the service parameters, a request for map data for rendering a map of the second coverage area is generated when the mobile device is within the first coverage area, and prior to receiving a request to view the map of the second coverage area on the mobile device. The map data is received and stored on the mobile device for subsequent rendering.

Abstract: When a mobile device is positioned in a first coverage area with first service parameters, it is determined that the mobile device is likely to enter a second coverage area with second service parameters. The mobile device has access to map data while in the first coverage area and the second coverage area. If it is determined that the first coverage area is more favorable to data transfer than the second coverage area using the service parameters, a request for map data for rendering a map of the second coverage area is generated when the mobile device is within the first coverage area, and prior to receiving a request to view the map of the second coverage area on the mobile device. The map data is received and stored on the mobile device for subsequent rendering.

Abstract: It is an age-old problem that with time finge-rings can become difficult to remove, while in general they should not, after all, be all too easy to take off. With the invention there is provided an openable ring which, it should be noted, does not comprise irritating hinge parts or releasing means, in that the one of the four geometric main elements of the ring is configured as a substantially straight piece which can be turned outwards from the natural plane of the ring, while in the turned inwards position it is in snap-lock engagement with the opposite end of the remaining, substantially U-shaped ring element. For this releasable locking, use is thus made of the natural elasticity of the ring element, and it is the whole of the outwardly-pivotal piece in itself which is used as the operating element for the opening and closing of the ring.

Abstract: An optical scanner unit has a window which transmits light from inside the scanner to a target, for example, a bar code, and receives light from a target into the scanner. The window is tilted at Brewster's angle to permit light from inside the scanner to exit the scanner without "exit reflection" of light off the interior of the window. The window also permits light returned from the scanned target to enter the scanner and be sensed by a photodetector therein. The same window may be used for light transmitted to the photodetector and from the light source. The window is disposed at Brewster's angle relative to the scanning beam at the center of scan, and is close to Brewster's angle over the entire scan.