Chart display device and method for displaying chart

#1. Field of the Invention

#The present invention is related to chart display devices, and more particularly to a chart display device for displaying a photograph for land and marine use.

#2. Description of the Related Art

#Further aspects and advantages of the present invention will become apparent upon reading the following detailed description in conjunction with the accompanying drawings, in which:

#FIG. 1 is a general block diagram of a navigation system according to an embodiment of the present invention;

#FIG. 2A is a flow diagram illustrating operations performed in a blending process by a navigation system according to an embodiment of the present invention illustrated in FIG. 1;

#Aspects of the invention are more specifically set forth in the accompanying description with reference to the appended figures.

#In one aspect, the present invention relates to methods and apparatuses that display an image that includes multiple layers, such as aerial or satellite photograph layers and chart layers associated with land and sea areas. Methods and apparatuses of the present invention display aerial photographs in the land area, a travel route to a destination, and a chart in a sea area. The aerial photographs and the chart are blended with variable transparency values, so that information items displayed on the aerial photographs and on the chart are clear and recognizable without difficulty.

#FIG. 3 is an example view of an aerial photo. As shown in FIG. 3, an aerial photo illustrates land areas, water areas, and objects on land or water. FIG. 4 is an example view of a chart.