Patent ID: 6023290
Filing Date: 2000-02-08
Classification: G01C

Abstract:
A display apparatus for displaying information from a plurality of audio sources comprising:first information generating means for generating an image of an electronic map showing streets for navigation from a memory on which map information including said streets is recorded and using a global positioning system (GPS) receiver that utilizes satellites to obtain a current location;second information generating means for generating an image of information relating to one of said plurality of audio sources;display means for selectively displaying said image of an electronic map showing streets for navigation and said image of information relating to one of said plurality of audio sources;image mixing means for generating a mixed image for display on said displaying means from said image of an electronic map showing streets for navigation and said information relating to one of said plurality of audio sources generated respectively by said first and said second information generating means, said image mixing means having a plurality of working memories for storing respective information relating to said plurality of audio sources and for storing said map information and having a frame memory so that said information to be displayed is copied into said frame memory to form said mixed image, wherein said mixed image is formed of said image of information relating to one of said plurality of audio sources superimposed on said image of an electronic map showing streets for navigation; anda display switching key connected to said image mixing means for causing said image of information relating to one of said audio sources to be superimposed on said image of an electronic map showing streets for navigation upon a user first depressing said display switching key while said image of an electronic map showing streets for navigation is being displayed on said displaying means and upon the user next depressing said display switching key additionally displaying a frequency analysis image and upon the user next depressing said display switching key displaying only said image of an electronic map showing streets for navigation,wherein said navigation allows a user to navigate from a street of the current location to a street of a destination.