Highway information system
First Claim
1. A data processing device for providing data related to the categories of services available at locations along a highway crossing a boundary of first and second contiguous geographical areas in response to operator input, the device comprising:
- a memory;
means for entering in the memory input data identifying a desired service and an origin position along the highway in the first geographical area;
means for storing first and second tables of predetermined data of the categories of services available at selected locations in the first and second geographical areas, respectively, along the highway;
means for determining whether the closest desired service is located in the first or second geographical area;
means, responsive to the means for determining, for selecting the first table if the closest desired service is located in the first geographical area and for selecting the second table if the closest desired service is located in the second geographical area;
means for retrieving from the selected table predetermined data which is a function of the input data; and
means for displaying the retrieved data.
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Accused Products
Abstract
A data processing device for providing data related to the categories of services available at locations along a highway in response to operator input is disclosed. The device includes a memory, a keyboard for entering input data identifying a desired service and an origin position into the memory. The input data is compressed before it is stored in the memory. The memory stores predetermined data in a compressed form related to the categories of services available at locations along the highway. The device also includes a microprocessor for retrieving from the memory the predetermined data which is a function of the input data. The microprocessor expands the retrieved compressed data into an operator readable form and provides the expanded data to a display for displaying the expanded retrieved data such as restaurants, gas stations, motels, or other services along the highway.
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Citations
8 Claims
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1. A data processing device for providing data related to the categories of services available at locations along a highway crossing a boundary of first and second contiguous geographical areas in response to operator input, the device comprising:
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a memory; means for entering in the memory input data identifying a desired service and an origin position along the highway in the first geographical area; means for storing first and second tables of predetermined data of the categories of services available at selected locations in the first and second geographical areas, respectively, along the highway; means for determining whether the closest desired service is located in the first or second geographical area; means, responsive to the means for determining, for selecting the first table if the closest desired service is located in the first geographical area and for selecting the second table if the closest desired service is located in the second geographical area; means for retrieving from the selected table predetermined data which is a function of the input data; and means for displaying the retrieved data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification