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 in response to operator input, the device comprising:
- a memory including a data register;
means for entering one or more entries of input data identifying a desired service and an origin position into the data register of the memory;
means for compressing the input data in the data register of the memory by assigning to each entry of the input data a key word having less bits than the entry;
means for storing predetermined data in a compressed format relating to the types of services available at locations along the highway wherein the predetermined data comprises key words;
means for comparing the compressed input data to the compressed predetermined data in the storing means for identifying one or more key words of the compressed predetermined data in the storing means which directly corresponds to the compressed input data;
means for selectively retrieving from the storing means the one or more key words of the compressed predetermined data which directly corresponds to the compressed input data;
means for expanding the retrieved compressed predetermined data into an operator readable form; and
means for displaying the expanded 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
15 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 in response to operator input, the device comprising:
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a memory including a data register; means for entering one or more entries of input data identifying a desired service and an origin position into the data register of the memory; means for compressing the input data in the data register of the memory by assigning to each entry of the input data a key word having less bits than the entry; means for storing predetermined data in a compressed format relating to the types of services available at locations along the highway wherein the predetermined data comprises key words; means for comparing the compressed input data to the compressed predetermined data in the storing means for identifying one or more key words of the compressed predetermined data in the storing means which directly corresponds to the compressed input data; means for selectively retrieving from the storing means the one or more key words of the compressed predetermined data which directly corresponds to the compressed input data; means for expanding the retrieved compressed predetermined data into an operator readable form; and means for displaying the expanded retrieved data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A data processing device for providing data related to categories of services available at locations along a highway in response to operator input, the device comprising:
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a memory; means for entering one or more entries of input data relating to a state, a highway, a direction, a location, and a category into the memory; a state register for storing the entered state; a highway register for storing the entered highway; a direction register for storing the entered direction; a location register for storing the entered location; a category register for storing the entered category; means for storing predetermined compressed, key word data related to categories of services available at locations along the highway; means for compressing the input data stored in the memory by assigning to each entry of the input data a key word having less bits than the entry; means for comparing the compressed input data to the predetermined compressed, key word data for identifying predetermined compressed data which is the closest data corresponding to the entered input data relating to state, highway, direction, and location; means for selectively retrieving from the storing means the predetermined compressed data which is the closest data corresponding to the entered input data relating to state, highway, direction, and location; means for expanding the retrieved compressed, key word data into an operator readable form; and means for displaying the retrieved data. - View Dependent Claims (11, 12, 13, 14)
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15. A data processing device for providing data related to the categories of services available at locations along a highway in response to operator input, the device comprising:
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a memory means for entering one or more entries of input data identifying a desired service and an origin position into the memory; means for compressing the input data in the memory by assigning to each entry of the input data a key word having less bits than the entry; means for storing predetermined data in a compressed format relating to the types of services available at locations along the highway wherein the predetermined data comprises key words; means for comparing the compressed input data to the compressed predetermined data for identifying one or more key words of the compressed predetermined data which directly corresponds to the compressed input data means for selectively retrieving from the storing means the one or more key words of the compressed predetermined data which directly corresponds to the compressed input data; means for expanding the retrieved compressed predetermined data into an operator readable form; means for displaying the expanded retrieved data; and
wherein the entering means includes means for inputting a direction of travel of the operator and wherein the retrieving means is responsive to the inputting means for retrieving compressed predetermined data corresponding to the direction of travel input by the operator.
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Specification