Road map displaying system for automotive vehicle
First Claim
1. A road map displaying system for an automotive vehicle for displaying road information transmitted by fixed transmitters on a display unit of an automotive vehicle, which comprises:
- (a) means for receiving road information including position data and traffic snarl data transmitted by the fixed transmitters;
(b) means for storing a plurality of road maps;
(c) means for selecting a current road map from those stored in said storing means on the basis of the received position data;
(d) means for displaying traffic snarl information on the selected road map on the basis of the received traffic snarl data;
(e) means for measuring time elapsed after the road information from the fixed transmitter has been received by said receiving means; and
(f) means for deleting the traffic snarl information displayd on the selected road map, when a predetermined time-related condition is satisfied after the road information has been received.wherein the predetermined time-related condition is an average time period predetermined according to roads, time of day and weather conditions.
1 Assignment
0 Petitions
Accused Products
Abstract
A road map displaying system for an automotive vehicle for displaying road information transmitted by a radio beacon transmitter (1) on a display unit (6) of an automotive vehicle comprises: a radio receiver (3) for receiving road information including position data and traffic snarl data transmitted by the radio beacon transmitter; a memory unit (4) for storing various road maps; and a processing unit (5) for selecting a current road map on the basis of the received position data, displaying traffic snarl information on the selected road map on the basis of the received traffic snarl data, measuring time elapsed after the road information has been received, and in particular, deleting the traffic snarl information displayed on the selected road map, when a predetermined timer or distance-related condition is satisfied after the road information has been received. Since the old traffic snarl information can be deleted, a more reliable traffic information can be provided to the driver, without confusing the driver with the old road information.
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Citations
19 Claims
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1. A road map displaying system for an automotive vehicle for displaying road information transmitted by fixed transmitters on a display unit of an automotive vehicle, which comprises:
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(a) means for receiving road information including position data and traffic snarl data transmitted by the fixed transmitters; (b) means for storing a plurality of road maps; (c) means for selecting a current road map from those stored in said storing means on the basis of the received position data; (d) means for displaying traffic snarl information on the selected road map on the basis of the received traffic snarl data; (e) means for measuring time elapsed after the road information from the fixed transmitter has been received by said receiving means; and (f) means for deleting the traffic snarl information displayd on the selected road map, when a predetermined time-related condition is satisfied after the road information has been received. wherein the predetermined time-related condition is an average time period predetermined according to roads, time of day and weather conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A road map displaying system for an automotive vehicle for displaying road information transmitted by fixed transmitters on a display unit of an automotive vehicle, which comprises:
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(a) means for receiving road information including position data and traffic snarl data transmitted by the fixed transmitters; (b) means for storing a plurality of road maps; (c) means for selecting a current road map from those stored in said storing means on the basis of the received position data; (d) means for displaying traffic snarl information on the selected road map on the basis of the received traffic snarl data; (e) means for measuring time elapsed after the road information from the fixed transmitter has been received by said receiving means; and (f) means for deleting the traffic snarl information displayed on the selected road map, when a predetermined distance-related condition is satisfied after the road information has been received; wherein the predetermined distance-related condition is a predetermined vehicle travel distance. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of displaying road information transmitted by fixed transmitters on a display unit for an automotive vehicle, which comprises the steps of:
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(a) checking whether road information including position data and traffic snarl data is received from a fixed transmitter; (b) if received, storing the received road information; (c) displaying a road map on the display unit on the basis of the received position data; (d) displaying traffic snarl information on the displayed road map on the basis of the received traffic snarl data; (e) if road information is not received a predetermined time period, calculating vehicle positions by a vehicle position detecting unit to display a new road map on the display unit; (f) checking whether a predetermined time-related condition is satisfied after the last road information has been received; (g) if not satisfied, keeping the last traffic snarl information displayed on the road map; and (h) if satisfied, deleting the last traffic snarl information from the road map. - View Dependent Claims (18)
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19. A method of displaying road information transmitted by fixed transmitters on a display unit for an automotive vehicle, which comprises the steps of:
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(a) checking whether road information including position data and traffic snarl data is received from a fixed transmitter; (b) if received, storing the received road information; (c) displaying a road map on the display unit on the basis of the received position data; (d) displaying traffic snarl information on the displayed road map on the basis of the received traffic snarl data; (e) if road information is not received during a predetermined time period, calculating vehicle positions by a vehicle position detecting unit to display a new road map on the display unit; (f) checking whether a predetermined distance-related condition is satisfied after the last road information has been received; (g) if not satisfied, keeping the last traffic snarl information displayed on the road map; and (h) if satisfied, deleting the last traffic snarl information from the road map.
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Specification