Method of producing traffic signal information, method of providing traffic signal information, and navigation apparatus
First Claim
1. A method of producing traffic signal information, comprising:
- taking, when a vehicle is closely approaching a traffic signal, an image of traffic signal lamps disposed on the traffic signal;
producing image data of the traffic signal lamps, based on the taken image;
analyzing the image data;
producing traffic signal state information, the traffic signal state information including a state of the traffic signal as of the time of taking the image of the traffic signal lamps;
storing traffic signal information in a memory, the traffic signal information including the produced traffic signal state information, traffic signal location information, and time information; and
calculating a traffic signal control pattern of the traffic signal in each of a plurality of time zones by performing a statistical analysis on the stored traffic signal information.
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Accused Products
Abstract
Systems, methods, and programs of producing and using traffic signal information take, when a vehicle is closely approaching a traffic signal, an image of traffic signal lamps disposed on the traffic signal. The systems, methods, and programs produce image data of the traffic signal lamps, based on the taken image and analyze the image data. The systems, methods, and programs produce traffic signal state information, the traffic signal state information including a state of the traffic signal as of the time of taking the image of the traffic signal lamps. The systems, methods, and programs store traffic signal information, the traffic signal information including the produced traffic signal state information, traffic signal location information, and time information in a memory.
61 Citations
18 Claims
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1. A method of producing traffic signal information, comprising:
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taking, when a vehicle is closely approaching a traffic signal, an image of traffic signal lamps disposed on the traffic signal; producing image data of the traffic signal lamps, based on the taken image; analyzing the image data; producing traffic signal state information, the traffic signal state information including a state of the traffic signal as of the time of taking the image of the traffic signal lamps; storing traffic signal information in a memory, the traffic signal information including the produced traffic signal state information, traffic signal location information, and time information; and calculating a traffic signal control pattern of the traffic signal in each of a plurality of time zones by performing a statistical analysis on the stored traffic signal information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer readable storage medium storing a set of computer-executable program instructions executable on a data processing device and usable to produce traffic signal information, the program comprising:
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instructions for taking, when a vehicle is closely approaching a traffic signal, an image of traffic signal lamps disposed on the traffic signal; instructions for producing image data of the traffic signal lamps, based on the taken image; instructions for analyzing the image data; instructions for producing traffic signal state information, the traffic signal state information including a state of the traffic signal as of the time of taking the image of the traffic signal lamps; instructions for storing traffic signal information in a memory, the traffic signal information including the produced traffic signal state information, traffic signal location information, and time information; and instructions for calculating a traffic signal control pattern of the traffic signal in each of a plurality of time zones by performing a statistical analysis on the stored traffic signal information.
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15. An in-vehicle terminal, comprising:
a controller that; produces image data of the traffic signal lamps, based on a taken image; analyzes the image data; produces traffic signal state information, the traffic signal state information including a state of the traffic signal as of the time of taking the image of the traffic signal lamps; stores traffic signal information in a memory, the traffic signal information including the produced traffic signal state information, traffic signal location information, and time information; and calculates a traffic signal control pattern of the traffic signal in each of a plurality of time zones by performing a statistical analysis on the stored traffic signal information. - View Dependent Claims (16, 17, 18)
Specification