Navigation device
AssigneeAisin Aw Co., Ltd.
InventorHiroki Ishikawa
Life of this patent
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Abstract
Systems and methods store request frequencies arranged by time period, each request frequency indicating a frequency at which traffic information distribution is to be requested from an information distribution center. The systems and methods determine a request timing based on a current time and the stored request frequencies and determine whether the request timing has elapsed since a previous traffic information distribution request. When it is determined that the request timing has elapsed, the systems and methods transmit a request for distribution of the traffic information to the information distribution center and receive the requested traffic information distributed from the information distribution center.
Claims20
A navigation device for installation in a vehicle, comprising:
- a memory that stores request frequencies arranged by time period, each request frequency indicating a frequency at which traffic information distribution is to be requested from an information distribution center;
- and
- a controller that
- determines a request timing based on a current time and the stored request frequencies;
- determines whether the request timing has elapsed since a previous traffic information distribution request;
- when it is determined that the request timing has elapsed, transmits a request for distribution of the traffic information to the information distribution center;
- and
- if the request is transmitted, receives the requested traffic information distributed from the information distribution center.
An information acquisition method for use with a navigation device installed in a vehicle, comprising:
- storing request frequencies arranged by time period, each request frequency indicating a frequency at which traffic information distribution is to be requested from an information distribution center;
- and
- determining a request timing based on a current time and the stored request frequencies;
- determining whether the request timing has elapsed since a previous traffic information distribution request;
- when it is determined that the request timing has elapsed, transmitting a request for distribution of the traffic information to the information distribution center;
- and
- if the request is transmitted, receiving the requested traffic information distributed from the information distribution center.
A navigation device for installation in a vehicle, comprising:
- means for storing request frequencies arranged by time period, each request frequency indicating a frequency at which traffic information distribution is to be requested from an information distribution center;
- and
- means for determining a request timing based on a current time and the stored request frequencies;
- means for determining whether the request timing has elapsed since a previous traffic information distribution request;
- means for transmitting, when it is determined that the request timing has elapsed, a request for distribution of the traffic information to the information distribution center;
- and
- means for receiving, if the request is transmitted, the requested traffic information distributed from the information distribution center.
Dependencies are inferred from the claim text.