05844505 is referenced by 397 patents and cites 8 patents.

Automobile navigation system utilizes a wide angle CCD camera that is coupled to the vehicle to receive video images of signs being approached by the vehicle. The user (e.g., the driver) of the system supplies via an input keyboard the desired destination of the vehicle and by using, e.g., a digital compass, the current direction of travel of the vehicle is ascertained. Then, by utilizing a computer system having therein a road database and optical character recognition software, the system converts the video images to road data that identifies the current location of the vehicle, and determines from the current location of the vehicle and the desired destination a desired route of travel. Specific audio directions then are supplied to the driver depending on the vehicle's current location and desired route of travel.

Title
Automobile navigation system
Application Number
8/825595
Publication Number
5844505
Application Date
April 1, 1997
Publication Date
December 1, 1998
Inventor
John M Van Ryzin
Madison
NJ, US
Agent
Frommer Lawrence & Haug
Agent
William S Frommer
Assignee
Sony Electronics
NJ, US
Sony Corporation
JP
IPC
G08G 1/123
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