Patent ID: 6636785
Filing Date: 2003-10-21
Classification: G01C

Abstract:
A communications control apparatus for an automotive vehicle, comprising:a road map storing section that stores a road map data; an electromagnetic wave environmental data storing section that stores an electromagnetic wave environmental data; a vehicular position retrieving section that retrieves a position of the vehicle; a traveling time predicting section that predicts a traveling time for which the vehicle travels on a traveling scheduled route using the road map data; a communication speed predicting section that predicts a communication speed when the vehicle travels on the traveling scheduled route using the electromagnetic wave environmental data; a playback speed retrieving section that retrieves a playback speed of a requested content; a buffer enabling quantity calculating section that calculates a buffer enabling quantity by which data of the requested content is enabled to be buffered into a receiving buffer during a vehicular run on the traveling scheduled route using the traveling time obtained from the traveling time predicting section and the communication speed obtained from the communication speed predicting section; and a receiving buffer setting section that sets a capacity of the receiving buffer according to a calculated result of the buffer enabling quantity calculating section and an upper limit value of the receiving buffer capacity, the data of the requested content being downloaded onto the receiving buffer whose capacity is set by the receiving buffer setting section.