Satellite communication system
First Claim
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1. A satellite communication system for transmitting a message between a mobile station and a stationary station through a communication satellite, comprising:
- a ROM provided in said mobile station for storing a plurality of types of pre-recorded messages to be transmitted from said mobile station to said stationary station;
a RAM provided in said mobile station for receiving a command transmitted from said stationary station;
means provided in the stationary station for transmitting said command to said RAM in said mobile station for modifying one of said pre-recorded messages stored in said ROM, said command being transmitted to the mobile station through the communication satellite to thereby modify the one pre-recorded message stored in said ROM; and
means provided in said mobile station for modifying the message stored in said ROM in accordance with the command stored in said RAM.
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Abstract
A satellite communication system for transmitting a message between a mobile station and a stationary station through a communication satellite comprises a memory provided in a mobile station for previously storing a plurality of types of messages to be transmitted, and a unit provided in the stationary station for transmitting a command for modifying a message stored in the memory to the mobile station through the communication satellite to thereby modify the message stored in the memory.
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Citations
7 Claims
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1. A satellite communication system for transmitting a message between a mobile station and a stationary station through a communication satellite, comprising:
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a ROM provided in said mobile station for storing a plurality of types of pre-recorded messages to be transmitted from said mobile station to said stationary station; a RAM provided in said mobile station for receiving a command transmitted from said stationary station; means provided in the stationary station for transmitting said command to said RAM in said mobile station for modifying one of said pre-recorded messages stored in said ROM, said command being transmitted to the mobile station through the communication satellite to thereby modify the one pre-recorded message stored in said ROM; and means provided in said mobile station for modifying the message stored in said ROM in accordance with the command stored in said RAM. - View Dependent Claims (2, 3, 4)
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5. A communication apparatus for use in a mobile vehicle, comprising:
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a central controller; input means, connected to said central controller, for receiving information from an operator; a display panel, connected to said central controller, for displaying information to said operator; an antenna; a transmitter unit, connected to said antenna and to said central controller, for sending signals to said antenna from said central controller; a receiver unit, connected to said antenna and to said central controller, for supplying signals received from said antenna to said central controller; a ROM, connected to said central controller, for storing a plurality of pre-recorded standardized messages; and a RAM, connected to said central controller, for storing command signals transmitted from a stationary station remote from said vehicle; wherein a command signal is transmitted by said stationary station in order to modify one of said plurality of pre-recorded messages, said central controller retrieves said one pre-recorded message along with its associated command signal when said one pre-recorded message is selected with said input means, and wherein said central controller displays said one pre-recorded message on said display panel after being modified by said command signal. - View Dependent Claims (6, 7)
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Specification