Dual mode radio communication apparatus having function of selectively designating analog or digital mode

DETAILED DESCRIPTION It is the first object of the present invention to automatically change the current mode to a desired mode without causing a user to perform a mode change operation even if the user does not set the desired mode at the start of communication, thereby improving operability.
It is the second object of the present invention to automatically change the current mode to a desired mode without causing a user to perform a mode change operation again even if the desired mode cannot be set upon a mode change during communication, thereby improving operability.
It is the third object of the present invention not to perform wasteful mode change control when the same mode as that set during communication is designated.
It is the fourth object of the present invention to cause a user to clearly confirm at least one of the mode currently used in communication and the desired mode input by a mode designation operation, thereby preventing communication in an inappropriate mode and an erroneous mode change operation.
It is the fifth object of the present invention to allow setup of a mode suitable for specific functional communication without any mode change operation when the specific functional communication is to be performed, thereby preventing communication in an inappropriate mode and improving operability.
It is the sixth object of the present invention to properly execute mode change processing when a handoff command is not sent back from a base station upon transmission of a mode change request.
In order to achieve the first object, a radio communication apparatus according to the present invention comprises a mode designation switch for selectively designating and inputting a desired mode from an analog mode and a digital mode, and a mode storage circuit for storing the desired mode designated and input by the mode designation switch, and has a mode setting control function, a mode comparison function, and a mode change control function.
In order to establish a radio link, control is performed to set a mode for transmitting a communication signal in accordance with the desired mode stored in the mode storage circuit