Mobile telephone terminal having function to perform call clear process

A mobile telephone terminal comprising:

• first means for generating a first control signal when said telephone terminal is in a communication state;
• second means for generating a second control signal when said telephone terminal is not in said communication state;
• power switch means;
• third means for detecting the actuation of said power switch means when said telephone terminal is in said communication state to produce a third control signal;
• fourth means responsive to said third control signal for performing a call clear process;
• fifth means responsive to said second control signal for stopping power supply to said telephone terminal immediately after said fifth means receives said third control signal;
• and
• sixth means responsive to said first control signal for stopping said power supply after a predetermined period of time from the time when said sixth means receives said third control signal, said predetermined period of time being long enough to allow said fourth means to complete said call clear process.

A telephone terminal comprising:

• radio communication means for radio communicating with other parties;
• battery means for supplying power to said telephone terminal;
• power switch means for generating a switch signal;
• call clear means responsive to said switch signal for performing a call clear process;
• means for generating a communication state signal when said telephone terminal is in a communication state;
• means for generating a waiting state signal when said telephone terminal is not in a communication state;
• delay circuit means for delaying said switch signal by a first predetermined period of time in response to said communication state signal to produce a first control signal and for delaying said switch signal by a second predetermined period of time in response to said waiting state signal to produce a second control signal, said first predetermined period of time being longer than said second predetermined period of time and being long enough to allow said call clear means to complete said call clear process;
• and
• power supply switch means responsive to one of said first and second control signals for stopping power supply from said battery means to said telephone terminal.

In a combination of portable unit means, adapter means for mounting said portable unit means on a vehicle, vehicle battery means for applying power to said adapter means and said portable unit means, handset means and first antenna means mounted on said vehicle.

• said portable unit means comprising:
• radio frequency (RF) section means;
• second antenna means built in said portable unit means and being connectable with said RF section means;
• portable-unit controller means connected with said RF section means and including means for generating a waiting state signal when said portable unit means is in a waiting state, call clear means for generating a communication state signal when said portable unit means is in a communication state, and means responsive to a call clear command for performing a call clear process;
• microphone/receiver means connected with said portable-unit controller means;
• and
• portable-unit battery means for supplying power to said portable unit means.
• said adapter means comprising:
• adapter controller means including means for generating a first control signal in response to said communication state signal, means for generating a second control signal in response to said waiting state signal, and means for generating said call clear command in response to a switch signal;
• power switch means for manually generating said switch signal;
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• delay circuit means for delaying said switch signal by a first and a second predetermined period of time in response to said first and said second control signal, respectively, to produce a first and a second power control signal, respectively, said first predetermined period of time being longer than said second predetermined period of time and being long enough to allow said call clear means to complete said call clear process;
• and
• power supply switch means responsive to one of said first and second power control signals for stopping power supply from said vehicle battery means to said adapter means and said portable unit means;
• said combination further comprising:
• first switch means connected between said portable-unit battery means and said vehicle battery means;
• second switch means connected between said first and second switch means;
• third switch means connected between said microphone/receiver and handset means;
• and
• switch control means for connecting said first, second and third switch means with said vehicle battery means, said first antenna means and said handset means, respectively, in response to the attachment of said portable unit means to said adapter means and for connecting said first, second and third switch means with said portable-unit battery means, said second antenna means and said microphone/receiver means, respectively, in response to the detachment of said portable-unit means from said adapter means.

A method of controlling power supply to a telephone terminal, comprising the following steps of:

• supplying power to said telephone terminal;
• generating a switch signal;
• responsive to said switch signal performing a call clear process;
• generating a communication state signal when said telephone terminal is in a communication state;
• generating a waiting state signal when said telephone terminal is in a waiting state;
• responsive to said communication state signal, delaying said switch signal by a first predetermined period of time to produce a first control signal;
• responsive to said waiting state signal, delaying said switch signal by a second predetermined period of time to produce a second control signal, said first predetermined period of time being longer than said second predetermined period of time and being enough to complete said step of performing said call clear process;
• and
• responsive to one of said first and second control signals, stopping power supply to said telephone terminal.