Communications terminal operable with high security protocol

• US 20030084338A1
• Filed: 10/22/2002
• Published: 05/01/2003
• Est. Priority Date: 10/30/2001
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Ito, Toshiyuki
• Granted Patent: US 7,263,715 B2
• Time in Patent Office: Days
• US Class Current: 713/200
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

A mobile phone connected to the Internet determines whether an emergency communications request for a designated IP address is received, and terminates the telephone line connection when the emergency communications request is received. When the telephone line connection is disconnected, the mobile phone awaits a call from an emergency communications server in order to handle the emergency communications request. When the call is received from the emergency communications server, the mobile phone connects by a telephone line to the emergency communications server and communicates by way of a dedicated protocol with the emergency communications server.

Claims

1. A communications terminal having an Internet address for connection to the Internet through a communications line, the communications terminal comprising:

a communications unit for connecting to the Internet by the address through the communications line;

a determination means for determining whether a communications request specifying the address is received from a server when connected to the Internet;

a disconnecting means for disconnecting the communications line when determined by the determination means that the communications request is received;

a waiting means for waiting to receive an incoming call from the server for responding to the communications request when the communications line is disconnected by the disconnecting means; and

a communicating means for communicating by way of the communications unit on the communications line with a communications protocol having a higher degree of security compared with an Internet communications protocol when an incoming call is received by the waiting means.

2. A communications terminal according to claim 1 further comprising:

a call prohibiting means for prohibiting making of calls for a specified period of time after the communications line is disconnected by the disconnecting means.

3. A communications terminal having an Internet address for connection to the Internet through a communications line, the communications terminal comprising:

a determination means for determining whether a communications request specifying the address is received from a server when connected to the Internet;

a disconnecting means for disconnecting the communications line when determined by the determination means that the communications request is received; and

a communicating means for making a call to the server and communicating by the communications unit on the communications line with a communications protocol having a higher degree of security compared with an Internet communications protocol when the communications line is disconnected by the disconnecting means.

4. A communications terminal according to claim 3, further comprising:

a call prohibiting means for prohibiting making of calls for a specified period of time after the communications line is disconnected by the disconnecting means.

5. A communications network system comprising:

a communications terminal that has an Internet address for connection to the Internet through a communications line; and

a server for sending a communications request specifying the address of the communications terminal when connected to the Internet,

wherein the communications terminal includes

a determination means for determining whether a communications request specifying the address is received from the server when connected to the Internet,

a disconnecting means for disconnecting the communications line when determined by the determination means that the communications request is received,

a waiting means for waiting to receive an incoming call from the server for responding to the communications request when the communications line is disconnected by the disconnecting means, and

a communicating means for communicating by the communications unit on the communications line with a communications protocol having a higher degree of security compared with an Internet communications protocol when an incoming call is received by the waiting means.

6. A communications network system comprising:

a communications terminal that has an Internet address for connection to the Internet through a communications line; and

a server for sending a communications request specifying the address of the communications terminal when connected to the Internet,

wherein the communications terminal includes

a determination means for determining whether a communications request specifying the address is received from a server when connected to the Internet,

a disconnecting means for disconnecting the communications line when determined by the determination means that the communications request is received, and

a communicating means for the communications unit to make a call to the server and communicate on the communications line by way of a communications protocol having a higher degree of security compared with an Internet communications protocol when an incoming call is received by the waiting means.

7. A communications terminal having an Internet address for connection to the Internet through a communications line, the communications terminal comprising:

a communications unit for connecting to the Internet by the address through the communications line;

a transmitting means for transmitting a communications request to a server for requesting communications by a communications protocol having a higher degree of security compared with a communications protocol of the Internet when connected to the Internet;

a disconnecting means for disconnecting the communications line when the communications request is sent from the transmitting means;

a waiting means for waiting to receive an incoming call from the server when the communications line is disconnected by the disconnecting means; and

a communicating means for communicating by the communications unit on the communications line by the communications protocol having a higher degree of security compared with the communications protocol of the Internet when the incoming call is received by the waiting means.

8. A communications terminal having an Internet address for connection to the Internet through a communications line, the communications terminal comprising:

a communications unit for connecting to the Internet by the address through the communications line;

a transmitting means for transmitting a communications request to a server for requesting communications by a communications protocol having a higher degree security compared with a communications protocol of the Internet when connected to the Internet;

a disconnecting means for disconnecting the communications line when the communications request is sent from the transmitting means; and

a communicating means for making a call to the server by the communications unit and communicating on the communications line by the communications protocol having a higher degree of security compared with the communications protocol of the Internet when the communications line is disconnected by the disconnecting means.