COMMUNICATION TERMINAL APPARATUS, DISTRIBUTION APPARATUS, ERROR NOTIFICATION METHOD, AND ERROR NOTIFICATION PROGRAM

• US 20100097929A1
• Filed: 03/26/2008
• Published: 04/22/2010
• Est. Priority Date: 03/29/2007
• Status: Active Grant

• Current Assignee: KDDI Corporation
• Original Assignee: KDDI Corporation
• Inventors: Kimura, Hiroaki, Izawa, Shingo
• Granted Patent: US 8,179,795 B2
• Time in Patent Office: Days
• US Class Current: 370/230
• CPC Class Codes: H04L 1/1867 Arrangements specially adapted for the transmitter end
• CPC Class Codes: H04L 2001/0097 Relays
• CPC Class Codes: H04L 2212/00 Encapsulation of packets

Abstract

A communication terminal apparatus (130) includes a receiving unit (132) that receives distribution data distributed through a unidirectional communication network (210), an OS/application unit (131) that accepts transmission data to a tunneling apparatus (120), and a communication processing unit (133) that transmits the transmission data to a bidirectional communication network (220). When the communication processing unit (133) detects an error message of an encapsulated packet from the network (220) using a detecting unit (134), a setting unit (135) sets new transmission data that includes the error message. An error processing unit (136) subjects the transmission data to a process of resolving the error and thereafter, the transmission data is again transmitted to the network (220) to use the transmission data as distribution data from the tunneling apparatus (120).

Claims

1. A communication terminal apparatus that receives using a unidirectional communication network and that transmits using a bidirectional communication network, comprising:

a receiving unit that receives distribution data distributed through the unidirectional communication network;

an accepting unit that accepts transmission data to be transmitted to a distribution source of the distribution data received by the receiving unit; and

a communication processing unit that transmits the transmission data accepted by the accepting unit to the bidirectional communication network, wherein

the communication processing unit comprises;

a detecting unit that detects an error message concerning the transmission data from the bidirectional communication network;

a setting unit that sets the transmission data that includes the error message detected by the detecting unit, to be new transmission data;

an error processing unit that subjects the new transmission data set by the setting unit to a process of resolving an error corresponding to the error message; and

a transmitting unit that transmits the transmission data whose error has been resolved by the error processing unit to the bidirectional communication network to use the transmission data as the distribution data from the distribution source.

2. The communication terminal apparatus according to claim 1, wherein

the error processing unit, when the detecting unit detects an error message indicating that a capacity of the transmission data exceeds than a permissible amount for the bidirectional communication network to which the transmission data is transmitted, executes a process of reducing the capacity of the transmission data into which the error message is incorporated by an incorporating unit, to an amount that is equal to or less than the permissible amount.

3. The communication terminal apparatus according to claim 1, wherein

the receiving unit extracts the error message from the distribution data, when the distribution data received by the receiving unit is the transmission data that has been error-processed by the error processing unit.

4. The communication terminal apparatus according to claim 3, wherein

the accepting unit divides the accepted transmission data into the permissible amount for the bidirectional communication network, when the error message extracted from the distribution data by the receiving unit indicates that the capacity of the transmission data exceeds the permissible amount of the bidirectional communication network, and

the transmitting unit transmits the transmission data that has been divided by the accepting unit.

5. A distribution apparatus comprising:

a distributing unit that distributes distribution data using a unidirectional communication network; and

a receiving unit that receives transmission data from a terminal that is a distribution destination of the distribution data, using a bidirectional communication network, wherein

the distributing unit distributes the transmission data as the distribution data to a terminal that is a transmission source of transmission data that includes an error message received by the receiving unit, when the receiving unit receives transmission data that includes an error message from a terminal.

6. The distribution apparatus according to claim 5, wherein

the distributing unit distributes identification information of the terminal that is the transmission source of the transmission data including the error message received by the receiving unit, by attaching the identification information to the distribution data.

7. An error notification method of a communication terminal apparatus that receives by a unidirectional communication network and transmits by a bidirectional communication network, the error notification method comprising:

a receiving step of receiving, distribution data distributed through the unidirectional communication network;

an accepting step of accepting transmission data to be transmitted to a distribution source of the distribution data received at the receiving step;

a first transmitting step of transmitting the transmission data accepted at the accepting step to the bidirectional communication network;

a setting step of setting, when an error message is detected with respect to the transmission data from the bidirectional communication network, the transmission data including the detected error message to be new transmission data;

an error processing step of subjecting the new transmission data set at the setting step to a process of resolving an error corresponding to the error message; and

a second transmitting step of transmitting the transmission data whose error has been resolved at the error processing step, to the bidirectional communication network to use the transmission data as the distribution data from the distribution source.

9. An error notification program causing a computer to execute the error notification method according to claim 7.

8. An error notification method comprising:

a receiving step of receiving via a bidirectional communication network and by a transmitting unit of a distribution apparatus, transmission data from a terminal that is a distribution destination of the distribution data; and

a distributing step of distributing via a unidirectional communication network, by a distribution unit of the distribution apparatus and as distribution data, the transmission data to the terminal that is a transmission source of the transmission data received at the receiving step and includes an error message.

10. A computer-readable recording medium storing therein an error notification program that causes a computer to execute the error notification method according to claim 8.