Method and apparatus for simultaneous multicasting to a plurality of destinations
AssigneeMatsushita Graphic Communication Systems, Inc.
InventorTadanori Ipponyari
Life of this patent
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Abstract
A destination to which a line connection is not established is memorized in the process of simultaneous multicasting to a plurality of destinations. When another multicast communication starts, if the memorized destination is included in destinations, a call is primarily performed to a destination in the next order by skipping the memorized destination.
Claims15
A method for performing a plurality of multicasts, each of the plurality of multicasts attempting to establish a line connection to a plurality of destinations, the plurality of destinations of each multicast being independently determined, at least two of the plurality of multicasts having at least one common destination, the method comprising:
- storing each destination to which a line connection is not established in each multicast;
- deciding whether a destination to which an attempt is to be made to establish a line connection in a current multicast is a stored destination to which a line connection was not established in a previous multicast, and
- advancing to a subsequent destination in the current multicast without attempting to establish a line connection by calling to the stored destination to which a line connection was not established in the previous multicast.
A method for performing a plurality of multicasts, each of the plurality of multicasts attempting to call a plurality of destinations, the plurality of destinations of each multicast being independently determined, at least two of the plurality of multicasts having at least one common destination, the method comprising:
- detecting an occurrence of a communication error with respect to a destination of a multicast;
- identifying an error type of the detected communication error;
- attempting to call again to the destination when the error type is identified as recommunicatable, and advancing to a subsequent destination in the multicast without attempting to call again to the destination when the error type is identified as irrecommunicatable;
- and
- finishing a current multicast communication and shifting to a next multicast communication without attempting to call the destination when the error is irrecommunicatable.
A communication apparatus for performing multicasts comprising:
- a system that performs a plurality of multicasts, each multicast attempting to call a plurality of destinations, the plurality of destinations of each multicast being independently determined, at least two of the plurality of multicasts having at least one common destination;
- a system that sets a redial interval with respect to each destination to which a line connection is not established;
- a memory that registers error information concerning each destination to which a line connection is not established;
- a system that deletes the registered error information of a destination to which a line connection is completed;
- a system that starts a second multicast during the redial interval;
- and
- a system that controls a call order in a current multicast to attempt to call a destination of which no error information is registered in the memory such that, when error information of a first destination is registered in the memory, a call is attempted to a subsequent destination in the current multicast without attempting to call the first destination.
A communication apparatus for performing multicasts comprising:
- a system that performs a plurality of multicasts, each multicast attempting to call a plurality of destinations, the plurality of destinations of each multicast being independently determined, at least two of the plurality of multicasts having at least one common destination;
- a system that sets a redial interval for a destination to which a line connection is not established in a first multicast;
- a system that starts a second multicast during a redial interval;
- a memory that registers an error type of a communication error that occurred for a destination to which a line connection is not esablished;
- and
- a system that blocks a call attempt to a destination of which the error type is registered as irrecommunicatable, finishes a current multicast by completing remaing calls to subsequent destination in the current multicast and shifts to a next multicast without attempting to call the destination having an error registered as irrecommunicatable.
A communication apparatus for performing a plurality of multicasts, each attempting to call a plurality of destinations, the plurality of destinations of each multicast being independently determined, at least two of the plurality of multicasts having at least one common destination, the apparatus comprising:
- a system that performs a multicast to send paper document data to a plurality of destinations;
- a system that sets a redial interval for a destination to which a line connection is not established in a multicast;
- and
- a system that controls a call order such that when a destination with a redial interval set in a previous multicast is included in the destinations of a current multicast, advances to a next destination in the current multicast without attempting to call the destination with the set redial interval.
A communication apparatus for performing a plurality of multicasts, each attempting to call a plurality of destinations, the plurality of destinations of each multicast being independently determined, at least two of the plurality of multicasts having at least one common destination, the apparatus comprising:
- a system that performs multicasting to send a same paper document data to a plurality of destinations;
- a memory that registers error type information concerning a destination to which a line connection is not established in a multicast;
- a system that controls a current multicast to advance to a subsequent destination of the plurality of destinations without attempting to call a destination of which an error type is registered as irrecommunicatable, and that finishes a current multicast without attempting to call the destination of which an error type is registered as irrecommunicatable;
- and
- a system that shifts to a next multicast after finishing the current multicast.
Dependencies are inferred from the claim text.