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(If upper queueis empty.)

Unprocessed-segment waiting queue(Thread-safe list structure)

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

Databaseserver

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

segmentinfo

structure

Proccesing-segmentwaiting queue

Client

Termination reportfrom a client

Deletion

Status info (e.g. download time orprocessing time) are also reported.

Segment information structure(C++)Segment ID

a priori fileFTP server IPFile name

VLBI site1FTP server IPFile name (time-sliced raw data)

VLBI site2FTP server IPFile name (time-sliced raw data)

VLBI site3FTP server IP

XML SQL

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