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Title:
COMMUNICATION SYSTEM STORED IN ARTIFICIAL SATELLITE
Document Type and Number:
Japanese Patent JPS57166746
Kind Code:
A
Abstract:

PURPOSE: To utilize transmission lines effectively by connecting a means which detects transmission errors, request retransmission and stores and retransmits data blocks to an artificial satellite.

CONSTITUTION: A transmission controlling part 20, a block check sequence operating part 22, a specific block detection generating part 24, a data block buffer area 26, and a retransmission controlling counter 28 are incorporated in a transmission device 10 fitted on an artificial satellite. The specific block detection generating part 24 detects and generates the responces A and NA of correct and error reception respectively and generates a data disuse information block D, the block check sequency operating part 22 detects a transmission error due to the check of block check sequence BCS of a received data block and the data block buffer area 26 has (n) data block storing areas and stores data blocks sent from the transmission device 10 to a receiving ground station 16 successively.


Inventors:
YAMAMOTO HISAO
MASE KENICHI
Application Number:
JP1981000050590
Publication Date:
October 14, 1982
Filing Date:
April 06, 1981
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
H04B7/15; H04B7/185; H04L1/16; H04L1/00; (IPC1-7): H04B7/14



 
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