Title:
IMAGE DATA MULTI-ADDRESS SYSTEM AND IMAGE DATA MULTI-ADDRESS METHOD
Document Type and Number:
Japanese Patent JP2643829
Kind Code:
B2
Abstract:
PURPOSE: To obtain image data multi-address system and image data multi- address method with high reliability.
CONSTITUTION: A control signal and image data are transmitted from a transmission station 1 to a satellite 31 via a satellite communication line 3. The satellite 31 receives this data and returns received data to the ground. This returned data is received by the transmission station 1 and the collation of transmitted data and received data is performed by a transmission signal monitoring part 113. When identity does not exist in the both of the data by the collation, the transmitted data transmitted the last time is retransmitted by adding a retransmission code to the transmitted data. This retransmitted data is returned again to the ground from the satellite 31. A reception station 2 receives these data, a signal reception control part 212 detects the retransmission code and an image reception control part 211 cancels the orignal data corresponding to the retranmitted data by this detection. By this procedure, the fault generated in the satellite communication line 3 is eliminated.
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Inventors:
WATANABE KAZUYOSHI
Application Number:
JP8818894A
Publication Date:
August 20, 1997
Filing Date:
April 26, 1994
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H04N1/00; H04B7/14; H04B7/26; H04B17/00; H04B17/40; H04L1/00; H04W4/06; (IPC1-7): H04N1/00; H04B7/14; H04B7/26; H04B17/00; H04L1/00
Attorney, Agent or Firm:
Maruyama Takao
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