专利名称：METERING RETRIEVAL OF ENCRYPTED DATA
STORED IN CUSTOMER DATA RETRIEVALTERMINAL
发明人：KATZNELSON, Ron, D.申请号：EP87906513.4申请日：19870908公开号：EP0282570B1公开日：19940622
摘要：a system, which is used to monitor and record the data of a compact disk read-only memory (cd-rom) to file) containing data that need to access, and has a terminalauthorization and key distribution, and a number of terminals data mining for users.briefstype cd-rom (37) are located in the terminals. the terminal allows the retrieval of data byauthorized users of the terminals, by providing an encryption key (13) in order to enablethem to extract the data and a signal of credit authentication (14) intended to reduce theamount of data to milking system.the encryption key is encrypted for communicationwith user terminals of single key unit (42) which are stored in the respective user
terminals.the user terminal (22) to limit the quantity of extracted data files in accordancewith the signal of credit records (23) the amount of data extracted from the files, andprovides a terminal authentication authorization (62) of the level of data extract arethose files.the memory (37) includes data from different data providers, and the terminalusers separately registers (23) the extraction of data from the files of the differentvendors.
申请人：TITAN CORP,CABLE HOME COMMUNICATION CORP
地址：US,US
国籍：US,US
代理机构：Blatchford, William Michael
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