DIGITAL CONTENTS BROWSER, PROGRAM TO REALIZE THE SAME AND STORAGE MEDIUM IN WHICH CONTENTS DATA IS RECORDED

摘要

PROBLEM TO BE SOLVED: To realize digital contents capable of preventing secondary use of contents data by copying it. SOLUTION: A digital contents browser is provided with an automatic ciphering means capable of deciphering a read ciphered file and leaving no deciphered result on a computer when a certain ciphered file is read by an optional execution program on the computer, a database contents browsing means to perform specification of retrieval conditions, interactive input of star of retrieval and display of a retrieval result of the contents data including one or more database files, an automatic ciphering control means to turn on an automatic ciphering function of the automatic ciphering means linked with the start of retrieval of the contents data and to turn off the automatic ciphering function linked with completion of retrieval and a database engine means to receive the data retrieval conditions from the database contents browsing means, retrieve database data deciphered by the automatic encrypting means and transfer its result to the data base contents browsing means.