05761651 is referenced by 46 patents and cites 47 patents.

A software charging system includes a utilization permitting device for giving permission to use a software storing medium storing ciphered programs or data (software); and an authorization center capable of communicating with the utilization permitting device for setting a utilizable amount, totalling utilization amounts and charging a user. The utilization permitting device includes: a utilization permission processing part having a clock for obtaining date and time data, and having a date and time data storing unit for storing obtained date and time data until obtaining next data and time data; and a utilization amount managing part for calculating a software utilization amount of an end user. A software utilization amount is managed based on the number of days at the utilization permission processing part.

Title
Software charging system and software data utilization permitting device
Application Number
8/490049
Publication Number
5761651
Application Date
June 13, 1995
Publication Date
June 2, 1998
Inventor
Masahiro Matsuda
Kawasaki
JP
Masahiko Takenaka
Kawasaki
JP
Noboru Iwayama
Kawasaki
JP
Naoya Torii
Kawasaki
JP
Takayuki Hasebe
Kawasaki
JP
Agent
Staas & Halsey
Assignee
Fujitsu
JP
IPC
G06F 17/60
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