Time stamp generating system
First Claim
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1. A time stamp generating system comprising:
- a time distribution server; and
a user PC that holds time certification objective data,wherein said time distribution server repeatedly generates time data corresponding to a time point and independent from the time certification objective data, and repeatedly distributes said time data; and
said user PC computes time stamp generating data by using said time certification objective data as an input in a predetermined manner, acquires the time data based on an intended time point, distributed from said time distribution server, and generates a time stamp on the basis of said time data and said time stamp generating data computed by using the time certification objective data as an input.
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Abstract
A time stamp generating system has a time distribution server for generating time data depending on time and a user PC for holding time certification objective digital data. The time distribution server generates time data corresponding to a time point and distributes the time data. The user PC calculates time stamp generating data by using the time certification objective data as an input, acquires the time data generated by the time distribution server, and processes the time data on the basis of the time stamp generating data to obtain a time stamp.
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Citations
8 Claims
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1. A time stamp generating system comprising:
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a time distribution server; and a user PC that holds time certification objective data, wherein said time distribution server repeatedly generates time data corresponding to a time point and independent from the time certification objective data, and repeatedly distributes said time data; and said user PC computes time stamp generating data by using said time certification objective data as an input in a predetermined manner, acquires the time data based on an intended time point, distributed from said time distribution server, and generates a time stamp on the basis of said time data and said time stamp generating data computed by using the time certification objective data as an input. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A time stamp generating system comprising:
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a time distribution server; and a user PC that holds time certification objective digital data, wherein said user PC computes time stamp generating data by using the time certification objective data as an input in a predetermined manner and transmits said time stamp generating data to said time distribution server; and said time distribution server repeatedly generates time data corresponding to a time point and independent from the time certification objective digital data, receives said time stamp generating data from said user PC, processes said time data on the basis of said time stamp generating data to obtain a time stamp, and repeatedly transmits said time stamp to said user PC.
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Specification