PROGRAM AND STORAGE MEDIUM, AND REPRODUCING APPARATUS

Title:

PROGRAM AND STORAGE MEDIUM, AND REPRODUCING APPARATUS

Document Type and Number:

Japanese Patent JP2005094277

Kind Code:

A

Abstract:

To provide a technology whereby even an apparatus not connected to a network can reproduce AV data under a limited viewing / listening time and an encryption algorithm of a password can easily be revised.

A program is used, which comprises the steps of: acquiring a first medium identification number recorded on a recording medium; acquiring a present time; acquiring a password; calculating a second medium identification number and a validated date from the password; comparing the first medium identification number with the second medium identification number: and comparing the present time with the validated date, and the program controls a reproducing apparatus to reproduce prescribed information in a recording medium when the first medium identification number is coincident with the second medium identification number and the present time is within the validated date. Further, the program is recorded on a disk.

Inventors:

SUGIMURA NAOZUMI
IMAIDE TAKUYA
YOSHIDA SUSUMU
KATO HISAHIRO
WATANABE AKINOBU
SHIMODA NOZOMI

Application Number:

JP2003323902A

Publication Date:

April 07, 2005

Filing Date:

September 17, 2003

Export Citation:

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Assignee:

HITACHI LTD

International Classes:

G06Q10/00; G06F1/00; G06F12/14; G06F17/00; G06F21/00; G06Q30/06; G06Q50/00; G06Q99/00; G11B7/007; G11B19/02; G11B19/12; G11B20/00; G11B20/10; G11B27/00; H04K1/00; H04N5/91; (IPC1-7): H04N5/91; G06F17/60; G11B20/10; G11B27/00

Attorney, Agent or Firm:

Yasuo Sakuta

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