Browse Prior Art Database

Advanced use of DVD function for Learning contents

IP.com Disclosure Number: IPCOM000020104D
Original Publication Date: 2003-Oct-27
Included in the Prior Art Database: 2003-Oct-27
Document File: 3 page(s) / 29K

Publishing Venue

IBM

Abstract

Disclosed is a method for tracing and recording the history of DVD (Digital Versatile Disc) playback by using global parameters (GPRM(s)) of a DVD player and by making a password from the parameters in order to administer the progress of educational contents by the user.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 35% of the total text.

Page 1 of 3

Advanced use of DVD function for Learning contents

Disclosed is a method for tracing and recording the history of DVD (Digital Versatile Disc) playback by using global parameters (GPRM(s)) of a DVD player and by making a password from the parameters in order to administer the progress of educational contents by the user.

Since a standard DVD player loses all the data after the power supply is turned off, it is impossible to reproduce the same condition of a DVD player application as intended and the value of GPRMs without any information. By using GPRMs this is the idea of the solution for the score calculation and informational analysis of an e-learning DVD player application which is taken over by various learning record/history. This would expand the ranges of application for DVD contents as well as make the application of educational contents effective and wide range. This would also make it possible to make a lecture, to take tests, to take a record/history from DVD contents to analyze it, and to perform comprehensive evaluation.

A standard DVD player is equipped with sixteen GPRMs, and each GPRM can handle a positive number which cannot be extended more than 65535 including 0. A DVD player application can use them by defining usage of the parameter of contents. With this idea, the history of a user is allocated to an alphabet provided by program at the end of a chapter. For example, at the end of a chapter, a user is provided an alphabet as a password. A password for a chapter is set up arbitrary, and the password changes when going to a next chapter.

For example, sixteen kinds of information can be given if the value of 1 and 0 is assigned to four GPRMs respectively. It considers a 4-bit binary data, and can be expressed by 16 characters with alphabets. By applying this method, information such as a part of progress in a chapter or a paragraph unit, results (score) ,corrections of questions and its tendency can be allocated to the value of GPRMs. Various conditions can be outputted as a password. In order to reproduce the information,a user needs to keep a note of the outputted password. It is reproduced by GPRMs of a standard DVD player by inputting the password provided at the time of resumption.

The logic which decodes the inputted password is created beforehand and programmed on a DVD player application in the form of a kind program. GPRMs are reproduced by making the alphabet of a password decode. With outputting the image (or a still picture and a sound) corresponding to it, a user can successfully go back to the previous point and resume the history. In addition, characters such as mixed alphabets are allocated because a standard DVD player does not have the function which displays the value of GPRMs directly. If DVD contents are created in a way mentioned above, it would enable a lecturer to analyze a history and a result by looking at the password submitted by a user.

Fig.1 and Tables 1 through 4 are the flowcharts...