Method for enhancing DRM authority, enhanced DRM authority content, and portable terminal using the same
First Claim
1. A method for enhancing a Digital Rights Management (DRM) authority, the method comprising:
- (a) permitting by the DRM authority a reproduction of a DRM content having a first division region to an nth division region, where n is a natural number;
(b) changing a first count value to an nth count value according to the reproduction of the DRM content permitted in step (a), wherein each of the first count value to the nth count value has a maximum number of reproduction times in order to limit a number of times by which reproduction is permitted for a corresponding division region; and
(c) preventing reproduction of the corresponding division region when a corresponding count value of the corresponding division region from among the first count value to the nth count value is equal to the maximum number of reproduction times.
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Accused Products
Abstract
A method for enhancing a Digital Rights Management (DRM) authority, a content having an enhanced DRM authority and a portable terminal using the same. Reproduction of divisional regions of the content is prevented when a corresponding count value is equal to a permitted maximum number of reproductions. The DRM authority includes: reproducing DRM content having a first division region to an nth division region, where n is a natural number; and changing a first count value to an nth count value according to reproduction of the DRM content, wherein the count value limits a number of reproduction times of the DRM content for the corresponding division region. A variety of parameters can be set for each individual region to change the count value.
88 Citations
25 Claims
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1. A method for enhancing a Digital Rights Management (DRM) authority, the method comprising:
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(a) permitting by the DRM authority a reproduction of a DRM content having a first division region to an nth division region, where n is a natural number; (b) changing a first count value to an nth count value according to the reproduction of the DRM content permitted in step (a), wherein each of the first count value to the nth count value has a maximum number of reproduction times in order to limit a number of times by which reproduction is permitted for a corresponding division region; and (c) preventing reproduction of the corresponding division region when a corresponding count value of the corresponding division region from among the first count value to the nth count value is equal to the maximum number of reproduction times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An enhanced DRM authority content module comprising:
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a DRM content module comprising DRM content divided into a first division region to an nth division region, where n is a natural number; and a license module permitting access of the DRM content and for limiting a number of reproduction times of the DRM content, wherein the license comprises; a first count value to an nth count value having a first permitted number of reproduction times to an nth permitted number of reproduction times, which designates the number of times up to which the first division region to the nth division region of the DRM content can be reproduced, respectively; a first reference time duration to an nth reference time duration serving as reference values for a reproduction time duration in order to change the first count value to the nth count value for the first division region to the nth division region of the DRM content, respectively; and a first usage time duration to an nth usage time duration increasing a corresponding count if an accumulated usage time duration obtained by accumulating each reproduction time duration for which the first division region to the nth division region of the DRM content are partially reproduced less than the reference time duration is equal to or greater than the reference time duration. - View Dependent Claims (15, 16, 17, 18)
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19. An enhanced DRM authority content system comprising:
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a DRM content module divided into a first division region to an nth division region, where n is a natural number; and a license module for limiting a number of reproduction times of the DRM content, wherein the license module comprises; a first count value to an nth count value having a first permitted number of reproduction times to an nth permitted number of reproduction times, which designate the number of times up to which the first division region to the nth division region of the DRM content can be reproduced, respectively; and a first reference time duration to an nth reference time duration serving as reference values for reproduction time duration in order to change the first count value to the nth count value for the first division region to the nth division region of the DRM content, respectively; and said license module restricts reproduction of the DRM content after a permitted number of reproduction times has been reached. - View Dependent Claims (20)
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21. An enhanced DRM authority content system comprising:
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a DRM content module having a first division region to an nth division region; and a license module for providing a decoding key for decoding an encryption of the DRM content and for limiting a number of reproduction times up to which the first division region to the nth division region of the DRM content can be reproduced.
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22. A portable terminal comprising:
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a radio frequency unit for receiving a DRM content having a first division region to an nth division region, where n is a natural number, and a license limiting a number of reproduction times of the DRM content from an external; a key input unit for generating a key signal for receiving and reproducing the DRM content; a memory for storing the DRM content and the license; a display unit for displaying an image and an audio processor for reproducing an audio signal according to reproduction of the DRM content; and a controller for controlling reproduction of the DRM content by activating a division region of the DRM content for which the number of reproduction times of the content is less than a permitted number of reproduction times based on the license. - View Dependent Claims (23, 24, 25)
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Specification