METHOD AND DEVICE FOR DRM FILE CONVERSION

• US 20110270854A1
• Filed: 06/24/2011
• Published: 11/03/2011
• Est. Priority Date: 12/25/2008
• Status: Active Grant

• Current Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Device Company Limited (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhang, Yajun, Li, Yingwei, Yuan, Zhiquan, Zhang, Bo
• Granted Patent: US 8,862,601 B2
• Time in Patent Office: Days
• US Class Current: 707/755
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: H04L 51/00 User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
• CPC Class Codes: H04L 51/066 Format adaptation, e.g. format conversion or compression

Abstract

A method for DRM file conversion is provided in an embodiment of the present disclosure, including: parsing a multipurpose Internet mail extensions (MIME) parameter in a rights type system of a DRM file to obtain file types and rights formats to which the DRM file can be converted; and converting, according to the file types and rights formats to which the DRM file can be converted, the DRM file into a file type and a rights format in the file types and rights formats to which the DRM file can be converted, where the file type and rights format is supported by a DRM system that receives the DRM file. A device for DRM file conversion is provided in another embodiment of the present disclosure.

Claims

1. A method for Digital Rights Management (DRM) file conversion, comprising:

parsing a multipurpose Internet mail extensions (MIME) parameter in a rights type system of a DRM file to obtain file types and rights formats to which the DRM file can be converted; and

converting, according to the file types and rights formats to which the DRM file can be converted, the DRM file into a file type and a rights format in the file types and rights formats to which the DRM file can be converted, wherein the file type and rights format is supported by a DRM system that receives the DRM file.

2. The method according to claim 1, wherein the operation before parsing the MIME parameter in the rights type system of the DRM file to obtain file types and rights formats to which the DRM file can be converted further comprises:

adding at least one MIME parameter to the rights type system of the DRM file, wherein the MIME parameter comprises file types and rights formats to which the DRM file can be converted.

3. The method according to claim 2, wherein each MIME parameter comprises a file type element and a rights format element, and

the file type element comprises the file types to which the DRM file can be converted;

and

the rights format element comprises the rights formats to which the DRM file can be converted.

4. The method according to claim 3, wherein when multiple MIME parameters exist, the MIME parameters in the rights type system of the DRM file are parsed respectively to obtain all file types and rights formats to which the DRM file can be converted, and the DRM file is converted, according to an instruction entered by a user, into a file type and rights format supported by a DRM system that receives the DRM file in the file types and rights formats to which the DRM file can be converted.

5. The method according to claim 4, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in a system element, and the procedure for obtaining the file types and rights formats to which the DRM file can be converted comprises:

parsing an export element to obtain the system element;

parsing the obtained system element to obtain system IDs of a DRM system that receives the DRM file; and

parsing the MIME parameter according to a system ID selected, by a user, from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted.

6. The method according to claim 3, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in a system element, and the procedure for obtaining the file types and rights formats to which the DRM file can be converted comprises:

parsing an export element to obtain the system element;

parsing the obtained system element to obtain system IDs of a DRM system that receives the DRM file; and

parsing the MIME parameter according to a system ID selected, by a user, from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted.

7. The method according to claim 2, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in a system element, and the procedure for obtaining the file types and rights formats to which the DRM file can be converted comprises:

parsing an export element to obtain the system element;

parsing the obtained system element to obtain system IDs of a DRM system that receives the DRM file; and

parsing the MIME parameter according to a system ID selected, by a user, from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted.

8. The method according to claim 1, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in a system element, and the procedure for obtaining the file types and rights formats to which the DRM file can be converted comprises:

parsing an export element to obtain the system element;

parsing the obtained system element to obtain system IDs of a DRM system that receives the DRM file; and

parsing the MIME parameter according to a system ID selected, by a user, from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted

9. A device for Digital Rights Management (DRM) file conversion, comprising:

a parsing module, configured to parse an MIME parameter in a rights type system of a DRM file to obtain file types and rights formats to which the DRM file can be converted; and

a converting module, configured to convert, according to the file types and rights formats to which the DRM file can be converted, the DRM file into a file type and a rights format in the file types and rights formats to which the DRM file can be converted, wherein the file type and rights format is supported by a DRM system that receives the DRM file.

10. The device according to claim 9, further comprising:

an extending module, configured to add at least one MIME parameter to the rights type system of the DRM file, wherein the MIME parameter comprises file types and rights formats to which the DRM file can be converted.

11. The device according to claim 10, wherein each MIME parameter comprises a file type element and a rights format element, and

the file type element comprises the file types to which the DRM file can be converted;

and

the rights format element comprises the rights formats to which the DRM file can be converted.

12. The device according to claim 11, wherein when multiple MIME parameters exist, the MIME parameters in the rights type system of the DRM file are parsed respectively to obtain all file types and rights formats to which the DRM file can be converted, and the converting module is configured to convert, according to an instruction entered by a user, the DRM file into a file type and rights format supported by a DRM system that receives the DRM file in the file types and rights formats to which the DRM file can be converted.

13. The device according to claim 12, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in the system element, and the parsing module further comprises:

an export element parsing unit, configured to parse the export element to obtain the system element;

a system element parsing unit, configured to, by parsing the system element obtained by the export element parsing unit, obtain system IDs of the DRM system that receive the DRM file; and

an MIME parameter parsing unit, configured to parse the MIME parameter according to a system ID selected by the user from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted.

14. The device according to claim 11, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in the system element, and the parsing module further comprises:

an export element parsing unit, configured to parse the export element to obtain the system element;

a system element parsing unit, configured to, by parsing the system element obtained by the export element parsing unit, obtain system IDs of the DRM system that receive the DRM file; and

a MIME parameter parsing unit, configured to parse the MIME parameter according to a system ID selected by the user from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted.

15. The device according to claim 10, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in the system element, and the parsing module further comprises:

an export element parsing unit, configured to parse the export element to obtain the system element;

a system element parsing unit, configured to, by parsing the system element obtained by the export element parsing unit, obtain system IDs of the DRM system that receive the DRM file; and

a MIME parameter parsing unit, configured to parse the MIME parameter according to a system ID selected by the user from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted.

16. The device according to claim 9, wherein the rights type system of the DRM file is OMA DRM 2.0, the MIME parameter is included in the system element, and the parsing module further comprises:

an export element parsing unit, configured to parse the export element to obtain the system element;

a system element parsing unit, configured to, by parsing the system element obtained by the export element parsing unit, obtain system IDs of the DRM system that receive the DRM file; and

an MIME parameter parsing unit, configured to parse the MIME parameter according to a system ID selected by the user from the obtained system IDs, to obtain the file types and rights formats to which the DRM file can be converted.