Method and apparatus for transcoding content with permissible operations authorized by content creator

• US 7,213,072 B2
• Filed: 05/08/2001
• Issued: 05/01/2007
• Est. Priority Date: 05/08/2001
• Status: Expired due to Fees

• Current Assignee: WSOU Investments, LLC (WSOU Holdings, LLC)
• Original Assignee: Nokia Mobile Phones Incorporated (Nokia Corporation)
• Inventors: Grassel, Guido, Coulombe, Stephane
• Primary Examiner(s): Flynn, Nathan J.
• Assistant Examiner(s): Hu, Jinsong
• Application Number:
  US09/851,527
• Publication Number:
  US 20020169823A1
• Time in Patent Office: 2,184 Days
• Field of Search: 709/229, 709/248, 713/200
• US Class Current: 709/229
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/762 at the source reformatting of additional data in video distribution servers H04N21/2355
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/565 Conversion or adaptation of application format or content adding application control or application functional data H04L67/561
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A method and apparatus is provided for transcoding content communicated in a network. The method features the step of transcoding the content based on permissible transcoding operations authorized by a content creator. The permissible transcoding operations include any transformation, alteration or manipulation of the content. The permissible transcoding operations include: a resolution reduction for reducing a resulting resolution of the content; an aspect ratio modification for specifying a maximum deformation that can be applied to the content when modifying its resolution; a color and bits per pixel modification for specifying if an image can be converted to gray scale or not, and minimum bits per pixel (bpp) or number of colors (or levels) that can be used; cropping for specifying a region of an original picture that must be preserved; and a quality reduction for allowing the content to be further modified by adding some distortions to an image. The content may be images, graphics, video or audio.

Claims

1. A network element comprising:

a transcoder for transcoding context of a content creator or provider that is presented in a certain form on one type of support, terminal, node or device,

the transcoder having a transcoder operation module configured for transcoding the content based on one or more permissible transcoding operations authorized by the content creator or provider so as to present the content in a different and acceptable form on another type of support terminal, node or device, and

the transcoder responding to a signal containing the content and information about the permissible transcoding operations that may be applied on the content permissible by the content creator or provider, applying the permissible transcoding operations on the content and providing a transcoded content signal containing information about a transcoded content.

2. A network element according to claim 1, wherein the network element is a creator terminal, a content provider, a proxy/gateway or a client terminal.

3. A network element according to claim 1, wherein the permissible transcoding operations include any transformation, alteration or manipulation of the content permitted by the content creator or provider.

4. A network element according to claim 1, wherein the permissible transcoding operations include a resolution reduction module configured for reducing the resolution of the content.

5. A network element according to claim 4, wherein the content is reduced by either a maximum decimation factor or ratio or a minimum resolution in pixels.

6. A network element according to claim 1, wherein the permissible transcoding operations include an aspect ratio modification for specifying a maximum deformation that can be applied to the content when modifying its resolution.

7. A network element according to claim 1, wherein the permissible transcoding operations include a color and bits per pixel modification for specifying if an image can be converted to gray scale or not, and minimum bits per pixel or number of colors or levels that can be used.

8. A network element according to claim 1, wherein the permissible transcoding operations include cropping for specifying a region of an original picture that must be preserved.

9. A network element according to claim 1, wherein the permissible transcoding operations include a quality reduction for allowing the content to be further modified by adding some distortions to an image.

10. A network element according to claim 1, wherein a sequence of permissible image transcoding operations for image content includes cropping, an aspect ratio modification, a color and bits per pixel modification and a resolution reduction.

11. A network element according to claim 1, wherein the content includes images, graphics, video or audio.

12. a method comprising:

transcoding content of content creator or provider that is presented in a certain form on one type of support terminal, node or device, based on one or more permissible transcoding operations authorized by the content creator or provider so as to present the content in a different and acceptable form on another type of support terminal, node or device, where the permissible transcoding operations include any transformation, alternation or manipulation of content permitted by the content creator or provider.

13. A method according to claim 12, wherein the method is performed in a creator terminal, a content provider, a proxy/gateway, a client terminal, or a combination thereof.

14. A method according to claim 12, wherein the permissible transcoding operations include a resolution reduction for reducing the resolution of the content.

15. A method according to claim 14, wherein the content is reduced by either a maximum decimation factor or ratio or a minimum resolution in pixels.

16. A method according to claim 12, wherein the permissible transcoding operations include an aspect ratio modification for specifying a maximum deformation that can be applied to the content when modifying its resolution.

17. A method according to claim 12, wherein the permissible transcoding operations include a color and bits per pixel modification for specifying if an image can be converted to gray scale or not, and minimum bits per pixel or number of colors or levels that can be used.

18. A method according to claim 12, wherein the permissible transcoding operations include cropping for specifying a region of an original picture that must be preserved.

19. A method according to claim 12, wherein the permissible transcoding operations include a quality reduction for allowing the content to be further modified by adding some distortions to an image.

20. A method according to claim 12, wherein a sequence of permissible image transcoding operations for image content include cropping, an aspect ratio modification, a color and bits per pixel modification and a resolution reduction.

21. A method according to claim 12, wherein wherein the content includes images, graphics, video or audio.

22. A network comprising:

a network element with a transcoder for transcoding content of a content creator or provider that is presented in a certain form on one type of support terminal, node or device, the transcoder having a transcoder operation module configured for transcoding the content based on permissible transcoding operations authorized by the content creator or provider; and

a client terminal having a respective transcoder with a respective transcoder operation module configured for at least partially transcoding the content based on permissible transcoding operations authorized by the content creator or provider.

23. A network according to claim 22, wherein the network includes a creator terminal, a content provider, a proxy/gateway, a client terminal or a combination thereof, one or more of which having a respective transcoder with a respective transcoder operation module configured for transcoding the content based on permissible txanscoding operations authorized by the content creator or provider.

24. A network according to claim 22, wherein the network includes a content provider having a respective transcoder with a respective transcoder operation module configured for at least partially transcoding the content based on permissible transcoding operations authorized by the content creator or provider.

25. A network according to claim 22, wherein the network includes a proxy/gateway having a respective transcoder with a respective transcoder operation module configured for at least partially transcoding the content based on permissible transcoding operations authorized by the content creator or provider.