Method and system for mastering and distributing enhanced color space content

• US 8,994,744 B2
• Filed: 10/27/2005
• Issued: 03/31/2015
• Est. Priority Date: 11/01/2004
• Status: Active Grant

• Current Assignee: Interdigital Vc Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Sterling, Michael Allan, O'Donnell, Eugene Murphy
• Primary Examiner(s): Caschera, Antonio A
• Application Number:
  US11/665,809
• Publication Number:
  US 20070291179A1
• Time in Patent Office: 3,442 Days
• US Class Current: 345/600
• CPC Class Codes: H04N 1/6058 Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut
• CPC Class Codes: H04N 1/64 Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor H04N19/00 takes precedence
• CPC Class Codes: H04N 9/64 Circuits for processing colour signals H04N9/77 takes precedence; camera processing pipelines for processing colour signals H04N23/84

Abstract

A method and system for mastering and distributing enhanced color space content for different display devices (target color space) having display capabilities beyond that of CRT color space. The content creator(s) establishes base or reference color space and enhanced color space data for each target color space. The enhanced color space data is stored as metadata and transmitted over an enhanced color channel separately from the base/reference color space. Both the base/reference data and metadata are encoded before transmission and decoded on the consumer side either by a separate decoder or a display device having an integrated decoder. In other aspects of the invention, auxiliary data relating to the target color space, such as, for example, brightness, luminance, contrast and other display settings can be transmitted over the enhanced color channel and decoded to control the target color space settings (i.e., display settings). The color adjustment metadata could be included in the auxiliary data or maintained separate from the same depending on the desired implementation.

Claims

1. A system for modifying standard system content that is compatible with a standard display device to obtain content with an enhanced color rendition suitable for an enhanced display device, the system comprising:

a receiver for receiving the standard system content and metadata, wherein the metadata is derived from color space difference between the enhanced display device and the standard display device;

a decoder for decoding the standard system content and metadata to obtain decoded standard system content and color space difference;

means for receiving and decoding auxiliary data representing colors that are outside of the enhanced display device'"'"'s gamut;

means for converting the decoded auxiliary data into a format compatible with the enhanced display device; and

means for combining the converted auxiliary data with the decoded standard system content and color space difference for producing the content with the enhanced color rendition in the enhanced color space; and

means for providing the enhanced color rendition content for display on the enhanced display device.

2. The system of claim 1, wherein at least one of the metadata and auxiliary data includes dynamic display information relating to at least one adjustment to the enhanced display device.

3. The system of claim 2, wherein the at least one adjustment to the enhanced display device includes at least one of brightness, contrast and luminance.

4. A system for providing standard system content compatible with a standard display device for use in converting to content with an enhanced color rendition suitable for an enhanced display device, the system comprising:

at least one processor for deriving metadata from color space difference between the enhanced display device and the standard display device, and for obtaining auxiliary data that represents colors outside of the enhanced display device'"'"'s gamut;

means for encoding the standard system content, the metadata and the auxiliary data for at least one of;

distribution on packaged media and transmission over a channel.

5. The system according to claim 4,wherein at least one of the metadata and auxiliary data includes dynamic display information relating to at least one adjustment to the enhanced display device.

6. The system according to claim 5, wherein the at least one adjustment to the enhanced display device includes at least one of brightness, contrast and luminance.

7. A system for modifying standard system content that is compatible with a standard display device to obtain content with an enhanced color rendition suitable for an enhanced display device, the system comprising:

at least one receiver configured to receive the standard system content and metadata, wherein the metadata is derived from color space difference between the enhanced display device and the standard display device;

at least one decoder configured to decode the standard system content and metadata to obtain decoded standard system content and color space difference;

the at least one receiver and the at least one decoder further configured to receive and decode auxiliary data representing colors that are outside of the enhanced display device'"'"'s gamut;

at least one processor configured to convert the decoded auxiliary data into a format compatible with the enhanced display device;

to combine the converted auxiliary data with the decoded standard system content and color space difference for producing the content with the enhanced color rendition in the enhanced color space; and

to provide the enhanced color rendition content for display on the enhanced display device.

8. The system of claim 7, wherein at least one of the metadata and auxiliary data includes dynamic display information relating to at least one adjustment to the enhanced display device.

9. The system of claim 7, wherein the at least one adjustment to the enhanced display device includes at least one of brightness, contrast and luminance.

10. A system for providing standard system content compatible with a standard display device for use in converting to content with an enhanced color rendition suitable for an enhanced display device, the system comprising:

at least one processor configured to derive metadata from color space difference between the enhanced display device and the standard display device, and for obtaining auxiliary data that represents colors outside of the enhanced display device'"'"'s gamut;

at least one encoder configured to encode the standard system content, the metadata and the auxiliary data for at least one of;

distribution on packaged media and transmission over a channel.

11. The system according to claim 10, wherein at least one of the metadata and auxiliary data includes dynamic display information relating to at least one adjustment to the enhanced display device.

12. The system according to claim 10, wherein the at least one adjustment to the enhanced display device includes at least one of brightness, contrast and luminance.

13. A method for modifying standard system content that is compatible with a standard display device to obtain content with an enhanced color rendition suitable for an enhanced display device, the system comprising:

receiving, using at least one receiver, the standard system content and metadata, wherein the metadata is derived from color space difference between the enhanced display device and the standard display device;

decoding, using at least one decoder, the standard system content and metadata to obtain decoded standard system content and color space difference;

receiving and decoding, using the at least one receiver and decoder, auxiliary data representing colors that are outside of the enhanced display device'"'"'s gamut;

converting the decoded auxiliary data into a format compatible with the enhanced display device;

combining the converted auxiliary data with the decoded standard system content and color space difference for producing the content with the enhanced color rendition in the enhanced color space; and

providing the enhanced color rendition content for display on the enhanced display device;

wherein the converting, the combining and the providing steps are performed by at least one processor.

14. The method of claim 13, wherein at least one of the metadata and auxiliary data includes dynamic display information relating to at least one adjustment to the enhanced display device.

15. The method of claim 13, wherein the at least one adjustment to the enhanced display device includes at least one of brightness, contrast and luminance.