US 9185268

US Patent 9185268, titled "Methods and systems for displays with chromatic correction with differing chromatic ranges," was issued on November 10, 2015, from an application filed on December 14, 2007. The current assignee is InterDigital Madison Patent Holdings SAS, and the inventors are Ingo Tobias Doser, Jurgen Stauder, and Bongsun Lee.

Abstract:
The patent describes methods and systems for color correcting displays that have different color gamuts. This involves performing color correction on source picture content. The process includes mastering the source content to create a color-corrected version specifically for display on non-reference type displays (those with a non-reference color gamut). Additionally, metadata is generated for a color gamut mapping. This metadata facilitates the color transformation of the mastered content for display on reference type displays (those with a reference color gamut). A key aspect is that the source picture content is mastered only for the non-reference type displays.

Independent Claims Overview:

• Claim 1 (Method): This claim outlines a method for color correction where source picture content is mastered for non-reference type displays (those with a non-reference color gamut). It further involves generating metadata for a color gamut mapping, which transforms this mastered content for display on reference type displays (those with a reference color gamut). The core limitation is that the source content is mastered only for the non-reference type displays.

• Claim 6 (Method): This independent method claim also focuses on color correction of source picture content for different display types. It includes mastering the content for non-reference type displays and also mastering the content for reference type displays. The mastering for reference type displays is achieved by applying a color gamut mapping to the content already mastered for the non-reference type displays.

• Claim 12 (System): This claim describes a system for color correcting, comprising a color correction module and a color gamut mapping module. The color correction module performs color correction on source picture content to provide mastered content for non-reference type displays. The color gamut mapping module generates metadata for a subsequent color gamut mapping to transform the mastered content for reference type displays. Similar to Claim 1, the source content is mastered only for the non-reference type displays.

• Claim 15 (System): This independent system claim outlines a system with a color correction module that masters source picture content for non-reference type displays. It also includes a color gamut mapping module that performs a color gamut mapping on the content mastered for non-reference displays to produce mastered content for reference type displays.

• Claim 20 (System - Means-Plus-Function): This claim is a "means for" claim, detailing a system with "means for performing color correction." This means for performing color correction includes "means for mastering" the source content for non-reference type displays and "means for generating metadata" for a color gamut mapping to transform that content for reference type displays. The source content is mastered only for non-reference type displays.

• Claim 25 (System - Means-Plus-Function): This is another "means for" claim for a color correcting system. The "means for performing color correction" comprises "means for mastering" the source content for non-reference type displays, and also "means for mastering" the source content for reference type displays, where this second mastering uses a color gamut mapping applied to the content mastered for the non-reference type displays.

CAFC 2026 Dockets:
A direct search of the CAFC 2026 dockets for patent number US9185268 did not yield any explicit case listings. However, the Google Patents entry for US9185268 indicates that a "PTAB case IPR2026-00252 filed (Pending)" and a "US case filed in California Central District Court" are associated with this patent. The specifics of these cases are not detailed in the provided CAFC docket search results.

Known litigation involving US patent 9185268 includes the following cases:

1. PTAB Inter Partes Review (IPR)

   • Plaintiff(s): Unified Patents (inferred as the petitioner based on the source of information).
   • Defendant(s): InterDigital Madison Patent Holdings SAS (current assignee of the patent).
   • Jurisdiction: Patent Trial and Appeal Board (PTAB).
   • Case Number: IPR2026-00252.
   • Filing Date: Not explicitly stated, but the case number indicates it was filed in 2026.
   • Outcome/Current Status: Pending.

2. US District Court Case

   • Plaintiff(s): Not specified in the provided information.
   • Defendant(s): Not specified in the provided information.
   • Jurisdiction: California Central District Court.
   • Case Number: 2:25-cv-00895.
   • Filing Date: Not explicitly stated, but the case number indicates it was filed in 2025.
   • Outcome/Current Status: Listed as "litigation," implying an active or pending status without a final outcome yet.

Proceedings overview

Currently, there is one active AIA trial proceeding on US Patent 9,185,268. This Inter Partes Review (IPR) is in the "Pending" status, meaning the PTAB has not yet decided whether to institute a trial. For a defendant, this indicates that the patent is currently being challenged, but no claims have been invalidated or sustained by the PTAB yet.

IPR2026-00252 — Dolby Laboratories, Inc. et al. v. InterDigital Madison Patent Holdings SAS

• Type: Inter Partes Review
• Filed: 2026-02-09
• Status: Pending. The petition has been filed, and the PTAB is currently reviewing it to decide whether to institute a trial.
• Judge panel: Not yet publicly available as the institution decision has not been rendered.
• Petition grounds: Details regarding specific claims challenged, prior art cited, and statutory bases (§ 102 / § 103) are not publicly available at this stage without access to the full petition document.
• Institution decision: Not yet issued. The statutory deadline for the institution decision is generally six months from the date of the Patent Owner's preliminary response, or if no preliminary response is filed, six months from the due date of the preliminary response. Given the filing date of 2026-02-09, the institution decision is expected around August 2026.
• Final Written Decision: Not applicable; no decision has been issued.
• Settlement / termination: Not applicable; the proceeding is active and pending institution.
• Appeal: Not applicable.
• Defensive value: This proceeding indicates that Dolby Laboratories, Inc. is actively challenging the patent. If a trial is instituted, it could lead to claim invalidation, which would be highly beneficial for defendants. However, until institution, no definitive impact on the patent's claims exists.

Strategic summary

Currently, all claims of US Patent 9,185,268 remain UNTESTED by the PTAB, as the sole IPR proceeding (IPR2026-00252) is still in the preliminary review phase before institution. No claims have been canceled or sustained by the PTAB at this time.

The estoppel landscape has not yet formed for this patent. If IPR2026-00252 is instituted and proceeds to a Final Written Decision, § 315(e)(2) would bar the petitioner (Dolby Laboratories, Inc. et al.) and their privies from raising any ground that was raised or reasonably could have been raised in the IPR regarding the challenged claims. For a defendant currently facing assertion, this means all prior-art grounds remain available for potential challenges outside of a privy relationship with the current petitioner.

There is no discernible pattern of multiple IPRs on this patent by the same petitioner, as only one IPR has been filed to date. The current assignee, InterDigital Madison Patent Holdings SAS, has not yet had an opportunity to pursue PTAB appeals, as no Final Written Decision has been issued.

Recommended next steps

• Monitor IPR2026-00252 closely: The most critical upcoming milestone is the institution decision, expected around August 2026. This decision will determine whether a trial is instituted and which claims and grounds will be considered. The status can be tracked on the USPTO PTAB E2E portal.
• Review the petition: If you are a defendant, obtaining and reviewing the petition filed by Dolby Laboratories, Inc. for IPR2026-00252 would be crucial. This would provide insight into the specific claims challenged and the prior art asserted, which can inform your own defensive strategy.
• Assess claim independence: Understand which independent claims are being asserted against you in any demand letter and how they relate to the claims challenged in IPR2026-00252.
• Consider joining or filing a separate challenge: Depending on the outcome of the institution decision and your specific situation, you may consider filing your own IPR or, in certain circumstances, exploring options to join the existing IPR if the institution decision is favorable and the grounds align with your interests.

Inventors

• Ingo Tobias Doser (Employer: Thomson Licensing SAS)
• Jurgen Stauder (Employer: Thomson Licensing SAS)
• Bongsun Lee (Employer: Thomson Licensing SAS)

All inventors were employed by Thomson Licensing SAS at the time of filing, as indicated by the original assignment record.

Original assignee

The original assignee named on the issued patent is Thomson Licensing SAS.
Thomson Licensing SAS (formerly Thomson S.A. and later Technicolor SA) was a major global player in consumer electronics, broadcast technology, and content creation, and as such, it is highly likely they shipped products embodying the claims related to display chromatic correction. Their primary line of business evolved over time, encompassing various aspects of media and entertainment technology, including research and development, manufacturing, and licensing.
Thomson Licensing SAS's assets and intellectual property related to its patent licensing business were later acquired by InterDigital in 2018.

Assignment timeline

• 2007-09-26 (executed) / recorded 2009-10-02 — Reel 022982/0754
  • Conveyance: ASSIGNMENT
  • Assignor: STAUDER, JURGEN; DOSER, INGO TOBIAS; LEE, BONGSUN
  • Assignee: THOMSON LICENSING
  • Correspondent: BLAKELY, SOKOLOFF, TAYLOR & ZAFMAN LLP, 1279 OAKMEAD PARKWAY, SUNNYVALY, CA 94085-4040
  • Context: Original assignment from inventors to the employing company.
• 2017-01-13 (executed) / recorded 2017-01-17 — Reel 038670/0474
  • Conveyance: ASSIGNMENT
  • Assignor: THOMSON LICENSING
  • Assignee: THOMSON LICENSING DTV
  • Correspondent: PERMANENT IP, 1 RUE J.P. TIMBAUD, VELIZY VILLACOUBLAY, 78140, FR
  • Context: Internal corporate reorganization, transferring intellectual property between related entities.
• 2018-08-01 (executed) / recorded 2018-08-10 — Reel 042457/0118
  • Conveyance: ASSIGNMENT
  • Assignor: THOMSON LICENSING DTV
  • Assignee: INTERDIGITAL MADISON PATENT HOLDINGS
  • Correspondent: FISH & RICHARDSON P.C. - MINNEAPOLIS, P.O. BOX 1187, MINNEAPOLIS, MN 55440-1187
  • Context: Acquisition of a patent portfolio by InterDigital from Thomson/Technicolor.

Timeline diagram

timeline
    title Ownership of US 9185268
    2007 : Inventors to Thomson Licensing
    2015 : Patent Issued
    2017 : Thomson Licensing to Thomson Licensing DTV
    2018 : Thomson Licensing DTV to InterDigital
    2025 : Litigation filed

NPE / troll-pattern signals

1. Shell-entity transfer — Present. The transfer to "INTERDIGITAL MADISON PATENT HOLDINGS" (Assignee in Reel 042457/0118, recorded 2018-08-10) is a strong indicator of a shell entity, given the "Patent Holdings" suffix and InterDigital's known business model.
2. Known asserter in the chain — Present. InterDigital Madison Patent Holdings is an entity associated with InterDigital, Inc., a company widely recognized as a patent licensing and assertion company. Unified Patents lists InterDigital as a high-frequency plaintiff. An IPR case IPR2026-00252 and a US district court case 2:25-cv-00895 are associated with this patent, with the petitioner/source being Unified Patents, which tracks NPE activity.
3. Repeat correspondent across the chain — Not Present. The correspondents for each assignment (BLAKELY, SOKOLOFF, TAYLOR & ZAFMAN LLP; PERMANENT IP; FISH & RICHARDSON P.C.) are distinct across this patent's assignment chain.
4. Cascading transfers — Unclear. There are two transfers within 19 months (2017-01-13 to 2018-08-01, Reels 038670/0474 and 042457/0118). While two transfers in under 24 months could be considered somewhat rapid, the nature of the first transfer appears to be an internal corporate reorganization within Thomson/Technicolor, followed by a sale to InterDigital. It doesn't exhibit the typical pattern of rapid, multiple transfers between shell LLCs by an NPE.
5. Pre-litigation transfer — Not Present. The assignment to InterDigital Madison Patent Holdings was executed on 2018-08-01 and recorded on 2018-08-10 (Reel 042457/0118). The earliest identified litigation (US case 2:25-cv-00895) was filed in 2025, significantly more than six months after this transfer.
6. Bankruptcy fire-sale — Not Present. While Thomson/Technicolor underwent restructuring, the sale of its patent licensing business to InterDigital was a strategic divestment, not a sale under Chapter 7 or 11 bankruptcy proceedings.
7. Privateering — Unclear. The patent originated from an operating company (Thomson/Technicolor) and was acquired by a known NPE (InterDigital). However, there is no explicit public evidence to suggest a specific privateering arrangement where Thomson/Technicolor retains an interest in InterDigital's assertions against particular competitors. It appears to be a straightforward sale of a patent portfolio.
8. Defensive aggregator (anti-NPE) — Not Present. The current assignee, InterDigital Madison Patent Holdings, is an asserting entity, not a defensive aggregator.

Verdict

NPE — high confidence
This verdict is based on two strong signals: the patent is currently held by InterDigital Madison Patent Holdings (Reel 042457/0118, recorded 2018-08-10), which is a known entity of InterDigital, Inc., a prominent patent licensing and assertion company. Furthermore, there is ongoing litigation involving this patent, including a district court case filed in 2025 and an IPR filed in 2026, as tracked by Unified Patents. This directly confirms the patent's use in assertion by a known NPE.

USPTO Assignment Center search page: https://assignmentcenter.uspto.gov/

US Patent 9185268, titled "Methods and systems for displays with chromatic correction with differing chromatic ranges," addresses the challenge of ensuring consistent color reproduction on displays with varying color gamuts. The patent's priority date is April 3, 2007, and its publication date is November 10, 2015. The invention focuses on workflows for color correction and mastering, specifically either generating metadata for color gamut mapping (CGM) to adapt content from a non-reference color gamut (CG2) master for reference color gamut (RCG) displays (Claims 1-5, 12-14, 20-24), or creating two distinct masters (one for CG2, and a derivative one for RCG via CGM) (Claims 6-11, 15-19, 25-30).

The following prior art references are identified as most relevant based on their publication/filing dates preceding the priority date of US9185268 (April 3, 2007) and their titles indicating pertinence to color management, gamut mapping, or handling extended color spaces.

Most Relevant Prior Art for US9185268:

1. US6947589B2

• Full Citation: US6947589B2, "Dynamic gamut mapping selection", Canon Kabushiki Kaisha (Assignee), Newman, Todd D. (Inventor).
• Publication/Filing Date: Filing Date: 2001-09-20; Publication Date: 2005-09-20.
• Brief Description: This patent describes a system and method for dynamically selecting a gamut mapping function for an image based on image quality parameters and local image characteristics. The goal is to process an image for display or printing such that colors that fall outside the target device's color gamut are appropriately mapped to enhance image quality.
• Potential Anticipation Analysis: This reference potentially anticipates the general concept of applying color gamut mapping to adapt content for a display. However, it does not explicitly teach the specific workflow of US9185268, which involves mastering content only for a non-reference type display (CG2) and then generating metadata for a subsequent color gamut mapping to transform this mastered content for display on reference type displays (RCG) (Claims 1, 12, 20). Nor does it explicitly describe creating a derivative master for RCG displays from a CG2 master (Claims 6, 15, 25). Its focus is on dynamic selection of CGM functions based on image characteristics.

2. WO2006050305A1

• Full Citation: WO2006050305A1, "Method and system for mastering and distributing enhanced color space content", Technicolor Inc (Assignee), Doser, Ingo Tobias; Mantiuk, Rafał Kazimierz; Seetzen, Helge K.; Whitehead, Lorne A. (Inventors).
• Publication/Filing Date: Filing Date: 2004-11-01; Publication Date: 2006-05-11.
• Brief Description: This patent describes a method and system for mastering and distributing content with an "enhanced color space". The method includes receiving content with an original color space, converting it to a master content in an enhanced color space, and generating metadata describing both the original and enhanced color spaces. This master content and metadata are then distributed.
• Potential Anticipation Analysis: This reference is highly relevant as it describes "mastering" content in an "enhanced color space" (analogous to US9185268's non-reference color gamut) and generating "metadata" describing color spaces for distribution. The concept of generating metadata for subsequent color space transformations directly relates to generating metadata for a color gamut mapping to transform mastered content for a reference type display. Thus, it potentially anticipates elements of claims 1, 12, and 20, particularly the aspect of "generating metadata for a color gamut mapping that color transforms the mastered color corrected picture content for display on reference type displays having a reference color gamut". However, the specific inventive steps of US9185268 concerning the direction of the mastering (CG2 first, then metadata for RCG) and the explicit "color correction" workflow for "predictable results" might still provide differentiation. It does not clearly anticipate the creation of two distinct masters as per claims 6, 15, and 25.

3. EP1578140A2

• Full Citation: EP1578140A2, "System and method for color management", Thomson Licensing S.A. (Assignee), Doser, Ingo Tobias; Boes, Stefan; Weick, Torsten; Stauder, Jurgen; Lee, Bongsun (Inventors).
• Publication/Filing Date: Filing Date: 2004-03-19; Publication Date: 2005-09-21.
• Brief Description: This patent discloses a method for color management in an image processing chain to display an image on a device with a native color gamut. It involves converting image colors from a source color gamut into a target color gamut using a color gamut mapping (CGM) algorithm, and evaluating an optimal CGM algorithm based on source image and target display characteristics.
• Potential Anticipation Analysis: This reference, co-invented by some of the inventors of US9185268, generally describes color management and color gamut mapping between source and target gamuts. It could potentially anticipate the broad concept of "performing color correction on source picture content, using a color gamut mapping" found in claims 1, 6, 12, 15, 20, 25. However, it does not explicitly detail the specific workflows of US9185268, such as mastering content primarily for a non-reference display and then generating metadata for a reference display, or creating a derivative RCG master.

4. US6282312B1

• Full Citation: US6282312B1, "System using one or more residual image(s) to represent an extended color gamut digital image", Eastman Kodak Company (Assignee), MacDonald, Lindsay W.; Braud, John W. (Inventors).
• Publication/Filing Date: Filing Date: 1998-09-28; Publication Date: 2001-08-28.
• Brief Description: This system represents a digital image with an extended color gamut by converting it into a base image within a standard color gamut and one or more residual images that capture the differences. The base and residual images are stored, allowing for reconstruction of the extended color gamut image for display on an extended color gamut device.
• Potential Anticipation Analysis: This patent is relevant for its approach to handling "extended color gamut" images and providing information (residual images) for their display on different gamut devices. This could potentially anticipate aspects related to handling different color gamuts and storing transformation-related data (like metadata) for different displays. However, it focuses on an encoding/storage and reconstruction method rather than the specific "color correction" and "mastering" workflow for predictable results across differing display types described in US9185268's claims.

5. US6754384B1

• Full Citation: US6754384B1, "Method for processing an extended color gamut digital image using an image information parameter", Eastman Kodak Company (Assignee), MacDonald, Lindsay W.; Braud, John W. (Inventors).
• Publication/Filing Date: Filing Date: 2000-08-30; Publication Date: 2004-06-22.
• Brief Description: This method involves receiving an extended color gamut digital image, obtaining an image information parameter for it, and then producing a standard color gamut digital image from the extended gamut image and the parameter. The resulting standard gamut image is suitable for display on a standard color gamut device.
• Potential Anticipation Analysis: This reference is highly relevant, as it describes a process that takes an "extended color gamut digital image" (analogous to content for a non-reference type display) and produces a "standard color gamut digital image" (analogous to content for a reference type display) using an "image information parameter" (analogous to metadata or a color gamut mapping). This directly parallels the concept in US9185268's claims 6, 15, and 25, which involve mastering for a non-reference type display and then using a color gamut mapping to provide mastered content for a reference type display, where the RCG master is a "derivative" of the CG2 master. It also touches upon elements of claims 1, 12, and 20 concerning the use of parameters/metadata for conversion. This patent offers strong potential anticipation for the core concepts of deriving standard gamut content from extended gamut content.

Under 35 U.S.C. § 103, a patent claim is obvious if the differences between the claimed invention and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art (PHOSITA). This analysis requires identifying a teaching, suggestion, or motivation in the prior art that would have led a PHOSITA to combine the references to arrive at the claimed invention, and a reasonable expectation of success.

The patent US9185268 addresses the problem of inconsistent color reproduction when content mastered for a reference color gamut (RCG) display is shown on a non-reference color gamut (CG2) display, and vice versa. The patent's background section explicitly describes the state of the art and its shortcomings, which serves as a crucial foundation for understanding the motivation for combining prior art elements.

Prior Art from US9185268's Description:

The patent itself highlights several aspects of the prior art:

• FIG. 1: Illustrates the significant variation in color gamuts among currently available displays.
• FIG. 2: Shows an example of color gamut mapping (CGM), a known technique for transforming colors between different gamuts.
• FIG. 3: Depicts a "hue change on a bluish white graduation due to color gamut restriction," demonstrating the visual artifacts (e.g., clipping, incorrect hue) that occur when colors exceed a display's gamut.
• FIG. 4: Describes a "workflow for color correction using a display having a reference color gamut" (workflow 400). The patent explicitly states that the "undesirable result of the color correction workflow 400... is that when color correcting on a display with a reference color display (RCG), the colors on a display with a second color gamut or color gamut 2 (CG 2 ) will be reproduced incorrectly." It further notes that "at least some of the colors on the RCG 2 display will be clipped and at least some with be displayed with the wrong hue."

This background clearly establishes that a PHOSITA would be aware of:

• The prevalence of displays with diverse color gamuts (RCG and CG2).
• The problems of color inaccuracy (clipping, hue shifts) when content is not matched to the target display's gamut, particularly when RCG-mastered content is viewed on CG2 displays.
• The existence and principles of color gamut mapping (CGM) for transforming colors between gamuts.

Obviousness Analysis of Claim 1:

Claim 1 describes a method for color correcting, comprising:

1. Performing color correction on source picture content, using at least one of a non-reference type display (CG2) and a reference type display (RCG).
2. Mastering the source picture content to provide mastered color corrected picture content for display on the non-reference type displays (CG2).
3. Generating metadata for a color gamut mapping that color transforms the mastered CG2 content for display on RCG displays.
4. The source picture content is mastered only for the non-reference type displays (CG2).

Combination of Prior Art References:
A combination of Prior Art Workflow 400 (FIG. 4 of US9185268), WO2006050305A1 (Technicolor Inc.), and US20090102968A1 (Ingo Tobias Doser) would render Claim 1 obvious.

Motivation for Combination:
A PHOSITA, starting from the Prior Art Workflow 400 (FIG. 4) and recognizing the explicitly stated problem that content color corrected for an RCG display leads to incorrect reproduction, including clipping and hue errors, on a CG2 display, would be highly motivated to improve the fidelity of color on the increasingly common CG2 displays.

WO2006050305A1 teaches methods and systems for "mastering and distributing enhanced color space content." A PHOSITA would readily consider the "non-reference type display having a non-reference color gamut" (CG2), especially if it's an "enhanced" (wider) gamut or simply a different target, as a prime candidate for such enhanced color space mastering. Therefore, the step of primarily mastering the content "for display on the non-reference type displays having a non-reference color gamut" directly addresses the known problems of RCG-centric mastering and aligns with the concept of mastering for diverse color spaces taught by WO2006050305A1.

Once the content is mastered for CG2, the PHOSITA would still need a solution for displaying this content correctly on existing RCG displays. US20090102968A1 teaches the generation and use of "Color Metadata for a Downlink Data Channel," demonstrating the known art of using metadata to convey color transformation information. It would be obvious to generate "metadata for a color gamut mapping that color transforms the mastered color corrected picture content for display on reference type displays having a reference color gamut." This metadata would direct a color gamut mapping (CGM, as generally understood from Prior Art FIG. 2) to adapt the CG2 master for RCG display. The limitation that the source picture content is "mastered only for the non-reference type displays" would be an obvious workflow optimization, where the primary artistic intent is captured for the target CG2, and RCG compatibility is achieved derivatively through metadata.

Obviousness Analysis of Claim 6:

Claim 6 describes a method for color correcting, comprising:

1. Performing color correction on source picture content, using at least one of a non-reference type display (CG2) and a reference type display (RCG).
2. Mastering the source picture content to provide mastered color corrected picture content for display on the non-reference type displays (CG2).
3. Mastering the source picture content to provide mastered color corrected picture content for display on the reference type displays (RCG), using a color gamut mapping applied to the mastered CG2 content.

Combination of Prior Art References:
A combination of Prior Art Workflow 400 (FIG. 4 of US9185268), WO2006050305A1 (Technicolor Inc.), and Prior Art Color Gamut Mapping (FIG. 2 of US9185268) would render Claim 6 obvious.

Motivation for Combination:
As with Claim 1, a PHOSITA, observing the problems with Prior Art Workflow 400 (FIG. 4) where content mastered for RCG displays appears incorrectly on CG2 displays (with clipping and hue errors as shown in Prior Art FIG. 3), would be motivated to improve the visual quality on CG2 displays.

WO2006050305A1 teaches mastering and distributing "enhanced color space content." This would motivate the PHOSITA to primarily master the source picture content "for display on the non-reference type displays having a non-reference color gamut" to preserve optimal color information for these displays, directly addressing the identified shortcomings of RCG-only mastering.

To ensure compatibility with RCG displays, the PHOSITA would then need to create an RCG-compatible version. Instead of relying on metadata at the consumer end (as in Claim 1), creating a separate, pre-processed RCG master is an obvious alternative, especially for distribution efficiency or simpler playback devices. Prior Art FIG. 2 clearly illustrates the concept of "color gamut mapping" (CGM) to transform content between different color gamuts. It would be obvious to a PHOSITA to apply this known "color gamut mapping" to the mastered CG2 content to derive a separate "mastered color corrected picture content for display on the reference type displays having a reference color gamut." This approach provides two distinct masters, with the RCG master being a derivative of the CG2 master through a standard CGM process, thereby accommodating both display types effectively. The patent itself notes this as a "real benefit", further underscoring the motivation for a PHOSITA to combine these known elements to achieve such a desirable outcome.