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JP-7855643-B2 - Projector light source dimming using future frame metadata

JP7855643B2JP 7855643 B2JP7855643 B2JP 7855643B2JP-7855643-B2

Inventors

  • リチャーズ，マーティン ジェイ．
  • リッペイ，バレット
  • ペルティエラ，ファン ピー．
  • ハイダロフ，ザッカンガー ヴィー．
  • デウォルド，デュアン スコット
  • ウェインライト，ネイサン ショーン
  • ヘニガン，ダレン
  • ジャクソン，ジョン デイビッド

Assignees

  • ドルビー ラボラトリーズ ライセンシング コーポレイション

Dates

Publication Date
20260508
Application Date
20240620
Priority Date
20180926

Claims (5)

  1. A light source configured to emit light according to content data including the volume of the soundtrack, An optical modulator configured to modulate the aforementioned light, A controller that performs global dimming by adjusting the brightness of the light source in accordance with the content data, the controller configured to reduce the perceived likelihood of visual artifacts caused by fluctuations in the brightness of dark areas in an image formed by the optical modulator during global dimming by adjusting the rate of change of the brightness of the light source based on the content data and performing global dimming of a lower intensity during periods when the volume of the soundtrack is higher, A projection display system equipped with [a specific feature].
  2. The projection display system according to claim 1, wherein the controller is configured to adjust the rate of change of the brightness of the light source based on the content data and metadata relating to future frames.
  3. The projection display system according to claim 1, wherein the light source includes a first light-emitting device configured to emit light of a first color, a second light-emitting device configured to emit light of a second color, and a third light-emitting device configured to emit light of a third color.
  4. The projection display system according to claim 3 , wherein the controller is configured to individually adjust the light levels of the first color light, the second color light, and the third color light.
  5. The projection display system according to claim 3 , wherein the controller is configured to adjust the light levels of the first color light, the second color light, and the third color light all at once.

Description

Cross-reference of related applications This application claims priority under U.S. Provisional Patent Application No. 62/882,894 filed on 5 August 2019 and U.S. Provisional Patent Application No. 62/737,015 filed on 26 September 2018, the entire text of these applications is incorporated herein by reference. This application, in a broad sense, relates to a projector display system. A projector display system typically includes a light source that projects an image onto a screen, modulated by some optical system inside or outside the projector. The projector includes a light source that may include one or more light-emitting elements such as a laser, xenon lamp, arc lamp, or light-emitting diode. Light from the light source may be guided along an optical path that may include one or more optical elements such as lenses, modulators, beam expanders, beam splitters, irises, and filters. The light emitted from a projector display system can be directed onto a two-dimensional screen, such as a movie screen. One or more modulators, which may be included in the projector display system, selectively direct the light to specific areas on the screen, thereby producing an image that may contain both relatively bright and relatively dark areas. The contrast ratio of a projector is one measure of the performance of a projector display system, defined as the ratio of its display's peak brightness level to its dark level. Since an infinite contrast ratio is technically impossible, it can be technically difficult for a projector to simultaneously display both very bright and absolutely black areas of an image. Projector or other display systems including or related to global dimming are described in the applicant's patents and patent applications, including the following: U.S. Patent Publication No. 2018/0217485, titled "Single and Multi-Modulator Projector Systems with Global Dimming"; U.S. Patent Publication No. 2018/0211440, titled "Surround Ambient Light Sensing, Processing, and Adjustment"; U.S. Patent Publication No. 2018/0164665, titled "Light Recycling for Projectors with High Dynamic Range"; U.S. Patent Publication No. 2018/0098, titled "Targeted Display Color Volume Specification via Color Remapping Information (CRI) Messaging" U.S. Patent Publication No. 046, entitled "Dynamic Power Management for an HDR Display," U.S. Patent Publication No. 2018/006863 U.S. Patent Publication No. 2018/0011365, entitled "High Dynamic Range Displays Using Filterless LCD(s) for Increasing Contrast and Resolution" U.S. Patent Publication No. 2, entitled "Methods and Systems for High Dynamic Range Image Projectors" U.S. Patent Publication No. 2017/0316758, titled "High Dynamic Range Display Using LED Backlighting, Stacked Optical Films, and LCD Drive Signals Based on a Low Resolution Light Field Simulation" (No. 018/0007327); U.S. Patent Publication No. 2017/0186380, titled "Power Management for Modulated Backlights"; U.S. Patent Publication No. 2016/0261832, titled "Single and Multi-Modulator Projector Systems with Global Dimming"; U.S. Patent Publication No. 2016/0139560, titled "Projector Display Systems Having Non-Mechanical Mirror Beam Steering" U.S. Patent Publication No. 2015/0365580, entitled "Global Display Management Based Light Modulation" U.S. Patent Publication No. 201, entitled "Enhanced Global Dimming for Projector Display Systems" U.S. Patent Publication No. 2014/0333660, titled "Mapping for Display Emulation Based on Image Characteristics" (No. 5/0124176) U.S. Patent Publication No. 2014/0168287, titled "Power Management for Modulated Backlights" (No. 2014/0168287) U.S. Patent Publication No. 2014/0085190, titled "Display, Imaging System and Controller for Eyewear Display Device" (No. 2014/0085190) U.S. Patent Publication No. 2013/0335682, titled "High Contrast Grayscale and Color Displays" (No. 2013/0335682) "High Dynamic Range Display Using LED Backlighting, Stacked Optical Films, and LCD Drive Signals Based on a Low Resolution Light Field Simulation" The full texts of the following documents are incorporated herein by reference: U.S. Patent Publication No. 2013/0120234, titled "Simulation"; U.S. Patent Publication No. 2012/0224121, titled "High Dynamic Range Displays Using Filterless LCD(s) for Increasing Contrast and Resolution"; U.S. Patent Publication No. 2011/0175949, titled "Power Management for Modulated Backlights"; and U.S. Patent Publication No. 2009/0322800, titled "Method and Apparatus in Various Embodiments for HDR Implementation in Display Devices". Various other and more detailed specific features of the above aspects are more fully disclosed in the following description with reference to the attached drawings. Graphs illustrating exemplary dimming techniques in various aspects of this disclosure are shown. This disclosure shows graphs illustrating exemplary relationships between projectors and rooms in various aspects. A graph illustrating another exemplary dimming technique in various aspects of t