公开(公告)号：EP4352952A1

公开(公告)日：2024-04-17

申请号：EP22740618.8

申请日：2022-06-03

Applicant: Snap Inc.

Inventor： DEWALL, Jeffrey Michael ,  KANE, Alexander ,  SCHNITZER, Dominik ,  VIGNAU, Mathieu Emmanuel

IPC: H04N9/31 ,  G02B27/01

CPC classification number: H04N9/3182 ,  H04N9/3194 ,  H04N9/3123 ,  H04N9/3155 ,  H04N9/3111 ,  G02B27/0172 ,  G02B2027/017820130101 ,  G02B2027/011820130101 ,  G02B2027/011220130101

公开(公告)号：EP1672933A1

公开(公告)日：2006-06-21

申请号：EP05077370.4

申请日：2005-10-13

Applicant: Barco, naamloze vennootschap.

Inventor： Colpaert, Chris ,  Gerets, Peter

IPC: H04N9/31

CPC classification number: G02B26/008 ,  G03B21/14 ,  G03B21/2026 ,  G03B21/2053 ,  G03B27/547 ,  G03B33/08 ,  H04N9/3114 ,  H04N9/312 ,  H04N9/3123

Abstract: Method for controlling a lighting device that consists of at least a lighting source (3), a colour sequential device (5) and a single light valve (6) consisting of an array of light processing elements that are controlled by bits, the method comprising the steps of emitting a light beam (11) with said light source (3), filtering said light beam (11) by said colour sequential device (5) to achieve a coloured light beam (12) and processing said coloured light beam (12) with a bit depth of less than 16.

Abstract translation: 一种照明装置的控制方法，所述照明装置至少由光源（3），颜色顺序装置（5）和由由位控制的光处理元件阵列组成的单个光阀（6）组成，所述方法包括： 用所述光源（3）发射光束（11）的步骤，通过所述彩色顺序装置（5）对所述光束（11）进行滤光以实现彩色光束（12）并处理所述彩色光束（12） ），位深度小于16。

公开(公告)号：EP1672932A1

公开(公告)日：2006-06-21

申请号：EP05077279.7

申请日：2005-10-07

Applicant: Barco, naamloze vennootschap.

Inventor： Gerets, Peter

IPC: H04N9/31 ,  H01J61/00 ,  G03B21/20

CPC classification number: G02B26/008 ,  G03B21/14 ,  G03B21/2026 ,  G03B21/2053 ,  G03B27/547 ,  G03B33/08 ,  H04N9/3114 ,  H04N9/312 ,  H04N9/3123

Abstract: Improved single light valve projection device characterised in that it comprises a metal halide lamp (2), which driven by alternating current (AC); a relay-optic (8), consisting of an optical assembly; a single light valve element (10); a rotating colour wheel (11) which is positioned in between said metal halide lamp (2) and the relay-optic (8) and which colour wheel (11) contains at least two different colour filters; and in that the projection device (1) comprises means (12) for synchronising the rotational speed of said colour wheel (11), with the frequency of the alternating drive current of said metal halide lamp (2) and with the sequence of generating the single colour components by the light valve element (10).

Abstract translation: 改进的单光阀投影装置，其特征在于包括由交流（AC）驱动的金属卤化物灯（2）; 由光学组件组成的中继光学器件（8）; 单个光阀元件（10）; 位于所述金属卤化物灯（2）和中继光学元件（8）之间的旋转色轮（11），并且所述色轮（11）包含至少两个不同的滤色器; 并且投影装置（1）包括用于使所述色轮（11）的旋转速度与所述金属卤化物灯（2）的交变驱动电流的频率同步的装置（12），并且产生 单色元件由光阀元件（10）组成。

公开(公告)号：EP1546794A2

公开(公告)日：2005-06-29

申请号：EP03785185.4

申请日：2003-08-11

Applicant: Thomson Licensing S.A.

Inventor： WILLIS, Donald, Henry

IPC: G02F1/03 ,  G02F1/07

CPC classification number: G09G3/346 ,  G09G3/2018 ,  G09G2310/0235 ,  G09G2320/0242 ,  H04N9/3123

Abstract: A display system (10) comprises a digital micromirror device (DMD) (24) controlled by a driver circuit (30) responsive to sequences of pulse width segments formed by a processor (31). The processor (31) increases the pixel brightness by actuating selected pulses such that within a first range of brightness levels between first and second pixel brightness boundaries, a first large-duration pulse becomes actuated to reach the second pixel brightness boundary, and within a second range of pixel brightness levels between second and third pixel brightness boundaries, the first large duration pulse element remains actuated. Upon reaching the third pixel brightness boundary, a second large duration pulse element now becomes actuated with the first large duration pulse element remaining actuated. Forming the pulse width segments in this manner serves to reduce motion contouring.

公开(公告)号：EP1317142A3

公开(公告)日：2003-07-30

申请号：EP02079451.7

申请日：2002-10-25

Applicant: EASTMAN KODAK COMPANY

Inventor： Kowarz, Marek W. c/o Eastman Kodak Company ,  Brazas, Jr., John Charles Eastman Kodak Company

IPC: H04N5/74

CPC classification number: H04N9/3123 ,  H04N9/3105 ,  H04N9/3188

Abstract: An image-forming system with enhanced gray levels, including: a primary beam of light having a primary intensity value; a secondary beam of light having a secondary intensity value significantly less than the primary intensity value; a first modulator array of discrete devices receiving the primary beam of light and producing an output with coarse gray levels; a second modulator array of discrete devices receiving the secondary beam of light and producing an output with fine gray levels; a controller for synchronously controlling the first and the second modulator array; and optics that combine the output with fine gray levels and the output with coarse gray levels to form an image with the enhanced gray levels.

Abstract translation: 具有增强的灰度级的图像形成系统，包括：具有主强度值的主光束; 具有明显小于初级强度值的二次强度值的次级光束; 接收主光束并产生具有粗灰度级的输出的分立器件的第一调制器阵列; 接收次级光束并产生具有精细灰度级的输出的分立器件的第二调制器阵列; 控制器，用于同步地控制第一和第二调制器阵列; 以及将输出与精细灰度级结合的输出和具有粗灰度级的输出以形成具有增强的灰度级的图像的光学器件。

公开(公告)号：EP3226556A1

公开(公告)日：2017-10-04

申请号：EP17161796.2

申请日：2017-03-20

Applicant: Christie Digital Systems USA, Inc.

Inventor： NICHOLSON, Stuart James Myron

IPC: H04N9/31

CPC classification number: H04N9/3185 ,  H04N9/3123 ,  H04N9/3147

Abstract: Techniques for reducing blend artifacts in a multiple digital projector system are provided, including a first and second projector, having respective projection fields which overlap in a blend zone and one or more control devices configured to: for a given pixel of a common image frame projected by both the first projector and the second projector in the blend zone, the given pixel of the common image frame comprising a plurality of bitplanes arranged in a sequence, control the first projector to project a first portion of the plurality of bitplanes according to the sequence; and control the second projector to project a second portion of the plurality of bitplanes according to the sequence, the second portion complementary to the first portion, such that in the common image frame only one of the first projector and the second projector projects any given bitplane of the plurality of bitplanes.

Abstract translation: 提供了用于减少多数字投影仪系统中的混合伪像的技术，其包括第一投影仪和第二投影仪，其具有在混合区域中重叠的相应投影场以及一个或多个控制设备，该一个或多个控制设备被配置为：对于投影的公共图像帧的给定像素 通过混合区域中的第一投影仪和第二投影仪这两者，公共图像帧的给定像素包括以序列布置的多个位平面，控制第一投影仪根据序列投影多个位平面的第一部分 ; 并且控制所述第二投影仪根据所述序列投影所述多个位平面的第二部分，所述第二部分与所述第一部分互补，使得在所述公共图像帧中，所述第一投影仪和所述第二投影仪中仅有一个投影任何给定的位平面 在多个位平面中。

公开(公告)号：EP2116047B1

公开(公告)日：2011-05-25

申请号：EP07733930.7

申请日：2007-03-06

Applicant: Thomson Licensing

Inventor： TCHOUKALEYSKY, Emil

IPC: H04N5/913

CPC classification number: H04N5/913 ,  H04N9/3123 ,  H04N9/3179 ,  H04N9/3197 ,  H04N21/41415 ,  H04N21/4223 ,  H04N21/4402 ,  H04N2005/91392

Abstract: A method and apparatus for projecting digital video content and for discouraging recording of the projected video content using a video camera or other sampling recording device are described, including accepting a frame of digital video content, time-shifting a bit-plane of the frame of the digital video content at a phase difference, projecting the time-shifted frame, repeating the accepting, time-shifting and projecting acts for a number of frames, adjusting the phase difference and repeating all of the above acts. Also described are a method and apparatus for generating an indication of a mid-scale level bit-plane of a frame of digital video content, including accepting a frame of digital video content, accepting a selection of mid-scale level bit-plane of the frame and generating an indication of the selection of the mid-scale level bit-plane of the frame. Time-shifting bit-planes of a frame generates in the recorded video a flicker.

公开(公告)号：EP1590785A1

公开(公告)日：2005-11-02

申请号：EP03815638.6

申请日：2003-07-07

Applicant: Thomson Licensing

Inventor： WILLIS, Donald, Henry

IPC: G09G3/22 ,  G09G3/34 ,  G09G3/36 ,  G09G5/02

CPC classification number: G09G3/346 ,  G09G3/2022 ,  G09G3/2029 ,  G09G2310/0235 ,  G09G2320/0261 ,  G09G2320/0266 ,  H04N9/3114 ,  H04N9/3123

Abstract: A field sequential pulse width modulated display system (10) comprises a digital micromirror device (DMD) (24) having a plurality of micromirrors that each selectively pivot to reflect light onto a screen (28) to illuminate a corresponding pixel. A driver circuit (30) controls the DMD (24) responsive to sequences of pulse width segments formed by a processor (31). The processor (31) actuates at least one pulse in a first pulse width segment for a given color to increase pixel brightness with a range lying between first and second pixel brightness values. To further increase pixel brightness, the processor actuates at least one pulse within additional pulse width segments associated with the same given color to increase pixel brightness above the second brightness boundary. The pulses within the additional segments are actuated unequally so that the additional pulse width segments closest in time to the first segment (i.e., the segment first in brightness) have a greater total duration of actuated pulses for a given pixel brightness compared to the additional pulse width segments farther in time from the first segment. Actuating the pulses in this manner serves to: (a) limit the time dispersal of darker objects within a picture, (b) minimize the light redistribution between time segments for incremental brightness changes, and (c) taper up and down light intensity for the sequence of pulse width segments for a given picture, all to minimize motion artifacts.

公开(公告)号：EP1568217A1

公开(公告)日：2005-08-31

申请号：EP03812757.7

申请日：2003-07-07

Applicant: Thomson Licensing S.A.

Inventor： WILLIS, Donald, Henry

IPC: H04N5/74 ,  H04N9/12

CPC classification number: H04N9/3114 ,  G02B26/008 ,  G02B26/0833 ,  G09G3/2022 ,  G09G3/2025 ,  G09G3/2077 ,  G09G3/34 ,  G09G3/346 ,  G09G2310/0235 ,  G09G2320/0261 ,  G09G2320/0266 ,  H04N9/3123 ,  H04N2005/7466

Abstract: A field sequential pulse width modulated display system (10) comprises a digital micromirror device (DMD) (24) having a plurality of micromirrors that each selectively pivot to reflect light onto a screen (28) to illuminate a corresponding pixel. A driver circuit (30) controls the DMD (24) responsive to sequences of pulse width segments formed by a processor (31). The processor (31) alters the actuation state of at least one pulse in a first pulse width segment for a given color to alter the pixel brightness with a range lying between first and second pixel brightness boundaries. Further, the processor alters the actuation state of at least one pulse within at least one additional pulse width segment to alter the pixel brightness above the second brightness boundary to make nearly equal the total width of pulses becoming actuated within a segment to the total pulse width becoming de-actuated within the same segment to achieve an incremental change in brightness. Equalizing the weight of the total duration of actuated pulses to non-actuated pulses on a segment by segment basis serves to reduce motion artifacts attributable to light redistribution effects on intensity gradients.

公开(公告)号：EP1176578A2

公开(公告)日：2002-01-30

申请号：EP01118154.2

申请日：2001-07-26

Applicant: SONY CORPORATION

Inventor： Matsui, Takeshi ,  Nishi, Tomohiro

IPC: G09G3/20

CPC classification number: H04N9/69 ,  G09G3/2022 ,  G09G3/2025 ,  G09G3/2033 ,  G09G3/2081 ,  G09G3/28 ,  G09G3/34 ,  G09G3/3406 ,  G09G2320/0266 ,  G09G2320/0276 ,  G09G2320/0633 ,  G09G2320/064 ,  H04N5/7408 ,  H04N5/7416 ,  H04N9/31 ,  H04N9/3123

Abstract: The invention provides a display control apparatus and a display control method wherein, where digital gradation display is performed, occurrences of a moving picture pseudo contour can be reduced simply. A signal production circuit produces a signal for driving a display section so that light of divisional light amounts obtained by dividing light amounts corresponding to bits which compose digital values which are pixel values may be emitted in a such manner as to be distributed within a time corresponding to one screen. In this instance, where both of a first light amount corresponding to a predetermined bit and a second light amount corresponding to a bit in a lower order by one bit to the bit are divided, the first and second light amounts are divided so that the division number of the first light amount may be smaller than twice the division number of the second light amount.

Abstract translation: 本发明提供一种显示控制装置和显示控制方法，其中，在执行数字灰度显示的情况下，可以简单地减少运动图像伪轮廓的出现。 信号产生电路产生用于驱动显示部分的信号，使得通过对与组成作为像素值的数字值相对应的位的光分量获得的分光量的光可以以相应的时间分布的方式发射 到一个屏幕。 在这种情况下，对应于预定位的第一光量和对应于位的低位1位的第二光量被分割，第一和第二光量被分割，使得除法 第一光量的数量可以小于第二光量的分割数的两倍。