A digital cinema projection method and system
A digital film and film technology, applied in the direction of electrical components, color TV, color TV parts, etc., can solve the problems of limiting the quality of digital film projection, wasting energy consumption, disadvantages, etc., to improve the dynamic range, save energy consumption, The effect of improving quality
Active Publication Date: 2022-03-01
CHINA FILM EQUIP +1
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Problems solved by technology
It can be seen that in existing digital cinema projectors, no matter whether the laser light source adopts one laser or multiple lasers, the driving current output from the laser driver to the laser is fixed, which leads to whether the scene of the image is bright or dark, and the lasers are all in a fixed mode. The output power outputs each frame image of the film to be projected
In this way, on the one hand, the digital cinema projector wastes energy consumption; Contrast, which limits the improvement of digital cinema projection quality
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[0031] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0032] Such as figure 1 As shown, one embodiment of the present invention provides a digital movie projection method, including:
[0033] Obtaining the brightness parameters of each frame image in the image data of the film to be projected in the digital film distribution master;
[0034] Generate control information according to brightness parameters;
[0035] Outputting the driving current to the laser light source according to the control information, so that the output power of each frame image emitted by the laser l...
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The invention discloses a digital movie projection method and system. A specific implementation of the method includes: obtaining the brightness parameters of each frame image in the image data of the film to be projected in the digital cinema distribution master; generating control information according to the brightness parameters; outputting a driving current to the laser light source according to the control information, so that the laser The output power of the light source for each frame of image and / or the output power of each area in each frame of image corresponds to the brightness parameter of each frame of image. This embodiment can save the energy consumption of digital movie projection, improve the dynamic range of the image formed by projection, and improve the image contrast.
Description
technical field [0001] The invention relates to the technical field of movie projection. More specifically, it relates to a digital movie projection method and system. Background technique [0002] At present, a digital cinema projection system includes a playback server, a digital cinema projector, and audio equipment, among which, a digital cinema projector includes a laser driver, a laser light source, and a projection optical engine, etc., and the projection optical engine includes a digital micromirror device DMD, etc., and the laser light source includes a A laser or a plurality of lasers, correspondingly, the projection optical engine includes a whole digital micromirror array or multiple digital micromirror array areas. Using multiple lasers corresponding to multiple digital micromirror array areas is convenient for realizing partition control of the brightness of the projected image. At this time, each laser projects an image area through the corresponding digital ...
Claims
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IPC IPC(8): H04N9/31H04N21/233H04N21/8543H04N21/43H04N21/41
CPCH04N9/3161H04N9/3179H04N21/233H04N21/8543H04N21/4307H04N21/4122
Inventor 林民杰林晓飞郭克威何玮崔晓宇
Owner CHINA FILM EQUIP