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LCOS color time sequence LED lamp projection display control system and method

An LED lamp and projection display technology, applied in the field of LED projection, can solve the problems of poor display effect and insufficient brightness of color sequential LED projection display, and achieve the effects of low cost, improved lighting efficiency, and increased control signals

Pending Publication Date: 2021-06-25
CHENGDU JIUTIAN HUAXIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a LCOS color sequential LED lamp projection display control method, which solves the problem of poor display effect caused by insufficient display brightness of color sequential LED projection in the prior art

Method used

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  • LCOS color time sequence LED lamp projection display control system and method
  • LCOS color time sequence LED lamp projection display control system and method
  • LCOS color time sequence LED lamp projection display control system and method

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Embodiment 1

[0031] Such as figure 1 As shown in the LCOS color sequential LED lamp projection display control system, when the video signal is input, the R / G / B data signal is first split by the video signal processing module, and split into three subfields of R / G / B signal, and then split the R / G / B three sub-field signals to obtain six odd-even field RRGGBB, temporarily store the R / G / B six sub-field signals and then perform R / G / B data signal frequency multiplication processing , the R / G / B data signal is processed by the LED drive circuit module and the RGB data output module after frequency multiplication processing, and then projected and displayed.

[0032] The LED drive principle part includes the pulse width modulation function. The LED drive uses a constant current circuit. The current in the hardware circuit is set to the maximum drive current, and the current pulse width modulation function is added. The pulse width mainly adjusts the duty cycle of the LED, and then controls the LED...

Embodiment 2

[0036] RGB data output module, the present invention mainly optimizes the timing of lighting, focusing on increasing the lighting time of the other two lights through a special color ratio within the effective data time period. In the prior art, RGB lights are controlled to be turned on sequentially, and only one color of lights can be turned on within a certain effective data time period, and the lights of the other two colors are turned off. This invention adds that when the RGB is equally divided, the other two lights are also on at the same time, and other colors are matched. In this way, the overall brightness is increased by at least 3 times. For example, within a lighting cycle range, other colors of light are inserted at the same time, so that the lighting time of each light increases. As long as the three lights are on at the same time within the effective data time, the current of each light increases, then Indicates that the brightness of each light has increased. ...

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Abstract

The invention discloses an LCOS color time sequence LED lamp projection display control system and method, and relates to the technical field of LED projection. The system comprises a video signal input processing module, an LED drive circuit module and an RGB data output module, the video signal input processing module carries out splitting processing on R / G / B data signals, and carries out temporary storage and frequency doubling processing on the split R / G / B data signals; and the R / G / B data signal is subjected to frequency multiplication processing, then is processed by the LED driving circuit module and the RGB data output module and then is subjected to projection display, the lighting time sequence is optimized, and the lighting time of the other two lamps is increased through special color matching in an effective data time period, that is, the total brightness of LED color time sequence projection is the total brightness of three LED lamps. The problems that in the prior art, color time sequence LED projection is insufficient in display brightness and poor in display effect are solved.

Description

technical field [0001] The invention relates to the technical field of LED projection, in particular to an LCOS color sequential LED lamp projection display control system and method. Background technique [0002] The existing LCOS color timing control principle is: because the LCOS adopts the color timing control chip without a color filter (ColorFilter), it must generate RGB three primary colors through the LED lamp, and then convert the RGB image information in each field image data It is separated separately and divided into 3 sub-fields in each field time period, and the RGB image data are written into the display screen respectively. After the line scanning time of each sub-field is over and the liquid crystal response is completed, the RGB three-color light sources are respectively lit in turn. Therefore, three images of RGB are displayed sequentially within one field period, and colors are synthesized using the characteristics of the human eye. [0003] In the prior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31G09G3/00G09G3/34
CPCG09G3/001G09G3/3413H04N9/3111H04N9/3155
Inventor 张锦
Owner CHENGDU JIUTIAN HUAXIN TECH CO LTD