Method for adjusting contrast of projector in real time and projector

A real-time adjustment and projector technology, applied in the field of projectors, can solve problems such as affecting lamp life

CN104111579AInactive Publication Date: 2014-10-22SHENZHEN ACTO NEW MEDIA TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-10-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for adjusting the contrast of a projector in real time and a projector. The method comprises the following steps: the current brightness of ambient light is detected by an ambient light brightness detector; the current brightness of ambient light is multiplied by a reference contrast to obtain the brightness required by a projector; driving signals of different waveforms stored in a lamp lighter are called to control light emission of a light source of the projector; the brightness of a picture projected by the projector is detected by a projector brightness detector in real time until the detected brightness reaches the brightness required by the projector; and adjustment is completed, and the driving signal of the currently-selected waveform is used as a driving signal of adjustment completion so as to stop calling of the driving signals. The invention further relates to a projector. The brightness of ambient light and the brightness of the picture projected by the projector are acquired at the same time for real-time contrast adjustment, a good display effect can be achieved, and the human eyes can feel more comfortable. No negative impact is caused to the service life of the light source of the projector when the brightness is increased.
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Description

technical field

[0001] The invention relates to a projector, in particular to a method for adjusting the contrast of the projector in real time, and also to a projector. Background technique

[0002] In the case of a sudden change in the brightness of the ambient light, if the brightness of the projector is not adjusted accordingly, the display effect will deteriorate. The traditional technology for real-time adjustment of the brightness of the projector uses the method of adjusting the power of the bulb, but this will greatly affect the life of the bulb. Contents of the invention

[0003] Based on this, it is necessary to provide a method for adjusting the contrast of a projector in real time that reduces the impact on the lamp life.

[0004] A method for adjusting the contrast ratio of a projector in real time, comprising the following steps: detecting the brightness of the current ambient light through an ambient light brightness detector; multiplying the brightness of...

Examples

Embodiment Construction

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings.

[0021] In order to ensure the display effect of the projector when the ambient light changes, we hope that the method of real-time adjustment of the contrast of the projector can basically maintain the contrast with ambient light through brightness adjustment in the case of ambient light changes. figure 1 It is a flowchart of a method for adjusting the contrast of a projector in real time in an embodiment, including the following steps:

[0022] S110. Detect the brightness of the current ambient light by using the ambient light brightness detector.

[0023] The ambient light brightness detector set by the projector detects the brightness outside the projector and digitizes it. The ambient light brightness detector can be embedded in the surface of the projector housing. We hope that the ambient light d...