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Correction triggering method of micro-projection equipment and micro-projection equipment

A kind of equipment and technology of micro-projection, which is applied in the parts of color TV, using projection device image reproducer, electrical components, etc., can solve high-frequency noise, excessive sound of micro-projection equipment, and frequent triggering of auto-focus by micro-projection equipment or picture automatic correction and other issues, to achieve the effect of improving accuracy, ensuring normal use, and solving the problems of frequent triggering of auto focus or automatic picture correction

Active Publication Date: 2017-07-28
HISENSE BROADBAND MULTIMEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a micro-projection device calibration trigger method and micro-projection device to solve the high-frequency noise generated by abnormal operations such as excessive sound of the micro-projection device and user operations, which cause the micro-projection device to frequently trigger autofocus or screen Problems with AutoCorrect

Method used

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  • Correction triggering method of micro-projection equipment and micro-projection equipment
  • Correction triggering method of micro-projection equipment and micro-projection equipment
  • Correction triggering method of micro-projection equipment and micro-projection equipment

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Embodiment 1

[0032] The embodiment of the present application discloses a calibration triggering method and device for micro-projection equipment, see figure 2 , is a schematic flow chart of Embodiment 1 provided in this application.

[0033] In step S101, the acceleration data collected by the acceleration sensor is acquired.

[0034] An acceleration sensor or a digital acceleration sensor is installed in the micro-projection device. When the micro-projection device moves, the main chip obtains the acceleration data collected by the acceleration sensor. The acceleration data here refers to the original acceleration data collected by the acceleration sensor. When the micro-projection device is displaced, the acceleration sensor can sense the displacement of the micro-projection device and the direction in which the micro-projection device is displaced.

[0035] In step S102, the difference filtering is performed on the current acceleration data and the acceleration data collected last ti...

Embodiment 2

[0057] see Figure 4 , is a schematic flow chart of Embodiment 2 provided by the present application.

[0058] In step S201, the acceleration data collected by the acceleration sensor is acquired.

[0059] In step S202, the difference filtering is performed on the current acceleration data and the acceleration data collected last time to obtain first-level filtered data.

[0060] In step S203, data higher than a preset cut-off frequency in the primary filtering data is filtered out to obtain secondary filtering data.

[0061] In step S204, if the rate of change of the current secondary filtering data relative to the previous secondary filtering data exceeds a preset rate of change, an auto-focus or image auto-correction function is triggered.

[0062] After filtering out the data higher than the preset cut-off frequency in the filtered data, the secondary filtered data is obtained. As can be seen from the above-mentioned embodiment, it is determined whether the micro-projec...

Embodiment 3

[0073] see Image 6 , is a schematic flowchart of Embodiment 3 provided in the embodiment of this application.

[0074] In step S301, the acceleration data collected by the acceleration sensor is acquired.

[0075] In step S302, three differences between the acceleration data in the three axis directions acquired at the current moment and the acceleration data in the three axis directions corresponding to the previous moment are calculated.

[0076] In step S303, when at least one of the three differences is greater than the preset difference, the acceleration data in the three axis directions acquired at the current moment is deleted to obtain primary filtering data.

[0077] Calculate the three differences between the acceleration data in the three axis directions at the current moment and the acceleration data in the three axis directions corresponding to the previous moment. If any of the three differences is greater than the preset difference, it means The acceleration ...

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Abstract

The invention discloses a correction triggering method of micro-projection equipment and the micro-projection equipment. The method comprises the following steps: acquiring acceleration data acquired by an acceleration sensor; performing difference filtering on the current acceleration data and acceleration data acquired at the previous time, and obtaining primary filter data; filtering data higher than a preset cut-off frequency in the primary filter data, and obtaining secondary filter data; and if the difference between the current secondary filter data and the previous secondary filter data exceeds a preset threshold, or the change rate of the current secondary filter data relative to the previous secondary filter data exceeds a preset change rate, then triggering an auto focus or picture automatic correction function. The correction triggering method of the micro-projection equipment provided by the invention effectively prevents the false triggering of auto focus and picture automatic correction functions caused by abnormal operations, such as machine vibration and improper user operations and so on, and ensures the normal use of these functions.

Description

technical field [0001] The present application relates to the field of automatic focusing and automatic correction of micro-projection equipment, and in particular to a calibration triggering method of micro-projection equipment and the micro-projection equipment. Background technique [0002] The micro-projection device is a portable projection device, users can use the micro-projection device to watch videos, demonstrate PPT, etc. anytime, anywhere. Due to its portability, the micro-projection equipment is often used in different places, so its use position is often changed. When the use position is changed every time, the micro-projection device needs to refocus and correct the output picture. Therefore, in order to improve the micro-projection The projection effect of the equipment requires the introduction of auto-focus and automatic image correction functions in the micro-projection equipment. [0003] figure 1 It is a schematic structural diagram of a micro-projecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31
CPCH04N9/317H04N9/3179
Inventor 张丽萍王文明石新利
Owner HISENSE BROADBAND MULTIMEDIA TECH
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