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Row synchronization signal generation method, projection assembly, projector and storage medium

A frame synchronization signal and line synchronization technology, which is applied to the components of color TVs, image reproducers of projection devices, electrical components, etc. The effect of the line sync signal

Active Publication Date: 2019-04-09
GOERTEK OPTICAL TECH CO LTD
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  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for generating a line synchronous signal, a laser projection component, a laser projector, and a computer-readable storage medium, which effectively solves the problem of the received sinusoidal signal due to changes in frequency or amplitude. Problems with Synchronous Signals Affecting

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  • Row synchronization signal generation method, projection assembly, projector and storage medium
  • Row synchronization signal generation method, projection assembly, projector and storage medium
  • Row synchronization signal generation method, projection assembly, projector and storage medium

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Embodiment Construction

[0043] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] The invention provides a method for generating a line synchronous signal, which uses the sinusoidal signal output and fed back by the MEMS micro-electromechanical system as a line synchronous signal in the horizontal direction for controlling laser lighting after filtering, amplifying, and analog-to-digital conversion, thus avoiding the need for driving circuits The phase shift effect caused by the resonant state of MEMS effectively solves the problem that the received sinusoidal signal affects the generation of horizontal synchronization signals due to frequency changes or amplitude changes, so that real-time, accurate and stable horizontal synchronization signals can be obtained, thereby It ensures that each projection module can work normally and synchronously.

[0045] Such as figure 1 as shown, figure 1 ...

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Abstract

The invention discloses a row synchronization signal generation method, which comprises the following steps of: filtering and amplifying a received sinusoidal signal, and converting the sinusoidal signal into a first pulse signal; generating a second pulse signal according to the high-level pulse width and the pulse center point of the first pulse signal; performing delay processing on the secondpulse signal for a preset time to enable the rising edge of the second pulse signal to correspond to the peak value of the sine signal; and obtaining a period of a line lighting pixel, and generatinga line synchronization signal according to the rising edge of the second pulse signal after the delay processing and the period of the line lighting pixel. The invention further discloses a laser projection assembly, a laser projector and a computer readable storage medium. According to the method and the device, the problem that the generated line synchronization signal is influenced by frequencychange or amplitude change of the received sine signal is effectively solved.

Description

technical field [0001] The invention relates to the field of data signal communication, in particular to a method for generating a line synchronization signal, a laser projection component, a laser projector and a computer-readable storage medium. Background technique [0002] With the development of projection technology, laser beam scanning projector (LBS) has become more and more popular due to its simple structure, small size, small optical path loss, low power consumption, wide color range, high contrast, high resolution, and no need for focusing. Favored by the market. [0003] In the existing laser projection technology, it is necessary to project the three-primary-color laser beams onto the light curtain for imaging through a micro-electromechanical system (MEMS) mirror, in which the sinusoidal signal obtained after driving the mirror with a horizontal drive signal is used as the laser beam Generally speaking, because the horizontal synchronization signal of the las...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31
CPCH04N9/3141H04N9/3155H04N9/3161
Inventor 高文刚
Owner GOERTEK OPTICAL TECH CO LTD