Luminosity response characteristics measuring instrument of notebook computer liquid crystal display screen

Abstract

The invention discloses a luminosity response characteristics measuring instrument of a notebook computer liquid crystal display screen, which is a special device for measuring luminosity transient response characteristics of the note book computer liquid crystal display screen. A notebook computer (1) comprises an image measuring module and a data calculating module; the image measuring module in the notebook computer (1) transmits image data to a liquid crystal display screen and transmits a measurement command to a USB (universal serial bus) module (5) through a USB interface, a programmable photoelectric amplifier module (2) acquires a luminosity signal of the notebook computer liquid crystal display screen and converts the luminosity signal into a voltage signal, an A / D (analog / digital) conversion module (3) converts and simulates the voltage into a digital voltage signal, an FPGA (field programmable gate array) module (4) acquires and caches the digital voltage signal, controls the correction of scale span of the controllable programmable photoelectric amplifier module (2) and triggers the timing conversion of the A / D conversion module (3), the USB module (5) transmits the digital voltage signal to the notebook computer (1) through the USB interface, and the data calculation module in the notebook computer calculates liquid crystal response rising / descending time and blur edge rising / descending time.

Description

technical field [0001] The invention relates to a measuring instrument for measuring the luminance response characteristic of a liquid crystal display screen of a notebook computer, which belongs to the technical field of display testing. Background technique [0002] One of the methods for evaluating motion artifacts in an LCD monitor is to measure the luminance response characteristic. Since the LCD screen of a notebook computer is not equipped with a digital video interface (DVI) or a video graphics array interface (VGA), the test pattern required to measure its brightness response characteristics can only be generated by the application software of the notebook computer, and cannot receive external video signals to generate The test pattern signal provided by the device. [0003] The data acquisition for measuring the luminance response characteristics of the display screen should be controlled by the synchronous trigger signal provided by the video signal generator, ot...

AI Technical Summary

Problems solved by technology

Since the LCD screen of a notebook computer is not equipped with a digital video interface (DVI) or a video graphics array interface (VGA), the test pattern required to measure its brightness response characteristics can only be generated by the application software of the notebook computer, and cannot receive external video signals to generate The test pattern signal provided by the

[0003] The data acquisition for measuring the luminance response characteristics of the display screen should be controlled by the synchronous trigger signal provided by the video signal generator, otherwise the measurement method of multiple average acquisition data cannot be realized to eliminate the noise signal

The test pattern generated by the application software of the notebook computer cannot provide a synchronous trigger signal to control the data acquisition of the brightness response characteristics, so the measurement method of multiple average acquisition data cannot be used

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