LONG-RANGE VGA IMAGE TRANSMISSION SYSTEM PROVIDING AUTOMATIC IMAGE ADJUSTMENT

摘要

A long-range VGA image transmission system includes an image output source for providing a first image signal; a test circuit for providing a test signal; an image encoding and transmitting circuit for encoding the first image signal and test signal to generate a transmission signal; an image decoding and receiving circuit for receiving and decoding the transmission signal to generate a second image signal and the test signal; an image detection and comparison circuit for receiving, detecting and comparing the second image signal with the test signal to generate an adjustment signal; an image-enhancement compensation circuit for receiving the adjustment signal to automatically adjust the second image signal and generate a third image signal; and an image display device for receiving the second image signal and then receiving the third image signal after the image adjustment. Therefore, manpower cost and possible failure of image adjustment with naked eye is eliminated.

主权项

1. A long-range VGA image transmission system providing automatic image adjustment, comprising:
an image output source for providing a first image signal; a test circuit for providing a test signal; an image encoding and transmitting circuit being electrically connected to the image output source and the test circuit for receiving the first image signal and the test signal to generate a transmission signal through encoding; an image decoding and receiving circuit being electrically connected to the image encoding and transmitting circuit for receiving and decoding the transmission signal to generate a second image signal and the test signal; an image-enhancement compensation circuit being electrically connected to the image decoding and receiving circuit for receiving and transmitting the second image signal and the test signal; an image detection and comparison circuit being electrically connected to the image-enhancement compensation circuit for receiving the second image signal and the test signal, and detecting and comparing the second image signal with the test signal to generate an adjustment signal; and an image display device being electrically connected to the image-enhancement compensation circuit for receiving the second image signal; wherein the image-enhancement compensation circuit receives the adjustment signal and then automatically adjusts the second image signal to generate a third image signal; and the image display device starts receiving the third image signal after the adjustment made by the image detection and comparison circuit, and displays an image based on the third image signal.