Security visual intercom circuit

Abstract

The embodiment of the invention discloses a security visual intercom circuit, which is used for realizing the function of security visual intercom. The circuit comprises a connecting chip, a triode, a phase inverter, and a switch module, wherein the connecting chip is used for sending a video and audio command to the triode to control a level signal through an audio line, the triode is used for controlling the level signal according to the received video and audio command and sending the level signal to the phase inverter and the switch module, the phase inverter is used for controlling a first preset level signal through the secondary phase inverting to trigger a camera to capture a real-time image and feed the real-time image back to a display screen, and the switch module is used for communicating with an intercom function through an attraction switch if a second preset level signal is received. The circuit has the advantage that the connecting chip sends the level signal to the phase inverter to carry out the phase inverting processing and trigger the triode, and then the visual intercom function of the circuit is realized, so the production cost and investment cost are greatly reduced.

Description

technical field [0001] The invention relates to the field of household electronic security, in particular to a security video intercom circuit. Background technique [0002] With the continuous development of the economy, the living conditions of users have also been continuously improved. At present, users pay more attention to the reliability of residential security protection. Therefore, the application of security video intercom systems is becoming more and more extensive. [0003] Today's security video intercom systems usually realize the security visual function through the deformation of the single-chip microcomputer and the program. [0004] However, due to the complicated programming of such a security video intercom system, processing chips with high computing power are required for processing, resulting in high production costs. At the same time, due to a large number of calculations, it is easy to cause system paralysis. Contents of the invention [0005] The...

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Problems solved by technology

[0004] However, due to the complicated programming of such a security video intercom system, it needs to use a processing chip with high computing power for processing, resulting in high production costs. At the same time, due to a large number of calculations, it is easy to cause system paralysis

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