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Audio and video monitoring device and system, and call method based on audio and video monitoring device

A monitoring device, audio and video technology, applied in the field of communication, can solve problems such as one-way calls, achieve the effect of two-way calls and avoid echo interference

Inactive Publication Date: 2016-01-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to provide an audio and video monitoring device, a system and a call method based on the audio and video monitoring device, so as to solve the problem that the existing calls based on the audio and video monitoring device can only be one-way calls

Method used

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  • Audio and video monitoring device and system, and call method based on audio and video monitoring device
  • Audio and video monitoring device and system, and call method based on audio and video monitoring device
  • Audio and video monitoring device and system, and call method based on audio and video monitoring device

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Embodiment 1

[0044] See figure 1 As shown, this figure shows the audio and video monitoring device provided by this embodiment, which includes: a signal receiving module, a sound playing module, a first sound collecting module, an echo processing module and a signal sending module; also includes a video monitoring module; In the call mode of the audio and video monitoring device:

[0045] The signal receiving module is used to receive the first voice signal sent by the monitoring background, and sends the first voice signal to the sound playing module and the echo processing module; the sound playing module can be various types of loudspeakers in this embodiment;

[0046] The sound playing module is used to play the first voice signal;

[0047] The first sound collection module is used to collect the second voice signal, and the second voice signal is sent to the echo processing module; because the first sound collection module is collecting the second voice signal, the sound playback mod...

Embodiment 2

[0064] In order to understand the present invention better, below with Figure 8 A specific audio and video monitoring device shown as an example is described, and it is in Figure 7 On the basis of the IDE audio and video monitoring device shown, the first sound acquisition module and the second sound acquisition module are specifically limited to use a directional microphone and an omnidirectional microphone respectively, and the sound playback module specifically uses a loudspeaker. A first A / D conversion module, a second A / D conversion module, a D / A conversion module, a noise suppression module, an automatic gain control module, an encoding module and a decoding module for performing related processing. Among them, for the spatial positional relationship between the directional microphone, the omnidirectional microphone and the camera of the audio and video surveillance device, please refer to Figure 9 Shown:

[0065] The directional microphone 2, the omnidirectional mi...

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PUM

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Abstract

The invention discloses an audio and video monitoring device and system, and a call method based on the audio and video monitoring device. The audio and video monitoring device comprises a signal receiving module, a sound play module, a first sound acquisition module, an echo processing module and a signal transmitting module; when a call is performed, the signal receiving module receives a first voice signal transmitted by a monitoring background; the sound play module plays the first voice signal out; the first sound acquisition module acquires a second voice signal and sends the second voice signal to the echo processing module; and the echo processing module takes the first voice signal as a reference signal, eliminates the first voice signal contained in the second voice signal, and then sends the processed second voice signal to the monitoring background through the signal transmitting module. When the call is performed, the audio and video monitoring device can eliminate the first voice signal acquired by the first sound acquisition module from the sound play module, so the second voice signal sent to the monitoring background does not contain a part of the first voice signal, and an echo interference is prevented.

Description

technical field [0001] The invention relates to the communication field, in particular to an audio and video monitoring device, a system and a call method based on the audio and video monitoring device. Background technique [0002] With the improvement of people's living standards and the popularization of the Internet, security protection has become more and more popular. Especially in recent years, the development of information technology and the improvement of people's working and living environment have promoted people's awareness of social life and family safety precautions to be unprecedentedly strengthened. Audio and video surveillance, relying on the technical seamless compatibility with IP network and the remote real-time video processing capability and other network applications, has rapidly become the fastest growing product in the market with an annual growth rate of 40%. Market demand is unlimited. In fact, commercial and home audio and video surveillance is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04M9/08
Inventor 范泛黎家力黄家典
Owner ZTE CORP
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