CN101895714A - Wireless videophone talkback system - Google Patents

Abstract

The invention discloses a wireless videophone talkback system, which comprises a talkback indoor extension and a cordless telephone client. The talkback indoor extension comprises a control circuit assembly, a singlechip control unit and a cordless telephone server, wherein the control circuit assembly is connected with a talkback system service wire, and comprises an audio power amplifier module, a voltage-stabilizing circuit module, a key module, an image display module, a deployment/disarming module and an audio/video switching module; the singlechip control unit is communicated with the control circuit assembly and the cordless telephone server; and the interior of the cordless telephone server is connected with the control circuit assembly and the singlechip control unit, and the exterior of the cordless telephone server is connected with a service telephone wire and is wirelessly connected with the cordless telephone client simultaneously. A talkback visual system and DECT technology are combined, and the DECT is used as a household cordless telephone system to provide technical support for realizing audio/video wireless communication through excellent data transmission and processing capacity thereof.

Description

A kind of wireless videophone intercom system

Technical field

The present invention relates to a kind of building visual intercom system, especially the wireless videophone intercom system that combines with a kind of intercommunication indoor unit and color screen cordless telephone is relevant.

Background technology

Existing building conversational system, as visitor during by doorway main frame calling talkback indoor unit, resident family by indoor intercommunication extension set with functions such as the visitor can realize conversing, unblank.

But there is following drawback in it:

1) existing building conversational system adopts wire laying mode to constitute by doorway main frame and intercommunication indoor unit, so need shift to an earlier date pre-buried wiring, and doorway main frame and intercommunication indoor unit must be fixed on assigned address, give construction, use and keep in repair to put to no little inconvenience;

2) Zhuan Yong intercommunication indoor unit costs an arm and a leg, an indoor intercommunication extension set is only installed at a general family, and indoor intercommunication extension set generally is contained on the metope of parlor, when the visitor calls out indoor intercommunication extension set, resident family must go to the parlor and answer, and has caused the inconvenience of answering to resident family like this;

3) problems such as noise and video distortion appear in existing building conversational system easily in the audio-video signal communication process.

Summary of the invention

The object of the invention is to overcome above-mentioned shortcoming, a kind of wireless videophone intercom system is provided, it is incorporated into one with visible dialogue system and DECT digital cord-less mechanics of communication, the DECT mechanics of communication is as a kind of digital cordless telephone system, with its superior transfer of data and disposal ability, provide powerful technical support for realizing the audio wireless communication.Yet, because the restriction of transmission rate utilizes the DECT mechanics of communication to realize that the wireless transmission of video does not have precedent so far.

For reaching above-mentioned purpose, the present invention adopts following technical scheme: a kind of wireless videophone intercom system, comprise: intercommunication indoor unit, cordless telephone client, described intercommunication indoor unit comprises control circuit assembly, Single-chip Controlling unit and cordless telephone service end, wherein:

1) control circuit assembly: be connected with the intercom system service wire, comprise: audio power amplifier circuit module, voltage stabilizing circuit module, key-press module, image display, cloth withdraw a garrison module and audio frequency and video handover module;

2) Single-chip Controlling unit: be communicated with switching, key scan, the defence area control of co-ordination between each assembly of control, audio frequency and video passage with each assembly of control circuit and cordless telephone service end;

3) cordless telephone service end: inside is connected with control circuit assembly and Single-chip Controlling unit; The outside is connected with the telephone wire of registering one's residence, and is connected with the cordless telephone client wireless simultaneously.

Adopt technique scheme, the present invention can realize following function:

1) color screen cordless telephone visual function: when the visitor passed through doorway main frame calling party, by the wireless transmission of DECT digital cord-less mechanics of communication, the color screen cordless telephone sent tintinnabulation, and this moment, its display can demonstrate visitor's image;

2) color screen cordless telephone intercommunication pickup feature: when the visitor when the main frame calling party of doorway, the user only need press color screen cordless telephone talk key and just can realize conversing with the visitor this moment;

3) color screen cordless telephone remote unlocking function: after confirming visitor's identity, the user can realize unlocking function by the unlocking function button of pressing on the color screen cordless telephone;

4) the color screen cordless telephone monitors the doorway machine function: the user can monitor the situation on doorway at any time by the color screen cordless telephone;

5) the color screen cordless telephone moves intercommunication function: in intercommunication indoor unit and color screen cordless telephone digital communication scope, the color screen cordless telephone can arbitrarily be shifted one's position, and does not influence normal use;

6) color screen cordless telephone cloth is withdrawn a garrison and alarm function: use color screen cordless telephone keyboard to be provided with, can realize deploy troops on garrison duty, withdraw a garrison (can establish 8 defence areas at most) in each defence area of intercom system, induction is triggered when the defence area, and cordless handset can sound the alarm, the prompting user.

Description of drawings

Fig. 1 realizes Organization Chart for the circuit of building conversational system of the present invention.

Embodiment

Below in conjunction with drawings and Examples the present invention is described in detail.

Embodiments of the present invention as shown in Figure 1, a kind of wireless videophone intercom system, comprise: intercommunication indoor unit 1 and cordless telephone client (color screen cordless telephone) 2, described intercommunication indoor unit 1 comprises control circuit assembly 11 and Single-chip Controlling unit 12 and cordless telephone service end 13, wherein: control circuit assembly 11: be connected with intercom system service wire 3, comprise: audio power amplifier circuit module 111, voltage stabilizing circuit module 112, key-press module 113, image display 114, cloth withdraw a garrison module 115 and audio frequency and video handover module 116; Single-chip Controlling unit 12: be communicated with the switching of co-ordination between each assembly of major control, audio frequency and video passage, key scan, defence area control etc. with each assembly 11 of control circuit and cordless telephone service end (DECT BASE) 13.Cordless telephone service end (DECT BASE) 13: inside is connected with control circuit assembly 11 and Single-chip Controlling unit 12.The outside is connected with the telephone wire 4 of registering one's residence, and is the wireless connections of color screen cordless telephone with cordless telephone client (DECT HANDSET) 2 simultaneously.

During work:

1) color screen cordless telephone visual function operation principle: during the main frame calling party of doorway, the image of doorway main frame camera collection transfers to intercommunication indoor unit 1 by " intercom system service wire " 3, by intercommunication indoor unit 1 Switch Video in DECT BASE (cordless telephone service end 13).DECT BASE (cordless telephone service end 13) with after the analog audio-video encoding and decoding with digital signal through wireless transmission, DECT HANDSET(cordless telephone client) 2 receiving video datas and showing in liquid crystal display screen receive voice data simultaneously and change into analog signal to audio frequency power amplifier;

2) color screen cordless telephone intercommunication pickup feature operation principle: doorway main frame calling party, intercommunication indoor unit MCU(Single-chip Controlling unit 12) and between the DECT BASE (cordless telephone service end 13) by the order of UART protocol transmission, through wireless transmission, color screen cordless telephone DECT HANDSET (cordless telephone client 2) receives instruction and sends ringing tone.Behind the cordless telephone off-hook, the extension set switch audio is to DECTBASE (cordless telephone service end 13), and audio coding decoding is realized the real-time intercommunication of color screen cordless telephone and doorway main frame through wireless transmission;

3) color screen cordless telephone remote unlocking function operation principle: in doorway main frame and the color screen cordless telephone communication process, press the unlocking function button, DECT BASE (cordless telephone service end 13) sends out " unlock command " to extension set, MCU(Single-chip Controlling unit 12) receives order, the break-make of control doorway electric control lock realizes color screen cordless telephone remote unlocking function;

4) mobile intercommunication function operation principle: pass through wireless receiving and dispatching between DECT BASE (cordless telephone service end 13) and the color screen cordless telephone, in the effective range of its wireless transmission, hand-holdable color screen cordless telephone of user and doorway main frame are conversed, and realize mobile intercommunication function;

5) cloth is withdrawn a garrison and the alarm function principle: the keyboard of color screen cordless telephone is sent to extension set by the UART agreement with " condition code " information, adopt the set cloth mode of operation of withdrawing a garrison, intercommunication indoor unit MCU(Single-chip Controlling unit 12) receive order after, enter the cloth pattern of withdrawing a garrison, the warning light in corresponding defence area is opened.When the defence area induction is triggered, MCU(Single-chip Controlling unit 12) " alarm order " sent it back DECT BASE (cordless telephone service end 13), the cordless telephone termination is received order, and " alarm song " sent in control, the prompting user.

The present invention is except above-mentioned intercommunication function, and this novel system is by the phone service wire, and the color screen cordless telephone keeps normal telephony feature, and realizes the switching of phone and intercom system.

Claims (1)

1. wireless videophone intercom system, it is characterized in that: comprising: intercommunication indoor unit, cordless telephone client, described intercommunication indoor unit comprise control circuit assembly and Single-chip Controlling unit and cordless telephone service end, wherein:

1) control circuit assembly: be connected with the intercom system service wire, comprise: audio power amplifier circuit module, voltage stabilizing circuit module, key-press module, image display, cloth withdraw a garrison module and audio frequency and video handover module;

2) Single-chip Controlling unit: be communicated with switching, key scan, the defence area control of co-ordination between each assembly of control, audio frequency and video passage with each assembly of control circuit and cordless telephone service end;

3) cordless telephone service end: inside is connected with control circuit assembly and Single-chip Controlling unit; The outside is connected with the telephone wire of registering one's residence, and is connected with the cordless telephone client wireless simultaneously.