CN2508502Y

CN2508502Y - Recordable digital video intercom

Info

Publication number: CN2508502Y
Application number: CN 01259793
Authority: CN
Inventors: 郑文华; 郑澄徽
Original assignee: Huachan Science And Technology Co ltd
Current assignee: Huachan Science And Technology Co ltd
Priority date: 2001-08-27
Filing date: 2001-08-27
Publication date: 2002-08-28
Anticipated expiration: 2011-08-27

Abstract

The utility model relates to a recordable digital image intercom, which comprises an entrance machine and a plurality of subscriber machines using video and audio communication. The utility model has the improvement that the button of the entrance machine is connected with a data output controlling unit and a data input controlling unit in parallel for expanding other functions, a digital data processing unit for setting compression, a digital data processing unit for decompression and a transmission unit of the RS series (serial port series) in the entrance machine and the subscriber machines perform video and audio and button controlled mutual transmission. Therefore the speed is quick and the transmission wiring is reduced through a fully digital type transmission way, the installation of the stringing is easy and the cost is saved, the entrance machine can arbitrarily expand functions of automatic greeting and automatic video recording, and the practical structure of the entrance guard security guard is enhanced.

Description

Recordable digitized video intercom

Technical field

The utility model relates to the improvement on the digital handset, be meant a kind of especially to compress and to decompress and make unit, digital image place, and borrow RS series transmission unit to pass mutually, can reach transmission fast, reduce the transmission distribution, install easily, save cost, and can expand the ensure public security recordable digitized video intercom of strick precaution of the question and answer of making video recording automatically, reinforcement gate inhibition.

Background technology

The invention of intercom need not be opened the door people and can be engaged in the dialogue with the visitor of front door, it is very helpful that the filtration personnel are passed in and out the building management, the design of a new generation more has additional video camera on intercom, so not only make resident family hear front door visitor sound through loud speaker, more can be delivered in the clear appearance of knowing visit of seeing of indoor display by image, because its product uses general consumption market vast, general industry is actively research and development improvement invariably, so that self brand can occupy a tiny space in market with keen competition.

Structure as No. 410009 multi-functional intercom of the novel patent announcement in Taiwan, announce No. 410008 calling set and wireless interspeaker and close mechanism, and the location structure of No. 380791 intercom transmitting-receiving of bulletin words housing etc... all belong to the improvement of this respect, though wherein in new-type intercom, No. 433695 a kind of sound controlled wireless intercom pronunciation device that does not have the language difference of novel bulletin arranged at present than advanced design, mainly be after the microphone amplifying circuit, to reach before the transmission circuit, add the sound buffering circuit and a control circuit of a first in first out, one decision circuitry of giving orders or instructions, one D/A circuit, one A/D circuit etc. are judged and the circuit that cooperates.

In addition, announce the intervideo of No. 374525 a kind of tool audio amplifying and surveillance switch, generally divide into image and sound loop two partly, image is partly for connecting a monitor that can supervise visitor's image through the video signal amplifier, the sound loop is partly for being connected through sound intensifier and intercommunication microphone and the power amplifier that is connected with loudspeaker, it is characterized in that: supervise the keying circuit by electronic switch constituted between sound intensifier and power amplifier, more being provided with one, this input and one that supervises the keying circuit supervises switch and is connected, and is subjected to this control that supervises switch whether to determine this action that supervises the keying circuit; Constituting one only needs supervise switch by pushing this, and the sound signal that can make the visitor is directly by the broadcast that amplifies of the built-in loudspeaker of intercom.

But still can't break away from all structures of habit formula on its basic framework, have following shortcoming:

1, stringing complicated need sound and image separate, and the also independent backguy of need of button key, and every floor all needs independently to draw one group of line.

2, can't do the digital recording remote monitoring monitors and does not have a DI/D0 starting drive.

3, system still rests on simple form dialogue function, can't make video recording and transmits a distant place in body, does functions such as remote monitoring, statistics, analysis, does effective the combination with security personnel.

4, generally still all adopt linear analogue to transmit, even its speed of digital delivery also only is 7/ second picture of CIF (resolution 352*288).

Summary of the invention

Therefore, the utility model promptly aims to provide a kind of recordable digitized video intercom, also comprises: a doorway machine, be provided with a camera, a microphone, a loud speaker and a start button, and talk with subscriber computer with the picked-up image and with the digital audio circuit; The plural number subscriber computer, has a display, one microphone, one loud speaker and button, to obtain the image that camera transmits, unlatching with digital audio circuit and doorway machine talk and control gate, and its improvement part is: the button of this doorway machine and the data of being connected to are exported into control unit for expanding other function, and the numerical data processing unit of establishing compression and decompressing together in doorway machine and the subscriber computer, and the transmission unit of tandem port series is accomplished audio-visual and button is controlled mutual biography, whereby, with the transmission of pure digi-tal formula fast, reduce the transmission distribution, stringing is installed saved cost easily, and make the doorway function arbitrarily expand automatic greeting and function such as make video recording automatically, and strengthen gate inhibition's strick precaution of ensuring public security, this is a main purpose of the present utility model.

The following advantage of the utility model institute tool is that habit formula structure can't reach:

1, saves the cost of stringing, install easily.

But 2 setting of image are made video recording individual or continuously, and the computer of can arranging in pairs or groups does and makes video recording for a long time and do the monitoring of far-end line, and can be as statistics, the analysis of personnel's turnover.

But 3 digital audio synchronizations, and compression is arranged, so can save the storage area.

4, doorway machine can be treated as monitoring camera, but the sound on remote monitoring doorway.

5, can install various D1/D0 contacts additional in doorway machine, use in order to the collocation of doing various difference in functionalitys.See and function such as make video recording automatically as automatic greeting.

6, pure digi-tal formula transmission, transmission speed is fast, 22/ second picture of 30/ second Frame, 720*480 of CIF.

Description of drawings

Fig. 1 is the utility model circuit block diagram;

Fig. 2 can set up the circuit block diagram of memory and RS232 for the utility model.

Element number and title contrast in the diagram: 1... doorway machine 11.. camera 12.. microphone 13.. loudspeaker 14.. button 15.. digital audio circuit 16.. data import and export control module 17.. compressed digital data processing unit 18.. transmission unit 2... subscriber computer 21.. display 22.. microphone 23.. loudspeaker 24.. button 25.. digital audio circuit 26.. image-processing circuit 27.. decompression numerical data processing unit 28.. transmission unit 29.. transmission unit 3... flash memory 31.. quickflashing burning controller

Embodiment

As shown in Figure 1, the recordable digitized video intercom that the utility model is set, it also comprises basically: a doorway machine 1 and plural subscriber computer 2 are formed; Wherein:

This doorway machine 1 is provided with the button 14 that a camera 11, a microphone 12, a loud speaker 13, start usefulness, with the picked-up image, and with digital audio circuit 15 with subscriber computer 2 talks;

This plural subscriber computer 2, it has a display 21, a microphone 22, a loud speaker 23 and button 24, and to obtain the image that camera 11 transmits, with the unlatching of digital audio circuit 25 with doorway machine 1 talk and control gate, the part of its improvement is:

The button 14 of this doorway machine 1 and the data of being connected to are exported into control unit 16, for expansion, input keyboard, automatically make video recording promote security personnel or greeting such as goodbye automatically, other function such as welcome .., and in doorway machine 1 and the subscriber computer 2 with establishing compressed digital Data Processing unit 17 and decompression numerical data processing unit 27, and the transmission unit 18 of RS series and 28 is to reach audio-visual and button is controlled mutual biography.

During enforcement, the

transmission unit

18 and 28 of this two machine can be RS485, and all is located at the line end of two machines, and its compressed digital

Data Processing unit

17 and 27, in have H.263+, G.72 specification is handled in 3-1 decompress(ion) and compression, all is located at the front end of two machine RS485.

Compressed digital Data Processing unit 17 in the doorway machine 1 be positioned at camera 11, digital audio circuit 15, button 14, and data export into control unit 16 signal junctions; The decompression numerical data processing unit 27 of family machine 2 is positioned at image-processing circuit 26, digital audio circuit 25, button 24 signal junctions, and the

microphone

12,22 of two machines and

loud speaker

13,23 all join with

digital audio circuit

15,25 by means of A/D, D/A conversion.

Whereby, after making doorway machine 1 sound of image and microphone can be done the processing of A/D and s operation control, give compressed digital Data Processing unit 17 compressions, be sent to each floor via RS485 transmission unit 18 (two-wire or four lines) at a high speed again, after High-Speed RS 485 transmission units 28 receptions by each floor subscriber computer 2, giving decompression numerical data processing unit 27 decompresses and delivers to image-processing circuit 26 TV Out modules again and do the image calculation process after changed by D/A, again by the display 21 of domestic TV or special-purpose liquid crystal, sound is then via the two-way A/D of digital audio circuit 25, the D/A conversion, and spread out of and microphone 22 inputs by loud speaker 23 after processing control, sound can be done two-way intercommunication, whole system gate end can be by one group of button 14 control operation, and each floor respectively has the switch latch at a button 24 control gates, data, sound, image all can be by two or four lines transmission, so can save the cost of wiring, all can adopt parallel according to its every floor of this design, backbones get final product work so the distribution installation is gone up conveniently more handy than habit formula with expansion so an available backbone, other equal parallel connections are gone up.

And as shown in Figure 2, when implementing, it can add another RS232 transmission unit 29 on numerical data processing unit of its subscriber computer 2, make and import data into the computer record file, and alternative installs flash memory 3 and quickflashing burning controller 31 additional in doorway machine 1 and subscriber computer 2, can can install flash memory 3 additional in front door or each floor is actuating type individual or many and makes video recording, or two machine make video recording simultaneously and have double effects and can inspect the image of being recorded, reach the purpose of anti-stealing safety in order to filter the visiting guest.

From the above as can be known, the effective design of the utility model can make existing intercom distribution be tending towards simplifying really and also transmission speed fast, and can expand and conveniently set up the function of making video recording in many ways, the building administrative staff monitored have greatest benefiting on the security system.

The above embodiment only is explanation technological thought of the present utility model and characteristics, its purpose makes the personage who has the knack of this skill can understand content of the present utility model and is implementing according to this, when not limiting claim of the present utility model with it, promptly the equalization of doing according to the spirit that the utility model disclosed generally changes or modifies, and must be encompassed in the claim scope of the present utility model.

Claims

1. recordable digitized video intercom mainly comprises:

One picked-up image and the doorway machine of talking with subscriber computer with the digital audio circuit are provided with a camera, a microphone, a loud speaker and a button;

A plurality of obtain image that camera transmits and with digital audio circuit and the doorway machine talk subscriber computer of the unlatching of control gate also, have a display, a microphone, is raised one's voice and button, it is characterized in that:

The button of this doorway machine and the data of being connected to are exported into control unit for expanding other function, and doorway machine and subscriber computer are interior with establishing compressed digital Data Processing unit, decompression numerical data processing unit, and the transmission unit of tandem port RS series accomplishes audio-visual and button is controlled mutual biography, whereby, with the transmission of pure digi-tal formula fast, reduce the transmission distribution, make stringing install easily, save cost, and make the doorway function arbitrarily expand automatic greeting and function such as make video recording automatically, and strengthen gate inhibition's strick precaution of ensuring public security.

2. recordable digitized video intercom as claimed in claim 1, it is characterized in that: this transmission unit is RS485, be located at the line end of two machines, and have H.263+ in the numerical data processing unit, G.723-1 specification is handled in decompress(ion) and compression, it all is located at the front end of two machine RS485.

3. recordable digitized video intercom as claimed in claim 1 is characterized in that: alternative installs additional and can record audio-visual flash memory and quickflashing burning controller with the enhancement security personnel in this doorway machine and the subscriber computer.

4. recordable digitized video intercom as claimed in claim 1 is characterized in that: can add one on the subscriber computer numerical data processing unit and import data into RS232 transmission unit that computer record files.