KR19990000402A - Multi-generation video door phone device - Google Patents

Abstract

The present invention relates to a multi-generation video door phone device, comprising: a microcomputer 32 for controlling transmission of a video signal and an audio signal when a visitor is called; A DTMF generator 36 for generating a DTMF signal corresponding to the generation selected by the visitor; An audio unit 35 for processing an audio signal supplied through the microphone 33 and outputting an audio signal according to the control of the microcomputer 32; An image processing unit 37 for processing an image supplied through the camera 34 and outputting an image signal under the control of the microcomputer 32; A call and image switching unit 38 for switching the audio signal output from the audio unit 35 and the image signal output from the image processing unit 37 according to the DTMF signal output from the DTMF generating unit 36; A connection unit 39 for transmitting the audio signal and the video signal supplied from the call and video switching unit 38 to the video door phone 40 under the control of the video door phone 40; And a speaker driver 41 driving the speaker 42 according to the control of the video door phone 40. According to the present invention, the video door phone function can be realized by only one camera installed in the front door of a multi-generational building by generating a DTMF signal and generating only the video door phone of the selected lake according to the selected lake.

Description

Multi-generation video door phone device

The present invention relates to a multi-generation video door phone device, in particular by generating a DTMF (Dual Tone Multiple Frequency, DTMF) signal according to the lake of the generation, so that only the video door phone of the selected lake is operated, The present invention relates to a multi-generation video door phone device capable of realizing a video door phone function with only one camera installed in a front door of a multi-generation building.

1 and 2 illustrate a conventional multi-connected video door phone device, which is a technique disclosed in Publication No. 96-43893. The technology disclosed in the above-mentioned patent publication allows connecting multiple monitors and multiple cameras through a data bus, allowing external visitors to be identified using a video door phone, and allowing residents in the same building to talk to each other. The purpose.

Referring to FIG. 1, a conventional multi-connected video door phone device includes a camera unit 20 for outputting a call signal and a call address and input / output a video signal and an audio signal when a call button is pressed, and the camera unit 20. Or a call signal from another monitor, the call unit compares the input call signal with its own address and outputs a call signal, inputs / outputs a video signal, and outputs a call signal for calling another monitor. 10 and a data bus 11 for transferring data between the monitor unit 10 and the camera unit 20.

The camera unit 20 is connected to the data bus 11 to output a data signal output from the camera unit 20 to the monitor unit 10 or to output a data signal applied from the monitor unit 10 to the camera unit ( The first bus connection unit 201 is transmitted to the inside of the 20 and the first constant current source unit 202 is connected to the first bus connection unit 201 and supplies a constant current.

The first bus connection unit 201 is connected to the first data generator 203 and the first data recovery unit 204, and the first data generator 203 and the first data recovery unit 204 are camera units. 20 is connected to the camera control unit 208 for controlling the overall operation.

In addition, a call signal generator 205 for generating a call signal as the call button is pressed is connected to the first data generator 203 and the camera controller 208.

The first data generator 203 receives a call address output from the camera controller 208 and a call signal output from the call signal generator 205 and receives a data signal corresponding to the input signal. Output to the first bus connection unit 201.

The first data recovery unit 204 decodes the data signal input through the first bus connection unit 201 and outputs the data signal to the camera controller 208.

In addition, the first video unit 206 for outputting a video signal to the first bus connection unit 201, and the first call unit 207 for making a voice call by inputting / outputting an audio signal is provided. The bus connection unit 201 is connected.

A first dip switch unit 209 for generating a call address is connected to the camera controller 208 so that the camera controller 208 receives the first dip when the call signal is input from the call signal generator 205. The call address applied from the position unit 209 is output and output to the first data generator 203.

Meanwhile, the monitor unit 10 includes a second dip switch unit 101 for generating a call address, a memory unit 102 for storing a preset address thereof, and a button unit 103 for calling another monitor. ), An LCD unit 104 for displaying a call when receiving a call from another monitor, and a second constant current source unit 106 for receiving a power from the power supply unit 105 to generate a constant current.

The second constant current source unit 106 is connected to the second bus connection unit 112, and the second bus connection unit 112 is connected to the first bus connection unit 201 of the camera unit 20 through the data bus 11. Connected.

The control unit 113 is connected to the second dip switch unit 101, the memory unit 102, the button unit 103, and the LCD unit 104 to display the call address output from the second dip switch unit 101. In addition to the output box, the monitor unit 10 is controlled.

The second data generator 107 is connected to the control unit 113 to receive a call address output from the control unit 113, and sends a data signal corresponding to the input call access to the second bus connection unit 112. Output

The second data recovery unit 108 is connected to the second bus connection unit 112 to analyze the data signal applied from the camera unit 20 through the second bus connection unit 112 to control the controller 113. Will output

The call signal detector 109 is connected to the second bus connector 112 to detect a call signal applied from the camera unit 20 or from another monitor through the second bus connector 112. The detected call signal is output to the controller 113.

In addition, as in the camera unit 20, the second image unit 110 and the second call unit 111 are connected to the second bus connection unit 112 to display the video signal on the monitor and enable voice calls. do.

The control unit 113 receives the output signal of the second data recovery unit 108 and compares it with its own address stored in the memory unit 102 and outputs a call signal according to the comparison result. In addition, when a call signal output from another monitor is detected by the call signal detection unit 109, the control unit 113 displays the call on the LCD unit 104, and inputs the call address output from the button unit 103. When receiving, the input call address is output to the second data generator 107.

Referring to FIG. 2, in the multi-connected video door phone device configured as shown in FIG. 1, the plurality of monitors M1-Mn are connected to the plurality of cameras C1-Cn.

In the conventional multi-connected video door phone device as described above, the call address is provided from the second dip switch unit 101 provided in the monitor unit 10 and the first dip switch unit 209 provided in the camera unit 208. As a result, a technology that allows residents in the same building to talk to each other has been proposed.

However, the multi-connected video door phone device as described above should be equipped with a monitor and a camera device on both sides of the call signal transmission side and the side receiving the call signal, respectively. In addition, when using such a device as a door phone, as a result, a separate camera device should be provided outside of each generation. Therefore, the multi-connected video door phone device has a disadvantage in that a large number of camera devices must be installed, and accordingly, a large cost is required for installation of the video door phone device.

In order to solve the above problems, the present invention generates a DTMF signal according to the selected lake of the generation so that only the video door phone of the selected lake is operated, even with one camera installed in the front door of the multi-generational building. Provided is a multi-generation video door phone device capable of realizing a video door phone function.

The present invention for achieving the above object and the microcomputer to control the transmission of the video signal and audio signal when the visitor calls; A DTMF generation unit generating a DTMF signal corresponding to a generation selected by the visitor; An audio unit for processing an audio signal supplied through a microphone according to the control of the microcomputer and outputting an audio signal; An image processor which processes an image supplied through a camera and outputs an image signal according to the control of the microcomputer; A call and image switching unit for switching the audio signal output from the audio unit and the image signal output from the image processing unit according to the DTMF signal output from the DTMF generating unit; A connection unit for transferring the audio signal and the video signal supplied from the call and video switching unit to the video door phone under the control of the video door phone; And a speaker driver driving the speaker according to the control of the video door phone.

The present invention can realize a video door phone function by using only one camera installed in a front door of a multi-generational building, thereby providing a video door phone device having a lower cost.

1 is a block diagram of a conventional multi-connected video door phone device.

FIG. 2 is a schematic diagram illustrating a connection state of a monitor and a camera included in the apparatus of FIG. 1. FIG.

3 is a block diagram of a multi-generation video door phone device according to the present invention.

4 is a detailed circuit diagram of the connection part of FIG. 3.

5 is a flow chart for explaining the operation of the multi-generation video door phone device according to the present invention.

<Explanation of symbols for main parts of drawing>

32: micom 33: microphone

34: camera 35: audio portion

37: image processing unit 38: call and video switching unit

39: connection part 40: video door phone

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 3, the multi-generation video door phone device according to the present invention includes a key input unit 30 having a keypad so that a visitor can input a desired lake, and a call button 31 for generating a call signal. ), A microcomputer 32 for controlling the transmission of a video signal and an audio signal according to the call signal output from the call button 31, and an input from the key input unit 30 under the control of the microcomputer 32. A DTMF generator 36 for generating a DTMF signal in accordance with a key signal, an audio unit 35 for processing an audio signal supplied through the microphone 33 and outputting an audio signal according to the control of the microcomputer 32; And an image processor 37 for processing an image supplied through the camera 34 under the control of the microcomputer 32 and outputting an image signal, and the audio according to the DTMF signal output from the DTMF generator 36. The audio signal output from the unit 35 and Call and image switching unit 38 for switching the video signal output from the image processing unit 37, and audio supplied from the call and image switching unit 38 through the audio line ADL and the video line VDL. A speaker 39 for transmitting a signal and a video signal to the video door phone 40 under the control of the video door phone 40 and a speaker for driving the speaker 42 under the control of the video door phone 40. It consists of a drive part 41.

In Fig. 3, reference numeral DTL denotes a line for supplying a DTMF signal, and reference numeral GND denotes a ground line. Reference numeral R4 denotes a resistor for supplying a voltage signal.

As illustrated in FIG. 4, the connection part 39 includes a transistor TR1 for transmitting a DTMF signal supplied from the call and image switching part 38 to the video door phone 40 through a resistor R1. And a transistor (TR2) for transmitting the audio signal supplied from the call and video switching unit (38) to the video door phone (40) according to the voltage supplied from the video door phone (40). The transistor TR3 transmits the video signal supplied from the affected part 38 to the video door phone 40 according to the voltage supplied from the video door phone 40.

The camera 34 is installed at the front door of the multi-generational building, and the connection unit 38 and the video door phone 40 are installed at each unit.

Similarly, key input unit 30, call button 31, microphone 33 and speaker 42 are also installed in the entrance of the multi-generational building.

Referring to the accompanying drawings, the operation of the multi-generation video door phone device according to the present invention configured as described above is as follows.

A visitor inputs a desired lake by using the key input unit 30, and then presses the call button 31, and a call signal is input to the microcomputer 32, and under the control of the microcomputer 32, the DTMF generator 36 ) Outputs the DTMF signal to the call and image switching unit 38.

At this time, power is supplied to the microphone 33 and the camera 34 respectively installed at the entrance of the large-generation building, and the audio unit 35 and the image processing unit 37 output audio and video signals under the control of the microcomputer 32. Output to the call and video switching unit 38.

Subsequently, the call and video switching unit 38 determines the corresponding generation according to the DTMF signal applied from the DTMF generating unit 36, and receives the audio signal and the video signal applied from the audio unit 35 and the image processing unit 37. Output to the audio line (ADL) and video line (VDL) of the generation.

The DTMF signal is transmitted to the video door phone 40 through the call and video switching unit 38 and the connection unit 39 through the DTMF signal line DTL, and the video door phone 40 is a resistor R4. Predetermined power supply voltage is supplied to the connection portion 39 through.

When the power supply voltage is supplied from the video door phone 40 to the connection unit 39, the audio signal and the video signal are transmitted to the video door phone 40 via the call and video switching unit 38 and the connection unit 39.

Accordingly, a predetermined ring signal sounds to the video door phone 40 of the generation called by the visitor, and when the video door phone 40 of the called generation is hooked off, the speaker driver 41 and the speaker 42 are turned off. A voice call circuit with the visitor is established.

When the video door phone 40 is hooked on as the call ends, the video door phone 40 stops supplying power to the connector 39.

At this time, the power supplied to the microphone 33 and the camera 34 is also cut off, and the visitor presses the call button 31 again or the power is cut off under the control of the audio unit 35 and the image processor 37. To help.

As described above, the present invention can provide a video door phone device having a lower cost since the video door phone function can be realized by only one camera installed in the entrance of a multi-generational building without having a separate camera for each generation. .

Claims (4)

A microcomputer 32 for controlling transmission of a video signal and an audio signal when a visitor is called; A DTMF generator 36 for generating a DTMF signal corresponding to the generation selected by the visitor; An audio unit 35 for processing an audio signal supplied through the microphone 33 and outputting an audio signal according to the control of the microcomputer 32; An image processing unit 37 for processing an image supplied through the camera 34 and outputting an image signal under the control of the microcomputer 32; A call and image switching unit 38 for switching the audio signal output from the audio unit 35 and the image signal output from the image processing unit 37 according to the DTMF signal output from the DTMF generating unit 36; A connection unit 39 for transmitting the audio signal and the video signal supplied from the call and video switching unit 38 to the video door phone 40 under the control of the video door phone 40; And a speaker driving unit (41) for driving the speaker (42) under the control of the video door phone (40). 2. The transistor according to claim 1, wherein the connection part (39) comprises: a transistor (TR1) for transmitting a DTMF signal supplied from the call and image switching part (38) to the video door phone (40); A transistor (TR2) for transmitting the audio signal supplied from the call and video switching unit (38) to the video door phone (40) according to the power supply voltage supplied from the video door phone (40); And a transistor (TR3) for transmitting the video signal supplied from the call and video switching unit (38) to the video door phone (40) according to the power supply voltage supplied from the video door phone (40). Door phone device. The method of claim 2, wherein the video door phone 40 supplies a power supply voltage to the connector 39 when the hookoff is performed, and cuts off a power supply voltage supplied to the connector 39 when the hookoff is performed. Video door phone device. The multi-generation video door phone device as set forth in claim 1, wherein the camera (34) is installed at a front door of a multi-generation building and at least one of them.