KR101359579B1 - Full Digital Multi DVR Interphone - Google Patents

Abstract

The present invention relates to a full digital multi-TV interphone implemented to output a clear digital signal photographed by a digital camera to an LCD monitor.
However, since the conventional interphone has a function of simply photographing the visitor when the visitor presses the buzzer and shows it through the monitor of the main body, the user cannot know at all about the visitor when the user is absent, and the analog camera is used. In order to improve the problem, the present invention provides a monitoring device including a digital camera and a microphone operated by an infrared LED and a signal of a sensor unit, a central processing unit, a storage unit (DVR), and a USB memory. An interphone consisting of an interphone body including an LCD monitor and a speaker, wherein the monitoring device is installed at a plurality of places including a front door, a staircase, and a veranda, and each monitoring device has a digital image photographed by a digital camera. Signal and analog signal received from microphone are converted through AD converter Low voltage differential that converts digital voice signal to serial signal and transmits it to intercom body through digital transmission cable consisting of 2 wires for digital data conversion and 2 wires for power supply. A signal transmission chip (LVDS TX chip) is provided, and the intercom body converts a digital serial signal transmitted from a plurality of low voltage differential signaling signal transmission chips into an original signal, and generates a predetermined ID. A low-voltage differential signaling receiver chip (LVDS RX chip) for classifying, storing, and outputting by ID) is provided.
Therefore, the full digital multi-DTV intercom according to the present invention directly transmits clear digital images captured by a plurality of monitoring devices equipped with a digital camera and a low voltage differential signaling chip (LVDS Tx chip) without analog conversion and is directly connected to a home or office. The low voltage differential signaling chip (LVDS Rx chip) provided in the intercom body of the inside of the can be clearly output to the LCD monitor. In addition, the present invention can store shot images classified in time and time in a storage unit (DVR) provided in the interphone main body, select the user at a necessary time and output the selected images to a monitor, You can also check it on another computer. In addition, the present invention has a separate communication module in the interphone main body, and transmits a photographed image to an external monitoring device or a cellular phone, thereby enabling a visitor or a trespasser to be checked in real time even when the user is absent.

Description

Full Digital Multi DVR Interphone {Full Digital Multi DVR Interphone}

The present invention relates to a full digital multi-TV interphone implemented to output a clear digital signal photographed by a digital camera to an LCD monitor as it is. A digital camera and a low voltage differential signal transmission chip (LVDS Tx) at a position requiring monitoring install a plurality of monitoring devices equipped with a chip, and install an interphone main body equipped with an LCD monitor and a low voltage differential signaling chip (LVDS Rx chip) inside a home or office, The present invention relates to a full digital multi-TV interphone for transmitting and outputting a voice signal as a digital signal as it is.

In general, an interphone is a camera installed outside the front door of a house, and a main body is installed inside the front door so that when the visitor presses the buzzer outside the door, the camera operates to capture the visitor, and the captured image is displayed on the monitor of the main body. It is configured to allow the user to check the visitor and open the door.

However, since the conventional interphone has a function of simply photographing the visitor when the visitor presses the buzzer and displays the visitor through the monitor of the main body, the visitor cannot know at all about the visited person when the user is absent.

In addition, the conventional interphone has been limited to a simple visitor identification function that the image quality is extremely degraded by using an analog camera, and in particular, storage or external transmission is not implemented at all.

The present invention is to install a plurality of monitoring devices equipped with a digital camera and a low voltage differential signaling chip (LVDS Tx chip) in a location that requires monitoring, the LCD monitor and low voltage differential signal receiving chip ( It is an object of the present invention to provide a full digital multi-dial interphone for outputting and storing the video and audio signals input from a plurality of places as they are as a digital signal by installing an interphone main body having an LVDS Rx chip).

The full digital multi-DTV intercom according to the present invention includes a monitoring device including a digital camera and a microphone operated by an infrared LED and a signal of a sensor unit, a central processing unit, a storage unit (DVR), a USB memory and an LCD monitor. And an interphone main body including a speaker, wherein the monitoring device is installed at a plurality of places including a front door, a staircase, a veranda, and each monitoring device includes a digital video signal photographed by a digital camera and a microphone. The received analog signal converts the digital audio signal converted through the AD converter into a serial signal, and is composed of 2 wires for digital data transmission and 2 wires for power supply. Low voltage differential signaling chip (LVDS TX chip) for transmitting to the intercom body via a transmission cable is provided, The phone main body has a digital serial signal transmitted from a plurality of low voltage differential signaling transmitter chips, and is reserialized to an original signal, and a low voltage difference classified and stored according to a predetermined ID is stored and output. It is a technical feature that a signal receiving chip (LVDS RX chip) is provided.

The full digital multi-DV intercom according to the present invention directly transmits clear digital images captured by a plurality of monitoring devices equipped with a digital camera and a low voltage differential signaling chip (LVDS Tx chip) without analog conversion and directly inside the home or office. The low voltage differential signaling method chip (LVDS Rx chip) provided in the intercom body of the receiver can be clearly output to the LCD monitor.

In addition, the present invention stores the captured images classified according to the date and time in the storage unit (DVR) provided in the intercom body, the user can select at the required time to output to the monitor, if necessary move to the USB memory You can also check on another computer.

In addition, the present invention has a separate communication module in the interphone main body, and transmits a photographed image to an external monitoring device or a cellular phone, thereby enabling a visitor or a trespasser to be checked in real time even when the user is absent.

1 is a block diagram of a full digital multi-TV interphone according to the present invention;
2 is a block diagram of the monitoring device of FIG.
Figure 3 is a schematic circuit diagram schematically showing the principle of the low voltage differential signaling method applied to the present invention.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The full digital multi-TV interphone according to the present invention is implemented so that a clear digital signal photographed by a digital camera provided in the monitoring apparatus can be output to an LCD monitor without being converted into an analog signal.

As shown in FIG. 1, the full digital multi-DV intercom according to the present invention includes a monitoring device 10 including a digital camera and an interphone body 20 that outputs an image captured by the monitoring device 20. Apply.

The monitoring device 10 is an embodiment of the present invention, and has a hemispherical shape like a conventional CCTV camera, and generates an operation signal when the visitor approaches as shown in FIG. In this case, the sensor unit 12 for operating the infrared LED 11, the digital camera 13 for capturing an image according to the operation signal of the sensor unit 12, and the voice in accordance with the operation signal of the sensor unit 12 It is configured to include a microphone 14 for recording.

In this case, the sensor unit 12 may be implemented by using an infrared sensor for sensing the heat of the object in proximity, an image sensor for detecting the movement of the object in proximity, a photosensor composed of a transmitter and a receiver. In addition, the sensor unit 12 is an illumination sensor that detects the ambient illumination and generates a constant electrical signal is added to automatically turn on the infrared LED when there is an object in the night, it is possible to take a clearer image.

Since the present invention transmits a digital signal over a long distance by a low voltage differential signaling (LVDS) method to be described later, a conventional general transmission cable cannot be used.
That is, in the present invention, a digital transmission cable consisting of 2 wires for digital data transmission and 2 wires for power supply is used. As an embodiment, a jack having a data signal connection portion and a power connection portion is formed at the end of the digital transmission cable. It is implemented in such a way that the output terminal having a shape is simply inserted and coupled to the input terminal formed on the intercom body 20.

In addition, as shown in Figure 1, the intercom body 20 is a central processing unit 22 for generating a control signal and an output signal through a predetermined signal processing process of the digital signal transmitted from the monitoring device 10, A storage unit (DVR) 26 and a USB memory 30 for storing and sorting by date and time according to a control signal transmitted from the central processing unit 22, and an output signal transmitted from the central processing unit 22. In accordance with the LCD (LCD) monitor 23 for outputting the image and the speaker 25 for outputting the audio.

In this case, the LCD monitor 23 can directly output the transmitted digital signal, but since the speaker 25 outputs an analog signal, the D / A converter 24 is provided in front of the speaker.

Therefore, in the present invention, when an infrared sensor detects an object near and generates an operation signal, the digital camera 13 captures the visitor's image by the operation signal, and receives the visitor's voice from the microphone 14 to receive an interphone. The output through the LCD monitor 23 and the speaker 25 provided in the main body 20.

At this time, since the voice signal input to the microphone 14 is an analog signal, a separate A / D converter is provided to convert the voice signal.

In the present invention, the product is designed so that all steps of photographing, transmission, and output are realized as digital signals in order to realize a clearer image quality.

To this end, the monitoring device 10 converts the digital video signal photographed by the digital camera 13 and the analog audio signal received by the microphone 14 converted from the digital audio signal converted through the AD converter 15 into a serial signal. Low voltage differential signaling chip (LVDS Tx chip) (16) is provided to transmit via a digital transmission cable (Serializer), the intercom body 20 is a digital serial transmitted from the low voltage differential signaling signal transmission chip (16) A low voltage differential signaling receiver chip (LVDS Rx chip) 21 is provided to reconstruct a signal into an original signal.

The LVDS (Law Voltage Differential Signaling) is driven at 3.3V or 1.5V to transmit digital information at high speed through a copper wire, thereby enabling long-distance transmission of serial data at a speed of 1000Mbps. This low-voltage signal swing and current-mode driver output produce very low noise and are less susceptible to common mode noise, and power consumption is at least nearly constant at any frequency.

These LVDS are developed to provide high-speed data transfer to a variety of communications infrastructure applications such as base stations, switches, add / remove multiplexers, home applications such as set-top boxes, home / commercial video links, and medical ultrasound imaging and digital copiers. It provides flexibility in system partitioning. LVDS technology also provides a flexible architecture that allows system designers to place analog and digital signal processing blocks on separate boards and then transfer the digitized data from the A / D converter over the back of the cable.

Referring to the basic principle of the low voltage differential signaling (LVDS) applied to the present invention, as shown in FIG. 3, the transceiver (Tx) and the receiver (Rx) are paired to transmit the signal, and the 3.5mA flows in the transceiver 350mV appears at the receiving end as it flows into a circuit equivalent to a 10 ohm resistor. The receiver has a threshold voltage of 100mV and is configured to detect the swing from 0 to 2.4V. In the transmitter, the parallel signal is converted into a serial signal and transmitted. In this case, the serial signal is reconverted to a parallel signal and output.

The present invention proposes a full digital interphone device for directly transmitting a long distance without converting a digital signal including video and audio into an analog signal by purchasing an LVDS chip implementing the LVDS technology in one chip.

Furthermore, the monitoring apparatus 10 of the present invention is installed in a plurality of places including a front door, a staircase, a veranda, and simultaneously or selectively outputs multi-channel images to the LCD monitor 23 provided with the intercom body 20. can do.

For example, images captured by four digital cameras may be displayed by dividing each of four images on one LCD monitor 23, or one of the screens may be displayed as a full screen.

Since such a screen display method is a technique generally used for a conventional CCTV screen, a further description thereof will be omitted.

As such, when a system is implemented with a plurality of monitoring devices and a single interphone main body, a specific ID (ID) is assigned to distinguish each monitoring device, and each monitoring device 10 has a low voltage differential signaling type transmission chip. (LVDS Tx chip) 16 is provided, and the intercom body 20 includes one low classifying signal stored in a plurality of low voltage differential signaling type transmission chips 16 for storing and outputting the signals transmitted by a predetermined ID. It is preferable that a voltage differential signaling chip (LVDS Rx chip) 21 is provided.

On the other hand, the intercom body 20 of the present invention through the control signal transmitted from the central processing unit 22, a communication module for transmitting the video signal and the audio signal of the visitor to the external monitoring device 40 or the user's mobile phone 50 (27) is provided.

Therefore, the user can check who visited from the outside through the external monitoring device 40, the external monitoring device 40 to execute the monitoring program in a computer (not shown) installed on the outside, and The monitoring program monitors the screen and the voice transmitted through the Internet web server (not shown) in real time. This can be easily implemented by borrowing a method implemented in the homepage of a conventional security company (AD caps, etc.), and thus, detailed technical description thereof will be omitted.

In particular, the present invention can be utilized as a personalized security system by implementing an emergency signal sent to the user's mobile phone at the same time when the event (unauthorized intrusion, etc.) to operate the automatic monitoring function to go out and to transmit the captured image. .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims and their equivalents. will be.

10: monitoring device 11: infrared LED
12: sensor unit 13: digital camera
14: microphone 15: A / D converter
16: LVDS Tx chip
17; Output terminal
20: intercom body
21: Low voltage differential signaling chip (LVDS Rx chip)
22: central processing unit 23: LCD (LCD) monitor
24: D / A converter 25: speaker
26: storage unit (DVR) 27: communication module
30: USB memory 40: external monitoring device
50: cell phone

Claims (3)

An interphone consisting of a monitoring device including a digital camera and a microphone operating by signals from an infrared LED and a sensor unit, an interphone body including a central processing unit, a storage unit (DVR), a USB memory, an LCD monitor and a speaker. In
The monitoring device 10 is installed in a plurality of places including a front door, a staircase, a veranda, and each of the monitoring devices 10 receives a digital video signal photographed by the digital camera 13 and a microphone 14. The analog signal is converted into a serial signal by converting the digital audio signal converted through the AD converter 15 into a serial signal, and it is 2 wire for transmitting digital data converted into a serial signal and 2 wire for power supply. Low voltage differential signaling chip (LVDS TX chip) 16 for transmitting to the intercom body 20 via a digital transmission cable is provided,
In the intercom body 20, a digital serial signal transmitted from a plurality of low voltage differential signaling chip 16 is deserialized into an original signal, classified and stored according to a predetermined ID. A low voltage differential signaling receiver chip (LVDS RX chip) 21 for outputting is provided.
The method of claim 1,
The intercom body 20 has a communication module 27 for transmitting a visitor's video signal and audio signal to the external monitoring device 40 or the user's mobile phone 50 through a control signal transmitted from the central processing unit 22. Full digital multi-DTV interphone further comprising. delete

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