KR100705169B1 - Imagephone and imagephone control method - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video telephone, and more particularly, to a video communication system that enables a video telephone to perform not only an original video telephone function but also a door phone function and a security function. After the user sets the auto answer mode for door phone and CO line call by the user through the keypad, and enters the appropriate password set in advance at the other terminal, the video phone operates the camera to receive indoor / outdoor video information remotely. By monitoring the threat of missed security threats from a remote location, the user can save the video or audio of the visitor input from the doorphone in the internal memory. If you input the proper password set in advance from the other terminal, you can remotely monitor and save the recorded video or audio, and when you use the video phone, you can selectively monitor the CO line signal input through the door phone output and network connection. A video telephone system having an input signal selector The ball.

Door phone, telephone, camera

Description

Video Communication System and Video Communication Method {IMAGEPHONE AND IMAGEPHONE CONTROL METHOD}

1 is a block diagram of a typical video telephone

2 is a block diagram of a video telephone of the present invention.

3 is an operation flowchart of the video communication system of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video telephone, and more particularly, to a video communication system that enables a video telephone to perform not only an original video telephone function but also a door phone function and a security function. 1 is a block diagram showing the configuration of a general video telephone, the configuration of which is as follows.

A camera 1 made of a charge coupled device (CCD) 1b for converting an image input through the lens 1a into an electric video signal;

A camera signal processor (2) for correcting the video signal converted by the camera (1) to an analog signal of a predetermined level and outputting the digital signal to the digital signal processor (DSP) 3;

 The video signal inputted to the camera signal processor 2 and the video signal restored and inputted are digitally processed and output to be displayed on the monitor 4, and the luminance signal Y and the color signals Cr and Cb for image compression. Digital signal processor 3 for outputting the

An image compression / restoration unit 5 which is responsible for compressing and restoring an input image signal;

A modem 6 for transmitting the compressed video and audio signals and for receiving the video and audio signals transmitted;

A dial 7 for outputting a signal according to the button selection of the sender;

A system control unit (CPU) 8 for controlling each unit for processing, compressing, restoring, and transmitting image signals by means of dial button signals;

It consists of a memory 9 in which information such as a telephone number required by the user is stored.

The operation of the video telephone configured as described above is as follows.

First, an image input through the lens 1a of the camera 1 is converted into an electric image signal through the CCD 1b and input to the camera signal processor 2.

The camera signal processing unit 2 controls the driving of the CCD 1b, corrects the input image signal as an analog signal of a predetermined level, and outputs the analog signal to the digital signal processing unit 3.

In addition, the digital signal processor 3 displays the input image through the monitor 4 after performing clamp, RGB color control, and brightness control on the input image signal, and for image compression for transmission to the outside. The luminance signal Y and the color signals Cr and Cb are converted into a predetermined format and output to the image compression / restoration unit 5.

Then, the image compression / restore unit 5 compresses the image signal input from the digital signal processor 3, and restores the image signal input through the modem 6,

At this time, when the transmitting side makes a call to the receiving side using the dial 7, the system controller 9 recognizes this and enables an analog telephone through a handset (not shown) and a communication line. Therefore, in order to perform video communication, a telephone line connection with a receiver is performed by a sender dial, and then a voice connection and a data transmission are performed after waiting for a modem connection. However, since each device functioning as a door phone or a security function existed separately, each device had to be moved to a place where the corresponding device is located for each use, and a separate cost was required when installing each device. .

 An object of the present invention is to set the auto answer mode for door phone and trunk line call through the keypad of the video telephone by the user in the absence, and then input the appropriate password set in advance on the other terminal, and the video telephone operates the camera. In addition, it is possible to remotely monitor the missed security threats by moving images by receiving other image information from a remote location. Another object of the present invention is to store the video or audio of the visitor input from the door phone in the internal memory when there is an input signal of the door phone by the absent visitor and to set the appropriate password in advance in the counterpart terminal. If you input it, you can transmit it to remote place for monitoring. It is still another object of the present invention to provide a video telephone system having an input signal selection unit capable of selectively monitoring a trunk line signal input through an output of a door phone and a network connection unit when using a video telephone.

The present invention for achieving the above object is a door phone installed outdoors for transmitting the image or voice of the visitor to the video telephone; A video telephone installed in the room and capable of transmitting and receiving video and voice with the door phone, and capable of video and audio communication with a counterpart communication terminal; And an input signal selection means capable of selecting and monitoring the video / audio information input from the door phone or the video / audio information input through a counterpart video phone.

Hereinafter, with reference to the accompanying drawings, the operation and effects of the embodiment of the video communication system and the video communication method according to the present invention will be described in detail.

In general, a video telephone is connected to a communication network to process voice data and video data from a communication counterpart, and to process its own voice data and video data to be transmitted to the counterpart communication terminal.

2 is a block diagram showing the configuration of an outdoor door phone and a video telephony system capable of remote monitoring in addition to basic video communication, according to an embodiment of the present invention. The image input from the camera 101 attached to the main body is applied to the image signal processing unit 110 of the main body of the video telephone 100, and the image signal processing unit 110 is an image input from the camera 101. Is digitally converted and compressed using a compression codec.
The voice input from the microphone 103 connected to the video telephone 100 is applied to the voice signal processor 111 of the video telephone main body 100. The voice signal processor 111 compresses a voice signal input from the microphone 103. In addition, the image signal processor processes the image data input from the communication counterpart through the network connection unit 109, and restores the compressed image data.
In addition, the voice signal processor processes voice data input from the communication counterpart through the network connection unit 109 and restores the compressed voice data. The image signal processor 110 processes an image of a visitor input from the door phone 105 according to the feature of the present invention, and displays the processed image on the monitor 102.
In addition, the voice signal processor 111 processes and compresses a visitor's voice input from the microphone of the door phone 105, stores the compressed voice in the memory 106, and stores the guide message stored in the memory 106. Output to the speaker of.
The network connection unit 109 is connected to a communication network and demultiplexes the compressed voice data and the video data from the communication counterpart and provides them to the voice signal processing unit 111 and the video signal processing unit 110, respectively. When the image / audio data is transmitted, the data of the audio signal processor 111 and the video signal processor 110 are multiplexed and transmitted to the communication counterpart through a communication network.
The monitor 102 displays an image according to the image data reconstructed by the image signal processing unit 110, and the speaker 104 transmits the audio data reconstructed by the audio signal processing unit 111. On the other hand, the keypad 108 is provided with a number key (Digit Number Key) and a plurality of function keys to allow the user to control the operation of the video phone as well as dialing. And an input signal selection key capable of selectively monitoring the voice / video signal input from the door phone 105 signal or the trunk line signal through the keypad 108, and according to a control signal of the input signal selection key. The CPU 107 controls each part.
The keypad 108 is configured to set the missed call answering mode so as to be able to respond when there is an input signal by the missed visitor, and when there is a remote monitoring request for monitoring at a remote location, the keypad 108 can answer the call. Allows the vacation responder mode to be set.
Hereinafter, the missed answer mode and the auto answer mode for the trunk line call will be described. The input signal from the network connection unit 109 or the door phone 105 is input to the central processing unit 107 while the user sets the missed call answering mode for the door phone or the trunk line through the keypad 108 for the missed call answering machine. When inputted to the central processing unit 107 determines the input signal to operate the memory 106, the image signal processing unit 110, the audio signal processing unit 111, the network connection unit 26, etc. according to the user's setting state By controlling, to control the respective parts accordingly.
Hereinafter, a detailed description will be given with reference to the flowchart of FIG. 3. First, the central control unit (CPU) 107 detects an input signal (S200), and whether the input signal is a signal input from the door phone 105 or a trunk line signal input through the network connection unit 109 in step S201. If it is determined that the door phone input signal is in the next step S203, the automatic answering mode is determined. If not, the video input from the door phone is output to the monitor of the video phone (S207), and then the video phone and the door phone. Make a voice call with (S208).

If it is determined in step S203 that the absence of the automatic answering mode, the guide message stored in the memory is output to the door phone body 105 (S204). Thereafter, it is determined whether the mode of storing the output of the door phone main body 105 is stored, and the door phone output signal is stored in the memory 106 of the video phone (S205 and S206).

On the other hand, if it is not the door phone signal in step S201 determines whether it is a trunk line signal in step S301, it is determined whether or not in the automatic answering mode (S302) to determine the voice / video call mode through the network connection if not in the automatic answering mode It executes (S306). When it is determined in the auto-response mode in step S302, the guide message stored in the memory 106 is output, the response message is stored in the memory (S303), and in step 304 it is determined whether there is a remote monitoring request. An image or an image stored in the memory 106 is output through the network connection unit 109.
Hereinafter, the remote monitoring mode will be described in detail. When the user is absent, the user inputs the auto attendant key for the video telephone through the keypad 108, and the central processing unit (CPU) 107 recognizes the input of the auto answer key and sets the auto answer mode. When the missed call is received from the network connection unit 109 detects the ring signal, and when the ring signal is detected, the central processing unit 107 controls the network connection unit 109 to establish a communication line. The central processing unit 107 then performs the automatic response of the absence and the control of transmitting the monitored image to the remote location as follows. First, the missed guidance message is read and sent to the other party through the network connection unit 109.

Then, the other party waits for a response for a predetermined time. When the other party hears the missed guidance message, presses his contact telephone number, and the DTMF tone corresponding to the telephone number is input, the central processing unit 107 decodes it and stores the telephone number in the memory 106. On the other hand, when the user wants to receive the monitoring information of the room that the user is absent from the remote location, the password (number) set in advance in the DTMF tone input step is input, and the DTMF tone corresponding to the number is received. The received password is compared with the password set by the automatic response mode in the central processing unit 107. Based on the comparison result of the encryption, it is determined whether to transmit the remote surveillance image.

The present invention enables not only video communication, which is an original function of a video communication terminal, but also remote monitoring of a door phone or an indoor image from a terminal in another region in the absence of the video communication terminal, thereby providing more reliable remote monitoring for a threat to crime. It can be carried out by using, and by sharing the data processing means, such as video / audio of the door phone installed in the room, and the data processing means of the video telephone, there is an effect that can reduce the cost and ease of use.

Claims (5)

delete A door phone installed outdoors to transmit a visitor's image or voice to a video phone, A keypad equipped with keys for dialing and function keys for selecting various functions during an absence, Camera for inputting indoor and outdoor video signals, A memory for recording voice and video input through the door phone or a video signal input through the indoor and outdoor cameras and recording a missed guidance message when the auto answering mode is set;  A network connection unit for transmitting video and audio signals input from the camera or door phone upon request of a remote site during execution of video communication and automatic answering mode;  And a central processing unit which performs a function of determining whether or not a password is matched in each control unit and a remote monitoring mode. The method of claim 2, wherein the memory A video communication system for a video telephone, characterized in that it is a tape medium or a semiconductor memory element. The keypad of claim 2 wherein the keypad is A video communication system of a video telephone, characterized in that a function key is further provided for performing a missed answering machine and sending a remote surveillance video / audio information. Determining whether the input signal is a missed response mode for each case together with whether the input signal is a door phone signal or a trunk line signal; As a result of the determination, if the input signal is a door phone signal and the missed answering machine mode, outputting a guide message and storing the door phone output signal, and if not in the answering machine mode, forming a call path between the door phone and the video telephone; As a result of the determination, if the input signal is a trunk line signal and the auto attendant mode is absent, after outputting the guide message and storing the response message, the video signal of the video telephone or the camera is transmitted through the network connection according to whether the remote monitoring is requested. Doing; As a result of the determination, if the input signal is a trunk line signal and is not in the answering machine answering mode, forming a call path through the network connection unit; Remote monitoring and video communication method of a video communication system comprising a.

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