KR100479774B1 - Video telephone system - Google Patents

Abstract

The present invention relates to a video telephone system having a surveillance function capable of transmitting moving picture data by facsimile. In particular, the present invention relates to a technology for transmitting moving picture data by a facsimile having a common telephone network (PSTN) as a video telephone or a monitoring terminal equipped with a CCD camera, a liquid crystal display device, and a modem.

In the conventional facsimile, it is inconvenient to perform a call only by voice, and there is no function of performing a voice call while viewing the appearance or data of the other party by video. In particular, the communication operation of the moving picture in the facsimile is limited only to informing the emergency situation to the remote site or emergency call number (police, security security company number, remote phone, etc.). It merely informed of a particular crisis or emergency and did not provide an accurate visual indication of what went wrong.

Therefore, in the present invention, when a video telephone or a monitoring terminal used for monitoring or monitoring a specific area has an emergency situation caused by a specific movement, the moving picture data captured at the time as well as an emergency telephone call to a remote monitor can be captured by the facsimile. We present a videophone system that can be visually informed of an emergency by converting to an encoding method.

Therefore, the present invention provides a more accessible situation recognition regardless of the situation such as absence of a remote place, and there is an advantage in that it is possible to analyze video data stored at a later time at any time.

Description

Video telephony system with surveillance function that can transmit moving image data by facsimile {VIDEO TELEPHONE SYSTEM}

The present invention relates to a video telephone system having a surveillance function capable of transmitting moving picture data by facsimile. More specifically, the present invention relates to a technology for transmitting moving picture data to a fax machine having a CCD camera, a liquid crystal display device, and a modem, a video telephone or a monitoring terminal having a public telephone network (PSTN) as a connection line.

The facsimile was provided with telephone functionality and the ability to send and receive faxes, allowing remote users to easily send voice and text data in graphical and graphical form to faxes with specific numbers.

In addition, many functions have been provided to make telephone functions and fax transmission / reception functions more convenient. However, the facsimile was inconvenient because it was supposed to make a call using only voice, and there was no function to perform a voice call while watching the image or data of the other party by video.

As a conventional technique for solving this problem, a known technique "Application No. 10-1997-0056992, Name of the invention: Method of performing moving picture communication in a facsimile" is proposed.

In the above known technology, a method of performing moving picture communication in a facsimile having a CCD camera and a graphic display device and having an ISDN and a PSTN as a compatible connection line, wherein the moving picture data inputted through the CCD camera at the time of transmission is predetermined. Converts the data into an image through the ISDN network, outputs the moving image data input through the ISDN network to the graphic display device, and receives the received moving image data when the moving image data is received according to automatic detection of an incoming signal. It outputs to a graphic display device, and converts the moving image data input through the CCD camera to a predetermined encoding method and transmits it through the ISDN network to perform a moving image communication.

However, the above-described prior art is limited only to informing an emergency situation or the like to a remote location or an emergency call number (a police station, a security guard company number, a remote phone, etc.). It merely informs of a particular crisis or emergency and has a problem that does not give a clear visual indication of what happened.

Therefore, the present invention is to solve the above problems, the present invention is to provide a moving picture data of the point of time when the video phone or the monitoring terminal used for monitoring or monitoring in a specific area in accordance with a specific movement emergency to the remote monitor Its purpose is to visualize emergency situations by converting video data captured by facsimile, as well as telephone calls, into a coding method.

As a technical idea for achieving the above object of the present invention

In a video telephone system having a video telephone function and a surveillance function,

A detector for detecting a specific movement;

A CCD camera installed together with the detector to detect moving picture data regarding a specific movement;

A codec unit for digitizing the moving image data detected by the CCD camera through an image compression and restoration process;

A first storage unit for storing digital video data from the codec unit;

A control unit for transmitting video data detected from the CCD camera to a facsimile and controlling a video call and a surveillance function;

A second storage unit for storing video data detected from a CCD camera as data encoded in a G3 format under the control of the controller;

A modulation / demodulator for transmitting video data encoded in a G3 format through a PSTN network to a facsimile through a modulation / demodulation process under control of the controller;

A serial / parallel interface unit for interfacing moving picture data and various setting information data from the first and second storage units to a PC or a printer; And

It provides a video telephone system having a monitoring function comprising a display unit for displaying the video data detected from the CCD camera and the video for video calls.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

1 is a block diagram of a video telephone system having a surveillance function according to the present invention.

The video telephone / monitor terminal 100 shown in FIG. 1 includes a display unit (LCD) 102; A first storage unit (DRAM) 104; Control unit 106; A modulator 108; CCD camera unit 110; A second storage unit (SRAM) 112; Codec 114; Serial / parallel interface unit (SIO / PIO) 116; And a sensing unit 118. In addition, an emergency call / fax machine 120 and a PC / printer 122 are provided.

As described above, the present invention requires a video telephone system of a video telephone and a monitoring terminal having a motion sensor function, a CCD camera, a liquid crystal display, a modem, and a PSTN as a connection line.

In addition, during transmission, the moving image data input through the CCD camera is converted into a predetermined encoding method and transmitted through a PSTN network, and the stored data is separately stored and output to a display window or a printer of a liquid crystal display device or a PC. It features.

Next, the operation of each component will be described.

The display unit (LCD) 102 is composed of a liquid crystal display (LCD) and outputs information such as a menu on a screen when a specific function of a video phone or a monitoring terminal is set, or is stored in a video inputted by a CCD camera 11. It serves to display data.

The first storage unit 104 is composed of DRAM and stores various data information from the control unit 106 or data encoded by the demodulation unit 108 in the G3 format.

The control unit 106 is a kind of CPU configured as a PCP. The control unit 106 does not process video data input from the CCD camera 110, but merely controls functions such as a video telephone, a monitoring terminal, and the like. It serves to send the video data to (120).

The modulation / demodulation unit 108 is configured as a modem to transmit video data encoded data information of the G3 format to the facsimile 120 through the PSTN network.

At this time, the programming method and the control method for the modulation and demodulation unit 108 employs a Class 2 Fax Modem method and constitutes a more concise fax transmission control program.

The CCD camera 110 receives the real-time video data from a specific region or location as an input and provides the codec unit 114 via the second storage unit 112.

The second storage unit 112 is configured of an SRAM to store real-time video data input from the CCD camera 110 and to store data to be processed and stored by the codec unit 114.

The codec unit 114 is a video codec composed of a VCP and digitizes the video data coming from the CCD camera 110 in real time using an image compression and decompression algorithm such as H.263 and the second storage unit 112. ) To store.

At this time, the encoding method of the codec unit 114 follows T.4 protocol which summarizes the standards related to encoding of T.30 and Document of ITU-T Fax Session Protocol, and is specified in T.4. Group 3 fax.

The serial / parallel interface unit 116 is configured as an SIO / PIO to display moving image data or various setting information stored in the DRAM of the first storage unit 104 or the SRAM of the second storage unit 112. It is a serial communication interface (Serial Communication Interface) or parallel interface (Parallel Interface) for transmitting data to the display window or the printer 122.

The detection unit 118 is configured as a sensor and installed together with the CCD camera 110 installed in a specific region or location to detect a specific movement, and the real-time video data information of the detected time point is the codec unit 114 and the control unit ( 106) serves to provide a separate capture and storage process.

2 is a flowchart illustrating an operation process of a video telephone system with a sensing function according to the present invention.

First, the video phone and the monitoring terminal to maintain the standby state (S200), the CCD camera 110 and the detection unit 118 installed in a specific area or location to monitor the specific movement (S202).

At this time, if a specific movement is detected (S204), the real-time video data information of the detected time point is transmitted to the codec unit 114 and the control unit 106.

The codec unit 114 digitizes the video data coming from the CCD camera 110 in real time using an image compression and decompression algorithm such as H.263, and stores the digitized data in the second storage unit 112. Does not process the video data input from the CCD camera 110, but merely controls functions such as a video telephone or a monitoring terminal, and sends the video data to the facsimile 120.

Therefore, the system transmits a call signal to the emergency call 120 of a remote place such as a monitor, a police officer, or a security company through the PSTN network, and transmits the encoded data information of the G3 format to the facsimile 120. (S206).

In addition, video data and various setting information data stored in the DRAM of the first storage unit 104 or the SRAM of the second storage unit 112 are stored in the PC 122 through the serial / parallel interface unit 116. By transmitting to the display window or the printer 122, it is possible to analyze the video data stored separately later at any time if necessary to the user (S208).

As described above, according to the present invention, in a video telephone system of a video telephone or a monitoring terminal, an emergency call and a movement moment to a remote place (monitor, police, or security company) by a specific movement among video data input from a CCD camera in real time. By encoding the image data of the video data and sending it to a remote telephone or facsimile, it provides more accessible situation recognition regardless of the absence of the remote site, and it is also possible to analyze the video data stored separately later at any time. .

1 is a block diagram of a video telephone system having a surveillance function according to the present invention.

2 is a flowchart illustrating an operation process of a video telephone system with a sensing function according to the present invention.

<Description of Symbols for Major Parts of Drawings>

100: video telephone / monitoring terminal 102: display (LCD)

104: first storage unit (DRAM) 106: control unit

108: modulator 110: CCD camera

112: second storage unit (SRAM) 114: codec unit (CODEC)

116: serial / parallel interface unit (SIO / PIO)

118: detection unit 120: emergency call / fax

122: PC / Printer

Claims (3)

In a video telephone system having a video telephone function and a monitoring terminal function, A sensor configured to be configured as a sensor to detect a specific movement; A CCD camera installed in a specific area or location together with the detector to detect video data of a specific motion in real time; A codec unit for digitizing the moving image data detected by the CCD camera through an image compression and restoration process; A control unit for transmitting the video data detected from the CCD camera to a facsimile and controlling the functions of a video telephone and a monitoring terminal; A first storage unit for storing the moving picture data detected from the CCD camera as data encoded in a G3 format; A second storage unit for storing real-time video data detected by the CCD camera and video data digitized by a codec unit; A modulation / demodulator for transmitting video data encoded in a G3 format through a PSTN network to a facsimile through a modulation / demodulation process under control of the controller; A serial / parallel interface unit for interfacing moving picture data and various setting information data from the first and second storage units to a PC or a printer; And And a display unit for displaying the moving image data detected by the CCD camera and the moving image for the video call. The video telephone system having a surveillance function according to claim 1, wherein the codec unit encodes the T.30 protocol of the ITU-T and the T.4 protocol of the document, and the Group 3 fax method of the T.4 protocol is applied. . The video telephone system having a monitoring function according to claim 1, wherein the modulation and demodulation unit is applied with a Class 2 Fax Modem method and a fax transmission control program.