KR20050102325A - A multi function video phone system and a visitor image recording method thereof - Google Patents

Abstract

In the multi-function video phone device, motion detection enables image display and automatic recording around the door, and transmission to a remote location provides an active crime prevention function that copes with intruders.

The present invention relates to a video phone comprising an outdoor unit equipped with a camera and an indoor unit connected to a communication line and installed indoors, wherein an image signal inputted through a camera provided in the outdoor unit is acquired into a luminance signal and a color signal. A video decoder for separating and extracting, a codec IC for compressing the video signal of the visitor applied by the video decoder, and a first memory unit for storing the visitor video compressed by the codec IC in a designated address area; Motion detection unit that checks the luminance signal from the video signal obtained by the video decoder and detects the motion by detecting the change in the luminance level of the specific part of the pixel, and the visitor's video recording, playback, and security functions according to the motion detection in the video signal. It is responsible for the general functions related to the activation of the main processor, and compares the file amount of the currently acquired compressed image with the file amount of the previously acquired compressed image to detect movement and activates the automatic recording and method function. Transmitting status information about intruder occurrence in the household by connecting the second memory unit where the application program for executing the overall function of the processor is set, and the mobile communication terminals of various institutions and residents who perform security functions through wired and wireless networks. It includes a communication unit.

Therefore, it provides an active security function by the automatic recording function according to the movement of the visitor.

Description

Multi-function video phone device and its video recording method {A MULTI FUNCTION VIDEO PHONE SYSTEM AND A VISITOR IMAGE RECORDING METHOD THEREOF}

The present invention relates to a multi-function video phone device, and more particularly, multi-function video such that the image display and automatic recording around the door through the motion detection is executed, and the active security function to cope with the intruder by remote transmission is provided. A phone apparatus and a visitor video recording method thereof.

As is well known, the video phone apparatus may be distinguished from an outdoor unit installed at a predetermined position around a door or a door per furniture and an indoor unit installed indoors.

The outdoor unit is provided with a camera, a handset, and a doorbell switch, and the indoor unit is provided with a handset, a display, a door lock / unlock switch, and various switches for setting a security function.

Therefore, the residents in the household can check the visitor through the video of the visitor displayed by the visitor and the call by the handset to determine whether the door is opened and whether the method function is set.

It is already known that such video phone devices have a built-in memory device such as a magnetic tape and a DVD (Digital Video Disc) device, so that video information can be recorded in a condition such as when a resident is absent. It is to be set through the switches for security function setting before going out.

In addition, as a video phone device installed in an apartment house, such as an apartment, as described above, in addition to the outdoor unit installed at any position around the door or the door, a camera is further installed at a place such as a lift and a parking lot, and installed in a guard room and furniture. A collection management system has been implemented to collect image information of the above-mentioned elevator and parking lot through an indoor unit and to obtain the same information for each household.

The above-described conventional video phone apparatus is configured to continuously record video information at the time of member setting, so that when recording the video information, the video memory device continuously records to the frame memory in order to obtain a vast amount of video information in the system configuration. If the capacity is exceeded, memory management is not efficient, such as no further video information can be recorded, and the frequency of use of the bus is increased for continuous storage of video information, resulting in performance degradation of the system.

In addition, the conventional video phone device has a problem that if a visitor intentionally damages the camera or blocks the lens part, there is no means to alert the user, and thus it is difficult to cope with the planned intrusion. After the damage, the perpetrator will not be able to catch the on-site, resulting in damage to the device.

In order to solve the various problems described above, the applicant proposes a video phone device which is patented on February 04, 1998 and registered with the patent number 0274691.

In case of Patent Registration No. 0274691, an infrared sensor is installed in an outdoor unit, and a visitor's doorbell operation signal is not detected through a call generating unit within a predetermined time while a visitor is detected through an infrared sensor, or a resident is in a condition of absence. When the visitor is detected through the infrared sensor in the set state, the video information and the audio information input through the camera and the handset are recorded in the video memory and the voice memory.

However, in this case, an infrared sensor must be separately installed in the outdoor unit, and a device for processing the signal thereof must be mounted in the indoor unit, resulting in a cost increase.

In addition, in the case of the existing video phone device, the connection between the outdoor unit and the indoor period is normally connected with four lines, and since the wiring is installed according to this, two lines are additionally required to install the infrared sensor. In order to mount an infrared sensor on a video phone device, there is a problem that a lot of trouble and difficulty due to the expansion of the line and the cost of equipment increases.

In addition, when the line of the additional infrared sensor is exposed to the outside when the intruder recognizes this and cuts the line, there is a problem that the function of the infrared sensor is not utilized.

In addition, the infrared sensor does not operate normally when there is a glass window, so if the intruder hides behind the glass plate, the infrared sensor cannot detect it and the automatic recording function cannot be executed, so that active countermeasures against the intruder are impossible. There is one problem.

The present invention has been invented to solve the above problems, the purpose of which is to activate the recording function when the movement of the visitor is input to the camera according to the visitor's approach to automatically record the visitor's video, Active security features are provided according to suspicious behavior.

In addition, by connecting the module only to the existing video phone device, the automatic recording function according to the motion detection is provided without additional line extension.

In addition, by using the recording function by detecting the visitor's movement to effectively use the limited memory space.

The present invention for realizing the above object is a video phone device which is installed in a door or an outdoor unit installed around the door and connected to the communication line to the camera and installed in a predetermined position in the room, the indoor unit is A video decoder which acquires an image signal input through a camera provided in the outdoor unit and separates the image signal into a luminance signal and a color signal; A codec IC for compressing a video signal of a visitor applied by the video decoder; A first memory unit which stores an image of a visitor compressed by the codec IC in a designated address area; A motion detector for detecting a motion by detecting a change in a luminance level of a specific pixel by checking a luminance signal in an image signal acquired and separated by the video decoder; A main processor for managing general functions related to video recording and playback of a visitor according to motion detection in a video signal and activation of a security function; A second memory unit storing an application program for executing general functions of the main processor; It provides a multi-function video phone device further comprises a communication unit for transmitting the status information on the occurrence of intruders in the household by connecting the mobile communication terminal of various institutions and residents to perform a security function through wired and wireless networks.

In addition, the present invention is installed in the door or the door is connected to the outdoor unit provided with a camera and the communication line and the indoor unit is installed in a predetermined position in the room, when the power is supplied to the camera provided in the outdoor unit is always Obtaining an image around the door by being turned on; Processing an image acquired by the camera and displaying the same on a display of an indoor unit and checking a luminance signal of an image signal to determine whether a change in luminance level is detected in a specific pixel; Determining that there is a movement of a visitor when a change in the luminance level is detected in the specific partial pixel, and activating an automatic recording function to compress and store the visitor's image. Provide recording method.

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

As can be seen in Figure 1, the multi-function video phone device according to the present invention, through the outdoor unit (3) and the outdoor unit (3) and the communication line (A, B) which is installed at a predetermined position around the door or door for each furniture It is connected and consists of an indoor unit 5 installed at a predetermined position in the furniture.

The outdoor unit 3 includes a call generator 35 for a visitor to call a resident in a household, a camera 33 for inputting a visitor's image, and a handset 31 for a visitor to make a voice call with a resident in the household. do.

In addition, the indoor unit 5 is a display 53 for displaying the image of the visitor input through the camera 33 of the outdoor unit 3, the handset 51 for the residents in the household to make a voice call with the visitor; Adjustment knob Kb1 for adjusting the color and contrast of the image displayed on the display 53, a plurality of switches SW1 for setting the security function, ten keys 0-9 and function keys (*, #) In the case of a telephone call using the handset 51, a button (Btn1) for selecting and inputting the telephone number of the counterpart to be connected, a unlock button (Btn2) for releasing the door lock, and an intruder in a state where a security function is set It is composed of a speaker (ASP) that emits alarms and warning sounds when is detected.

As shown in FIG. 2, the main board of the indoor unit 5 includes the video decoder 551, the codec IC 552, the first memory unit 553, the motion detector 554, and the video encoder. 555, a main processor 556, a second memory unit 557, a communication unit 558, and a late calendar chip 560.

In the above, the video decoder 551 obtains an image signal input through the camera 33 provided in the outdoor unit 5, and separates the image signal into a luminance signal and a color signal.

The codec IC 552 compresses the video signal of the visitor applied by the video decoder 551 to store it in the first memory unit 553, and reproduces the visitor image compressed and stored in the first memory unit 553. It is responsible for restoring it if required.

The first memory unit 553 functions as an image buffer for storing the image of the visitor compressed in the designated address area under the control of the main processor 556 which manages the general functions and operations of the main board.

The motion detector 554 checks the luminance signal in the image signal acquired and separated by the video decoder 551, and determines that there is a visitor near the door when a change in the luminance level is detected in the pixel for the specific part. Outputs information to activate the auto recording function.

The main processor 556 records the visitor's video in the multi-function video phone device and plays back the recorded video, connects the call to the outside, and transmits the visitor's video recorded when the absence is set to the occupant's mobile communication terminal. The overall operation of activation and the like is controlled, and if a file amount change of the compressed image information is detected by comparing the file amount of the current compressed image information acquired from the codec IC 552 with the file amount of the previous compressed image information, It determines that there is a visitor nearby, and outputs information for activating the automatic recording function.

That is, when a motion is detected, a difference occurs between the amount of compressed information in the previous state and the amount of information after the motion is detected. do.

The second memory unit 557 stores an application program for executing various functions of the main processor 556.

The communication unit 558 connects mobile communication terminals of various organizations and residents who perform a security function through wired or wireless networks, and transmits status information on whether an intruder occurs in a household.

In addition, the communication unit 558 may be connected to a bank, securities, aviation, CDMA network, Internet network to receive a variety of comprehensive information communication services.

The fountain chip 560 is connected to the main processor 556 to recognize and display current date and time information.

In addition, the main board according to the present invention having a configuration including the above functions can be used in combination with a video phone or a general video phone that is already installed in the furniture.

However, in the case of a pre-installed video phone or a general video phone, the power of the camera is normally kept off and power is supplied to the camera only when the occupant is called using a doorbell, which is a call generating means.

Therefore, in the case of combining the main board according to the present invention, the power supply unit 700 is connected and used as shown in FIG. 3 so that power can be supplied to the camera at all times.

In this case, when the power of the power supply unit 700 flows back to the internal circuits of the main board and the video phone device, breakage of the circuit is caused. Therefore, a diode D1 is installed to prevent this.

Referring to FIG. 4, which is a flowchart for an operation of automatically recording a visitor image according to motion detection in a multifunction video phone according to the present invention including the above-described function, will be described.

In the present invention, the missed surveillance function set when the occupant is out of the way as the conventional video phone uses the security function setting switch (SW1), so a person skilled in the art can easily understand the well-known technology, detailed description thereof will be omitted.

When the mainboard according to the present invention is coupled to a pre-installed video phone or a general video phone, the automatic recording function is automatically executed according to the motion detection in the present invention.

When power is supplied to the video phone (S101), the camera 33 is always supplied with power to perform a monitoring function of acquiring an image around the door (S102).

The video decoder 551 performs image processing of separately extracting an image of a door periphery acquired by the camera 33 into a luminance signal and a color signal, and then encodes the image through a video encoder 555 to display the image on the display 53. Displays an image around the door to be input (S103).

In this case, the motion detector 554 checks the luminance signal in the image signal processed by the video decoder 551 (S104) and determines whether a change in the luminance level is detected in the pixel of the characteristic portion (S105).

If the change of the luminance level in the specific partial pixel is not detected in the check of the luminance signal, the display returns to the process of S102 the image around the door obtained by repetition of the above-described operation.

However, when a change in luminance level is detected in a pixel of a specific portion, information about the same is applied to the main processor 556.

Accordingly, the main processor 556 activates the recording mode by determining that the luminance level is changed by the movement of the visitor as the visitor is present around the door, and activates the recording mode, thereby displaying the image of the visitor input through the camera 33 as the codec IC 552. After compression, the data is stored in the address area designated by the first memory unit 553 (S107).

In addition, when the main processor 556 determines that there is a difference in the file amount of the compressed image information by comparing the file amount of the compressed image information currently obtained from the codec IC 552 with the file amount of the compressed image information acquired immediately before, It determines that there is a visitor around the door, activates the recording mode, compresses the image of the visitor input through the camera 33 through the codec IC 552, and stores it in the designated address area of the first memory unit 553. do.

As described above, in the state in which the automatic recording function according to the motion detection is executed in the image input through the camera 33, it is determined whether the absent setting is made according to the resident's outing (S108).

If it is determined in the state that the absence is set in the S108, the main processor 556, the phone number specified through the communication unit 558, for example, the mobile communication terminal of the resident or a service provider or other related organizations in charge of the security function By connecting (S109) to transmit the video of the visitor recorded as a video to the active security function is executed (S110).

When the transmission completion of the recorded visitor is detected (S110), the mobile station enters the standby mode and records a new visitor image according to the motion detection (S112).

If it is determined in S108 that the occupant does not have the absent setting, it is determined whether a playback request of the automatically recorded visitor image is detected (S113). If a playback request is detected, the main processor 556 may determine the first memory unit 553. The visitor's video recorded in the access point is restored by the codec IC 552 and then decoded by the video encoder 555 and reproduced through the display 53 (S114).

In addition to the automatic recording through the above-described motion detection, a desired information service may be provided by accessing a bank, a securities company, an airline, or an internet network through the communication unit 558.

In the above description, only the video recording of the visitor is described according to the detection of the movement. However, when the automatic recording function is activated according to the detection of the motion, it is obvious that the voice recording function is activated at the same time. Since the conventional technology, a detailed description thereof will be omitted.

As described above, the present invention determines that there is a visitor when the motion is detected through the change in luminance level and the comparison of the file size before and after the compressed image in the monitored image around the door, and the recording function is automatically activated by the visitor. By recording and storing the video of the camera, an active security function is provided, and by activating the recording function only when motion is detected, the limited memory space can be efficiently used.

In addition, if property damage occurs due to visitor intrusion, the recorded video shall be submitted as evidence to provide easy arrest of related suspects.

In addition, by transmitting the video of the visitor to the video of the visitor to the mobile communication terminal in the absence of the resident, the visitor can be confirmed even in the absence of the state, thereby enabling the active security function.

In addition, by simply connecting to the existing video phone without a separate line equipment can automatically record the video of the visitor provides convenience for use.

1 is a block diagram of a multi-function video phone device according to the present invention.

2 is a block diagram illustrating an internal configuration of the indoor unit in the multifunction video phone device of FIG. 1;

Figure 3 is a block diagram of the power connection in the case of mounting the module of the multifunction video phone device according to the present invention to the existing device.

4 is an operation flowchart of an embodiment of executing visitor image recording in the multifunction video phone apparatus according to the present invention;

Explanation of symbols on the main parts of the drawings

3: outdoor unit 5: indoor unit 31, 51: handset

33; Camera 35: Call Button 53: Monitor

551: video decoder 552: codec IC 553: first memory section

554: motion detection unit 555: video encoder 556: main processor

557: Second memory unit 558: Communication unit 560: Perennial calendar chip

A, B: Communication Line

Claims (7)

In the video phone device is installed in the outdoor unit installed in the door or the door and the outdoor unit equipped with a camera and a communication line and installed in a predetermined position in the room, A video decoder which acquires an image signal input through a camera provided in the outdoor unit to the indoor unit and extracts the image signal into a luminance signal and a color signal; A codec IC for compressing a video signal of a visitor applied by the video decoder; A first memory unit which stores an image of a visitor compressed by the codec IC in a designated address area; A motion detector for detecting a motion by detecting a change in the luminance level of a specific pixel by checking a luminance signal in an image signal acquired and separated by the video decoder; A main processor for managing general functions related to video recording and playback of a visitor according to motion detection in a video signal and activation of a security function; A second memory unit configured to set an application program for executing general functions of the main processor; Multi-function video phone device further comprises a communication unit for transmitting the status information on the occurrence of intruders in the household by connecting the mobile communication terminal of the various institutions and residents performing the security function through the wired or wireless network. The method of claim 1, The main processor compares the amount of compressed image information files currently acquired to the codec IC with the amount of compressed image information files acquired immediately, and if there is a difference in the amount of compressed image information files, it is determined that there is a visitor near the door. Multi-function video phone device characterized in that to activate the recording and method function. The method of claim 1, And a year-end calendar chip connected to the main processor so that current date and time information can be recognized and displayed. In a video phone installed in the outdoor unit installed in the door or the door and the outdoor unit equipped with a camera and a communication line and installed in a predetermined position in the room, A multi-function video phone apparatus, comprising: connecting a board having the configuration of claim 1 to an indoor unit of an installed video phone to automatically record visitor images through motion detection. The method of claim 4, wherein In case of connecting the board having the configuration of claim 1 to the pre-installed video phone, further comprising a power supply for always supplying power to the camera of the outdoor unit, in order to prevent the reverse current flows into the board of claim 1 A multifunction video phone device comprising a diode. In a video phone installed in the outdoor unit installed in the door or the door and the outdoor unit equipped with a camera and a communication line and installed in a predetermined position in the room, The camera provided with the outdoor unit is always on when the power is supplied to acquire the image around the door; The image obtained through the camera is processed and displayed on the display of the indoor unit, and the luminance signal of the image signal is checked to determine whether a change in luminance level is detected in a specific portion of the pixel, and the amount of compressed image information acquired immediately before the compression is acquired. Comparing the amount of video information; And determining that there is a movement of the visitor when a change in luminance level is detected in the specific partial pixel or a difference in the amount of compressed video information, and compressing and storing the visitor's image obtained by activating an automatic recording function. Visitor video recording method of a multi-function video phone device. The method of claim 6, Transmitting a video of a visitor recorded by automatically connecting a specified telephone number when the absentee mode by the resident is set while the video of the visitor is recorded and stored; And reconstructing the recorded image of the compressed and stored visitor and displaying the compressed image on the display of the indoor unit when the reproduction request of the recorded image is detected.