TWI386874B - Interactive Message System and Method - Google Patents

Description

Interactive message system and method

The present invention relates to an interactive message system and method, and more particularly to a power supply unit, an image recognition setting unit, at least one information input module, a control unit, a memory unit, a touch unit, and an information output unit. You can convert the message of the homeowner into the first message for the visitor to watch or listen to, and convert the visitor's message into a second message for the owner to watch or listen to.

Under normal circumstances, if a homeowner is not present and there is a visitor's visit, assuming that the visitor does not know the homeowner's mobile phone or the homeowner does not have a mobile phone, the visitor can only eat a closed door, even if the visitor The pen paper records the message, so there is still no guarantee that the message left by the visitor will be detected by the owner, which will cause inconvenience and trouble to the homeowner and the visitor.

In order to solve the above-mentioned shortcomings, relevant industry players have developed a national invention patent No. 162947 "door electronic voice message walkie-talkie", which is proposed for the inconvenience and lack of the intercom at the door of indoor and outdoor calls for ordinary households at the present stage. The improvement makes the walkie-talkie easy to operate. When the owner is not present, the guest is visiting. When the bell is ringed, the reception message is output by voice, and the visitor is notified to leave important conversation materials to achieve the function of recording the message. In order to facilitate the return of the homeowner, you can use this message record to easily connect with the tracker.

Although the conventional structure has a voice message function, it has no function settings such as video, handwriting input and far-end communication, so that the message record cannot be completely restored, so that a voice misunderstanding occurs, if the owner is after a long time. It is only after learning that there is a record of urgency and urgency, so it is easy to have incidents, which leads to difficulties and troubles in use.

Another conventional structure, such as the domestic invention patent No. I254551 "electronic message device", includes an information input device, which receives a message input by a user, an information storage device, and stores message information and an information playback device. , playing a message message, a vibration detector, which emits a trigger signal, a controller, an electrical connection information input device, an information storage device, an information playback device, and a vibration detector in response to external vibrations, which should be triggered The message is triggered by the information storage device and played by the information playing device to achieve the effect of active notification.

Although the conventional structure has functions such as shadow, sound and handwriting input, it can obtain a more complete and complete message record. However, it has no image recognition setting mechanism and cannot automatically identify whether there is anyone in the house. If the owner goes out and forgets When setting up an electronic message device, the visitor will not be able to leave any message to the homeowner. This will cause inconvenience and confusion for the visitor and the owner. In addition, the customary structure does not have the remote messaging function. When returning to the residence after a long time, when the message record left by the visitor is a time-sensitive message, there will be an important delay in the event, which will cause inconvenience and trouble to the owner. The structure does have the need for further improvement.

Another conventional structure, such as the national invention patent No. M260964 "interactive message device", can be set at the gate or the door to provide recording and playback of dynamic audio and video messages, which is provided with a control unit on a body to handle Control the recording and playback of video and voice as the processing and control center of the signal; the main body is provided with several recording play keys to provide different message content, and corresponding lights are provided for reminding the message content; the control unit And a timer is connected to control to start at a specific time to play a specific message content; the sensing component is disposed on the body to transmit the sensing signal to the control unit, thereby driving the specific message content to be played; and the camera device can be driven by the camera device Monitor by record. In this way, in order to achieve the effect of reminding and sharing care, it can be used as a medium for communication and interaction among members of the family.

Although the conventional structure has a message recording mechanism for video and audio input, it has no image recognition setting mechanism and cannot automatically identify whether there is anyone in the house. If the owner forgets to set up the electronic message device, the visitor will not be able to stay. Any message to the homeowner will cause inconvenience and distress to the visitor and the homeowner. Moreover, the structure of the fare has no remote messaging function. If the owner returns to the accommodation after a long period of time, the visitor When the left message record is a time-critical message, there will be an important delay in the event, which will cause inconvenience and trouble to the owner. Therefore, the structure of the application is indeed necessary for further improvement.

The first object of the present invention is to provide an interactive message system and method with two-way interactive video, audio and handwritten input message information, etc., which can not only display or output the message sent by the owner to the visitor, but also The message left by the visitor is recorded, so that the homeowner and the visitor can leave a message through two-way interaction. In addition, the automatic identification function of the person in the house can be used to automatically set the message system according to the actual situation in the house. Therefore, it is possible to avoid the inconvenience caused by the owner of the home to forget to set up the message system. Therefore, it has many features such as better operation convenience, more complete retention of message record information, and less important omission of visitors.

In order to achieve the above-mentioned effects, the technical means adopted by the present invention includes a power supply unit, an image recognition setting unit, at least one information input module, a memory unit, at least one touch unit, a control unit and an information output unit. And the image recognition setting unit monitors the status of the people in the house. When someone in the house automatically turns off the message system, when there is no one in the house, the message system is automatically activated, and the information input module is used to input a message to generate a sound and image. The message signal of the text or the pattern, and the control unit can be triggered by the touch signal of the touch unit to process the message signal and store it in the memory unit, or read the message signal from the memory unit, output the information signal, and output the information. The unit converts the message of the homeowner into the first message for the visitor to listen to or listen to, and converts the message signal of the guest's message into a second message for the owner to watch or listen to.

A second object of the present invention is to provide an interactive message system with remote message messaging, so that the owner can immediately grasp the urgency of the visitor's message record or the fire alarm information, without missing important items or Let the situation of the disaster expand.

In order to achieve the above-mentioned effects, the technical means adopted by the present invention further includes an information transmission module for transmitting the second message signal to a remotely located information receiving device.

壹. The overall technical features of the present invention

Please refer to the first to fourth figures. The present invention is mainly applied to the field of access control management, and has the functions of two-way interactive video, audio and handwritten input message information, and has the function of automatically identifying people in the house. According to the actual situation in the house, the message system is automatically set, so that the inconvenience caused by the owner to forget to set the message system is avoided. To achieve the above effects, the overall technical feature of the present invention includes a power supply unit (24), An image recognition setting unit (20), at least one information input module (30), a memory (41), at least one touch unit (50), a control unit (40) and an information output unit (60), The message system can be automatically set according to the actual situation in the house, so as to avoid the inconvenience caused by the owner going out and forgetting to set the message system.

Please refer to the fourth and seventh figures. The present invention uses the power supply unit (24) to supply the power required by the message system, and monitors the state of the person in the room by the image recognition setting unit (20). The message system is automatically turned off; otherwise, the message system is automatically activated.

Please refer to the first to seventh figures. The present invention uses the information input module (30) for the user to input a message signal including sound, image, text or pattern, when the owner or the visitor touches or senses the touch unit. (50), a touch signal is generated in the control unit (40), so that the control unit (40) is triggered by the touch signal to process the message signal and stored in the memory (41), or by the memory. (41) After reading the message signal and outputting, the information output unit (60) converts the message signal of the message posted by the owner into the first message information for the visitor to watch or listen, and converts the message signal of the guest's message into A second message for the owner to watch or listen to.

two. Technical features of the present invention 2.1 Information Input Module

Please refer to the first and second figures. The information input module (30) of the present invention is mainly for the visitor to record message messages by means of images, sounds, characters or patterns, and the specific embodiment of the information input module (30) It may be a photographing device (30a), a recording device (30b), a handwriting input device (30c) touch panel (30d), or a manipulation button (30e).

2.2 Control unit

Referring to the fourth to seventh embodiments, the control unit (40) is the core of the arithmetic processing and the actuation control of the present invention, and includes a signal processing circuit (42) for performing signal conversion and amplification processing on the message signal. a microprocessor (43), the microprocessor (43) can be triggered by the touch signal of the touch unit (50), and the control signal processing circuit (42) can perform signal conversion and amplification processing on the message signal, and can be stored in the memory ( 41), or in the memory (41), the message signal is read and outputted to the information output unit (60) for display or output.

Referring to FIG. 8 , the microprocessor (43) has a control program built therein. After the control program is started, it is first determined whether the visitor generates a touch signal. If yes, the message signal left by the home owner is read, and then The message signal is converted into the first message for the visitor to watch or listen to.

Please refer to the figure IX. When the visitor wants to record the message, it is judged whether the trigger signal is generated. Yes, it is judged whether to enter the voice message menu, yes, the guest message is recorded; if not, it is judged whether to enter the video message menu, if yes, then Record the guest message; otherwise, enter the handwritten input message menu and record the guest message.

2.3 touch unit First embodiment

Referring to the fourth figure, the touch unit (50) of the present invention mainly causes a visitor to generate a touch signal by sensing or pressing contact to trigger the operation of the control unit (40). In this embodiment, the touch unit is (50) It can be an infrared sensor, a vibration sensor or a push button switch.

Second embodiment

Referring to the fifth and sixth figures, the touch unit (50) of the present invention mainly enables a visitor to generate a touch signal by sensing to trigger the operation of the control unit (40), and to filter the visitor identity to avoid being subjected to non- In the present embodiment, the touch unit (50) is a radio frequency identification module RFID (50a) electrically connected to the information input module (30) for identifying the identity of the visitor. When the identity is correct, the information input module (30) is activated for the guest to input the message.

2.4 Image Recognition Setting Unit

Please refer to the fourth and seventh figures. The image recognition setting unit (20) of the present invention mainly uses the image capture in the room to identify the state of the person in the room, so as to automatically set the message system, which includes at least one set of installation. a digital photographic device (21), a computer (22) and a driving interface device (23) for capturing indoor images, the computer (22) is electrically connected to the digital photographic device (21), and comprises an inner The image recognition software built in the computer (22) and an image database for storing a reference image, the image recognition software is used for distinguishing the reference image from the instantly captured image, and the image comparison result is obtained. When the predetermined gap is not reached, a setting signal is generated to the driving interface device (23), so that the computer (22) is in the message setting state of the second message signal input by the visitor, and then the driving interface device is used. (23) to activate the message system of the present invention.

In the above specific embodiment, the image recognition software further includes a fire alarm identification mode. When the computer (22) is in the message setting state, the fire alarm identification mode is automatically activated to perform differential comparison identification on the indoor, when the image comparison result is reached. In the case of a predetermined gap, it is determined that there is a fire or burglary in the room, and an alarm signal is immediately generated, and the alarm signal or the second message information is transmitted to the information through an information transmission module (70). A remote information receiving device (80).

2.5 information output unit First embodiment

Referring to FIG. 5, in the embodiment, the first message information and the second message information are outputted in a display manner. The first embodiment of the information output unit (60) is an LCD display device (61). There is a display driving circuit (610) built therein, which can convert the message signal into the first message information and the second message information for display.

Second embodiment

Referring to FIG. 6 , in the embodiment, the first message information and the second message information are outputted in an audio manner, and the second embodiment of the information output unit (60) is an audio playback device (62). The utility model comprises a digital/analog conversion circuit (620) for converting a voice message signal of the memory (41) into an analog signal, an audio amplification circuit (621) for amplifying the message signal, and an audio signal for the message signal. The mode outputs a speaker (622) of the first message information and the second message information.

2.6 Information Transmission Module

Please refer to the first to fourth figures. In order to transmit the message information to the remote owner, the present invention further includes an information transmission module (70) for transmitting the second message information to the remote location. In the information receiving device (80).

First embodiment

Referring to FIG. 5, in the embodiment, the information transmission module (70) includes a signal converter (71) and a wireless communication device (72). The signal converter (71) converts the second message signal into The signal is compatible with a mobile communication network protocol format, and the wireless communication device (72) transmits the message or the voice message to the information receiving device (80) through the mobile communication network (81) by means of a short message or a voice message. The specific embodiment of the information receiving device (80) may be a mobile phone, and the specific embodiment of the mobile communication network (81) may be a mobile communication network (81) of the GSM or PHS protocol.

Second embodiment

Referring to FIG. 6, in the embodiment, the information transmission module (70) includes a network server (73) and a network server (83) connected to the network server (73). The computer (74) or the PDA, the computer (74) or the PDA can communicate with the control unit (40) via a signal transmission interface (75) to transmit the second message information to the network server (73) for information reception. The module (80) is another computer connected to the network server (73) network.

2.7 casing is fixed by the original door glasses

Please refer to the third figure, which is a power supply unit (24), an image recognition setting unit (20), an information input module (30), a control unit (40), a touch unit (50), and an information output unit (60). For the purpose of housing or setting, the present invention further comprises a casing (90). Furthermore, the present invention simply and effectively fixes the casing (90) on the door panel (1), and can directly utilize the original door-eye structure on the door panel (1) to avoid damage by separately piercing the door panel (1). The structural strength and overall aesthetics of the door panel (1), a preferred embodiment of the door panel (90) is connected to the rear of the casing (90) by a joint means and the door aperture (10) of the door panel (1). The first tube member (11) and the second tube member (12) conform to the specifications of the door glasses group, so that the casing (90) can be fixed on the door panel (1). The first tube member (11) has a first end and a second end, and the first end is fixed to the perforation (91) by a bonding means, and the first tube (11) has a first end and a second end. The first tubular member (11) has a thread opposite to a second end of the first end, and the second tubular member (12) has a first end and a second end, the first end of which has a first tubular member ( 11) the second end of the thread The mating screw has a second card edge (120) with an outer diameter enlarged on the outer peripheral surface of the second end, and the second end of the first pipe member (11) is from the outside of the door plate (1) through the door eye hole ( 10) penetrating inwardly, and inserting the first end of the second pipe member (12) from the inner surface of the door panel (1) outwardly from the door eyelet (10), and then the second end of the first pipe member (11) The thread is screwed with the first end of the second pipe member (12), and the second card edge (120) of the second end of the second pipe member (12) is clamped to the door plate (1) by the casing (90), thereby making the machine The casing (90) is fixed to the door panel (1). Thereby, not only the invention can be directly fixed to the door panel (1) by using the door eyelet (10) on the door panel (1), so as to avoid damage to the door panel (1), and the relevant inside the casing (90). The wire set can also be penetrated into the room through the internal passages of the first pipe member (11) and the second pipe member (12) to facilitate various installations. Wherein, in a specific embodiment of the above bonding method, a nut (13) is fixed to the through hole (91), the nut (13) is screwed to a ring body (14), and one end of the ring body (14) is provided to the center. a protruding ring wall (140), and the center of the ring wall has a through hole (141), and the first end of the first pipe member (11) is provided with a first card edge (110) that engages with the ring wall (140), Passing the second end of the first pipe member (11) through the through hole (141) of the ring wall (140) of the ring body (14), so that the first card edge (110) and the ring wall (140) are locked, and then The ring body (14) is screwed with the nut (13) to connect the first pipe member (11) to the casing (90).

Wu. The specific operation of the invention

Please refer to the first to fourth, when the homeowner goes out, the information can be recorded in the memory (41) through the information input module (30). On the other hand, the digital camera (21) of the image recognition setting unit (20) starts to capture the indoor image, and the image recognition software built in the computer (22) will be captured with the set reference image and the instant image. The indoor image is subjected to differential comparison identification. When the image comparison result does not reach a predetermined range, the indoor representation is unmanned, and the computer (22) then generates a setting signal to the driving interface device (23), so that the invention can be made. The message system is in the set standby state.

Please refer to the fourth and eighth figures. When the visitor visits, the touch unit (50) generates a touch signal by touch or induction. When the control unit (40) receives the touch signal, it starts to read the memory. In the body (41), the message signal left by the homeowner, and then the information output unit (60) converts the message signal into the first message information for the visitor to watch or listen to (such as: going out shopping or going out and returning later) If there is an emergency, please dial... mobile phone...etc.).

Please refer to the fourth and ninth diagrams. If the visitor has important information to leave a message, simply touch or touch the touch unit (50) to enable the information output unit (60) to generate an operation interface for inputting a message. The operation interface displays a menu of voice messages, audio and video messages, handwritten input messages, and touch buttons for the visitor to select and set the desired message signal. Then, the signal processing circuit (42) of the control unit (40) processes the message signal and records it in the memory (41). When the homeowner returns to his/her home, the second message of the visitor can be obtained from the information output unit (60), so that the homeowner and the visitor can leave a message through two-way interaction.

Oh, conclusion

Therefore, by the above construction, the present invention can be summarized as follows:

1. The invention has the functions of two-way interactive video, sound and handwriting input message information, and can not only display or output the message of the homeowner to the visitor, but also record the message left by the visitor. Messages can be posted between the homeowner and the visitor through two-way interaction.

2. The invention has the function of automatically recognizing the person in the house, and can automatically set the message system according to the actual situation in the house, so that the inconvenience caused by the owner to forget to set the message system can be avoided, and thus the operation convenience is better. The information of the message record is kept relatively complete and the important matters of the visitor are not easy to be missed.

3. The invention has the function of remote message communication, so that the owner can immediately grasp the urgency of the visitor's message record or fire alarm information, and not to miss important matters or to expand the disaster.

The above is only one of the possible embodiments of the present invention, and is not intended to limit the scope of the patents of the present invention, and the equivalents of other variations of the contents, the features and the spirit of the following claims. All should be included in the scope of the patent of the present invention. The invention is specifically defined in the structural features of the scope of the patent application, is not found in the same kind of articles, and has practicality and progress, has met the requirements of the invention patents, and has applied for the law according to law, and invites the bureau to approve the patents according to law to maintain The legal rights of the applicant.

(1). . . Door panel

(10). . . Door eyelet

(11). . . First pipe fitting

(110) (120). . . Card edge

(12). . . Second pipe fitting

(13). . . Nut

(14). . . Ring body

(140). . . Ring wall

(141). . . Through hole

(20). . . Image recognition setting unit

(twenty one). . . Digital camera

(22)(74). . . computer

(twenty three). . . Drive interface device

(twenty four). . . Power supply unit

(30). . . Information input module

(30a). . . Photography device

(30b). . . Recording device

(30c). . . Handwriting input device

(30d). . . Touch panel

(30e). . . Control button

(40). . . control unit

(41). . . Memory

(42). . . Signal processing circuit

(43). . . microprocessor

(50). . . Touch unit

(50a). . . Radio Frequency Identification Module RFID

(60). . . Information output unit

(61). . . LCD display device

(610). . . Display driver circuit

(62). . . Audio player

(620). . . Digital/analog conversion circuit

(621). . . Audio amplifier circuit

(622). . . speaker

(70). . . Information transmission module

(71). . . Signal converter

(72). . . Wireless communication device

(73). . . Web server

(75). . . Signal transmission interface

(80). . . Information receiving device

(81). . . Mobile communication network

(82). . . Internet

(90). . . cabinet

(91). . . Through hole

(92). . . Cover

(93). . . Opening

The first figure is a schematic view of the appearance of the basic structure of the present invention.

The second figure is a schematic diagram of the implementation of the invention installed on the door panel.

The third figure is a schematic cross-sectional view of the combination of the present invention and the door glasses.

The fourth figure is a schematic diagram of the basic circuit control block of the present invention.

The fifth figure is a schematic diagram of a control block of a specific implementation circuit of the present invention.

Figure 6 is a block diagram showing the control block of another embodiment of the present invention.

The seventh figure is a block diagram showing the implementation of the image recognition setting unit of the present invention.

The eighth figure is a schematic diagram of the flow control of the message display of the owner of the present invention.

The ninth figure is a schematic diagram of the flow control of the recorded message of the present invention.

(24)‧‧‧Power supply unit

(20)‧‧‧Image recognition setting unit

(21)‧‧‧Digital photography equipment

(30)‧‧‧Information input module

(30a)‧‧‧Photographing device

(30b)‧‧‧recording device

(30c)‧‧‧Handwriting input device

(30d)‧‧‧Touch Panel

(30e)‧‧‧Control buttons

(50)‧‧‧Touch unit

(50a) ‧ ‧ Radio Frequency Identification Module RFID

(60) ‧‧‧Information output unit

(61)‧‧‧LCD display device

(622)‧‧‧ Speakers

(70)‧‧‧Information Transmission Module

(75)‧‧‧Signal transmission interface

(90) ‧‧‧Chassis

Claims (17)

An interactive message system includes: a power supply unit for supplying power required by the message system; an image recognition setting unit for monitoring the status of the person in the house, and automatically closing the message when someone in the room The system automatically activates the message system when there is no one in the house; and two information input modules, each of the information input modules can input a message to generate a voice signal, a video, a text or a graphic message signal, and the information input mode The group is for the owner to input a message, and the other information input module is for the guest to input the message; a memory unit; a control unit for processing the message signal and storing it in the memory unit, or by the memory unit Reading the message signal and outputting it; and an information output unit for converting the message message posted by the owner to the first message information for the visitor to watch or listen to, and converting the message signal of the visitor into a home delivery message The second message to watch or listen to. The interactive message system of claim 1, wherein the information input module is selected from the group consisting of a digital camera device, a recording device, a handwriting input device, a touch panel, and a manipulation button. The interactive message system of claim 1, wherein the control unit comprises: a signal processing circuit; and a microprocessor that controls the signal processing circuit to process the message signal and the message signal It is stored in the memory, or the message signal is read from the memory and output to the information output unit for display or output. The interactive message system of claim 1, further comprising a trigger unit for generating a touch signal to activate and disable the operation of the control unit. The interactive message system of claim 4, wherein the touch unit is selected from the group consisting of an infrared sensor, a vibration sensor, and a push button switch. The interactive message system of claim 4, wherein the touch unit is a radio frequency identification module (RFID), which is electrically connected to the control unit for identifying a visitor identity, and when the identity is correct, The information input module is activated for the guest to input a message, and the second message signal can be generated. The interactive message system of claim 1, wherein the image recognition setting unit comprises: at least one digital camera device installed in the room for capturing images in the room; and a computer, respectively The digital camera device is electrically connected, and includes an image recognition software built in the computer, and an image database for storing a reference image for performing the reference image and the captured image. The difference is identified. When the image comparison result does not reach a predetermined range, it is determined that there is no person in the room and a setting signal is generated, so that the computer is in the message setting state of the second message signal that can be input by the visitor. And a driving interface device, which uses the setting signal to start the power supply of the power supply unit. The interactive message system of claim 7, wherein the image recognition software further comprises a fire alarm identification mode, and when the computer is in the message setting state, the fire alarm identification mode is automatically activated to the indoor Performing a differential comparison identification, when the image comparison result reaches a predetermined range, it is determined that a fire or a theft is caused in the room, and an alarm signal is immediately generated and transmitted through an information transmission module. The alarm signal or the second message information is transmitted to an information receiving device located at the far end. The interactive message system of claim 1, further comprising an information transmission module for transmitting the second message information to an information receiving device located at a remote location. The interactive message system of claim 8 or 9, wherein the information transmission module comprises a signal converter and a wireless communication device, and the signal converter converts the second message signal into a mobile communication network The communication protocol format is compatible with the signal, and the wireless communication device transmits the message or the voice message to the information receiving device through the mobile communication network by means of a short message or a voice message. The interactive message system of claim 8 or 9, wherein the information receiving device is a mobile phone. The interactive message system of claim 8 or 9, wherein the information transmission module comprises a network server and a computer or PDA connected to the network server via an internet. Or the PDA can communicate with the control unit signal through a signal transmission interface to transmit the second message information to the network server, where the information receiving module is connected to the network server network. One computer or another PDA. The interactive message system of claim 1, wherein the information output unit is an LCD display device having a display driving circuit for converting the message signal into the first displayable Message information and the second message. The interactive message system of claim 1, wherein the information output unit is an audio playback device, and includes a digital/analog conversion circuit for converting the voice message signal of the memory into an analog signal, An audio amplifying circuit that amplifies the message signal and a speaker that outputs the message signal as the first message information and the second message information in an audio manner. The interactive message system of claim 1, further comprising a power supply unit, the image recognition setting unit, the information input module, the control unit, the memory unit, and the information output unit a casing, the back of the casing is provided with a perforation, a first end of the first pipe member is fixed to the perforation by a joint means, and the first pipe member has a thread on a second end opposite to the first end, and a second tubular member having a first end and a second end, the first end of the second tubular member having a thread corresponding to the thread of the second end of the first tubular member, and the second end outer peripheral surface a second card edge having an enlarged outer diameter is disposed, so that the first pipe member and the second pipe member can be threaded through the eyelet of the door panel and screwed to each other, and the second card edge of the second pipe member is coupled to the machine. The shell is clamped to the door panel to fix it. The interactive message system of claim 15 , wherein the bonding means fixes a nut to the through hole, the nut is screwed to the ring body, and one end of the ring body is provided with a ring wall protruding toward the center, and The first end of the first tubular member is provided with a first hole, and the first end of the first tubular member is connected to the through hole of the ring body. Traversing, the first card edge is engaged with the ring wall, and the ring body is screwed with the nut, thereby connecting the first pipe member to the casing. An interactive message method includes: preparing a power supply unit, an image recognition setting unit, two information input modules, a memory unit, a control unit, and an information output unit; and supplying the required power source by the power supply unit The image recognition setting unit monitors the status of the person in the house, and when there is someone in the house, the message system is automatically turned off, and when there is no one in the house, the message system is automatically activated; the information input module is used to input a message, and when the message is input, a message signal of sound, image, text or pattern is generated; the message unit is processed by the control unit and stored in the memory unit, and controlled by the memory unit to read the message signal and output; The message output unit converts the message signal of the home message to a first message for the visitor to watch or listen to, and converts the message signal of the visitor into a second message for the owner to watch or listen to.