JP2006032998A - Radio doorphone system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio doorphone system which can be easily installed, is improved in user-friendliness, and is further improved in practical use by wirelessly connecting a doorphone with an in-house speech communication device and making the in-house communication device portable. <P>SOLUTION: The connectability between the doorphone and the speech communication device is improved using a digital radio communication system. A large capacity storage such as a harddisk is provided on the master set of the speech communication device to enable recording video images or audios. In addition, image analysis is performed to analyze the video information of a visitor. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wireless doorphone system, and more specifically, a doorphone installed at a front door of a general house and used by a visitor is wirelessly connected to a telephone device used by a resident placed in a house to improve convenience. The present invention relates to a wireless door phone system.

  A door phone system installed at the entrance of a house where a visitor and a resident can talk with each other has recently become popular with a camera. Further, as disclosed in Patent Document 1, a visitor captured by a camera is used. In some cases, the person's face information is collated with information registered in advance and linked to the electronic lock system.

  However, the door phone is made wireless to improve installation ease, door phone theft prevention is taken into account, visitors (including suspicious persons) information can be managed and reported, and face information is only verified. There are currently no improvements in practical use, such as those that have improved anxiety about locking and those that have been devised to make camera images clearer.

JP 2003-18587 A

  For example, communication between a door phone installed at the front door and a telephone device placed in the house is a device-specific interface method and is wired, so it is not considered in advance when building a house. There is a problem that the wiring is exposed and the appearance is bad. In addition, such an installation method often becomes unusable after moving.

  In addition, since the telephone equipment placed in the house is fixed on the wall of the living room, etc., if there is a visitor, the resident needs to go to the telephone equipment to respond, for example while visiting the bath If there is a person, you will not be able to respond and will be away.

  In addition, the conventional door phone system cannot grasp the behavior of the suspicious person at the front door.

  The present invention has been made in view of the above points, and by making a wireless connection between a door phone and a telephone device in the house and making the telephone device in the house portable, the installation is facilitated. An object of the present invention is to provide a wireless door phone system with improved usability and further practical improvements.

  In order to achieve the above object, the present invention connects a door phone and a telephone device by a high-speed digital wireless system as used in a personal computer LAN.

  In addition, the present invention makes it easy to carry a telephone device like a mobile phone so that a person can talk to a visitor anywhere in the house (for example, a bath, a washroom, a garden, a bedroom, a kitchen, etc.). ing.

  Further, according to the present invention, information on visitors visiting while the resident is away and suspicious behavior at the entrance can be heard from the outside by telephone or viewed on the Internet.

  Further, according to the present invention, when unlocking the entrance, both the resident's fingerprint and face image can be checked, thereby improving the certainty.

  Further, the present invention can generate a large alarm sound when a door phone installed at the front door is stolen (when removed from the attachment position), thereby contributing to crime prevention.

  According to the present invention, it is possible to prevent a person from staying away from being unaware of the ping-pong sound that is a doorphone ringing sound while a person is in the house.

  Further, according to the present invention, since all the videos of the suspicious behavior reflected on the camera and the call between the resident and the visitor are recorded, it is possible to contribute to crime prevention.

  In addition, according to the present invention, since a widely used digital wireless communication method is adopted as a communication method between the door phone and the telephone device, there can be a product form of the door phone alone or the telephone device alone. It can also be used when you move.

  Further, according to the present invention, if a large-capacity battery is mounted on the door phone, no wiring is required and the ease of installation increases.

  In addition, according to the present invention, it is possible to take measures such as recording a criminal image and sounding an alarm sound even for theft that is likely to occur because no wiring is required for the door phone. Can contribute to crime countermeasures, such as cooperation in the investigation.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the telephone system according to the present invention includes a handset 1 carried by a resident in the house, a base unit 2 installed at a predetermined location, and a door phone 3 installed at the front door of the house. The slave unit 1 and the master unit 2 communicate with each other through the antennas 100 and 200, and the master unit 2 and the door phone 3 communicate with each other through the antennas 200 and 300, respectively, and exchange information and control devices. I do. In the present embodiment, the telephone device in the house is composed of the slave unit 1 and the master unit 2.

  FIG. 2 is a block diagram showing the configuration of the door phone 3.

  The wireless communication unit 31 includes a signal multiplexing function such as CDMA and TDMA, a modem that executes a wireless communication method, and a high-frequency wireless circuit, and transmits or receives wireless radio waves via the antenna 300. In the present embodiment, the wireless communication unit 31 is separate from the antenna 300, but the wireless communication unit 31 may include the antenna 300.

  As a wireless communication method of the door phone system in the present invention, the IEEE802.11b method is a method sufficient in communication speed, radio wave output, and security, but any method may be used as long as it is a digital wireless communication method, and a PHS method may be used.

  The communication control unit (CCU) 32 uses the door phone 3 such as a video signal and an audio signal from the camera 38 and the microphone 40 of the door phone 3, an audio signal from the handset 1, an audio signal of a telephone conversation, and date / time information. This is a circuit for assembling or disassembling signals in accordance with a separately defined communication protocol method for management information and other maintenance information associated with a call or telephone conversation.

  The analog-digital conversion circuit (ADC) 35 includes a video encoder (VENCODE) 35a, and performs analog-digital conversion of the video signal and analog-digital conversion of the audio signal and inverse conversion thereof. The analog / digital conversion circuit (ADC) 35 also performs digital conversion of an analog output signal from the object sensor 39.

  The camera unit 38 includes a two-dimensional image sensor (CCD) 38b, and a motor 38a that executes a zoom mechanism so that the subject appears as centrally as possible in the CCD 38b and the subject appears as large as possible when photographing with the CCD 38b. Have

  The door phone 3 has a microphone 40 and a speaker 41 for a visitor to talk to a resident, and in addition, an object using an infrared sensor or the like for detecting the presence of a visitor, that is, a visitor or a suspicious person in advance. When the sensor 39, the lamp 37 used for the case where the subject is not photographed due to insufficient light intensity with only the illumination lamp provided to the front door to illuminate the front door, when the door phone 3 is removed from the installation state at the front door, For example, it has an abnormal alarm sound generating unit 42 that generates a loud sound such as “thief, thief,”, and further includes a battery 34 as a power source and a charging circuit 33 for charging the battery 34.

  FIG. 3 is a block diagram showing the configuration of the handset 1 among the telephone devices provided in the house.

  The wireless communication unit 11 includes a signal multiplexing function such as CDMA and TDMA, a modem that executes a wireless communication method, and a high-frequency wireless circuit, and transmits or receives wireless radio waves via the antenna 100. In this embodiment, the wireless communication unit 11 is separate from the antenna 100, but the wireless communication unit 11 may include the antenna 100. The CCU 12 is the same as the CCU 32 of the door phone 3. The function of the AD / DA 13 performs analog-digital conversion / inverse conversion of the audio signal.

  The handset 1 is provided with a display 18 and an operation button unit 17, and the display 18 and the operation button unit 17 are similar to the shape of today's mobile phone. For example, the display 18 has a two-dimensional display. The operation button unit 17 is a numeric keypad for inputting a telephone number and characters, four scroll buttons for selecting a menu, up / down / left / right buttons, a decision button, a call start button, It consists of a call end button and several other auxiliary buttons.

  The operation button unit 17 and the display 18 are connected to the user interface circuit 16. The user interface circuit 16 includes a video decoder (VDECODE) 16 a and displays a video signal of the camera 38 obtained from the CCU 12 on the display 18.

  Although not shown in figure, the subunit | mobile_unit 1 is set | placed on the receiving stand which supplies a power supply like the subunit | mobile_unit of a common telephone, or a mobile telephone, and the subunit | mobile_unit 1 is set | placed on this receiving stand. At that time, the charging circuit (not shown) of the handset 1 is operating.

  Further, instead of preparing a dedicated cradle for the slave unit 1, the cradle unit 2 may be provided with this cradle function. However, since the master unit 2 does not have an operation unit and is often installed in one corner of the room, it is practical even if the master unit 2 has a power receiving function for supplying power to the slave unit 1. Because of inconvenience, it would be better to place a stand for handset 1 only.

  In reality, these are cases where the base unit 2 is provided with a base for the handset 1 and a base for exclusive use of the handset 1 is not prepared, and the base unit 2 is not provided with a base. A case in which a dedicated pedestal is prepared, a case in which a pedestal is provided in the parent device 2 and a pedestal dedicated to the child device 1 is also provided, and a plurality of child devices 1 are prepared.

  FIG. 4 is a block diagram showing a configuration of base unit 2 among telephone devices provided in the house.

  If it is only a call with a visitor on the door phone 3 side, a call can be made by wireless communication between the door phone 3 in FIG. 2 and the handset 1 in FIG. 3, and the presence of the base unit 2 in FIG. However, it is more convenient to use a telephone device that connects to a general telephone line in addition to a door phone telephone device in order to manage various information such as visitor history management. However, the presence of the base unit 2 is necessary. Therefore, the wireless door phone system of the present embodiment will be described including the presence of the master unit 2.

  In FIG. 4, a telephone network control circuit (NCU) 21 controls outgoing / incoming calls with a telephone office. The AD / DA (Analog / Digital Converter) 22 converts a telephone voice from analog to digital, generates an analog dial tone from a telephone number (digital information) when a call is made, and converts an analog dial tone to a telephone number (when a call is received). To digital information).

  The wireless communication unit 24 includes a signal multiplexing function such as CDMA and TDMA, a modem that executes a wireless communication method, and a high-frequency wireless circuit, and transmits or receives wireless radio waves via the antenna 200. In this embodiment, the wireless communication unit 24 is separate from the antenna 200, but the wireless communication unit 24 may include the antenna 200. The CCU 23 has the same functions as those of the door phone 3 of FIG. 2 and the slave unit 1 of FIG. 3, but functions 23a and 23b described later are also provided as necessary.

  The HD 27 is a hard disk serving as a non-volatile storage device that records telephone call information and information (video and audio) of telephone door calls. In addition to call information, the HD 27 records and stores communication history, address book data, and voice information equivalent to an answering machine.

  The CODEC 25 performs compression encoding (decoding at the time of reproduction) of audio information and video information in order to record call information on the HD 27. When the storage capacity of the HD 27 is 40 gigabytes, if the data compression rate of audio data by the CODEC 25 is about 1/8, if it is limited to audio data, it can be accumulated for 10,000 hours.

  Information recorded on the HD 27 can be erased in a maintenance mode described later. In addition, since the base unit 2 includes the LAN interface circuit 28, information recorded on the HD 27 can be transferred to an external personal computer or the like connected to the LAN, or externally via the wireless communication unit 24. Can also be transferred to.

  In addition, the base unit 2 is provided with an image analysis circuit 26 that works in conjunction with the HD 27. The image analysis circuit 26 has a function of identifying what the subject is from the video imaged by the door phone 3. Recognize whether the subject is a person, whether it is a man or a woman, what clothes were worn (such as suits or work clothes), whether glasses were worn, etc. The person's person is identified from the video reflected on the camera.

  Therefore, this image analysis circuit 26 said, “From X hours and Y minutes, a woman with glasses came and pressed ping-pong three times and waited for 30 seconds.” Mr. Z came at H, M, and returned 10 seconds without pressing the ping-pong, or "A bird flew in front of the camera at A, B." Output to HD27. This report information can be checked using a maintenance mode to be described later, or the report can be heard by calling the master unit 2 of the present embodiment from the outside, and the report can be heard together with photos and videos. If you set it up to be uploaded to the homepage or reported via email, you can also view it on a computer on the go.

  There are two methods for uploading to the home page and sending e-mails via a LAN interface circuit 38 to a personal computer connected to the parent device 2 via the LAN, and a method for sending information directly from the parent device 2 to the server. In order to perform directly from the parent device 2, it is necessary to add an execution module 23b of the TCP / IP protocol or HTTP protocol to the CCU 23.

  In addition, in order to be able to listen to a report by telephone from outside, the CCU 23 needs a voice synthesis circuit 23a that converts digital information in the HD 27 into voice.

  When the visitor touches the doorphone 3, the touch sensor 36 detects it, the doorphone 3 knows that there is a visitor, and the sound is sent from the speaker 41 from the CCU 32 where the “ping-pong” sound is stored via the ADC 35. Be emitted. At the same time, information that there is a visitor is transmitted to the wireless communication unit 24 and the CCU 23 of the parent device 2 via the CCU 32 and the wireless communication unit 31, and the parent device 2 knows that there is a visitor. In addition, you may use the push button conventionally used without using a touch sensor.

  In order for the master unit 2 to inform the slave unit 1 of the fact, the video information obtained by the camera 38 is obtained from the CCD 38b of the door phone 3 → ADC 35 → CCU 32 → wireless communication unit 31 → wireless communication unit 24 of the master unit 2 → CCU 23 → wireless communication. Unit 24 → wireless communication unit 11 of handset 1 → CCU 12 → user interface circuit 16 → display on display 18 of handset 1 by the route of display 18 (see FIG. 5A, see FIG. 5A) FIG. 5B and FIG. 5B are diagrams showing examples of contents displayed on the display 18.

  The voice information is transmitted from the handset 1 to the door phone 3 by the microphone 14 → AD / DA 13 → CCU 12 → the wireless communication unit 11 → the wireless communication unit 24 of the base unit 2 → the CCU 23 → the wireless communication unit 24 → the wireless communication unit 31 of the door phone 3. → CCU 32 → ADC 35 → Information flows through the route of the speaker 41, and the microphone 40 → ADC 35 → CCU 32 → the wireless communication unit 31 → the wireless communication unit 24 of the parent device 2 → CCU 23 → the wireless communication unit 24 from the door phone 3 to the child device 1. → Information flows through the route of the wireless communication unit 11 of the slave unit 1 → CCU 12 → AD / DA 13 → speaker 15.

  In addition, the direct communication between the handset 1 and the door phone 3 is not performed on the route through which the information flows, but the relay of the base unit 2 allows the communication history and the entire call contents to be recorded in the HD 27 of the base unit 2. It is to keep.

  By the way, when a visitor touches the door phone 3 and the touch sensor 36 detects it, and the resident is on the phone with the handset 1, the CCU 23 or the HD 27 of the base unit 2 is operated by a button operation of the handset 1. It is possible to send a stored message such as “I'm on the phone now. Please wait” to the speaker 41 of the door phone 3 and output it, or set it using the maintenance mode.

  Regardless of whether or not the handset 1 is on the phone, of course, if no operation is performed on the handset 1, unwanted visitors can be ignored. It would be a commonly used method to see and ignore the video in the handset 1.

  When it is difficult to see the image of the customer reflected in the slave unit 1, the CCD 38b can be moved by the motor 38a to make it easier to see by pressing the “angle” button or the “zoom” button (see FIG. 5A).

  A call with a visitor starts by pressing a “start” button (see FIG. 5A). The object sensor 39 of the doorphone 3 can detect a human-like movement near the doorphone 3 even if someone does not touch the doorphone 3. When the ADC 35 detects that there is a human shadow or object shadow based on the sensor information from the object sensor 39, the information is sent to the CCU 32 to drive the camera 38, and the output of the CCD 38b is CCD 38b → ADC 35 → CCU 32 → wireless. The information route from the communication unit 31 to the wireless communication unit 24 of the parent device 2 to the CCU 23 is followed to start recording on the HD 27. At this time, “with shadow” is also displayed on the display 18 of the child device 1 (not shown). Normally, since the visitor touches the door phone 3, a ping-pong sound is generated after the display “There is a shadow”, and “There is a visitor” is displayed on the display 18 (see FIG. 5A). .

  When it is difficult to see the camera image due to insufficient light intensity at night, etc., the lamp 37 is turned on by setting one of the auxiliary buttons provided on the operation button unit 17 of the slave unit 1 as an illumination button. be able to. The lamp 37 may not be provided in the door phone 3, and a lighting instruction signal may be output to a separately installed entrance lamp. Therefore, the illuminance to the subject is measured by the image analysis circuit 26 of the base unit 2 based on the video signal output of the camera 38 from the time when the object sensor 39 detects the object shadow or when the touch sensor 36 detects it. If it is determined that the number is small, this is notified to the CCU 23 and an instruction to automatically turn on the lamp is issued. Further, a lighting instruction may be issued directly from the operation button unit 17 of the slave unit 1. The signal flow at that time is as follows: the operation button unit 17 of the slave unit → the user interface circuit 16 → the CCU 12 → the wireless communication unit 11 → the wireless communication unit 24 of the master unit 2 → CCU 23

  Conversations and telephone conversations using this door phone are automatically recorded / recorded on the HD 27, but the recording (recording of video and audio) is started after the object sensor 39 of the door phone determines that “there is a shadow”. Or from the time when it is detected that the touch sensor 36 is touched, and the end of the recording is sensed by the object sensor 39, and when the touch sensor is not touched and the conversation with the visitor does not start, When the object sensor 39 no longer senses an object and a certain time elapses, the recording ends, and when the touch sensor 36 is touched and conversation starts, the recording ends when the conversation with the visitor ends. In the case of a telephone conversation, only the voice is recorded, but the recording is started when it is determined that the call is set by the NCU 21 (in short, just before “if, if” starts), the recording ends when the conversation ends. (When the end button is pressed).

  The doorphone 3 placed at the front door may be stolen. In particular, the door phone 3 of the present embodiment, which does not require wiring for wireless communication, has a high degree of danger.

  Therefore, in the door phone 3 of the present embodiment, an abnormal alarm sound generating unit 42 is provided for this purpose, and means for detecting (detecting) that it is removed from the installation location (for example, using a micro switch, Detecting the holding state is a simple method, but there are many other methods. When it is detected that it has been removed, the voice “Thief, thief,…” Is stored in the CCU 32) flows from the speaker 41.

  Of course, as long as the power supply by the battery 34 continues, the image of the criminal is transmitted to the parent device 2 from the time when the criminal approaches the door phone 3 until the battery 34 is exhausted. The battery 34 is constantly charged by the charging circuit 33 with at least the electric power necessary to generate its volume.

  Even if the door phone 3 is detached, it is difficult to generate the abnormal alarm sound when the door phone 3 is installed or at the time of repair and inspection. For this reason, an instruction for enabling the abnormal alarm sound generator 42 ( In general, it can be generated after the installation is completed and the actual operation state is entered.

  This operation enable instruction is performed from the slave unit 1 using the maintenance mode, for example, and the instruction signal is the operation button unit 17 of the slave unit 1 → the user interface circuit 16 → the CCU 12 → the wireless communication unit 11 → the wireless communication unit of the master unit 2. 24 → CCU 23 → wireless communication unit 31 of door phone 3 → CCU 32.

  By the way, by making the battery 34 into a large capacity battery, the charging circuit 33 becomes unnecessary, and the door phone 3 can be completely made into a wireless door phone. In that case, the battery 34 can be checked so that the remaining amount of the battery 34 can be checked at any time. Information on the remaining amount of the battery is sent to the CCU 32, and when a certain limit is exceeded, for example, a light emitting diode (not shown) placed on the surface of the door phone 3 is turned on, or “battery replacement” is displayed on the display 18 of the handset 1. Or the like (not shown) to prompt the user to replace the battery.

  The bit rate necessary for transmitting the video signal of the door phone 3 is QVGA sized pixels (320 * 280), and if 10 frames of video are sent per second, the bit rate is close to 3 MBPS. IEEE. Is widely used in personal computers as a digital wireless communication system. If 802.11b is adopted, it is possible to transmit data, but it is desirable to compress data. As a data compression method, MPEG4 or H.264 is used. There are H.264 systems. An encoding circuit for video signal compression may be provided in the ADC 35. This encoding circuit is shown as VENCODE 35a in the ADC 35 in FIG.

  On the other hand, a decoding circuit that performs decoding corresponding to this encoding may be provided in the user interface circuit 26 of the slave unit 1. This decoding circuit is shown as VDECODE 16a in the user interface circuit 16 of FIG.

  By the way, the fingerprint sensor 43 provided in the door phone 3 can send an unlocking instruction signal to an electronic lock separately installed by placing the fingertip on the sensor 43. The fingerprint sensor output signal from the fingerprint sensor 43 is collated with the resident's fingerprint information registered in advance in the HD 27, and if they match, the electronic lock is opened.

  If there is anxiety about matching only fingerprints, the face image captured by the camera image is checked against the resident's face data registered in advance, and an unlocking instruction is issued only when the fingerprints match and the faces match. A method of outputting is also good.

  The coincidence between the fingerprint and the face image is determined by the image analysis circuit 26 of the parent device 2, and the unlock instruction signal is output from the CCU 23. In this embodiment, an example using a fingerprint sensor has been described, but today's biometric authentication technology has made remarkable progress, and various biometric authentication elements such as an iris sensor and a vein sensor have been put to practical use. Therefore, which sensor is actually used can be determined in consideration of the reliability and cost required by the system.

  In the above description, the camera video signal from the doorphone 3 is described as being compressed in the ADC 35. However, when the data is not compressed, the VENCODE 35a in the ADC 35 and the user interface of the slave unit 1 are used. The VDECODE 16a in the circuit 26 becomes unnecessary. However, in order to record and store video data in the HD 27, it is desirable to perform data compression. At that time, the CODEC 25 of the base unit 2 has not only the data compression of audio information but also the function of compressing and decoding video information.

  For making an ordinary call using the handset 1 of the door phone system of the present embodiment, pick up the handset 1, select “Dial” in the display example shown in FIG. 5C, and press the enter button. . Then, the dial destination candidates stored in the user interface circuit 16 are displayed (not shown). Place the cursor on the other party you want to call and press ENTER (of course, you may dial from the numeric keypad suddenly) Then, the dial information reaches the AD / DA 22 of the base unit 2 via the CCU 12 and the wireless communication unit 11, creates a dial tone corresponding to the dialed telephone number, and sends it to the NCU 21.

  Subsequently, when the operator of the handset 1 presses a “start button” (see FIG. 5C), the call operation is automatically performed from the NCU 21 and the dial tone is transmitted onto the telephone line. The

  Thereafter, the ringing tone coming from the telephone station, the busy tone in the case of a call, and the voice of the other party go through the AD / DA 22 and reach the handset 1 through the CCU 23 and the radio communication unit 24 together with the other party's telephone number. Then, the sound can be heard through the speaker 15 via the wireless communication unit 11, the CCU 12, and the AD / DA 13. The voice of the person who made the phone call, that is, the operator of the child device 1 reaches the NCU 21 of the parent device through the reverse signal path from the microphone 14 and is transmitted on the telephone line.

  All the call information is automatically stored when “automatically store in HD 27” is selected in the default setting or the selection setting by the user. The end of the call is performed by pressing an “end” button (see FIG. 5C).

  When a call is received, the signal flow is almost the same as that for making a call.

  That is, the telephone number information of the other party is notified by dial tone from the telephone office, and the information is output as digital information by the AD / DA 22 and is registered in the address book registered in advance in the HD 27. The name reaches the handset 1 and is displayed on the display 18 (see FIG. 5B). At the same time, a ringing tone sounds from the speaker 15 of the handset 1, and a call is started by pressing the start button.

  By the way, the door phone system of the present embodiment enters the maintenance mode by pressing “maintenance” shown in FIG.

  The maintenance mode is an instruction for enabling the operation of the above-described abnormality alarm sound generation unit 42, initial setting or setting change of the base unit 2 that does not have any operation unit, update of the telephone address book, reproduction of recorded contents, and the like. Then, transfer to an external personal computer, object sensor 39, fingerprint sensor 43, CCD 38b sensitivity setting, and recording condition setting (for example, the recording that is ended by the call end button is automatically deleted).

  These settings are performed on the display 18 and the operation button unit 17 of the handset 1, but the operation method can be executed in the same operation flow as that used in the mobile phone, and thus detailed description is omitted. To do. This operation can be set from a LAN connector or an external personal computer connected wirelessly without using the handset 1.

  In the above description, the embodiment has been described with reference to the functional block diagrams in FIGS. 2, 3, and 4. In practice, however, the door phone system of the present invention includes a microcomputer, ROM, RAM, This is realized by a general configuration adopted by many electronic devices, including a dedicated LSI as necessary.

It is a figure which shows the whole structure of the door phone system by this invention. It is a block diagram which shows the structure of the door phone shown in FIG. It is a block diagram which shows the structure of the subunit | mobile_unit shown in FIG. It is a block diagram which shows the structure of the main | base station shown in FIG. (A)-(c) is a figure which shows the example of the operation screen which appears on the display of a subunit | mobile_unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Child machine 2 Parent machine 3 Door phone 11, 24, 31 Wireless communication part 12, 23, 32 Communication control part 13, 22, 35 Analog-digital converter 14, 40 Microphone 15, 41 Speaker 16 User interface circuit 17 Operation button part 18 Display 21 Telephone network control circuit 25 CODEC
26 Image Analysis Circuit 27 Hard Disk 28 LAN Interface Circuit 33 Charging Circuit 34 Battery 36 Touch Sensor 37 Lamp 38 Camera 39 Object Sensor 42 Abnormal Alarm Sound Generation Unit 43 Fingerprint Sensor

Claims (8)

  A door phone comprising a wireless communication unit, a communication control unit, a camera unit, a microphone, a speaker, and an abnormal sound generation unit.   A base unit that is wirelessly connected to the door phone according to claim 1 and includes a wireless communication unit, a communication control unit, an image analysis circuit, and a nonvolatile storage device.   3. The master unit according to claim 2, wherein the analysis result of the image analysis circuit is stored in the non-volatile storage device, and the result can be taken out from an outside place.   The door phone according to claim 1, further comprising an object sensor for detecting a surrounding object.   The door phone according to claim 1, further comprising a biometric authentication element.   The base unit according to claim 2, further comprising a lamp lighting instruction unit.   3. The master unit according to claim 2, further comprising an unlocking instruction unit for the electronic lock.   The door phone according to claim 1, the parent device according to claim 2, and a child device having a microphone, a speaker, a wireless communication unit, a communication control unit, an operation button unit, and a two-dimensional display device. A featured wireless door phone system.

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