JPS605981A - Anti-theft apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a security device installed in collective housing such as condominiums, company dormitories, and the like.

In conventional crime prevention facilities, all entrances and exits of the facility are monitored to ensure that they are closed, at a time when the number of people entering and exiting the facility has ceased, such as during the night. Therefore, each time a person involved came in or out after the door was closed, they had to go to the manager's office, declare their identity, be interviewed, reset the security device, and then open the door.

Therefore, in the present invention, the entrance facility is equipped with a key as a signal generator in advance, and by pressing a predetermined designated number, the person concerned notifies the manager that the person concerned has returned home, and at the same time The person who issued the message, that is, the person standing at the entrance, was recorded on a television camera, and after the administrator checked the image, the administrator could unlock the entrance and let the person pass through without leaving the administrator's facility. Provide crime prevention devices [7]
This is what we are trying to do.

The drawings showing the embodiments of the present application will be described below.

The drawing assumes an apartment building, multi-story dormitory, student dormitory, etc., and shows an example of a security device installed therein. A indicates the entrance facility, B indicates the administrator facility,
Dl to DN indicate the housing unit facilities of each resident. These facilities are interconnected by transmission lines C. This transmission tsC
Usually, a coaxial cable is used as a coaxial cable, and on this cable, the signal of the television community reception device and the signal of the communication equipment (not shown) between the entrance, the housing unit management facility, and the housing unit are also superimposed. Additionally, a signal for calling the residence and a signal for monitoring the faces of visitors are superimposed from the entrance. Next, if you want to call, for example, room 723 in the dwelling unit in each element provided in the entrance facility (also simply referred to as the entrance), you can press the /, 2.3 and buttons in sequence. 2 shows a latch circuit for storing and retaining the logic signal from the key part until it is reset;
For example, manufactured by Mitsubishi Electric Corporation (hereinafter also simply referred to as manufactured by M)
Logic l0M74tL8/7j may also be used. 3 is for converting the number specified for each dwelling unit into a digital code (address signal), and is a control signal (for example, an encoder made by 51).
It may be constructed using Mj; θ//jP. 4 indicates the carrier wave (frequency f, = //uk), and 05 indicates the de-modulation circuit.
It consists of a branching circuit combined with a bandpass filter. Next 1 (C6 and 7 each indicate a timer circuit,
The former is designed to output a reset ID (for example, logic signal L) to the latch circuit 2 after a certain period of time (for example, 3θ seconds) after only a signal is input to the input terminal, and the latter is designed to output a reset signal (for example, logic signal L) to the latch circuit 2. A certain period of time (
For example, a control signal (logic signal B) for continuous operation of σ1 is output for a continuous period of σ1 (for example, 30 seconds). Next, 8 indicates a commonly known monitor television camera.
Any camera such as a V camera may be used. Reference numeral 9 indicates a modulation circuit, which amplitude modulates the video signal from the television camera, and has a carrier wave frequency f 2 ='l11.
The one from 2j&ih is used. Next, reference numeral 10 indicates an electric lock, which is installed on the entrance door of the entrance, and is designed to lock or lock and unlock the lock, for example, AC7θ.
It is best to use one that operates under ■. Reference numeral 11 denotes a timer circuit, which continues to send a control signal for unlocking the electric lock 10 for a certain period of time after a signal is input to its input terminal. Furthermore, if necessary, a tape' that can be linked to this may be provided, and the tape may be used to say "Please come in." shi indicates a decoder,
When a digital code for unlocking is input from the input terminal, an output (for example, a logic signal ■) is output. It is preferable to use an FM demodulation circuit with a carrier wave center frequency fs (=9Vh, etc.).Next, in the administrator facility (also simply referred to as management) B, 14 indicates a display, for example, a 7-segment light emitting diode is used. 1 to display the signal input to the key part 1.
5, 16, and 17 are a sequential display circuit (a circuit that processes the digital code from the decoder and displays it on the display) and a decoder (for converting the address signal into a room number code (for example, a decimal digital code)). (e.g. λ
(You may also use ICA15θ//7P for remote control manufactured by Manufacturer Co., Ltd.), a demodulation circuit (a circuit for extracting the address signal (digital code) of the called dwelling unit from the signal for calling the dwelling unit), etc. The one used is a demultiplexer circuit combined with a bandpass filter. Next, 19 is a monitor television, which is usually an AV television or the like. + indicates the demodulation circuit,
Monitor signal (f2='I<'-25NI
The video signal is extracted from the

V, [21 indicates an unlock switch, for example, a push button switch or the like is used, and when the switch is pressed, a signal of, for example, H is output. ρ, 23.24 is a sequential timer circuit (configured to send a driving signal ■ to the encoder for a certain period of time when the signal ■ is input to the input) and an encoder (when the input ■ is input, the drive signal ■ is sent to the encoder for unlocking). This is a circuit that uses a digital code as a device to continue outputting, and is a remote control ICM made by M, tθ/
/3P) and a curved circuit (frequency fs (
-9uk, etc.) circuits for frequency modulating the output from the encoder using carrier waves.

The electronic circuit at the entrance facility A mentioned above and the administrator facility B
What are the electronic circuits installed in the transmission i! They are connected via JC as shown in the figure.

Next, the electronic circuit system shown in the plurality of dwelling units D1 + D2...DN will be explained, but since it is common to each dwelling unit except for a part, only the dwelling unit Dl will be explained, and the overlapping explanation will be omitted for other dwelling units. Omitted. 5 indicates a monitor television, which is usually an AV television or the like. Reference numeral 26 indicates a switch circuit, for example, a relay switch is used to control the control signal (
For example, it is configured to turn on when the level (■ level) is entered. τ indicates a power supply, which is for driving a monitor television, and may be an AC310θ■ power supply. 28, 29.30
is a sequential decoder (it outputs a control signal (logical signal at H level) when a digital code specifying this dwelling unit is input. Of course, it is designed so that it will not be output even if the code of another dwelling unit is input. For example, you may use ICh130//7P for remote control manufactured by M.) and a demodulation circuit (FM demodulation circuit, with a frequency of It is designed to output a digital signal ('address signal) at (The signal is configured to be split into a calling signal and a monitoring signal.) Next, numeral 31 represents a demodulation circuit, which extracts a true image signal. Incidentally, the code for the dwelling unit for calling must be different for each dwelling, and only predetermined dwelling units can be called by the signal selectively input in Part 1 above. There must be. This point is achieved by the fact that the designated digital code of the decoder Z in each dwelling unit is different for each dwelling unit.

Next, the operation of the security device will be explained. First, it is assumed that a pre-scheduled visitor comes to the front door and calls a specific dwelling unit. In this case, from outside the entrance to the above-mentioned part 1, for example, a call number specified for a specific dwelling unit is sent, for example, a logic signal 2 is sent to the timer 6, 7 and the latch circuit 2. Based on the function, this signal is sent to encoder 3
It becomes an address signal, passes through a modulation circuit 4, a branching circuit 5, and reaches a transmission line C. A signal is output to each dwelling unit. In each dwelling unit, the signal passes through a branching circuit (9) to demodulation circuits and a decoder. In this decoder row, the signal also operates a switch circuit to operate the monitor television 6 in the corresponding dwelling unit. - In an all-purpose dwelling unit, the monitor TV will not be activated because there is no signal to activate the switch when the decoder is attacked. A person standing in front of a part of the entrance hall is captured by a television camera, and the signal passes through a modulation circuit 9 to a branching circuit 5, and then is transmitted to management B and each residence via transmission @C. directed towards. In the corresponding dwelling unit, the signal passes through a branching circuit (equipment) and a demodulation circuit 31 and is displayed on a monitor TV, and is not transmitted to a monitor TV in other dwelling units. On the other hand, in the management B, the manager can watch and listen to the visitor through the branching circuit and demodulation circuit to the monitor television 19.

In addition, the signal from the above-mentioned part passes through the branching circuit, the duplex circuit 11, the decoder 16, and the display circuit 15. You can find out if there is. The administrator will contact the corresponding dwelling unit by telephone if necessary (if necessary, or if the person is known to be visiting the dwelling unit in advance (for example, if the person is a resident of the dwelling unit or If the visitor is a visitor who has been notified in advance), operate the unlock switch 21 to unlock the electric lock 10 of the entrance door, and if necessary, use an interpon (not shown) to open the door. Although the building is not equipped with a transmission line C, audio is transmitted using the transmission line C), allowing visitors to enter the building.

After that, safety can be maintained again by operating the unlocking switch in the opposite direction to lock the electric lock, or by setting the electric lock attached to the entrance door to an automatic lock type in advance.

Next, Fig. 2 shows the display section (symbol E) in the management B in Fig. 7.
This indicates a different example of the part surrounded by
The part surrounded by ' will be explained below. The wing is a decoder, which shows a circuit that converts an address signal into a room number code. A 36Fi microcomputer is used to generate signals for creating video signals.

As this device, TK-fj manufactured by NEC Corporation may be used. U indicates a video signal generation circuit, NT80
It is also called an encoder, and for example, "Genkan → OO
This shows a circuit that generates an NT80 standard signal to display the room number being called on the monitor TV, such as ``Goshitsu''.

A indicates a changeover switch, and a commonly known type such as a push button switch is used. Normally, set it to the a side,
This is so that it can be set to side B when confirming the customer's destination. The device indicates a monitor television, which usually only monitors the face of the person who comes to the front door. If you want to confirm the destination of a customer's call, you can monitor the residence number of the person you are calling. In this case, operate the selector switch to display the information.

As described above, according to the present invention, a visitor or a person returning home can stand at the entrance and enter the room number he/she wants to go to via the key location, and the administrator can do so without seeing him/her. Furthermore, the entrance door can be opened by operating the unlock switch while confirming the destination room number as necessary, thereby preventing unauthorized persons from entering through the entrance.

In addition, in each dwelling unit, if a visitor taps on the TV in his or her room, if the visitor is an undesirable person, the manager's office will be contacted in an emergency manner using a telephone device not shown. Since it can also be used as an emergency measure, it can be used as a convenient crime prevention device.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 shows a system diagram of the security device, and FIG. 2 shows a system diagram showing the nest display section. A...Entrance facility, B...Administrator facility, C...Transmission line, D...Dwelling unit. Figure 2-399-

Claims (1)

[Claims] A device used in a facility having an entrance facility, a management facility, and multiple dwelling units, wherein the entrance facility is equipped with a calling key, a television camera, and an electric lock, and the entrance facility is equipped with a calling key, a television camera, and an electric lock. Each unit is equipped with a monitor TV and a lock switch for the entrance door (17), and each of the above-mentioned units is also equipped with a monitor TV, and the call number assigned to the unit is provided with a part of the above. By inputting , the video signal from the TV camera is sent to the monitor TV in the designated residence, and the video is also sent to the monitor TV in the manager's facility. A crime prevention device characterized in that the electric lock at the entrance facility is opened by operating an unlock switch.