JP2002325247A - Remote monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote monitoring system by means of a video telephone which performs the remote monitoring and an information collection in real time and does not require various equipment to be installed, and does not leak video and audio information to a third party through a telephone line. SOLUTION: The remote monitoring system comprises a video telephone 1 installed on the monitoring side, a video telephone 6 installed on the monitored side, a visual selector 5 that is installed on the monitored side, selects input image signals, audio signals, sensor signals or the like based upon a selection request signal sent from the monitoring side, and sends the selected signals to the video telephone on the monitor side via the video telephone on the monitored side, a telephone line 4 for connecting the video telephone 1 on the monitor side, the video telephone 6 on the monitored side, and the visual selector 5, and means for confirming the password sent from the video telephone on the monitor side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring system capable of monitoring a store or an office at a remote place using a videophone.

[0002]

2. Description of the Related Art Conventionally, there is a system for remotely monitoring a store or the like in a remote place by a videophone. And a control signal such as video signal selection and audio signal selection transmitted from a computer (control terminal) installed on the monitoring side to the monitored side via a modem via a modem.

[0003]

However, in the conventional remote monitoring system, in order to send control signals such as video signal selection and audio signal selection, a monitoring side such as a headquarters or a home requires dedicated control other than a videophone. A terminal was required, and the entire system was large and expensive.

[0004] In addition, in terms of security, there is a problem in that video information can be easily obtained as long as a third party can connect to a terminal videophone.

[0005] Therefore, the present invention provides a video telephone which can perform remote monitoring and information collection by a video telephone in real time, does not require installation of various kinds of equipment, and does not leak video and audio information to a third party through a telephone line. To provide a remote monitoring system.

[0006]

SUMMARY OF THE INVENTION A remote monitoring system according to the present invention comprises a video telephone set on a monitoring side, a video telephone set on a monitored side, and a video signal set on a monitored side and an input image signal. A visual selector that selects an audio signal, a sensor signal, and the like based on the selection request signal transmitted from the monitoring side, and transmits the selected signal to the monitoring side videophone via the monitored side videophone, It is characterized by comprising a telephone line for connecting the videophone on the monitoring side, the videophone on the monitored side, and the visual selector, and means for confirming the password transmitted from the videophone on the monitoring side.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, signals of a plurality of television cameras installed on a monitored side, other video signals,
The audio signal and the sensor signal can be monitored by the monitoring videophone via the visual selector and the monitored videophone.

In addition, since the video and audio of the monitored side can be easily switched by operating the numeric key and the symbol key of the video phone of the monitoring side, follow-up monitoring is possible. Therefore,
In the case of the monitored side, for example, in the case of a store, the whole operation such as shoplifting can be monitored by the operation of the monitoring side, and can be recorded on the recording device.

A sensor is connected to each device on the monitored side to collect data, which is processed by a microcomputer and converted into video data and audio data.

[0010] The converted video and audio data can be monitored through a videophone, so that information other than security monitoring can be obtained.

Regarding security, since there is a security check function such as confirmation of a password of a plurality of digits, illegal connection by a third party can be prevented.

[0012]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the overall configuration of a remote monitoring system according to the present invention, and FIG. 2 is a diagram showing the configuration of a visual selector which is a component of the system. As shown in FIG. 1, a videophone 1 is installed on a monitoring side such as a headquarters or a home, and a videophone 6 and a visual selector 5 are installed on a monitored side such as a store or a parking lot. Each is ISD
They are connected by N lines.

In the remote monitoring system of the present invention, various video signals, audio signals or sensor signals are input to the visual selector. Video signals include, for example, those from video cameras, cable television, DVD decks,
There is a video signal from a personal computer.

The sound signal includes, for example, a sound signal from a microphone installed outdoors or indoors, a sound from an emergency broadcast facility, and a sound from each broadcasting device.

The sensor signal includes, for example, a signal of a security sensor using infrared rays, a temperature sensor, a humidity sensor, a security sensor of a vending machine, an emergency switch, and the like.

As can be seen from FIG. 1, the system is configured with a simple equipment configuration in which two videophones 1 and 6 on the monitoring side and the monitored side and one remote monitoring visual selector are provided.

Next, the operation of the remote monitoring system according to the present invention will be described.

The videophone 1 on the monitoring side sends an ISDN line 4
Is used to connect to the videophone 6 on the monitored side. When the connection is established, an audio signal and a video signal requesting a password are returned from the visual selector 5, and the key 3 of the videophone 1 is operated to transmit a several-digit password composed of a combination of numbers and symbols as a tone signal.

The tone signal of the password received by the monitored videophone 6 is transmitted to the DTMF decoder 7 shown in FIG.
The tone signal is converted into a 4-bit digital signal, and converted into a number and symbol from 0 to 9 by a combination of the 4-bit signal. The received signal of the number of digits is compared with the password registered and stored in advance by the microcomputer 8, and when the password is recognized, the operation mode is entered and the video signal and the audio signal can be selectively switched and monitored. The video and audio signals of the monitored side (stores, parking lots, etc.) are transmitted to the videophone 1 on the side (headquarters, home), and the video and audio can be monitored.

The number of selection patterns of video and audio signals can be set within a range possible by a combination of numbers. The selection operation is performed by operating the key 3 from the videophone 1 on the monitored side in FIG. As a signal, for example, the symbol "1" is sent to the monitored videophone 6 through the ISDN line by operating the key 3. The transmitted tone signal is converted by the DTMF decoder 7 as described above, and the symbol "1" is recognized through the microcomputer 8 to wait for the signal of the selected number. Next, the transmitted numbers are stored one after another, and the selection request signal of a plurality of digits is recognized by receiving the signal of the symbol “2” indicating the end. The recognized selection request signal is operated by the control unit 9 in accordance with the information set in the storage circuit of the microcomputer 8 to operate the video / audio signal switching unit 10 and the sensor signal converter 11, and the monitored videophone 6 in FIG.
LC of videophone 1 on the monitoring side via ISDN line 4
Displayed at D2.

FIG. 3 is a diagram showing an example of a system configuration in which a plurality of videophones are installed on the monitored side. The same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 3, even when the monitored videophone 6 and the visual selector 5 are installed in a plurality of stores and parking lots, only one videophone 1 is provided on the headquarters or home monitoring side. Just by installing, each location can be monitored in real time.

[0024]

By installing a visual selector on the monitored side, remote monitoring can be performed only by installing a videophone on the monitored side, so that the system configuration is simple and a remote monitoring system can be easily constructed. As a result, crime prevention capability is improved more than before. In addition, it is easy to collect information on site.

Further, if a telephone line can be used (a place where a modular jack is installed in a public telephone, a hotel, etc.), monitoring can be performed from outside the home or office simply by connecting a videophone.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of the present invention.

FIG. 2 is a diagram illustrating a configuration of a visual selector according to the present invention.

FIG. 3 is a diagram illustrating an example of a system configuration in which a plurality of videophones are installed on a monitored side.

[Explanation of symbols]

1: Videophone on the monitoring side 2: LCD display 3: Key for videophone (dial key for tone signal) 4: ISDN line (telephone line) 5: Visual selector 6: Videophone on the monitored side 7: DTMF decoder 8: Microcomputer 9: Control unit 10: Video / audio signal switching unit 11: Signal converter

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Claims (1)

[Claims] 1. A videophone set on a monitored side, a videophone set on a monitored side, an image signal and an audio signal set on a monitored side and input,
A visual selector for selecting a sensor signal or the like based on a selection request signal transmitted from the monitoring side and transmitting the selected signal to the monitoring side videophone via the monitored side videophone; and a monitoring side television. A remote monitoring system comprising: a telephone line connecting a telephone, a monitored videophone and a visual selector; and means for confirming a password transmitted from the monitored videophone.