JPS62180499A - Catv control system - 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] [Field of Industrial Application] The present invention relates to a CA usage control system, especially a CA usage control system.
It relates to a control system that uses TV and telephone networks.

[Prior Art] Conventionally, a telecontrol system as shown in FIG. 2 has been developed and sold for general home use. That is, the telecontrol device 5 installed in the house or dwelling unit 4 of a general household is connected to the local station 2 of the telephone network 1 by the telephone subscriber line.
1, and also connected to various sensors/alarm generators 71 to 7o and various control devices 81 to 81 in the house 4. And in case your family is away, etc., the telecontrol device 5
If you set the home while you are away, your family can prevent gas leaks, fires, locks, etc. in your home 4 by using the external phone 3 to enter the appropriate password and operate the monitor/control. It is used to monitor the condition and to control the controllers such as baths, electric kettles, air conditioners, etc.

However, this conventional control system requires the installation of a telecontrol device 5, which is expensive for general household use! There was a drawback that it became a 1lIi system.

Furthermore, since the telephone line is shared with the telephone 6, there is a drawback that telecontrol and monitoring cannot be performed while the telephone 6 is in use.

[Means for Solving the Problems] The purpose of the present invention is to eliminate the drawbacks of the prior art described in ml,
It is an object of the present invention to provide a control system that enables CATV subscribers to utilize functions equivalent to or superior to the above-mentioned teleconference mill roll system at a low cost by using CATV.

That is, the gist of the present invention is to install one to several telecontrol devices in a CATV center or subcenter, connect them to a CATV-based monitoring and control device, and convert command signals from external telephones into digital signals. and CAT
Transfers the signal to the monitoring station in each dwelling unit via the V network, receives digital signals from the monitoring board in each dwelling unit via the CATV network, and sends this to an external telephone that is suitable for voice and other telephone networks. The purpose of this technology was to convert the signal into a telecontrol signal, thereby making it possible to use the telecontrol function at a low cost.

FIG. 1 shows an embodiment of the present invention.

CATV has been used mainly as a public listening facility to prevent difficulty in viewing TV signals, whether in cities or rural areas, but in recent years so-called urban CATV'hX, which has added functions such as security, has become popular.

This is a broadcast receiving antenna 11 which is a facility for public listening.
, head amplifier 31, signal distributor 13, splitter 161~
165, in addition to the transmission line 20, a demultiplexer/multiplexer 32, a supervisory control 1llI device 14 are additionally installed on the center 10 side, a residential unit monitoring panel 17 is additionally installed on the residential unit 4 side, and the transmission line 20 is used to connect the TV.
The center 10 side monitors the safety of the CATV subscriber's dwelling unit by transmitting the dwelling unit monitoring signal in addition to the signal. The TV signal and the monitoring signal are demultiplexed and multiplexed inside the residential monitoring board 17. Sensor/alarm generator 7
1 to 7o include gas leak sensors, fire detectors, emergency button switches, intrusion sensors, etc. Emergency signals from each dwelling unit are received by the center 10 and dealt with, and plans or implementation are underway to relay the signals to the police, fire department, etc., depending on the type of emergency signal. Transmission line 20
Up until now, almost all of these have been coaxial cables, but optical fibers capable of transmitting wideband signals will likely be introduced in the future.

If a telephone interface device 10 is additionally installed in the CATV center 10 described above, all CATV subscribers or teleconverters 1 will be able to use the facility. Below, the first
This will be briefly explained using figures. In addition to various alarm generators 71 to 7o, various control registers 81 to 8o are installed in the dwelling unit 4 in accordance with external control items. Control 011 devices include power-on relays (=J outlets) and electrical appliances with control signal input terminals.C
A/V subscribers or their family members may be concerned about the condition of their home, such as gas, fire, break-in, etc., or forgetting to lock the door while they are out.
If you want to monitor whether you have forgotten to turn off the power, or if you want to control things like turning on the air conditioner, heating, rice cooker, etc. in your home before returning home, you can call the CATV management center from an external public phone or from your home phone. Dial the telephone number of the telecontrol service and call the telephone interface device 15. Once connected, commands are given to monitor or control desired items through predetermined operations.

At this time, the telephone interface device 15 converts the command signal from the external telephone 3 into a corresponding digital signal and passes it to the supervisory control device 14. The pre-celebration control device 14 decodes this digital signal and performs processing such as determining the housing unit number, checking the password, and determining monitor or control items, and issues a monitor request based on the results. The request signal is sent to the residence 1 via the CATV line.
The information is transmitted to the band viewing board 17. Based on this request signal, the residential unit monitoring panel 17 monitors the sensors/alarm generators 71 to 71),
Alternatively, the control device 81-8 is executed, and the results are transmitted as a data signal to the supervisory control device 14 via the CATV line.

The supervisory control device 14 decodes this data signal, checks the contents, and then transmits the response to the command from the external telephone 3 as a digital signal to the telephone interface device 15. The telephone interface device 15 generates an appropriate mechanical sound or synthesized voice in response to this digital signal, and transmits it to the external telephone 3 via the telephone network 1. For example, if you issue a gas leak monitor command from phone + A3, "
A synthesized sound such as "There is no gas leak" is sent back.

In this way, all CATV subscribers can use the same functions as the telecontrol system of FIG. 2 through the telephone interface device 15 installed in the center 10. Furthermore, since CATV is used, the control/monitor functions are possible even when the TV reception system 1B is in operation, regardless of the use of telephones in each dwelling unit. Since the number of subscribers per CATV system generally ranges from several hundred to several thousand, the telephone interface device 1
5, even if an expensive one is used, the increase in burden per subscriber is extremely small. Therefore, it is possible to add advanced functions such as voice recognition to the telephone interface device 15. For example, in each Toda telecontrol system shown in FIG. Control and monitoring is possible even from a dial telephone. In addition, if the subscriber line connected to the telephone interface device 5 is made into multiple lines in consideration of the frequency of use of this control system, or if a representative number system is used, the probability of being called out during a call can be reduced from a practical point of view. It can be reduced to a degree that does not occur.

[Effects of the invention] The present invention, which is constructed as described above, allows all CATV subscribers to monitor and control (telecontrol) their homes from external telephones by simply installing one telephone interface device at the center. (1) There will be only a slight increase in the burden per subscriber.

(2) Since functions such as voice recognition can be added to the telephone interface device, a telecontrol system that is easy to use and has a wide range of applications can be provided, such as eliminating the restriction that only a button phone can be used as an external telephone.

It has the following effects, and its value is great.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the CATV-based control system of the present invention, and FIG. 2 is a block diagram showing an example of a conventional telecontrol system. 1: Telephone network, 21-22: City station, 3: Public or home telephone), 4: Residential (including apartment units, etc.), 5: Telephone 1
6: Home telephone, 71-7o: Sensor/alarm generator, 81-8o: Control device, 10: CATV management center, 11: Broadcast receiving antenna, 30: Signal transmitting/receiving device, 13: Signal distributor , 14: Supervisory control device, 15: Telephone interface device, 16 to 165: Branch, 17: Residential monitoring board, 18: TV receiver, 31: Head amplifier, 32: Demultiplexer, 20: Transmission line .

Claims (1)

[Claims] (1) A telephone network subscriber line is connected to a telephone interface device installed at a CATV (cable television) center or subcenter, and the telephone interface device connects the CATV line directly or via another control device. The CATV subscriber dwelling units connected to the network include 1
An in-house monitoring panel to which the above-mentioned sensors, alarm generators, and control devices are connected is connected to the CATV network and installed, and the telephone interface device recognizes voice and other telephone signals and outputs digital signals in response to them. Convert to the above C
Recognizes digital signals transmitted to the residential unit monitoring board via the ATV line network, and from the residential unit monitoring board via the CATV line, and converts them into voice and other telephone signals in accordance with the digital signals. A CATV control system characterized in that the inside of the CATV subscriber's dwelling unit can be monitored and controlled from an external telephone.