JPS6337548B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an in-home control device that accommodates a plurality of digital in-home devices such as a digital telephone and various non-telephone devices on an extension side to provide a composite communication service. This relates to a method of supplying power to connected digital home equipment.

[Prior Art] Conventionally, when a plurality of digital home devices are connected to a digital communication network, these digital home devices are connected via a home control device.

The home control device 1 has a block configuration as shown in FIG. 1, and supports, for example, a composite communication service in which a digital telephone 21 and a non-telephone device 22 such as a digital facsimile are used simultaneously or switched between them. It is intended to provide.
For example, if you first make a call using the digital telephone 21 (the selector switch 5 is connected to the solid line side in the figure) and want to exchange materials by facsimile during the call (switching communication service), you can connect the digital communication network 3 to the network interface. Ace R line, T line, 2
By controlling the information channel (digital path) provided via 4 and 25 in the home control device 1 based on the press of the selector switch 5 in the control section 16, etc., the information channel (digital path) provided through the digital telephone 21 side is In-home equipment interface R
Line, T line, 26, 27 to home equipment interface on the fax machine 22 side R line, T line, 28, 2
9 (dotted line side in the figure). Therefore, when providing such a composite communication service, it is necessary to connect the digital telephone 21 to the home control device 1 instead of directly connecting it to the digital communication network 3. In addition, 1 in the figure
8, 19, and 20 are interface circuits including a driver receiver circuit, a power separation circuit, and the like. Here, the digital telephone 21 is configured to operate with power supplied from the station when directly connected to the digital communication network 3. Therefore,
When performing composite communication, commercial power supply (AC100V) 1
7 is used to supply power to the digital telephone 21 from the home control device 1 which operates with power supplied from the power supply circuit 6.

However, the power supply method for the digital telephone 21 in the conventional home control device 1 is as follows.
For example, as shown in FIG. 2, since the home control device 1 cannot operate on only the station power supply, it does not use any station power supplied from the digital communication network via the network interface T line 25, and uses the commercial All the circuits in the home control device 1 are operated with the power supplied from the power supply circuit 6 operated by the power supply 17, and the digital home equipment 2 (for example, a digital telephone) that can be operated with the power originally supplied from the office is However, power was supplied from the power supply circuit 6 via the power separation circuit 9 and the home equipment interface T line 27.

Note that FIG. 2 shows only the portions related to the network interface lines 24 and 25 in FIG. 1 and the home equipment interface lines 26 and 27 on the digital telephone 2 side. 8, 9, 10, 11 are power separation circuits, 12, 15 are driver circuits, 1
3 and 14 are receiver circuits, 4 is a startup detection circuit, 2
3 is a starting circuit. When the digital telephone 2 goes off-hook, the activation detection circuit 4 detects this and
When the control unit 16 is notified, the control unit 16 maintains the loop of the network interface line 24 using the activation circuit 23 . The AC power supply 17 in the home control device 1 is
Power is supplied from the power supply circuit 6 to the digital telephone 2 via power separation circuits 8 and 9.

However, in Fig. 2, when the commercial power is cut off such as during a power outage, not only the in-home control device 1 becomes inoperable, but also the digital in-home equipment 2 connected to the in-home control device 1, which can be operated on the station power supply, becomes unusable. Therefore, there was a drawback that emergency communication using the digital telephone 2 could not be secured in the event of a power outage or the like.

[Purpose of the invention]

The purpose of the present invention is to improve such conventional drawbacks, and even if the commercial power supply is cut off due to a power outage, etc., the activation of digital home equipment connected to the extension side is notified to the digital communication network, and the power supply from the station is An object of the present invention is to provide a power supply method for an in-home control device that can supply power to digital in-home equipment and ensure emergency communication in times of disaster.

[Summary of the invention]

In order to achieve the above object, in the power supply system of the present invention, digital home equipment that can be directly connected to the central office line and can operate independently is housed on the extension line side, and digital subscriber lines are housed on the central office line side. In an in-home control device that operates on commercial power, the central office power supply path supplies power supplied from a telephone office to digital in-home equipment connected to the extension side separately from the commercial power supply, and detects commercial power outage. It has a power outage detection circuit and a switching circuit that switches the signal path when the commercial power is cut off, and supplies station power to the digital home equipment when the commercial power is cut off, and also transmits the start-up of the digital home equipment to the station, and the switching circuit The feature is that the digital signal path is switched to exchange signals between the digital home equipment and the station.

[Embodiments of the invention]

Hereinafter, an embodiment of the present invention will be described with reference to FIG.

In FIG. 3, an example will be explained in which a digital telephone (hereinafter referred to as DTEL) is connected as the digital home device 2. Note that, in FIG. 3, as in FIG. 2, the description of the home equipment interface portion for connecting non-telephone equipment is omitted. Below, the operations will be described separately when the commercial power supply is turned on, during a power outage, and when the power is re-energized. In either case, in order to enable the use of the DTEL connected to the home control device 1, (i) When using the DTEL, supply the station power to the DTEL.

(ii) DTEL call origination or call response (off-hook, i.e. premises equipment interface R line 2)
6 loop closure) to the digital communication network.

(iii) Sending and receiving digital signals between DTEL and a digital communication network.

It is necessary.

(1) When the commercial power supply is energized When a DTEL call is made (a) When a DTEL 2 call is made (off-hook, that is, the loop of the home equipment interface R line 26 is closed), the activation detection circuit 4 detects it and notifies it to the control unit 16. It is transmitted to the digital communication network 3 via the activation transmission path 31.

(b) The loop of the network interface R line 24 is maintained by the startup circuit 23 under the control of the control unit 16 based on the above (a).

(c) Portions that need to be operated by the station power supply of the home control device 1 through the station power supply circuit 7 for the station power supplied to the network interface T line 25 (signal path switching circuits 35, 36, 37, 38, drivers) circuits 12, 15, receiver circuit 13,
14) and the station power supply path 3.
2 and the home equipment interface T line 27 to the DTEL 2.

(d) Signal path switching circuits 35, 36, 37, 38
is connected to the control unit 16 side, and is connected to the network interface R line 2 from the digital communication network 3.
4, the received signal arrives through a power separation circuit 10, a receiver circuit 13, a control section 16 (including a circuit corresponding to the selector switch 5 in FIG. 1, a synchronization circuit, a signal frame disassembly/assembly circuit, etc.), Home equipment interface R line 2 via driver circuit 12 and power separation circuit 8
6 to DTEL2. Also,
The transmission signal that arrives from the DTEL 2 via the home equipment interface T line 27 passes through the power separation circuit 9, the receiver circuit 14, the control section 16, the driver circuit 15, the power separation circuit 11, and then via the network interface T line 25. It is sent to the digital communication network 3.

When a DTEL call arrives (Network interface R line 24
(no voltage is applied from the digital communication network 3) (a) This is the same as (c) above, so it will be omitted.

(b) The activation detection circuit 4 detects the incoming call response of the DTEL 2 (off-hook, that is, the loop closure of the home equipment interface R line 26) and transmits it to the control unit 16, and also transmits it to the digital communication network 3 via the activation transmission path 31. tell.

(c) By the control of the control unit 16 based on the above (b),
The activation circuit 23 connects the network interface R.
Hold the loop of line 24.

(d) This is the same as (d) above, so it will be omitted.

(2) During a commercial power outage When a DTEL call is made (a) The call (off-hook) of the DTEL 2 is transmitted to the digital communication network 3 via the activation transmission path 31.

(b) This is the same as (1) and (c) above, so it will be omitted.

(c) In accordance with the commercial power outage detection by the outage detection circuit 30, the signal path switching circuits 35, 36, 37, 3
8 from the control unit 16 side to the signal transmission paths 33 and 34
Switch to the side, network interface R line 24,
A digital signal arriving via the power separation circuit 10 and the receiver circuit 13 is transferred to the signal transmission path 3.
3, and is transmitted to DTEL via the driver circuit 12, power separation circuit 8, home equipment interface R line 26, and reaches via the home equipment interface T line 27, power separation circuit 9, and receiver circuit 14. The digital signal is transmitted to the digital communication network 3 via the signal transmission path 34, the driver circuit 15, the power separation circuit 11, and the network interface T-line 25.

When a DTEL call arrives (b) This is the same as (b) above, so it will be omitted.

(b) The incoming call response (off-hook) of the DTEL 2 is transmitted to the digital communication network 3 via the activation transmission path 31.

(c) This is the same as (c) above, so it will be omitted.

(3) When the commercial power supply is reenergized (when the power is reenergized after a power outage while in a call state) A call state due to a DTEL call (a) Activation detection circuit 4 detects the off-hook state of DTEL2 (the loop of the home equipment interface R line 26 is closed) is detected and transmitted to the control unit 16.

(b) Based on the control of the control unit 16, the starting circuit 23
The loop of the network interface R line 24 is maintained by the network interface R line 24.

(c) In accordance with the commercial power supply energization detection by the power outage detection circuit 30, the signal path switching circuits 35, 36, 37,
38 from the signal transmission paths 33 and 34 side to the control unit 1
6 side, and digital signals are sent and received through the control unit 16 that operates with power supplied from the power supply circuit 6 based on the commercial power supply 17.

Call status due to incoming DTEL call This is the same as above, so it will be omitted.

In this way, in FIG. 3, the station power source is switched off so that the digital home equipment connected to the home interface of the home control device 1 and operating on the station power supply can be used even when the commercial power is cut off such as during a power outage. It is bypassed within the home control device 1 and supplied to digital home devices, and the activation of the digital home devices is transmitted to the digital communication network even when the home control device 1 is not operating, and the digital signal path is switched to the bypass side upon detection of a power outage. This makes it possible to send and receive digital signals between the digital home equipment and the digital communication network.

〔Effect of the invention〕

As explained above, according to the present invention, even if the commercial power supply is cut off due to a power outage or the like, the activation of the digital home equipment connected to the extension side of the home control device can be notified to the digital communication network, and the digital Since digital signals can be sent and received between in-home equipment and the digital communication network, digital in-home equipment that can operate on station power even during a commercial power outage can be used.
It can be used while connected to the extension side of the in-home control device, making it possible to perform emergency communications in the event of a disaster.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a conventional home control device, Fig. 2 is a block diagram of a home control device using a conventional power supply system, and Fig. 3 is a block diagram of a home control system using a power supply system according to an embodiment of the present invention. It is a block diagram of an in-home control device. 1: In-home control device, 2: Digital in-home equipment,
3: Digital communication network, 4: Startup detection circuit, 5:
Selector switch, 6: Power supply circuit, 7: Station power supply circuit, 8, 9, 10, 11: Power separation circuit, 1
2, 15: Driver circuit, 13, 14: Receiver circuit, 16: Control unit, 17: Commercial power supply, 18, 1
9, 20: Interface circuit, 21: Digital telephone, 22: Non-telephone equipment, 23: Starting circuit, 24: Network interface R line, 25: Network interface T line, 26, 28: Home equipment interface R line , 27, 29: Home equipment interface T line, 30: Power outage detection circuit, 31: Startup transmission path, 32: Station power supply path, 33, 34: Signal transmission path, 35, 36, 37, 38: Signal path switching circuit.

Claims (1)

[Claims] 1 Multiple digital subscriber lines that can be connected directly to the central office line connected to the exchange housed in the telephone office and can operate independently are housed on the private line side, and digital subscriber lines are housed on the central office line side. , in a home control device operated by commercial power, a station power supply path that supplies power supplied from a telephone office to digital home equipment connected to the extension side separately from the commercial power supply, and a commercial power supply disconnection detected. It has a power outage detection circuit and a switching circuit that switches the signal path when the commercial power is cut off, and supplies station power to the digital home equipment when the commercial power is cut off, and also transmits activation of the digital home equipment to the station, and the switching circuit A power supply system for a home control device characterized by switching digital signal paths to exchange signals between digital home equipment and stations.