JP3511894B2 - Indoor wired communication method and apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for constructing a multi-channel indoor digital communication environment using existing telephone line equipment and reducing standby power consumption of indoor communication and home appliances.

[0002]

2. Description of the Related Art As a method of constructing an indoor data communication network using a digital public line such as ISDN, there have been conventionally proposed two methods.

The first conventional method is to use a DSU (digital subscriber unit) and a TA (terminal adapter). FIG. 1 shows this, 11 is an ISDN line, 12 is an indoor wiring consisting of two twisted wires, 13 is a DSU, 14 is a TA, and 16 is a general communication device or computer. With this configuration, the DSU is connected to the TA and i-interface via the indoor wiring.
Exchange data with. This configuration is not possible with a telephone line that is conventionally installed in a home and consists of one twisted wire, and with this method, i-interfa of ISDN is used.
It has a drawback that only two lines defined by the CE standard can be used.

The second method is to use an Ether network for indoor wiring. FIG. 2 shows this, 11 is an ISDN line, 22 is an indoor wiring consisting of two twisted wires, 13 is a DSU, 24 is a router for an Ether network, 26 is a communication device compatible with Ether. Or a computer. The Ether network is a method which is generally used as a local area network such as a business office. Although this method can easily construct a multi-channel local communication environment, it has a drawback in that it is not possible to use a telephone line consisting of one twisted wire, which is conventionally installed in a home. .

In addition, there is currently no mechanism or method for remotely controlling the ON / OFF of the power supply of home appliances using these communication methods by using the communication environment.

[0006]

DISCLOSURE OF THE INVENTION The present invention is a multi-channel local communication using a telephone line consisting of one twin wire, which is conventionally installed in a home, without additional wiring work in the home. An object of the present invention is to provide a communication method and a communication device that can remotely control ON / OFF of the environment and power of home appliances using the local communication environment.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a DSU coupled to an ISDN and a plurality of indoor communication devices are coupled by two twisted wires, CDMA multiplexed and transmitted, and a CDMA device is operated from a standby state to an operating state. The shift to (1) is performed by an external signal or a signal superimposed on a CDMA signal.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an embodiment of the first aspect of the present invention. Reference numeral 11 is an ISDN line, 32 is an indoor wiring consisting of one twisted wire, 13 is a DSU, 34 is a CDMA communication device, and 36 is a general communication device or computer.

[0009] CDMA is a communication system in which a digital signal and a key code signal for modulation are tapped and superimposed to spread the spectrum of the digital signal in a wide band, and the same frequency band is used, and the multi-channel data communication is performed by changing the key code signal. Is to do. If this method is used for priority transmission and the frequency band used is higher than the voice band, voice communication of a conventional telephone or the like will not be disturbed by the CDMA signal on the low frequency side, and it can be performed in the same manner as the conventional one. .

With this configuration, the DSU and general communication equipment are C
Data is exchanged with the DMA communication device via indoor wiring. Further, as shown in FIG. 4, multi-channel CDMA communication is assigned to the high frequency region, conventional analog telephone communication is assigned to the low frequency region, and a special signal in the low frequency region is assigned to each communication device, and this signal appears on the line. The device to which the signal is assigned shifts from the standby state to the operating state. For example, by assigning a dial tone, the device in the home can be switched from the standby state to the operating state by telephone from outside.

Further, when a personal computer or the like installed indoors generates a special signal, another personal computer installed indoors can be shifted from the standby state to the operating state.

Further, in the case where communication is performed between a large number of devices using a single communication path, it is necessary to prevent double access in which already used channels are used in duplicate. However, in the conventional CDMA system, it is necessary to decode the data flowing in the communication line with all the key codes to detect the currently used channel, but in the present invention, the special signal flowing in the communication line is detected. Since the used device is known only by detecting it, if the used channel of the used device is known in advance, the already used channel can be easily detected and double access can be prevented. You can The first item of the present invention is the case where the first CDMA communication device centrally owns this double access prevention mechanism. The second item of the present invention is a case where each CDMA communication device dispersively owns this double access prevention mechanism.

The third and fourth aspects of the present invention are the CDM of the first aspect.
A communication device is realized. FIG. 5 shows the third aspect of the present invention.
It is an example of a term. A digital data transmitting / receiving unit (51) for transmitting / receiving data to / from a DSU / ONU or a computer / communication device, a CDMA modulating / demodulating unit (52) for mutually converting digital data and a CDMA signal, and another CDM
A communication apparatus A has a CDMA signal transmitting / receiving unit (53) for performing multi-channel communication using CDMA signals,
A standby control mechanism (54) for detecting a signal of a specific frequency or a specific voltage superimposed on a signal and shifting from a standby state to an operating state, and a mechanism (55) for superimposing a signal of a specific frequency or a specific voltage on a CDMA signal. is there. The digital data transmitter / receiver unit (51) is a block for controlling a protocol for transmitting / receiving digital data to / from a data communication unit of a computer, ISDN, etc., and is a CDM.
The A signal transmission / reception unit is a block that performs mutual modulation / demodulation of digital data and a CDMA signal and superimposes the CDMA signal on a high frequency region. The standby control mechanism has a mechanism for sensing a signal of a specific frequency such as a dial tone superimposed on the low frequency region of the CDMA signal, and when a signal of a predetermined intensity or more is sensed, the entire device is changed from the standby state to the operating state. The operation for shifting is performed. Further, it has a function of superimposing a signal of a specific frequency on the low frequency region of the CDMA signal in order to shift another device to an operating state.

FIG. 6 shows the fourth embodiment of the present invention. A power supply control mechanism (6) for supplying power to a computer or a communication device which further supplies data to the embodiment of FIG. 3 (FIG. 5).
1) is added, and the power supply control mechanism sends electricity to a computer or a communication device in synchronization with the standby control mechanism when the standby control mechanism shifts from the standby state to the operating state.

[0015]

As described above, when the present invention is used, it is not possible to perform communication using the Ether network and TA that have been used up to now, and multi-channel data communication is possible with one existing two-wire twisted wire for telephone. It is possible to connect and operate a conventional telephone at the same time, and to turn on / off the power of communication devices and computers in the home from a remote location such as whereabouts.
It has an advantage that the FF can be controlled remotely. Therefore, the device in the home can normally turn off the power and stand by, and the power consumption in the home can be reduced.

[Brief description of drawings]

FIG. 1 is an example of conventional indoor communication using TA.

FIG. 2 is an example of conventional indoor communication using an Ether network.

FIG. 3 is an embodiment of the first and second aspects of the present invention.

FIG. 4 is an example of channel allocation in CDMA.

FIG. 5 is an embodiment of the third aspect of the present invention.

FIG. 6 is an embodiment of the fourth aspect of the present invention.

[Explanation of symbols]

11 ISDN line 13 DSU 32 two-wire indoor wiring consisting of one twisted wire 34 CDMA communication device 36 general communication equipment or computer 51 digital data transceiver 52 CDMA modulator / demodulator 53 for mutually converting digital data and CDMA signal CDMA signal transmitter / receiver 54 Standby control mechanism 55 Mechanism for superimposing a signal of a specific frequency or a specific voltage on a CDMA signal 61 Power supply control mechanism

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Claims (3)

(57) [Claims] 1. A method for performing digital communication with a server computer including indoor equipment comrades and an external provider using a general telephone line which is already installed indoors and includes one twisted wire, and communication with an exchange. Responsible for the digital service unit (DSU) and optical network unit (ON
U) a first CDMA communication device that modulates data of a digital / analog signal to the indoor side by a code division multi-access (CDMA) method and passes the indoor wiring, and second to second that exchanges the CDMA signal with the indoor wiring. N CDM
Each of the second to Nth CDMA communication devices has an A communication device and the received CDMA signal is demodulated into a conventional digital signal by the CDMA communication device and supplied to each device such as a personal computer or a telephone. The digital signal output from each device such as a telephone is converted into a second to Nth CDM.
A communication device outputs to the indoor wiring, and a single 2-wire twisted wire
-Multi-channel indoor data communication is performed between the Nth CDMA communication devices, and the first to Nth CDMA
The communication device is normally in the standby state, and the first CD
The MA communication device uses an external activation signal or indoor wiring C
The signal of a specific frequency or a specific voltage superimposed on the DMA signal is sensed to shift from the standby state to the operating state.
The Nth CDMA communication device has a function of detecting a signal of a specific frequency or a specific voltage superimposed on a CDMA signal of indoor wiring and shifting from a standby state to an operating state. Has a function of superimposing a signal for shifting the CDMA device from the standby state to the operating state on the CDMA signal of the indoor wiring, and further, the first CDMA communication device has a function of allocating the CDMA channel used by each CDMA communication device. An indoor wired communication method characterized by the above. 2. A method of performing digital communication with a server computer including indoor equipment comrades and an external provider by using a general telephone line which is already installed indoors and includes one twisted wire, and communication with an exchange. Responsible for the digital service unit (DSU) and optical network unit (ON
U) a first CDMA communication device that modulates data of a digital / analog signal to the indoor side by a code division multi-access (CDMA) method and passes the indoor wiring, and second to second that exchanges the CDMA signal with the indoor wiring. N CDM
Each of the second to Nth CDMA communication devices has an A communication device and the received CDMA signal is demodulated into a conventional digital signal by the CDMA communication device and supplied to each device such as a personal computer or a telephone. The digital signal output from each device such as a telephone is converted into a second to Nth CDM.
A communication device outputs to the indoor wiring, and a single 2-wire twisted wire
-Multi-channel indoor data communication is performed between the Nth CDMA communication devices, and the first to Nth CDMA
The communication device is normally in the standby state, and the first CD
The MA communication device uses an external activation signal or indoor wiring C
The signal of a specific frequency or a specific voltage superimposed on the DMA signal is sensed to shift from the standby state to the operating state.
The Nth CDMA communication device has a function of detecting a signal of a specific frequency or a specific voltage superimposed on a CDMA signal of indoor wiring and shifting from a standby state to an operating state. Has a function of superimposing a signal that shifts the CDMA device from the standby state to the operating state on the CDMA signal of the indoor wiring, and detects the channel used by each CDMA communication device in the indoor wiring, and the unused channel An indoor wired communication method characterized by having a function of allocating 3. A digital data transmitting / receiving unit for transmitting / receiving data to / from a DSU / ONU, computer, communication device, etc., and a CD for mutually converting digital data and CDMA signals.
It has a CDMA signal transmission / reception unit for performing multi-channel communication with the MA modulation / demodulation unit and another CDMA communication device using a CDMA signal, and detects a signal of a specific frequency or a specific voltage superimposed on the CDMA signal and from a standby state. A mechanism for transitioning to an operating state and a mechanism for superimposing a signal of a specific frequency or a specific voltage on a CDMA signal are provided in a CDMA communication device.
And the CDMA communication device is in a standby state
To supply data when transitioning from the
Indoors with a mechanism that supplies power to data and communication equipment
Line communication equipment.