JPH10290253A - Multi-port repeater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-port repeater capable of executing the ON/OFF control of a power supply without direct operation of a power switch by the user and preventing undesired power from being consumed. SOLUTION: This repeater is provided with a link pulse detection section that detects a link pulse signal sent from pluralities of devices and with a power supply control circuit section 15 that controls a power supply of the multi-port repeater 10 to be active when number of link pulse signals detected by the link pulse detection section is two or over and controls the power supply of the multi-port repeater 10 to be inactive when number of link pulse signals detected by the link pulse detection section is less than two, and then the power supply for the multi-port repeater 10 is automatically on/off-controlled depending on number of connected devices.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IEEE 802.3 10BASE system using a twisted pair cable without a shield as a transmission medium.
The present invention relates to a multi-port repeater device having a plurality of connection ports used for concentrating a plurality of devices constituting the star-type LAN in T-T and 100BASE-T (star-type LAN).

[0002]

2. Description of the Related Art Conventionally, in a star LAN constructed by organically connecting a plurality of devices via a digital private branch exchange, a plurality of devices constituting the star LAN are connected. Although a multi-port repeater device having a plurality of ports is used in the conventional multi-port repeater device, since the conventional multi-port repeater device operates by being supplied with power from the outside, the power on / off control of the multi-port repeater device is controlled. Is performed by directly operating a power switch of the multiport repeater, or by directly plugging and unplugging a power cable in a multiport repeater device having no power switch.

[0003]

In the conventional multiport repeater device as described above, the power on / off control is performed by the user directly operating the power switch of the multiport repeater device. When the user operates the power switch, all the devices connected to the multi-port repeater device are set to L.
Since it is necessary to confirm that the connection of the AN has been completed and then operate the power switch, there is a problem that the operation becomes complicated.

[0004] Further, depending on the installation environment of the multiport repeater device (for example, an upper part of a pillar, an upper part of a wall, or a place behind a ceiling, which is normally out of reach), it is very difficult for a user to directly perform power operation. There is also a problem that it becomes.

Further, in a multiport repeater device not equipped with a power switch, although the above-mentioned problem is solved, unnecessary power is consumed because the device is always energized. There is a point.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a power ON / OFF operation without a user directly operating a power switch.
It is an object of the present invention to provide a multiport repeater device in which control is performed and unnecessary power is not consumed.

[0007]

In order to achieve the above object, the present invention provides a star-type L which is constructed by organically connecting a plurality of devices via a digital private branch exchange.
In the AN, in a multi-port repeater device for concentrating the plurality of devices, a connection port unit connected to the plurality of devices via a cable and the plurality of devices via the connection port unit An analog circuit unit that performs analog processing of a signal that is transmitted and received, a repeater control unit that performs processing of a signal that is transmitted and received between the plurality of devices via the connection port unit, and a signal that is transmitted from the plurality of devices. A link pulse detector for detecting an incoming link pulse signal;
The power of the multi-port repeater is turned on based on the detection result of the link pulse signal in the link pulse detection unit.
And a power supply control circuit for performing / OFF control.

[0008] The power supply control circuit section may turn off the power of the multiport repeater device when the number of link pulse signals detected by the link pulse detection section is two or more.
The multi-port repeater device is controlled so as to be in the N state, and when the number of link pulse signals detected by the link pulse detection unit is less than 2, the power of the multiport repeater device is controlled to be in the OFF state.

(Operation) In the present invention configured as described above, the link pulse detecting section detects link pulse signals transmitted from a plurality of devices, and the power supply control circuit section executes the link pulse detecting section. When the number of detected link pulse signals is two or more, the power of the multi-port repeater device is controlled to be in an ON state, and when the number of link pulse signals detected by the link pulse detection unit is less than two, the multi-port repeater is controlled. Control is performed so that the power of the port repeater device is turned off.

Thus, the power of the multi-port repeater is automatically turned on / off based on the number of connected devices.
Since the FF control is performed, the power ON / OFF control is performed without the user directly operating the power switch.
Unnecessary power is not consumed in the multiport repeater device.

[0011]

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

FIG. 1 is a block diagram showing an embodiment of a multiport repeater according to the present invention.

In this embodiment, as shown in FIG.
A connection port 13 connected to a plurality of devices (not shown) constituting N via a cable (not shown), and analog processing of signals transmitted and received between the devices via the connection port 13 An analog circuit unit 12 for performing processing, a repeater control unit 11 for processing signals transmitted / received to / from each device via the connection port unit 13, and a link pulse for detecting a link pulse signal transmitted from each device Detector 14
And a power supply control circuit unit 15 that performs ON / OFF control of the power supply of the multiport repeater device 10 based on the detection result of the link pulse signal by the link pulse detection unit 14.

Hereinafter, the operation of the multi-port repeater 10 configured as described above will be described.

FIG. 2 is a diagram showing an example of a link pulse signal transmitted and received between the multiport repeater device 10 shown in FIG. 1 and the terminal device 20 connected to the multiport repeater device 10, and FIG. 4 is a flowchart showing power ON / OFF control in the multiport repeater device 10 shown in FIG.

As shown in FIG. 2, between the multiport repeater device 10 and the terminal device 20 connected to the multiport repeater device 10 in the star type LAN, the IEEE 802.3 standard is used in order to confirm the mutual connection. Is transmitted and received.
In the multiport repeater device 10, the terminal device 20
By detecting the link pulse signal transmitted from the multiport repeater device 10 in the terminal device 20, the physical connection with each other is confirmed by detecting the link pulse signal transmitted from the multiport repeater device 10.

First, the operation when the power of the multi-port repeater device 10 is ON will be described.

In the link pulse detector 14, a link pulse signal transmitted from a device connected to the cable in the RX of the connection port 13 is constantly monitored. It is detected whether or not a link pulse signal is received at the connection port (step S1).

If it is detected in step S1 that a link pulse signal has been received at two or more connection ports, the fact is transmitted to the power supply control circuit unit 15 so that the power supply control unit 15 Is controlled so that the power of the multi-port repeater device 10 is continuously turned on (step S2).

On the other hand, if the reception of the link pulse signal at two or more connection ports is not detected in step S1, the fact is transmitted to the power supply control circuit unit 15,
As a result, the power supply control circuit 15 is controlled so that the power supplies other than the link pulse detector 14 of the multiport repeater device 10 are turned off (step S).
3).

Next, the operation when the power of the multiport repeater device 10 is off will be described.

When the power of the multiport repeater 10 is
Even in the FF state, the link pulse detector 1
Only the power supply of the connection port 13 is turned on in the link pulse detection unit 14.
The link pulse signal transmitted from the device connected to the cable at X is constantly monitored, and it is detected whether the link pulse signal is received at two or more connection ports out of the RX of the connection port unit 13. Is performed (step S1).

If it is detected in step S1 that a link pulse signal has been received at two or more connection ports, the fact is transmitted to the power supply control circuit unit 15 so that the power supply control unit 15 Is controlled so that the power of the multiport repeater device 10 is turned on (step S2).

On the other hand, if the reception of the link pulse signal at two or more connection ports is not detected in step S1, the fact is transmitted to the power supply control circuit unit 15,
As a result, the power supply control circuit unit 15 controls so that the power supplies other than the link pulse detection unit 14 of the multiport repeater device 10 are continuously turned off (step S3).

The above-described series of operations are repeatedly performed, and the power of the multi-port repeater device 10 is turned on at any time based on the detection result of the link pulse detection unit 14.
/ OFF control is being performed.

In this embodiment, the connection port 1
3 is controlled so that the power of the multi-port repeater apparatus 10 is turned on when the link pulse signal detected at 3 or more is two or more, and is turned off when the link pulse signal is less than two ports. Even if only one device is connected to the port repeater device 10,
This is because it is not necessary to operate the multiport repeater device 10 because there is no device that communicates with the device.

[0027]

As described above, in the present invention,
A link pulse detection unit that detects link pulse signals transmitted from a plurality of devices, and a power supply of the multiport repeater device is turned on when the number of link pulse signals detected by the link pulse detection unit is two or more. And a power supply control circuit for controlling the power of the multiport repeater device to be in an OFF state when the number of link pulse signals detected by the link pulse detection unit is less than two. Automatically turns on / off the multi-port repeater device based on the number of devices
F control can be performed, whereby the user can perform power ON / OFF control without directly operating the power switch, and can suppress unnecessary power consumption in the multiport repeater device. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a multiport repeater device of the present invention.

FIG. 2 is a diagram illustrating an example of a link pulse signal transmitted and received between the multiport repeater device illustrated in FIG. 1 and a terminal device connected to the multiport repeater device.

FIG. 3 is a flowchart showing power ON / OFF control in the multiport repeater device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Multiport repeater apparatus 11 Repeater control part 12 Connection port part 13 Analog circuit part 14 Link pulse detection part 15 Power supply control circuit part 20 Terminal device

Claims (2)

[Claims] 1. A multi-port repeater device for concentrating a plurality of devices in a star-type LAN constructed by organically connecting a plurality of devices via a digital private branch exchange, A connection port unit connected to a device via a cable, an analog circuit unit that performs analog processing of signals transmitted and received between the plurality of devices via the connection port unit, and A repeater control unit that processes signals transmitted and received between the plurality of devices; a link pulse detection unit that detects link pulse signals transmitted from the plurality of devices; and a link in the link pulse detection unit. Turn on the power of the multiport repeater device based on the detection result of the pulse signal
A multi-port repeater device having a power control circuit unit for performing / OFF control. 2. The multi-port repeater device according to claim 1, wherein the power supply control circuit unit supplies power to the multi-port repeater device when the number of link pulse signals detected by the link pulse detection unit is two or more. Is controlled to be in an ON state, and when the number of link pulse signals detected by the link pulse detection unit is less than 2, control is performed so that the power of the multiport repeater device is turned off. Multiport repeater device.