JPH0666157U - Line switching device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To be able to perform delicate and reliable control of telecontrol devices with different incoming operations on the same line. [Configuration] The line switching device 1 includes a home telephone 2 and
A plurality of telecontrol devices 3 are connected.
The line switching device includes a pulse counting circuit 6 for counting the pulses of the received call signal, an automatic incoming relay 7 for performing an incoming call operation when a predetermined number of pulses are counted, and a public line side after the incoming call. D issued from the phone
A DTMF signal receiving circuit 8 that receives a control signal based on a TMF signal, and a storage circuit 9 that stores an ID number such as a personal identification number.
And a calling signal generation circuit 10 for generating a calling signal to the target telecontrol device 3 when the input ID number and the number of the storage circuit 9 match, and a line when the target telecontrol device 3 receives a call. A line switching circuit 11 for switching the circuit and a control circuit 12 for controlling these circuits are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for controlling a plurality of devices installed at remote locations using a public line.

[0002]

[Prior art]

 Conventionally, a device for controlling a plurality of devices installed in a remote place using a public line is connected to one telecontrol device by connecting a plurality of devices 1 to n as shown in FIG. However, these devices were controlled by the contact signal level.

Further, as shown in FIG. 3, a home telephone and a telecontrol device dedicated to each device for delicate control are connected to a public line in parallel by controlling a plurality of units 1 to n.

[0004]

[Problems to be solved by the device]

 In the telecontrol device shown in Fig. 2 above, when controlling multiple devices with one telecontrol device, the interface of each connected device is not necessarily the same, so the power supply is turned on by a contact signal. -It was impractical in that it could only control the off level and could not perform delicate control.

Further, when a home telephone and a telecontrol device dedicated to each device are connected in parallel to the public line shown in FIG. 3 in order to perform delicate control, only the telecontrol device that receives an incoming call quickly is used. A telecontrol device that has been activated and has a slow incoming operation cannot be activated. After all, even if multiple telecontrol devices are connected to the same line, only one telecontrol device can be controlled. It had the drawback that it could only control other devices.

[0006]

SUMMARY OF THE INVENTION In view of the problems of the above-described conventional apparatus for controlling a plurality of devices installed in a remote place by using a public line, the present invention provides a telecontrol with different incoming operation. The purpose of this system is to enable delicate and reliable control of equipment on the same line, and the configuration is such that the telecontrol equipment can be controlled by controlling multiple telecontrol equipment connected to the same line using public lines. A device for switching a plurality of lines to which the above-mentioned telecontrol device is connected in order to control a connected device, and when the call signal is input to the device from a telephone on the public line side, An incoming call detection circuit that detects incoming calls when raised, a ringing signal reception circuit that receives a ringing signal when the handset does not lift the handset even when the home telephone rings, and a received call Based on the pulse counting circuit that counts the pulse of the outgoing signal, the automatic incoming relay that performs the incoming call operation when a predetermined number of pulses are counted, and the DTMF signal that is issued from the telephone on the public line side after the incoming call. A DTMF signal receiving circuit for receiving a control signal, a memory circuit for storing an ID number such as a personal identification number, and a calling signal for the target telecontrol device when the input ID number and the number of the memory circuit match. It is provided with a call-out signal generating circuit for generating a signal, a line switching circuit for switching a line when a target telecontrol device receives a call, and a control circuit for controlling these circuits.

[0007]

[Action]

 When a call signal is input to the line switching device from a telephone on the public line side, the home telephone rings to notify the call. At this time, when the handset is lifted, the incoming call detector detects the incoming call and disconnects the line switching device from the line to which the telecontrol device is connected. If the handset does not lift the handset even if it rings, the pulse counting circuit counts the ringing signals received by the ringing signal receiving circuit, and if a predetermined number of pulses are counted, the automatic call relay To perform the incoming call operation. After receiving the incoming call, the DTMF signal receiving circuit operates and waits for the input of the ID number such as a personal identification number and the device number of the telecontrol device to be controlled. If the entered number is different from the memory circuit number, the automatic call relay is turned off and the public line is disconnected. When the input number matches the number in the memory circuit, a call signal is generated from the call signal generation circuit to the target telecontrol device, and when the target telecontrol device receives a call, the line switching circuit switches the line and the Control becomes possible.

[0008]

【Example】

 FIG. 1 shows an embodiment of a line switching device according to the present invention. The present invention will be described below with reference to the drawings.

A home telephone 2 and a plurality of telecontrol devices 1 to n are connected to the line switching device 1 connected to the public line. In the line switching device 1, when a call signal is input from a telephone on the public line side, an incoming call detection circuit 4 detects an incoming call when the handset is lifted, and a call is made when the home phone 2 does not lift the handset even when it rings. A calling signal receiving circuit 5 for receiving a signal, a pulse counting circuit 6 for counting the pulses of the received calling signal, an automatic incoming relay 7 for performing an incoming call operation when a predetermined number of pulses are counted, DTMF signal receiving circuit 8 for receiving a control signal by a DTMF signal transmitted from a telephone on the public line side after an incoming call, a storage circuit 9 for storing an ID number such as a personal identification number, an input ID number and a number of the storage circuit 9 And the target telecontrol device 3 for generating a calling signal to the target telecontrol device 3 when Includes when the device 3 to Shin wearing the line switching circuit 11 for switching the line, and a control circuit 12 for controlling these circuits.

When a call signal is input to the line switching device 1 from a telephone on the public line side, the home telephone 2 rings to notify the call. At this time, when the handset is lifted, the incoming call detection circuit 4 detects an incoming call and disconnects the line switching device 1 from the line to which the telecontrol device 3 is connected. Even if the home telephone 2 rings, if the handset is not picked up, the call signal received by the call signal receiving circuit 5 is counted by the pulse counting circuit 6, and if a predetermined number of pulses are counted, The automatic incoming call relay 7 is operated to perform the incoming call operation. After the incoming call, the DTMF signal receiving circuit 8 operates and waits for the input of the ID number such as a personal identification number and the device number of the telecontrol device 3 to be controlled. If the entered ID number is different from the number stored in the memory circuit 9, the automatic call relay 7 is turned off and the public line is disconnected. When the input ID number matches the number in the memory circuit 9, a call signal is generated from the call signal generation circuit 10 to the target telecontrol device 3, and when the target telecontrol device 3 receives a call, the line switching circuit 11 switches the line, and telecontrol is possible. Each circuit is controlled by the control circuit 12.

[0011]

[Effect of device]

 As described above, according to the present invention, in order to control a device connected to a telecontrol device by controlling a plurality of telecontrol devices connected to the same line using a public line, the telecontrol device is provided. A device for switching a plurality of connected lines. When a call signal is input to the device from a telephone on the public line side, the incoming call detection circuit that detects an incoming call when the handset is lifted, and the home telephone are A ringing signal reception circuit that receives a ringing signal when the handset does not pick up even when ringing, a pulse counting circuit that counts the pulses of the received ringing signal, and an incoming call when a predetermined number of pulses are counted. DT MF signal reception time that receives the automatic incoming call relay that operates and the control signal by the DTMF signal that is issued from the public line side telephone after the incoming call And a storage circuit for storing an ID number such as a personal identification number, and a calling signal generation circuit for generating a calling signal to a target telecontrol device when the input ID number and the number of the storage circuit match. By providing a line switching circuit that switches lines when a target telecontrol device receives a call and a control circuit that controls these circuits, it is possible to control a plurality of telecontrol devices with different incoming operations on the same public line. There is an effect that it can be done delicately and surely. Further, since the line switching device receives the call before the telecontrol device receives the call, it is possible to prevent the malfunction of the telecontrol device due to mischief or a wrong call.

[Brief description of drawings]

FIG. 1 is a block diagram of a line switching device according to the present invention.

FIG. 2 is a block diagram of a device for controlling a plurality of devices installed in a remote place using a conventional public line.

FIG. 3 is a block diagram of another embodiment of a device for controlling a plurality of devices installed in a remote place using a conventional public line.

[Explanation of symbols]

1 ... Line switching device, 2 ... Home telephone, 3.
..Telecontrol devices, 4 ... Incoming call detection circuits, 5
... Call signal receiving circuit, 6 ... Pulse counting circuit, 7 ... Automatic incoming relay, 8 ... DTMF signal receiving circuit, 9 ... Memory circuit, 10 ... Call signal generating circuit, 11 ... Line switching circuit, 12 ... Control circuit.

Claims (1)

[Scope of utility model registration request] 1. A plurality of telecontrol devices connected to the telecontrol device for controlling a device connected to the telecontrol device by controlling a plurality of telecontrol devices connected to the same line using a public line. This is a device for switching lines, and when a call signal is input from the telephone on the public line side to the device, an incoming call detection circuit that detects an incoming call when the handset is lifted, and the handset is lifted even if the home telephone rings A ringing signal receiving circuit that receives a ringing signal when there is no ringing signal, a pulse counting circuit that counts the pulses of the received ringing signal, and an automatic incoming relay that performs an incoming call operation when a predetermined number of pulses are counted. , DTM issued from the telephone of the public line after receiving the call
A DTMF signal receiving circuit for receiving a control signal by an F signal, a memory circuit for storing an ID number such as a personal identification number, and a target telecontrol device when the input ID number and the number of the memory circuit match. A line switching device comprising: a calling signal generating circuit for generating a calling signal, a line switching circuit for switching a line when a target telecontrol device receives a call, and a control circuit for controlling these circuits.