KR0127250Y1 - Telephone with a loop-circuit self-diagnosis function - Google Patents

Abstract

The present invention is to diagnose whether the loop (LOOP) circuit that performs the interface function of the communication terminal input and output to and from the external terminal and the device, and whether the normal operation is normal, and displays the diagnosis result so that the user can know. A telephone, comprising: a function selection unit for selecting a self-diagnosis function, a call path connection unit for controlling whether a call path is connected according to a predetermined control signal, a trunk line connection detection unit for detecting a call path connection state, and a user When the self-diagnosis function is selected by pressing the function selection key, a loop control is output by the switching control signal based on a signal applied from the trunk line connection detection unit while outputting a predetermined switching control signal to the communication line connection unit. Characterized in that it is to determine whether formed.

Description

Telephone with LOOP circuit self-diagnosis

1 is a block diagram showing the internal configuration of a general telephone with a built-in microprocessor.

2 is a functional block diagram showing an internal configuration of a telephone having a self-diagnosis function of a loop (LOOP) circuit according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

A: Phone B: Extended Memory

1: trunk line connection terminal 2: ring signal detection unit

3: ring generator 4: loop circuit

5: handset 6: call path connection

7: network circuit 8: hook detection unit

10: display unit 11: memory

12,120: microprocessor 13,130: keypad

14: DTMF (Dual Tone Multi-Frequency) Generation Circuit

41: trunk line connection enclosure 42: interface circuit

51: the receiver 52: the receiver

101: light emitting display portion 102: display driver

The present invention relates to a telephone having a self-diagnosis function, and in particular, diagnoses itself whether the loop (LOOP) circuit that performs the interface function of the overall communication signal input / output to and from the counterpart terminal and the device itself is normally operated. The present invention relates to a phone configured to display a diagnosis result for a user to know.

The telephones, which are widely used throughout our living spaces, including homes and businesses, are the most basic necessities of modern people in the information age. Recently, the telephone function as a simple call device has been provided for this role. Increasingly, a variety of convenient functions have been added.

1 is a block diagram showing the internal structure of a general telephone with a built-in microprocessor. In the drawing, reference numeral 1 is a connection terminal for connecting an external trunk line, and reference number 2 is a talker through this trunk line connection terminal (1). A ring signal detecting unit for detecting a ring signal applied from the side station apparatus, 3 is a ring generating unit for outputting a telephone ringing to the receiver side based on the applied ring signal, 4 is a counterpart terminal (hereinafter referred to as a power station). "LOOP" circuit that performs the interface function of the entire communication signal input and output to and from the device, and the loop circuit 4 is a trunk line connection detecting unit for detecting a connection state with a large station. And an interface circuit 42 for performing an interface function of the signal between the device 41 and the device.

Further, reference numeral 5 denotes a handset, and 8 denotes a hook for detecting an ON or OFF state of a hook switch that is configured to be turned on / off when a user lifts or releases the telephone 5. HOOK) detection unit 6 is a call path connection unit for controlling whether or not to connect to the call path in accordance with a control signal from the microprocessor 12 to be described later.

Reference numeral 12 is a microprocessor for controlling the overall operation of the device based on the signal detected through the communication line connection unit 6 and the trunk line connection detection unit 41, and the like when the user lifts the handset 5 It detects through the hook detection part 8, and drives the said communication path | route connection part 6 ON to form a loop.

On the other hand, reference numeral 7 amplifies the voice signal of the sender applied from the power station and the user's voice signal applied from the handset 5 through the interface circuit 42 and the communication path connecting unit 6 to a predetermined level, as well as side sound. A network circuit for performing signal processing for side tone, etc., 10 is a display unit for informing a user of a current operation state of a telephone, and 11 is a memory for storing data necessary for operation of the telephone.

Reference numeral 13 denotes a keypad provided with numeric keys and function keys used for dialing or selecting a specific function by the user, and 14 denotes a microprocessor 12 for a predetermined key input entered through the keypad 13. The DTMF generation circuit outputs a DTMF (Dual Tone Multi-Frequency) signal corresponding to the control command.

That is, in the conventional general telephone having the above-described configuration, as the user presses a numeric key installed on the keypad 13 while holding the handset 5, the microprocessor 12 drives the DTMF generating circuit 14. On the contrary, when a call is received, the user picks up the handset 5 to turn on a hook switch (not shown), and thus, the microprocessor 12 that detects the handset connects to a call connection part ( By controlling the operation of 6), a series of loops are formed between the user and the correspondent and at the same time, the call is available.

On the other hand, the loop (LOOP) circuit as described above is to perform the interface function of the overall communication signal input and output to and from the device and the device, the circuit itself is old or electric If a part of the circuit is damaged due to a shock, there is a possibility that the connection state to the communication path is poor or the reception sensitivity is lowered due to noise or the like.

The present invention was devised in view of the above circumstances, and diagnoses itself whether the loop (LOOP) circuit, which performs the interface function of the overall communication signal input / output to / from the counterpart terminal and the device, operates normally. It is an object of the present invention to provide a telephone with a loop circuit self-diagnosis function to be displayed so that the user can know.

The telephone having a loop circuit self-diagnosis function according to the present invention for realizing the above object has a function selection unit for selecting a self-diagnosis function, a call path connection unit for controlling the connection of the call path according to a predetermined control signal, a call path A trunk line connection detection unit for detecting a connection state and a signal applied from the trunk line connection detection unit while outputting a predetermined switching control signal to the communication line connection unit when the user selects the self-diagnosis function by pressing the function selection key. On the basis of this it is characterized in that to determine whether the loop (LOOP) is formed by this switching control signal.

That is, according to the present invention having the above-described configuration, the phone itself can diagnose the operation state of the loop (LOOP) circuit as well as display the diagnosis result, so that the user can easily recognize whether the device is abnormal.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.

FIG. 2 is a functional block diagram showing an internal configuration of a telephone having a self-diagnostic function of a loop (LOOP) circuit according to an embodiment of the present invention, and the same reference for components that perform the same function as the configuration shown in FIG. The numbers will be omitted and the detailed description thereof will be omitted.

In FIG. 2, reference numeral 130 denotes a keypad provided with a function selection key (not shown) for selecting a self-diagnostic function, and 120 denotes a controller for controlling the entire apparatus based on a signal input through the keypad 130. The microprocessor 120 outputs a predetermined switching control signal to the communication line connection unit 6 when the user selects the self-diagnosis function by pressing a function selection key. On the basis of the signal applied from 41), it is checked whether or not a loop LOOP is formed by this switching control signal.

Next, the operation of the device having the above configuration will be described.

When the user presses a function selection key (not shown) installed in the keypad 130, the microprocessor 120 displays that the function selection key for self-diagnosis is pressed through the display unit 10. A predetermined switching control signal for diagnosing an operation state is output to the communication path connecting unit 6 side.

On the other hand, the communication line connection unit 6 receiving the switching control signal is turned on (ON) by the applied switching signal to form a series of loops (bar), the trunk line connection detection unit 41 After sensing, a high level detection signal is output to the microprocessor 120.

As a result, the microprocessor 120 diagnoses the operation state of the loop circuit 4 based on the level of the detection signal applied from the trunk line connection detecting unit 41, and thus, the microprocessor 120 detects a high state from the trunk line connection detecting unit 41. When a high level detection signal is input, a 'CORECT' message indicating that the operation state is normal is output through the display unit 10, and when the low level detection signal is applied, 'ERR' indicating abnormality. 'Will print a message.

That is, according to the above embodiment, it is self-diagnosing whether the LOOP circuit 4, which performs the interface function of the overall communication signal input / output to and from the counterpart terminal and the device, operates normally, and diagnoses the diagnosis result by the user. By displaying so that it can be seen, the user can easily check whether the loop circuit 4 is operating normally.

On the other hand, the present invention is not limited to the above embodiments and can be variously modified within the scope not departing from the technical gist of the present invention.

Claims (2)

A function selection unit for selecting a self-diagnosis function, a call path connection unit for controlling whether a call path is connected according to a predetermined control signal, a trunk line connection detection unit for detecting a call path connection state, and a user selecting the function selection key In the case of selecting the self-diagnosis function by pressing, it outputs a predetermined switching control signal to the communication line connecting part and confirms whether a loop is formed by the switching control signal based on the signal applied from the trunk line connection detecting part. A telephone with a loop circuit self-diagnosis function, characterized in that the. The display apparatus of claim 1, further comprising a display unit for displaying a diagnosis result for the loop circuit, wherein the controller is configured to drive the display unit based on a loop detection signal applied from the trunk line connection detection unit. Features a telephone with a loop circuit self-diagnosis.