KR0127249Y1 - Telephone with a network circuit self-diagnosis function - Google Patents

Abstract

The present invention relates to a telephone which is configured to diagnose whether a network circuit that performs amplification and level adjustment function of an audio signal is operating normally, and to display the diagnosis result so that the user can know. A telephone having a control unit for controlling the entire apparatus based on an input, and a network circuit for performing signal processing such as level adjustment on an audio signal input / output through a trunk line; A function selection unit for selecting a self-diagnosis function, a level comparison unit for outputting a predetermined detection signal when the level of the audio signal output from the network circuit does not match with a predetermined reference level, and the network And a display unit for displaying a diagnosis result for a circuit, wherein the controller outputs a test pulse of a predetermined level to the network circuit when the user selects a self-diagnosis function through the function selection unit. In addition, the display unit may be driven to control the display unit based on a detection signal input from the level comparison unit by the test pulse.

Description

Phone with network 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 network circuit self-diagnosis function 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

20: level comparison unit 21: first level comparator

22: second level comparator 23: third level comparator

41: trunk line connection detection unit 42: interface circuit

51: the receiver 52: the receiver

101: light emitting display portion 102: display driver

The present invention relates to a phone having a self-diagnosis function. In particular, the present invention diagnoses itself as a network circuit that performs amplification and level adjustment of an audio signal, so that a user can know the diagnosis result. It is about the telephone which was supposed to display.

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 caller through this trunk line connection terminal (1). A ring signal detecting unit for sensing 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 large station) (LOOP) circuit that performs the interface function of the overall communication signal input and output into and out of the device, and the loop circuit 4 is a trunk line connection detection unit for detecting the connection state with the power 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 to the predetermined level via the interface circuit 42 and the communication path connecting unit 6 as well as the side tone. 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, the microprocessor 12 floats the DTMF generation circuit 14 as the user presses a numeric key installed on the keypad 13 while the user picks up the handset 5. 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, as described above, the network circuit 7 performs the amplification and level adjustment functions for the voice signal applied from the sender side and the user's own voice signal. In addition, the network of the DTMF generation circuit 14 It is involved in the overall signal processing inside the phone such as adjusting the output level.If the circuit itself is old or part of the circuit is damaged by electric shock, the other party's voice is not heard well or the sound quality is poor. There is a fear that the reception sensitivity is reduced.

The present invention has been devised in view of the above circumstances, and diagnoses itself whether a network circuit that performs amplification and level adjustment of an audio signal is operating normally, and displays the diagnosis result so that the user can know. It is an object of the present invention to provide a telephone with a self-diagnosis function of a network circuit.

A telephone having a network circuit self-diagnosis function according to the present invention for realizing the above object includes a control unit for controlling the entire apparatus based on a user's key input, and a signal such as level adjustment for a voice signal input / output through a trunk line. A telephone having a network circuit for performing a process; A function selection unit for selecting a self-diagnosis function, a level comparison unit for outputting a predetermined detection signal when the level of the audio signal output from the network circuit does not match with a predetermined reference level, and the network And a display unit for displaying a diagnosis result for a circuit, wherein the controller outputs a test pulse of a predetermined level to the network circuit when the user selects a self-diagnosis function through the function selection unit. In addition, the display unit may be driven to control the display unit based on a detection signal input from the level comparison unit by the test pulse.

That is, according to the present invention having the above-described configuration, the phone itself can diagnose the operation state of the network 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.

2 is a block diagram showing the internal configuration of a telephone with a self-diagnosis function according to an embodiment of the present invention, the same reference numerals are assigned to the components performing the same function as the configuration shown in FIG. The description 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 test pulse of a predetermined level to the network circuit 7 connected to the rear stage when the user selects the self-diagnosis function by pressing the function selection key. do.

On the other hand, the reference numeral 20 receives a transmission tone (TX), a reception tone (RX), and a side tone (ST) output from the network circuit 7 and compares the result with each reference level to compare the result of the micro A level comparator configured to output to the processor 120 side, wherein the level comparator 20 is a first level comparator for comparing the transmission sound (TX) level and a second level comparator for comparing the reception sound (RX) level. And a third level comparator for comparing the side sound (ST) levels.

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. The test pulse of a predetermined level for operating condition diagnosis is output to the network arc 7 side.

Meanwhile, the network circuit 7 receiving the test pulse processes and outputs signals for the transmission sound TX, the reception sound RX, and the side sound ST based on the applied pulse. The signal output through the level comparison unit 20 is compared with the reference level for each.

The level comparator 20 outputs each comparison result to the corresponding terminals D1, D2, and D3 of the microprocessor 120. For example, the signal level output from the network circuit 7 is equal to the reference level. Only when they do not match, the microprocessor 120 outputs a high level detection signal to the corresponding detection terminals D1, D2, and D3.

As a result, the microprocessor 120 diagnoses an operation state of the network circuit 7 based on the level of the detection signal applied from the level comparator 20. ) When the detection signal of the level is input, a 'CORRECT' message indicating that the operation state is normal is output through the display unit 10, and 'ERR' indicating that it is abnormal when a high level detection signal is applied. Will print a message.

That is, according to the above embodiment, the network circuit for performing amplification and level adjustment functions of the audio signal is self-diagnosed, and the diagnosis result is displayed so that the user can know. It is easy to check whether the network circuit 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 telephone having a control unit for controlling the entire apparatus based on a key input of a user, and a network circuit for performing signal processing such as level adjustment on an audio signal input and output through a trunk line; A function selection unit for selecting a self-diagnosis function, a level comparison unit for outputting a predetermined detection signal when the level of the audio signal output from the network circuit does not match with a predetermined reference level, and the network And a display unit for displaying a diagnosis result for a circuit, wherein the controller outputs a test pulse of a predetermined level to the network circuit when the user selects a self-diagnosis function through the function selection unit. And a driving circuit for controlling the display unit on the basis of a detection signal inputted from the level comparison unit by the test pulse. The apparatus of claim 1, wherein the level comparator comprises: a first level comparator for comparing a transmission sound (TX) level, a second level comparator for comparing a reception sound (RX) level, and a side sound (ST) level. A telephone having a network circuit self-diagnosis function comprising a third level comparator.