KR950010481B1 - A hold-recall display device in the 2-line phone - Google Patents

Abstract

The method comprises the steps of checking whether a command for holding a first line is applied or not; checking whether a command for holding a second line is applied or not; checking whether the first line is cancelled from holding state; setting a first line hold flag; checking whether the second line is cancelled from holding state; setting the second line hold flag; checking whether or not the first and second line hold flags are set together; feeding back to the first step; checking whether or not the first line hold flag is set when the first and second hold flags are not set together; feeding back to the first step; checking whether or not the second line hold flag is set if the first line hold flag is not set at step 9; feeding back to the first step after generating a beep sound; and feeding back to the first step if the second line hold flag is not set at step 11.

Description

Method and device for holding call of 2-line telephone

1 is a block diagram of a hold call display device according to the present invention.

2 is a detailed circuit diagram of the hold and release unit of FIG.

3 is a schematic diagram of a hold call display state format according to the present invention.

4 is a flowchart showing a hold call display process according to the present invention.

* Explanation of symbols for main parts of the drawings

6: display unit 11, 12: hold and release

61, 62: display format

The present invention relates to a two-line telephone, and in particular, a hold call display of a two-line telephone to notify a user of a two-year hold situation when a call is connected to a two-line lead or one of two lines. A method and apparatus are disclosed.

In a conventional two-line telephone, when a call is connected to both lines or a call is connected to one of the two lines to hold the corresponding line, the user does not know the hold status of the line. Nevertheless, there was a problem that can not respond quickly to the line of the hold state because it is not aware of the situation.

The present invention has been made to solve this problem, and when a certain time has elapsed after the line is held in a two-line phone, the line hold situation can be visually checked and at the same time by outputting a beep sound (Beep Sound) It is an object of the present invention to provide a method and a device for displaying a hold call of a two-line telephone to confirm a corresponding line hold situation to a user to increase the convenience of using a two-line telephone.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a hold call display device for a two-line telephone according to the present invention includes ringer portions 1 and 2 and bridge circuits BD ₁ and BD ₂ respectively provided in lines 1 and 2, respectively. In response to the holding signals Hold1 and Hold2 from the microcomputer control unit 5, each line is held and the holding release state of each line is checked, and the release signal Hold Rel 1 is held in the microcomputer control unit 5 (Hold Rel 2). Hold and hold release unit (11) (12) for sending a), a loop control unit (3) which connects lines 1 and 2 by a microcomputer control unit 5 command to form a call loop, and the loop control unit (3) In response to the control signal MT of the microcomputer control unit 5 to transmit the tone TN from the microcomputer control unit 5 to the lines 1 and 2 via the loop control unit 3, and the handset (not shown in the drawing). Call unit 4 for transmitting and receiving a voice call signal input and output to the speaker and outputs a beep sound (BP) to the speaker, and a keypad (not shown in the drawing) The microcomputer control unit 5 which controls the line hold operation according to the hold command and controls the hold call display operation, and the data sent from the microcomputer control unit 5 are displayed on the LCD module. And a display unit 6 for allowing the user to know the hold call condition of 2, and a switch unit 7 for selectively connecting lines 1 and 2 to the loop control unit 3 side.

Each of the hold and hold header portions 11 and 12 is a photocoupler PC which is turned on / off by a hold signal Hold 1 and Hold 2 which are transmitted from the microcomputer control unit 5 as shown in FIG. ₂ ), a silicon controlled rectifier (SCR) controlled on / off in accordance with the output of the photocoupler PC ₂ and a conduction state of the SCR are detected and held by the microcomputer control unit 5 (Hold Rel 1) ( It consists of a photo coupler (PC ₁ ) and its peripheral circuit for sending Hold Rel 2).

On the other hand, the hold call display device of the two-line telephone as described above has a hold state display format for line 1 when the first line is held, as shown in FIG. 3 when the first line is held. When 61 is displayed for a predetermined time and the second line is held, the hold state display format 62 for line 2 is displayed for a predetermined time, and the first and second lines are held. Thereafter, the hold state display format 61 for the line 1 and the hold state display format 62 for the line 2 are alternately displayed for a predetermined time, and the display formats 61 and 62 are held states of the lines 1 and 2. It displays text information that informs you and text information that informs you of the call time.

Such a hold call display device of the present invention performs operations in the order shown in FIG.

First, the microcomputer control unit 5 inputs a command to hold the line 1 from the keypad, and outputs a hold signal Hold 1 to the hold and hold release unit 11 by the hold and hold release unit 11. When the line 1 is held (step 41), the hold release signal Hold Rel 1 of the line 1 applied from the hold and hold release unit 11 is read to check whether the line 1 is released within a predetermined time. In step 42, if the line 1 is not released within the predetermined time, the microcomputer control unit 5 sets the line 1 hold flag (step 43) and then proceeds to step 47 to perform the operation. If the line 1 is released within a predetermined time, the process immediately proceeds to step 47. In addition, the microcomputer control unit 5 receives a command for instructing to hold the line 2 from the keypad, and the hold and release release unit 12 is input. Hold by outputting hold signal (Hold 2) And when the line 2 is held by the hold release unit 12 (step 44), the hold release signal Hold Rel 2 of the line 2 applied from the hold and hold release unit 12 is read, and the line 2 is read within the predetermined time. (Step 45), the microcomputer control unit 5 sets the line 2 hold flag if the line 2 is not released within the predetermined time (step 46). Go to perform the operation, and if the line 2 is released within a predetermined time, go to step 47 immediately to perform the operations. Further, the microcomputer control unit 5 receives a command instructing to hold the line 2 from the keypad in step 44. If not, go directly to Step 47 and perform the operation. Then, the microcomputer control 5 checks whether the lines 1 and 2 hold flags are set together (step 47), and the lines 1 and 2 hold flags are set together. If there is, through the call circuit unit 4 It outputs the tone BP to inform the user that the lines 1 and 2 are held, and at the same time, the hold state display format 61 for line 1 and the hold state display format for line 2 in the same form as the third (c) diagram. After alternately displaying 62 on the display unit 6 for a predetermined time (step 48), the flow returns to step 41, and if the line 1 and 2 hold flags are not set together, whether the line 1 hold flag is set or not. (Step 49). In this step 49, if the line 1 hold flag is set, the microcomputer control unit 5 outputs a beep sound through the call circuit unit 4 to inform the user that the line 1 is held, and at the same time the third (a) In the same manner as shown in the figure, after the hold state display format 61 for the line 1 is displayed on the display unit 6 for a predetermined time (step 50), the flow returns to step 41, and if the line 1 hold flag is not set, the line 2 It is checked whether or not the hold flag is set (step 51). In this step 51, when the line 2 hold flag is set, the microcomputer control unit 5 outputs a beep sound BP through the call circuit unit 4 to inform the user that the line 2 is held, and at the same time, the third (b) In the same manner as shown in the figure, after the hold state display format 62 for the line 2 is displayed on the display unit 6 for a predetermined time (step 52), the flow returns to step 41, and if the line 2 hold flag is not set, the step is immediately performed. Return to 41.

Referring to the operation and effect of the present invention in more detail as follows.

First, when a command for instructing to hold the line 1 is input from the keypad, the microcomputer control unit 5 outputs a hold signal Hold 1 in a logic " 1 " state to the hold and release release unit l1, and at this time, hold And the photo coupler PC ₂ of the hold release unit 11 is turned on to apply a high state signal to the gate of the SCR. Accordingly, the SCR is turned on to hold the line 1. As a result, the photocoupler PC ₁ is turned on to output the hold release signal Hold Rel1 having a logic " 0 " state to the micom control section 5, and the microcomputer control section 5 from the hold and hold release circuit 11. If the applied hold release signal Hold Rel 1 is kept in a logic " 0 " state for a predetermined time, line 1 is held through the display 6 to a hold state display format 61 such as a third (a) degree. It indicates for a predetermined time and outputs a beep sound (BP) through the call circuit unit 4 to warn the user.

In addition, when a command for instructing to hold the line 2 is input from the keypad, the microcomputer control unit 5 outputs a hold signal Hold 2 in a logic " 1 " state to the hold and release release unit 12, and at this time, hold And the photo coupler PC ₂ of the hold release unit 12 is turned on to apply a high state signal to the gate of the SCR. Accordingly, the SCR is turned on to hold the line 2. Accordingly, the photocoupler PC ₁ is turned on to output the hold release signal Hold Rel 2 having a logic " 0 " state to the micom control section 5, and the microcomputer control section 5 holds and releases the hold release section 12. If the hold release signal Hold Rel 2 applied from the logic " 0 " state continues for a predetermined time, the line 2 goes to the hold state sign format 62 as shown in the third (b) diagram through the display unit 6; It indicates that it is held for a predetermined time and outputs a beep sound (BP) through the call circuit unit 4 to warn the user.

The microcomputer control unit 5 holds and releases the hold signals Hold 1 and Hold 2 in a logic " 1 " state when a command for instructing to hold the lines 1 and 2 from the keypad is input. 12), and the photocoupler PC ₂ of the hold and hold release portions 11 and 12 is turned on to apply a high signal to the gate of the SCR, thereby holding and hold release portion 11. 12) is turned on to hold line 1 and line 2. Accordingly, the photo coupler PC ₁ of the hold and hold release units 11 and 12 is turned on and outputs hold release signals Hold Rel 1 and Hold Rel 2 in a logic " 0 " state to the microcomputer control unit 5 side. If the hold release signals Hold Rel 1 and Hold Rel 2 applied from the hold and hold release units 11 and 12 continue to pass for a predetermined time, the microcomputer control unit 5 displays the display unit ( 6) through the call circuit unit 4, and outputting the holding state display format (61, 62) alternately repeatedly as shown in the third (c) diagram to indicate that the line 1 and the line 2 is held for a predetermined time. A beep sound is output to warn the user.

As described above, the present invention informs the user of the holding status of the corresponding line when both lines are held or one of the two lines is held in the telephone using two lines, so that the user can use the two-line telephone more conveniently. Can be used.

Claims (2)

In the method of displaying a hold call of a two-line telephone, a first step of confirming whether or not a command instructing to hold the first line is applied, and the command instructing to hold the first line in the first step is provided. A second step of confirming whether or not a command indicating to hold a second line is applied if not applied; if the command indicating to hold the first line is applied in the first step, the first line is held; A third step of confirming whether or not the first line is released within a predetermined time; a fourth step of setting a first line hold flag when the first line is not released within a predetermined time in the third step; If a command instructing to hold the second line is applied in step 2, the second line is held and the second line is checked whether the second line is released within a predetermined time. Is a fifth step, the sixth step of setting the second line hold flag when the second line is not released within a predetermined time in the fifth step, and the command instructing to hold the second line in the second step is When not applied, when the second line is released within a predetermined time in the fifth step, when the first line is released within a predetermined time in the third step, when the operation of the fourth step is performed or In the case where the operation of the sixth step is performed, the seventh step of checking whether the hold flags are set together with the first and second lines, and the first and second line hold flags are set together in the seventh step. If present, the hold state of the first and second lines are alternately displayed for a predetermined time and displayed for visual confirmation. In the eighth step, the ninth step of checking whether the first line hold flag is set when the first and second line hold flags are not set together in the seventh step, and the ninth step in the ninth step, In the case where the one-line hold flag is set, the tenth and nineth steps of displaying the hold state of the first line for a predetermined time and simultaneously returning to the first step after generating a beep sound When the first line hold flag is not set, an eleventh step of checking whether the second line hold flag is set or a second line hold flag is set when the second line hold flag is set in the eleventh step. In the twelfth step and the eleventh stage of displaying a visual display for a predetermined time and returning to the first step after generating a beep sound. If the second line-hold flag is not set, the hold recall display method of the claim 2, characterized in that it comprises a first step 13 which returns to the step 1-line telephones. First and second ringers 1 and 2 for generating rings in accordance with ring signals applied from each of the first and second lines; First and second bridge circuits BD1 and BD2 for transmitting a signal applied from each of the first and second lines; In a two-line telephone having a loop control section (3) for forming a call loop in accordance with a control signal and a switch section (7) for selectively connecting the first and second lines to the loop control section (3), Connected between the first bridge circuit BD1 and the switch unit 7 to hold the first line in accordance with the first hold signal Hold1, and when the first line is released, the first hold release signal Hold A first hold and hold release section 11 for outputting Rel 1); Connected between the second bridge circuit BD2 and the switch unit 7 to hold the second line according to the second hold signal Hold 2, and when the second line is released, the second hold release signal ( A second hold and hold release section 12 for outputting Hold Rel 2); Controlling the operation of the loop control unit 3 by outputting a control signal to the loop control unit 3 side, and the first and second hold according to a command instructing to hold the first and second lines applied from the keypad. And a first hold signal Hold1 and a second hold signal Hold2, which are output from the hold release parts 11 and 12 and applied from the first, second hold and hold release parts 11 and 12. Check the states of the 1st release signal Hold Rel 1 and the 2nd release signal Hold Rel 2 to determine which line is not released when there is an unreleased line among the first and second lines. And a microcomputer control unit (5) which displays on the display unit (6) and outputs a beep sound through the call circuit unit (4).