KR920001907A - Automatic switching circuit of facsimile and its control method - Google Patents

Abstract

No content

Description

Automatic switching circuit of facsimile and its control method

As this is a public information case, the full text was not included.

3 is a circuit diagram according to the present invention,

4 is a flow chart according to the present invention.

Claims (2)

The modem 10 which modulates and demodulates the input / output signals through the receiving terminal RX and the transmitting terminal TX, and is connected to the transmitting terminal TX or the receiving terminal RX of the modem 10 by a switching control signal. Log switch 20, impedance matching transformer 30, CPU 40 for overall control of the system, and relays K1 and K2 connected to the line TR and driven by the first relay drive signal. And a relay K3 driven by the second relay drive signal, a relay K5 and a resistor R1 for detecting a state of a hook switch and outputting a first hook-off signal, and a ring signal input for detecting a ring signal input. In a facsimile automatic switching circuit having a port coupler (PT1) for outputting a detection signal, a common terminal (COM) is connected to the telephone connection terminal (101) and a normal close terminal (NC) is the normal of the relay (K1). Relay K6 connected to the cross terminal NC and driven by the fourth relay drive signal. The common terminal COM is connected to the connection terminal 102 by a telephone, and has a relay terminal NC and a normal open terminal NO, and relays interlocked with the relay K6 by the fourth relay driving signal ( K7) and the power supply voltage (V _CC ) and the contact between the contact and the negative power supply voltage terminal (V _EE ) and the normal open terminal (NO) of the relay (K7) is connected to the hook off state in the automatic switching mode. A photocoupler (PT2) for detecting and outputting a second hook-off signal and a voice response storage unit (100) connected to the modem (10) for outputting voice data stored in a voice response control signal in an automatic transfer mode; It is connected to the relay K1-K7, the photo coupler PT1-PT2, the analog switch 20, the CPU 40, and the voice data storage unit 100 and controlled by the CPU 40. Outputs the fourth relay driving signal, the switching control signal and the voice response control signal, and the first and second hook-off signals. Ring detected by inputting the signal the CPU (40), automatic transfer of fax, characterized by consisting of a input-output interface unit 200 for output to the circuit. The modem 10 which modulates and demodulates the input / output signals through the receiving terminal RX and the transmitting terminal TX, and is connected to the transmitting terminal TX or the receiving terminal RX of the modem 10 by a switching control signal. Log switch 20, impedance matching transformer 30, CPU 40 for overall control of the system, relays K1-K7, photocouplers PT1, PT2, and audio data storage 100 And, in the automatic switching control method of the facsimile having the input and output interface unit 200, by checking whether the ring signal is detected to determine whether the currently set mode is the manual receiving mode, if the manual receiving mode rings the ring and hook The first step of retrieving the off state and receiving a document after the completion of a telephone call when the hookoff is made within the first set time T1, and the mode currently set in the first step is automatic unless the manual reception mode is selected. Check if the reception mode In the automatic receiving mode, searching for whether a ring signal is detected after a predetermined time delay, and if a ring signal is detected within the second set time T2, switching to a facsimile on a line to send a fax signal and receive a document; In step 2, it is determined that the mode currently set is not an automatic receiving mode, and is an automatic switching mode. Then, it is determined whether a ring signal is detected. In the third process, when the call is off, the fax is automatically transferred to the line and the telephone is disconnected after the completion of the telephone call or the document is received. If the voice response is possible, the voice signal is transmitted and then the receiving state is received. In the fourth step of receiving a document, and if the voice response is not possible in the fourth step, it is in a receiving state, and then checks whether a facsimile signal is received and receives a document when a fax signal is received. After the fifth process to send a pseudo ring Beckton while ringing and search for the hook-off state, and if the hook-off within the first set time (T1) in the fifth process, the transfer from the fax to the line and after the telephone call is completed The sixth step of disconnecting or receiving a document, and the ring within the second set time T2 in the second step when the ring signal is not detected in the first step or the hook-off is not made within the first set time T1. When no signal is detected or when document reception is completed, when a ring signal is not detected in the third process, a fax signal is not received within the third set time T3 or a problem in the fourth process. Is not received within the first setting time T1 in the fifth process when the fax signal is not received within the third setting time T3 in the fourth process when the reception is completed. When the document reception is completed in the sixth step, the automatic switching control method of the facsimile, characterized in that it comprises a seventh step of initializing the analog switch and all relays to the original position. ※ Note: The disclosure is based on the initial application.