JP3071668B2 - FAX modem - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile FAX modem, and more particularly to a FAX control command
Class 2 (CITT Recommendation EIA / TIA 578,
592), when sending and receiving fax data,
The present invention relates to a FAX modem having a memory transmission / memory reception function of storing transmission / reception data in a temporary memory.

[0002]

2. Description of the Related Art Conventionally, this type of FAX modem temporarily stores received data and transfers the received data when the terminal starts up, for example, when the terminal side is in sleep mode and receives data from a partner FAX. Therefore, it has a memory function.

[0003] In general, a procedure for connecting a line between a FAX terminal and a modem before communication is described in CCITT.
Recommendations Class1 and Class2 are applied and standardized.

[0004] However, in the case of a FAX modem having a memory transmission / reception function, the connection procedure with the FAX terminal side requires the F
Since there is a manufacturer-specific communication mode for the memory function of the AX modem, this connection procedure is also a manufacturer-specific procedure.

[0005]

As described above, in the conventional example, since the connection procedure between the FAX modem and the terminal is a procedure unique to the manufacturer, the combination of the FAX modem and the terminal is fixed. There is a problem that it cannot be used in combination.

[0006]

A facsimile modem according to the present invention is a facsimile modem having a memory transmitting / receiving function for converting a facsimile data signal on the terminal side into a signal on the line side. Class
1, Class 2 standard is used.

That is, F which temporarily stores a transmission FAX data signal from a terminal and a reception FAX data signal from a line.
An AX data storage unit, a modem unit for converting the transmission FAX data signal to a transmission transmission line signal of the line and a reception transmission line signal of the line to the reception FAX data signal of the terminal, A paging signal detection unit for detecting a paging signal received from a facsimile, a paging signal transmission unit for transmitting a paging signal to the terminal, and activating the modem unit according to the received paging signal and following the connection procedures Class1 and Class2 recommended by CCITT. The received FAX data signal is stored in the FAX data storage unit, and at the same time, the calling signal transmitting unit waits for an incoming ER signal from the terminal to transmit a calling signal.
A series of receiving-side controls for transmitting the received FAX data signal stored to the terminal according to the connection procedure of ss1 and Class2, and receiving and temporarily storing a transmission call signal from the terminal, and subsequently performing the procedure of Class1 and Class2. After storing the transmission facsimile data signal in the facsimile data storage section, the transmission call signal stored for the line is sent out through the modem, and then the Class 1, Cl
A series of transmission side controls for transmitting the transmission FAX data signal stored in the connection procedure of ass2 to the line.
An X data transfer control unit.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram of a FAX modem showing an example of the embodiment.

The FAX modem includes a terminal connection terminal 1, a call signal transmission unit 2, a FAX data transfer control unit 3,
It comprises an X modem unit 4, a FAX data storage unit 5, a call signal detection unit 6, and a telephone line connection terminal 7.

The terminal connection terminal 1 is connected to a communication line from the terminal, and the telephone line connection terminal 7 is connected to a telephone line. The call signal detection unit 6 detects a call signal from the partner FAX. The FAX data storage unit 5 stores this data when transmitting and receiving FAX data using the memory transmission and reception function. The call signal sending section 2 sends a pseudo call signal to the terminal in response to the output signal from the FAX data storage section 5. The FAX modem unit 4 performs communication with the FAX of the other party. F
The AX data transfer control unit 3 receives a FAX control command Cla.
It has a function of performing facsimile communication in a pseudo manner using the ss1 and Class2 procedures.

Next, the operation of the FAX modem will be described. First, the operation of the receiving side that receives FAX data from the other party's FAX in memory and transfers this to the terminal will be described.
When there is a call from the other party's FAX, the call signal detector 6 detects this. The FAX modem unit 4 and the FAX data transfer control unit 3 start operating upon receiving a signal from the call signal detection unit 6.

The FAX data transfer control 3 stores Class 1 and Class 2 procedures for performing FAX communication. According to these procedures, data received by the FAX modem unit 4 is once stored in the FAX data storage unit 5 and received at the same time. The call signal transmitting unit 2 is notified that the data has been stored.

When receiving this signal, the call signal transmitting section 2 monitors an ER signal from a terminal connected to the terminal connection terminal 1, and transmits a pseudo call signal when this signal is turned ON. When the terminal starts operating in response to this signal, FAX
The data transfer control unit 3 transmits the received data stored in the facsimile data storage unit to the terminal.
Pseudo facsimile communication is performed with the terminal using the less2 procedure.

Next, the transmission data from the terminal is stored once,
The transmitting side that performs memory transmission will be described. When the terminal starts the transmission operation, the FAX data transfer control unit 3 stores the telephone number specified by the terminal and also transmits a pseudo F
The transmission data is stored in the FAX data storage unit 5 by performing the AX communication using the Class 1 and Class 2 procedures. When the storage of the transmission data is completed, the FAX data transfer control unit 3 instructs the FAX modem unit 4 to dial using the stored telephone number to connect to the other party's FAX.
Thereafter, the facsimile data transfer control unit 3 executes Class1, C
The data partner stored in the last2 procedure is transmitted to the facsimile.

[0015]

As described above, according to the present invention, a FAX modem using a memory transmission / reception function,
Class 1, C of CCITT recommendation for transmission and reception of X data
Since the las2 connection procedure is used, there is an effect that any terminal provided with this standard software can be connected.

[Brief description of the drawings]

FIG. 1 is a block diagram of a FAX modem showing an example of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal connection terminal 2 Call signal transmission part 3 FAX data transfer control part 4 FAX modem 5 FAX data storage part 6 Call signal detection part 7 Telephone line connection terminal

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 1/32-1/34 H04N 1/00-1/00 108 H04N 1/21

Claims (1)

(57) [Claims] A facsimile data signal transmitted from a terminal;
FAX that temporarily stores the received FAX data signal from the line
Communicates with the data storage unit and the other party's FAX via the line
Modem section and reception from the other party's FAX
A paging signal detector for detecting a paging signal;
A paging signal transmitting unit for transmitting a paging signal;
The modem is started by the signal and the connection of CCITT recommendation is started.
The above received in accordance with the following procedures Class1, Class2
Stores the received FAX data signal in the FAX data storage unit
At the same time, the call signal transmitting unit sends E from the terminal.
Waiting for the arrival of the R signal, sending a calling signal,
Follow the connection procedure for class1 and class2 to the terminal
A series of receptions for transmitting the stored received FAX data signal
Receiving side control and when the terminal starts transmitting operation, the terminal
Receives the specified phone number, temporarily stores it, and then
FAX data transmitted by the procedure of Class1 and Class2
After storing the signal in the FAX data storage section,
Send out the stored telephone number via the modem to
Subsequently, the connection procedure of Class1 and Class2 was described.
Sending the transmitted FAX data signal to the line
FAX data transfer control unit that performs a series of transmission side controls
FAX modem, characterized in that it comprises.