JP2000125071A - Facsimile device and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ISDN router function for facsimile device, to integrally control it, to improve operability, to save space and to reduce cost by controlling the communication state of an outer terminal and a digital pubic communication line, which are connected so that they can communicate, in accordance with a prescribed protocol. SOLUTION: MPU 201 analyzes the IP address of a packet received from a data terminal and activates an ISDN interface 225. When a call setting message is transmitted to ISDN and a response message is received from ISDN, MPU 201 changes over a port switch 229, controls a system so that an HDLC controller 227 is connected to ISDN and sets an echo canceller to a through mode. When a call channel is set, the processings of the recognition of a connection procedure, a certification processing, the designation of a protocol and the designation of an IP address are executed. When a PPP link is established, the previously received packet is transmitted to ISDN.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus connected to, for example, a digital public line (ISDN) and having a built-in ISDN router function, and a control method therefor.

[0002]

2. Description of the Related Art In recent years, with the spread of ISDN, when performing data communication using a plurality of external terminals such as personal computers, it has been connected to an ISDN via an ISDN router.

In this case, an external terminal is connected to an ISDN router with an Ethernet cable, and an ISDN router is connected to the external terminal.
Data is transmitted to the DN router at a transmission rate of 10 Mbps. Upon receiving the data, the ISDN router sends a call to a predetermined ISDN number and sends the data to a PPP (Point to Point).
Protocol) to establish a link with the other party,
Adds a predetermined header to the data received from the PC and
Send to DN.

A public line, ISD, is used for an ISDN router.
Since N is connected, other media (audio,
Telephone, facsimile, etc. used for communication
Used by connecting to the analog port of the SDN router.

FIG. 13 is a diagram showing the configuration of a system when a conventional ISDN router is used.

In FIG. 1, reference numeral 2101 denotes an ISDN router; 2102, a PHS master unit connected to the first analog port of the ISDN router; 2103, a PHS telephone;
Reference numeral 2104 denotes a PC connected to the ISDN router by an Ethernet cable, 2105 denotes a second PC connected to the PC by a cable, 2106 denotes a printer connected to the PC by a cable, and 2107 denotes a second analog port of the ISDN router. A connected facsimile machine 2108 is an ISDN, and 2109 is an ISDN router of a partner (such as an Internet provider) connected via the ISDN.

FIG. 14 is a diagram showing the internal configuration of a conventional ISDN router.

In the figure, 2201 is a CPU (microcomputer), 2202 is a memory, 2203 is a data bus, 2204 is an ISDN interface unit including a DSU (Digital Service Unit), 2205 is a B-channel serial signal, and 2206 is an ISDN transmission HDLC controller for assembling / disassembling the data frame
Reference numeral 207 denotes a LAN interface, and 2208 denotes an analog port for connecting a terminal connectable to an analog public line.

FIG. 15A shows a frame format of a packet transmitted on the LAN. In the figure,
The preamble is repetitive data of 01 (7 octets) for capturing bit synchronization, the delimiter is a code indicating the start of a frame, the destination address and the destination address are each a 6-octet MAC address, the length is the frame length, and the data is TCP. / IP packet data and CRC are data error detection codes.

FIG. 15B shows a TCP / IP frame format transmitted in the data field shown in FIG. 15A. IPH is an IP header and includes a destination / destination IP address. I have. TCPH is TC
This is a P header.

FIG. 16 shows a PPP (Point to Point Protocol).
ol) is a diagram showing a frame format. In the figure, the flag is a pattern indicating the start and end of the frame of 01111110, and the address is 11111111.
, A fixed pattern of 000000011, a protocol is 2-byte data indicating the type of network layer protocol to be used, data is variable-length transmission information including PPP control data, user data, and the like.
CS is a data error detection code.

FIG. 17 is a diagram showing a communication sequence based on PPP, which is standardized in RFC1661.

The procedure for performing data communication using a conventional ISDN router is as follows.

After initializing the router prior to data communication, the external terminal 2104 is connected to the ISDN router 210.
1 and installs an initial setting program in the external terminal 2104. Then, settings such as the other party's telephone number, the other party's host name, the password, the filtering address, and the IP address are performed.

The external terminal 2104 is connected to the partner router 2101
, The packet transmitted by the external terminal 2104 is received by the LAN controller 2207. LA
When the N controller 2207 detects the header of the packet, it issues an interrupt request to the CPU 2201.
In the interrupt processing executed by the interrupt request, the CPU 2201 is notified that data has been received, and
U2201 stores received data received from the external terminal 2104 via the LAN controller 2207 in the memory 22.
02. At this time, data such as the preamble, delimiter, MAC address, and CRC shown in FIG. 15A have been deleted.

The CPU 2201 analyzes the IP address in the packet shown in FIG. 15B received from the external terminal 2104, and activates the ISDN interface 2204 when recognizing that the IP address is not a target of the address filtering. Perform outgoing call processing. When a response message is received from ISDN and the B channel is connected,
A PPP link establishment process is performed with the router 2109.

Specifically, according to the sequence shown in FIG. 17, confirmation of the connection procedure, authentication processing, designation of a protocol,
Processing such as designation of an IP address is performed. When the PPP link is established after these processes, the external terminal 210
4 is converted to a PPP frame shown in FIG. 16 and transmitted to the ISDN via the HDLC controller 2206. Thereafter, the external terminal 210
The packet transmitted from No. 4 is converted into a PPP frame in the same procedure as the previous packet and transmitted to the ISDN.

Conversely, the data received from the ISDN is H
DLC controller 2206 detects the reception,
Stored in the memory 2202. The CPU 2201 deletes the PPP header from the stored data, writes the data in the LAN controller 2207, and outputs the data to the external terminal 2104 via the Ethernet cable.

On the other hand, the analog port of the ISDN router 2101 is connected to the PHS master 2102 and the facsimile machine 2.
107 and the like can be connected. When the PHS base station 2102 that has received the call from the PHS telephone 2103 performs a calling process (polarity inversion), the PHS base station 2102 sends it to the ISDN router 2
CPU 22 via an analog port 2208 in the CPU 101
01 is detected, a calling process is performed to ISDN, and PH
S can make a call. The same applies to the facsimile machine.

[0020]

However, the above-mentioned ISDN router has a complicated connection because the telephone line, the facsimile machine and the ISDN router share the public line, and the PC is connected to the ISDN router, printer and scanner. And a large installation space was required.

When the resources (devices) required for the ISDN router 2101 and the facsimile machine are compared,
There are many hardware / software resources that can be used in common. When independent devices are used, these resources cannot be used effectively, resulting in a lot of waste.

Further, in the conventional ISDN router, it is often necessary to connect an external terminal when performing initial setting and to perform the setting from the external terminal. In some cases, it can be set using the router's user interface,
Since the operation surface is small, it has been difficult to perform an efficient setting operation.

Further, in a conventional ISDN router, an external terminal is connected only via an Ethernet cable. However, with the spread of wireless data communication using PHS or the like, there is a need for a method in which an external terminal connected wirelessly can access the Internet in the same operating environment as an external terminal connected by a wired cable. Is coming.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a facsimile apparatus having an ISDN router function to perform integrated control, thereby improving operability and at the same time saving space and reducing costs. Is to provide a facsimile machine that can achieve the following.

Further, by using a variety of methods to convert data received from an external terminal to a facsimile apparatus and using optimal hardware resources, a facsimile document can be transmitted / received from an external terminal connected via a LAN by a simple operation. And a control method thereof.

Further, by adding an ISDN router function to a facsimile apparatus, a facsimile apparatus and a control method thereof capable of efficiently performing initial settings required for an ISDN router using a facsimile keyboard and display are provided. To provide.

Furthermore, by providing the facsimile apparatus with a base unit function for supporting PHS data communication, even when using an external terminal connected for wireless communication,
An object of the present invention is to provide a facsimile apparatus which can easily access the Internet and a control method therefor.

Further, since the configuration uses a multi-controller and a shared register, it is possible to add an ISDN router function without greatly changing a conventional facsimile apparatus, and to provide a highly expandable facsimile apparatus. Is to provide a facsimile apparatus and a control method for the facsimile apparatus, which can realize the following.

[0029]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and achieve the object, a facsimile apparatus according to the present invention comprises a facsimile apparatus having a facsimile communication control unit connectable to a digital public communication line, and an external terminal. Are communicably connected, and have built-in communication control means for controlling the communication state between these external terminals and the digital public communication line according to a predetermined protocol.

Further, the control method of the facsimile apparatus of the present invention has a facsimile communication control unit connectable to a digital public communication line, and external terminals are communicably connected to each other, and these external terminals are connected to the digital public communication line. A facsimile apparatus control method for controlling the communication state according to a predetermined protocol, a call setting processing step of transmitting a call setting message according to a predetermined protocol to the digital public communication line during facsimile communication or voice communication, An interface step of performing an interface for connecting to the external terminal; an address detecting step of detecting an IP address in a packet received from the external terminal; and an IP detected by the address detecting step.
A determining step of determining whether a packet of an address can be transmitted to the digital public communication line; anda transmitting step of transmitting a packet received from the external terminal to the digital public communication line if the transmission is possible. Prepare.

Further, the method of controlling a facsimile apparatus according to the present invention has a facsimile communication control section which can be connected to a digital public communication line, and external terminals are communicably connected to each other. A facsimile apparatus control method for controlling the communication state of the facsimile apparatus according to a predetermined protocol, wherein a wireless communication step of communicably connecting the external terminal by digital radio, and an IP address in a packet wirelessly received from the external terminal. An address detecting step of detecting, a determining step of determining whether or not a packet of the IP address detected by the address detecting step can be transmitted to the digital public communication line; and if the packet can be transmitted, the digital public communication Transmitting a packet received from the external terminal to a line.

[0032]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. [First Embodiment] FIG. 1 is a diagram showing a communication system according to a first embodiment of the present invention.

As shown in FIG. 1, 101 is a facsimile apparatus having a wireless communication function, 102 is an external terminal such as a PHS telephone connected by a wired cable, 103 is an external terminal such as a personal computer connected by a wired cable, 104 is a PHS telephone, 105 is a wireless data transmission protocol processing card (hereinafter PIAFS card), 106
Is a PHS telephone 104 via a PIAFS card 105
The external terminals 106 and 107 communicably connected to the terminal are digital public communication networks (hereinafter, ISDN).

FIG. 2 is a block diagram showing a detailed configuration of the facsimile apparatus 101.

As shown in FIG. 2, reference numeral 201 denotes a central control unit (MPU); 202, a data bus and an address bus;
03 is a ROM, 204 is a RAM.

Reference numeral 205 denotes a facsimile (F) including a CPU (microcomputer), an image processing unit, and the like.
AX) engine unit, 206 is a FAX engine CPU,
Reference numeral 207 denotes a data bus of the FAX engine unit, which is a device 2 necessary for performing a facsimile operation.
08-216 and controls them. Reference numeral 208 denotes a color printer, 209 denotes a color scanner, 210 denotes an operation panel, 211 denotes a parallel communication interface port, and 212 denotes a connector for a parallel communication interface. Data transmitted from the data terminal via the parallel communication interface connector is transmitted to the printer 208. An image read by the scanner 209 can be transmitted to the data terminal via the parallel communication interface connector 212. 213
Is a fax modem, 214 is a handset, 215 is a speaker, 216 is a hold melody generator, and these are F
At the same time as being controlled by the AX engine unit 205, it is connected to the analog switch 217, and the voice or facsimile analog data is connected to the public communication line via the analog switch 217.

Reference numeral 218 denotes a shared register, which is connected to the device connected to the data bus of the FAX engine unit and the MPU 20.
Used when data is exchanged between devices connected to one data bus.

219 is a LAN controller, 220 is L
An AN driver / receiver 221 is a modular connector for Ethernet, which is connected to a communication port of the data terminal and functions as an interface for data transmitted and received by the data terminal to and from a public communication line.

Reference numeral 222 denotes a modular connector for connecting an ISDN (point U), and reference numeral 223 denotes a DSU, which converts data exchanged with the central office into TTL level signals. 224a is a modular connector for bus connection with a terminal connected to an ISDN (S / T point), 224b is a transformer, 224c is a driver / receiver, and an AMI for exchanging with an ISDN terminal having a function of connecting to the S / T point.
By converting code data and a TTL level signal, a plurality of ISDN terminals can be connected to a bus and used. An ISDN interface unit 225 controls the ISDN layers 1 to 3, and has an input / output function of ISDN B channel data.

Reference numeral 226 denotes an echo canceller, which removes an echo generated in a public communication line. 227 is HDLC
A controller that assembles / disassembles data in HDLC format to ISDN. 228 is PIAFS
A controller, a wireless data transmission protocol (PI
(AFS) format data is assembled / disassembled.

Reference numeral 229 denotes a first port switch.
The MPU 201 has a 2 switch 231 and a 2-1 switch 231, and performs switching processing of data transmitted on the B1 channel and the B2 channel of the ISDN under the control of the MPU 201. An echo canceller control signal 232 performs operation mode setting of the echo canceller and on / off control of the echo canceller operation.

Reference numeral 233 denotes a second port switch.
It has 1 changeover switches 234 and 235, and performs switching processing of data connected to the first port switch 229 under the control of the MPU 201. 236 is I. It is a 460 data conversion processing unit, and performs a transmission rate conversion processing of 32 Kbps / 64 Kbps.

237 is a PHS engine unit, and 238 is a PH
S control CPUs 239 and 240 are audio codec units,
A first and second PHS baseband processing unit 241 including a radio transmission frame assembling / disassembling unit, a modem unit, and the like;
Is a high frequency unit, 242 is an antenna, and converts analog voice and facsimile data input / output via the analog switch 217 into PCM data,
It enables two channels of 32 Kbps wireless voice / data transmission to and from an HS telephone.

The functions of important signals will be described below. Reference numeral 243 denotes a CPU of the MPU 101 and the FAX engine unit.
A signal line for a serial communication signal for CPU open communication at 206;
244 is the MPU 201 and the CPU 20 of the PHS engine unit.
6 is a signal line for serial communication signal for CPU-to-CPU communication.

245 and 246 are analog switches 217
And a PHS engine unit 237. The analog signal of this signal line is connected to the PCM codec of the first PHS baseband processing unit 239 and the second PHS baseband processing unit 240, respectively.
It is converted to an M signal.

Reference numeral 247 denotes a 64 Kbps data signal line obtained by performing PCM conversion on an analog signal from the analog signal line 245, and 248 denotes a 64 Kbp signal used for communication in the first wireless slot.
s is a signal line for data, and 249 is an analog signal line 246.
A signal line for 64 Kbps data obtained by performing PCM conversion of an analog signal from the PC, and a reference numeral 250 is a signal line for 64 Kbps data used for communication in the second wireless slot.

Reference numeral 251 designates 3 used in unrestricted digital communication.
2Kbps data signal line. To connect to ISDN B channel, It is connected to the port switch 229 via the 460 converter 236.

Reference numeral 252 denotes a signal line for PCM audio data connected to the first baseband processing unit 239, and reference numeral 253 denotes a second signal line.
Signal lines 254 and 255 for PCM audio data connected to the baseband processing unit 240 are 460 processing unit 23
6 are connected to a switch 231 and a PIAFS controller 228, respectively. 256 is a signal line for 64 Kbps data connected to the PIAFS controller,
Is a 64 Kbps data signal line connected to the HDLC controller. 258 is a signal line for 64 Kbps data transmitted on the B1 channel of ISDN, 25
9 is 64 Kbps transmitted on ISDN B2 channel
Is a data signal line.

Reference numeral 260 denotes a signal line for supplying a clock of 8 KHz and 64 KHz extracted from ISDN.
The transfer of signals on data lines 258, 259 is synchronous with these clocks. Reference numeral 261 denotes a signal line for supplying a clock of 8 KHz, 32 KHz, and 64 KHz output from the PHS engine unit.
48, 249, 250 transfer of these 8K
Hz and 64 KHz, and 251 is synchronized with 8 KHz and 32 KHz.

FIGS. 3A and 3B are diagrams showing a PHS radio transmission frame format. FIG. 3A shows an SCCH (individual cell paging) frame used when establishing a radio link, FIG. 3B shows a PCH (broadcast paging channel) frame, and FIG. ) Are frames such as TCH and FACCH used for normal data communication.

FIG. 4 shows a wireless data transmission protocol (PI
FIG. 3 is a diagram showing a frame format used in AFS), wherein (a) is a negotiation frame transmitted and received to select a protocol and establish frame synchronization;
(B) is a synchronization frame transmitted / received for resynchronizing frames during communication, (c) is a control frame for transmitting / receiving control information, and (d) is a data frame for transmitting / receiving user data.

When data communication by PIAFS is performed, first, in-band negotiation, frame synchronization establishment, response delay time measurement, and the like are performed using a negotiation frame, and then communication parameters are set by a control frame. Start data communication.

FIG. 5 is a flowchart showing the facsimile transmission operation. 6 and 7 are flowcharts showing a data communication operation by an external terminal connected by a wired cable. FIGS. 8 and 9 are flowcharts showing a data communication operation by an external terminal enabled to perform wireless communication. FIGS. 10 and 11 are flowcharts showing the operation of transmitting and receiving a facsimile document by each external terminal. FIG. 12 is a diagram showing a communication sequence when the facsimile apparatus connects to an external terminal by PHS radio.

A program for executing the flow of FIGS. 5 to 11 includes a program memory storing an application program in the data terminal, a ROM built in the CPU 238, and a computer necessary for each processing in the flash memory 203. (Or a microcomputer).

Next, operation processing (method) and data flow in various operation modes that can be executed by the facsimile apparatus of the first embodiment will be described with reference to FIGS. <Facsimile Transmission and Voice Call Operations> First, a facsimile transmission operation, which is a basic operation of the facsimile apparatus, will be described.

When facsimile transmission is started on the operation panel 210 (S501), the scanner 209 is activated.
The document is read at
It is stored in the memory in the X engine 205 (S50
2).

At this stage, the CPU 206 executes the MPU 201
The MPU 201 receives the FAX transmission request via the serial communication line 243, activates the ISDN interface 225 (S503), and transmits a call setup message to the ISDN (S504).

When a response message is received from the ISDN and connected to the partner (S505), the MPU 201 switches the port switches 217, 233 and 229, and the FAX modem output data is transmitted via the PCM codec inside the PHS engine unit 237. The connection is made to the ISDN (S506). Further, the echo canceller 226 sets the through mode (S507). When the communication channel is connected in this manner (S508), negotiation with the other party's FAX, such as the FAX transmission speed, is performed (S509). When the negotiation ends, fax
The data stored in the memory in the engine 205 is
3FAX encoding (S510), and the encoded data
The signal is input to the AX modem 213 and modulated (S511).
The 9600 bps analog signal modulated by the X modem 213 is input to the analog switch 217, connected to the PHS engine 235, and connected to the PHS baseband processing unit 2.
PCM encoding is performed by the codec in 39 or 240 (S512). At this time, the analog switch 217 is switched so that the codec in which the PHS baseband processing units 239 and 240 are not used is used. For example, when the PHS baseband processing unit 239 is not used, a signal output from the FAX modem 213 is transmitted via the data line 243 to the PHS baseband processing unit 23.
9, where the PCM encoded data is output from the data line 247 and input to the port switch 233. Then, the ISDN is transmitted via the echo canceller 226, the ISDN interface 225, and the DSU 223.
(S513).

The communication of the voice input from the handset is realized by changing the connection of the analog switch 217 from the time of the facsimile communication and setting the echo canceller 226 to the echo cancel mode at the same time. Is the same as in the case of facsimile communication. 1.2 Internet Access Operation by Data Terminals 102 and 103 First, an initial setting method for connecting the data terminals 102 and 103 will be described. When the user enters the router initial setting mode using the numeric keypad of the facsimile machine, "other party telephone number ..." is displayed. In this state, when the telephone number of the other party (Internet provider) is input using the numeric keypad, a call is transmitted to the telephone number set when a packet is received from the data terminal.

Next, "other host name ..." and "password ..." are displayed. When the host name and password are input in this state, the host name and password input in the authentication processing are sent to the other party.

Next, "address filter ..." is displayed. Here, the IP address of the packet that should not be transmitted to ISDN is input, for example, “150.6
1.29. "*", Enter "150.6
All packets starting with “1.29” are filtered so as not to be sent to ISDN.

Next, "IP address ..." is displayed. In this state, the user inputs the IP address assigned to the facsimile machine.

Next, "NAT IP address ..." is displayed. In this state, NAT (Network Address T
When connecting to a provider by a (ranslator) function, the terminal IP address added to the packet sent from each data terminal is converted into the input address.

The data input in this manner is written and stored in a predetermined area of the flash memory 203.

When the initial setting is completed as described above,
An Internet access operation from the data terminals 102 and 103 can be started. The Internet access operation itself is the same as that of the conventional ISDN router, but will be briefly described in order to clarify which resources in the facsimile machine are used.

First, the data terminal 102 is connected to the router 108
, The packet transmitted by the data terminal 102 is received by the LAN controller 219. LAN
When the controller 219 detects a packet header (S601), it issues an interrupt request to the MPU 201 (S602). In the interrupt processing executed by the interrupt request, the MPU 201 notifies the MPU 201 that the data has been received.
Transfer the received data received from the data terminal 102 via the memory 9 to the memory 204 (S603). At this time, FIG.
Data such as the preamble, delimiter, MAC address, and CRC shown in FIG. 5 (a) have been deleted.

The MPU 201 analyzes the IP address of the packet shown in FIG. 15B received from the data terminal 102 (S604), and if it is other than the address set in the "address filter" (S605). , IS
The DN interface 225 is activated to perform a calling process (S606). If the address is an address to be filtered, the packet is discarded (S60).
7).

A call setup message is transmitted to ISDN (S
When the response message is received from the ISDN and the B channel is connected (S609), the MPU 201 controls the port switch 229 so that the HDLC controller 227 is connected to the ISDN (S61).
0), the echo canceller is set to the through mode (S
611). When the communication channel is thus connected (S612), a PPP link establishment process is performed with the router 108 (S613).

Specifically, in accordance with the sequence shown in FIG. 17, confirmation of the connection procedure, authentication processing, designation of a protocol,
Processing such as designation of an IP address is performed. When these processes are completed and the PPP link is established, the data terminal 10
After converting the packet received from No. 2 into the PPP frame shown in FIG. 17, the packet is transmitted to ISDN via the HDLC controller 227 (S614). Thereafter, the packet transmitted from the data terminal 102 is converted into a PPP frame in the same procedure as the previous packet and transmitted to the ISDN. That is, when data is received from the data terminal (S615), the LAN controller 219 sends the MPU2
01 (S616), the data is transferred to the memory 204 (S617), and the data is converted to a PPP frame format (S618).
Write to the controller (S619) and send to ISDN via ISDN interface 225 (S6
20).

On the contrary, the data received from the ISDN is (S
621), the reception is detected by the HDLC controller 227 (S622), and stored in the memory 204 (S622).
623). The MPU 201 converts the stored data into a PPP
After deleting the header (S624), the data is written to the LAN controller 219 and output to the data terminal 102 via the Ethernet cable (S625). <Effects of the First Embodiment> As described above, the facsimile apparatus of the present embodiment is capable of supporting the MPU 201, the data bus 202, the flash memory 203, the RAM 204, the ISDN, both when transmitting a facsimile and when supporting Internet access by a data terminal. Interface 22
5, DSU 223 is used. Therefore, by incorporating the ISDN router function in the facsimile apparatus, it is possible to realize cost reduction and size reduction.

Further, the initial setting of the ISDN router function can be easily performed by using the operation panel 210 of the facsimile machine. [Second embodiment] <Internet access operation by wireless data terminal>
In the first embodiment, the LAN controller 21
9 has been described in the case of Internet access by a data terminal connected via the Internet. But,
Using the PHS data communication function, it is also possible to perform Internet access by a wirelessly connected data terminal.

When data is transmitted from the data terminal 106, the packet transmitted from the data terminal 106
It is sent to the S card 105. The PIAFS card 105 recognizes that a data transmission request has occurred,
After storing the received packet in the memory, it issues a transmission request to the connected PHS telephone 104, and the PHS telephone 104 that has received the transmission request transmits to the facsimile apparatus 101 in accordance with the sequence shown in FIG.

When the facsimile machine 101 receives a call request (S701), the PHS engine unit 237 transmits a response message to the PHS telephone 106 (S702).
Next, PIAFS negotiation starts.

The communication parameter setting request frame transmitted by PIAFS card 105 is received by PHS baseband processing section 239 of facsimile apparatus 101 via PHS telephone 106. The received 32 Kbps data is transmitted to the I.V. It is input to the 460 conversion processing unit 234. I. Since the 460 conversion processing unit is set to the through mode, the data is input to the port switch 229 without data conversion. The data input to the port switch 229 is input to the PIAFS controller 228 via the switch 231.

The PIAFS controller receives the communication parameter setting request frame (S703), transmits a communication parameter setting reception frame to the data terminal 106 via the PHS engine unit 237 (S704), and completes a predetermined negotiation procedure to transmit wireless data. Link (PI
AFS link) is established.

When a PIAFS link is established between the PIAFS card 105 and the PIAFS controller 228, data transmitted from the data terminal 106 is sent to the facsimile apparatus 101 thereafter. Specifically, the data transmitted by the data addendum 106 includes the PIAFS card 105
Is added to the PIAFS header and trailer, and transmitted to the facsimile apparatus 101.

In the facsimile apparatus 101, the PI
The data is received by the AFS controller 228 (S
705), after removing the PIAFS header and trailer, transfer the data to the memory 204 (S706). The MPU 201 analyzes the header of the received packet (S707), and determines that the received packet is other than the address set in the "address filter". If there is (S708), ISDN interface 2
25 is started to perform a transmission process (S709). If the packet is to be subjected to address filtering, the packet is discarded (S710).

A call setup message is transmitted to ISDN (S
711), when the response message is received from the ISDN and the B channel is connected (S712), the MPU 201 switches the port switch 229 to control the HDLC controller 227 to be connected to the ISDN (S71).
4) Set the echo canceller to the through mode (S
715). When the communication channel is thus connected (S716), a PPP link establishment process is performed with the router 108 (S717).

When the PPP link is established, the packet previously received from external terminal 102 is changed to the PPP shown in FIG.
After being converted into a frame, the frame is transmitted to the ISDN via the HDLC controller 227 (S718). from then,
The packet transmitted from the external terminal 102 is converted into a PPP frame in the same
Sent to. That is, when data is received from the external terminal (S719), the PIAFS controller 228
An interrupt is generated in U201 (S720), the data is transferred to memory 204 (S721), and the data is sent to PPP.
After converting to frame format (S722) HD
The data is written into the LC controller (S723) and transmitted to the ISDN via the ISDN interface 225 (S724).

On the contrary, the data received from the ISDN is (S
725), the reception is detected by the HDLC controller 227 (S726), and stored in the memory 204 (S726).
727). The MPU 201 converts the stored data into a PPP
After deleting the header (S728), the data is written to the PIAFS controller 228 and output to the external terminal 106 via the PHS engine unit 237 (S728). <Effects of the Second Embodiment> As described above, the facsimile apparatus of the present embodiment enables the PHS data communication to be performed, thereby enabling the wireless data transmission protocol (PI
An external terminal connected using AFS) can access the Internet or the like in the same operating environment as an external terminal connected via Ethernet. [Third Embodiment] In the first embodiment described above, the facsimile apparatus has a built-in router function,
Although it achieved cost reduction, downsizing and simplified initial settings, the built-in router function allows external terminals to realize new applications that make effective use of the resources of the facsimile machine. It is.

Specifically, it is possible to realize an application for transmitting data transmitted from an external terminal in the manner of an electronic mail as a facsimile document.

The FAX transmission application of the external terminal 102 is started, and the file transmission operation is executed. When the file transmission operation is executed, the external terminal 102 first transmits a “FAX transmission request command” including a destination telephone number as a TCP / IP packet.

In the facsimile apparatus 101, when detecting the header of the packet (S801), the LAN controller 219 generates an interrupt to the MPU (S80).
2) Transfer the received data to the memory 204 (S8)
03). The MPU 201 analyzes the header of the received packet (S804), and if the destination IP address is other than the address set in the "address filter" (S80).
5), the facsimile apparatus 101 receives the data, and in the facsimile apparatus 101, the MPU 201 analyzes the data in the packet (S807). As a result of the analysis, when it is recognized that the received command is a “FAX transmission request command”, a “FAX transmission request acceptance command” is transmitted to the external terminal 102 that has issued the FAX transmission request (S809). If the command is not the “FAX transmission request command”, the data is normal data, and the process from S606 in FIG. 6 is performed.

After S809, when a packet is received,
It is determined whether the destination IP address is a target of address filtering. If the packet is not filtered, the command at the head of the data field is read. If the command indicates "FAX transmission data" (S810), only the data thereafter is transferred to the memory 204 (S811). If the command is other than “FAX transmission data”, it is normal data to be transmitted to an Internet provider or the like, and thus the router processing (S61) shown in the first embodiment.
8 to S620) (S812).

When a packet indicating "end of FAX transmission data" is received and all the FAX transmission data is stored in memory 204 (S813), MPU 201 activates ISDN interface 225 (S814), and the attached destination telephone Performs ISDN transmission processing to the number (S8
15) When a response is received from the ISDN (S816), M
The PU 201 switches the port switches 217, 233, and 229 so that the FAX modem 213
7 so as to be connected to ISDN via S7 (S81
7) The echo canceller 226 is set to the through mode (S818). When the communication channel is connected in this way (S819), the process starts to transmit data stored in the memory. The MPU 201 indicates that FAX transmission is to be started.
The CPU 206 of the AX engine 205 is notified, and the CPU 206 having received the notification performs negotiation of FAX transmission with the partner terminal (S820).

When the negotiation is completed, the CPU 2
06 notifies the MPU 201 of a data transfer request (S821), and the MPU 201 transfers the data in the memory 204 via the shared register 218 to the FAX engine 20.
5 (S822). The transferred data is facsimile-coded and input to the FAX modem 213 (S823), and the modulated data is transmitted to the analog switch 2 (S823).
17 and is input to the PCM codec in the PHS engine unit 237. Here, after the analog / digital conversion (S824), the port switches 233, 229
From the ISDN interface 225 via the
N as fax data (S82).
5).

Conversely, the received fax document is transferred to the external terminal 10.
2 can also be sent.

When a subaddress is specified when an incoming call is received and the subaddress corresponds to the external terminal 102, the received facsimile image data is temporarily stored in the memory 204. Next, the stored image data is assembled into a packet, the IP address of the external terminal 102 is added to the destination address, and the packet is transmitted to the LAN via the LAN controller 219. External terminal 1
In 02, the received image data is displayed on the display.

As described above, the router function built in the facsimile apparatus makes it possible to transmit and receive facsimile documents from an external terminal by the same operation as Internet access. [Fourth Embodiment] The facsimile transmission in each of the above embodiments is based on a G3 facsimile that performs analog modulation. However, the same operation can be performed even when the G4 facsimile mode without analog modulation is used.

In this case, at the time of transmission, when the data to be transmitted is G4 facsimile encoded, it is transmitted to the FAX modem 2
13 and directly to the ISDN interface 225 to transmit to the ISDN without passing through the PCM codec in the PHS engine unit 237. [Fifth Embodiment] In each of the above embodiments, the MPU 201
, Both router processing and ISDN transmission / reception processing are performed. However, these processes can be performed by independent CPUs.

Therefore, a method of connecting a separate board (router board) equipped with a CPU, a memory, and a LAN controller to a facsimile machine having no router processing function is also conceivable. Control information is exchanged between the MPU 201 and the CPU in the router board.
The same effect as in the above embodiment can be obtained by also passing the data flowing above.

By adopting such a configuration, it is possible to easily add on the router function to a facsimile machine having no router processing function.

According to each of the above embodiments, since the external terminal is connected to the ISDN router by wireless data communication, it can be used even when the place where the public terminal is connected and the installation place of the external terminal are far from each other. It becomes possible.

Also, ISDN router, facsimile,
Built-in printer, scanner, and PHS base unit functions enable space saving and high cost performance to be realized. External terminals connected wirelessly, external terminals connected by wire, wireless telephones , A handset, a facsimile, and the like can be used for communication.

Further, since different computers (CPUs) are used for the facsimile processing unit and the other processing units, the present invention can be implemented without changing the circuit configuration of the conventional facsimile.

Further, by providing the ISDN router with printer, scanner, facsimile, and telephone functions and performing integrated control, operability can be improved, and at the same time, space saving and cost reduction can be realized.

Further, since the configuration uses a multi-CPU and a shared register, the ISDN router function and the PDP can be performed without making significant changes in the conventional facsimile apparatus.
This makes it possible to add an HS master unit function and realize a highly expandable wireless communication device.

[0098]

[Other Embodiments] Even if the present invention is applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, a printer, etc.), an apparatus (for example, a copying machine) Machine, facsimile machine, etc.).

Further, an object of the present invention is to provide a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or an apparatus, and a computer (or CPU) of the system or apparatus.
And MPU) read and execute the program code stored in the storage medium.

In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

The functions of the above-described embodiments are implemented when the computer executes the readout program codes, and the OS (Operating System) running on the computer is executed based on the instructions of the program codes. ) May perform some or all of the actual processing, and the processing may realize the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instruction of the program code, It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

When the present invention is applied to the storage medium, the storage medium stores program codes corresponding to the above-described flowcharts. Each module shown in the example will be stored in the storage medium.

That is, at least the “call setting processing step”
"Interface process", "Address detection process",
What is necessary is just to store the program code of each module of the “determination step” and the “transmission step” in the storage medium. In addition, at least the program code of each module of the “wireless communication step”, the “address detection step”, the “determination step”, and the “transmission step” may be stored in the storage medium.

[0106]

As described above, according to the first aspect of the present invention, the facsimile apparatus is provided with an ISDN router function to perform integrated control, thereby realizing an improvement in operability, and at the same time, space saving and cost reduction. Down can be planned.

According to the second and fourteenth aspects of the present invention, the ISDN router process can be performed simultaneously by effectively utilizing the resources of the facsimile machine.

According to the third and fifteenth aspects of the present invention, the initial setting of the router processing function can be easily performed without connecting an external terminal.

According to the fourth and sixteenth aspects of the present invention, an external terminal communicably connected can perform data communication in the same operating environment as an external terminal connected by a wired cable.

According to the fifth aspect of the present invention, it is possible to avoid a state in which communication cannot be performed due to a difference in media.

According to the sixth and seventeenth aspects of the present invention, the router processing function can be added to the facsimile apparatus without largely changing the hardware and software configuration of the base facsimile apparatus.

According to the seventh and eighteenth aspects of the present invention, a facsimile document can be transmitted even when the external terminal is not equipped with a FAX modem.

According to the eighth and nineteenth aspects of the present invention, a G3 facsimile document can be transmitted from an external terminal using a digital public communication line such as ISDN.

According to claims 9 and 20 of the present invention, FA
An external terminal without an X modem can receive a facsimile document.

According to claims 10 and 21 of the present invention,
The external terminal can receive the G3 facsimile document received via the SDN.

According to the eleventh and twenty-second aspects of the present invention, it is possible to transmit a facsimile document to a telephone number different from that for normal data communication.

According to the twelfth and twenty-third aspects of the present invention, the transmission timing for facsimile transmission can be recognized.

According to the thirteenth and twenty-fourth aspects of the present invention, even when a packet containing data other than facsimile is received, only facsimile data can be facsimile encoded.

[0119]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a system configuration according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a facsimile apparatus.

FIG. 3 is a diagram showing a PHS wireless transmission frame format.

FIG. 4 is a diagram showing a frame format used in a wireless data transmission protocol (PIAFS).

FIG. 5 is a flowchart of a facsimile transmission operation.

FIG. 6 is a flowchart of a data communication operation by an external terminal connected by a wired cable.

FIG. 7 is a flowchart of a data communication operation by an external terminal connected by a wired cable.

FIG. 8 is a flowchart of a data communication operation by an external terminal capable of wireless communication.

FIG. 9 is a flowchart of a data communication operation by an external terminal capable of wireless communication.

FIG. 10 is a flowchart of a facsimile document transmission / reception operation by an external terminal.

FIG. 11 is a flowchart of a facsimile document transmission / reception operation by an external terminal.

FIG. 12 is a diagram showing a communication sequence when the facsimile apparatus connects to an external terminal by PHS radio.

FIG. 13 is a block diagram showing a system configuration when a conventional ISDN router is used.

FIG. 14 is a diagram showing an internal configuration of a conventional ISDN router.

FIG. 15 is a diagram showing a frame format of a packet transmitted on a LAN.

FIG. 16 is a diagram showing a frame format of PPP.

FIG. 17 is a diagram showing a communication sequence by PPP.

FIG. 18 is a diagram showing an example of a memory map of a storage medium for storing a program code of the control method of the facsimile apparatus of the present invention.

FIG. 19 is a diagram showing an example of a memory map of a storage medium for storing a program code of the control method of the facsimile apparatus of the present invention.

[Explanation of symbols]

 201 MPU 202 Bus 203 Flash memory 204 SRAM 205 Facsimile engine unit 206 CPU 207 Internal bus 208 Color printer unit 209 Color scanner unit 210 Operation panel 211 Parallel communication port 212 Interface 213 Modem unit 214 Handset 215 Speaker 216 Melody unit 217 Analog switch 218 Shared Register 219 LAN controller 220 Driver 221 Interface 225 ISDN interface 226 Echo canceller 227 HDLC controller 228 PIAFS controller 229 First port switch 233 Second port switch 237 PHS engine

Continued on the front page F term (reference) 5C062 AA02 AA13 AA33 AA34 AA35 AA37 AB01 AB20 AB23 AB38 AC25 AC27 AC43 AC58 AE14 AF02 BA01 5K030 GA05 GA17 HA08 HB04 HC04 HC14 HD03 HD06 JA09 JL01 JT05 JT09 KA19 LB01 LL05 NN01 NN21 PP03 QQ01 SS07 TT01

Claims (26)

[Claims] 1. A facsimile apparatus having a facsimile communication control unit connectable to a digital public communication line, wherein an external terminal is communicably connected, and a communication state between the external terminal and the digital public communication line is determined according to a predetermined protocol. A facsimile machine having built-in communication control means for controlling. 2. The communication control means includes: a call setting processing means for transmitting a call setting message to the digital public communication line according to a predetermined protocol during facsimile communication or voice communication; Interface means; address detecting means for detecting an IP address in a packet received from the external terminal; and determining whether or not a packet of the IP address detected by the address detecting means can be transmitted to the digital public communication line. The facsimile apparatus according to claim 1, further comprising: a determination unit; and a transmission unit configured to transmit a packet received from the external terminal to the digital public communication line when the transmission is possible. 3. A display unit for displaying an operation state of the facsimile apparatus, and an input unit for setting the operation state, wherein the display unit and the input unit include a telephone number and a host name of a partner at the time of communication. 3. The facsimile apparatus according to claim 1, wherein all or a part of a password, an address filtering address, and an IP address can be displayed and set. 4. The communication control means includes: a wireless communication means for connecting the external terminal communicably by digital wireless; and an IP in a packet wirelessly received from the external terminal.
Address detecting means for detecting an address; determining means for determining whether or not a packet of the IP address detected by the address detecting means can be transmitted to the digital public communication line; 2. The facsimile apparatus according to claim 1, further comprising a transmission unit configured to transmit a packet received from the external terminal to a public communication line. 5. The communication control means, when an incoming call is received from the digital public communication line,
Analysis means for analyzing information elements in the received call setup message; telephone connection means for connecting B-channel data to the telephone if the result of analysis by the analysis means is a telephone; analysis by the analysis means Facsimile connection means for connecting the B channel data to the facsimile communication control unit when the result is facsimile; and external terminal via the LAN controller when the result analyzed by the analysis means is unrestricted digital. 5. The facsimile apparatus according to claim 2, further comprising a LAN connection means for connecting to the facsimile apparatus. 6. The facsimile communication control unit includes a first controller, and the communication control unit includes a second controller, and performs communication between the first and second controllers. Item 6. The facsimile apparatus according to any one of Items 1 to 5. 7. A facsimile determining means for determining whether or not a packet received from the external terminal is requested to be transmitted as facsimile data, and if the transmission is requested as the facsimile data, encodes the facsimile data. The facsimile apparatus according to any one of claims 1 to 6, further comprising an encoding unit, wherein the transmission unit transmits the encoded facsimile data to a digital public communication line. 8. A facsimile determining means for determining whether or not a packet received from the external terminal is requested to be transmitted as facsimile data, and if the transmission is requested as the facsimile data, encodes the facsimile data. Encoding means, modulating means for modulating the encoded facsimile data with a facsimile modem, and analog-to-digital converting means for converting facsimile data modulated with the facsimile modem from analog to digital. The facsimile apparatus according to claim 1, wherein the transmitting unit transmits the converted facsimile data to a digital public communication line. 9. Decoding means for decoding facsimile data received from the digital public communication line, wherein the transmission means generates a packet from the decoded facsimile data and transmits the packet to the external terminal. The facsimile apparatus according to claim 2, wherein: 10. A digital-to-analog converter for converting facsimile data received from the digital public communication line from digital to analog, a demodulator for demodulating the analog-converted facsimile data with a facsimile modem, and the facsimile modem. Decoding means for decoding the facsimile data demodulated in the step (a), wherein the transmission means generates a packet from the decoded facsimile data and transmits the packet to the external terminal. A facsimile apparatus according to claim 1. 11. When receiving a transmission request as facsimile data in a packet received from the external terminal, read telephone number information included in the transmission request and communicate with the read telephone number information. The facsimile apparatus according to claim 7 or 8, wherein: 12. The determining means recognizes a packet containing the last facsimile data from the packet received from the external terminal, and after the recognition of the packet containing the last facsimile data is completed, via the digital public communication line. 9. The facsimile apparatus according to claim 7, wherein the facsimile apparatus performs negotiation with a partner facsimile, and modulates the facsimile data after completion of the negotiation. 13. A first storing means for storing a packet received from the external terminal, an analyzing means for analyzing the packet stored in the first storing means, and a result of the analysis by the analyzing means, When facsimile data is included, the facsimile apparatus includes a second storage unit that transfers the data to the second storage unit and stores the data, and an encoding unit that performs facsimile encoding of the facsimile data transferred to the second storage unit. A facsimile apparatus according to claim 7. 14. A facsimile communication control unit connectable to a digital public communication line, wherein external terminals are communicably connected, and a communication state between the external terminal and the digital public communication line is controlled according to a predetermined protocol. A method for controlling a facsimile apparatus, comprising: a call setting processing step of transmitting a call setting message according to a predetermined protocol to the digital public communication line during facsimile communication or voice communication; and an interface for connecting to the external terminal. Performing an interface step; an address detecting step of detecting an IP address in a packet received from the external terminal; and determining whether a packet of the IP address detected by the address detecting step can be transmitted to the digital public communication line. A determination step to perform, and when the transmission is possible Control method for a facsimile apparatus, characterized in that it comprises a transmission step of transmitting a packet received from the external terminal to the digital public communication line. 15. A facsimile communication control unit connectable to a digital public communication line, wherein external terminals are communicably connected, and a communication state between these external terminals and the digital public communication line is controlled according to a predetermined protocol. A method for controlling a facsimile apparatus, comprising: a wireless communication step of communicatively connecting the external terminal by digital wireless; and an IP in a packet wirelessly received from the external terminal.
An address detection step of detecting an address; a determination step of determining whether or not a packet of the IP address detected in the address detection step can be transmitted to the digital public communication line; Transmitting a packet received from the external terminal to a public communication line. 16. An analysis step of analyzing an information element in a received call setup message when there is an incoming call from the digital public communication line, and B when the result of the analysis by the analysis means is a telephone. A telephone connection step of connecting the channel data to the telephone; a facsimile connection step of connecting the B channel data to a facsimile communication control unit if the result analyzed by the analysis means is a facsimile; and a result analyzed by the analysis means. 16. The control method for a facsimile apparatus according to claim 14, further comprising a LAN connection step of connecting the B channel data to an external terminal via a LAN controller when is a non-restricted digital signal. 17. The facsimile communication control unit includes a first controller, and the communication control unit includes a second controller, and performs communication between the first and second controllers. Any one of items 14 to 16
The control method of a facsimile apparatus described in the paragraph. 18. A facsimile determining step of determining whether or not a packet received from the external terminal is requested to be transmitted as facsimile data, and if the transmission is requested as the facsimile data, the facsimile data is encoded. 18. The control of the facsimile apparatus according to claim 14, further comprising an encoding step, wherein in the transmitting step, the encoded facsimile data is transmitted to a digital public communication line. Method. 19. A facsimile determining step of determining whether or not a packet received from the external terminal is requested to be transmitted as facsimile data, and if the transmission is requested as the facsimile data, the facsimile data is encoded. An encoding step, a modulation step of modulating the encoded facsimile data by a facsimile modem, and an analog-to-digital conversion step of converting facsimile data modulated by the facsimile modem from analog to digital. The method according to any one of claims 14 to 17, wherein in the transmitting step, the converted facsimile data is transmitted to a digital public communication line. 20. A decoding step for decoding facsimile data received from the digital public communication line, wherein the transmitting step generates a packet from the decoded facsimile data and transmits the packet to the external terminal. The method of controlling a facsimile apparatus according to claim 14, wherein: 21. A digital-to-analog conversion step of converting facsimile data received from the digital public communication line from digital to analog, a demodulation step of demodulating the analog-converted facsimile data by a facsimile modem, and the facsimile modem A decoding step of decoding the facsimile data demodulated in the above step, wherein the transmitting step generates a packet from the decoded facsimile data and transmits the packet to the external terminal. 3. The method for controlling a facsimile apparatus according to claim 1. 22. When receiving a transmission request as facsimile data in a packet received from the external terminal, reads telephone number information included in the transmission request and communicates with the read telephone number information. The control method for a facsimile apparatus according to claim 18 or 19, wherein: 23. In the determining step, a packet including the last facsimile data is recognized from the packet received from the external terminal, and after the recognition of the packet including the last facsimile data is completed, the packet is transmitted via the digital public communication line. 20. The control method for a facsimile apparatus according to claim 18 or 19, wherein negotiation with a partner facsimile is performed, and after the negotiation is completed, the facsimile data is modulated. 24. A first storing step of storing the packet received from the external terminal in a first storing unit, an analyzing step of analyzing the packet stored in the first storing step, and an analyzing step of analyzing in the analyzing step. As a result, when facsimile data is included in the packet, a second storage step of transferring the packet to the second storage means and storing the packet, and an encoding step of facsimile encoding the facsimile data stored in the second storage step 20. The control method for a facsimile apparatus according to claim 18 or 19, wherein 25. A facsimile communication control unit connectable to a digital public communication line, wherein external terminals are communicably connected, and a communication state between the external terminal and the digital public communication line is controlled according to a predetermined protocol. A computer-readable storage medium storing a program code of a control method of a facsimile apparatus, wherein a call setting processing step of transmitting a call setting message to the digital public communication line at the time of facsimile communication or voice communication according to a predetermined protocol. A code of an interface step of performing an interface for connecting to the external terminal; a code of an address detection step of detecting an IP address in a packet received from the external terminal; and an IP detected by the address detection step. Packet of the address And a code of a transmission step of transmitting a packet received from the external terminal to the digital public communication line if the transmission is possible. A storage medium characterized by the above-mentioned. 26. A facsimile communication control unit connectable to a digital public communication line, wherein external terminals are communicably connected, and a communication state between these external terminals and the digital public communication line is controlled according to a predetermined protocol. A computer readable storage medium storing a program code of a control method of a facsimile apparatus, wherein a code of a wireless communication step of connecting the external terminal so as to be communicable by digital wireless, IP
A code of an address detection step of detecting an address, a code of a determination step of determining whether or not a packet of the IP address detected by the address detection step can be transmitted to the digital public communication line; A transmission step of transmitting a packet received from the external terminal to the digital public communication line.