CN2162054Y

CN2162054Y - Facsimile printer capable of long-range transmission data of computer

Info

Publication number: CN2162054Y
Application number: CN 93238329
Authority: CN
Inventors: 谢拥军; 蒲永斌
Original assignee: STATE FUJIANG MACHINE PLANT
Current assignee: STATE FUJIANG MACHINE PLANT
Priority date: 1993-03-12
Filing date: 1993-03-12
Publication date: 1994-04-13
Anticipated expiration: 2003-03-12

Abstract

The utility model relates to a facsimile machine which can remotely transmit the data of a computer. The utility model is composed of a known three-class facsimile machine and an input / output interface which comprises a multicore socket (13), a serial input / output controller (11), a transmission line driver (12 a) and a transmission line receiver (12 b). The utility model can modulate data which is input into a computer by the input / output interface and can send the data into a public telephone network, and the utility model can demodulate the data which is sent from the public telephone network and can send the data into the computer by the input / output interface. The utility model overcomes the defects that the existing facsimile machine can transmit static image information but can not transmit computer data, and has the advantages of two purposes, accurate data transmission, etc.

Description

Facsimile printer capable of long-range transmission data of computer

The utility model relates to the facsimile machine in the communication apparatus, especially both can transmit static picture intelligence, but the data in the computer can be carried out the facsimile machine of a kind of remote transmission computer data of long-distance transmissions again by public telephone network.

At present, can on public telephone network, transmit literal, the Group 3 Facsimile Equipment of still image such as symbol or figure, the technical standard that generally is the group three document facsimile equipment recommended according to CCITT (CCITT) designs, this class facsimile machine comprises (referring to part in the frame of broken lines among Fig. 1): the central processor CPU and the peripheral chip (1) thereof that play complete machine control and data processing effect, the seal rom chip (2) in the resident district of configuration program, play the RAM chip (3) of program running and the effect of facsimile data storage portions, operation keyboard and display unit (4), scanning of image processing unit (5), image recording (6), automatically advance original text and paper delivery device for sheet (10), circuit network control circuit (7), modulation and demodulation unit (8), complete machine power supply (9).The flow process of this class facsimile machine transmission still image is: at transmitting terminal (referring to Fig. 4), by facsimile machine A control, a) be opposite in the machine original contribution---file (W) is lined by line scan, and light signal is become the signal of telecommunication and forms former picture intelligence; B) original image signal is handled become pictorial data; C) by coding pictorial data is compressed; D) send into public telephone network (GD) after the pictorial data after will compressing is modulated.At receiving terminal (referring to Fig. 5), the pictorial data of sending here by public telephone network (GD) is carried out d ' by facsimile machine A ') demodulation; C ' b ') decoding recovers picture intelligence; A ') after being write down, the picture intelligence after recovering becomes the duplicate of the document (W ') consistent with transmitting terminal file (W).To transmit the quality of image in order guaranteeing, to be provided with 9600bps, 7200bps, 4800bps or 2400bps(bps-bps that can select according to the public telephone network quality in this class facsimile machine) etc. different transmission speeds.The weak point of this class facsimile machine is: (1), owing to its structure be for finish the transmission still image be provided with, it can only finish the transmission of the still image information of obtaining by scanning.Realize the transmission of the file (as letter, statistics etc.) good to the computer inediting as need, then need elder generation the information in the computer to be printed on the paper by the information transmission process of facsimile machine, be made into " file " of the identification of fax function, can transmit by facsimile machine, and the recipient, only can obtain the copy of this " file ",, need once more by artificial input computer if need the content on the duplicate of the document is handled (as gathering) in computer.Use very inconvenient.(2), then can't transmit by this class facsimile machine for the binary data (as executable file) that can not be converted to pictorial information in the computer at all.

The purpose of the utility model, just at the above-mentioned deficiency of existing this class facsimile machine and a kind of static picture intelligence that both can transmit in public telephone network is provided, but can utilize it in public telephone network, to transmit the function of information again and directly transmit the facsimile machine of the remote transmission computer data of computer data.

The design that realizes above-mentioned purpose is:

Investigate the structure of existing Group 3 Facsimile Equipment and the flow process (referring to Fig. 1, Fig. 4, Fig. 5) of transmission signals thereof, we find, if we carry out a kind of such improvement to the structure of existing Group 3 Facsimile Equipment; The data (D) of the computer that is in transmitting terminal can be sent in the RAM chip (3) for program running and facsimile data storage of facsimile machine A, send into public telephone network (GD) after modulating (d) by facsimile machine A by pictorial data again; Carry out demodulation (d ') and send in the RAM chip (3 ') for the storage of program running and facsimile data in the carrier data that receiving terminal will be sent here by public telephone network (GD) by facsimile machine A ', manage again directly these data (D ') to be sent in recipient's computer, just can conveniently use the function that has Group 3 Facsimile Equipment now and the data of transmitting computer.The key of problem is in the structure of existing facsimile machine, sets up the input/output interface (321) that can computer data be sent into and export the RAM chip (8) of its confession program running and facsimile data under the facsimile machine host computer control.

The technical scheme of making by above-mentioned design is:

But a kind of facsimile machine of remote transmission computer data, this machine comprises at least: by shell, play the central processor CPU and the peripheral chip (1) thereof of complete machine control and data processing effect, the EPROM chip (2) in the resident district of configuration program, RAM chip (3) for program running and facsimile data storage, operation keyboard and display circuit (4), advance original text and paper delivery device for sheet (10), circuit network control unit (7), complete machine power supply (9), and under described central processor CPU and peripheral chip (1) control thereof, finish the scaning treatment device (5) that still image is scanned, finish the tape deck (6) that the picture intelligence that receives is write down, with described for the data in the RAM chip (3) of program running and facsimile data storage modulate and send into public telephone network or will by the data that public telephone network is sent here carry out demodulation and send into this confession program running and the RAM chip (3) of facsimile data storage in modem module (8) and the known Group 3 Facsimile Equipment of relevant printed circuit board (PCB) formation, but it is characterized in that the facsimile machine of described remote transmission computer data also comprises:

A multi-core socket (13), this socket can be by a serial communication interface realization electrical connection with cable and computer of multi-pin connector, and it is positioned on the described shell;

A serial i/o controller (11), it is used for and will be sent here by public telephone network and computer data through being stored in described RAM chip (3) for the storage of program running and facsimile data after the demodulation takes out and be sent to computer through its data sending terminal TX and maybe will deliver to the computer data of its data receiver RX and send in the RAM chip (3) of this confession program running and facsimile data storage, and it passes through address bus, data/address bus links to each other with described central processor CPU and peripheral chip (1) thereof with control bus;

A transmission line receiver (12b), this receiver be a level translation that is used for the computer data that will send by described multi-core socket (13) for and the level that is complementary of described serial i/o controller (11), its input links to each other with the individual pin of described multi-core socket (13), and its corresponding output links to each other with the data input pin RX of described serial i/o controller (11);

A transmission line driver (12a), the level that this driver is used for being sent to the data of described multi-core socket (13) by described serial i/o controller (11) becomes the level that is complementary with computer, its input links to each other with the data output end TX of described serial i/o controller (11), and its corresponding output links to each other with another pin of described multi-core socket (13).

Described scheme is actually on the basis of known Group 3 Facsimile Equipment, set up by serial i/o controller (11), transmission line receiver (12b), the input/output interface (321) that transmission line driver (12a) and multi-core socket (13) constitute.This input/output interface is one and meets the EIA-RS-232c standard interface that is used for asynchronous serial communication that Electronic Industries Association (EIA) proposes, facsimile machine links to each other with computer by this interface just, finishes the function of transmission computer data in public telephone network.

When adopting this scheme, only needing increases the control procedure that is used for compunication in the Control Software in the program residence district EPROM chip of existing facsimile machine, just can realize the transmission to computer data.Owing to must guarantee that data are accurate when transmitting computer data, can on the basis of the alternative several grades of transmission speeds of former facsimile machine, set up 300pbs(bps) first gear speed, select according to line quality for machine; The data that will transmit are divided into a lot of pieces by the capacity of the RAM chip (3) that supplies program running and facsimile data storage in the facsimile machine simultaneously, again each blocks of data is divided into a lot of sections, each segment data all adopts certain error correction coding mode, and the recipient carries out inverse operation to the identical coding of each section employing in each blocks of data of receiving, each section that receives judged,, can be required to retransmit if find to make mistakes, if correct, then request sends next blocks of data.

Facts have proved, adopt the facsimile machine of the technical program, not only have the ability of transmission still image in public telephone network, and can utilize the Various types of data in the public telephone network transmission computer, it is few to have accomplished that dual-use and cost increase, and has reached the purpose of the utility model.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation block diagram of the present utility model.

Fig. 2 is a circuit structure diagram of the present utility model, also is an instantiation, for convenience of explanation, saves its shell and printed panel.

Fig. 3 is the circuit diagram of another instantiation of the present utility model.This figure do not draw equally facsimile machine shell and relevant printed panel.

Fig. 4 sends flow process and sending computer data flow process when (in figure dotted line represent its flow process) of still image information when (solid line is represented its flow process among the figure) for the utility model to public telephone network.

Fig. 5 receives still image information (solid line is represented its flow process among the figure) and the flow process of receiving computer data when (dotted line is represented its flow process among the figure) for the utility model by public telephone network.

Fig. 6 is the user mode of the utility model when transmitting computer data in public telephone network.

Among Fig. 1, Fig. 2, by the central processor CPU and the peripheral chip (1) thereof that play complete machine control and data processing effect, the EPROM chip (2) in the resident district of configuration program, play the RAM chip (3) of program running and the effect of facsimile data storage portions, operation keyboard and display unit (4), advance original text and paper delivery device for sheet (10) automatically and constitute known Group 3 Facsimile Equipment (100) scanning of image processing unit (5), image recording (6), circuit network control circuit (7), modulation and demodulation unit (8), complete machine power supply (9).(11) be the serial i/o controller, it adopts the Z80SIO/O chip with asynchronous communication mode here.(12) be transmission line driver (12a) and transmission line receiver (12b).Transmission line driver (12a) adopts TT ∠/RS232c level voltage transducer (MC1488), and its operation level be-12V and+12V.Transmission line receiver (12b) adopts RS232C/TT ∠ level voltage transducer (MC1489), and its operating voltage is+5V.(13) be 25 core sockets.

In this example by serial input/output controller (11), 25 core sockets (13), transmission line receiver (12b) and transmission line driver (12a) constitute the input/output interface device (321) (referring to Fig. 4, Fig. 5) for facsimile machine and the mutual communication of computer.

Among Fig. 3, (100 ') are existing ZL560(or FO560) the type facsimile machine, the difference of example is that its serial i/o controller (11) is that central processor CPU chip (CPU HD64180) in this machine has an asynchronous serial communication control (11) among this example and Fig. 2, its data input pin is RX, data output end is TX, and remainder is identical with example among Fig. 2.

Among Fig. 4, Fig. 5, (321) (referring to Fig. 1, Fig. 2, Fig. 3) multi-core socket (13) of serving as reasons, the input/output interface device that transmission line driver (12a), transmission line receiver (12b) and serial i/o controller (11) constitute for computer data (D, D ') turnover facsimile machine.The with dashed lines arrow transfer process of computer data (D, D ') of having drawn among the figure; With the solid arrow still image transmission of Information flow process of having drawn, its process front is all introduced, is omitted here.

Among Fig. 6, A is the transmitting terminal facsimile machine.A ' is the receiving terminal facsimile machine.B is the transmitting terminal computer.B ' is a receiving end computer.(17) for having the cable of multi-pin connector, it is associated in facsimile machine (A, A ') and computer (B, B ') together.

Claims

1, but a kind of facsimile machine of remote transmission computer data, this machine comprises at least: by shell, play the central processor CPU and the peripheral chip (1) thereof of complete machine control and data processing effect, the EPROM chip (2) in the resident district of configuration program, RAM chip (3) for program running and facsimile data storage, operation keyboard and display circuit (4), advance original text and paper delivery device for sheet (10), circuit network control unit (7), complete machine power supply (9), and under described central processor CPU and peripheral chip (1) control thereof, finish the scaning treatment device (5) that still image is scanned, finish the tape deck (6) that the picture intelligence that receives is write down, with described for the data in the RAM chip (3) of program running and facsimile data storage modulate and send into public telephone network or will by the data that public telephone network is sent here carry out demodulation and send into this confession program running and the RAM chip (3) of facsimile data storage in modem module (8) and the known Group 3 Facsimile Equipment of relevant printed circuit board (PCB) formation, but it is characterized in that the facsimile machine of described remote transmission computer data also comprises:

A transmission line receiver (12b), the level translation that this receiver is used for the computer data that will be sent by described multi-core socket (13) for and the level that is complementary of described serial i/o controller (11), a pin of its input and described multi-core socket (13) links to each other, and its corresponding output links to each other with the data input pin RX of described serial i/o controller (11);

But 2, press the facsimile machine of the described remote transmission computer data of claim 1, it is characterized in that described multi-core socket (11) is 25 core sockets, serial i/o controller (11) is for having the Z80SIO/O chip of asynchronous communication mode, transmission line receiver (12b) is RS232C/TTC voltage level shifter (MC1489), and transmission line driver (12a) is TT ∠/RS232C voltage level shifter (MC1488).