DE2366009A1 - AUTOMATIC FAKSIMILE RECEIVING SYSTEM FOR A FAKSIMILE RECEIVING DEVICE - Google Patents

Description

DR. BERG DIPL.-ING. STAPF DIPL.-1NG. SCHWABE DR. DR. SANDMAlR

8 MUNICH 86, POST BOX 86 02 45

Attorney file 24 693

KARUSHIKI KAISfIA RICOH Ota-ku, TOKYO / Japan

Automatic reception system for facsimile reception contraption

The invention relates to a facsimile communication system, and more particularly to the automation of a facsimile receiving apparatus of the type using a subscriber line.

It is the automation of a remote call subscriber line proposed using facsimile receiving apparatus

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¹ S (0811) 98 82 72 8 Munich 80, Mauarkircherstra8e 45 Banks: Bayerische Vereinsbank Munich 453

<089> 98 70 43 Telegrams: BEHGSTAPFPATENr Munich Hypo-Bank Munich 389 2623

98 33 10 TELEX: 05 24 560 BERG d Postscheck Munich 653 43-808

■ so that a facsimile sender becomes the facsimile receiving apparatus can call at any time you want; this enables the respective pictorial representations to be transmitted or images are sent and received automatically. The advantage of this system is that facsimile transmission is also possible without an operator during the night at reduced fees. The conventional, automatic Facsimile receiving apparatus does not only include a recording apparatus or a printer such as B. an electrostatic recorder, but also a magnetic tape recorder, to record the transmitted facsimile information for reuse, e.g. B. for manufacturing and reproduce multiple copies; this receiving device however, does not contain an arrangement that automatically transfers the received data from the recording device or the printer can switch to the magnetic tape recorder depending on the state of the printer

must use the conventional facsimile automatic receiving apparatus must always be switched on so that you can automatically answer or respond to the sender's call at any time can. Therefore, the conventional automatic faksirailie receiving device has not been satisfactory the requirements.

According to the present invention, therefore, there is an improved one automatic facsimile receiving apparatus.

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Furthermore, according to the present invention, there is provided an improved automatic receiving system for a facsimile receiving apparatus created, the automatic transmission of the received facsimile or data information in dependence of the state of the printer, in particular of the recording paper from the printer to a magnetic tape recorder can switch.

Finally, the present invention also provides an automatic one Receiving system for a facsimile receiving apparatus, which automatically switches to a power supply circuit in response to the callsign transmitted by a facsimile transmitter turns it on and also turns it off after completing the reception of the facsimile or video information.

According to the present invention, depending on the Detection of a 16 Hz ringing signal from a facsimile transmitter

Circuit

is transmitted., a closed equal to a subscriber line built automatically; furthermore, a power supply circuit is also automatically switched on. Subsequently, a facsimile receiving device is automatically activated in response to the status signal that appears after Callsign is received and the resolution, reception speed, types of recording media such as B. recording paper, Magnetic tape and similar media, the size, d. H. indicates the size of the recording paper, etc., set to the desired reception mode. If the image or

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Video information (hereinafter always referred to as "video information" is received, the. Power supply circuit automatically switched off and the closed DC circuit reopened automatically. The system also includes a first detector, to determine an error in the transmission system * as well as a second detector used to detect a mechanical malfunction the facsimile receiving device is designed so that not only the power supply circuit is switched off, but also the closed DC circuit is opened if any error or defect is detected »- Furthermore .wird, when an error or defect is found when the images or images are reproduced on a recording paper The video information is automatically recorded by a magnetic tape recorder, so that the destruction of the received video information can be prevented.

The invention thus creates a system with which automatically a Facsimile receiving apparatus in response to a call sign is put into operation. In dependence of. a call sign issued from a facsimile transmitter becomes an equilibrium circuit built a Ferrissprechunterleitung and a power supply circuit excited; furthermore, the / FaksiniIe-Em-P The catching device is set to the desired reception mode, so that the video ■. . /

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Information can be automatically received to the transmitted reproduce pictorial representations or illustrations. When the reception of the video information is finished, the DC control circuit is opened automatically and the power supply circuit is also automatically de-energized. If there is still a malfunction of a recording device or a printer wanted to appear in the facsimile receiving device, the device is switched, so that the received video information is transferred to a magnetic tape recorder. Therefore, after the elimination the printer malfunction this figurative Reproduce representations or images based on the video information recorded on the magnetic tape became.

The invention is illustrated below with the aid of exemplary embodiments with reference to the diagrammatic drawing

explained in more detail.
Show it:

Fig. 1 is a block diagram of a preferred embodiment of an automatic Receiving system for a facsimile reception s device according to the present invention;

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2 shows an example of a structure of a block of transmitted data;

Fig. 3 shows in detail a circuit diagram of the call detector shown in Fig. 1, as well as the relay control stage;

4t shows in detail a circuit diagram of the power control unit shown in Fig. 1;

Fig. 5 in detail a circuit diagram of the in ' Fig. 1 shows the state control system;

Fig. 6 is a circuit diagram of the facsimile control unit shown in Fig. 1; and

Fig. 7 shows in detail a circuit diagram of a switching arrangement to selectively the received Video information on a printer or tape recorder transferred to.

A pair of conventional telephone subscriber lines L and L is through a gate 1 for the Leitungsstetierung and a coupling transformer 2 with a MODEM than 3 bezeieh-

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connected modulator and demodulator unit, which is adapted to convert the data transmitted through the subscriber lines L. and L into the signals that can be processed by a facsimile system, that is, a system for the remote transmission of data and images; furthermore, the output signals of the facsimile system are converted into signals which can be transmitted through the subscriber lines L · _Λ and L ₀ on or off. The output signal of the MODEM is given through an output line 22 to a data receiving system of the facsimile receiving apparatus, which consists of the following parts: a pair of input memories 4 and 5 which are designed so that they can temporarily store the received data, a switching arrangement 6, a converter 8 to decrypt or decode the received data compressed or condensed into the original video information, and a printer 9, the. reproduces or reproduces the original pictorial representations or images based on the transformed video information. The data transmission system has the following parts: an image scanner or scanner 10, a compressor or condenser 11, which compresses or compresses the video output signal of the image scanner 10, an output or transmission memory 12 to temporarily transmit the

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to store carrying data, and a line 23 on the the output signal of the output memory 12 to the MODEM 3 is transmitted. Since the data transmission system is nxcht- in is directly related to the present invention it will not be explained in more detail in this description.

To autan a facsimile receiver or sender from a distance. To control, the status signals must be transmitted to a facsimile data capture device before the facsimile data so that they can be read depending on the resolution or fidelity, the use of a magnetic tape or recording paper for reception, and the size of the recording paper, if this is used, can be switched to a certain operating mode * For this purpose, a status detector 13 is inserted, which is connected to a status control unit ik ; This control unit Ik is connected to a facsimile control unit 15, which switches the facsimile device to transmit mode or receive mode and, in the case of receiving mode, selects a magnetic tape recorder 7 or the printer 9, as will be described in detail below. The facsimile control unit 15 is also connected to an error detector 16 and a mechanical detector 17; the error detector 16 detects errors occurring in the transmission system, while the mechanical detector 17 detects mechanical errors or defects in the facsimile device.

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Therefore, the facsimile control unit 15 controls the connection or shutdown of the transmission line the ON-OFF operation the power supply such. B. a power supply unit 18, as well as other control devices depending on the signals, which are output from the error detectors 16 and 17, such as will be described in detail below.

The subscriber lines Lj and L "are also connected to a call detector 19, which determines whether the call sign of 16 Hz is present. A relaxation control stage 20, which actuates the logic element 1 for the line control, is excited as a function of the output signal of the call detector 19 and as a function of the DEFEKT or ENDE signal (FAULT or END signal), which is transmitted through a line 2k from the facsimile Control unit 15 is transmitted, de-energized. The relay control stage 20 is connected by a line 25 to a power supply control unit 21 which regulates the ON-OFF operation of the power supply part 18 as a function of the output signal of the relay control stage 20.

The following is the general operation of the facsimile automatic receiving system constructed as described above to be discribed. When the input signal is received, the call detector 19 »depending on the 16 Hz call sign actuated to excite the relay control stage 20, so that the logic element 1 for the line control

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is switched on. Therefore, the subscriber lines L and L _{0 are} connected to the facsimile receiving apparatus through the link 1 for line control.

, more closed

So that means, a DC circuit is made between d-en

Subscriber lines L.. and L and the coupling transformer 2

X £ u

built up. In response to the output of the relay control section 20, the power control unit 21 turns on the power supply section so that power is supplied to the facsimile receiving apparatus and other devices. Then the initial state of the facsimile receiving device is checked. When the facsimile receiving device is in the receiving mode, this means: The answer signal is through the subscriber lines en L. and L ₀ . to a (not

X c *

provided) facsimile transmitter, and the transmitter transmits the .Zustandssignal that the receiving speed _t the receiving mode, the recording medium, such. B. indicates the tape recording device 7 or the printer 9 »and the size of the recording paper.

The status signal is detected by the status detector I3, whose output signal is transmitted to the status control unit Ik. In response to the output signal from the unit Ik , the facsimile control unit 15 generates control signals in order to set the facsimile apparatus to receive operation. If the facsimile machine has been set to receive mode, the signal is transmitted to the transmitter which indicates

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that the facsimile machine is ready to receive the video information to receive - Then the sender begins to transmit the video information.

The received video information is demodulated by the MODEM 3, then stored in the buffers k and 5, transmitted by the switching arrangement 6 and transformed or expanded by the converter 8, so that the printer 9 transfers the pictorial representations or images in the usual way reproduces.

If errors are detected in the received information by the error detector 16, and if by the mechanical Fault detector 17 a mechanical malfunction of the Facsimile receiving device is detected, the facsimile control unit 15 transmits the DEFECTIVE signal through the line 24 to the relay control stage 20 so that it is de-energized is to the logic element 1 for the line control switch off. Therefore, the connection between the subscriber lines L and L and the facsimile machine is interrupted, and at the same time, the power control unit 21 switches the power supply part 18 depending on the De-excitation of the relay control stage 20. The DEFEKT signal is also transmitted to the control stage 20 if the Facsimile machine is not receiving when the Input signal is received, so that the logic element 1

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for line control and power supply unit 18 can also be switched off.

If a malfunction or an error such as B. the total consumption of the recording paper and / or the Developing agent occurs in the printer 9 so that the reproduction of the information becomes impossible so transmits the control unit 15, the switching signal via a line 27 to the switching arrangement 6, so that the second input memory 5 is connected to the magnetic tape recorder 7. This allows the received video information on the Tape recorded so that the recorded information can later be played back to reproduce the pictorial representations or images after the Malfunction of printer 9 has been eliminated.

Generated after the receipt of all transmitted data has ended the facsimile control unit 15 the END signal, so that the relay st your stage 20 is excited ent. This will become the link 1 for the line control and the power supply part l8 switched off in the manner described above.

As shown in Figure 2, there is one block: that of. Sender transmitted data from the following parts: A synchronous code field A, which indicates the beginning of a new data block;

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a status code field D, which the resolution, the size of a recording paper to be used, a transmission speed and other information to the facsimile receiving apparatus set for the desired operation; the video information field C; and the check bit field D, that is used for the parity check of each data block will.

According to FIG. 1, a block of transmitted data, as shown in FIG. 2, is stored in the first input memory k , and the status code in the field B is detected by the status detector 13. When the data are transferred from the memory k to the memory 5, they are also transferred to the error detector 16 so that an error in the received data can be detected on the basis of the code for the parity check in the field D.

The status code field B consists e.g. B. from eight bits. The first two bits are used to indicate whether for uses magnetic tape or recording paper for reception will. If z. B. the first bit is "1", the magnetic tape is selected while the recording paper is selected, when the second bit is "1". The third, fourth and fifth bits are used to indicate the resolution, i.e. aisa, the number of scan lines per unit length. If z. Ö. the. the third bit is "1", the resolution is L "lines per mm;

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if the fourth and fifth bits are also "1", then amount to the resolution L lines per mm or L lines per mm- Das sixth, seventh and eighth bits are used to define the Specify the transmission speed. Of course, the data structure shown in Fig. 2 is only used as an example. In the data structure shown in FIG. 2, the Data field C not used if the status code is transmitted will. Similarly, the status code field B not used. This means that the bit length in a block is always constant without influencing whether the status code or the video information is transmitted so that the The control system of the facsimile machine is considerably simplified can be.

* In the following, the basic parts shown in Fig. 1 will be described in detail. In Fig. 3, the link 1 for the line control, the call detector 19 and the relay control stage 20 are shown in detail; the 16 Hz ringing signal transmitted through lines L and L is rectified by a rectifier 190 so that a DC voltage is applied to a zener diode 191. Therefore, after a period of time depending on the time constant determined by a resistor RI and a capacitor CI, a transistor Tr-I is turned off "while a transistor Tr-2 becomes conductive, so that an RI relay 192 is excited. As a result of this, an armature rl-1 of the relay 192 in the ReIaI ss expensive stage 2O is closed to a flip-flop 2OO

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set or set so that transistors Tr-5 and Tr-6 become conductive to energize an OH relay 201. This will be Contacts oh-1 and oh-2 in the call detector 19 closed, so that the transistors Tr-3 and Tr-4 become conductive after a predetermined period of time to energize a GO relay 193, which opens his contact go. In this way

, closed
the direct current circuit of the subscriber lines L and L _{0 is established.} In this case, the point in time at which the contact go is opened after the contact oh-2 is closed depends on the time constant of a time constant circuit consisting of a resistor R-2 and a capacitor C-2.

The flip-flop 200 is reset as a function of the DEFECT or END signal transmitted through the line 2k , so that the transistors Tr-5 and Tr-6 are switched off. Relay 201 is de-energized to open contacts oh-1 and oh-2. The transistors Tr-3 and Tr-4 are also switched off in order to close the contact £ o_. The flip-flop 200 can be set or reset by a manual start button 202 or end button 203. The respective output signals of the set or reset flip-flop 200 are transmitted through the line 25 to the load control unit 21.

. With reference to FIG k below the Stromversnrgunj'Siteucrin ^ - unit 21 and the power supply part 18 are described in detail. A conventional circuit 210 for determining

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Development of the zero crossing generates the signal "O" on a line 211 each time the alternating input voltage occurs the zero point goes, so the input voltage becomes O. One Trigger circuit 212 generates a trigger signal to a bidirectional logic gate or to energize bidirectional gate 212. When the signal on line 25 is on is a low level, an AND circuit does not provide an output signal, so that the bidirectional skmipfungselement 212 is not energized. As a result, the AC input signal is not transmitted to an output line 215. If the Flip-flop 200 is set in the relay control stage 20, so the signal on line 25 rises to a high level, so that the AND circuit 214 provides an output signal as soon as the AC input signal goes through the zero level. The logic element 212 is dependent on the by the Trigger circuit 213 generated trigger signal excited so that the AC input signal can be transmitted through the logic element to the output line 215, which is the power supply line for the facsimile machine. When the signal on line 215 goes low, so the trigger circuit 213 is de-energized so that the AC input signal is not transmitted to the output line 215.

Referring now to FIG. 5, the state control unit l4 are described in detail. When the facsimile machine is receiving, the RCV becomes

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Signal given to a logic element l4l, so that the Status signal or the status code issued by the status detector (see Fig. l) is detected by a line l40 and logic elements l4l and 142 to a shift register ΙΛ3 can be transmitted with eight bits in order to achieve the one shown in FIG to process the format shown. The contents of the shift register 143 does not become just the facsimile control unit 15, but also through a bypass line 144 and the link l42 led in a circle. Switch 145-1 through l45-8 can be used to control the shift register l43 can be set to the desired operating mode by hand. The two states of the hand switches 145-1 to 145-8, namely, the ON state and the OFF state, respectively, are held once in flip-flops 146-1 to 146-8 and then through gates 147-1 through 147-8 set in the shift register 143 when the state setting signal at the same time on the logic elements 147-1 until 1A7-8 is given. The flip-flops 146-1 to 146-8 are reset in response to the reset signal "RESET".

Referring to Fig. 6, the facsimile control unit will now be described 15 will be described in detail- The state si Signals are used as inputs from the state control unit given to a matrix circuit 15Ο while the transmission error signal from the failure detector 16, the signal for a mechanical malfunction from the second failure detector

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17, hang-up or tail signal, the paper error signal, etc. on the vertical (horizontal) line - elements of the matrix 150 are given; In addition to the above The signals mentioned are also the signal for the manual disconnection of the power supply as an OFF signal by a switch 151 given to the matrix circuit I50 to the power supply part l8 to be switched off manually. Therefore, various control signals are provided by combining these input signals. In practice, of course, are still more input and output lines connected to matrix circuit 150. The operation of the control unit 15 should now be described in the event that z. B. the paper error signal is present, which indicates the occurrence of an error in the printer 9. Depending on this paper error signal the matrix circuit I50 a paper error signal resulting in the switching arrangement 6 is transmitted to them in the manner as described above with reference to FIG.

7 shows a circuit diagram of the circuit arrangement 6 in detail. When the facsimile receiving apparatus is set to "paper mode" is set. that is, to the mode in which the images are reproduced on a recording paper, then becomes a link 60 energized so that the stored in the input memory 5

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Data are transmitted to the printer 9 through the logic circuit 8 used for the conversion. If the receiving device is set to "tape operation", that is, if the transmitted information is recorded on a tape, the tape operation signal is applied to an AND circuit 62 through an OR circuit 61, so that the content of the second input memory 5 is transferred to the magnetic tape recorder 7 is transmitted. If the content of the input memory 5 is transmitted to the printer 9, if the facsimile receiving device is set to "paper mode", and if the paper error signal is transmitted from the control unit 15, the normal operation of the printer 9 indicating that the printer 9 is in normal operation is reduced to the logic element 6O given go signal to a lower level, and the paper error signal is given through the OR circuit 6l to the AND circuit 6 2. Therefore, the logic element 60 is switched off while the logic element 62 is switched on, so that the content of the input memory 5 is transferred to the magnetic tape recorder 7 through the logic element 62.

The description serves only to explain a preferred embodiment of the present invention; Of course various modifications can be made without departing from the underlying concept of the invention.

Claims

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Claims (4)

, DR. BERG DIPL.-ING. STAPF DIPL.-ING. SCHWABE DR. DR.SANDMAIR PATENTANWÄLTE 8 MÜNCHEN 86, POSTFACH 86 02 45 2366009 P 23 65 217.7-31 K- K. Ricoh lawyer sale te 2k 693 2 0. DtZ. 1375 A_U_S_S_C_H__E_I_D_y_N_G_S_A_N_H_E_L_D_U_Nr_Q New patent claims 1. Automatic Faksitnile-Enipfangssystern with an arrangement for determining a call sign transmitted by a telephone subscriber line, with a control device, Hsii, which builds up a closed direct current circuit over the telephone line as a function of the output signal of the determination arrangement. a receiving device for the video information transmitted by a transmitter through the closed direct current circuit and with a recording device for reproducing the video information on a recording material, characterized in that the signals are detected in a block which contains a synchronous code field (A ) _{r has} a status code field (B), a video data field (C) and a check bit field (D), which are transmitted successively through the subscriber line. 709827/0354 -2- ■ 3 "(049) Oi S272 8 MilcKiiea 30, MaueckirchsrstnCe 4-5 banks: Bayerische Verain ibunSc Munich 453 ICO 987043 Teli? Nmmi: BERGSTAPFPATENT Munich Hypo-Bank Munich 3392623 93 33 TO TELEX: 0524560 BERG d Postscheck Munich 65343-S08 2. Automatic facsimile reception system according to claim 1, characterized in that the block has a constant bit length. 3. Automatic facsimile receiving system, after one of claims 1 or 2, characterized in that d, ate the or the signals in the status code field or fields bzif. Fields (B) before the signals are received in the video data fields (C). 4. Automatic facsimile reception system after, one of claims 1 or 2, characterized »that the Signals in the video data fields (C) after reception of the signal (s) in the condition code field (s) or fields (B). 709827/0354