JPH04262667A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To confirm whether or not the reception of a required original is rejected while keeping the advantage of a closed area reception function by which the reception of an undesired original is rejected. CONSTITUTION:When a password is coincident in the closed area reception or the password cannot be received, whether a reception accept means 21 receives a data while limiting a length of reception or a reception reject means 22 rejects the reception is selected. The reception length is set optionally by the means 21 and the selection of the reception accept/reject is implemented by a reception accept/reject selection means 24. When the length reaches the reception length set to the means 21, a reception stop means 23 interrupts the reception forcibly. Thus, when the means 21 is selected, since the content of the arrival of the call having been rejected in a conventional equipment due to dissidence of password is confirmed, whether or not an important incoming call is rejected is checked.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention relates to a facsimile machine,
In particular, the present invention relates to a closed reception function based on password verification of a facsimile machine.

0002

BACKGROUND OF THE INVENTION With the spread of facsimile devices, pranks such as direct mail and sending blank originals using facsimile communication are increasing. In a facsimile machine equipped with a closed reception function, by setting the closed reception mode to such direct mail or prank transmission, it is possible to prevent reception of such direct mail or prank transmissions unless the passwords match.

[0003] The operation of password verification in closed area reception will be explained using the transmission control procedure shown in FIG. The calling terminal sends a calling tone (CNG) (procedure (1)),
In response, the called terminal returns a called terminal identification (CED) signal (step (2)), and a call is set up and a line is established. The called terminal then performs a Non-Standard Feature Identification (NSF)
) signal, a called terminal identification (CSI) signal, and a digital identification (DIS) signal (step (3)) to inform the calling terminal of all functions possessed by the called terminal.

For example, if the control signals related to non-standard functions are compatible, such as when both terminals are of the same model,
As shown in A) and (B), the calling terminal sends out a non-standard function setting (NSS) signal and a transmitting terminal identification (TSI) signal (procedure (4)). The calling terminal uses this NSS signal to specify a function selected from among all the functions of the called terminal. Therefore, the facsimile information field (FIF) of the NSS signal configured in the HDLC frame can include a password for closed communication.

On the other hand, when the control signals related to non-standard functions are not compatible, such as when both terminals are of different models, as shown in FIG.
As shown in (C), the calling terminal receives a digital command (DCS).
) signal and TSI signal (procedure (4-1))
. The calling terminal uses this DCS signal to specify a standard function selected from among all standard functions of the called terminal. Therefore, the DCS signal cannot include a password for closed communication, which is a non-standard function.

[0006] In FIGS. 4A and 4B, the called terminal detects the password included in the FIF of the received NSS signal and compares it with the password held by the terminal itself. If the passwords match (in the case of Figure 4(A)), after adjusting the high-speed modem for the training check (TCF) signal (step (5)), the called terminal sends the reception readiness confirmation (CFR) signal. is sent (step (6-1)), and closed communication is started. On the other hand, if the passwords do not match (the case in FIG. 4(B)), the called terminal issues a disconnection command (D
CN) signal (step (6-2)), and the call is disconnected. Furthermore, when the password cannot be received (the case shown in FIG. 4C), the called terminal similarly sends out the DCN signal (step (6-3)), and the call is disconnected.

In FIG. 4A, the calling terminal receives a reception confirmation (CFR) signal from the called terminal and sends image information as a facsimile message (step (7)), and when the sending of the image information is completed, , for example, sends out a procedure end (EOP) signal (procedure (8-1)). After waiting for the called terminal to return a message confirmation (MCF) signal in response to this EOP signal (step (8-2)), the calling terminal sends a DCN signal (step (9-1)), and then is completed.

[0008]

As described above, closed area reception by conventional facsimile machines is possible only when the passwords for closed area communication match, and this has caused the following practical problems.

[0009] The number of partner terminals capable of closed area reception is too limited, making it impossible to receive from, for example, a different model. Furthermore, since closed reception does not start unless the passwords match, the receiving side has no idea what kind of document was being sent. For this reason, although the closed reception function of conventional facsimile machines is very effective in preventing the reception of unnecessary documents such as pranks and direct mail, it has been difficult to utilize in practice.

[0010] Therefore, in the closed reception mode, if the passwords do not match or the password cannot be received, the present invention determines whether to receive within a preset maximum reception length or to reject reception. An object of the present invention is to provide a facsimile machine that can be selected in advance.

[0011]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a facsimile apparatus that receives and verifies a closed password transmitted from a destination terminal, and performs closed reception when the closed passwords match. If the closed passwords do not match, a reception permission means that allows the reception of image information within a preset maximum reception length, and a reception permission means that allows the reception of image information from the other party terminal within the maximum reception length set in the reception permission means. A reception termination means for forcibly aborting reception midway when the closed password is exceeded; a reception refusal means for refusing reception when the closed password does not match; and a reception permission means when the closed password does not match. The present invention is characterized by comprising reception permission selection means for selecting either to perform reception within the range of the reception length or to reject reception by the reception refusal means.

0012

[Operation] In the closed area reception by the facsimile apparatus according to the present invention, if the closed area passwords match, the closed area reception is performed as before. On the other hand, if the closed passwords do not match, the reception permitting means 21 shown in FIG. 1 permits reception within a preset maximum reception length l, and the reception refusal means 22 rejects reception.

[0013] Whether the reception permission means 21 receives within the maximum reception length l or the reception refusal means 22 rejects reception can be selected in advance by the reception permission selection means 24. If the transmitted image information exceeds the preset maximum reception length l, the reception abort means 23 forcibly aborts the reception midway through.

[0014] In this way, in the closed reception mode, it is possible to respond to a request to know what type of document was received when the passwords do not match.

[0015]

Embodiments Next, embodiments of the facsimile apparatus according to the present invention will be described in detail with reference to the drawings. Figure 1
2 shows a functional block diagram (A) of the present invention and a transmission control procedure when closed passwords do not match (B). Further, FIG. 2 shows communication control means 10 in a facsimile apparatus according to the present invention.
FIG.

In FIG. 2, 11 is a CP that controls communication.
U, 12 is a ROM that stores control programs, etc., and 13 is an RA that stores image information that should be transmitted or received.
It is M. Reference numeral 14 denotes an image reading unit that converts the transmitted original into image information, and 15 represents a recording unit that converts the received image information into a received image and prints it out. The operating section 17 and the display section 16 are man-machine interface sections of the facsimile machine, and are input/output sections for inputting operator's commands and notifying the operator of the status of the apparatus. 18 is a modem/NCU (network control unit) that sends communication control signals and image information to or receives communication control signals from the line.

In FIG. 1(A), reference numeral 21 denotes reception permitting means for receiving image information from a partner terminal within a preset maximum reception length l even if the closed passwords do not match in the closed reception mode. It is. 22, as in the conventional case, is a reception rejecting means that refuses to receive image information from the other party's terminal if the closed area passwords do not match in the closed area reception mode. Reference numeral 23 denotes a reception abort means for forcibly aborting reception midway when the transmitted document on the transmitting side is longer than the maximum reception length l preset in the reception permitting means 21.

Reference numeral 24 denotes reception permission selection means for selecting one of the two means 21 and 22 when the closed passwords do not match in the closed reception mode. Ru. That is, if the reception permission selection means 24 is set in advance to select the reception refusal means 22, the reception will be rejected if the passwords match, and the reception will be rejected if the passwords do not match, as in the past. On the other hand, if the reception permission selection means 24 is set in advance to select the reception permission means 21, closed reception will be performed if the closed password matches, and reception will be performed within the range of the maximum reception length l if the passwords do not match.

FIG. 1B shows a transmission control procedure when the closed passwords do not match and the reception permission means 21 is selected by the reception permission selection means 24. Sending a calling tone CNG from the calling terminal (procedure (1)) or sending a training check (TCF) signal (procedure (5))
) is the same procedure as the conventional example shown in Figure 4(B), so
The redundant explanation will be omitted.

[0020] The called terminal set to closed reception mode,
Facsimile Information Field (FIF) of the Non-Standard Feature Setup (NSS) signal received from the calling terminal
As a result of detecting and comparing the closed passwords inside, it is determined that they do not match. At this time, the reception permission selection means 24 of the called terminal has selected the reception permission means 21, so the called terminal sends the disconnection command (DCN) signal in the conventional example (step (6-2) of FIG. 4(B)). )), a reception readiness confirmation (CFR) signal is sent back to the calling terminal (step (6)).

In response, the calling terminal sends image information as a facsimile message (step (7)), and the called terminal receives this image information. When the maximum reception length l preset in the reception permitting means 21 is reached, the reception aborting means 23
, forcibly terminates reception midway (time t). For more information,
Turn off the CML relay (not shown) in the NCU 18. Note that the operation when the image information sent by the calling terminal is shorter than the maximum reception length l preset in the reception permitting means 21 of the called terminal is the same as that shown in FIG. 4(A).

After the calling terminal finishes transmitting the image information, it transmits, for example, an end of procedure (EOP) signal, but the called terminal has already been disconnected from the line at time t, and a response signal to this EOP signal, ie, The message confirmation (MCF) signal cannot be received within the specified 3 seconds ±15%. Therefore, the calling terminal sends the EOP signal three times as an error recovery procedure (step (8)), and then sends the DCN signal (
Step (9)), the call is terminated.

The above procedure applies when the control signals (NSF, NSS) related to non-standard functions are common between both terminals, but when the control signals related to non-standard functions are not common between both terminals, the procedure ( 4) Non-standard function settings (NSS)
) The same communication control can be performed by sending a digital command (DCS) signal instead. That is, Fig. 4 (
The conventional example shown in C) can also be dealt with in the same way.

FIG. 3 is a flowchart showing an example of the operation of the called terminal shown in FIGS. 1(A) and 1(B). First, the closed password received from the transmitting terminal is verified (step ST1). If the closed area passwords match, normal closed area reception is performed (step ST9), and after receiving the DCN signal from the transmitting terminal (step ST10),
The line is disconnected (step ST6).

On the other hand, if the closed passwords do not match, it is checked whether the reception permission selection means 24 is set to select either the reception permission means 21 or the reception refusal means 22 (step ST2). If the reception rejecting means 22 is selected, the DCN signal is sent (step ST8) and the line is disconnected (step ST6), as in the conventional examples shown in FIGS. 4(B) and 4(C).

When the reception permitting means 21 is selected, reception is performed within the range of the maximum reception length l set in advance from the transmitting terminal (steps ST3, ST4, ST5). If the transmitted document is shorter than the maximum reception length l, an MCF signal is returned in response to the EOP signal of the transmitting terminal (step ST7), and the following steps are performed.
Normal communication termination is performed (steps ST8, ST6
). On the other hand, if the transmission document is longer than the maximum reception length l, when the reception length reaches the preset maximum reception length l, the reception abort means 23 forcibly turns off the CML relay of the NCU 18 (step ST6 ), the reception is terminated.

[0027]

[Effects of the Invention] As described above, according to the present invention, in addition to the conventional closed area reception function, even if the closed area passwords do not match or the closed area password is not received, the reception length can be set as desired. Since reception can be selected, the reception of mischievous or unnecessary documents can be limited to within the set maximum reception length, and the degree of necessity of the incoming documents can also be determined.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing functional blocks and transmission control procedures of the present invention.

FIG. 2 is a configuration diagram showing communication control means of the facsimile apparatus according to the present invention.

FIG. 3 is a flowchart showing an example of a control program of the present invention.

FIG. 4 is a diagram showing a conventional transmission control procedure.

[Explanation of symbols]

11 CPU 12 ROM 13 RAM 14 Image reading section 15 Recording Department 16 Display section 17 Operation section 18 Modem/NCU 21 Reception permission means 22 Reception refusal means 23 Reception termination means 24 Receiveability selection means

Claims (1)

[Claims] [Claim 1] In a facsimile device that receives and checks a closed password transmitted by a destination terminal, and performs closed reception when the closed passwords match, if the closed passwords do not match, a A reception permitting means for permitting the reception of image information within a range, and a reception aborting means for forcibly aborting reception midway if the image information from the other party's terminal exceeds a maximum reception length set in the reception permitting means. and a reception refusal means that refuses reception if the closed passwords do not match; 1. A facsimile apparatus comprising: reception permission selection means for selecting either reception refusal or refusal of reception.