JP4249752B2 - Facsimile apparatus and signal receiving method - Google Patents

Description

  The present invention relates to a facsimile apparatus and a signal receiving method, and more particularly to a facsimile apparatus and a signal receiving method that can prevent erroneous reception of image data.

  A facsimile apparatus is provided with a one-touch dial button, and a user often starts transmission using the one-touch dial button. Since a number of one-touch dial buttons are provided, there is a possibility that an erroneous operation is performed by the user and erroneous transmission is performed.

  The facsimile apparatus is generally set to an automatic reception state. When the automatic reception state is set, an erroneously transmitted document is also received. Then, if the received data is set to be stored in the memory, the memory capacity is wasted. In addition, when the received data is set to be printed, paper and a recording agent (toner, ink, etc.) are wasted.

  In view of this, a facsimile apparatus has been proposed in which data transmitted in error is not received (see, for example, Patent Document 1). The facsimile apparatus described in Patent Document 1 stores a telephone number in advance and stores a telephone number that matches the transmission source telephone number included in the received TSI signal (transmission terminal identification signal). Receive the transmitted data.

Japanese Unexamined Patent Publication No. 64-74868 (upper right column in section 3)

  However, since the TSI signal is an option signal, there are some facsimile machines that do not transmit the TSI signal. When the facsimile apparatus described in Patent Document 1 does not receive a TSI signal, it rejects data reception or conversely allows data reception. That is, when it is determined whether to receive data using only the TSI signal, there is a limit to making an accurate determination.

For example, Japanese Patent Laid-Open No. 2000-184007 describes a facsimile apparatus that generates and transmits a communication device identification code and a group identification code. The facsimile machine on the receiving side stores the communication device identification code and the group identification code in advance, and accepts data reception if the received communication device identification code and the group identification code match the stored code.

  However, the facsimile apparatus configured as described above needs to perform transmission / reception using a unique procedure signal in order to transmit / receive the communication device identification code and the group identification code. Therefore, unless it has a function of performing transmission / reception using a unique procedure signal, it is impossible to execute control for rejecting or allowing data reception. In facsimile communication using an analog telephone line or the like, the procedure signal is realized as a low-speed signal. Therefore, adding the unique procedure signal may increase the time required for the entire communication.

  Accordingly, the present invention provides a facsimile apparatus and a signal receiving method capable of executing control for rejecting or allowing data reception without using a TSI signal and without using a unique procedure signal. The purpose is to do.

A facsimile apparatus according to the present invention, identification information assigned to the own apparatus (e.g., local telephone number or transmission station phone number), were added to the predetermined position in front of the EOL first occurrence of definitive to image data The image data transmitting means for transmitting the phase C data, the storage means for storing the identification information in advance, and confirming whether or not the leading data in the received phase C data is EOL is determined in advance when it is confirmed that it is not EOL. The identification information extracting means for extracting the identification information from the given position, and the identification information extracting means when the processing for determining whether or not to accept image data based on the identification information is executed. when the extracted identification information and the identification information stored in the storage means are matched to allow reception of image data, identification information extracting means Check extracted identification information and judging means for interrupting the reception of the image data when the identification information stored in the storage unit do not match, an identification information extracting means the beginning of data in the phase C data is EOL A reception permission / refusal means for interrupting reception of the image data when it is set to execute processing for determining whether or not reception of the image data is permitted based on the identification information. And

Display means for displaying the identification information is identification information extracting means and extracting, after the identification information is displayed on the display unit, have a suspend interrupt means to receive the image data when the interruption instruction is input Also good .

Identification information extracting unit, when there is no EOL at the beginning of the full Phase C data, phase C data determines that the information includes identification information, data identification information of a position is predetermined in Phase C data is configured to extract as Runode, without specifying the facsimile procedure signals whether the phase B to phase C data contains identification information, be transmitted identification information is added to the image data it can.

  According to the present invention, since the identification information is included in the phase C data, it is not necessary to change the facsimile procedure signal when determining whether or not to accept the image data based on the received identification information. Compared with the case where the identification information is included in the signal transmitted and received in phase B, the transmitting station telephone number is transmitted and received at a higher speed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration example of a first embodiment of a facsimile apparatus according to the present invention. The configuration as illustrated in FIG. 1 and an encoding / decoding unit that performs data encoding (for example, using MH code, MR code, and MMR code) and decoding, a recording unit (printing unit), a document reading unit, and an input A device including an operation unit having keys and the like and a DTE (Data Terminal Equipment) having a display unit for displaying information and received data for a user can be defined as a facsimile device. The apparatus having the configuration illustrated in FIG. 1 may be defined as a facsimile apparatus.

  Further, the configuration illustrated in FIG. 1 can be realized as, for example, one printed circuit board, can be realized in one housing, or can be realized by a card that can be installed in a card slot of a DTE. . Hereinafter, the configuration illustrated in FIG. 1 is referred to as a facsimile adapter.

  In the facsimile adapter illustrated in FIG. 1, the DTE interface unit 1 performs communication according to a predetermined communication procedure when transmitting / receiving data to / from the DTE. The control unit 2 outputs data received from the DTE via the DTE interface unit 1 to the modulation unit 3 and transmits data input from the demodulation unit 6 to the DTE via the DTE interface unit 1.

  The modulation unit 3 modulates the carrier wave of the low-speed signal with the data of the facsimile procedure signal (low-speed signal). The modulation unit 3 modulates a carrier wave of a high-speed signal with data (image data). The transmission filter 4 stores the frequency component band of the carrier wave modulated by the modulation unit 3 within a predetermined range and outputs the band to the line interface unit 5. The demodulating unit 6 outputs data obtained by demodulating the carrier wave received via the line interface unit 5 and the receiving filter 7 to the control unit 2. The reception filter 7 removes an unnecessary band of the carrier wave input from the line relay 10. The line interface unit 5 outputs a signal from the line relay 10 to the reception filter 7 and the carrier detection unit 8, and outputs a signal from the transmission filter 4 to the line relay 10. When a carrier wave is input from the line relay 10, the carrier detection unit 8 outputs a signal indicating that to the control unit 2.

  When the ringer detection unit 9 detects a call signal (ringer signal) from the exchange, the ringer detection unit 9 outputs an incoming call detection signal indicating that to the control unit 2. When the incoming call detection signal is input, the control unit 2 causes the line relay 10 to be connected to the line and the line interface unit 5. Further, when a signal indicating transmission start is received from the DTE side, the line relay 10 is brought into a state of connecting the line and the line interface unit 5.

  The detection unit 11 determines whether or not a telephone number is included in the head portion of the data (data related to the high-speed signal) output from the demodulation unit 6. When the telephone number is detected, the telephone number is compared with the telephone number stored in advance in the storage unit 12. When the detected telephone number matches the telephone number stored in the storage unit 12, a coincidence signal indicating the coincidence is output to the control unit 2. If they do not match, a mismatch signal indicating that they do not match is output to the control unit 2.

  In this embodiment, the detection unit 11 is provided between the demodulation unit 6 and the control unit 2. However, when the detection unit 11 has a demodulation function, the detection unit 11 is connected from the line. It can be installed to directly input the signal. In this embodiment, the identification information extracting means for extracting the identification information from the received phase C data and the identification information extracted by the identification information extracting means match the identification information stored in the storage means. The determination unit that allows the reception of data is realized by the detection unit 11. Further, the storage unit 12 stores a telephone number assigned to a device that allows reception of image data therefrom.

  FIG. 2 is an explanatory diagram showing a state of transmission / reception of a general facsimile procedure signal. In the example shown in FIG. 2, at the time of negotiation (in phase B), first, an NSF signal (non-standard function identification signal), a CSI signal (called terminal identification signal), and a DIS signal (digital identification) are received from the image data receiving side. Signal) is transmitted. Next, a TSI signal (transmission terminal identification signal) and a DCS signal (digital command signal) are transmitted from the image data transmission side, and a TCF signal (training check signal: high-speed signal) is further transmitted. Then, a CFR signal (reception preparation confirmation signal) is transmitted from the receiving side.

  When the CFR signal is received at the transmitting side, phase C is entered. In phase C, the transmission side transmits image data (PIX: high-speed signal). FIG. 3 is an explanatory diagram showing an example of the format of image data used in this embodiment. Hereinafter, data transmitted and received in phase C is referred to as phase C data in order to distinguish it from original image data. In the example shown in FIG. 3, an image data length that is data indicating the size of the original image data and a transmission station telephone number that is data indicating the telephone number on the transmission side are set in the head portion of the phase C data. . Then, image data is set after the transmitting station telephone number. The image data length may be data indicating the size of the phase C data.

  In the example shown in FIG. 3, the image data length is set to the 0th data to the 3rd data (for example, the 0th byte to the 3rd byte), and the 4th data to the 14th data (for example, the 4th byte to the 4th data). Phone number is set to 14 bytes), and image data is set from the 15th data (for example, the 15th byte). In the example shown in FIG. 3, for example, data (for example, all 1) indicating that the transmission station telephone number is set is set in the fourth data, and the transmission station telephone number is set from the fifth data. . Also, there is no need for image data length. Also, data that is not all 0 is set in the 0th data (the head data of the transmitting station telephone number when there is no image data length). In this embodiment, an encoding method in which EOL (End Of Line: for example, 000000000001) is added to the head of original image data is used.

  Next, the operation will be described. In the facsimile adapter on the receiving side, when the ringer detection unit 9 detects a ringer signal, it outputs an incoming call detection signal to the control unit 2. When receiving an incoming call detection signal from the ringer detection unit 9, the control unit 2 notifies the DTE that an incoming call has been received via the DTE interface unit 1. Then, the DTE transmits a reception start signal to the facsimile adapter. When receiving the reception start signal via the DTE interface unit 1, the control unit 2 causes the line relay 10 to be connected to the line interface unit 5. Also, the phase B procedure is executed. The control unit 2 may independently execute the procedure of Phase B, or transmit the received signal to the DTE every time it receives each signal in Phase B, and after receiving a transmission instruction from the DTE, the phase B Each signal may be transmitted.

When phase B ends , the DTE transmits the image data length, the telephone number (transmitting station telephone number) of the own apparatus (own station), and the image data to the facsimile adapter. The controller 2 uses these data as phase C data, and transmits a carrier wave modulated with the phase C data to the line. Note that the DTE may transmit data to the facsimile adapter in the format illustrated in FIG. 3, or the control unit 2 in the facsimile adapter transmits the telephone number of the own device (own station), the length of the image data from the DTE. The information indicating the size and the image data may be received, and the data in the format illustrated in FIG. 3 may be generated. When the control unit 2 creates data in the format as illustrated in FIG. 3, if the telephone number of the own device (own station) is registered in the facsimile adapter in advance, the DTE transmits the data of the own device (own station). It is not necessary to receive information indicating a telephone number.

  In the receiving-side facsimile adapter, the storage unit 12 stores one or more telephone numbers in advance. These telephone numbers are telephone numbers that indicate devices that are allowed to receive image data therefrom. Further, in this embodiment, it is assumed that whether or not to execute the determination process for accepting or rejecting the image data is set based on the received telephone number.

  FIG. 4 is a flowchart showing the operations of the control unit 2 and the detection unit 11 of the facsimile adapter on the receiving side in phase C. In the receiving side facsimile adapter, the detection unit 11 inputs the phase C data from the demodulation unit 9 and checks whether or not the first data is EOL (step S11). If the first data is not EOL, it is assumed that the image data length and the transmitting station telephone number are added to the head of the phase C data, and the 0th to 14th data of the phase C data are extracted and the RAM (FIG. 1 is temporarily stored (not shown in FIG. 1) (step S12).

  Then, it is confirmed whether or not it is set to execute a determination process of whether to accept or reject the reception of the image data (step S13). If it is set not to execute the determination process, the process proceeds to step S18. If it is set to execute the determination process, it is checked whether there is a telephone number stored in the storage unit 12 that matches the received transmission station telephone number (step S14). If there is a match, the process proceeds to step S18.

  If there is no match, the control unit 2 is notified of a mismatch signal. When the mismatch signal is input, the control unit 2 causes the line relay 10 to disconnect the connection between the line and the line interface unit 5. That is, the line is disconnected (step S16). In addition, the control unit 2 transmits a signal indicating that the line has been disconnected due to a telephone number mismatch to the DTE via the DTE interface unit 1 (step S17).

  While the detection unit 11 performs the processes of steps S11 to S15, the phase C data is also input to the control unit 2 from the demodulation unit 6. In step S18, the detection unit 11 outputs a coincidence signal to the control unit 2, and when the coincidence signal is input, the control unit 2 sends the image data input from the demodulation unit 6 to the DTE via the DTE interface unit 1. Send.

  When the first data of the phase C data is EOL, the detection unit 11 confirms whether or not it is set to execute a determination process of whether to accept or reject the reception of the image data ( Step S19). If it is set not to execute the determination process, the process proceeds to step S18. If it is set to execute the determination process, the detection unit 11 notifies the control unit 2 of a signal indicating that the transmission station telephone number has not been received. Upon receiving the notification, the control unit 2 causes the line relay 10 to disconnect the line from the line interface unit 5. That is, the line is disconnected (step S20). In addition, the control unit 2 transmits a signal indicating that the line has been disconnected due to the telephone number mismatch to the DTE via the DTE interface unit 1 (step S21).

  As described above, in this embodiment, the transmission side facsimile adapter adds the transmission station telephone number to the image data and transmits the image data. The facsimile adapter on the receiving side allows image data to be received if a telephone number that matches the received transmitting station telephone number is stored in advance. Also, when a telephone number that matches the transmitting station telephone number is not stored and when the transmitting station telephone number is not received, the line is disconnected and reception of image data is rejected. Accordingly, it is possible to reduce the chance of receiving unnecessary image data. The transmitting station telephone number is not included in the signal transmitted / received in phase B, but is included in the signal transmitted / received in phase C. Therefore, there is no need to change the general facsimile procedure signal. In addition, the transmission station telephone number is transmitted and received at a higher speed than when the transmission station telephone number is included in the signal transmitted and received in phase B.

  In this embodiment, the line is disconnected when the transmission station telephone number is not included in the phase C data (see steps S11 and S20), but the transmission station telephone number is included in the phase C data. If not, the line connection may be maintained. Since the facsimile apparatus to which the present invention is not applied does not include the transmitting station telephone number in the phase C data, the reception of the image data from such a facsimile apparatus can be permitted when the line connection is maintained. .

Embodiment 2. FIG.
FIG. 5 is a block diagram showing a configuration example of a second embodiment of a facsimile apparatus according to the present invention. Hereinafter, an apparatus configured as illustrated in FIG. 5 is referred to as a facsimile adapter. The configuration shown in FIG. 5 is a configuration in which display means 13 connected to the control unit 2 is added to the configuration shown in FIG. The display means 13 is installed so that a user of the facsimile apparatus can visually recognize it. As the display means 13, for example, an LCD is used. Further, as the display means 13, a DTE display unit may be used. Note that the interrupting means for interrupting the reception of the image data when the interrupting instruction is input after the identification information is displayed on the display means is realized by the control unit 2.

  The processing related to phase B is the same as in the first embodiment. FIG. 6 is a flowchart showing the operations of the control unit 2 and the detection unit 11 of the facsimile adapter on the receiving side in phase C. In the receiving side facsimile adapter, the detection unit 11 inputs the phase C data from the demodulation unit 9 and checks whether or not the first data is EOL (step S31). If the first data is not EOL, it is assumed that the image data length and the transmission station telephone number are added to the beginning of the phase C data, and the 0th to 14th data of the phase C data are output to the control unit 2. (Step S32). The control unit 2 displays the transmission station telephone number included in the phase C data on the display means 13 (step S33). In addition, the control unit 2 transmits the image data input from the demodulation unit 6 to the DTE via the DTE interface unit 1 (step S34).

  For example, when the user of the facsimile apparatus determines that the transmitting station telephone number displayed on the display means 13 is a telephone number that does not desire to receive image data from the transmitting station telephone number, for example, the user refuses reception to the DTE operation unit. Enter the information indicating. The information is transmitted from the DTE to the facsimile adapter. When receiving the information, the control unit 2 causes the line relay 10 to disconnect the line from the line interface unit 5 while the demodulating unit 6 outputs the image data. That is, the line is disconnected and reception of the image data is interrupted.

  When the first data of the phase C data is EOL, the detection unit 11 notifies the control unit 2 that the transmitting station telephone number has not been received. Upon receiving the notification, the control unit 2 displays information indicating that the transmitting station telephone number has not been received on the display means 13 (step S35). Then, control goes to a step S34.

  In this embodiment, since the transmitting station telephone number is displayed on the display means 13, the line can be disconnected based on the judgment of the user. That is, the line can be disconnected when the user views the display on the display means 13 and determines that an erroneous transmission or the like has been made. Further, there is no need to change a general facsimile procedure signal, and the transmitting station telephone number can be transmitted / received at a higher speed than when the transmitting station telephone number is included in the signal transmitted / received in the phase B. What is obtained is the same as in the case of the first embodiment.

  Further, the second embodiment may be combined with the first embodiment. That is, in the first embodiment, the control unit 2 may display the received transmitting station telephone number on the display unit 13 and execute the process of step S34 instead of the process of step S18.

  In each of the above embodiments, the detection unit (detection unit) 11 and the control unit (control unit) 2 are provided independently, but the control unit 2 has the function of the detection unit 11. It may be configured.

  In each of the above embodiments, the telephone number is used as identification information (identification information assigned to the own apparatus) for identifying the facsimile apparatus on the transmission side. However, it is unique data that can identify the facsimile apparatus. If there is, data other than the telephone number may be used.

  The present invention can be applied to an application for preventing erroneous reception of image data in a facsimile apparatus, for example, an application for preventing wasteful use of paper or a recording material in a state where an answering machine is set.

1 is a block diagram showing a configuration example of a first embodiment of a facsimile apparatus according to the present invention. It is explanatory drawing which shows the mode of transmission / reception of a general facsimile procedure signal. It is explanatory drawing which shows an example of the format of image data. 10 is a flowchart showing operations of a control unit and a detection unit on the reception side in phase C. It is a block diagram which shows the structural example of 2nd Embodiment of the facsimile apparatus by this invention. 10 is a flowchart showing operations of a control unit and a detection unit on the reception side in phase C.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 DTE interface part 2 Control part 3 Modulation part 4 Transmission filter 5 Line interface part 6 Demodulation part 7 Reception filter 8 Carrier detection part 9 Ringer detection part 10 Line relay 11 Detection part 12 Storage part 13 Display means

Claims (5)

The identification information assigned to the own device, the image data transmitting means for transmitting the phase C data added to predetermined position in front of the EOL first occurrence of definitive to image data,
Storage means for storing identification information in advance;
An identification information extracting means for confirming whether or not the leading data in the received phase C data is EOL, and extracting identification information from the predetermined position when it is confirmed that the data is not EOL ;
The identification information extracted by the identification information extraction means and the identification stored in the storage means when the processing for determining whether or not to allow the reception of the image data based on the identification information is executed . allow reception of image data when the information and the match, to interrupt the reception of the image data when the identification information stored does not match in said storage means and identification information the identification information extraction means has extracted A determination means ;
When the identification information extraction unit confirms that the head data in the phase C data is EOL, it is set to execute a process for determining whether or not to accept the image data based on the identification information. A facsimile apparatus characterized by comprising reception permission / refusal means for interrupting reception of image data . Display means for displaying the identification information is identification information extracting means extracted,
Interruption means for interrupting reception of image data when an interruption instruction is input after the identification information is displayed on the display means.
The facsimile apparatus according to claim 1 . The identification information assigned to the own apparatus, a signal receiving method in a facsimile apparatus for transmitting and receiving phase C data added to predetermined position in front of the EOL first occurrence of definitive to image data,
Stores identification information assigned to a device that allows reception of image data from it,
Extract identification information from the received Phase C data,
Confirm whether the head data in the received phase C data is EOL, and if it is not EOL, extract identification information from the predetermined position ,
When it is set to execute processing for determining whether or not image data reception is permitted based on the identification information, if the extracted identification information matches the stored identification information, the image data Reception is permitted, and if the extracted identification information does not match the stored identification information, reception of the image data is interrupted,
When it is set to execute a process for determining whether or not reception of the image data is permitted based on the identification information when it is confirmed that the head data in the received phase C data is EOL, the image data A signal receiving method characterized by interrupting reception of the signal. To display the extracted identification information out,
After the identification information is displayed, reception of image data is interrupted when an interrupt instruction is input.
The signal receiving method according to claim 3 . First to claim 3 or claim 4 signal receiving method according to configure the local telephone number in the predetermined position before the identity of the EOL appearing in image data.

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