JP2652829B2 - Facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus for transmitting document information according to a predetermined transmission mode.

[0002]

2. Description of the Related Art When an original is set on a facsimile apparatus and original information is transmitted to a receiving facsimile apparatus via a telephone line, for example, the first original information is transmitted in a normal mode of normal image quality. Even if the operator changes the transmission mode during transmission of the first document and attempts to transmit the second document in the fine mode with good image quality, it is determined that the receiving facsimile machine does not have the processing capability. In such a case, the transmitting facsimile automatically modifies the transmission mode to the normal mode. That is, in this case, the transmission-side facsimile apparatus transmits an EOM signal indicating the end of the message to the reception-side facsimile apparatus prior to the transmission of the second document as shown in the operation sequence of FIG. The device returns a DIS signal indicating modem transmission speed, sub-scanning line density information, and the like. Then, the processing capability of the receiving-side facsimile apparatus is determined from the DIS signal, and if it is determined that the processing cannot be performed even if the transmission is performed in the fine mode, the transmission is automatically performed in the normal mode.

[0003]

In order to change the transmission mode of the original of the next page during transmission of the original, conventionally, an EOM signal is transmitted to the receiving-side facsimile apparatus regardless of whether the transmission mode can be changed. By receiving the DIS signal returned from the receiving-side facsimile apparatus and determining whether or not the transmission mode has been changed, there is a problem that communication time is required.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a storage means for storing capability information of a receiving apparatus received at the start of transmission of a document, and transmission of the document for each page. Detecting means for detecting the presence or absence of a transmission mode change instruction at the time of termination , and whether or not the transmission mode can be changed when the transmission mode change instruction is detected are stored in the storage means.
Determining means for determining based on ability information; and said determining means
Indicates that the transmission mode is not changed when it determines that the transmission mode cannot be changed
Transmitting means for transmitting a signal to the receiving device .

[0005]

The change of the transmission mode is determined based on the capability information (DIS signal) received from the receiving apparatus at the time of transmitting the original.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the facsimile apparatus of the present invention. In the figure, 1 is a CPU for controlling the entire facsimile apparatus, 2 is a modem for transmitting image information of an original or the like, 3 is an image sensor for reading information of the original, 4 is a head for printing, and 5 is, for example, image information. A mode change switch for instructing whether to transmit in fine mode with good image quality or in normal mode with normal image quality, 6 is a dial key, 7 is a communication key for transmitting image information, 8 is a memory, Reference numeral 9 denotes a display unit for performing various displays, 10 denotes a speaker, L denotes a telephone line, and SW denotes a switch for closing a DC loop of the telephone line L.

When image information such as an original is transmitted to a receiving facsimile using such a facsimile, the original is first set at a predetermined position, and the dial key 6 is operated to input a destination number. Then, when the communication key is pressed, the switch SW is turned on, the telephone line L is closed, and the dial number of the input partner is transmitted to the line L. Then, the receiving facsimile apparatus is called, and when the receiving facsimile apparatus responds to the call, the image information of the original read by the image sensor 3 is transmitted to the modem 2.
Is transmitted to the receiving-side facsimile apparatus in a predetermined transmission mode via the.

Next, FIG. 3 is a sequence diagram showing the operation of the facsimile apparatus configured as described above. That is,
When original information is transmitted by a transmission-side facsimile apparatus (hereinafter, transmission-side apparatus), a DIS signal is transmitted from a reception-side facsimile apparatus (hereinafter, reception-side apparatus). The DIS signal is a digital identification signal composed of parameters such as the transmission speed, sub-scanning line density, and two-dimensional encoding capability of the modem, and indicates the capability of the receiving device.

[0009] These parameters are received and stored by the transmitting apparatus, and a DCS signal as a response signal to the parameters is returned to the receiving apparatus, and then a TCF signal is transmitted. This T
The CF signal is called a training check signal and checks whether or not the line can be used at the modem speed specified by the DCS signal. When receiving the CFR signal indicating that the TCF signal has been normally received by the receiving device, the first document information is transmitted to the receiving device, and the transmission of the first document is completed. If there is a next original, an MPS signal indicating that there is a subsequent original and there is no change in the sub-scanning line density or the like is transmitted.

In this case, even if the mode is switched from the normal mode to the fine mode by the operator during the transmission of the first document information, the capability of the receiving apparatus is determined from the parameters of the DIS signal stored at the start of the transmission of the document information. it can. As a result, when it is determined that the document information transmitted in the fine mode cannot be received, an MPS signal for transmitting in the normal mode similar to the transmission mode of the document transmitted on the first sheet is transmitted to the receiving side device.

When an MCF signal as a reception confirmation signal is received from the receiving device, the second original is transmitted in the normal mode. After that, the transmission of the second document is completed. If there is no next document, an EOP signal indicating the end of document information transmission is transmitted, and the MCF from the receiving side device is transmitted.
After confirming the signal, D indicating a disconnection command to the receiving device
After transmitting the CN signal, the process ends.

FIG. 2 is a flowchart showing the operation of the CPU 1 in the facsimile machine. The detailed operation of the facsimile apparatus of the present invention will be described based on this flowchart. When the facsimile apparatus is the transmitting apparatus, the reception of the DIS signal from the receiving apparatus is determined in step 50 before transmitting the document information. Then, the parameters of the received DIS signal are stored in the memory 8 (step 51), and the transmission mode is set in a DCS parameter described later (step 52).
In step 3, the DCS signal is transmitted to the receiving device. The DCS signal is a signal that responds to the DIS signal and instructs the receiving side apparatus on the transmission speed, sub-scanning line density, two-dimensional encoding capability, and the like of the modem. Then, at step 54, T is checked to see if the line is available at the specified modem speed.
A CF signal is transmitted to the receiving side device, and a CFR signal indicating normal reception or an FT indicating abnormal reception with respect to the TCF signal is transmitted.
The reception of the T signal is determined in steps 55 and 56.

When the FTT signal is received from the receiving apparatus, the process returns to step 52 to transmit the DCS signal again, and when the CFR signal is received, the process proceeds to step 57. In step 57, the first document information read by the image sensor 3 is transmitted to the receiving apparatus, and when the transmission of the first document information is completed, step 5 is performed.
In step 8, it is determined whether there is a document on the next page. If there is an original of the next page, it is determined in step 60 whether or not there is an instruction to change the transmission mode by operating the mode change switch 5 by the operator.

If the instruction to change the transmission mode is determined to be "Y" in step 60, it is next determined in step 61 whether or not the transmission mode can be changed from the DIS parameters stored in the memory 8, and this is determined. If it is not possible, for example, the transmission mode instructed to the fine mode is automatically corrected to the normal mode as before (step 62), and in step 63 the MPS indicating that there is a document of the next page and that the transmission mode has not been changed. The signal is transmitted to the receiving side device, and the MCF signal from the receiving side device is received in step 64, and the process returns to step 57 to transmit the document information of the next page.

Also, it is determined from the stored DIS parameters that the transmission mode can be changed.
If it is determined that the transmission mode is changed, an EOM signal for terminating the message is transmitted to the receiving side device (step 70), and an MCF signal as a confirmation signal thereof is received from the receiving side device (step 71). ), And returns to step 50 to receive the DIS signal again. If the operator does not give an instruction to change the transmission mode and the answer is "Y" in step 61, the processing after step 63 is executed, and the process returns to step 57 to transmit the document information of the next page to the receiving apparatus. I do.

In this way, the document information of each page is sequentially transmitted to the receiving apparatus. As a result, when there is no document to be transmitted and it is determined "N" in step 58, an EOP signal indicating the end of document information transmission is transmitted. Transmit to the receiving device (step 8
0) together with the MCF signal from the receiving device (step 81), and D indicating a disconnection command to the receiving device.
After transmitting the CN signal (step 82), the process ends.

As described above, according to the present invention, it is determined whether or not the change to the designated transmission mode is possible from the DIS parameter received before the start of the document information transmission. Is transmitted to the receiving side device. As a result, E
Since the conventional procedure of transmitting the OM signal to the receiving side device and receiving the DIS parameter returned from this device to determine whether the transmission mode can be changed is omitted, the communication time is reduced.

[0018]

As described above, according to the present invention, whether or not the transmission mode can be changed is determined based on the capability information (DIS signal) received from the receiving apparatus at the time of transmitting a document. When determining whether or not the change is possible, an EOM signal is transmitted to the receiving side device and DI
The conventional procedure of receiving the S signal is omitted, and as a result, the communication time is shortened.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a facsimile apparatus according to the present invention.

FIG. 2 is a flowchart showing an operation of the facsimile machine.

FIG. 3 is an operation sequence diagram of the facsimile apparatus.

FIG. 4 is an operation sequence diagram of the conventional facsimile machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 Modem 3 Image sensor 4 Head 5 Mode change switch 6 Dial key 7 Communication key 8 Memory 9 Display part 10 Speaker

Claims (1)

(57) [Claims] 1. A facsimile apparatus for reading information of a placed document and transmitting the information to a receiving device according to a predetermined transmission mode, wherein a storage device stores capability information of the receiving device received at the start of transmission of the document. means, detecting means for detecting the presence or absence of change instruction of the transmission mode when sending the end of each page of the document, feeding when the change instruction of the transmission mode is detected
Whether the communication mode can be changed is stored in the storage means.
Determining means for determining based on ability information; and said determining means
Indicates that the transmission mode is not changed when it determines that the transmission mode cannot be changed
A facsimile apparatus comprising: a transmitting unit that transmits a signal to a receiving apparatus.