JP3141184B2 - Facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is in the G3 mode and the G4 mode facsimile (hereinafter, FAX) coding handwritten facsimile apparatus related to (FAX apparatus), in particular receiving <br/> signal the image signal having a communication function A facsimile machine that performs conversion.

[0002]

2. Description of the Related Art Generally, G3 FAX is used for transmission.
The original signal obtained by scanning the original with the image sensor and performing photoelectric conversion is converted into 1 (black) and 0 (white) by a binarization circuit.
And temporarily store it in the line memory. After that, the signal is read from the line memory, and the encoding unit uses the continuity of white or black and the correlation between lines to make MR (m
modified READ) method and MH (modified
ed Huffman), and performs redundancy suppression encoding processing. After being adjusted to match the line speed by the buffer memory, the data is transmitted to the line via a modem, so that an A4 size document can be transmitted in about one minute. In the case of G4 FAX, the basic configuration is almost the same as that of G3 FAX. However, since the line is high-speed (64 kbit / s) and almost no error occurs, the redundancy suppression coding method is not used. , A highly compressed MMR (modified MR) method is applied, and therefore, the size of an A4 size document is approximately 16 lines / mm.
In high-definition mode and at a high speed of about 10 seconds. A handwritten FAX device which has such a FAX communication function in both the G3 and G4 modes, and displays the received image signals of a plurality of pages, performs a handwritten input on the image signals, corrects them, and transfers them to another device. In the case of, for example, G3
The image signal received in the mode is transmitted to the partner device in the G3 mode even if the partner device is a G4 FAX device.

[0003]

A conventional handwritten FAX apparatus displays a received image signal, adds the image signal to the image signal, and transmits it to another apparatus, even if the other party is a G4 FAX apparatus.
Since the transmission is performed in the mode, the time required for the FAX communication is long, which causes problems such as an increase in communication cost.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a G3 mode receiving and displaying on a display.
Image processing means for executing predetermined image processing when the received image signal is corrected, and encoding all image signals including the image signal processed by the image processing means into a G4 mode image signal. It is provided with coding conversion means for conversion, and transmission means for transmitting an image signal coded and converted by the coding conversion means to an ISDN line. Further, when the received image signal is received, an image signal corresponding to the first document is displayed on a display.

[0005]

[Function] Received image in G3 mode being received and displayed on the display
If the modification is made to the items shall be sent to the encoding conversion and ISDN line to G4 mode image signal subjected to predetermined image processing. As a result, when the transmission destination is a G4 fax machine, the image can be transmitted as a G4 mode image signal.
FAX communication time is reduced. When an image signal is received, an image signal corresponding to the first document is automatically displayed. Therefore, a received image signal displayed on the display unit which is operated when correcting the received image signal is displayed. Operation can be omitted.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a facsimile apparatus ( handwriting F) according to the present invention.
FIG. 2 is a block diagram illustrating an example of an (AX device ) . Here, the device is connected to an ISDN line and has a G3 and G4 mode fax communication function. That is, in FIG.
Reference numeral 1 denotes a CPU that performs all control of the apparatus.
M3, a DMA controller 4 for transferring data between memories, a port control unit 5 for performing input / output control on each unit (not shown), and a DRAM control unit for controlling input / output of data to / from a DRAM 6, which is a memory for storing image signals and the like. 7, a SCSI interface unit 9 which is an interface of a display / input unit 8 having a display and a touch panel, a serial interface unit 10 for performing serial communication, IS
A B channel control unit 11 for performing G4 mode fax communication via a DN line, a switching unit 12, and a modem control unit 13 for performing G3 mode fax communication are connected.

Reference numerals 14 and 15 denote host buses, respectively.
An image memory bus 16 for compressing an image signal received and stored in the DRAM 6, and for expanding an image signal read from the DRAM 6 and transmitted;
The image compression / decompression unit 16 is connected to each unit including the CPU 1 via the host bus 14, the image memory bus 15, and the system bus 2. 17 is a communication processing unit,
Reference numeral 18 denotes an ISDN line.

[0008] As described above, the present apparatus is provided with the G3 and G4 mode facsimile communication functions.
In the case of communication, the image compression / expansion unit 16 uses the continuity of white or black of the image signal and the correlation between lines to generate M
While performing the redundancy suppression coding process based on the R system or the MH system and storing the compressed image signal in the DRAM 6, the G4
In the case of the FAX communication in the mode, since the signal transmission speed of the line 18 is high (64 kbit / s) and almost no error occurs, the redundancy suppression coding processing is performed based on the MMR method with higher compression. The data is stored in the DRAM 6. The size and G3 of each page of the document are stored in the DRAM 6 together with the image signal of the document.
Alternatively, the G4 mode, line density, and the like are stored.

Next, the general operation of the present apparatus will be described. In this facsimile apparatus, when an image signal is transmitted to a partner apparatus, a display and a touch panel having a display and a touch panel are provided.
When the image signal of the handwritten document from the input unit 8 is input to the image compression / expansion unit 16 via the SCSI interface unit 9, the image compression / expansion unit 16 compresses the handwritten image signal according to the MMR method under the instruction of the CPU 1. I do. The compressed image signal is transferred to the DRAM 6 via the DRAM control unit 7 by the data transfer control of the DMA controller 4, while the CPU 1 executes a predetermined communication protocol via the line 18 to confirm the connection with the called device. Then D
The image signal stored in the RAM 6 is transferred to the B channel controller 11 via the DRAM controller 7. As a result,
The transferred image signal is transmitted to the partner device via the switching unit 12, the communication processing unit 17, and the line 18.

[0010] When the partner device is a G3 fax machine, the modem control unit 1 via the communication processing unit 17 and the switching unit 12.
3, the image signal of the G3 mode received in
The image signal compressed in accordance with the R system or the MH system is transferred to the DRAM 6 via the DRAM control unit 7 and, when displaying the image signal, transferred to the image compression / expansion unit 16 to expand (decompress) the image signal. ) Is performed and displayed on the display / input unit 8 via the SCSI interface unit 9. When the image signal of the G3 mode original stored in the DRAM 6 is transferred to another device as it is or when the original is edited and transferred by the display / input unit 8, the DRA is used.
The image signal read from M6 or this image signal and the added image signal are sent to the image compression / decompression unit 1 under the instruction of the CPU 1.
In step S6, the image data is coded and converted by the MMR method and transferred to the partner device via the B-channel control unit 11, the switching unit 12, the communication processing unit 17 and the line 18 as an image signal in G4 mode.
In this case, since this image signal is transmitted at a high speed about six times as fast as in the case of the G3 mode, the FAX communication time is greatly reduced.

FIG. 2 is a flowchart of the operation of the CPU 1 of the apparatus according to the embodiment, and the detailed operation of the apparatus according to the embodiment will be described based on the flowchart. ISDN line 18
In response to an incoming call from the other party's FAX device via, the process in step 100 executes a reception start process for receiving image data (image signal) from the device. When the image data in the G3 mode corresponding to the n sheets of the original is received from the partner apparatus and the storage in the DRAM 6 is completed (step 101), the line 18 is disconnected (step 102), and the received image of the first original is received. The data is read from the DRAM 6, decoded (step 103), and displayed on the display / input unit 8 (step 104). When decoding the image data in step 103, the image data is thinned to display the image data on an LCD or the like.

Here, the display screen is sequentially selected by operating a not-shown previous page key, next page key, or the like. For example, image data corresponding to the n-th document is displayed on the display / input unit 8. A selection operation for displaying is performed and step 10 is performed.
If the determination at 5 is "Y", the received image data of the nth document is decrypted (step 106) and displayed on the display / input unit 8 (step 107). The received image data is displayed on the display / input unit 8 in this manner, and when the received image data is to be corrected, the touch pen of the display / input unit 8 is used. If there is an input from the touch pen, the “N” in step 105 and the “N” in step 110 are performed, and the “input with touch pen in image display area” in step 111 becomes “Y”.

In this case, an image processing for adding the portion input by the touch pen to the first image data is performed (step 112), and when this image processing is completed, a message “Save?” Is displayed. When the predetermined key is operated in response to this, the determination of “save” in step 113 becomes “Y”, and the image data processed in step 112 is converted into G4 mode image data (step 114). The converted image data is stored in a DRAM
6 (step 115). When the received image data is modified in this manner, the image data corresponding to one document is sequentially displayed on the display / input unit 8 and modified.

When transmitting corrected image data or uncorrected image data collectively, the data is transmitted by operating a transmission key (not shown). That is, when the transmission key is operated, “batch transmission” in step 110 becomes “Y”. In this case, all the image data is read out from the DRAM 6 and G
Encoding and conversion into 4 mode image data (step 12
0). Then, in step 121, it is determined whether or not the FAX device of the transmission partner is a G3 FAX device, and if the transmission partner is a G3 FAX device, all image data is coded and converted into image data of G3 mode (step 122). The transmission processing of the converted image data is executed in step 123. If the transmission destination is not a G3 fax machine, the image data in the G4 mode is transmitted. In this way, the present device
Fax of transmission destination even when image data of mode is received
If the device is a G4 FAX device, it can be transmitted as G4 mode image data, so that the FAX communication time can be greatly reduced.

[0015]

As described above, according to the present invention,
For the G3 mode received image signal that is received and displayed on the display
If correction is performed, the image signal is encoded and converted into a G4 mode image signal after a predetermined image processing and transmitted to the ISDN line. Therefore, if the transmission destination is a G4 fax device, the G4 mode image signal is used. As a result, the facsimile communication time can be shortened, and the communication cost can be reduced. Also,
When an image signal is received, the image signal corresponding to the first document is automatically displayed. Therefore, when correcting the received image signal, an operation for displaying the received image signal on the display is required. Can be omitted.

[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 the operation of the above device.

[Explanation of symbols]

 Reference Signs List 1 CPU 4 DMA controller 6 DRAM 8 display / input unit 11 B channel control unit 12 switching unit 13 modem control unit 16 image compression / decompression unit 17 communication processing unit 18 line

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroaki Makino 2-3-2 Shimomeguro, Meguro-ku, Tokyo Inside Tamura Electric Works, Ltd. (72) Inventor Noritaka Mizutani 2-chome, Shimomeguro 2-chome, Meguro-ku, Tokyo No. 3 Inside Tamura Electric Works, Ltd. No. 6 Inside Nippon Telegraph and Telephone Corporation (72) Toshiki Haga Inventor 5- 10-27 Minami-Azabu, Minato-ku, Tokyo Inside Anritsu Corporation (72) Inventor Yoshimasa Ashizawa 5- 10-27 Minami-Azabu, Minato-ku, Tokyo Inside Anritsu Corporation (72) Inventor Tadashi Suzuki 1-41 Kugayama, Suginami-ku, Tokyo Inside Iwasaki Communication Equipment Co., Ltd. (56) References Hirai 3-39964 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 1/32-1/34 H04N 1/00-1/00 108

Claims (2)

(57) [Claims] 1. It has a facsimile communication function of G3 mode and G4 mode, displays a received image signal received via an ISDN line on a display by a predetermined operation, and corrects the displayed image signal. in the facsimile apparatus having a handwriting facsimile function of transmitting to the ISDN line, the received image processing means for performing a predetermined image processing in the case where modifications to received image signal of the G3 mode being displayed on the display unit is performed Encoding conversion means for encoding and converting all image signals including the image signals processed by the image processing means into G4 mode image signals, and converting the image signals encoded and converted by the encoding conversion means into the ISDN A facsimile apparatus comprising: a transmitting unit that transmits data to a line. 2. The facsimile apparatus according to claim 1, wherein an image signal corresponding to a first document is displayed on the display when the received image signal is received.