JP2001257894A - Image communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image communication device which enables a receiver to notify a transmitter that an image signal of inch-based resolution is preferable when color information is received and an image signal of millimeter-based resolution is preferable when black-and-white binary information is received, can receive an image signal of proper resolution for color and black-and-white binary information, and can, therefore, receive and print images of high picture quality. SOLUTION: This image communication device capable of color facsimile communication has a 1st notification means which notifies the transmitter which of millimeter-based resolution and inch-based resolution is preferable when black-and-white binary information is received and a 2nd notification means which notifies the transmitter which of the millimeter-based resolution and inch-based resolution is preferable when color information is received.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image communication apparatus such as a facsimile apparatus, and more particularly to an image communication apparatus capable of communicating color information.

[0002]

2. Description of the Related Art In a conventional facsimile machine, D
The 44.45 bit of the IS signal FIF indicates to the transmitter whether the reception based on the millimeter-based resolution or the reception based on the inch-based resolution is preferable.

[0003] As described above, whether the reception based on the millimeter-based resolution or the reception based on the inch-based resolution is preferable is notified to the transmitter. Is also the same. Here, the FIF of the target DIS signal is 15
Bits and 43 bits.

[0004]

However, when receiving color information, it is preferable to receive an image signal at an inch-based resolution, and when receiving black and white binary information,
Although there is a facsimile apparatus that preferably receives an image signal at a millimeter-based resolution, the current model has a problem that the above information cannot be notified to a transmitter.

[0005] The above problem also occurs in image communication devices other than facsimile devices in the same manner as described above.

According to the present invention, an image signal having an inch-based resolution is preferred when color information is received, and an image signal having a millimeter-based resolution is preferred when binary monochrome information is received. To provide an image communication device capable of notifying a transmitter from a device, receiving an image signal at an appropriate resolution in color and black and white binary, and therefore capable of receiving / printing with high image quality. With the goal.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an image communication apparatus capable of color facsimile communication, in which the resolution in receiving monochrome binary information is determined based on whether a millimeter base or an inch base is preferable. A first notifying means for notifying the transmitter, and a second notifying means for notifying the transmitter whether the resolution based on receiving color information is preferably a millimeter-based or an inch-based. An image communication device having

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a facsimile apparatus FS1 according to one embodiment of the present invention.

An NCU (network control unit) 2 connects to a terminal of the line in order to use the telephone network for data communication and the like.
It controls connection of the telephone exchange network, switches to a data communication path, and holds a loop. The NCU 2 connects the telephone line 2a to the telephone (CML off) or connects the telephone line 2a to the facsimile machine (CML on) under the control of the bus 26. In a normal state, the telephone line 2a is connected to the telephone 4 side.

The hybrid circuit 6 separates the transmission system signal and the reception system signal, sends the transmission signal from the addition circuit 12 to the telephone line 2a via the NCU 2, and receives the signal from the other party via the NCU 2. , To the modem 8 via the signal line 6a.

The modulator / demodulator 8 is based on ITU-T Recommendation V. 8,
V. 21, V.I. 27ter, V.I. 29, V.I. 17, V.I.
34, a modulator and a demodulator that performs modulation and demodulation based on C.34.
Each transmission mode is designated by the control of the bus 26.
The modulator / demodulator 8 receives a transmission signal from the bus 26, outputs modulated data to the signal line 8a, receives a received signal output to the signal line 6a, and outputs demodulated data to the bus 26.

The calling circuit 10 inputs telephone number information in response to a signal from the bus 26, and sends DTMF to the signal line 10a.
Is output.

The addition circuit 12 receives the information of the signal line 8a and the information of the signal line 10a, and adds the result of the addition to the signal line 12a.
output to a.

The read circuit 14 outputs read data to the bus 26.

The recording circuit 16 sequentially records information output to the bus 26 line by line.

The memory circuit 18 includes a work memory (R
AM), and further used to store raw information or encoded information of read data, and to store received information or decoded information via the bus 26.

The operation unit 20 includes a one-touch dial, speed dial, numeric keypad, * key, # key, start key,
There are a stop key, a set key, a color transmission selection key, and other function keys. Pressed key information is output to the bus 26. The operation unit 20 has a display unit for inputting and displaying information output to the bus 26.

A CPU (central processing unit) 22 controls the entire facsimile apparatus FS1 and executes a facsimile transmission control procedure.
4 is stored.

FIG. 2 shows DIS / DT in the above embodiment.
FIG. 4 is a diagram illustrating a specific example of a C signal and a FIF of a DCS signal.

Here, the 44 and 45 bits correspond to the current IT
The UT recommendation does not specify the information to be handled. However, in the above-described embodiment, regarding the 44 and 45 bits, the DIS / DTC signal is not received when monochrome information is received, and the DCS signal is received. The limitation of transmitting black and white information has been added.

In addition, when an X bit is newly provided and the color information is received for the DIS signal, an inch-based resolution is preferable. For the DCS signal, when the color information is transmitted, the resolution selection (“0”) is selected. Indicates a millimeter base, and “1” indicates an inch base.

In addition, when X + 1 bits are newly provided and the color information is received with respect to the DIS signal, it is preferable that the resolution based on the millimeter system is desirable.
n't care.

The 15, 43, and 97 bits other than the above are
The same as specified in the TU-T recommendations.

FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG.
It is a flowchart which shows the control operation in the said Example.

Here, the target resolution is 200 dpi in the main scanning direction, 200 dpi in the sub scanning direction, or 8 pel / mm in the main scanning direction, and 7.7 lin in the sub scanning direction.
e / mm, 400 dpi in the main scanning direction, 400 dpi in the sub-scanning direction, or 16 pel / m in the main scanning direction
m, and the sub-scanning direction is 15.4 line / mm.

In the above-described resolution, the receiver desires a millimeter-based resolution when receiving monochrome binary information, and desires an inch-based resolution when receiving color information.

In S2, the memory 18 is initialized via the bus 26, in S4, the display of the operation unit is cleared via the bus 26, and in S6, the memory 18 is initialized via the bus 26.
Turn off the CML of NCU2.

In S8, the operation unit 20 is connected via the bus 26.
Is input, and it is determined whether or not facsimile transmission is selected. If facsimile transmission is selected, the process proceeds to step S14, and if facsimile transmission is not selected, the process proceeds to step S10.

In S10, it is determined whether or not facsimile reception has been selected. If facsimile reception has been selected, the process proceeds to step S60, and if facsimile reception has not been selected, the process proceeds to step S12 to perform other processing.

In S14, the operation unit 2 is connected via the bus 26.
0 is input, and it is determined whether or not the color communication is selected. If the color communication is selected, the main scanning is performed at 200 d.
In a state where the resolution of 200 dpi is selected for the sub-scanning and the sub-scanning, the process proceeds to S16. If the color communication is not selected, the main scanning is 8 pel / mm and the sub-scanning is 7.7 line.
/ Mm resolution is selected and step S
Proceed to 38.

In S16, the NCU 2
Is turned on, and in S18, a call is made to the designated destination using the calling circuit 10 via the bus 26, and S20 is called.
Now, perform the previous procedure.

Here, the FIF 15, 6 of the DIS signal
The 8 and 69 bits are set to “1”.

At S22, it is determined whether or not the X bit of the FIF of the DIS signal is "1".
If the X bit of F is “1”, the process proceeds to step S24. If the X bit of the FIF of the DIS signal is not “1”, the process proceeds to step S30.

At S24, the remaining pre-procedure is executed, and here, the FIF 15, 68, 69 and the X bit of the DCS signal are set to "1".

In step S26, the image signal of the color information is transmitted at 200 dpi in the main scanning and at 200 dpi in the sub-scanning.
At 8, the post-procedure is executed.

At S30, X + 1 of the FIF of the DIS signal
It is determined whether the bit is “1” or not. If the X + 1 bit of the FIF of the DIS signal is “1”, step S3
2. The X + 1 bit of the FIF of the DIS signal is "1".
If not, the process proceeds to step S24.

In step S32, the remaining pre-procedure is executed. Here, bits 15, 68, and 69 of the FIF of the DCS signal are set to "1", and the X bit is set to "0".

In S34, an image signal of color information is transmitted at 8 pel / mm in the main scanning and at 7.7 line / mm in the sub-scanning. In S36, a post-procedure is executed. In S38, the NCU 2 is transmitted via the bus 26. Is turned on, and in S40, a call is made to the designated destination using the calling circuit 10 via the bus 26, and in S42, the pre-procedure is executed.

The 15 bits of the FIF of the DIS signal are set to "1".
To

At S44, it is determined whether or not the 45 bits of the FIF of the DIS signal is "1".
If the 45 bits of the IF are "1", the process proceeds to step S46. If the 45 bits of the FIF of the DIS signal are not "1", the process proceeds to step S52.

In S46, the remaining pre-procedure is executed, and here, the 15 bits of the FIF of the DCS signal are set to "1",
4 bits are set to “0”.

In S48, an image signal of black and white binary information is transmitted at 8 pel / mm in the main scanning and at line / mm in the sub-scanning 7.7. In S50, the post-procedure is executed.

At S52, it is determined whether or not the 44 bits of the FIF of the DIS signal is "1".
If the 44 bits of the IF are "1", the process proceeds to step S54. If the 44 bits of the FIF of the DIS signal are not "1", the process proceeds to step S46.

At S54, the remaining pre-procedure is executed, and here, the FIF 15 and 44 bits of the DCS signal are set to "1".

In S56, an image signal of monochrome binary information is transmitted at 200 dpi in the main scanning and at 200 dpi in the sub-scanning.
At 58, the post-procedure is executed.

In S60, the NCU 2
Is turned on, and in S62, the pre-procedure is executed. Here, the FIF 15, 43, 45, 68, 6
9, 97 and X bits are set to “1”.

Here, 15 bits of the FIF of the DCS signal are set to “1”, and bits 43 and 97 are set to “0”.

At S64, the DCS signal FIF 68,
It is determined whether or not both 69 bits are “1”.
If both the 68 and 69 bits of the CS signal FIF are "1", the process proceeds to step S66. If both the 68 and 69 bits of the DCS signal FIF are not "1", the process proceeds to step S76.

At S66, it is determined whether or not the X bit of the FIF of the DCS signal is "1".
If the X bit of F is “1”, the process proceeds to step S68, and if the X bit of the FIF of the DCS signal is not “1”, the process proceeds to step S72.

At S68, the image signal of the color information is received / recorded at 200 dpi in the main scanning and at 200 dpi in the sub-scanning, the post-procedure is executed in S70, and the main scanning is 8 pel / mm and the sub-scanning is 7 in S72. An image signal of color information is received / recorded at .7 line / mm, and in S74, a post-procedure is executed.

In S76, it is determined whether or not the 44 bits of the FIF of the DCS signal is "0".
If the 44 bits of the IF are “0”, the process proceeds to step S78. If the 44 bits of the FIF of the DCS signal are not “0”, the process proceeds to step S82.

In S78, an image signal of black-and-white information is received / recorded at 8 pel / mm in the main scanning and 7.7 line / mm in the sub-scanning. In S80, the post-procedure is executed.
An image signal of black and white information is received / recorded at 200 dpi in the main scanning and at 200 dpi in the sub-scanning. In S84, the post-procedure is executed.

According to the above-described embodiment, in a facsimile apparatus capable of performing color facsimile communication, means for notifying a transmitter of whether a resolution based on a millimeter system or a resolution based on an inch system is preferable as a resolution for receiving monochrome binary information is provided. Means for notifying a transmitter whether a resolution based on a millimeter system or a basis based on an inch is preferable as a resolution when receiving color information. On the other hand, when receiving black and white binary information, the receiver can notify the transmitter that an image signal with a millimeter-based resolution is preferable. Signals can be received, and therefore high quality reception / printing is possible.

According to the above embodiment, further, means for notifying to the receiver whether the resolution at the time of transmitting the black and white binary information is based on the millimeter system or the inch system, Means for notifying the receiver whether the resolution is based on the millimeter system or the inch system, so that the transmission of the color information and the transmission of the black and white binary information are independent, and the resolution of the image signal is It is possible to notify whether the system is based on the millimeter system or the inch system, which is easy for the receiver to understand.

The above embodiment may be applied to another image communication device such as a personal computer having an image communication function.

[0056]

According to the present invention, when receiving color information, an image signal having an inch-based resolution is preferable, while when receiving monochrome binary information, an image signal having a millimeter-based resolution is preferable. This can be notified from the receiver to the transmitter, and the image signal can be received at an appropriate resolution in color and black and white binary, so that high quality reception / printing is possible. Play.

[Brief description of the drawings]

FIG. 1 shows a facsimile apparatus FS according to an embodiment of the present invention.
FIG. 2 is a block diagram showing 1.

FIG. 2 shows the DIS / DTC signal and DC in the embodiment.
FIG. 4 is a diagram illustrating a specific example of an S signal and a FIF.

FIG. 3 is a flowchart showing a control operation in the embodiment.

FIG. 4 is a flowchart showing a control operation in the embodiment.

FIG. 5 is a flowchart showing a control operation in the embodiment.

FIG. 6 is a flowchart showing a control operation in the embodiment.

FIG. 7 is a flowchart showing a control operation in the embodiment.

FIG. 8 is a flowchart showing a control operation in the embodiment.

[Explanation of symbols]

 FS1: facsimile machine, 16: recording circuit, 18: memory circuit, 20: operation unit, 22: CPU, 24: ROM.

Claims (3)

[Claims] 1. An image communication apparatus capable of color facsimile communication, which notifies a transmitter as to whether a resolution based on a millimeter-based or an inch-based is preferable as a resolution when receiving monochrome binary information. (1) notifying means; and second notifying means for notifying the transmitter whether the resolution when color information is received is preferably a millimeter-based or an inch-based. Image communication device. 2. The third notifying means according to claim 1, wherein the receiver is notified of whether the resolution in transmitting monochrome binary information is based on a millimeter system or an inch system. And fourth notification means for notifying the receiver whether the resolution in transmitting the color information is based on the millimeter system or based on the inch system. Image communication device. 3. The image communication device according to claim 1, wherein the image communication device is a facsimile device.