JPH0698148A - Image transmitting method - Google Patents

Abstract

PURPOSE:To effectively use a facsimile equipment by respectively transmitting image signals binarized and encoded by built-up methods corresponding to the kind of an image recorder at an opposite side receiver, corresponding to memory capacity and corresponding to communication velocity. CONSTITUTION:At a facsimile equipment 1, a CPU 2 controls the entire equipment through a bus 2a according to a program stored in a ROM or the like stored inside. When a transmitting operation is started, original image reading is started after negotiation with the opposite side receiver. Then, processing is performed corresponding to the designation of sequential built-up or progressive built-up from the receiver. On the other hand, processing method is changed corresponding to whether the memory capacity of the opposite side receiver is large or small. Further, when any built-up method is not designated from the opposite side receiver, the built-up method is selected corresponding to the communication velocity and when the velocity is low, binary encoding is performed by progressive built-up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image transmission method, for example, an image transmission method such as a facsimile device for binary-encoding image information and transmitting it.

[0002]

2. Description of the Related Art Conventionally, MH, MR and MMR systems have been standardized as encoding methods for facsimile machines. However, the same encoding method is not suitable for a new image communication mode such as an image database service because the original image is sequentially transmitted from top to bottom.

As a transmission method corresponding to a new image communication mode, a progressive built-up has been proposed in which a rough whole image is displayed at an early stage and then the image quality is gradually improved. By using this method, the user can grasp the content of the image at an early point, and when using the image database service or the like, improvement in search efficiency can be expected.

FIG. 9 is a diagram for explaining a general built-up method of binary coding. That is, the sequence
The built-up transmits n stripes obtained by dividing the original image shown in FIG. 7A in the order shown by 801 in FIG. 8B. First, the first stripe is transmitted at 400 dpi, and then the first stripe is transmitted. Two stripes are transmitted at 400dpi, and finally the nth stripe is transmitted at 400dpi.

On the other hand, the progressive built-up is
The n stripes are transmitted in the order shown by 802 in FIG. 2B, and the first to the nth stripes are 1
Transmit at 2.5dpi, then 25 from 1st to nth stripe
Transmission in dpi, and finally 400 from the 1st to nth stripe
Since the image is transmitted in dpi, a rough overall image is transmitted at an early stage, and then the image quality is gradually improved.

[0006]

However, the above conventional example has the following problems. In other words, in the conventional transmission method of facsimile equipment, when the image data is binary-encoded and transmitted, the criterion that the image data is progressive or sequential is not established, so that the progressive buildup method is not established. If the other receiver's printer is a line printer, the image cannot be output unless the reception of all image data is completed. There was a drawback that it could not be used for a long time.

Further, in the above conventional example, if the communication speed is slow (4,800 bps or less), the line holding time becomes long. Therefore, if transmission is performed by sequential buildup, the communication is interrupted due to line disconnection or the like. However, there is a drawback that it is highly likely that not all image data will be transmitted to the receiver of the other party.

[0008]

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and has the following structure as one means for solving the above problems. That is, in the image transmission method of the binary-coded image information, the determination process for determining the type of the image recording means of the partner receiver, and the built-up method according to the determination result of the determination process are used. And a transmission step of transmitting the value-encoded image information.

Alternatively, an image transmission method of binary-encoded image information, wherein a determination step for determining a reception memory capacity of a receiver of the other party and a built-up method according to the determination result of the determination step are used. And a transmission step of transmitting binary-encoded image information. Alternatively, in the image transmission method of the binary coded image information, the determination process for determining the communication speed with the other receiver, and the binary code by the built-up method according to the determination result of the determination process. And a transmission step of transmitting the converted image information.

[0010]

With the above arrangement, it is possible to provide an image transmission method for transmitting image information which is binary-coded by the built-up method according to the receiver of the other party.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A facsimile machine according to an embodiment of the present invention will be described below in detail with reference to the drawings.

[0012]

[First Embodiment] FIG. 1 is a block diagram showing a configuration example of the present embodiment. In the figure, 1 is a facsimile device of the present embodiment, 2 is a CPU, which controls the whole of the present embodiment via a CPU bus 2a according to a program stored in an internal ROM or the like.

An encoding unit 3 encodes image data. A decoding unit 4 decodes the encoded image data. A buffer 5 stores image data when various processes are performed. A memory 6 is used for accumulating image data and temporarily storing a destination number.

An I / O controller a 9 controls the keypad 7 and the display 8. The keypad 7 is used by an operator to set an operation mode and the like. The display 8 displays a message or the like for the operator or the like. An I / O controller 12 controls the image scanner 10 and the printer 11. The printer 11 is a page printer such as LBP.

A communication control unit CCU 13 controls communication with respect to the line 20. Next, the transmission procedure of this embodiment will be described. 2 and 3 are flow charts showing an example of the transmission procedure of this embodiment. In the figure, when the transmission operation is started, in the present embodiment, the set transmission method is determined in step S1, and in the case of a new transmission method which will be described later, it proceeds to step S2, in the case of memory transmission, it proceeds to step S5 In the case of direct transmission, the process proceeds to step S8. In addition,
The new transmission method described above is a method of transmitting image data while operating the scanner 10 and storing the image data in the memory 6 after the negotiation on communication is completed.

When the new transmission method is set, in this embodiment, after the negotiation with the receiver of the other party is performed in step S2, the image scanner 10 starts reading the original image in step S3, and the step is started. While the image data output from the image scanner 10 is stored in the memory 6 in S4, the process proceeds to step S11. If the memory transmission is set, in this embodiment, after the image scanner 10 starts reading the original image in step S5, the image data output from the image scanner 10 is stored in the memory 6 in step S6. , In step S7, negotiation with the receiver of the other party is performed, and the process proceeds to step S11.

If the direct transmission is set, in this embodiment, after the negotiation with the receiver of the other party is performed in step S8, the image scanner 10 is executed in step S9.
Then, the reading of the original image is started, the image data of one line output from the image scanner 10 is stored in the line buffer in step S10, and then the process proceeds to step S11.
The CPU 2 sets the line buffer in the memory 6, the buffer 5, and the like.

Subsequently, in this embodiment, in step S11,
The built-up method of binary coding is determined, and if the remote receiver specifies sequential buildup, go to step S19. If the remote receiver specifies progressive buildup, go to step S18. From the remote receiver. If no designation is made, the process proceeds to step S11.

If no designation is made, in this embodiment, in step S12, it is determined whether or not the receiver of the other party can support the binary code. If yes, the process proceeds to step S13. Advances to step S20, and at the same step, the image data stored in the memory 6 or the like is processed by the encoding unit 3 into a normal encoding method (MH, MR, MM).
R, etc.).

In the case where the receiver of the other party corresponds to the binary code, in the present embodiment, in step S13, when the built-up method corresponding to the binary encoding method of the receiver of the other party is judged, and only the progressive is supported, Step S18 described above
If it corresponds to only the sequential, go to the above-mentioned step S19, and if it corresponds to both, go to step S15.

In the present embodiment, in step S15, the printer type of the receiver of the other party is judged, and if it is a line printer, the process proceeds to the above-mentioned step S19.
In this embodiment, in step S16, the receiving memory capacity of the receiver of the other party is judged.
If the capacity is large, go to step S17.

In this embodiment, in step S17, the communication speed determined by the above-mentioned negotiation is judged. If the communication speed is high (for example, G3 is 9,600 bps or more), the process proceeds to step S19 described above, and the low speed ( For example, in the case of G3 of 4,800 bps or less), the process proceeds to step S18 described above. In this embodiment, the image data stored in the memory 6 or the like is encoded by the encoding unit 3 by the progressive buildup in step S18, and the memory 6 is encoded in step S19.
The image data stored in, for example, is encoded by the encoding unit 3 by the sequential buildup, and the process proceeds to step S21.

Subsequently, in this embodiment, in step S21,
The transmission of the image data encoded by the CCU 13 is started, and after the entire original image is transmitted, the transmission procedure is ended. As described above, according to the present embodiment, when the built-up method is not designated by the partner receiver, the built-up method is selected according to the printer type of the partner receiver and binary encoding is performed. Therefore, in the present embodiment, when the printer of the partner receiver is a line printer, since the binary encoding is performed by the sequential built-up, the partner receiver can output the received image while receiving the image data. As a result, the occupation time of the facsimile machine is shortened, and the facsimile machine can be used efficiently.

Further, according to this embodiment, when the built-up method is not designated by the receiver of the other party, the built-up method is selected according to the communication speed and binary coding is performed. Therefore, in the present embodiment, when the communication speed is low, binary coding is performed by progressive build-up, so that even if communication is interrupted due to a line disconnection, all image data is transmitted to the partner receiver. You can reduce the chances of not being.

[0025]

[Second Embodiment] A facsimile machine according to a second embodiment of the present invention will be described below. FIG. 4 is a block diagram showing a configuration example of this embodiment. In the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

In the figure, 14 is a hard disk HD.
Then, the image data etc. are accumulated. An HD controller 15 controls the HD 14. Next, the transmission procedure of this embodiment will be described. 5 and 6 are flow charts showing an example of the transmission procedure of the present embodiment. In the transmission procedure of the second embodiment shown in FIGS. 5 and 6, the same reference numerals are given to the transmission procedures substantially the same as those of the first embodiment shown in FIGS. 2 and 3, and detailed description thereof will be given. Omit it.

In the figure, when the transmission operation is started, in the present embodiment, the set transmission method is judged in step S1, and the step S2 is carried out in the case of the new transmission method described above, and the step is carried out in the case of the memory transmission. If it is direct transmission, the process proceeds to step S8. When the new transmission method is set, in this embodiment, after the negotiation with the receiver of the other party is performed in step S2, the image scanner 10 starts the reading of the original image in step S3, and the image is read in step S104. While accumulating the image data output from the scanner 10 in the HD 14, the process proceeds to step S11.

When the memory transmission is set, in this embodiment, the image scanner 10 starts reading the original image in step S5, and the image data output from the image scanner 10 is stored in the HD 14 in step S106. After that, the negotiation with the receiver of the other party is performed in step S7, and the process proceeds to step S11. If the direct transmission is set, in this embodiment, after the negotiation with the partner receiver is performed in step S8, the image scanner 10 starts reading the original image in step S9, and the image scanning is performed in step S10. After accumulating the image data of one line output from the printer 10 in the line buffer, the process proceeds to step S11. The CPU 2 sets the line buffer in the memory 6, the buffer 5, and the like.

Hereinafter, in the present embodiment, the image data is transmitted through a procedure substantially similar to that of the first embodiment, all the original images are transmitted, and then the transmission procedure is ended. As explained above,
According to the present embodiment, in addition to the effect similar to that of the first embodiment, since image data is stored in the HD having a large memory capacity, it is possible to transmit a larger number of original images as compared with the first embodiment. It is possible.

[0030]

[Third Embodiment] A facsimile machine according to a third embodiment of the present invention will be described below. The configuration of the third embodiment is the same as the first embodiment shown in FIG. 1 or the second embodiment shown in FIG.
Since the configuration is substantially the same as that of the embodiment, detailed description thereof will be omitted. FIG. 7 is a flow chart showing an example of the receiving procedure of this embodiment.

In the figure, this embodiment is based on step S2.
In 01, it is determined whether or not the binary code can be received, and if it is possible, the procedure proceeds to step S203, and if it is not possible, the procedure proceeds to step S202, and the binary code is received in the facsimile information by the same step. After setting disable, step S2
Jump to 09. The facsimile information is shown in Fig. 8.
The format is as shown in.

If a binary code can be received, this embodiment
In step S203, a receivable build-up method is determined, and if progressive build-up is receivable, go to step S204, and if sequence build-up is receivable, go to step S205.
At each step, after setting the receivable built-up method to the facsimile information, step S20
Jump to 9. In addition, in this embodiment, step S20
If it is possible to receive by either build-up method in step 3, the process proceeds to step S206.

If both built-up methods are receivable, the present embodiment sets that both can be used for facsimile information in step S206, and sets the available reception memory capacity for facsimile information in step S207. After the printer type is set in the facsimile information in step S208, the process proceeds to step S209. Subsequently, in this embodiment, after the facsimile information set is notified to the partner transmitter in step S209, the reception of the image data is started in step S210.

Subsequently, in the present embodiment, step S211 is performed.
Then, the process branches depending on the encoding method of the image data and proceeds to step S213 in the case of binary encoding, or proceeds to step S21 in the case of normal encoding (MH, MR, MMR, etc.).
In step 2, the received data is decoded by the decoding unit 4 in the same step, and then the process proceeds to step S216. In the case of binary encoding, the present embodiment branches in step S213 according to the built-up method, and in the case of progressive built-up, the processing proceeds to step S214, in which the decoding unit 4 decodes the image from the received data. If it is a sequential build-up, or if it is a sequential build-up, the process proceeds to step S215. In the same step, the decoding unit 4 sequentially decodes the image from the received data, and if the build-up ends, the process proceeds to step S216.

Subsequently, in this embodiment, step S216 is performed.
Then, the image decoded in step S212 or the image built up in step S214 or step S215 is output by the printer 11 or the like, and then the process ends. As described above, according to the present embodiment, it is possible to specify or notify the other transmitter of the encoding method or built-up method according to the configuration or state of the facsimile device, so that Image data can be received by an optimal encoding method or built-up method according to the configuration or state.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus.

[0037]

As described above, according to the present invention, there is provided an image transmitting method for transmitting image information which is binary-coded by a built-up method according to the type of image recording means of the receiver of the other party, and the receiver of the other receiver. An image transmission method for transmitting binary-encoded image information by a built-up method according to the reception memory capacity,
It is also possible to provide an image transmission method for transmitting image information that has been binary-coded by a built-up method according to the communication speed with the receiver of the other party.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of an embodiment according to the present invention.

FIG. 2 is a flow chart showing an example of a transmission procedure of the present embodiment.

FIG. 3 is a flow chart showing an example of a transmission procedure of this embodiment.

FIG. 4 is a block diagram showing a configuration example of a second embodiment according to the present invention.

FIG. 5 is a flow chart showing an example of a transmission procedure of the present embodiment.

FIG. 6 is a flow chart showing an example of a transmission procedure of this embodiment.

FIG. 7 is a flow chart showing an example of a receiving procedure of the third embodiment according to the present invention.

FIG. 8 is a diagram showing an example of format of facsimile information of the present embodiment.

[Fig. 9] Fig. 9 is a diagram for describing a general binary coding built-up method.

[Explanation of symbols]

 1 facsimile apparatus 2 of this embodiment 2 CPU 3 encoding unit 4 decoding unit 5 buffer 6 memory 7 keypad 8 display 9 I / O controller a 10 scanner 11 printer 12 I / O controller b 13 communication controller CCU 14 hard disk HD 15 HD controller

Claims (5)

[Claims] 1. A method of transmitting binary-encoded image information, comprising a determination step of determining the type of image recording means of a counterpart receiver, and a built-up method according to the determination result of the determination step. And a transmission step of transmitting the binary coded image information. 2. The transmission step, when the determination result of the determination step is a line printer, binary-codes the image information by a sequential built-up, and the determination result of the determination step is other than a page printer or a printer. The image transmission method according to claim 1, wherein the image information is binary-coded by progressive build-up. 3. An image transmission method of binary-coded image information, comprising a determination step of determining a reception memory capacity of a partner receiver, and a built-up method according to a determination result of the determination step. And a transmission step of transmitting binary-encoded image information. 4. An image transmission method of binary-encoded image information, comprising a determination step of determining a communication speed with a receiver of the other party, and a built-up method according to a determination result of the determination step. And a transmission step of transmitting binary-encoded image information. 5. The transmitting step transmits the binary-coded image information by a sequential build-up when the determination result of the determining step is a predetermined value or more, and the determining result of the determining step is 5. The image transmission method according to claim 4, wherein the binary-coded image information is transmitted by progressive build-up when the value is less than a predetermined value.