JPH0563998A - Color facsimile equipment - Google Patents

Abstract

PURPOSE:To perform the communication to be matched to the communication cost and the intention of a communicating opponent. CONSTITUTION:A CEU(color information encoding unit) 8 color-encodes the transmitting image. An SU (blackening and whitening unit) 5 and an MTU 7 black and white-encodes from the same transmitting original. An MPU 1, when the transmitting image corresponds to the black and white original, compares respective capacities of the color encoding data and the black and white encoding data obtained from the CEU 8 and an MTU 6 and transmits the smaller encoding data. On the other hand, when the transmitting image corresponds to the color original, the above-mentioned color encoding data and the black and white encoding data are stored in an RAM 3 and transmits the encoding data in accordance with the terminal characteristic of a transmitting destination out of two kinds of the stored encoding data through a CCU 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color facsimile apparatus, and more particularly to a color facsimile apparatus having a color image or black and white image encoding function.

[0002]

2. Description of the Related Art Conventionally, a device for transmitting a color image has been responsible for only the color image or converting an input image according to a communication partner and transmitting the converted image.

[0003]

However, in the above conventional example, CCITT (International Telegraph and Telephone Advisory Committee) is used.
Recommendation group 4 equipment class 1 equipment (hereinafter G4
I could not communicate with Fax). Further, depending on the image data, the communication time is long and the communication cost is not low. In addition, the document sent by the operator is arbitrarily converted into an image by the device, and the receiver side communicates as an image that is difficult to see, which is not necessarily the sender's intention.

The present invention has been made in view of the above-described conventional example, and an object of the present invention is to provide a facsimile apparatus that enables communication that matches the communication cost and the intention of the communication partner. ..

[0005]

[Means for Solving the Problems]
In order to achieve the object, a facsimile apparatus according to the present invention is a facsimile apparatus having a function of accumulating a transmission image, and a color encoding means for color-encoding a transmission image, and a black-and-white encoding for black-and-white encoding the transmission original. And the transmission image corresponds to a black-and-white original, the coded data of the smaller capacity of the two types of coded data obtained from the color coding means and the black-and-white coding means is transmitted. And a first transmitting unit.

[0006]

According to this structure, the color encoding means color-codes the transmission image, the black-and-white encoding means black-and-white encodes the transmission original, and the first transmission means, when the transmission image corresponds to the black-and-white original, Of the two types of coded data respectively obtained from the color coding means and the black and white coding means, the coded data having the smaller capacity is transmitted.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of a facsimile apparatus which is an embodiment of the present invention. In the figure, 1 is a micro processing unit (hereinafter referred to as MPU), 2 is a read only memory (hereinafter referred to as ROM), 3 is random access memory (hereinafter referred to as RAM), 4 is a communication control unit (hereinafter referred to as CCU). 5) an image input device (hereinafter referred to as SU), 6 a black and white device (hereinafter referred to as MTU), 7 a black and white information coding device (hereinafter referred to as CMM).
RU), 8 is a color information encoding device (hereinafter CEU)
, 9 is a hard disk write buffer (hereinafter WH
10 is a hard disk control unit (hereinafter referred to as HDCU), 11 is a hard disk read buffer (hereinafter referred to as RHBUF), 12 is a color information decoding device (hereinafter referred to as CDU), and 13 is a black and white information decoding device. (Hereinafter referred to as DMMRU), 14 is a printer buffer (hereinafter referred to as PBUF), and 15 is an image output device (hereinafter referred to as PMU).
U) and 16 are composed of a console device (hereinafter referred to as OU).

The ROM 2 stores a program or the like according to the flow charts of FIGS. 5 and 8 as a program for operating the MPU 1. The RAM 3 has a region used as a work area for various programs, an image file management table and an image file page management table shown in FIGS.

FIG. 2 is a top view showing the structure of the OU in FIG. 1 in detail.

FIG. 3 is a diagram showing the structure of an image file management table according to this embodiment, and FIG. 4 is a diagram showing the structure of an image file page management table according to this embodiment.

Field 1 (shown as F1 in FIG. 3) is
The field 2 stores the name of the image file, and the field 2 (shown by F2 in FIG. 3) stores the pointer to the page management table in FIG. Record 1 (indicated by R1 in FIG. 4) stores, for example, the encoding information of the first page that is a pointer of the file name “TXDoc030357” illustrated in FIG. Shown) to the final record (Fig. 4
Up to (indicated by Rn), the coding information which is the pointer of each page is stored. These pieces of encoded information are stored in the shaded area of F2.

In this way, by providing the image file management table and the page management table, it is possible to manage the image files page by page.

FIG. 5 is a flow chart for explaining storage control of encoded data in this embodiment.

In step 1 (S1), when a document input request from the OU 16 is generated via the MPU 1, the SU 5 is activated. When SU5 is activated, monochrome image data or color image data is sent to MTU6 and CEU8.
In the case of color image data, the MTU 6 converts the data into black and white image data and sends it to the CMMRU 7. CMM
The RU 7 encodes black and white image data into black and white (for example, CCIT
Recommendation T. 6 according to MMR coding), and WHBUF9
Store in. The CEU 8 color-codes the monochrome image data or the color image data and stores it in the WHBUF 9.

In step 2 (S2), the capacity of the stored color coded data and the capacity of the stored black and white coded data are calculated. For such calculation, for example, only the code amount may be calculated by prescanning the document. Step 3
In (S3), the two data capacities calculated in S2 are compared, and if the capacity of the color coded data is smaller, the process proceeds to step 4 (S4). If the capacity of the black and white encoded data is smaller in S3, step 5 (S5)
Proceed to. In both cases of S4 and S5, the coded data is stored in the WHBUF 9 to the HDCU 10.

In step 6 (S6), if there are still originals to be input, the process is returned to S1, and the processes for the number of existing originals are repeated between S1 and S6. When there are no more originals to be input in S6, the process proceeds to step 7 (S7) to start the transmission operation.

FIG. 6 shows the communication protocol (hereinafter,
It is a figure which shows the specific operation example of (it calls a protocol). In the operation example of this protocol, CCITT recommendation “T.6” is given.
2) It is described as a telematics protocol based on the session protocol.

The operation control program of this protocol is stored in advance in the ROM 2 of FIG.

The protocol operating procedure will be described with reference to FIG. First, when the call setting below the transport is executed by the CCU 4, the calling side sends a session start command (hereinafter referred to as CSS) in P (protocol) 1, and in P2 from the called side for the CSS. As a response to the session
Call). Then, the calling side transmits a device function list command (hereinafter referred to as CDCL) at P3, and receives a device function list affirmative response (hereinafter referred to as RDCLP) at P4 as a response from the called side to CDCL. ..

Then, the calling side transmits a document start command (hereinafter referred to as CDS) at P5.
Then, in P6, the image data is transmitted from the calling side as a protocol higher than the session layer.

When the transmission of the image data of all pages is completed in this way, the process proceeds to P7, where a device end command (hereinafter referred to as CDE) is sent, and in response to the response from the called side, the device end acknowledgment response is sent in P8. (Hereinafter referred to as RDEP) is received. Then P9
Then, the calling side sends a session end command (hereinafter CSE).
Is sent, and P1 is sent as a response from the called party.
At 0, the session end acknowledgment (RSEP)
To receive. The protocol below the transport layer below the "T.62" session protocol as the session layer is executed by the CCU 4.

FIG. 7 shows a format example of a non-standard function (hereinafter referred to as NSC) used in command / response of "CSS" and "RSSP", and "CDCL" and "RDCL". That is, this format has an F (field) 11 for displaying a country code, an F12 for displaying a domestic code, an F13 for displaying a supplier code, an F14 for displaying a type code, and an F15 for displaying a model code.

FIG. 8 is a flow chart showing the image conversion algorithm of this embodiment. This control is previously stored in the ROM 2 as a control program and is executed by the MPU 1.

At step 10 (S10), the steps below the connection are connected in the same manner as in FIG. Step 11 (S1
In 1), "CDCL" having the characteristic of the image to be transmitted as a parameter is transmitted. In step 12 (S12), "RDCL" using the terminal characteristics of the communication partner as a parameter.
P "is received. In step 13 (S13), S
The characteristics of the partner terminal received in 12 are compared with the characteristics of the image to be transmitted in the own terminal.

If they do not match, step 14 (S1
In step 4), it is determined whether or not an operator has given an image conversion permission instruction in advance when inputting a document. if,
If no instruction is given in advance, the fact that there is no match is displayed on the display of FIG. 2, for example, at this point. This allows the operator to make a decision. When the operator wants to convert and transmit the image, the process proceeds to step 15 (S15) to execute the image conversion according to the characteristics of the partner terminal. Image conversion is performed by the CDU1 via the RHBUF11 in FIG.
2 or DMMRU 13 for raw image conversion on PBUF 14.

After that, the PBUF 14 functions in the same manner as the SU 5 in order to perform the same operation as when the raw image is input from the SUS.

In S13, if the characteristics of the partner terminal and the characteristics of the image to be transmitted are the same, step 16
The process proceeds to (S16), and "CDS" is transmitted. Step 1
7 (S17), the image data is transferred to the C
CU4 sends it out.

When there is no image data to be sent, the process proceeds to step 18 (S18) to send "CDE". At step 19 (S19), "RDEP" is received, and at step 20 (S20), the session and below are disconnected. In S14, when the image conversion is not performed, the process directly proceeds to S20, and the session and the following are cut off.

The image processing technique such as resolution that is usually used for transmission is omitted because it deviates from the gist of the present invention.

As described above, the color coding and the black-and-white coding are provided, and by operating at the same time,
Without limiting the communication partner to Color Huaximiri,
Further, there is an effect that the communication data amount is reduced between the color facsimiles and the communication cost is reduced.

Further, since the image conversion according to the characteristics of the terminal of the communication partner can be executed as intended by the operator, there is an effect of reducing stress on the operator in transmission and reception.

[0032]

[Other Embodiments] In the flow chart of FIG. 5, the embodiment in which the encoded data is stored in the HDCU 10 and then the transmission operation is described. The same applies to data transfer.

Various kinds of encoding can be applied as the encoding of this embodiment. For example, ADC for color coding
A method called the T method or a binary color compression method may be used. The present invention may be applied to a system including a plurality of devices or an apparatus including 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.

[0034]

As described above, according to the present invention,
Without limiting the communication partner to Color Huaximiri,
Further, there is an effect that the communication data amount is reduced between the color facsimiles and the communication cost is reduced.

[Brief description of drawings]

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

FIG. 2 is a top view showing the configuration of the OU in FIG. 1 in detail.

FIG. 3 is a diagram showing a configuration of an image file management table according to the present embodiment.

FIG. 4 is a diagram showing a configuration of a page management table of an image file according to the present embodiment.

FIG. 5 is a flow chart for explaining storage control of encoded data in the present embodiment.

FIG. 6 is a diagram showing a specific operation example of a protocol in the present embodiment.

FIG. 7 is a diagram showing an example of an NSC format.

FIG. 8 is a flow chart showing an image conversion algorithm of this embodiment.

[Explanation of symbols]

 1 MPU 2 ROM 3 RAM 4 CCU 5 SU 6 MTU 7 CMMRU 8 CEU 9 WHBUF 10 HDCU 11 RHBUF 12 CDU 13 DMMRU 14 PBUF 15 PU 16 OU

Claims (2)

[Claims] 1. A color facsimile apparatus having a function of accumulating a transmission image, wherein a color encoding means for color-encoding the transmission image, a black-and-white encoding means for encoding black-and-white from the transmission original, and the transmission image are When corresponding to a black-and-white original, the first transmission for transmitting the smaller encoded data by comparing the capacities of the two types of encoded data obtained from the color encoding means and the black-and-white encoding means, respectively. And a color facsimile apparatus. 2. When the transmitted image corresponds to a color original, an accumulating means for accumulating two kinds of encoded data respectively obtained from the color encoding means and the black and white encoding means, and the accumulated two kinds. 2. The color facsimile apparatus according to claim 1, further comprising: second transmitting means for transmitting one of the encoded data according to the terminal characteristic of the transmission destination.