JPS62216473A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent the deterioration in transmission speed due to an unnecessary fall back and a wasteful retransmission and improve the transmission efficiency by selecting and designating the suitability decision reference of the number of errors according to the denseness and less-denseness of the information of a transmission original. CONSTITUTION:An operator judges a degree capable of reading every page of the transmitting original 1 and selects and sets the suitability decision reference by a setting means 12, the suitability decision reference is mixed in a transmission telegraphic message and transmitted by a telegraphic message editing means 13. In a receiving side, the transmitted suitability decision reference is stored in a memory means 14, at the time of the completion of the page of the picture data of the transmitted original 1, the number of the errors is compared with the suitability decision reference stored in the memory means 14 in a decision means 15 to decide the suitability, the result is transmitted to a transmission side, thereby, the transmission is carried out according to the transmission speed corresponding to the suitability decision reference every page in accordance with the denseness and less-denseness of the information of the original 1. Thereby, the unnecessary and wasteful second transmission or the unnecessary deterioration in the transmission speed are eliminated, so that the efficient transmission can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] A setting means for controlling the transmission speed of a facsimile machine, and selecting and setting pass/fail judgment criteria on the transmitting side according to the density of information affected by the size of characters in a document, etc.

and a message editing unit that collects the transmitted messages including pass/fail criteria; a storage unit that stores the pass/fail criteria received from the transmitting side on the receiving side; and a judgment unit that compares the number of errors in received image data to determine pass/fail. By having a copy of the document, it is possible to transmit the information at an appropriate transmission speed depending on the density of the information in the document.

[Industrial application field]

The present invention relates to transmission speed control of a facsimile (hereinafter referred to as FAX) transmitting device, and particularly to a FAX transmitting device that can improve transmission efficiency by transmitting at a transmission speed that corresponds to the density of information on a document.

BACKGROUND OF THE INVENTION In recent years, FAX communication has become popular in which a document, figure, etc. is transmitted to a remote location using a communication line. FAX communication is a process in which sending and receiving devices between users are usually connected through a switchboard and a communication line such as a subscriber telephone line, and document communication is performed between the users. The document is then recorded on recording paper and reproduced.

In fax communication, errors occur in image data due to noise on the line, etc., but the receiving side determines whether or not the amount of error is acceptable based on one standard, and the sending side retransmits the data accordingly. The transmission speed is reduced.

However, since there are various font sizes in transmitted manuscripts, and the legibility of received records varies greatly, an efficient transmission method that can prevent wasteful retransmissions and unnecessary low-speed transmissions is desired.

[Conventional technology]

FIG. 4 shows a block diagram of the FAX system.

In the figure, a reading unit 2 has a function of reading a document 1 with an image sensor (not shown) and converting it into image data.

The main control section 3 performs sequential control of transmission and reception, and has the function of controlling each section to display and store the destination telephone number, etc. input from the operation display section 4.

A function to establish a pre-transmission procedure based on the destination phone number, a function to binary convert scanned image data, compress it and send it, a function to expand received image data etc. and detect errors,
and perform functions such as recording.

The operation display section 4 includes a send button and a receive button (not shown).

It is equipped with an operation button for inputting the destination telephone number, etc., and a display section for checking the communication status, displaying input data, etc.

The compression unit 6 has a function of compressing image data to be transmitted. The decompression unit 7 has a function of decompressing received image data and the like.

The error detection section 8 has a function of detecting the presence or absence of an error in each line of received image data, etc., and has a function of sending the result to the main control section 3.

The transmission control unit 9 has a function of controlling transmission and reception of image data. The modem 10 has a function 2 for modulating and demodulating image data, etc.
It has a communication training function and a function to control transmission speed. Network control unit
OL Unit (hereinafter referred to as NCU) 11 has a function of controlling connection and disconnection of the circuit switching network.

With such a configuration and function, the operator sets the original 1 to be sent in the device and displays the original 1 on the operation display section 4.
Set the reading line density and then enter the destination phone number. Then, the receiving station is called and transmits a called station identification signal, that is, a response signal such as the receiving party's telephone number.The transmitting station usually starts training at 9600 bps, and if there are many errors, it falls back and disconnects the line. The optimal communication speed is determined depending on the situation. For example, the speed is reduced to 7200 bps or 4800 bps for transmission.

When the reception is ready, the document 1 is read by the image sensor, converted to image data, sent to the main control unit 3, converted into binary values and compressed, and then the image data is sent page by page to the transmission control unit 9. Under the control, the signal is modulated by the modem IO and sent out to the line for reception (speech) via the NCUll.

At the receiving station (here, the function of the receiving station will be explained using the receiving function shown in Fig. 4), the received image data is decompressed, checked for errors by the error detection section 8, and sent to the recording section 5, where it is recorded on recording paper. be done.

Error checking is performed for each line, and if the standard value is exceeded even temporarily during reception, the sending side is notified that the sending speed is inappropriate. Therefore, in order to ensure reliable communication, the transmission speed is fallen back and the remaining document 1 is transmitted. Sometimes retransmitted. After the transmission speed is lowered, it will be transmitted at that speed until the end of document 1, no matter how many pages there are.

[Problems to be Solved by the Invention] According to the above conventional method, the receiving side determines that an error has occurred due to a line failure, notifies the sending side, and transmits at a reduced transmission speed. Even if it is difficult to decipher the received record due to the size of the data, it may be sent at a low speed or retransmitted, which may be wasteful, extending the line usage time and making it difficult to read the next transmission. This leads to data delays and increased line usage charges, leading to poor communication efficiency.

In other words, the document 1 has many different sizes, such as small printed characters and large handwritten characters, and even if there is a predetermined amount of errors or more, the readability of the received record will vary greatly. When the information is legible, there may be no need to reduce the transmission speed or retransmit it.

[Means for solving problems]

FIG. 1 shows a block diagram of the principle of the present invention.

In the figure, 12 is a setting means for selecting and setting pass/fail judgment criteria according to the density of information in the manuscript; 13 is a message editing means for editing a transmitted message including the pass/fail judgment criteria selected and set by the setting means 12; and 14 is a transmitter. 15 is a storage means for storing the pass/fail criteria received from the side; 15 is a storage means 14 for storing the number of errors in the received image data;
This is a determining means for determining pass/fail by comparing the pass/fail criteria stored in .

Therefore, the pass/fail judgment criteria selected and set by the setting means 12 are incorporated into the transmission message by the message editing means 13, sent to the receiving side, and stored in the storage means 13, and the number of errors in the transmitted image data and the pass/fail judgment criteria are determined. The means 15 compares and determines the results and sends a response to the transmitting side as to whether the results are acceptable or not.

[Effect]

When the operator judges the readability of each page of the transmitted document 1 and selects and sets the pass/fail criteria using the setting means 12, the pass/fail criteria are incorporated into the transmitted message by the message editing means 13 and transmitted. On the receiving side, the received pass/fail judgment criteria are stored in the storage means 14, and the judgment means 15 compares the number of errors with the pass/fail judgment criteria stored in the storage means 14 at the end of the page of the image data of the transmitted document 1. By determining the pass/fail by using the data transmission method, and transmitting the result to the sending side, it is possible to transmit at a transmission speed that corresponds to the pass/fail criteria for each page depending on the density of the information in the document 1, thereby eliminating the waste of unnecessary retransmissions. Since there is no need to reduce the transmission speed unnecessarily, efficient transmission can be performed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. The same reference numerals refer to the same objects throughout the design.

FIG. 2(a) shows a block diagram of the transmitting side device, and in the figure, the operation display section 4a has the same function as the operation display section 4 described in the conventional example, and also supports multiple pass/fail judgment criteria. The selection button 4b is comprised of a plurality of phases.

The setting unit 12a is a memory in which a plurality of pass/fail criteria N are set and stored. There are two examples of pass/fail criteria N, for example, high quality/
The number of allowable errors is set as pass/fail criteria N+ and Nz for two types of standard quality, respectively.

The message editing unit 13a has a function of editing a transmitted message including the selected pass/fail criterion N.

The main control section 3a has the transmitting side function of the main control section 3 described in the conventional example, and also has a function of controlling each of the above sections.

FIG. 2(b) shows a professional diagram of the receiving side apparatus, and in the figure, the pass/fail judgment criterion storage section 14a is a memory in which the pass/fail judgment criterion N for each received page is stored.

The comparison/determination unit 15a is a determination unit that compares the number of errors in the received image data detected by the error detection unit 8 with the pass/fail determination criterion N stored in the pass/fail determination criterion storage unit 14a to determine pass/fail. That is, when the number of errors n exceeds the pass/fail determination criterion N, the result is NG.

The main control section 3b has the receiving side function of the main control section 3 described in the conventional example, and also has a function of controlling each of the above sections.

With such a configuration and function, the operation will be explained with reference to the flowchart in FIG. The user presses the button 4b to select and instruct the pass/fail criterion N2, for example, standard quality, and calls the receiving side to start communication.

■Based on the pass/fail selection instruction, the corresponding pass/fail judgment criterion N2 is read out from the setting section 12a and sent to the message editing section 13a, the transmission message incorporating the pass/fail judgment criterion INK is edited and the NSS signal is sent. .

(2) The receiving side stores the pass/fail criterion N2 in the NSS in the pass/fail criterion storage section 14a.

■Next, a training check signal is sent from the transmitting side, and as a result of the training check, a reception ready signal (C
FR), the image data is sent; ■If NG, a signal (FTT) indicating that there are many errors due to the line condition, etc. is sent, and the process falls back to the flow of ■.

- On the receiving side, an error check is performed every time one line of image data is received, and if there is an error, it is counted.

(2) When the transmission of one page of image data is completed, the number n of errors in the image data is compared with the pass/fail criterion N2 read from the pass/fail criterion storage section 14a, and a pass/fail determination is made.

■When the judgment result is NG (n > NZ), an abnormal signal (
RTN) is sent to the sending side, and falls back to ■.

■When OK (n≦NZ), send the MCF signal.

[Phase] Thus, the end and continuation of the transmission are confirmed, and when the transmission is to be continued, Wt is continued by ``■'' or ``■''.

In this way, error determination can be made according to the density of information on the document 1, and transmission efficiency can be increased by preventing a reduction in transmission speed due to unnecessary fallbacks and wasteful retransmissions.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to select and instruct the pass/fail judgment criteria for the number of errors according to the density of information in the transmitted document, so unnecessary retransmissions and unnecessary reductions in transmission speed can be avoided. This has the effect of making it possible to perform efficient transmission.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is a block diagram showing an embodiment of the present invention, FIG. 3 is a flowchart of FIG. 2, and FIG. 4 is a block diagram illustrating a conventional method. In the figure, 1 is the original, 3, 3a, 3b are the main control units,
4.4a is an operation display section, 4b is a selection button, 8 is an error detection section, 10 is a modem, 12 is a setting means,
12a is a setting section, 13 is a message editing means, 13a is a message editing section, 14 is a storage means, 14a is a pass/fail judgment criterion storage section, 15 is a judgment means, and 15a is a comparison judgment section. tree. So: 2 = - Fuji Yuzuki L nia) Red ball 70 Chiya 1 Smell (αn Isu two people Iri 11 Ri 2 Mouth obedience example of Fudomari 72 1000 4 mouths)

Claims (1)

[Claims] A facsimile machine having a function of transmitting image data read from a document and controlling the transmission speed according to the number of transmission errors, the transmitting side having a pass/fail judgment according to the density of information on the document. A setting means (12) for selecting and setting standards, and a message editing means (13) for editing a transmitted message including the pass/fail judgment criteria selected and set by the setting means (12), and a receiving side receives information from a sending side. a storage means (14) for storing the pass/fail judgment criteria; and a storage means (14) for storing the number of errors in the received image data and the storage means (14).
A facsimile apparatus comprising: a determining means (15) for determining pass/fail by comparing pass/fail determination criteria stored in the facsimile apparatus, and for responding to a transmitting side with a result of the pass/fail determination of the determining means (15).