JPS62272752A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent a communication error from being generated by sending a series of signals comprising compression information of white picture elements for one line, a fill signal and a line end code repetitively after picture information of the last line of a page is sent and sending a control return signal RTC there after. CONSTITUTION:A line memory control section 6 receiving a line memory clear signal from a CPU 1 brings the whole of one line to white level picture information. Then the signal brought to white level picture information is subjected to compression coding by a coding section 8, a fill and a line end signal EOL are added to one line of white compression information to form a series of dummy signals. The dummy signal is sent to a communication line 10 repetitively until the CPU 1 is interrupted. In applying interruption to the CPU 1, a TRC signals outputted. After the sending of the RTC, a multi-page signal MPS is sent. Since a prescribed command is sent to the receiving-side equipment within the specified time, a trouble such as a communication error is not caused.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a facsimile machine that can arbitrarily adjust the time from sending image information of the last line of one page to sending a post message command. .

Conventional technology Conventionally, in facsimile machines, for example, CCITT 2
Image information was exchanged while exchanging control signals with the other party's device in accordance with a predetermined procedure, as in the recommendations for basic facsimiles. For example, after sending the image information of the last line of one page, a predetermined number of end-of-line codes (EOL) are sent.
When the sending of the control return signal (RTC) consisting of
Multi-page signal (MPS) after 75±20m5ec,
Message end signal (ROM), procedure end signal (EO
Image information was exchanged according to a predetermined procedure, such as sending a post message command such as P) to proceed with facsimile communication.

Problems to be Solved by the Invention By the way, in communication using such a facsimile device, a predetermined period of time (for example, CCI
According to TT's facsimile-related recommendations, it is common for a communication error to occur if a period of 6 seconds has elapsed. As a result,
When sending multiple originals, it is necessary to set the originals one by one each time the original is scanned.To 3-7 If you are using a stationary original facsimile machine or a manual facsimile machine, the scanning process will start each time. I have to give instructions carefully, but it can be time consuming to do this.
In such cases, a predetermined operation may not be completed within a specified time, resulting in a communication error. As a countermeasure for this, an automatic document feed mechanism equipped with a document sensor is installed in the document stationary facsimile machine, and the document sensor determines whether there is a next document or not, or by setting the number of documents to be sent in advance. Count the number of originals sent with a counter, determine whether there is another original, and send a predetermined signal without delay after image information is sent to prevent communication errors from occurring. It is possible that However, since Kotobuki has been involved, providing an additional device such as an automatic paper feeding mechanism has caused the problem that the device becomes complicated and expensive.

The present invention has been made in view of the above circumstances, and provides a facsimile device that can adjust the time from the end of sending one page of image information to the sending of a post message command with a simple configuration, and does not easily cause communication errors. The purpose is to

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention, after the image information of the last line of one page is transmitted, compressed information of one line of white pixels, a fill signal, a line termination signal, etc. It has means for repeatedly sending out a series of signals consisting of codes and then sending out an RTC.

Effect When the image information of the last line of one page is sent, compressed information of white pixels for one line is formed. Then, a series of signals is generated in which a fill signal and a line termination code are added to this white compressed information. After this series of signals is sent out a predetermined number of times, the RTC is sent out. Following this RTC, a post message command is sent.

Embodiment FIG. 1 is a block diagram showing a facsimile apparatus according to an embodiment of the present invention. This facsimile machine has a CPUI and a CPU 5 base that control each circuit of this machine.

A timer 2 starts counting in response to a start signal of 1, and when it counts up to a preset value, interrupts the CPU 1 to notify the count amplifier.
An operation panel 3 for operating this device, a scanner 4 for reading image information, a scanner drive section 5 for driving the scanner 4, and the image information read by the scanner 4 is temporarily stored under the control of a line memory control section 6. line memory 7
and an encoding section 8 that compresses the image information read out from the line memory 7 via the line memory control section 6, and is connected to the encoding section 8 and the communication line 10 to control transmission.

It also includes a communication section 9 that performs modulation and demodulation, network control, and the like. In this embodiment, the line memory control unit 6 and the code unit 8 generate compressed information for white pixels, and a series of signals (hereinafter referred to as , a dummy signal) is generated, and after repeatedly sending out this dummy signal, a control return signal (RTC) is generated.
).

The operation of the facsimile machine configured as described above is shown in the flowchart of FIG. 2 and in FIG. 3.

The explanation will be made with reference to the respective signal sequences shown in FIG.

In this embodiment, a stationary original type facsimile machine without an automatic paper feeding mechanism will be described as an example, but the present invention is not limited to this.

First, a document is placed on the document table, various settings are made on the operation panel 3, and then a transmission button is pressed to start communication. (ST100) This instruction to start communication is input to the CPU 1. The CPU 1 operates the scanner driving section 5 based on this instruction signal. By this operation, the scanner driving section 5 drives the scanner 4 to read the image information of the original.

The read image information is once taken into the line memory 7 line by line by the line memory control unit 6. Then, the image information is sent from the line memory 7 to the encoding section 8 as needed, and necessary encoding is performed. Thereafter, the encoded image information is sent to the communication line via the communication section 9.

In parallel with sending out a predetermined amount of image information, it is determined whether reading of one page of the original has been completed (5TIOI).
). If it is determined that it has finished (Y), the CPU
After resetting timer 2, timer 1 outputs a count start signal to start counting (5T102). After that, the CPUI outputs a line memory clear signal to the line memory control section 6, and the line memory control section 6, which received this line memory clear signal, writes "0" to the line memory 7, making one line all white. image information.

Then, the signal containing all white image information for one line is compressed and encoded by the encoding unit 8, and fill and EOL are added to this one line of white compressed information to form a series of signals (dummy signals). Ru. This dummy signal is sent to the communication line 10 via the communication unit 9 (S'll'103
).

This dummy signal is sent when the transmit button or stop button (which may also be used as the send button) on the operation panel 3 is pressed, or when the timer 2 counts up and an interrupt occurs to the CPU 1. This is repeated until the (The operation repeatedly feeds back to ST]01). That is, when the sending of the read image information is completed, the sending device (S) remains in the receiving device (R ) continues to send a series of signals (dummy signals) consisting of image information of one line all white, fill, and EOL one pronk at a time.

Here, fill is a variable of "0" added to make the total time of the data signal, fill signal, and EOL of each line exceed the minimum transmission time of one line confirmed by the transmission control procedure. It is a long signal string. Also, EOL indicates the end of data for each line, r00000000000
This is a 1J signal. Further, the time set in the timer 2 in advance should be set in sufficient consideration of the time required to replace the original.

While transmitting the dummy signal, if the transmit button on the channel 3 is pressed (“Y” in ST104), the CPU is interwired and the RTC signal is output as shown in Figure 3 (5T105). , this RTC indicates returning to the transmission control procedure for transmitting and receiving control signals again.R'h: After sending, MPS (Multi-page signal: Indicates that one page has ended and there is a document to be sent continuously. ) is sent (5T106) and the operation returns to step 5T100.

On the other hand, while the dummy signal is being sent, a timeout occurs in timer 2 without the transmission button being pressed (in ST107
``Y'), the CPU 1 is inter-wired.Then, as shown in Figure 4, the RTC is sent out (
5T108). Subsequently, the RTC sends an EOP (procedure end signal) indicating the end of one page and that there is no document to be continuously sent (5T109), and ends the transmission.

Also, by pressing the stop button (ST110) while transmitting the dummy signal, it is determined that there is no serial transmission, and after the RTC is transmitted, EOP is transmitted and the transmission is ended, similar to the timer timeout.

Furthermore, the maximum length of one block of dummy signals is, for example, CC
According to ITT Recommendation T4, the limit is 5 seconds, so set timer 2 to 5 seconds or more.

At times, several blocks of dummy signals are sent.

In this embodiment, a stationary document type facsimile machine without an automatic paper feeding mechanism is explained as an example, but the present invention is not limited to this.For example, By providing a transmission reservation button and making a transmission reservation using this transmission reservation button in advance when transmitting, the present invention can be implemented only when the transmission reservation is made, and if the transmission reservation is not made (single transmission reservation). transmission), the present invention is not implemented, and RTC, E is sent immediately after the end of one page communication.
Terminates sending communication with OP.

■ In this embodiment, it is determined whether the serial transmission is simple by turning on the serial transmission button (instead of 5TI (14) in FIG. 2, whether it is υ serial transmission or simple transmission is determined by opening and closing the document cover. In other words, 1
When the present invention is implemented after the page communication is completed and the document cover is opened before the timer times out (before Y I+ of ST 107 in FIG. 2), it is determined that a transmission has occurred, and the RTC1
] After sending MPS, start communication on the next page (5 in Figure 2)
T100).

(2) In a manual FAX machine without an automatic paper feeding mechanism, turning on the sensor that detects that a document has been set operates in the same way as turning on the transmission button in this embodiment. In other words, even if you do not press the transmission button, transmission is determined by inserting the next document before the timer times out.

Thus, the present invention is not limited to the above three examples, and various facsimile machines can be constructed using the present invention.

Furthermore, according to this embodiment, a series of signals consisting of compressed information of white pixels for one line, fill signal, and EOL is simply sent out repeatedly after the image information of the last line of one page is sent out. , the recording paper ejected by the receiving device is also
The number of lines is limited to a predetermined number, and waste is extremely reduced.

As described in detail, in the present invention, after transmitting the image information of the last line of one page, a series of signals consisting of a white compression signal, a fill signal, and an EOL for one line are repeatedly transmitted a predetermined number of times. After that, the RTC will be sent out.During this time, the specified command will be sent to the receiving device within the specified time, so there will be no queue in the original stationary type facsimile machine or manual document feed type facsimile machine. This eliminates problems such as communication errors that occur when communicating with other people.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing a facsimile machine according to an embodiment of the present invention, Fig. 2 is a flowchart showing an example of the operation of the facsimile machine, and Fig. 3 is a signal sequence when the send button is operated in the facsimile machine. , FIG. 4 shows a signal sequence when a timeout occurs in the same facsimile machine. ■...CPU, 2...Timer, 6...Line memory control section, 8... Encoding section. Name of agent Patent attorney Toshio Nakao and 1 box 1 Figure 2

Claims (1)

[Claims] Generate compressed information for white pixels, form a series of signals by adding a fill signal and a line termination code to the white compressed information for one line, send this series of signals repeatedly, and then send a control return signal. After sending the last image information for one page of the original to the line, the series of signals can be sent a predetermined number of times to adjust the time from the end of image signal transmission to the start of post message command transmission. A facsimile device characterized by: