JPH0662227A - Automatic scaling method and facsimile equipment - Google Patents

Abstract

PURPOSE:To prevent the memory overflow of a storage part for received origi nal storage and to shorten time from reception to recording by accelerating automatic scaling. CONSTITUTION:The number of total lines calculated by a line number integration part 103 is loaded on an NSS and sent out by a communication control part 106 of a transmission circuit system 100. The number of total lines is extracted from the NSS by a communication control part 202 of a reception circuit system 200 and based on this number of total lines, a scaling value decision part 210 decides a scaling value corresponding to a received original. Just after the original is received, the operations of decoding, linear density conversion and recording are started.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine, and more particularly, to auto scaling which is important in a facsimile machine using a cut sheet as a recording sheet.

[0002]

2. Description of the Related Art In a facsimile machine which uses cut sheets as recording sheets, the size of recording sheets is constant while the size of received documents is variable, so that an automatic scaling function is indispensable. FIG. 3 shows a simplified configuration of a receiving circuit system of a conventional facsimile apparatus equipped with such an auto scaling function.

In FIG. 3, a receiving circuit system is connected to a communication line via a modem 301, and performs facsimile reception under the control of a communication control unit 302. The encoded data of the received document output from the modem 306 is sequentially accumulated in the storage unit 303, and at this time, the line detection unit 304 outputs a detection signal for each line of the received document. This detection signal is counted by the line number integration unit 305.

When the reception of the encoded data of the received original of one page is completed, the total number of lines of the received original is obtained in the line number accumulating unit 305, which is the scaling value determining unit 30.
6 will be notified. The scaling value determination unit 306 determines an appropriate scaling value (linear density conversion rate) for the received document based on the notified total number of lines and the recording paper size notified from the recording unit 307 to determine the linear density conversion unit (scaler). Thirty
Set to 8.

After that, the process of outputting the received document and the process of receiving the document of the next page are started. The encoded data accumulated in the storage unit 303 is sequentially read by the decoding unit 309 and decoded into image information. This image information is sent to the linear density conversion unit 308, subjected to linear density conversion with a set scaling value, and then transferred to the recording unit 307 and recorded on recording paper. In parallel with this operation, the original of the next page is received, and its encoded data is accumulated in the storage unit 303.

[0006]

According to the above-described conventional configuration, the scaling value for the received original is determined, and the encoding-linear density conversion-recording operation is started by encoding the entire encoded data of one page of the received original. Since there is no choice but to wait until the data is accumulated in the storage unit 303, if the recording speed is slower than the communication speed, a memory overflow of the storage unit 303 is likely to occur. To prevent this memory overflow, the storage unit 3
It is necessary to give a considerable margin to the memory capacity of 03,
There is a problem that the time from the start of reception to the completion of recording becomes long.

It is an object of the present invention to provide an auto scaling method for solving the above-mentioned problems, and a facsimile apparatus which realizes the auto scaling method.

[0008]

In order to solve the above-mentioned problems, the present invention notifies the receiving side facsimile device of the total number of lines of the document from the transmitting side facsimile device in the facsimile control procedure prior to the transmission of the document. However, the facsimile receiver side is configured to acquire the total number of lines of the document to be received in the facsimile control procedure, and based on this total number of lines, determine the scaling value for the document to be received thereafter. Is.

[0009]

According to the present invention, since the scaling value can be determined at the time of receiving an original at the facsimile receiver side by the above-mentioned configuration, the decoding, linear density conversion, and recording processing of the original can be performed immediately after receiving the original. You can start.

[0010]

1 is a block diagram of a transmission circuit system, and FIG. 1B is a block diagram of a reception circuit system according to an embodiment of the present invention. According to the present invention, it goes without saying that a facsimile machine (transmitter) having only the same transmitting circuit system or a facsimile machine (receiver) having only the same receiving circuit system can be realized.

In FIG. 1A, the transmitter circuit system 100
Is a reading unit 101 for reading a document, and a reading unit 101.
An encoding unit 102 that encodes more input image information,
A line number accumulating unit 103 that obtains the total number of lines of an original on one page by counting the number of lines encoded by the encoding unit 102, a storage unit 104 for accumulating the encoded data by the encoding unit 102, and a line. A modem 105 for modulating / demodulating signals, a communication control unit 106 for controlling communication for facsimile transmission via the modem 105,
It is composed of a control unit 107 that performs overall control of the transmission circuit system 100. The communication control unit 106 also controls the total number of lines notified by the line number accumulating unit 103 to be placed on the facsimile information field of the NSS and notified to the receiver side in the facsimile control procedure (pre-message procedure).

In FIG. 1B, the receiving circuit system 200
Is a modem 201 for modulating / demodulating a line signal, a communication control unit for performing communication control for facsimile reception via this modem 201 and acquiring the total number of lines of a received document on a facsimile control procedure (procedure before message). Two
02, a code error detection unit 203 that detects an error in the code data of the received document and notifies the communication control unit 202, and a line detection unit 2 that detects the line of the coded data of the received document.
04, a line number accumulating unit 205 for obtaining the total number of lines of the received document by counting the detection signals from the line detection unit 204, a storage unit 206 for temporarily storing the encoded data of the received document, This storage unit 206
A decoding unit 207 for decoding the encoded data in the inside, a linear density conversion unit 208 for performing linear density conversion (scaling) of the decoded image information, and a recording paper (cut paper) for the image information after the linear density conversion. Recording unit 209 and communication control unit 20
The total number of lines or the line number accumulating unit 20 notified from 2
Based on the total number of lines notified from 5 and the recording paper size of the recording unit 209 (notified by the recording unit 209),
A scaling value determination unit 210 that determines an appropriate scaling value (linear density conversion rate) for the received document to be printed and sets this in the linear density conversion unit 208, the receiving circuit system 200
The control unit 211 performs the overall control of.

Next, in the case of performing facsimile communication between the facsimile devices configured as described above,
Transmitting side transmitting circuit system 100 and receiving side receiving circuit system 200
The operation of will be described. 2A is a flow chart showing an outline of the operation of the transmission circuit system 100, and FIG. 2B is a flow chart showing an outline of the operation of the reception circuit system 200.

Transmitting circuit system 10 of the transmitting side facsimile apparatus
At 0, the reading unit 101 and the encoding unit 102 read the transmission original and encode the original image information, store the encoded data in the storage unit 104, and at the same time, the line number integrating unit 103 counts the number of lines. Perform (ST1-ST
5). When the reading of one page of the transmission document is completed, the line number integration unit 103 obtains the total number of lines of the transmission document, and the communication control unit 106 is notified of this. The communication control unit 106 sets the notified total number of lines in the facsimile information field of the NSS, which is a control signal of the message pre-procedure of the facsimile control procedure, and sets the notified total number of lines, if it is not transmitting at that time, the transmission accumulated in the storage unit 104. Transmission of the manuscript by a non-standard procedure is started (ST8 to ST10). Then, when the transmission original remains in the reading unit 101, ST1 is set.
The process returns from 1 to ST1 to start the reading process of the transmission original on the next page.

It should be noted that the transmission original reading process (ST1 to S
In the middle of T5), when the storage unit 104 is full (ST4, YES), it is being transmitted (ST6, Y).
(ES) The reading of the transmission original is interrupted and the storage unit 104 waits for an empty space.

However, when not transmitting (ST6, N
O), since the total number of lines of the document being read is not fixed, the communication control unit 106 is notified of the number of substitute pseudo lines (ST7), and the communication control unit 106 sets the number of pseudo lines in the NSS facsimile information field. Set to and start transmission. At the same time, the reading of the transmission document being read is resumed.

In the receiving circuit system 200 of the receiving side facsimile apparatus which has received the call, when the communication control section 202 determines that the pre-message procedure is a non-standard procedure (ST21,
YES), it is checked whether or not the total number of lines of the received document is set in the facsimile information field of the received NSS (ST22). When the total number of lines is set, the scaling value determination unit 210 is notified of the total number of lines, and the scaling value is determined based on the total number of lines and the recording paper size (ST23). That is, automatic scaling is performed. Next, the procedure shifts to the in-facsimile procedure to start the reception of the original document, and the decoding unit 20
7. The linear density conversion unit 208 and the recording unit 209 start a series of processes for decoding the received document, converting the linear density, and recording (ST24).

When such automatic scaling is performed, the coded data of the received original is sequentially stored in the storage unit 206, and at the same time, the coded data in the storage unit 206 is sequentially output to the decoding unit 207. . Therefore, the memory overflow of the storage unit 206 is less likely to occur, and the time from reception to recording is significantly shortened.

In the message pre-procedure, when it is judged to be a standard procedure (ST21, NO), or when it is a non-standard procedure but the total number of lines is not set in the NSS (ST22, NO), the conventional method is used. The operation is similar to (ST25 and below). That is, the encoded data of the entire page of the received document is temporarily stored in the storage unit 206.
The total number of lines of the received document is notified from the line number accumulating unit 205 to the scaling value determining unit 210, and the scaling value is determined based on this total number of lines. After this, the storage unit 2
A series of operations of decoding encoded data in 06, linear density conversion, and recording starts.

[0020]

As is apparent from the above description, the present invention determines the optimum scaling value prior to the reception of a document on the receiving side, and immediately after the document is received, its decoding and linear density conversion are performed. Since a series of recording operations can be started, a memory overflow in the storage unit for buffering encoded data of a received document is unlikely to occur, and the time from reception to recording is significantly shortened. It has an effect.

[Brief description of drawings]

FIG. 1A is a block diagram of a transmission circuit system of a facsimile apparatus according to an embodiment of the present invention. FIG. 1B is a block diagram of a reception circuit system of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2A is an operation flowchart of a transmitter circuit system, and FIG. 2B is an operation flowchart of a receiver circuit system.

FIG. 3 is a block diagram of a receiving circuit system of a conventional facsimile device.

[Explanation of symbols]

 100 transmitter circuit system 101 reading unit 102 encoding unit 103 line number integrating unit 104 storage unit 105 modem 106 communication control unit 200 receiving circuit system 201 modem 202 communication control unit 206 storage unit 207 decoding unit 208 linear density conversion unit 209 recording unit 210 Scaling value determination unit

Claims (4)

[Claims] 1. The total number of lines of a document is notified to the receiving side facsimile device from the transmitting side facsimile device prior to the transmission of the document on the facsimile control procedure, and the receiving side facsimile device receives the total line of the receiving document on the facsimile control procedure. An automatic scaling method, characterized in that the number of lines is acquired and a scaling value for linear density conversion for a received document is determined based on the total number of lines. 2. A means for obtaining the total number of lines of a transmission document,
Control communication for facsimile transmission,
A facsimile apparatus having a means for transmitting to the line the total number of lines obtained by the means for a transmission original in a facsimile control procedure. 3. A means for performing communication control for facsimile reception, and a means for acquiring the total number of lines of a document in a facsimile control procedure, and a means for determining a scaling value based on the total number of lines acquired by this means. A facsimile apparatus having means for performing linear density conversion of a received document according to the scaling value determined by this means. 4. A means for obtaining the total number of lines of a transmission document,
Control communication for facsimile transmission,
A means for sending the total number of lines obtained by the above-mentioned means to the line in the facsimile control procedure and a communication control for facsimile reception are performed, and the total number of lines of the received original is acquired in the facsimile control procedure. A facsimile apparatus having means, means for determining a scaling value based on the total number of lines acquired by this means, and means for performing linear density conversion of a received document according to the scaling value determined by this means.