JP2599537B2 - Automatic scaling method and facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In a facsimile apparatus using cut paper as recording paper, an automatic scaling function is indispensable because the size of a received document is variable while the size of recording paper is constant. 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 stored in the storage unit 303. At this time, a detection signal is transmitted from the line detection unit 304 for each line of the received document. This detection signal is counted by the line number accumulation unit 305.

When the reception of the encoded data of one page of the received document is completed, the total number of lines of the received document is obtained by the line number accumulating unit 305, and this is calculated by the scaling value determining unit 30.
6 is notified. A scaling value determination unit 306 determines a scaling value (linear density conversion rate) appropriate for the received original document based on the notified total number of lines and the recording paper size notified from the recording unit 307, and performs a linear density conversion unit (scaler). 30
Set to 8.

[0005] Thereafter, a process of outputting a received document and a process of receiving the next document are started. The encoded data stored in the storage unit 303 is sequentially read out to the decoding unit 309 and decoded into image information. This image information is sent to the line density conversion unit 308, and after being subjected to the line density conversion with the set scaling value, is 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 the encoded data is stored in the storage unit 303.

[0006]

According to the above-described conventional configuration, the determination of the scaling value for the received document and the start of the encoding-linear density conversion-recording operation are performed by using the encoded data of the entire page of the received document. If the recording speed is slower than the communication speed, a memory overflow of the storage unit 303 easily occurs. To prevent this memory overflow, the storage unit 3
It is necessary to give a considerable margin to the memory capacity of 03,
There has been a problem that the time from the start of reception to the completion of recording becomes long.

An object of the present invention is to provide an auto-scaling method for solving the above-mentioned problems and a facsimile apparatus for realizing the method.

[0008]

In order to achieve this object, the present invention provides a method for transmitting a document once transmitted by a facsimile apparatus on the transmitting side.
And then calculate the total number of lines of the document or send it
When the original cannot be stored, the pseudo total number of lines is calculated.
Before sending the original in the facsimile control procedure,
The total number of lines in the article, or a pseudo
The number of lines is notified to the receiving facsimile machine,
In the facsimile machine, the facsimile
Obtain the total number of lines of the message, and based on this total number of lines
Determine the scaling value of the linear density conversion for the received document
It has a configuration of

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention depending on the configuration described above, can determine the scaling value at the time of receiving a document by facsimile receiver side, the transmission document on the transmitter side does not fit in memory
The total number of lines is determined in a simulated
Because you have to deliver to, immediately after it receives the document, it is possible to start decoding of the document, line density conversion, the process of recording.

[0010]

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

Referring to FIG. 1A, a transmission circuit 100
A reading unit 101 for reading a document;
A coding unit 102 for coding image information to be input from the
A line number accumulating unit 103 for calculating the total number of lines of a one-page document by counting the number of lines encoded by the encoding unit 102; a storage unit 104 for storing encoded data by the encoding unit 102; A modem 105 for signal modulation / demodulation, a communication control unit 106 for performing communication control for facsimile transmission via the modem 105,
It comprises a control unit 107 for performing overall control of the transmission circuit system 100. In the facsimile control procedure (pre-message procedure), the communication control unit 106 also carries out control for notifying the receiver of the total number of lines notified from the line number accumulation unit 103 in the facsimile information field of the NSS.

In FIG. 1B, a receiving circuit system 200
Is a modem 201 for modulating and demodulating a line signal, and a communication control unit that controls communication for facsimile reception via the modem 201 and obtains the total number of lines of a received document in a facsimile control procedure (pre-message procedure). 2
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 of the error, a line detection unit 2 that detects a line of the coded data of the received document
04, a line number accumulator 205 for calculating the total number of lines of the received document by counting the detection signals from the line detector 204, a storage unit 206 for temporarily storing encoded data of the received document, This storage unit 206
A decoding unit 207 for decoding the encoded data in the unit, a linear density conversion unit 208 for performing a 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 section 209 for recording in the communication control section 20
The total number of lines or the number of lines integrating unit 20 notified from 2
5 based on the total number of lines notified by the recording unit 209 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 original document to be recorded and sets the scaling value in the linear density conversion unit 208;
And a control unit 211 for performing overall control of.

Next, a case where facsimile communication is performed between the facsimile apparatuses configured as described above will be described.
Transmission circuit system 100 on the transmission side and reception circuit system 200 on the reception side
Will be described. FIG. 2A is a flowchart illustrating an outline of operation of the transmission circuit system 100, and FIG. 2B is a flowchart illustrating an outline of operation of the reception circuit system 200.

The transmitting circuit system 10 of the transmitting facsimile machine
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 simultaneously count the number of lines by the line number integration unit 103. Perform (ST1 to ST
5). When the reading of one page of the transmission document is completed, the total number of lines of the transmission document is obtained in the line number accumulation unit 103, and this is notified to the communication control unit 106. 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 pre-message procedure of the facsimile control procedure. The transmission of the document according to the non-standard procedure is started (ST8 to ST10). If the transmission original remains in the reading unit 101, ST1
The process returns from step 1 to step ST1 to start reading the next page of the transmitted document.

The transmission original is read (ST1 to S1).
In the middle of T5), when the storage unit 104 is full (ST4, YES), if it is transmitting (ST6, Y).
ES) The reading of the transmission document is interrupted, and the process waits until a space is created in the storage unit 104.

However, when transmission is not in progress (ST6, N
O) Since the total number of lines of the original being read is not determined, the substitute number of pseudo lines is notified to the communication control unit 106 (ST7), and the communication control unit 106 sets this pseudo line number in the facsimile information field of the NSS. To start transmission. At the same time, the reading of the transmission original being read is restarted.

In the receiving circuit system 200 of the receiving facsimile apparatus, when the communication control unit 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). If the total number of lines is set, the total number of lines is notified to the scaling value determination unit 210, and the scaling value is determined based on the total number of lines and the recording paper size (ST23). That is, auto scaling is performed. Next, the procedure shifts to the facsimile middle procedure to start receiving the original, and the
7. A series of processing of decoding, linear density conversion, and recording of the received document is started by the linear density conversion unit 208 and the recording unit 209 (ST24).

When such auto-scaling is performed, the encoded data of the received document is sequentially stored in the storage unit 206, but the encoded data in the storage unit 206 is sequentially output to the decoding unit 207 at the same time. . Therefore, memory overflow of the storage unit 206 is unlikely to occur, and the time from reception to recording is greatly reduced.

If it is determined in the message pre-procedure that this is a standard procedure (ST21, NO), or if it is a non-standard procedure but the total number of lines is not set in the NSS (ST22, NO), (ST25 and subsequent steps). 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 integration unit 205 to the scaling value determination unit 210, and the scaling value is determined based on the total number of lines. After this, the storage unit 2
A series of operations of decoding, linear density conversion, and recording of the encoded data in 06 starts.

[0020]

According to the present invention, as apparent from the above description, the optimum scaling value is determined on the receiving side prior to the reception of the original, and the transmitted original enters the memory on the transmitter side.
If not, determine the total number of lines
Since the data is sent to the receiver, a series of operations such as decoding, linear density conversion, and recording can be started immediately after the document is received, to buffer the encoded data of the received document. Has an effect that the memory overflow of the storage section hardly occurs and the time from reception to recording is greatly reduced. further,
Transmission starts even when there is no free storage in the transmitter
Communication efficiency can be improved.

[Brief description of the drawings]

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

FIG. 2A is an operation flowchart of a transmission circuit system, and FIG. 2B is an operation flowchart of a reception circuit system.

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 transmission circuit system 101 reading unit 102 encoding unit 103 line number accumulating unit 104 storage unit 105 modem 106 communication control unit 200 reception circuit system 201 modem 202 communication control unit 206 storage unit 207 decoding unit 208 line density conversion unit 209 recording unit 210 Scaling value determination unit

Claims (3)

(57) [Claims] 1. A document to be transmitted once by a transmission- side facsimile machine
Is stored, and the total number of lines of the original is calculated.
If you can not memorize the manuscript, find the pseudo total number of lines,
In the facsimile control procedure, before transmitting the original, the total number of lines of the original or a pseudo line equivalent to the total number of lines
To the receiving facsimile machine, the receiving facsimile machine obtains the total number of lines of the received document in the facsimile control procedure, and determines the scaling value of the linear density conversion for the received document based on the total number of lines. An auto-scaling method characterized in that: 2. A storage means for temporarily storing an original to be transmitted.
The total number of lines of the transmission original stored in the storage means of
Also, when the storage unit is full and all the transmitted originals can be stored.
Acquisition means for acquiring the number of pseudo lines when there is no
Facsimile control procedure for the total number of lines acquired by the acquisition means
A facsimile apparatus having transmission means for transmitting the data to a line . 3. A storage means for temporarily storing a transmission original,
Of the total number of lines of the transmission original stored in the storage means
And the storage means is full and not all of the transmitted originals
Line number acquisition means for generating the number of pseudo lines
If, performs a communication control for facsimile transmission, the transmission document on the facsimile control procedure wherein La
Sending means for sending the total number of lines determined by the in-number obtaining means to the line, communication means for performing facsimile reception, and detecting means for detecting the total number of lines of a received document in a facsimile control procedure; facsimile apparatus having determining means for determining a scaling value based on the total number of lines detected by the detecting means, and a density conversion <br/> means for performing linear density conversion of a received document according to the determined scaling value in this determination means .