KR19990019405A - How to control printing speed of fax data - Google Patents

Abstract

While storing incoming fax data, check the remaining amount of memory and set the print mode to 'high speed print' when the memory is 'full' or when the remaining amount is less than the preset amount. Is released or if the remaining amount of memory exceeds the preset amount, the print mode is set to 'constant speed mode'.

Therefore, in a fax having a limited capacity of memory, all received fax data is printed, so that the loss of the fax data can be prevented.

Description

How to control printing speed of fax data

The present invention relates to a method for controlling the print speed of fax data, and more particularly, to control the print speed of fax data to prevent the loss of received fax data by varying the print speed according to the occupancy of the memory of the received fax data. It is about a method.

In recent years, as fax communication becomes general, much information is exchanged through facsimile. Especially for documents that need to be processed quickly, the exchange of information through facsimile is very effective, thereby greatly improving work efficiency.

As information exchange through facsimile is performed very frequently, memory is installed in the facsimile to improve the reception rate of the information or to exchange a large amount of information. This enables memory transmission / reception of specific documents.

That is, when the fax data is received in a situation where the facsimile is normally operated, the facsimile stores the received facsimile data in a page unit and converts the stored page unit fax data into a bit map image data. Print sequentially. At this time, the speed of receiving the fax data is faster than the speed of printing the stored fax data.

However, such a conventional facsimile causes the following problems.

(1) Since the reception speed of the fax data is faster than the printing speed, when receiving a large amount of fax data continuously, there is a situation where the fax data can no longer be received due to the limitation of the memory capacity. Accordingly, the facsimile generates a communication protocol error and terminates the current communication state. Therefore, the fax data to be received is lost.

(2) In order to be able to receive all the fax data, the capacity of the memory must be greatly expanded. However, since the price of the memory is high, the price of the product is increased, thereby increasing the economic burden on the user.

(3) After the print job of the fax data is continued while the memory is 'full' and the memory remaining amount is secured, it is necessary to resume communication and retransmit the fax data. I feel it.

Accordingly, the present invention has been made to solve such problems, and a first object of the present invention is to switch the print job to the high speed print mode when the remaining amount of the memory is less than a preset reference value, thereby facilitating fax data using a memory having the same capacity. In the case of receiving, it provides a method of controlling the printing speed of the fax data to prevent the loss of the received fax data.

In addition, a second object of the present invention is to control the printing speed of the fax data so that the fax data can be supplied to the user with low cost, high performance, and high reliability by using the memory of the same capacity without loss of the fax data. In providing.

1 is a schematic block diagram of a facsimile applied to the present invention;

2 is a flowchart showing a first embodiment of a method for controlling the printing speed of fax data according to the present invention;

3 is a flowchart showing a second embodiment of a printing speed control method for fax data according to the present invention;

4 is a flowchart illustrating a process of varying a printing speed according to a printing flag;

5 is a view showing a printing flag applied to the present invention.

* Explanation of symbols for main parts of the drawings

1: CPU 2: Memory

3: operation panel 4: scanner

5: Modem 6: Network Control Unit (NCU)

7: Printer 8: Sensor

A feature of the present invention for achieving the above object is, in the printing speed control method of a fax data including a printer having a printing mode of 'fast printing' and 'constant printing', and a memory storing the received fax data An encoding step of encoding fax data received from a remote site and converting the received fax data into coding data; An allocation step of requesting allocation of the memory; A storage step of storing the coded data in an allocated area of the memory; A checking step of checking whether the memory is 'full'; A first setting step of setting the print mode to the 'high speed printing' when the memory is 'full'; A second setting step of setting the print mode to the 'constant printing' if the memory is not 'full'; And a printing step of decoding the coded data stored in the memory, restoring the coded data, and then printing the coded data. And a printing speed control method of the fax data which repeats the checking step from the printing step until all the fax data is received.

Optionally, after performing the allocating step, if the memory is not allocated, the method may further include a blocking step of transmitting a protocol error message to the remote place and then blocking a call.

Preferably, in either of the first setting step and the second setting step, the print mode is set by a print flag sent from a device that manages allocation of the memory.

Preferably, the printing flag includes one of the bits indicating the remaining amount of memory among the total 8 bits of flag data and the other bit indicating that the 'high speed print' mode is set.

On the other hand, another feature of the present invention, a printer having a print mode of 'fast printing' and 'constant printing', and a method for controlling the printing speed of fax data comprising a memory storing received fax data: receiving from a remote site An encoding step of encoding the converted fax data into coding data; An allocation step of requesting allocation of the memory; A storage step of storing the coded data in an allocated area of the memory; A checking step of checking whether the remaining amount of the memory is less than a preset amount; A third setting step of setting the print mode to 'high speed printing' when the remaining amount of the memory is less than the set amount; A fourth setting step of setting the print mode to 'constant printing' when the remaining amount of the memory is equal to or larger than the set amount; And a printing step of decoding the coded data stored in the memory, restoring the coded data, and then printing the coded data. And a printing speed control method of the fax data which repeats the checking step from the printing step until all the fax data is received.

Optionally, after performing the allocating step, if the memory is not allocated, the method may further include a blocking step of blocking a call after transmitting a protocol error message to the remote place.

Optionally, further comprising: determining whether the memory is 'full' after performing the storing step; Preferably, in the determining step, the blocking step is performed if the memory is 'full', and if the memory is not 'pull', the checking step is performed.

Preferably, in any one of the third setting step and the fourth setting step, the print mode is set by a print flag transmitted from a device that manages the allocation of the memory.

Preferably, the printing flag includes one of the bits indicating the remaining amount of memory among the total 8 bits of flag data and the other bit indicating that the 'high speed print' mode is set.

Hereinafter, a preferred embodiment of the method for controlling the printing speed of fax data according to the present invention will be described in detail with reference to the accompanying drawings.

1 shows a schematic block diagram of a facsimile applied to the present invention.

The facsimile as shown in FIG. 1 includes a central processing unit 1 which generally controls the facsimile according to a set program, program data, protocol data, text data, work contents related to transmission and reception, and the like. And a memory (2) for accessing or storing data under the control of the central processing unit (1), and a plurality of keys to generate the key data of the facsimile. (OPE) operation panel (OPE) including a display device so that the display data of the central processing unit 1 can be displayed, and the original data is scanned and converted into digital image data. After the control of the scanner 4 and the central processing unit 1 provided to the central processing unit 1, the output data of the central processing unit 1 is modulated and output in analog form, and Modem (5) for demodulating and outputting the input signal of the type, and is operated under the control of the central processing unit (1), the call loop of the Public Switching Telephone Network (PSTN) (consisting of Ring and Tip) A network control unit (NCU) 6 for interfacing signals between the modem 5 and the general telephone network, and a printer for printing fax data received by a control signal from the central processing unit 1 ( 7) and a sensor unit 8 which detects the remaining amount of recording paper or detects a document and provides it to the central processing unit 1.

Each of these components is the same as the configuration of a general facsimile, so a detailed description thereof will be omitted, and only essential components applied to the present invention will be described.

<1st Example of this invention>

2 is a flowchart showing a first embodiment of the method for controlling the printing speed of fax data according to the present invention.

When fax data is received from the remote facsimile (S1), the central processing unit 1 encodes the fax data according to the data coding (T4 regulation) of the facsimile (S2). In addition, the central processing unit 1 calls the memory management unit to request an allocation of an available area for storing received fax data among the available areas of the memory 2 (S3), and the memory 2 allocates it. Check whether or not (S4). Here, if it is determined that the memory 2 is not allocated, this indicates that a space for storing the received fax data does not exist in the memory 2 and thus cannot receive and store the fax data. The protocol error message (Rx Error) is transmitted to the facsimile, and the modem 5 and the NCU 6 are controlled to block the call path (S5), and all the processes are finished.

If it is determined in step 4 (S4) that the memory 2 is allocated, the central processing unit 1 controls the memory management device to store the compressed fax data in the memory 2 (S6). Here, the central processing unit 1 checks whether the memory 2 is 'full' (S7), and if it is determined that the memory 2 is 'full', the central processing unit 1 prints the printer 7; Set the print mode to 'fast print' (S8). At this time, if the print mode is set to 'high speed print', since the print speed is faster than the reception speed of the fax data, if the 'high speed print' mode is continued, the free space is created in the memory 2.

If it is determined in step 7 (S7) that the memory 2 has not been 'pulled', the central processing unit 1 sets the print mode of the printer 7 to 'constant printing'.

Thereafter, the central processing unit 1 decodes the fax data compressed and stored in the memory 2 (S10), prints the decoded fax data (S11), and checks whether the fax data has been received ( S12), if the reception of the fax data is completed, all the processes are terminated. If the reception of the fax data is not completed, all the steps after the above step 7 (S7) are repeated.

Therefore, by switching the print mode to 'high speed printing' at the time when the memory 2 is 'full', all received fax data can be output.

<2nd Example of this invention>

3 is a flowchart showing a second embodiment of the method for controlling the printing speed of fax data according to the present invention.

When fax data is received from the remote facsimile (S13), the central processing unit 1 encodes the fax data according to the data coding regulation (T4 regulation) of the fax (S14). In addition, the central processing unit 1 calls the memory management unit to request an allocation of an available area for storing received fax data among the available areas of the memory 2 (S15), and the memory 2 allocates it. It is checked whether or not (S16).

Here, when the memory 2 is allocated, the central processing unit 1 controls the memory management unit to store the compressed fax data in the memory 2 (S17). Thereafter, the CPU 1 checks the remaining amount of the memory 2 through the memory management device (S18), and checks whether the memory 2 is 'Full' (S19).

If it is determined in step 16 (S16) that the memory 2 is not allocated or in step 19 (S19) the memory 2 is 'full', it is determined that the space for storing the received fax data is stored in the memory ( 2) the central processing unit 1 transmits a protocol error message (Rx Error) to the remote facsimile, because it does not exist within the network and indicates that the fax data cannot be received and stored. After controlling to block the call path (S20), all proceedings are terminated.

If it is determined in step 19 (S19) that the memory 2 has not been 'pulled', it is determined whether the current residual amount of the memory 2 is smaller than the preset amount (S21), and the current residual amount is greater than the preset amount. If it is determined to be small, the printer 7 is controlled to set the print mode to 'high speed printing' (S22).

If it is determined in step 21 (S21) that the current residual amount of the memory 2 is not smaller than the preset setting amount, the printer 7 is controlled to set the print mode to 'constant printing' (S23).

Thereafter, the central processing unit 1 decodes the print data compressed and stored in the memory 2 (S24), prints the decoded fax data (S25), checks whether the fax data has been received (S26), If the fax data has been received, all the processes are terminated. If the fax data is not received, all processes after step 18 (S18) are repeated.

Therefore, by switching the print mode to 'high speed printing' at the time when the remaining amount of the memory 2 becomes less than the preset amount, all the received fax data can be output.

On the other hand, Figure 4 is a flow chart showing a process of varying the printing speed in accordance with the printing flag.

The central processing unit 1 checks the bit (eighth bit) indicating the printing speed (high speed printing) among the printing flags shown in FIG. 5 (S27), and the print mode of the current printer 7 is 'high speed printing'. It is determined whether is set to (S28). If the print mode is not set to 'high speed printing' in this step 28 (S28), the CPU 1 checks the bit (7th bit) indicating the remaining memory amount in the printing flag shown in Fig. 5 and checks the memory. The remaining amount of (2) is detected (S29), and it is determined whether the remaining amount of the memory 2 is equal to or larger than a preset amount (S30).

If it is determined in step 28 (S28) that the print mode is set to 'high speed printing' or in step 30 (S30) it is determined that the remaining amount of the memory 2 is not more than the preset amount, the central processing unit ( 1) sets the print mode of the printer 7 to 'high speed printing' (S31).

If it is determined in step 30 (S30) above that the remaining amount of the memory 2 is equal to or larger than the set amount, the central processing unit 1 resets the printing flag (S32) to change the print mode of the printer 7 to 'constant speed'. Print '(S33). Thereafter, a print job is performed according to the set print mode (S34).

As a result, according to the printing speed control method of the fax data according to the present invention, the following advantages occur.

(1) When the memory is 'pulled' or when the remaining amount of memory is less than the preset amount, the print mode is switched to 'high speed printing' so that the received fax data can be received even when a large amount of fax data is continuously received. All of them can be printed, thus preventing the loss of fax data.

(2) By printing the received fax data by varying the printing speed without having to expand the capacity of the memory, it is possible to prevent a separate expense to expand the memory, thereby providing a low-cost, high-performance fax machine have.

(3) When the memory is 'full' or when the remaining amount of memory is less than the set amount, the print mode is switched to 'high speed printing', the 'memory pool' is released or the remaining amount of the memory is over the set amount. When it is switched back to constant speed printing, the user does not need a separate operation for changing the printing speed.

Claims (9)

In the printing speed control method of a fax data including a printer having a printing mode of 'fast printing' and 'fast printing', and a memory storing the received fax data: An encoding step of encoding the fax data received from the remote site and converting the data into coded data; An allocation step of requesting allocation of the memory; A storage step of storing the coded data in an allocated area of the memory; A checking step of checking whether the memory is 'full'; A first setting step of setting the print mode to the 'high speed printing' when the memory is 'full'; A second setting step of setting the print mode to the 'constant printing' if the memory is not 'full'; And A printing step of decoding the coded data stored in the memory, restoring the coded data, and then printing the coded data; And a printing speed control method of repeating the checking step from the checking step until all the fax data is received. The method of claim 1, wherein after performing the allocating step, If the memory is not allocated, the method for controlling the print speed of the fax data further comprises the step of blocking a call after transmitting a protocol error message to the remote. The method of claim 1, wherein any one of the first setting step and the second setting step, A printing speed control method for fax data in which the print mode is set by a print flag sent from a device that controls the allocation of the memory. The method of claim 3, wherein the printing flag, A method of controlling the printing speed of fax data including any one of bits representing the remaining amount of memory among the total 8 bits of flag data, and another bit indicating that the 'fast print' mode is set. In the printing speed control method of a fax data including a printer having a printing mode of 'fast printing' and 'fast printing', and a memory storing the received fax data: An encoding step of encoding the fax data received from the remote site and converting the data into coded data; An allocation step of requesting allocation of the memory; A storage step of storing the coded data in an allocated area of the memory; A checking step of checking whether the remaining amount of the memory is less than a preset amount; A third setting step of setting the print mode to 'high speed printing' when the remaining amount of the memory is less than the set amount; A fourth setting step of setting the print mode to 'constant printing' when the remaining amount of the memory is equal to or larger than the set amount; And A printing step of decoding the coded data stored in the memory, restoring the coded data, and then printing the coded data; And a printing speed control method of repeating the checking step from the checking step until all the fax data is received. The method of claim 5, wherein after performing the allocating step, And a blocking step of blocking a call after transmitting a protocol error message to the remote site if the memory is not allocated. The method of claim 6, wherein after performing the storing step, Determining whether the memory is 'full'; And if the memory is 'full', performing the blocking step, and if the memory is not 'full', performing the checking step. The method of claim 5, wherein any one of the third setting step and the fourth setting step, A printing speed control method for fax data in which the print mode is set by a print flag sent from a device that controls the allocation of the memory. The method of claim 8, wherein the printing flag, A method of controlling the printing speed of fax data including any one of bits representing the remaining amount of memory among the total 8 bits of flag data, and another bit indicating that the 'fast print' mode is set.