JPH09167133A - Communication equipment, electronic equipment and controlling method for them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve communication efficiency by dynamically managing communication buffers in accordance with the use state of an interface. SOLUTION: A management table 600 manages the plural buffers of a communication equipment having serial I/F, parallel I/F and option I/F. Operation I/F number 603 shows the number of I/F during operation. A maximum acquirement possible number 602 shows the number of the buffers which is decided in accordance with the number of operation I/F and which respective I/F can acquire. When one I/F is in the middle of operation, all the buffers can be given to the I/F and the maximum acquirement possible number of the buffers becomes the number of all the buffers. When two I/Fs are in the middle of operation, the buffers are distributed to two I/Fs. Thus, the maximum acquirement possible number of the buffers becomes half of all the buffers. When an I/F reception flag (604, for example) is turned on, the buffer is provided to the I/F in a range that the number (605, for example) of the buffers which I/F uses does not exceed the maximum acquirement possible number of the buffers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device, an electronic device, and a control method thereof, and more particularly to a communication device having a plurality of interfaces and a plurality of buffers, an electronic device, and a control method thereof. is there.

[0002]

2. Description of the Related Art Generally, a printer device is provided with a serial interface, a parallel interface, an optional interface for expansion, etc. as a communication means with a host computer.

Conventionally, the printer apparatus has such a structure that when all the equipped interfaces are used, a receiving buffer is assigned to each interface and reception can be performed from any interface. In such a printer device, the reception buffer is fixedly and evenly allocated to each interface. Therefore, for example, in a printer having three types of interfaces, if the user specifies the total receiving buffer capacity to be 30 Kbytes, each interface is fixedly assigned with a receiving buffer of 10 Kbytes. .

As described above, conventionally, the reception buffer once assigned to each interface is fixedly treated as a dedicated resource for that interface,
Was controlled.

[0005]

However, the above conventional example has the following problems. That is, conventionally, since the receiving buffer is fixedly assigned to each interface, when the data is received by only one interface, the receiving buffers assigned to the remaining interfaces cannot be used.
Therefore, the reception buffer cannot be used efficiently, and as a result, it becomes a cause of hindering the improvement of reception efficiency. As the scale of communication data increases, it is a big problem that the reception efficiency cannot be improved because it has a large-scale reception buffer as a whole but its use efficiency is low.

Such a problem is not limited to a printer device, and is a problem common to a communication device having a plurality of interfaces, an information processing device including the communication device, a printer device, and other electronic equipment. You can figure it out.

The present invention has been made in view of the above problems, and it is an object of the present invention to improve communication efficiency by dynamically managing a communication buffer according to the usage status of an interface.

[0008]

In order to solve the above-mentioned problems, a communication device according to the present invention is a communication device having a plurality of interface means and a plurality of buffers,
The detecting means detects an operating interface means of the plurality of interface means, and a buffer distributing means for allocating a large number of buffers to the operating interface means. It is characterized in that communication is performed using a buffer.

According to a preferred embodiment of the present invention, for example, the distribution means allocates a small number of buffers to interface means other than the operating interface means.

Further, for example, the buffer distribution means is
When there are a plurality of operating interface units, the plurality of buffers are distributed and assigned to the plurality of operating interface units.

Further, for example, the buffer is a reception buffer.

The electronic equipment according to the present invention is an electronic equipment having a plurality of interface means and a plurality of buffers, and detecting means for detecting an operating interface means of the plurality of interface means,
Buffer distribution means for allocating a large number of buffers to the operating interface means, storage means for storing received data received by each interface means in the buffer allocated by the distribution means, and the allocated buffer And an analysis unit for analyzing the stored received data.

According to a preferred embodiment of the present invention, for example, the analyzing means has means for expanding print data included in the received data, and the electronic device is based on the expanded print data. An image forming unit for forming an image on the recording medium is further provided.

Further, for example, the distributing means allocates a small number of buffers to the interface means other than the operating interface means.

Further, for example, the buffer distribution means is
When there are a plurality of operating interface units, the plurality of buffers are distributed and assigned to the plurality of operating interface units.

A control method for a communication device according to the present invention is a control method for a communication device having a plurality of interfaces and a plurality of buffers, wherein detection is performed to detect an operating interface among the plurality of interfaces. And a buffer distribution step of allocating a large number of buffers to the detected operating interface,
It is characterized in that each interface is made to execute communication using the allocated buffer.

According to a preferred embodiment of the present invention, for example, the distributing step allocates a small number of buffers to interfaces other than the operating interface.

Further, for example, in the buffer distribution step,
If there are multiple interfaces in operation,
Distributing and allocating the multiple buffers to multiple active interfaces.

Further, an electronic device control method according to the present invention is a method for controlling an electronic device having a plurality of interfaces and a plurality of buffers, wherein a detection for detecting an operating interface among the plurality of interfaces is performed. A buffer distributing step for allocating a large number of buffers to the operating interface; a storing step for storing received data received by each interface in the buffer allocated in the distributing step; and the allocated buffer. And an analysis step of analyzing the received data stored in.

The computer-readable memory according to the present invention is a computer-readable memory that stores a control procedure of a communication device having a plurality of interfaces and a plurality of buffers, and the operating interface among the plurality of interfaces. And a buffer distribution process code for allocating a large number of buffers to the operating interface.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view showing an example of the arrangement of a laser beam printer which is a printer suitable for applying the present embodiment. In the figure, reference numeral 101 denotes a laser beam printer (hereinafter, also referred to as LBP) main body, which is configured to perform registration of character patterns and affiliated forms (form data) from a data source (not shown). . Further, the LBP 101 inputs and stores character information (character code) supplied from an external device (not shown), form information, or a macro command, and creates a corresponding character pattern or form pattern according to the information. An image is formed on a recording sheet which is a recording medium.

Reference numeral 102 denotes an operation panel on which switches for operation and an LED display and an LCD display for displaying the status of the printer are arranged. 103 is LBP10
1 is a printer control unit for controlling the whole and analyzing character information and the like supplied from an external device. The printer control unit 103 mainly converts a character pattern corresponding to character information into a video signal and outputs the video signal to the laser driver 106. An external communication device unit 217 is connected to the printer control unit 103.

The laser driver 106 is the semiconductor laser 1
This is a circuit for driving 07, and switches the laser light 105 emitted from the semiconductor laser 107 on / off in accordance with the input video signal. This laser light 105
Is horizontally swung by the rotary polygon mirror 104 to scan and expose on the electrostatic drum 108. As a result, the electrostatic drum 1
An electrostatic latent image of a character pattern will be formed on 08. The latent image is developed by the developing unit 109 arranged around the electrostatic drum 108 and then transferred to the recording paper.

A cut sheet is used for this recording paper. The cut sheet recording paper is stored in a paper cassette 112 adhered to the LBP 101, and is taken into the apparatus by the paper feed roller 111 and the transport roller 110, and the electrostatic drum 1 is loaded.
08. The transferred recording paper is ejected by the ejection roller 11
5, the sheet is ejected to the outside of the apparatus.

FIG. 2 is a block diagram showing a configuration example of the printer control unit 103. The line control unit 209 includes a parallel line I / F unit 208A and a serial line I / F unit 2
08B, the option I / F unit 215 is controlled to enable communication via each interface. Parallel line I
The / F unit 208A is connected to the parallel line 219, and the serial line I / F unit 208B is connected to the serial line 220. Also, the option I / F unit 215
It is connected to the network board 217 via the expansion bus 216. And the network board 217 is
It is connected to the network 218.

Reference numeral 202 denotes a CPU which controls each device connected to the bus 203 based on the program code stored in the ROM 204. 205 is the CPU 20
2 is a RAM that functions as a work area for temporarily storing data used by 2 and print data. 206
Is a memory control unit that controls the memory 207. The memory 207 includes a reception buffer 207a that is dynamically assigned according to the reception status of each interface.

An engine control unit 210 controls the printer engine 212 via an engine interface (I / F) unit 211 to form an image. 2
A panel control unit 13 controls the panel 102.

FIG. 3 is a diagram conceptually showing a part of the program stored in the ROM 204. In FIG.
A buffer management unit (buffer management program) 01 controls the memory 207 via the memory control unit 206 and manages the reception buffer 207a. Reference numeral 302 denotes each interface 208A, 20A via the line control unit 209.
8B, 215 is a reception control unit (reception control program). A data expansion unit (data expansion program) 303 analyzes data received under the control of the reception control unit 302, expands print data, and draws it on the memory 207. In addition, in the ROM 204,
A program that controls functions other than 301 to 303 (for example,
The image drawn on the memory 207 is used as the engine control unit 210.
An engine control program for outputting to the printer engine 212 via the) is also stored.

Buffer management section 301, reception control section 30
2. The data expansion unit 303 is connected to each other through a software interface, and each control unit performs software communication to control the entire system.

The reception control unit 302 includes a buffer management unit 30.
1, the reception buffer is acquired, the reception data is stored in the reception buffer, and the reception buffer is stored in the data expansion unit 3
The received data is transferred by passing it to 03. Further, the data expansion unit 303 analyzes the received data stored in the transferred reception buffer, expands the print data on the memory 207, and releases the reception buffer to the buffer management unit 301 when the reception buffer becomes unnecessary. (return.

FIG. 4 is a diagram conceptually showing a partial structural example of a register provided in the line control unit 209. The reception control unit 302 (that is, the CPU 202) uses the register 40
By referring to the contents of 0, the interface requesting reception can be recognized.

The register 400 has flag bits indicating the respective states of the interface units 208A, 208B and 215. An option I / F reception bit 401 indicates a reception request to the option I / F unit 215. A serial I / F reception bit 402 indicates a reception request to the serial I / F unit 208B.
A parallel I / F reception bit 403 indicates a reception request to the parallel I / F unit 208A.

FIG. 5 is a diagram conceptually showing an example of the buffer structure. In the figure, reference numeral 500 denotes buffer information, which includes a Next pointer 501, a busy flag 502, a used I / F 503, a buffer length 504, and a buffer pointer 505. The Next pointer 501 is a pointer for queuing this buffer. 5
02 is a busy flag indicating whether or not this buffer is in use. Reference numeral 503 is a flag indicating which interface this buffer holds data received from. 504 is buffer length information indicating the length of the received data. Reference numeral 505 is a buffer pointer that points to a real memory, and points to a corresponding position in the memory space 506 (actually, the memory 207). The received data is stored in the memory area designated by this buffer pointer.

In this embodiment, the buffer information 5
00 manages a 1 Kbyte buffer area. Also,
The buffer management unit 301 uses 60 pieces of buffer information 500.
And manages a buffer area 207a of 60 Kbytes in total.

FIG. 6 is a diagram showing an example of a management table for managing the buffer structure. In the figure, 60
Reference numeral 0 is a management table, which includes 601 to 609. 60
1 is unused buffer number information indicating the number of unused buffers. 602 is maximum acquirable number information indicating the maximum number of buffers that can be secured, and is 60 in the present embodiment. Reference numeral 603 is operation I / F number information indicating the number of interfaces currently receiving data.

604 is a serial line I / F unit 208B
Is a reception flag indicating a reception request from the
Reference numerals 6 and 608 are reception flags indicating reception requests from the parallel line I / F unit 208A and the option I / F unit 215, respectively. Further, 605 is a serial line I / F unit 20.
Indicates the number of buffers currently in use for reception from 8B. Similarly, 607 and 609 are parallel lines I, respectively.
Indicates the number of buffers currently being used in reception from the / F unit 208A and the option I / F unit 215.

In the present embodiment, the serial I / F usage number 605, the parallel I / F usage number 606, and the option I / F usage number 609 are initially set in order to enable reception from any interface. Each is set to 1, and one reception buffer is assigned to each interface in advance. Therefore, in the initial state, the number of unused buffers 601 is 57.

FIG. 7 is a flow chart showing a process of specifying the interface relating to the reception request in the reception control unit 302. As described above, the substance of the reception control unit 302 includes the program code stored in the ROM 204 and the CPU 202 that operates based on the program code. Further, this processing is executed, for example, every time a reception request for any interface is generated.

The reception control section 302 refers to the register 400 to determine which interface the reception request is made to. That is, first, the register 4
It is determined whether the serial I / F reception bit 401 of 00 is turned on (step S701), and if it is turned on, reception by the serial line I / F unit 208B is executed (step S701). S702). If the serial I / F reception bit 402 is off,
It is determined whether or not the parallel I / F reception bit 403 is turned on (step S703), and if it is turned on, reception by the parallel line I / F unit 208A is executed (step S704). . When the parallel I / F reception bit 401 is off,
It is determined whether or not the option I / F reception bit 401 is turned on (step S705), and if it is turned on, reception by the option I / F unit 215 is executed.

FIG. 8 is a flow chart showing a process of receiving data in the reception control unit 302 via the interface relating to the reception request. As described above, the substance of the reception control unit 302 is the program code stored in the ROM 204 and the CPU 202 that operates based on the program code.
including. Further, this processing is executed after the interface related to the reception request is specified by the processing according to the flowchart of FIG. 7. Note that, while receiving data via one interface, if a reception request from another interface occurs, the following processing will be executed in parallel.

First, in step S801, the operation I / F
1 is added to the number 603 to determine the number of interfaces currently in operation. Then, in step S802,
The line controller 209 is controlled to receive data via the interface relating to the reception request. At this time, the reception control unit 302 identifies the interface to be received by the above processing. Further, as the reception buffer, the one allocated to the interface relating to the reception request is used (each buffer is received as a unit).

In step S803, it is determined whether or not the reception of all data has been completed using the assigned reception buffer. When it is determined that the reception is completed, the buffer length 504 and the used I / F 503 of the buffer information 500 are set in step S813, and the buffer is transferred to the data expansion unit 301 in step S814. Since the reception operation has been completed by the processing up to this point, next, in step S815, the management table 60
1 is subtracted from the operation I / F number information 603 of 0.

On the other hand, if it is determined in step S803 that all data has not been received yet, step S80
In step 4, it is determined whether or not the received data satisfies the allocated receiving buffer capacity (1 kbyte). If the receiving buffer is not full, the process returns to step S802 and steps S802 to S803 are repeated.

When the allocated receive buffer is full, the process proceeds to step S805, the buffer length information 504 and the used I / F information 503 of the buffer information 500 are set, and the receive buffer is expanded in step S816. Transfer to 301.

Next, in step S807, in order to acquire a new reception buffer, the I / F reception flag (604, 606,
608) is set, and in step S808, the reception buffer is acquired from the buffer management unit 301 (however, it may not be acquired in some cases).

In step S809, it is determined whether or not a new reception buffer has been acquired. If the new reception buffer cannot be acquired, the line control unit 209 is set to busy in step S810 to indicate that reception is impossible. Then, steps S807 to S are performed until a new reception buffer can be acquired.
809 is repeated. If a new reception buffer can be acquired, the busy state is canceled in step S811.

The above processing is repeatedly executed until all data is received.

Next, the operation of the buffer management unit 301 will be described. 9 and 10 are flowcharts showing an operation example in the buffer management unit 301. As described above, the substance of the buffer management unit 301 is R
It includes a program code stored in the OM 204 and a CPU 202 that operates based on the program code.

The buffer management unit 301 sets the maximum obtainable number 602, which is the number of usable buffers, according to the number of operating interfaces, and provides the receive buffer within the range of the maximum obtainable number. Further, this operation is executed each time a reception buffer acquisition request is received from the reception control unit 302.

When receiving the acquisition request of the reception buffer from the reception control unit 302, first, in step S901, the unused buffer number information 601 of the management table 600 is referred to,
It is determined whether there is an unused receive buffer. If there is no unused receive buffer, step S
In step 923, the reception control unit 302 is notified of control information indicating that the reception buffer cannot be acquired (“buffer acquisition failure”).

On the other hand, if there is an unused receiving buffer, the process proceeds to step S902, and a receiving buffer in which the in-use flag 502 of the buffer information 500 is off (indicating unused) is searched.

In steps S904 to S908, the maximum obtainable number is 6 according to the number of operating interfaces.
Set 02. That is, the operation I / F number information 603 indicating the number of operating interfaces is referred to, and if the number is 1, all buffers may be allocated to the operating interface, so the maximum obtainable number information 602. 58 (the other two are reserved in advance for other interfaces). Also, operation I /
When the number of F is 2, since two interfaces are operating, the maximum obtainable number 602 is ½ of all buffers, that is, 29. When the number of operating I / Fs is 3, three interfaces are operating, so the maximum obtainable number 602 is one-third of all buffers, that is, 20.

In steps S909 and S911, the I / F reception flags 605, 607, and 609 of the management table 600 are determined in order to determine the interface that issued the acquisition request.
See After clearing the corresponding I / F flag, the number of I / Fs used is compared with the maximum obtainable number, and I
If the number of used / Fs is less than the maximum number acquired, 1 is added to the corresponding number of used I / Fs.

That is, the serial I / F reception flag 60
4 is on, the I / F flag 604
Is cleared (step S910), the serial I / F used number information 605 is compared with the maximum obtainable number information 602, and if the serial I / F used number information 605 is less than the maximum obtainable number information 602, the serial I / F number is acquired. 1 is added to the / F used number information 605 (step S917). On the other hand, when the serial I / F usage number information 605 is equal to the maximum obtainable number information 602, the reception buffer cannot be obtained, and therefore "buffer acquisition failure" is received.
02 is notified (step S923).

If the parallel I / F reception flag 606 is turned on, the I / F flag 606 is cleared (step S912), and the parallel I / F usage number information 607 and the maximum obtainable number information 602 are acquired. And the parallel I / F usage number information 607 indicates the maximum acquisition number information 6
If the number is less than 02, 1 is added to the parallel I / F usage number information 607 (step S918). On the other hand, when the parallel I / F usage number information 607 is equal to the maximum obtainable number information 602, the reception buffer cannot be obtained, and therefore "buffer acquisition failure" is notified to the reception control unit 302 (step S923).

Also, the option I / F reception flag 608
Is turned on, the I / F flag 608 is cleared (step S913), the option I / F used number information 609 is compared with the maximum obtainable number information 602, and the option I / F used number information 609 is set. Is less than the maximum acquired number information 602, 1 is added to the option I / F used number information 609 (step S91).
9). On the other hand, when the option I / F usage number information 609 is equal to the maximum obtainable number information 602, the buffer cannot be obtained, and therefore "buffer acquisition failure" is notified to the reception control unit 302 (step S923).

In steps S920 to S922, the management table 600 is updated to notify the reception control section 302 that the reception buffer has been successfully acquired. That is, in step S920, the number of unused buffers 601 in the management table 600 is decremented by 1. Next, step S92
In 1, the busy flag 502 of the buffer information 500 (searched in step S902) is turned on, and in step S922, the reception control unit 302 is notified that the reception buffer has been successfully acquired (“buffer acquisition success”). .

When a plurality of interfaces are in operation, the reception control unit 302 makes a reception buffer acquisition request corresponding to the interface related to the operation, and a series of processing is executed correspondingly.

As described above, the number of receiving buffers allocated to an interface is dynamically controlled according to the number of operating interfaces, and when the number of operating interfaces is small, concentrate on the interface. When a large number of operating interfaces are allocated by allocating the reception buffers, the reception buffers can be distributed to the interfaces to improve the use efficiency of the reception buffers.

Next, the operation of the data expansion section 303 will be described. FIG. 11 is a flowchart showing an operation example in the data expansion unit 303. As mentioned above,
The substance of the data expansion unit 303 is a program code stored in the ROM 204 and a CPU that operates based on the program code.
Including 202.

The data expansion unit 303 is a reception control unit 302.
The data in the reception buffer transferred (logically transferred) from is analyzed and expanded, and when the reception buffer is no longer needed, it is returned (opened) to the buffer control unit 301, and the reception control unit 30
Waiting for transfer of the receive buffer from 2.

First, in step S1101, the data in the reception buffer transferred from the reception control unit 302 is analyzed and expanded in a predetermined expansion area (not shown) on the memory 207. The expanded data (bitmap data) is sequentially transferred to the engine control unit 210, and the printer engine 2
An image is formed by 12.

In steps S1102 to S1106, the interfaces related to the reception buffer for transfer are
It is confirmed by referring to the used I / F information 503 of the buffer information 500 of the reception buffer, and the used number of the corresponding interface of the management table 600 is decremented by one.

That is, the use I / of the buffer information 500
F information 503 is referred to, and as a result, serial line I / F
When the unit 208B is used, the serial I / F usage number 605 is reduced by one. In addition, the parallel I / F unit 21
If 5 is used, the number of parallel I / Fs used is 60
Subtract 1 from 7. Further, when the option I / F 215 is used, the option I / F usage number 609 is reduced by one.

Next, in step S1107, the in-use flag 502 of the corresponding buffer information 500 is turned off, and in step S1108, 1 is added to the unused buffer number 601 of the management table 600.

The buffer management unit 301 in the case where reception requests for a plurality of interfaces conflict with each other,
The arbitration of the reception control unit 302 and the data expansion unit 303 may be performed based on a known technique.

As described above, according to the present embodiment, the receiving buffer can be efficiently used by dynamically allocating the receiving buffer according to the usage status of the interface.

Although the above description dynamically allocates the reception buffer to the three interfaces,
The present invention is not limited to this, and can be applied to the case where the receiving buffer is dynamically assigned to a plurality of interfaces other than three. Also, regarding the type of interface, not only the interfaces of different types of communication methods may be configured, but also a plurality of interfaces of the same communication method may be included.

In the above description, while a plurality of interfaces are in operation, buffers are evenly allocated to each interface related to the operation. For example, depending on the communication speed of each interface,
A corresponding number of receive buffers may be distributed.

Although the above description relates to the allocation of the reception buffer in the printer device, the present invention relates to a communication device having a plurality of interfaces or an electronic device such as an information processing device including the communication device. It is self-evident that it is widely applicable.

In general, the capacity of the transmission buffer may be smaller than that of the reception buffer, but the present invention can be applied to the transmission buffer, or can be applied to both the reception buffer and the transmission buffer. .

Even when the present invention is applied to a system composed of a plurality of devices (eg, host computer, interface device, reader, printer, etc.), a device composed of one device (eg, copying machine, (For example, a facsimile machine). Further, an object of the present invention is to provide a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or an apparatus, and a computer (or CPU or MPU) of the system or apparatus to store the storage medium. Needless to say, this can also be achieved by reading and executing the program code stored in the program.

In this case, the program code itself read from the storage medium realizes the novel function of the present invention, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

When the computer executes the readout program code, not only the functions of the above-described embodiment are realized, but also the OS (Operating System) running on the computer based on the instruction of the program code. ) May perform some or all of the actual processing, and the processing may realize the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instruction of the program code, It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

[0078]

As described above, according to the present invention, it is possible to improve the reception efficiency by dynamically managing the communication buffer according to the usage status of the interface.

[0079]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration example of a laser beam printer which is a printer suitable for applying an embodiment.

FIG. 2 is a block diagram illustrating a configuration example of a printer control unit.

FIG. 3 is a diagram conceptually showing a part of a program stored in a ROM.

FIG. 4 is a diagram conceptually illustrating a partial configuration example of a register included in a line control unit.

FIG. 5 is a diagram conceptually showing an example of a buffer structure.

FIG. 6 is a diagram showing an example of a management table for managing a buffer structure.

FIG. 7 is a flowchart showing a process of identifying an interface relating to a reception request in the reception control unit.

FIG. 8 is a flowchart showing a process of receiving data in the reception control unit via the interface relating to the reception request.

FIG. 9 is a flowchart illustrating an operation example of a buffer management unit.

FIG. 10 is a flowchart illustrating an operation example of a buffer management unit.

FIG. 11 is a flowchart showing an operation example in a data expansion unit.

Claims (13)

[Claims] 1. A communication device having a plurality of interface means and a plurality of buffers, wherein the detecting means detects an operating interface means of the plurality of interface means, and the operating interface means. And a buffer distributing unit that allocates a large number of buffers, wherein the operating interface unit performs communication using the allocated buffer. 2. The distribution means, with respect to interface means other than the operating interface means,
2. A small number of buffers are allocated, and
The communication device according to claim 1. 3. The buffer distributing means distributes and allocates the large number of buffers to a plurality of operating interface means when a plurality of operating interface means exist. Item 1
Alternatively, the communication device according to claim 2. 4. The communication device according to claim 1, wherein the buffer is a reception buffer. 5. An electronic device having a plurality of interface means and a plurality of buffers, wherein the detecting means detects an operating interface means of the plurality of interface means, and the operating interface means. Buffer distribution means for allocating a large number of buffers, storage means for storing the received data received by each interface means in the buffer allocated by the distribution means, and analysis of the received data stored in the allocated buffer An electronic device comprising: an analyzing unit. 6. The analyzing means includes means for expanding print data included in the received data, and the electronic device further includes an image forming means for forming an image on a recording medium based on the expanded print data. The electronic device according to claim 5, further comprising: 7. The distributing means, with respect to interface means other than the operating interface means,
6. The allocation of a small number of buffers.
Alternatively, the communication device according to claim 6. 8. The buffer distributing means distributes and allocates the large number of buffers to a plurality of operating interface means when a plurality of operating interface means exist. Item 5
The electronic device according to claim 7. 9. A method of controlling a communication device having a plurality of interfaces and a plurality of buffers, the method comprising: a detecting step of detecting an operating interface among the plurality of interfaces; A method of controlling a communication device, comprising: a buffer distribution step of allocating a large number of buffers to each interface, and causing each interface to execute communication using the allocated buffer. 10. The method according to claim 9, wherein the distributing step allocates a small number of buffers to interfaces other than the operating interface. 11. The buffer distributing step, in the case where there are a plurality of operating interfaces, distributing and allocating the large number of buffers to a plurality of operating interfaces. Alternatively, the method of controlling the communication device according to claim 10. 12. A method of controlling an electronic device having a plurality of interfaces and a plurality of buffers, comprising: a detecting step of detecting an operating interface among the plurality of interfaces; and a detecting step for the operating interface. A buffer distributing step of allocating a number of buffers, a storing step of storing received data received by each interface in the buffer allocated in the distributing step, and an analyzing step of analyzing the received data stored in the allocated buffer A method for controlling an electronic device, comprising: 13. A computer-readable memory that stores a control procedure of a communication device having a plurality of interfaces and a plurality of buffers, and a code of a detection step of detecting an operating interface among the plurality of interfaces, A code for a buffer distribution step that allocates a number of buffers to the operating interface;