JPH09321994A - Fax machine - Google Patents

Abstract

(57) Abstract: The present invention, when performing multiple operations of an operation process that requires an encoding / decoding process, the number of operations is smaller than the number of operations to be encoded / decoded at a high compression rate. Provided is a facsimile device that efficiently uses compression encoding / decoding resources. SOLUTION: When a transmission file is started, depending on whether the JBIG method is specified in the transmission file,
In addition, depending on whether or not the transmission destination has the JBIG receiving function even if the transmission file is designated as JBIG,
The transmission is performed by selecting whether to perform encoding according to the JBIG method and to transmit or to perform transmission according to the normal encoding method (steps S22 to S30). When the transmission file is not designated as JBIG, the JBIG encoding method or the normal encoding method is used depending on whether the destination is JBIG specification or whether the transmission image data has JBIG encoded data. Or select and send (step S
31 to S33).

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 a high compression code for encoding / decoding at a high compression rate when multiple operation processes requiring encoding / decoding are performed in multiple operations. The present invention relates to a facsimile device that appropriately and efficiently uses encryption / decryption resources.

[0002]

2. Description of the Related Art Facsimile machines have become more sophisticated with the spread thereof. When the facsimile machines become more sophisticated, how to efficiently use these highly functional resources has become an important issue. .

Therefore, as a conventional technique for resource management, there is, for example, a facsimile machine described in Japanese Patent Laid-Open No. 3-268680. This facsimile machine stores an image storage memory and this image storage memory. And an encoding unit for encoding an image, wherein the encoding unit is
The feature is that the encoding is performed according to the number of gradations of the image to be stored. According to this facsimile apparatus, when the reading mode is selected and the accumulation start is instructed, the image data read by the reading unit is transferred line by line to the encoding unit for encoding, but the reading mode is binary. An image is encoded by the MMR method, and a multi-valued image is encoded by the MH method, and is stored in the image memory, thereby substantially reducing the data amount and improving the use efficiency of the image memory. be able to.

Further, there is a decoding type image processing apparatus described in Japanese Patent Application Laid-Open No. 7-264371, and in this decoding type image processing apparatus, a plurality of functions including a facsimile function are included in a CODEC (encoding / decoding unit). ) And page memory resources are shared, the resource use method is improved by switching the resource control method according to an operation request.

[0005]

However, in such a conventional facsimile apparatus, there is still room for improvement in effectively using a plurality of resources included in the facsimile apparatus.

That is, recently, as a facsimile apparatus, a facsimile apparatus capable of accommodating a plurality of lines and simultaneously performing a facsimile communication by a plurality of lines has appeared, and the encoding method is the conventional one. Like MH (Modi
fied Huffman) coding method, MR (Modufied Relative)
element address designate) encoding method, or
Not only standard encoding methods for binary facsimile such as MMR (Modified MR) encoding method but also, for example, ITU-T
Encoding / decoding of high compression encoding method that encodes / decodes at a high compression rate such as JBIG (joint binary image group) and JBIG encoding method using arithmetic encoding that are standardized by ISO and ISO Facsimile machines equipped with encoding / decoding resources such as copy machines have appeared. Then, a facsimile apparatus capable of accommodating a plurality of such lines and simultaneously processing a plurality of operation processes that require an encoding / decoding process such as a transmission process and a recording / outputting operation of image data in an image memory. However, when the encoding / decoding unit of the high compression encoding method is provided only in a number smaller than the number of operations capable of performing the simultaneous operation processing, the above-described conventional technique does not provide efficient encoding / decoding resources. It cannot be used, and the encoding process suitable for the transmission file and the encoding process suitable for the transmission destination cannot be performed. As a result, there is a problem that the image quality of the transmitted image data is deteriorated, the data amount is increased, the communication time is long, and the communication cost is high.

Further, if a high-compression encoding system encoding / decoding unit is always secured for facsimile transmission,
When the encoding / decoding unit of the high compression encoding method is used by another communication process, etc. However, there is a problem that the transmission time of the transmission file that requires immediacy is delayed.

Therefore, in the invention according to claim 1, a high compression encoding / decoding means for encoding / decoding image data at a high compression rate is provided at the same time as operation processing requiring encoding / decoding processing. If the number of files to be processed is smaller than the number of files that can be processed, the designated transmission file can be sent only when it is instructed to start calling after acquiring the high compression encoding / decoding means in file units. At the time of transmission, the high compression encoding / decoding means is acquired, encoded, and then transmitted, thereby transmitting a transmission file of image data such as a halftone image,
When creating a transmission file, the high compression encoding method can be specified for each file, the high compression encoding / decoding means can be used efficiently, and the data amount can be reduced to reduce the communication cost. It is an object of the present invention to provide a facsimile device that can be reduced.

According to a second aspect of the present invention, the high compression encoding / decoding means for encoding / decoding image data at a high compression rate can simultaneously process the operation process requiring the encoding / decoding process. If there are less than the maximum number, the transmission file to the transmission destination will be sent only when the high compression encoding / decoding means is acquired for each transmission destination and then the call activation is instructed. At the time of transmission, the high compression encoding / decoding means is acquired, encoded, and then transmitted, so that the destination receives the image data encoded by the high compression encoding / decoding means. , High compression coding method
Only when it is possible to transmit by effectively using the decoding resources, the transmission file of image data such as halftone images,
When creating a transmission file, you can specify the high compression encoding method and send it, and you can use the high compression encoding and decoding means effectively and efficiently, and reduce the data amount. It is an object of the present invention to provide a facsimile device that can reduce communication costs.

According to a third aspect of the invention, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate can simultaneously process the operation process requiring the encoding / decoding process. If the transmission file includes a page encoded by an encoding method that requires encoding / decoding by the high compression encoding / decoding means, the transmission file is included in the transmission file. After obtaining the high-compression encoding / decoding means for all pages of the above, by performing the calling operation processing, the high-compression encoding / decoding is performed for each transmission file and each destination.
Even if the acquisition of the decoding means is not instructed and the acquisition of the high compression encoding / decoding means cannot be instructed like the transfer file, the high compression encoding / decoding means is required. A high compression encoding / decoding means can be acquired for a file to be transmitted, and the image data can be encoded appropriately, and the data amount can be reduced.
It is an object of the present invention to provide a highly usable facsimile apparatus capable of reducing communication costs.

According to a fourth aspect of the invention, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate can simultaneously process the operation process requiring the encoding / decoding process. If it is possible to acquire the high compression encoding / decoding means, if it is possible to obtain, it is encoded by the high compression encoding method and transmitted,
If it cannot be obtained, it is possible to efficiently use the high compression encoding / decoding means by encoding with a low compression encoding method and to transmit, and to provide a facsimile apparatus with good operability. Has an aim.

[0012]

According to a first aspect of the present invention, there is provided a facsimile apparatus including multiple operation control means capable of simultaneously processing a plurality of operation processes that require encoding / decoding processing,
A plurality of high-compression encoding / decoding means that is less than the number of operations of the plurality of operation processing that encodes / decodes image data at a predetermined high compression rate, and is lower than the high-compression encoding / decoding means. A plurality of low compression encoding / decoding means for encoding / decoding image data at a compression rate, and an encoding / decoding resource composed of the high compression encoding / decoding means and the low encoding / decoding means. Resource management means for managing the high compression encoding
Designating means for designating, in transmission file units, that the call is activated after acquiring the decryption means, and for each transmission file,
Control means for causing the multiple operation control means to perform the calling operation processing after the high-compression encoding / decoding means is acquired by the resource management means according to the specification of the specifying means. It has achieved the above objectives.

According to the above construction, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate is capable of simultaneously processing the operation processing requiring the encoding / decoding processing. If the number of files is smaller than the above, only when it is instructed to start calling after acquiring the high compression encoding / decoding means in file units, High-compression encoding / decoding means is acquired, encoded, and then transmitted, so a transmission file for image data such as halftone images can be specified for each transmission file when a transmission file is created. It is possible to reduce the amount of data and the communication cost.

According to a second aspect of the present invention, there is provided a facsimile apparatus in which multiple operation control means capable of simultaneously processing a plurality of operation processes requiring encoding / decoding processing and image data are encoded at a predetermined high compression rate. A plurality of high compression encoding / decoding means that does not reach the number of operations of the plurality of operation processes to be decoded, and image data encoding / decoding at a compression rate lower than that of the high compression encoding / decoding means A plurality of low compression encoding / decoding means, a resource management means for managing the encoding / decoding resources comprising the high compression encoding / decoding means and the low encoding / decoding means, and the high compression Designating means for designating, on a transmission destination unit basis, to start calling after acquiring the encoding / decoding means, and for each transmission destination, the high compression code by the resource management means according to the designation of the designating means. After acquiring the encryption / decryption means By and a control means for causing the calling operation processing to the designated destination by the multiplex operation control means have achieved the above objects.

According to the above construction, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate is capable of simultaneously processing the operation processing requiring the encoding / decoding processing. When the transmission file is transmitted to the transmission destination, only when it is instructed to start calling after acquiring the high compression encoding / decoding means for each transmission destination , The high compression encoding / decoding means is acquired, encoded, and then transmitted, so that only when the encoding / decoding resources of the high compression encoding method can be effectively used, halftone images, etc. The image data transmission file can be transmitted by specifying the high compression encoding method for each file when creating the transmission file, and the high compression encoding / decoding means can be used effectively and efficiently. And the amount of data Hesi, it is possible to reduce the communication cost.

According to a third aspect of the present invention, there is provided a facsimile apparatus in which multiple operation control means capable of simultaneously processing a plurality of operation processes requiring an encoding / decoding process and image data are encoded at a predetermined high compression rate. A plurality of high compression encoding / decoding means that does not reach the number of operations of the plurality of operation processes to be decoded, and image data encoding / decoding at a compression rate lower than that of the high compression encoding / decoding means A plurality of low compression encoding / decoding means, a resource managing means for managing the encoding / decoding resources including the high compression encoding / decoding means and the low encoding / decoding means, and a transmission file An image storage unit that stores image data, and a transmission file stored in the image storage unit includes an encoded page that requires encoding / decoding by the high compression encoding / decoding unit. And the transmission Control means for causing the multiple operation control means to perform the calling operation processing after the resource management means acquires the high compression encoding / decoding means for all pages of the file, It has achieved the above objectives.

According to the above construction, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate is capable of simultaneously processing the operation processing requiring the encoding / decoding processing. If the transmission file includes pages that are encoded by an encoding method that requires encoding / decoding by the high compression encoding / decoding means when the number of pages is less than Since the page is subjected to the calling operation processing after the high compression encoding / decoding means is acquired, it is not necessary to instruct the acquisition of the high compression encoding / decoding means for each transmission file or each destination. In addition, even when the instruction to acquire the high compression encoding / decoding means cannot be given like the transfer file, the high compression encoding code is applied to the file requiring the high compression encoding / decoding means. Obtaining and decrypting means and transmitting Can, it is possible to properly encode the image data, by reducing the amount of data, it is possible to reduce the communication cost.

According to a fourth aspect of the present invention, there is provided a facsimile apparatus in which multiple operation control means capable of simultaneously processing a plurality of operation processes requiring encoding / decoding processing and image data are encoded at a predetermined high compression rate. A plurality of high compression encoding / decoding means that does not reach the number of operations of the plurality of operation processes to be decoded, and image data is encoded / decoded at a compression rate lower than that of the high compression encoding / decoding means Multiple low compression coding
Decoding means, resource management means for managing coding / decoding resources consisting of the high compression coding / decoding means and the low coding / decoding means, and at the time of starting the multiplex operation control means of the transmission file. Determining means for determining whether the high compression encoding / decoding means can be acquired, and the resource management when the determination means determines that the high compression encoding / decoding means can be acquired. Means for obtaining the high compression encoding / decoding means, the high compression encoding / decoding means for encoding the transmission file, and the multiplexing operation control means for transmission, and the determining means for the high compression encoding. When it is determined that the acquisition / decoding means cannot be acquired, the resource management means causes the low compression encoding / decoding means to acquire the transmission file by the low compression encoding / decoding means. By and a control means for transmitting by the multi-operation control means by Goka have achieved the above objects.

According to the above construction, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate is capable of simultaneously processing the operation processing requiring the encoding / decoding processing. Higher compression coding, if you have less than
It is judged whether the decoding means can be acquired, and if it can be acquired, it is encoded by the high compression encoding method and transmitted, and if it cannot be acquired, it is encoded by the low compression encoding method and transmitted. It is possible to efficiently use the high compression encoding / decoding means and improve the operability of the facsimile apparatus when using the high compression encoding / decoding means.

[0020]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the embodiments described below are preferred embodiments of the present invention, and therefore, various technically preferable limitations are added. However, the scope of the present invention is not limited to the following description. The embodiments are not limited to these embodiments unless otherwise specified.

1 to 8 are diagrams showing a facsimile apparatus to which an embodiment of the facsimile apparatus of the present invention is applied.

FIG. 1 is a circuit block diagram of a facsimile apparatus 1 of the present invention. The facsimile apparatus 1 includes a system control unit 2, a reading encoding unit 3, a reading control unit 4, a recording decoding unit 5, and a recording unit. The control unit 6, the operation unit 7, the communication encoding / decoding unit 8, the resource management unit 9, the file management unit 10, the destination management unit 11, the communication control unit 12, the image memory management unit 13, and the like are provided. Each unit is connected to the bus 14.

The system control unit (control means) 2 is a CPU
(Central Processing Unit), ROM (Read Only Me)
mory) and a RAM (Random Access Memory), etc., and in the ROM, a basic control processing program and an encoding / decoding resource management program as the facsimile apparatus 1, a multiplex communication control program, an input / output control program, etc. Various control programs are stored,
System data and various data necessary for executing these control programs are stored. The system control unit 2 controls each unit of the facsimile device 1 by using the RAM as a work memory based on the program in the ROM by the CPU, executes the process as the facsimile device 1, and performs encoding / decoding. It executes various processing such as resource management processing, multiplex communication control processing, and input / output control processing.

The reading control unit 4 comprises a reading unit and a drive control unit for controlling the driving of the reading unit. As the reading unit, for example, an image scanner using a CCD (Charge Coupled Device) is used. The reading control unit 4 drives and controls the reading unit under the control of the system control unit 2 by the drive control unit, scans the document, reads the image of the document at a predetermined resolution, and reads the image data of the read document. It outputs to the encoding unit 3.

The reading encoding unit 3 stores a predetermined encoding method exclusively for storing the image data sent from the reading control unit 4,
For example, the image data is encoded by the MMR method and the encoded image data is output to the image memory management unit 13.

The recording decoding unit 5 is for decoding the encoded image data in order to record and output the image data on a recording sheet, and various encoding systems provided in the facsimile apparatus 1
For example, a decoding unit for a normal binary standard encoding method such as MH method, MR method and MMR method and a high compression rate encoding method such as JBIG is provided to perform a decoding process of image data. The JBIG system is capable of compressing image data at a higher compression rate than the standard facsimile standard encoding system such as the MH encoding system, the MR encoding system, the MMR encoding system, and the information such as halftone images. High-speed communication is possible by efficiently compressing a large amount of image data.
The high compression encoding method is not limited to the JBIG method.

The recording control unit 6 is provided with a recording unit for recording image data on recording paper, for example, an electrophotographic recording apparatus and a drive control unit for controlling the drive of this recording unit, and the recording decoding unit. The received image data decoded in 5 and the accumulated image data accumulated in the image memory management unit 13 are recorded and output on a recording sheet.

The operation unit (designating means) 7 is provided with various operation keys such as a ten-key pad, a start key and a one-touch number key, and a display (for example, a liquid crystal display). From the operation keys, various operations such as transmission operation are performed. Command operations, in particular, a transmission destination registration operation, a transmission destination designation operation, a transmission file creation instruction operation, a coding mode designation operation, etc. are performed, and the contents of the command input from the operation keys and the operator from the facsimile machine 1 are displayed on the display. Various information to be notified is displayed.

The communication encoding / decoding unit 8 encodes and decodes image data for facsimile communication, and uses a plurality of ordinary two as encoding / decoding resources.
Higher than the encoding / decoding unit of the standard encoding method for value facsimile (hereinafter referred to as the normal encoding / decoding unit) and this normal encoding / decoding unit (low compression encoding / decoding means). A high compression encoding method having a compression rate smaller than the number of normal encoding / decoding sections, for example, a JBIG encoding / decoding section (hereinafter referred to as a JBIG encoding / decoding section), For example, as the normal encoding / decoding unit, two encoding / decoding units of an ordinary standard encoding method for binary facsimile such as MH system, MR system and MMR system, and a JB
As the IG encoding / decoding unit (high compression encoding / decoding means), one JBIG encoding / decoding unit is provided.

The resource management unit (resource management means) 9 operates under the control of the system control unit 2 and low compression encoding / decoding as an encoding / decoding resource of the communication encoding / decoding unit 8. It manages the encoding unit and the high compression encoding / decoding unit, that is, manages resource allocation and release. That is, the resource management unit 9 stores the communication resource management information as shown in FIG. 2 in the internal memory (for example, RAM), and notifies the system control unit 2 of this communication resource management information for system control. Under the control of the unit 2, it manages the allocation and release of the communication encoding / decoding unit 8. The communication resource management information is shown in FIG.
2, it is composed of information such as resource type, free information, and communication type. In FIG. 2, MH / MR / MMR, which are two normal encoding / decoding units of the encoding / decoding unit 8 for communication, are used.
The resource 1 and the MH / MR / MMR resource 2 are vacant, indicating that one JBIG resource, which is one JBIG encoding / decoding unit, is in use, and one G3 communication line is being used.

The file management unit 10 includes the system control unit 2
The file management information is stored in the internal memory (for example, RAM) stored in the internal memory (for example, RAM). This file management information is, as shown in FIG. 3, a file number assigned by the system control unit 2 for each transmission file, a file type indicating the type of the transmission file such as transmission, broadcast transmission, and memo transfer transmission, JBIG. The file management unit 10 includes a JBIG designation indicating the presence or absence of encoding according to the method, a transmission destination, an image memory number that is a management number of the transmission file in the image memory, and the file management unit 10 based on the file management information. Manage.

The destination management unit 11 operates under the control of the system control unit 2 and manages the registration and citation of each transmission destination. The destination management unit 11 stores the destinations as shown in FIG. 4 in an internal memory (for example, RAM). Stores management information. As shown in FIG. 4, this destination management information includes a one-touch number, a destination number that is a destination telephone number registered corresponding to the one-touch number, and a JBI registered with or without JBIG designation.
The destination management unit 11 is configured by each information such as G designation, and manages the destination number and the designation of JBIG based on the destination management information. To register the destination management information, the system control unit 2 operates a key on the operation unit 7 to input a destination number, a one-touch number to be registered in association with the destination number, and a J number.
This is performed by designating whether or not BIG is designated.

The communication control unit (multiple operation control means) 12 is
At least two lines are connected, and facsimile communication using two or more lines is performed at the same time. That is, the communication control unit 12 operates under the control of the system control unit 2 and multiplexes the facsimile communication of at least two lines or more.

Image memory management unit (image storage means) 13
Includes an image memory configured by a hard disk or a RAM or the like for storing image data in file units, and a management unit for managing files in the image memory. The management unit includes an image memory as shown in FIG. Stores management information. As shown in FIG. 5, the image memory management information includes an image memory number assigned to each file in the image memory, a page number indicating the page number of the file, and an encoding method indicating the encoding method of the file. Each information is made up of, for example, in FIG.
4 ”file has 2 pages, and encoding method is MMR
And the JBIG method.

Next, the operation will be described. First, a transmission file creation process when a transmission file is created by designating an encoding method for each transmission file will be described with reference to FIG.

When the facsimile device 1 is in the standby state, as shown in FIG. 6, when a transmission file creation instruction is issued from the operation unit 7 (step S1), the system control unit 2 shifts to the transmission file creation mode. Then, it is checked whether the JBIG method is designated as the encoding method (step S2). The designation of the JBIG method is designated by the operator of the facsimile apparatus 1 designating the halftone mode from the operation unit 7 when the original is a halftone image such as a photograph, and the system control unit 2 When the halftone mode is designated, it is determined that the JBIG method has been designated.

This JBIG system is, as described above, M
The image data can be compressed at a higher compression rate than the standard facsimile standard encoding system such as the H, MR and MMR encoding systems, and the image data having a large amount of information such as a halftone image can be efficiently compressed. Therefore, high-speed communication is possible.

When the JBIG designation is made, the system control unit 2 performs the JBIG designation registration and ends the processing (step S3). The system control unit 2 reads this JBIG designation registration with the reading control unit 4 to read the document,
The image data of the read document is encoded by the reading and coding unit 3 by the MMR system which is the above-mentioned dedicated storage system, stored in the image memory of the image memory management unit 13, and a file number is given to the transmission file. Then, the file management unit 10 is notified of the assigned file number and image memory number, and the one-touch number, which is the transmission destination of the transmission file, is also notified, as shown in FIG. This is performed by registering the file management information of the file management unit 10 as the file number “0001”, for example.

If the JBIG designation is not made in step S2, normal registration is performed and the process ends (step S4). In the same manner as described above, the system control unit 2 reads this original registration by the reading control unit 4 and encodes the image data of the read original document by the read encoding unit 3 using the MMR system which is the above-mentioned storage-only encoding system. And stores it in the image memory of the image memory management unit 13,
A file number is assigned to the transmission file, and the assigned file number and the image memory number, which is the management number of the transmission file in the image memory management unit 13, are assigned to the file management unit 1.
0 and the one-touch number which is the transmission destination of the transmission file is notified, and the file management information of the file management unit 10 indicates, for example, the file number “0004”. "Register as".

In each registration process, the system control unit 2 also notifies the image memory management unit 13 of the encoding method of the transmission file, and the image memory management unit 13 notifies the image memory management unit 13 of the image of the image memory management unit 13. As memory management information, FIG.
As shown in, along with the image memory number and page number,
Register the encoding method.

Therefore, when the JBIG method is specified as the high compression encoding method when the transmission file is stored, the JBIG method is specified as the encoding method when the transmission file is transmitted in the file management information for managing the transmission file. It is possible to register "present" indicating that "is present" or "absent" indicating that the JBIG method is not specified in the JBIG specification information, and to specify the JBIG method, which is a high compression encoding method, for each transmission file. it can.

As described above, when the JBIG method is specified for each file, in order to create a broadcast transmission file for transmitting the same file to a plurality of destinations, the JBIG for each destination is to be created.
F cannot specify the method. Therefore, when the destinations to be transmitted by the JBIG system and the destinations to be transmitted by the normal encoding system are mixed in the broadcast transmission destination, the transmission file is created without designating the JBIG system as the broadcast transmission file. . In this case, the file management information includes, for example, as shown in the file number “0002” in FIG.
As the file type, "broadcast transmission", "none" as the JBIG designation, "one touch 2, one touch 3" as the transmission destination, and "00" as the image memory number
02 ”is registered.

Next, the case where the JBIG method is designated and registered for each destination will be described with reference to FIG. The designation of the JBIG method for each destination is the designation of the JBIG method when performing the one-touch registration of the destination.
Depending on whether or not a BIG encoding / decoding unit is provided, the key operation of the operation unit 7 is performed to enter the one-touch registration mode, and the telephone number of the destination is displayed according to the display content of the display of the operation unit 7, The registration operation is performed by operating the one-touch number and whether or not the JBIG method is designated.

When the address registration instruction is given by the key operation of the operation unit 7 (step S11), the system control unit 2 shifts to the address registration mode and checks whether the JBIG method is designated (step S12).

When the JBIG method is designated in step S12, the system control unit 2 performs JBIG designation registration and ends the processing (step S13). The system control unit 2 notifies the destination management unit 11 of the JBIG designation registration, together with the destination number and the one-touch number input from the operation unit 7, to the destination management unit 11, and notifies the destination management unit 11 of the information. As shown in FIG. 4, the destination management unit 11
For example, the one-touch number 1, the destination number, and the JBIG designation “present” information is registered in the destination management information of 1.

If the JBIG method is not designated in step S12, the system control unit 2 performs normal registration and ends the processing (step S14). The system control unit 2
This normal registration is notified to the destination management unit 11 of information indicating that the JBIG method is not specified together with the destination number and the one-touch number input from the operation unit 7, and the destination management unit 11 is notified as shown in FIG. In the destination management information of the destination management unit 11,
For example, it is performed by registering the information of the one-touch number 1, the destination number, and the JBIG designation “none”.

Therefore, when the JBIG method is specified as the high compression encoding method when the destination is registered, the JBIG method is used as the encoding method when transmitting the transmission file to the destination for each destination.
"Yes" or JBI indicating that the IG system has been specified
“None” indicating that the G method is not specified can be registered in the JBIG specification information of the destination management information, and the JBIG method, which is a high compression encoding method, can be specified for each destination. As a result, the designation of the JBIG system can be set according to the function of the destination facsimile machine, and the JBIG system, which is a high compression encoding system, can be used effectively and appropriately.

Next, the encoding / decoding resource management process during transmission will be described with reference to FIG. When the system control unit 2 determines that it is time to start the transmission file of the image memory management unit 13 (step S21), the transmission file specifies the JBIG method on a file-by-file basis from the file management information of the file management unit 10. Whether or not it is checked (step S22). System control unit 2
In step S22, the transmission file is, for example, as shown in FIG.
If the file number is “0001” and the JBIG designation is “present”, the resource management unit 9 checks whether the JBIG encoding / decoding unit of the communication encoding / decoding unit 8 is free (step S23). ). In the system control unit 2, since the communication encoding / decoding unit 8 includes only one JBIG encoding / decoding unit, J
The BIG encoding / decoding unit is in use, and the resource management unit 9
When the BIG encoding / decoding unit cannot be acquired, the JBIG encoding / decoding unit waits until it becomes empty (step S23).

In step S23, when the JBIG encoding / decoding unit becomes free, the system control unit 2 causes the resource management unit 9 to use the normal encoding / decoding unit of the communication encoding / decoding unit 8 and the JBI.
The G encoding / decoding unit is acquired, the communication control unit 12 is called (step S24), the destination management information of the destination management unit 11 is checked, and the JBIG designation “present” is set for the destination. Depending on whether or not there is a JBIG receiving function, it is checked (step S25).

In step S25, the transmission destination is JBI.
When it has a G reception function, the system control unit 2
Performs JBIG code transmission (step S26). That is, the system control unit 2 uses the normal encoding / decoding unit of the acquired communication encoding / decoding unit 8 as the image memory management unit 1
After decoding the image data of the transmission file coded by the MMR system transferred from No. 3, and by the JBIG coding / decoding unit of the communication coding / decoding unit 8 by the JBIG system, It is transmitted to the destination via the communication control unit 12.

When the transmission of the image data of all pages of the transmission file is completed, the system control unit 2 causes the resource management unit 9 to perform the normal encoding / decoding unit and the JBIG encoding of the communication encoding / decoding unit 8. -The decryption unit is opened, and the process ends (step S27).

In step S25, when the transmission destination does not have the JBIG receiving function, the resource managing unit 9 causes the normal encoding / decoding unit and the JBIG encoding of the acquired communication encoding / decoding unit 8 to be performed. After opening the JBIG encoding / decoding unit of the decoding unit (step S28), the normal encoding / decoding unit is used to perform transmission by normal encoding (step S29), and the transmission file is stored. When the transmission of the image data of all pages is completed, the resource management unit 9 opens the normal encoding / decoding unit of the communication encoding / decoding unit 8 and ends the process (step S30).

When the transmission file is not designated as JBIG in step S22, the system control unit 2 checks whether or not the transmission destination is designated as JBIG based on the destination management information of the destination management unit 11 ( Step S31).

For example, the transmission file is "000 in FIG.
2 ”, the JBIG designation is“ none ”, and“ one-touch 2 ”and“ one-touch 3 ”are registered as the transmission destinations, as shown in FIG.
"One-touch 2" destination is JBIG designation "Yes"
Then, if the JBIG designation is “none” for the destination of “one-touch 3”, encoding processing is performed according to the presence / absence of JBIG designation by the destination and transmission is performed.

That is, for example, when the transmission destination is "one-touch 2" and JBIG is designated, the system controller 2 determines in step S31 that the transmission destination is JBIG, and proceeds to step S23. Then, the same processing as described above is performed, and the transmission processing by the JBIG encoding method is performed (steps S23 to S27).

In step S31, for example, when the transmission destination is "one-touch 3" and JBIG is not specified, the system control unit 2 determines whether the transmission image data includes JBIG code data. It is determined based on the image memory management information (step S32).

That is, for example, the transmission file is as shown in FIG.
In the case of the memory transfer file shown in (1), the memory transfer file is designated after the received image data is temporarily stored in the image memory of the image memory management unit 13 with, for example, an image memory number of “0004” added thereto. The file management information such as the file number “0004” in FIG. 3 is automatically created in the file management unit 10 at this time.
Although the designation is “none”, the image memory management information of the image memory management unit 13 includes the image memory management information of the transfer file together with the number of pages, as shown in FIG. 5 as the image memory number “0004”. The encoding method of the image data is registered as, for example, "MMR + JBIG".

Therefore, the system controller 2 proceeds to step S
At 32, it is checked whether or not there is JBIG encoded data in the transmitted image data depending on whether the JBIG system is registered as the encoding system of the transmission file from the image memory management information of the image memory management unit 13 (step S32).
If there is JBIG encoded data, the process proceeds to step S23, and similarly to the above, the transmission processing by the JBIG encoding method is performed (steps S23 to S27).

In step S32, JB is added to the transmission image data.
When there is no IG encoded data, the system control unit 2
Causes the resource management unit 9 to acquire the normal encoding / decoding unit of the communication encoding / decoding unit 8 and then causes the communication control unit 12 to make a call (step S33). At this time, the communication encoding / decoding unit 8 now has two (multiple) normal encoding / decoding units, and the communication control unit 12 can simultaneously perform two-line (multiplex) facsimile communication. Since it is possible, a normal encoding / decoding unit of the communication encoding / decoding unit 8 is used unless there is a restriction on the use of the communication control unit 12 such that the communication control unit 12 is performing a reception process. Then, the call control operation by the communication control unit 12 can be performed.

When the call origination operation is started and the other party responds, the system control unit 2 encodes the image data of the transmission file in the normal encoding / decoding unit of the communication encoding / decoding unit 8. After that, the normal encoding / decoding section transmission to be transmitted via the communication control section 12 is started (step S29), and when the transmission of the image data is completed, the resource management section 9 is subjected to communication encoding / decoding. The normal encoding / decoding section of the section 8 is opened, and the process is terminated (step S30).

As described above, according to the present embodiment, when the number of JBIG encoding / decoding units which are high compression encoding / decoding resources is smaller than the number of multiple facsimile communication processing capabilities, that is, While the communication control unit 12 has a two-line simultaneous facsimile communication capability, in the case where the communication encoding / decoding unit 8 includes one JBIG encoding / decoding unit, in units of files. , Only when needed,
The JBIG encoding / decoding unit can be acquired and the image data encoded by the JBIG encoding method can be transmitted, the JBIG encoding / decoding unit can be effectively used, and the data amount of the transmission file can be increased. Can be efficiently reduced, and the communication cost can be effectively reduced.

The JBIG designation is performed for each destination, and the communication encoding / decoding unit 8 is used only when necessary, for example, when the destination facsimile machine has the JBIG receiving function according to the transmission destination. The encoding / decoding part of JB
Image data encoded by the IG encoding method can be transmitted, the JBIG encoding / decoding unit can be effectively used, and the data amount of the transmission file can be efficiently reduced to reduce communication cost. Can be reduced.

Further, JB of the communication encoding / decoding unit 8
Even if the IG encoding / decoding unit is acquired, if the destination facsimile machine does not have the JBIG receiving function, after opening the acquired JBIG encoding / decoding unit,
Since the data is encoded by the normal encoding method and then transmitted, JBIG
The JBIG encoding / decoding unit is acquired for another transmission file waiting for the encoding / decoding unit to become available
It is possible to perform transmission by the IG encoding method, and
It is possible to make more effective use of the encoding / decoding unit, and it is possible to transmit image data of an appropriate encoding method to a destination.

Further, when a page of image data according to a normal encoding method and image data according to the JBIG method are mixed in one transmission file, or a transfer file, it is a file that is not designated by JBIG in file units. However, if a page of JBIG image data exists, the JBIG encoding / decoding unit can be acquired prior to the transmission of the image data, and the image can be encoded by the JBIG method and transmitted. You can Therefore, J
Image data of a transfer file encoded by the BIG system can be encoded by the JBIG system and transferred.
The G encoding / decoding unit can be effectively used, the data amount of the transmission file can be efficiently reduced, and the communication cost can be effectively reduced.

9 to 15 are views showing another embodiment of the facsimile apparatus according to the present invention.
It determines whether or not to perform the encoding using the high compression encoding / decoding unit depending on whether the high compression encoding / decoding unit can be acquired at the time of transmitting the transmission file, and corresponds to claim 4. Is.

The present embodiment is applied to the same facsimile machine as that of the above-mentioned one embodiment, and in the explanation of this embodiment, the same components as those of the above-mentioned one embodiment are the same. And the detailed description thereof will be omitted.

In FIG. 9, the facsimile device 20 is
Similar to the above-described embodiment, the system control unit 2, the read encoding unit 3, the read control unit 4, the recording decoding unit 5, the recording control unit 6, the operation unit 7, the communication encoding / decoding unit 8, The resource management unit 9, the file management unit 10, the destination management unit 11, the communication control unit 12, the image memory management unit 13, and the like are provided, and the specific coding resource automatic acquisition determination unit 21 is provided.

In the facsimile apparatus 20 of this embodiment, the JBI is used when storing transmission files and when registering destinations.
At the time of transmission without specifying G, the receiving function type of the transmission destination, that is, whether it is G3 or G4, the image data information of the transmission file, that is, the size of the transmission file (for example, A3, A4, B3, B4, etc.), whether a halftone image is included, etc., and JBIG of the communication encoding / decoding unit 8.
JBIG depends on whether the encoding / decoding part can be acquired.
Determines whether to encode and transmit the scheme.

Therefore, as in the case of the above embodiment, the resource management unit 9 is composed of the resource type, the vacant information, and the communication type of the communication encoding / decoding unit 8 as shown in FIG. The communication resource management information is stored, and two normal coding / decoding units of the communication coding / decoding unit 8 and one JBI are stored.
It manages allocation and release of the G encoding / decoding unit,
As shown in FIG. 11, the file management information of the file management unit 10 includes only the file number, the file type, the transmission destination, and the image memory number, and does not include the JBIG designation information. Also, unlike the case of the above-described embodiment, the destination management unit 11 is configured by a destination type indicating one-touch numbers, destination numbers, and the receiving function of the destinations such as G3 and G4 as shown in FIG. It is provided with registered destination management information and manages registration and citation of each transmission destination. Further, unlike the case of the above embodiment, the image memory management unit 13 includes image memory management information including an image memory number, a page number, and page information, as shown in FIG.
The page information includes, for each file in the image memory, the encoding method of each page of the file, the type of image data such as normal binary image data or intermediate super image data, A4, B4. Page size and DTL, SF
Various types of information such as the read line density of the above are stored.

The specific coding resource automatic acquisition determining unit (judgment means) 21 determines whether or not the JBIG encoding / decoding unit 8 of the communication encoding / decoding unit 8 can automatically acquire the system. Of the JBIG encoding / decoding unit based on the communication resource management information of the resource management unit 9, and outputs the determination result to the system control unit 2. .

Next, the operation of this embodiment will be described. Now, as shown in FIG. 12, it is assumed that the destination of the facsimile apparatus having the G3 function is registered in the one-touch 1 and the destination of the G4 function is already registered in the one-touch 2. File number “00” shown in 11
Send file of 01 "to destination of one-touch 1 and send file of file number" 0002 "to one-touch 2
It is assumed that they are created for each of the destinations. Then, assuming that the original reading mode of the transmission file “0001” is the normal binary image mode and there are two pages of A4 and B4, the image memory management information of the image memory management unit 13 includes: As shown in FIG. 13, the image memory number "000
For “1”, the number of pages is “2”, and the page information is stored for each page. In addition, the transmission file "0
002 ”, the original reading mode is the halftone mode only for the first page, the normal binary image mode for the second to fourth pages, and the original size and the reading linear density are A4 for the first page, DTL (200 x 200 dpi, round 8
× 3.851l / mm) The second page is B4, DT
L3, the third page is A4, SF (400 × 400 dpi)
Or 16 × 15.4 l / mm), the fourth page is A
4, the image memory management information of the image memory management unit 13 shows that the number of pages is “4” with respect to the image memory number “0002”, and each page is described above. Page information is stored.

When the storage of the transmission file is completed in this way, the system control unit 2 determines whether to activate the transmission file and performs the resource management process shown in FIGS. 14 to 16.

That is, as shown in FIG. 14, the system control unit 2 shifts to the activation of the transmission file and starts the JBIG automatic acquisition determination (step P1). The JBI of the communication encoding / decoding unit 8 based on the communication resource management information of the source management unit 9.
It is checked whether the G encoding / decoding unit can be acquired, that is, whether another communication does not use the JBIG encoding / decoding unit and is vacant (step P2). That is, the communication encoding / decoding unit 8 uses the JB
Since only one IG encoder / decoder is provided, J
Waiting for the BIG encoding / decoding unit to become available takes time until transmission, and even if the JBIG encoding / decoding unit compresses at a high compression rate, it takes time to transmit the data. The result is required. Therefore, in step P2,
When the JBIG encoding / decoding unit is not available, the system control unit 2 causes the resource management unit 9 to acquire the normal encoding / decoding unit of the communication encoding / decoding unit 8, and the communication control unit 12 Then, the call transmission operation is started, and the process ends (step P3).

In step P2, when the JBIG encoding / decoding section is empty, the system control section 2 sends the destination management section 11 a G3 transmission destination based on the destination management information.
It is checked whether or not the facsimile device has a function (step P4). When the destination is G3, it is necessary to add the sender information to the image data by the facsimile device 20 on the transmitting side. Thirteen
Since the image data in the image memory is once decoded and then re-encoded and transmitted, if the JBIG encoding / decoding unit is used for this re-encoding, the image is encoded with a high compression rate and the amount of data is small. Data can be sent in a short time. Therefore, in step P4, when the transmission destination is G3, the system control unit 2 causes the resource management unit 9 to include the normal encoding / decoding unit and the JBIG encoding / decoding unit of the communication encoding / decoding unit 8. Then, the communication control section 12 activates the call transmission operation (step P5). That is, when the transmission file is “0001” in FIG. 13, the JBIG encoding / decoding unit is empty, the transmission destination is one-touch 1 and a G3 machine, the normal encoding / decoding unit 8 for communication is used. The transmission operation using the encoding / decoding unit and the JBIG encoding / decoding unit is started.

In step P4, when the transmission destination is not G3, the system controller 2 causes the image memory manager 13
Is checked on the basis of the image memory management information whether the transmitted image data includes halftone image data (step P6). That is, when the destination is G4 or the like, the source information is added on the receiving side, and the facsimile apparatus 20 on the transmitting side needs to specially decode the image data in the image memory and then re-encode it. Except when, the encoded image data in the image memory can be transmitted, and thus the transmission of the image data in the image memory as it is is less burden on the facsimile apparatus 20 on the transmission side.
In addition, the time for transmitting all the image data is often faster than the case of re-encoding with the JBIG method. Therefore, in the facsimile device 20, like a halftone image,
In order to acquire the JBIG encoding / decoding unit only when the amount of data is large and the halftone image can be efficiently compressed by the JBIG method at a high compression rate, the halftone image is transmitted to the transmission image data in step P6. Checking whether image data is included.

In step P6, when the transmitted image data includes halftone image data, the system control unit 2
Moves to step P5, causes the resource management unit 9 to acquire the normal encoding / decoding unit and the JBIG encoding / decoding unit of the communication encoding / decoding unit 8, and the communication control unit 12 issues The call transmission operation is activated (step P5). For example, the transmission file is “0002” in FIG. 13, the JBIG encoding / decoding unit is empty, the transmission destination is one-touch 1 as shown in FIG. 11, and the G4 machine is as shown in FIG. When the transmission image data includes halftone image data, the transmission operation using the normal encoding / decoding unit and the JBIG encoding / decoding unit of the communication encoding / decoding unit 8 is performed. Transition.

In step P6, when the transmission image data does not include the halftone image data, the system control unit 2 causes the resource management unit 9 to include the normal encoding / decoding unit of the communication encoding / decoding unit 8. Is acquired, the call transmission operation by the communication control unit 12 is activated, and the process is terminated (step P3).

As described above, when the normal encoding / decoding section and the JBIG encoding / decoding section are acquired and the call transmission is started, the system control section 2 operates as shown in FIGS. 15 and 16. Then, the JBIG resource management process when the JBIG is acquired is performed.

That is, when the system control unit 2 acquires the normal encoding / decoding unit and the JBIG encoding / decoding unit in step P5 of FIG. 14 and shifts to the call transmission, the destination (destination) Is capable of JBIG communication (step P11), and if the destination is capable of JBIG communication, the destination management unit 11 is caused to check whether or not the transmission destination is the G3 reception function (step P11). P12). In step P12, when the transmission destination is G3, the system control unit 2 causes the communication encoding / decoding unit 8 to use the normal encoding / decoding unit for the image data encoded by the MMR method of the transmission file. To decode the raw data (step P13), add additional information such as the sender name to the image data decoded to the raw data, and perform other necessary image conversion, and then the communication encoding / decoding unit 8 JBI
The G encoding / decoding unit re-encodes by the JBIG method (step P14). The image conversion of the decoded image data is performed by, for example, the image data size of A4 as the destination and D
When the transmission file “0002” in FIG. 13 has the TL reception capability, the second page is B4 and the third page is SF image data, so both are matched with the function of the reception side. To send the image data, D of A4
Although it is necessary to convert the image data into TL image data, in the above image conversion, image conversion into A4 and DTL is performed in such a case.

When the image conversion and JBIG encoding are completed, the system controller 2 transmits the image data of the page via the communication controller 12 (step P1).
5) Then, it is checked whether there is a next page (step P16). If there is a next page in step P16, the system control unit 2 returns to step P13 to decode the encoded image data of the next page in the image memory of the image memory management unit 13 in the same manner as described above. After performing the necessary image conversion, it is encoded by the JBIG method and transmitted (steps P13 to P15).

Then, in step P16, when there is no next page, the system controller 2 terminates the communication (step P17), and the resource manager 9 causes the communication encoder / decoder 8 to perform normal encoding / decoding. The decoding unit and the JBIG encoding / decoding unit are opened, and the process ends (step P1).
8).

Therefore, when the destination is the G3 function, the encoded image data in the image memory is usually once decoded in order to add the additional information such as the sender name in the facsimile device 20 on the transmitting side. Therefore, after the acquired normal encoding / decoding unit performs decoding, additional information is added and necessary image conversion is performed, the JBIG encoding / decoding unit can perform high compression encoding and transmit, It is possible to reduce the communication cost by reducing the data of the transmission image data.

If the transmission destination is not G3 in step P12, the system control unit 2 determines to the image memory management unit 13 whether the image data of the page of the transmission file is halftone image data. (Step P19), the transmission page is in the halftone mode, such as the image data of the first page of the transmission file “0002” in FIG.
After moving to Step P13 and decoding the encoded image data and performing the necessary image conversion in the same manner as described above,
It is encoded by the JBIG method and transmitted (step P13).
~ P15).

If it is determined in step P19 that the image data is not halftone image data, it is determined whether the image data of the page of the transmission file needs to be converted, that is, as described above, for example, the destination is the image data size of A4, DTL
If the page of the transmission file is the B4 image data of the second page of the transmission file “0002” in FIG. 13 or the SF image data of the third page, In order to transmit the image data matching the function of the receiving side, it is necessary to convert the image data into the DTL image data of A4, and it is checked whether such image conversion is necessary (step P20).

When it is determined in step P20 that image conversion is necessary, the system control unit 2 proceeds to step P13 to decode the coded image data and perform the necessary image conversion in the same manner as above. After that, it is encoded by the JBIG method and transmitted (steps P13 to P15).

When it is determined in step P20 that the image conversion is not necessary, the destination is the G4 receiving function. Therefore, the system control unit 2 moves to step P15 and reads the image data read from the image memory of the image memory management unit 13. Is transmitted as it is via the communication control unit 12 (step P1
5) Check whether there is a next page (step P1)
6).

As described above, when the destination has the G4 receiving function instead of the G3 receiving function, the addition of additional information such as the sender name is performed by the facsimile apparatus on the receiving side. Check page by page if the encoded image data in the image memory of needs to be decoded, and only when it needs to be decoded,
That is, the halftone image data is faster when re-encoded by the JBIG method, and only when the communication cost can be reduced or when image conversion is necessary.
After decoding the encoded image data, performing the necessary image conversion, encoding with the JBIG method, transmitting, and when there is no need to encode, the image data in the encoded image memory is Send as is. Therefore, while reducing the data of the transmission image data to reduce the communication cost,
It can be transmitted more quickly and at a lower cost than in the case of decoding and transmitting all the image data.

In step P11, when the destination is not JBIG communicable, the system control unit 2 proceeds to step P21 in FIG. 16 so that the JBIG encoding / decoding unit can be used for other processing. , JBIG of the communication encoding / decoding unit 8 acquired in step P5 of FIG.
The encoding / decoding unit is opened (step P21), and it is checked whether the same image conversion as above is necessary (step P22).

In step P22, when image conversion is necessary, the system control unit 2 decodes the image data of the transmission page into raw data by the normal encoding / decoding unit of the communication encoding / decoding unit 8. (Step P23), after performing necessary image conversion, the normal encoding / decoding unit of the communication encoding / decoding unit 8 performs MH, MR, or M
It is re-encoded by the ordinary MR encoding method (step P2).
4).

Thereafter, the system control unit 2 transmits the re-encoded page image data to the destination via the communication control unit 12 (step P25), and checks whether there is a next page (step P26).

If there is a next page, the system controller 2 returns to step P22, and similarly checks whether or not the image data of the next page of the transmission file requires image conversion (step P22). When image conversion is required, it is decoded into raw data, converted into an image, re-encoded and transmitted to the destination in the same manner as above (step P25).

When it is determined in step P22 that the image conversion is not necessary, the system control unit 2 proceeds to step P25 to leave the image data of the transmission page of the transmission file in the image memory of the image memory management unit 13 as it is. Transmission is performed via the communication control unit 12 (step P25), and it is checked whether there is a next page (step P26).

If there is no next page in step P26, the system controller 2 terminates the communication (step P2).
7) Then, the normal encoding / decoding unit of the communication encoding / decoding unit 8 that has been acquired is released to the resource management unit 9 and the process is terminated (step P28).

As described above, when the other party does not have the JBIG communication function, the JBIG encoding / decoding unit acquired previously is not acquired until the facsimile communication is completed. Since the JBIG encoding / decoding unit can be opened and transmission processing can be performed, JBIG
The encoding / decoding unit can be used effectively and efficiently.

As described above, the invention made by the inventor has been specifically described based on the preferred embodiments. However, the present invention is not limited to the above, and various modifications can be made without departing from the gist of the invention. It goes without saying that it is possible.

In the other embodiments, whether or not image conversion is necessary is determined based on whether or not image size conversion and linear density conversion are necessary. The judgment element of necessity is not limited to these, and for example, the addition of data information to the transmission image data or the necessity of addition may be used as the judgment element.

[0097]

According to the facsimile apparatus of the present invention, the high compression encoding / decoding means for encoding / decoding image data at a high compression rate requires the encoding / decoding process. If the number of operation processes to be performed is less than the number that can be processed at the same time, only when it is instructed to start calling after acquiring the high compression encoding / decoding means in file units, the designation is performed. When sending the sent file,
Since the high-compression encoding / decoding means is acquired, encoded, and then transmitted, a transmission file of image data such as a halftone image is transmitted by a high compression encoding method in file units when the transmission file is created. It is possible to specify, the amount of data can be reduced, and the communication cost can be reduced.

According to the facsimile apparatus of the present invention, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate is an operation requiring the encoding / decoding processing. When the number of processes is less than the number that can be processed at the same time, only when it is instructed to activate the call after acquiring the high compression encoding / decoding means for each transmission destination, the transmission destination When the transmission file is transmitted to, the high compression encoding / decoding means is acquired, encoded, and then transmitted, so that it is possible to effectively use the encoding / decoding resources of the high compression encoding method. Only when sending a transmission file of image data such as halftone images,
It is possible to specify and transmit a high compression encoding method for each file, and it is possible to use the high compression encoding / decoding means effectively and efficiently, reduce the data amount, and reduce the communication cost. Can be reduced.

According to the facsimile apparatus of the third aspect of the present invention, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate is an operation requiring the encoding / decoding processing. The transmission file contains a page encoded by an encoding method that requires encoding / decoding by the high compression encoding / decoding means when the number of processes is less than the number that can be processed simultaneously. Since the calling operation processing is performed after the high compression encoding / decoding means is acquired for all pages of the transmission file, the high compression encoding / decoding means for each transmission file and each destination. Even if the acquisition of the high compression encoding / decoding means cannot be instructed like a transfer file even if the acquisition of the high compression encoding / decoding means is not performed, the file requiring the high compression encoding / decoding means is In contrast, high compression encoding / decoding Won stage can be transmitted, it is possible to properly encode the image data, by reducing the amount of data, it is possible to reduce the communication cost.

According to the facsimile apparatus of the fourth aspect of the present invention, the high compression encoding / decoding means for encoding / decoding the image data at a high compression rate requires the encoding / decoding process. If the number of processes is less than the number that can be processed at the same time, it is judged whether the high compression encoding / decoding means can be acquired, and if it can be acquired, it is encoded by the high compression encoding method and transmitted. If it cannot be obtained, the data is encoded by the low compression encoding method and transmitted, so that the high compression encoding / decoding means can be efficiently used and the high compression encoding / decoding means is used. The operability of the facsimile machine can be improved.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a facsimile apparatus according to an embodiment of a facsimile apparatus of the present invention.

2 is a diagram showing an example of communication resource management information stored in a resource management unit of FIG. 1. FIG.

3 is a diagram showing an example of file management information stored in a file management unit of FIG. 1. FIG.

4 is a diagram showing an example of destination management information stored in a destination management unit of FIG.

5 is a diagram showing an example of image memory management information stored in the image memory management unit of FIG. 1. FIG.

6 is a flowchart showing a transmission file creation process by the facsimile apparatus of FIG.

7 is a flowchart showing a destination registration process by the facsimile apparatus of FIG.

8 is a flowchart showing an encoding / decoding resource management process by the facsimile apparatus of FIG.

FIG. 9 is a circuit block diagram of a facsimile apparatus according to another embodiment of the facsimile apparatus of the present invention.

10 is a diagram showing an example of communication resource management information stored in the resource management unit of FIG.

FIG. 11 is a diagram showing an example of file management information stored in the file management unit of FIG. 9.

12 is a diagram showing an example of destination management information stored in a destination management unit of FIG.

FIG. 13 is a diagram showing an example of image memory management information stored in the image memory management unit of FIG. 9.

14 is a flowchart showing JBIG resource management processing when the transmission file is started by the facsimile apparatus of FIG.

15 is a flowchart showing a JBIG resource management process at the time of calling after the JBIG resource management process of FIG. 14 is performed.

16 is a flowchart showing a process that follows the JBIG resource management process shown in FIG.

[Explanation of symbols]

 1, 20 Facsimile device 2 System control unit 3 Reading / coding unit 4 Reading control unit 5 Recording decoding unit 6 Recording control unit 7 Operation unit 8 Communication coding / decoding unit 9 Resource management unit 10 File management unit 11 Destination Management unit 12 Communication control unit 13 Image memory management unit 14 Bus 21 Specific coding resource automatic acquisition determination unit

Claims (4)

[Claims] 1. A multiple operation control means capable of simultaneously processing a plurality of operation processes requiring an encoding / decoding process, and the plurality of operation processes for encoding / decoding image data at a predetermined high compression rate. A plurality of high compression encoding / decoding means less than the number of operations, and a plurality of low compression encoding / decoding for encoding / decoding image data at a compression rate lower than that of the high compression encoding / decoding means. A high-compression encoding / decoding means and a low-encoding / decoding means for managing encoding / decoding resources, and a high-compression encoding / decoding means. The designation means for designating to start the call after each transmission file, and the high compression encoding / decoding means by the resource management means according to the designation of the designation means for each transmission file After that, the multiple operation control means makes a call. Facsimile apparatus characterized by and a control means for causing the work process. 2. A multiple operation control means capable of simultaneously processing a plurality of operation processes requiring an encoding / decoding process, and the plurality of operation processes for encoding / decoding image data at a predetermined high compression rate. A plurality of high compression encoding / decoding means less than the number of operations, and a plurality of low compression encoding / decoding for encoding / decoding image data at a compression rate lower than that of the high compression encoding / decoding means. A high-compression encoding / decoding means and a low-encoding / decoding means for managing encoding / decoding resources, and a high-compression encoding / decoding means. The designation means for designating that the call is to be activated after each transmission destination, and the resource management means for obtaining the high compression encoding / decoding means according to the designation of the designation means for each transmission destination. After that, by the multiple operation control means, And control means for causing the call operation process,
A facsimile machine comprising: 3. A multiple operation control means capable of simultaneously processing a plurality of operation processes requiring an encoding / decoding process, and the plurality of operation processes for encoding / decoding image data at a predetermined high compression rate. A plurality of high compression encoding / decoding means less than the number of operations, and a plurality of low compression encoding / decoding for encoding / decoding image data at a compression rate lower than that of the high compression encoding / decoding means. An encoding means, a resource management means for managing encoding / decoding resources composed of the high compression encoding / decoding means and the low encoding / decoding means, and an image storage means for storing image data of a transmission file. If the transmission file stored in the image storage means includes an encoded page that requires encoding / decoding by the high compression encoding / decoding means, all pages of the transmission file are On the other hand, the resource manager After acquiring the high-compression encoding and decoding means, the facsimile machine being characterized in that and a control means for causing the calling operation processing by the multiplex operation control means. 4. A multiple operation control means capable of simultaneously processing a plurality of operation processes requiring an encoding / decoding process, and the plurality of operation processes for encoding / decoding image data at a predetermined high compression rate. A plurality of high-compression encoding / decoding means less than the number of operations, and a plurality of low-compression encoding / decoding for encoding / decoding image data at a compression rate lower than that of the high-compression encoding / decoding means. And a resource managing means for managing the encoding / decoding resources composed of the high compression encoding / decoding means and the low encoding / decoding means, and at the time of starting the multiplex operation control means of the transmission file, The determining means that determines whether the high compression encoding / decoding means can be acquired, and the resource managing means when the determination means determines that the high compression encoding / decoding means can be acquired. High compression encoding / decoding by To win stage, the high compression encoding,
When the decoding means encodes the transmission file and the multiplexing operation control means transmits the transmission file, and when the determining means determines that the high compression encoding / decoding means cannot be acquired, the resource managing means determines Control means for obtaining the low compression encoding / decoding means, encoding the transmission file by the low compression encoding / decoding means, and transmitting by the multiplex operation control means. Facsimile machine.