JP2015089034A - Communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the idle capacity of a storage section at an earlier moment in time, when there are a plurality of transmission data that are transmitted based on the data stored in the storage section.SOLUTION: A communication device includes a transmission section, a storage section, and a control section. The control section performs acquisition processing for acquiring the data, storage processing for storing the data acquired in the acquisition processing, as the acquisition data, in the storage section, transmission processing (S108) for transmitting a plurality of transmission data in such a transmission order that the occupancy of the acquisition data in the storage section becomes smaller at an early moment in time by using the transmission section, when there are a plurality of transmission data that are transmitted to an external device based on the acquisition data stored in the storage section, and deletion processing for deleting the acquisition data in which transmission of the transmission data has been completed in the transmission processing, from the storage section.

Description

  The present invention relates to a technique for transmitting acquired data.

  Conventionally, a FAX apparatus that stores received FAX data in a storage unit and transmits the FAX data to an external apparatus when the stored FAX data satisfies a transmission condition is known (for example, see Patent Document 1). .

JP 2008-148120 A (paragraph 0036)

By the way, there may be a plurality of transmission data to be transmitted based on the data stored in the storage unit. In this case, depending on the transmission order of the plurality of transmission data, it may take time until the transmission is completed and the free space of the storage unit increases.
In this specification, when there are a plurality of transmission data to be transmitted based on the data stored in the storage unit, a technique capable of increasing the free capacity of the storage unit at an earlier time point is disclosed.

  The communication device disclosed in the present specification includes a transmission unit, a storage unit, and a control unit, and the control unit acquires data acquired by the acquisition process and data acquired by the acquisition process as acquisition data. When there are a plurality of transmission data to be transmitted to an external device based on the storage process stored in the storage unit and the acquisition data stored in the storage unit, the transmission unit is used to store the acquired data in the storage unit. A transmission process for transmitting a plurality of the transmission data in a transmission order that decreases at an early point of occupancy, and a deletion process for deleting the acquired data that has been transmitted in the transmission process from the storage unit. Run.

  According to the communication device, when there are a plurality of transmission data to be transmitted to the external device based on the acquired data, the transmission data is transmitted in the transmission order in which the occupancy rate of the acquired data in the storage unit becomes small at an early point. It is possible to increase the free capacity of the storage unit at an earlier time point compared to the case where transmission is performed without considering the above.

  Further, when a plurality of pieces of acquired data are stored in the storage unit, the transmission order may be the order of the transmission data corresponding to the acquired data having a small data size.

  In general, transmission data corresponding to acquisition data having a small data size has a transmission time shorter than transmission data corresponding to acquisition data having a large data size. For this reason, when a plurality of acquired data is stored in the storage unit, transmission data is transmitted in the transmission order that becomes smaller when the occupation rate is early when transmission data corresponding to acquired data with a small data size is transmitted in that order. it can.

  The data may be image data, and the transmission order may be the order of the transmission data corresponding to the acquired data having a small number of bits per pixel.

  In general, acquired data with a small number of bits per pixel has a smaller data size than acquired data with a large number of bits per pixel. For this reason, if transmission is performed in the order of transmission data corresponding to acquisition data having a small number of bits per pixel, there is a high possibility that transmission data can be transmitted in the transmission order corresponding to acquisition data having a small data size.

  Further, the data format of the acquired data includes a plurality of data formats having different data sizes when representing the same data, and the transmission order corresponds to the transmission data corresponding to the acquired data having a data format with a small data size. The order of the transmission data corresponding to the acquired data in a data format having a large data size from data may be used.

  In general, transmission data corresponding to acquired data in a data format having a small data size when representing the same data has a data size larger than transmission data corresponding to acquired data having a data format having a large data size in representing the same data. Is small. For this reason, if transmission data corresponding to acquisition data having a small data size is transmitted in order of transmission data corresponding to acquisition data having a large data size from transmission data corresponding to acquisition data having a data format having a small data size, The possibility of sending in order increases.

  In addition, when the external device that is the transmission destination of the acquired data is an external device that requires data format conversion, the control unit sets the data format of the acquired data according to the external device that is the transmission destination. Performing a conversion process for converting to a format, and transmitting the transmission data corresponding to the acquired data converted in the data format by the conversion process to the external device that needs to convert the data format in the transmission process, The transmission data corresponding to the acquired data that has not undergone data format conversion by the conversion processing may be transmitted to the external device that does not require data format conversion.

  According to the communication device, transmission data corresponding to acquired data in a data format corresponding to the external device can be transmitted.

  Further, in the transmission process, when transmitting the plurality of transmission data having different data sizes to the external device based on the one acquired data, the control unit transmits the transmission data in order from the large data size, After completion of transmission of the first transmission data in the transmission process, before completion of transmission of the last transmission data, a reduction process at completion for reducing the data size of the acquired data may be executed.

  According to the communication device, when transmitting a plurality of transmission data having different data sizes based on one acquired data to the external device, the acquired data is stored in the same data size until transmission of all the transmission data is completed. As compared with the case where the data is stored, the occupation ratio of the acquired data in the storage unit can be reduced at an early point.

  Further, the control unit may execute a failure time reduction process for reducing the data size of the acquired data when transmission of the transmission data fails in the transmission process.

  According to the communication device, when the transmission fails, the data size of the acquired data is reduced, so that the occupation ratio of the acquired data in the storage unit can be reduced.

  Further, the control unit may execute the failure time reduction process when transmission of the transmission data first fails in the transmission process.

  If the data size of the acquired data is reduced every time transmission fails, the data size may become too small if the acquisition data fails multiple times. According to the above communication apparatus, when the transmission fails first, the reduction process at the time of failure is executed, so that the data size can be prevented from becoming too small.

  In addition, the communication device includes a receiving unit, and the control unit receives the data from a transmission source device using the receiving unit in the acquisition process, and before the acquisition process, You may perform the notification process which notifies the data processing capability to the said transmission origin apparatus.

  The acquisition data transmission source apparatus may transmit data in accordance with the data processing capability notified from the data transmission destination apparatus. In this case, when the data processing capability of the communication device itself is notified, transmission data transmitted to the external device is limited by the data processing capability of the communication device. According to the communication device, since the data processing capability of the external device is notified to the transmission source device, it is possible to prevent transmission data transmitted to the external device from being limited by the data processing capability of the communication device.

  Moreover, the communication apparatus disclosed by this specification is provided with the transmission part, the memory | storage part, and the control part, The said control part acquires the data acquired by the acquisition process which acquires data, and the said acquisition process When there are a plurality of transmission data to be transmitted to an external device based on the storage process to be stored in the storage unit as data and the acquisition data stored in the storage unit, the acquisition in the storage unit is performed using the transmission unit A transmission process for transmitting a plurality of the transmission data in a transmission order that decreases at a time when data occupancy is early, and a compression process for compressing the acquired data for which transmission of the transmission data has been completed in the transmission process .

  According to the communication device, it is possible to increase the free capacity of the storage unit at an earlier time point compared to the case where transmission is performed without considering the occupation rate.

  The technology disclosed in this specification can be realized in various modes such as a communication / transfer system, a communication method, a communication program, and a recording medium on which the communication program is recorded.

  According to the communication apparatus, when there are a plurality of transmission data to be transmitted based on the data stored in the storage unit, it is possible to increase the free capacity of the storage unit at an earlier time.

1 is a schematic diagram of a FAX reception / transfer system according to Embodiment 1. FIG. The block diagram which simplifies and shows the electric constitution of a FAX apparatus. FIG. 4 is a schematic diagram for explaining transmission of FAX data. 7 is a flowchart of transfer order determination / transfer processing. The flowchart of a transfer process. 10 is a flowchart of transfer order determination / transfer processing according to the second embodiment. The flowchart of a transfer order determination process. The flowchart of a transfer process. The flowchart of a PDF transfer process. FIG. 10 is a schematic diagram for explaining FAX data transfer according to the fourth embodiment. . 7 is a flowchart of transfer order determination / transfer processing. The flowchart of a transfer process.

<Embodiment 1>
The first embodiment will be described with reference to FIGS.
(1) Overall Configuration of FAX Reception / Transfer System With reference to FIG. 1, the overall configuration of the FAX reception / transfer system 1 according to the first embodiment will be described. The FAX reception / transfer system 1 includes a FAX apparatus 10, one or more external FAX apparatuses 11A to 11M, and one or more cloud servers 12A to 12N. FAX is an abbreviation for facsimile. The FAX apparatus 10 is an example of a communication apparatus. The cloud server 12 is an example of an external device.

  In the following description, when the external FAX apparatuses 11A to 11M are not distinguished from each other, they are simply referred to as the external FAX apparatus 11. The same applies to the cloud servers 12A to 12N.

  The FAX apparatus 10 and the external FAX apparatus 11 are connected to be communicable via the telephone network 2. Further, the FAX apparatus 10 and the cloud server 12 are communicably connected via a communication network 3 such as a LAN (Local Area Network) or the Internet.

  The FAX apparatus 10 is an apparatus that transmits and receives FAX data to and from an external FAX apparatus 11. The FAX apparatus 10 can print the received FAX data or can transfer it to the cloud server 12. FAX data is an example of image data.

  The cloud server 12 is a server that provides a service for storing data. The cloud server 12 is managed by an external service provider, for example. Here, the cloud server 12 according to the first embodiment corresponds to data in the PDF (Portable Document Format) format, and the FAX apparatus 10 converts the FAX data into the PDF format and transfers it.

(2) Electrical Configuration of FAX Apparatus Next, the electrical configuration of the FAX apparatus 10 will be described with reference to FIG. The FAX apparatus 10 includes a control unit 21, a display unit 22, an operation unit 23, an image reading unit 24, a printing unit 25, a line communication unit 26, and a network communication unit 27.

  The control unit 21 includes a CPU 21A, a ROM 21B, a RAM 21C, an ASIC 21D, an EEPROM 21E, and the like. The CPU 21A controls each unit of the FAX apparatus 10 by executing a control program stored in the ROM 21B. The ROM 21B stores a control program executed by the CPU 21A, various data, and the like. The RAM 21C is used as a main storage device for the CPU 21A to execute various processes. The RAM 21C is an example of a storage unit. The EEPROM 21E is a nonvolatile memory that stores various data.

The display unit 22 includes a display device such as a liquid crystal display, a drive circuit that drives the display device, and the like.
The operation unit 23 includes a touch panel that covers the display device, and various other operation buttons. The user can perform various settings and instructions by operating the operation unit 23.

The image reading unit 24 is an ADF (Auto Document Feeder) that transports documents one by one, a light source that irradiates a document transported by the ADF, an image sensor, an optical system that focuses light reflected by the document on the image sensor, and the like And reading image data to generate image data. The generated image data is transmitted to the external FAX apparatus 11 via the line communication unit 26.
The printing unit 25 prints an image represented by FAX data received via the line communication unit 26 on a sheet such as printing paper by an electrophotographic method or an inkjet method.

The line communication unit 26 includes an NCU (Network Control Unit), a modem, a control circuit for controlling these, and the like, and transmits / receives FAX data to / from the external FAX apparatus 11 via the telephone network 2. The line communication unit 26 is an example of a receiving unit.
The network communication unit 27 is hardware for connecting the FAX apparatus 10 to the communication network 3. The network communication unit 27 is an example of a transmission unit.

(3) Transfer of FAX Data When the user of the FAX apparatus 10 operates the operation unit 23 in advance to set the transfer destination cloud server 12 in the FAX apparatus 10, the FAX apparatus 10 receives the FAX data. The FAX data can be transferred to the cloud server 12. In order to facilitate understanding, it is assumed in the first embodiment that only one cloud server 12 can be set in the FAX apparatus 10.

  When the destination cloud server 12 is set, the FAX apparatus 10 receives the FAX data from the external FAX apparatus 11, converts the data format of the received FAX data into the PDF format, and temporarily stores it in the RAM 21C. . In the following description, the FAX data in the PDF format is simply referred to as PDF data. Then, the FAX apparatus 10 transfers the PDF data to the cloud server 12 set as the transfer destination.

  The FAX data received from the external FAX apparatus 11 and the FAX data stored in the RAM 21C in the PDF format are examples of acquired data. That is, the data format of the FAX data is different when it is received from the external FAX apparatus 11 and when it is stored in the RAM 21C, but in this embodiment, the data format is referred to as acquired data without distinction. The PDF data when transferred to the cloud server 12 is an example of transmission data. That is, in the first embodiment, the acquired data and the transmission data are the same single data, and are simply changed. Therefore, in the first embodiment, the acquired data and the transmission data correspond one-to-one.

(4) Data processing capability In general, in the transmission / reception of FAX data, negotiation is first performed between a FAX device that is a transmission source of FAX data and a FAX device that is a transmission destination. In this negotiation, the transmission destination FAX apparatus notifies its data processing capability to the transmission FAX apparatus. The data processing capability includes the availability of color support and the maximum resolution.

  The transmission source FAX apparatus transmits FAX data corresponding to the data processing capability received from the transmission destination FAX apparatus to the transmission destination FAX apparatus. For example, it is assumed that FAX data to be transmitted is color. It is assumed that the destination FAX apparatus does not support color. In this case, the transmission source FAX apparatus converts the FAX data to be transmitted into monochrome and transmits it. The same applies to the highest resolution.

  Here, in general, monochrome FAX data is expressed by 1 bit or 8 bits for one pixel, and color FAX data is 24 bits in total, each of which is 8 bits each for R (red), G (green), and B (blue). It is expressed by That is, monochrome FAX data is data having a smaller number of bits per pixel than color FAX data.

  Incidentally, in general, the cloud server 12 can store data regardless of whether it is color or monochrome. For example, it is assumed that the FAX apparatus 10 itself does not support color. In this case, if the FAX apparatus 10 notifies the transmission source FAX apparatus 11 that color is not supported, monochrome FAX data is transmitted from the transmission source FAX apparatus 11 to the FAX apparatus 10. For this reason, the monochrome PDF data is transferred to the cloud server 12 even though the cloud server 12 can store the color PDF data. In other words, the PDF data transferred to the cloud server 12 is limited by the data processing capability of the FAX apparatus 10.

  Therefore, when the destination cloud server 12 is set, the FAX apparatus 10 notifies the data processing capacity of the cloud server 12 instead of its own data processing capacity to the transmission source FAX apparatus 11. Specifically, the FAX apparatus 10 regards the cloud server 12 as the FAX apparatus having the highest data processing capability that the FAX apparatus can have. For example, it is assumed that the highest resolution that can be transmitted and received as FAX data is 1200 dpi. In this case, the FAX apparatus 10 considers that the cloud server 12 is compatible with color and is a FAX apparatus with a maximum resolution of 1200 dpi, and transmits that it is compatible with color and that the maximum resolution is 1200 dpi. The original FAX apparatus 11 is notified.

(5) Re-transfer of PDF data that failed to transfer Next, re-transfer of PDF data that failed to transfer will be described with reference to FIG. As described above, when the destination cloud server 12 is set, the FAX apparatus 10 transfers PDF data to the cloud server 12. However, this transfer may fail. The reason for the failure of the transfer is that the destination cloud server 12 is down, the free capacity of the storage unit included in the cloud server 12 is insufficient, or a failure has occurred in the communication network 3.

  If the transfer of the PDF data fails, the FAX apparatus 10 keeps the PDF data stored in the RAM 21C. In FIG. 3, PDF data A to D indicate the PDF data stored in the RAM 21C after the transfer has failed. Then, when the FAX apparatus 10 subsequently receives new FAX data from the external FAX apparatus 11, the FAX apparatus 10 retransfers the PDF data.

  By the way, when the number of PDF data that has failed to transfer increases, the free space of the RAM 21C decreases due to the storage of the PDF data, and even if new FAX data is received, there is a possibility that it cannot be stored in the RAM 21C.

  Since it is not known when new FAX data is transmitted, it is desirable that the free capacity of the RAM 21C be increased at an early point. In other words, it is desirable to reduce the occupation ratio of PDF data in the RAM 21C at an early point. Here, the occupation ratio of PDF data in the RAM 21C refers to the ratio of the total value of the data sizes of all the PDF data in the total storage capacity of the RAM 21C.

  Therefore, when a plurality of PDF data is stored in the RAM 21C when new FAX data is received, the FAX apparatus 10 has a relatively early occupancy rate of the PDF data in the RAM 21C in a plurality of transfer orders. Transfer in ascending order of transfer. More specifically, the FAX apparatus 10 transfers PDF data in order of small data size.

  Here, the PDF data includes PDF data A to D stored in the RAM 21C due to failure of transfer, and PDF data E converted from newly received FAX data. The case where a plurality of PDF data is stored in the RAM 21C is an example in which there are a plurality of transmission data to be transmitted based on the acquired data.

  The reason for transferring the PDF data in the order of the smaller data size is that the PDF data with the smaller data size is transferred earlier than the PDF data with the larger data size. This is because the free space increases at an early point in time compared with PDF data having a large data size. That is, the occupation ratio of PDF data in the RAM 21C becomes small at an early point.

  Here, in order to simplify the processing, the FAX apparatus 10 according to the first embodiment does not determine from the actual data size when determining the size of the PDF data stored in the RAM 21C. Judged from the attribute of PDF data. Specifically, in general, PDF data representing a monochrome image tends to be smaller in data size than PDF data representing a color image. Therefore, the FAX apparatus 10 considers that the data size of monochrome PDF data is smaller than the data size of color PDF data, and transfers monochrome PDF data and color PDF data in this order.

(6) FAX Data Transfer Order Determination / Transfer Processing Next, PDF data transfer order determination / transfer processing executed by the CPU 21A will be described with reference to FIG. This process is started when there is a FAX incoming call from the external FAX apparatus 11 to the FAX apparatus 10. Here, the description will be made on the assumption that one destination cloud server 12 is set in the FAX apparatus 10.

  In S <b> 101, the CPU 21 </ b> A determines the data processing capability to be notified to the transmission source FAX apparatus 11. Specifically, the CPU 21 </ b> A determines the data processing capability of the cloud server 12 as the data processing capability for notifying the external FAX apparatus 11.

  In S <b> 102, the CPU 21 </ b> A notifies the transmission FAX apparatus 11 of the data processing capability determined in S <b> 101 using the line communication unit 26. S102 is an example of a notification process.

In S <b> 103, the CPU 21 </ b> A uses the line communication unit 26 to receive FAX data from the transmission FAX apparatus 11. S103 is an example of an acquisition process.
In S104, the CPU 21A stores the FAX data received in S103 in the RAM 21C. S104 is an example of a storage process.

  In S105, the CPU 21A converts the data format of the FAX data stored in the RAM 21C in S104 into the PDF format. S105 is an example of a conversion process.

  In S106, the CPU 21A determines whether or not a plurality of PDF data is stored in the RAM 21C. If a plurality of PDF data is stored (S106: Yes), the process proceeds to S107, and the stored PDF data is one. If there is only one (S106: No), S107 is skipped and the process proceeds to S108. Here, since the FAX data is converted into the PDF format in S105, at least one PDF data is stored in the RAM 21C at the time of S106.

In S107, the CPU 21A determines the transfer order so that monochrome PDF data and color PDF data are transferred in this order. The transfer order is an example of the transmission order.
There may be a case where a plurality of monochrome PDF data and a plurality of color PDF data are stored in the RAM 21C. In this case, the transfer order is determined so that, for example, monochrome PDF data and color PDF data are transferred in the order received, and monochrome PDF data are transferred in the order received. May be. It should be noted that the transfer order may be determined so that the actual data size is transferred between monochrome PDF data, and similarly, the transfer is performed between color PDF data in the order of smaller actual data size.

  In S108, the CPU 21A executes a transfer process. The transfer process is a process for transferring PDF data in the transfer order determined in S107. Details of the transfer process will be described later. The transfer process is an example of a transmission process.

(7) Transfer Process Next, the transfer process executed in S108 will be described with reference to FIG.

In S201, the CPU 21A sets 1 as an initial value to a counter N that is a variable for counting the number of transferred PDF data.
In S202, the CPU 21A transfers the Nth PDF data in the transfer order.
In S203, the CPU 21A determines whether the transfer in S202 is successful or unsuccessful, and if successful (S203: Yes), the process proceeds to S204, and if unsuccessful (S203: No), the process proceeds to S205.

  In S204, the CPU 21A deletes the Nth PDF data from the RAM 21C. S204 is an example of a deletion process.

In S205, the CPU 21A determines whether or not all PDF data stored in the RAM 21C has been transferred. Specifically, the CPU 21A determines whether or not the value of the counter N matches the number of PDF data stored in the RAM 21C. If they match, the CPU 21A determines that all PDF data has been transferred. When all the PDF data has been transferred (S205: Yes), the CPU 21A ends this processing and returns to the transfer order determination / transfer processing. When there is PDF data that has not been transferred yet (S205: No), the processing proceeds to S206. move on.
In S206, the CPU 21A adds 1 to the counter N and returns to S202.

(8) Effects of the Embodiment According to the FAX apparatus 10 according to the first embodiment described above, when a plurality of PDF data stored in the RAM 21C is transferred, the occupation ratio of the PDF data in the RAM 21C in a plurality of transfer orders is Transfer is performed in a transfer order that becomes smaller at a relatively early time.
When transferring a plurality of PDF data, many transfer orders can be considered depending on the permutation of the plurality of PDF data. Therefore, it is also conceivable to transfer FAX data in the order of data size. However, since it takes time to transfer FAX data having a large data size, it takes time until the transfer of the PDF data is completed and deleted from the RAM 21C after the transfer of the first PDF data is started. For this reason, when new FAX data is received, the possibility that it can be stored in the RAM 21C is reduced.
On the other hand, according to the FAX apparatus 10, since transfer is performed in the transfer order in which the occupation ratio of the PDF data in the RAM 21C becomes small at an early time, there is a high possibility that the time when the occupation ratio becomes small becomes early. For this reason, when a plurality of PDF data to be transmitted is stored in the RAM 21C, it is possible to increase the free capacity of the RAM 21C at an earlier point in time than when transmitting without considering the occupation rate. Thereby, when new FAX data is received, there is a high possibility that it can be stored in the RAM 21C.

  Furthermore, according to the FAX apparatus 10, the transfer order is the order of PDF data with a small data size. In general, data having a small data size has a shorter transfer time than data having a large data size. For this reason, when the PDF data is transferred in the order of the smaller data size, the PDF data can be transferred in the order of transfer that becomes smaller when the occupation rate is early.

Furthermore, according to the FAX apparatus 10, since the transfer order is the order of monochrome PDF data and color PDF data, there is a high possibility that a plurality of PDF data can be transferred in the order of PDF data having a smaller data size.
Furthermore, according to the FAX apparatus 10, before receiving FAX data from the external FAX apparatus 11, the data processing capability of the cloud server 12 is notified to the transmission FAX apparatus 11 (S101, S102). It is possible to prevent the transferred PDF data from being limited by the data processing capability of the FAX apparatus 10.

<Embodiment 2>
Next, Embodiment 2 will be described with reference to FIGS.
In the first embodiment described above, there is one cloud server 12 that can be set as the transfer destination. On the other hand, in the second embodiment, a different cloud server 12 can be set as a transfer destination for each external FAX apparatus 11.

  Specifically, the user can store the EEPROM 21 </ b> E in association with the transfer destination cloud server 12 for each telephone number of the external FAX apparatus 11 by operating the operation unit 23 in advance. When the FAX apparatus 10 receives the FAX data from the external FAX apparatus 11, the FAX apparatus 10 transfers the FAX data to the cloud server 12 associated with the telephone number of the external FAX apparatus 11.

  Here, the data format supported by the cloud server 12 may be different for each cloud server 12. For example, the cloud server 12A may support only the PDF format, and the cloud server 12B may support only the JPEG format. Accordingly, the FAX apparatus 10 according to the second embodiment converts the data format of the received FAX data into a data format corresponding to the destination cloud server 12 and stores it in the RAM 21C.

  By the way, if the data format is different, the data size is different even for the same data. For example, the data size after conversion differs when the same data is converted into the PDF format and when converted into the JPEG format. In general, data in a data format having a small data size when representing the same data tends to have a smaller data size than data having a data format having a large data size in representing the same data.

  Therefore, when the FAX apparatus 10 receives FAX data from the external FAX apparatus 11 and a plurality of FAX data is stored in the RAM 21C, FAX data in a data format with a small data size when representing the same data is used. The data is transferred in the order of FAX data in a data format having a large data size when representing the same data.

  For example, it is assumed that the PDF format has a smaller data size when representing the same data as the JPEG format. In this case, the FAX apparatus 10 transfers in the order of PDF format FAX data and JPEG format FAX data. In the following description, the fax data in PDF format is referred to as PDF data, and the fax data in JPEG format is referred to as JPEG data.

(1) FAX Data Transfer Order Determination / Transfer Processing With reference to FIG. 6, transfer order determination / transfer processing according to the second embodiment will be described. Here, substantially the same processing as the transfer order determination / transfer processing according to the first embodiment is denoted by the same reference numeral, and description thereof is omitted. In addition, here, it is assumed that the cloud server 12 that supports PDF format data and the cloud server 12 that supports JPEG format data are set as transfer destinations.

  In S301, the CPU 21A converts the data format of the received FAX data into a data format supported by the cloud server 12 associated with the telephone number of the FAX apparatus 11 that is the FAX data transmission source. Here, information indicating the data format supported by each cloud server 12 is stored in the EEPROM 21E, and the CPU 21A refers to the information to determine the data format supported by each cloud server 12. Shall be able to.

  In S302, the CPU 21A determines whether or not a plurality of FAX data is stored in the RAM 21C. If a plurality of FAX data is stored (S302: Yes), the process proceeds to S303, and the stored FAX data is one. If there is only one (S302: No), the process skips S303 and proceeds to S304.

In S303, the CPU 21A executes a transfer order determination process. The transfer order determination process is a process for determining the transfer order for each PDF data and JPEG data. Details of the transfer order determination process will be described later.
In S304, the CPU 21A executes the transfer process according to the second embodiment. Details of the transfer process will be described later.

(2) Transfer Order Determination Process Next, the transfer order determination process executed in S303 will be described with reference to FIG.

In S401, the CPU 21A initializes the transfer order list of PDF data. When the transfer order list is initialized, nothing is registered in the transfer order list.
In S402, the CPU 21A initializes the transfer order list of JPEG data.
In S403, the CPU 21A selects one FAX data stored in the RAM 21C. The order of selecting FAX data may be any order.

  In S404, the CPU 21A determines whether or not the data format of the FAX data selected in S403 is the PDF format. If the data format is the PDF format (S404: Yes), the process proceeds to S405, and if it is not the PDF format (S404: No). ), That is, in the case of the JPEG format, the process proceeds to S406.

In S405, the CPU 21A adds the FAX data selected in S403 to the end of the PDF data transfer order list. In addition, after adding all the PDF data to the transfer order list, the transfer order of the PDF data may be rearranged in the order of the actual data size.
In S406, the CPU 21A adds the FAX data selected in S403 to the end of the JPEG data transfer order list. Note that after all the JPEG data has been added to the transfer order list, the transfer order of the JPEG data may be rearranged in the order of decreasing actual data size.

  In S407, the CPU 21A determines whether or not all the FAX data stored in the RAM 21C has been selected. If all the FAX data has been selected (S407: Yes), the process returns to the transfer order determination / transfer processing and is still selected. If there is unfaxed FAX data (S407: No), the process returns to S403 and is repeated.

(3) Transfer Processing Next, transfer processing according to the second embodiment will be described with reference to FIG.
In S501, the CPU 21A determines whether or not PDF data is stored in the RAM 21C. If even one PDF data is stored (S501: Yes), the process proceeds to S502, and if none is stored (S501). : No) proceeds to S506.

In S502, the CPU 21A sets 1 as an initial value in a counter N that is a variable for counting the number of PDF data.
In S503, the CPU 21A executes a PDF transfer process. The PDF transfer process is a process for transferring the N-th transfer data in the PDF data transfer order list. Details of the PDF transfer process will be described later.

In S504, the CPU 21A determines whether or not all PDF data in the PDF data transfer order list has been transferred. If there is PDF data that has not been transferred yet (S504: No), the process proceeds to S505, and all PDF data is transferred. If the data has been transferred (S504: Yes), the process proceeds to S506.
In S505, the CPU 21A adds 1 to the counter N, returns to S503, and repeats the process.

  In S506, the CPU 21A determines whether or not JPEG data is stored in the RAM 21C. If any JPEG data is stored (S506: Yes), the process proceeds to S507, and if none is stored (S506). : No) ends this processing and returns to the transfer order determination / transfer processing.

In S507, the CPU 21A sets 1 as an initial value to a counter N that is a variable for counting the number of JPEG data.
In S508, the CPU 21A executes JPEG transfer processing. The JPEG transfer process is a process of transferring the JPEG data whose transfer order is the Nth in the JPEG data transfer order list.

In S509, the CPU 21A determines whether or not all JPEG data in the JPEG data transfer order list has been transferred. If there is JPEG data that has not been transferred (S509: No), the process proceeds to S510, and all the JPEG data If the data has been transferred (S509: Yes), this process ends and the process returns to the transfer order determination / transfer process.
In S510, the CPU 21A adds 1 to the counter N, returns to S508, and repeats the process.

(4) PDF Transfer Process Next, the PDF transfer process executed in S503 will be described with reference to FIG. Here, processes that are substantially the same as the transfer processes according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In S601, the CPU 21A transfers the Nth-order PDF data in the PDF data transfer order list.
In S602, the CPU 21A determines whether or not the transfer is successful. If the transfer is successful (S602: Yes), the process proceeds to S603. If the transfer is not successful, that is, if the transfer is unsuccessful (S602: No), the process ends. To return to the transfer process.
In S603, the CPU 21A deletes the Nth PDF data in the transfer order from the RAM 21C.

  Since the JPEG transfer process executed in S508 described above is substantially the same as the PDF transfer process except that the PDF data becomes JPEG data, the description thereof will be omitted.

(5) Effects of the Embodiment According to the FAX apparatus 10 according to the second embodiment described above, the transfer order is the order of FAX data of a data format with a large data size from FAX data of a data format with a small data size. If the FAX data is transferred in the order of FAX data having a data size larger than FAX data having a data format having a smaller data size, there is a higher possibility that the data can be transferred in the order of FAX data having a smaller data size.

<Embodiment 3>
Next, Embodiment 3 will be described.
The third embodiment is a modification of the second embodiment. In the second embodiment described above, the cloud server 12 is set as the transfer destination. However, in the third embodiment, the external FAX apparatus 11 can be set as the transfer destination in addition to the cloud server 12. When the transfer destination is the external FAX apparatus 11, the FAX apparatus 10 transfers the received FAX data without converting the data format.

  The cloud server 12 set as the transfer destination is an example of an external device that requires data format conversion. The external FAX apparatus 11 set as a transfer destination is an example of an external apparatus that does not require data format conversion.

  The processing of the FAX apparatus 10 according to the third embodiment is substantially the same as the processing of the FAX apparatus 10 according to the second embodiment except that the data format is not converted when the transfer destination is the external FAX apparatus 11. .

  Here, it is assumed that the FAX data in the PDF format and the FAX data in the JPEG format are data formats having a smaller data size when representing the same data as the FAX data that has not been converted. For this reason, for example, if the cloud server 12 that supports the PDF format and the external FAX device 11 are set as the transfer destination, the FAX device 10 according to the third embodiment has the FAX data in the PDF format and the data format. Transfer is performed in the order of FAX data that has not been converted.

  According to the FAX apparatus 10 according to the third embodiment described above, when the transfer destination is the cloud server 12, the FAX data with the converted data format is transferred, and when the transfer destination is the FAX apparatus 11, the data format is converted. Since FAX data that has not been performed is transferred, FAX data in a data format corresponding to the transfer destination can be transferred.

  Furthermore, according to the FAX apparatus 10, since the FAX data in the data format with the small data size and the FAX data in the data format with the large data size are transferred in this order, the possibility of transfer in the order of the FAX data with the small data size increases. .

<Embodiment 4>
Next, a fourth embodiment will be described with reference to FIGS.
In the first to third embodiments, one FAX data is transferred to one cloud server 12 or one FAX apparatus 11. On the other hand, in the fourth embodiment, one FAX data is transferred to a plurality of external FAX apparatuses 11. Specifically, the user can set the telephone numbers of a plurality of external FAX apparatuses 11 as transfer destinations in the FAX apparatus 10 by operating the operation unit 23 in advance.

  When the FAX apparatus 10 receives FAX data from the external FAX apparatus 11 that is the transmission source, and a plurality of transfer destinations are set, the FAX apparatus 10 transfers the FAX data to the set transfer destinations. That is, in the fourth embodiment, when FAX data is received from the external FAX apparatus 11, a plurality of FAX data are transferred even if there is no FAX data that has failed to be transferred.

  The case where a plurality of transfer destinations are set in the FAX apparatus 10 is an example of a case where there are a plurality of transmission data to be transmitted to the external apparatus based on the acquired data. That is, in this case, a plurality of transmission data corresponds to one acquired data. Further, when the transfer destination is the external FAX apparatus 11, the line communication unit 26 is an example of a transmission unit.

  By the way, when one FAX data is transferred to a plurality of transfer destinations, the data processing capability may differ depending on the transfer destination. For example, it is assumed that two external FAX apparatuses 11 are set as transfer destinations. One FAX apparatus 11 is color-compatible, and the other FAX apparatus 11 is not color-compatible.

  In this case, since the color processing FAX apparatus 11 has the highest data processing capability, the FAX apparatus 10 notifies the transmission FAX apparatus 11 that it is color compatible, and receives color FAX data. Then, the FAX apparatus 10 converts the received color FAX data into monochrome and transfers it to the non-color compatible FAX apparatus 11.

(1) Reduction of FAX Data Data Size When the FAX apparatus 10 according to the fourth embodiment transfers one received FAX data to a plurality of transfer destinations, the data size of the FAX data to be transferred differs depending on the transfer destination. The fax data is transferred in order from the largest data size. Then, the FAX apparatus 10 reduces the data size of the FAX data stored in the RAM 21C after the transfer of the FAX data to be transferred first is completed and before the transfer of the FAX data to be transferred last is started.

  For example, the example shown in FIG. 10 shows a case where one piece of FAX data is transferred to the color compatible FAX apparatuses 11A and 11B and the non-color compatible FAX apparatuses 11C and 11D. In this case, the FAX apparatus 10 transfers color FAX data and monochrome FAX data in this order, as shown in FIG. The FAX apparatus 10 converts the color FAX data stored in the RAM 21C to monochrome before the transfer of monochrome FAX data is started after the transfer of color FAX data is completed. Reduce the data size of.

(2) FAX Data Transfer Order Determination / Transfer Processing With reference to FIG. 11, transfer order determination / transfer processing according to the fourth embodiment will be described. Here, substantially the same processing as the transfer order determination / transfer processing according to the first embodiment is denoted by the same reference numeral, and description thereof is omitted. Here, the description will be made on the assumption that at least one FAX apparatus 11 as a transfer destination is set in the FAX apparatus 10.

  In S701, the CPU 21A determines whether or not a plurality of transfer destinations are set. If a plurality of transfer destinations are set (S701: Yes), the process proceeds to S702, and only one transfer destination is set. (S701: No), skip S702 and proceed to S703.

In step S <b> 702, the CPU 21 </ b> A determines the transfer destination order so that the FAX data is transferred in the order of color FAX data and monochrome FAX data.
Here, it is assumed that information indicating whether or not each FAX apparatus 11 set as a transfer destination is compatible with color is stored in the EEPROM 21E. The CPU 21A can determine whether or not the transfer destination FAX apparatus 11 is color-compatible by referring to the information.
In S703, the CPU 21A executes the transfer process according to the fourth embodiment.

(3) Transfer Process Next, the transfer process executed in S703 will be described with reference to FIG. In order to facilitate understanding, it is assumed here that only one FAX data is stored in the RAM 21C.

In step S801, the CPU 21A sets 1 as an initial value to a counter N that is a variable for counting the number of transfer destinations.
In S802, the CPU 21A transfers the FAX data to the transfer destination whose transfer order is the Nth.

  In S803, the CPU 21A determines whether the transfer in S802 is successful or unsuccessful. If unsuccessful (S803: No), the process proceeds to S804. If successful (S803: Yes), the process proceeds to S806.

  In S804, the CPU 21A determines whether or not the Nth PDF data is the first failure, and if it is the first failure (S804: Yes), the process proceeds to S805, and if it is the second or later failure (S804). : No) skips S805 and proceeds to S806.

  In S805, the CPU 21A reduces the data size of the PDF data by a certain percentage by thinning out the pixels of the image represented by the PDF data. S805 is an example of failure reduction processing.

In S806, the CPU 21A determines whether or not the data has been transferred to all transfer destinations. If there is a transfer destination that has not yet been transferred (S806: No), the process proceeds to S807, and if transfer has been made to all transfer destinations (S806: Yes), the process proceeds to S810.
In S807, the CPU 21A adds 1 to the counter N.

  In S808, the CPU 21A determines whether or not to reduce the data size of the FAX data. Specifically, the CPU 21A determines whether or not the data size of the FAX data transferred to the Nth transfer destination is smaller than the data size of the FAX data transferred to the N−1th transfer destination.

For example, it is assumed that FAX data transferred to the (N-1) th transfer destination is color, and FAX data transferred to the Nth transfer destination is monochrome. In this case, it is determined that the data size of the FAX data transferred to the Nth transfer destination is smaller than the data size of the FAX data transferred to the N−1th transfer destination.
If it is small (S808: Yes), the CPU 21A determines that the data size is to be reduced and proceeds to S809. If not (S808: No), the CPU 21A returns to S802 and repeats the process.

In S809, the CPU 21A reduces the data size of the FAX data by converting the FAX data stored in the RAM 21C to monochrome. S809 is an example of a reduction process upon completion.
In S810, the CPU 21A deletes the last transferred FAX data from the RAM 21C.

(4) Effects of Embodiment According to the FAX apparatus 10 according to Embodiment 4 described above, when transferring one FAX data to a plurality of FAX apparatuses 11, color FAX data and monochrome FAX data are transferred in this order. After the transfer of color FAX data is completed, the color FAX data is converted to monochrome before the transfer of monochrome FAX data is started.
For example, when one FAX data stored in the RAM 21C is transferred to the color compatible FAX apparatus 11 and the non-color compatible FAX apparatus 11, and the one FAX data is color, monochrome FAX data, If the data is transferred in the order of color FAX data, the one FAX data must be stored in the RAM 21C in color until the transfer to all the transfer destinations is completed.
On the other hand, when color FAX data and monochrome FAX data are transferred in this order, when the transfer of color FAX data is completed, the one FAX data is converted to monochrome, so that the occupation ratio of the FAX data in the RAM 21C. Can be reduced early. For this reason, it becomes possible to increase the free capacity of the RAM 21C at an earlier time point.

  Further, according to the FAX apparatus 10, when the FAX data transfer fails, the failure reduction process (S805) for reducing the data size of the FAX data is executed. Therefore, the occupation ratio of the FAX data in the RAM 21C is reduced, and the FAX data is reduced. The possibility of storing data in the RAM 21C can be increased.

  Further, according to the FAX apparatus 10, when the transfer fails for the first time (S804: Yes), the failure reduction process (S805) is executed. If the data size of the PDF data is reduced every time transfer fails, the data size may become too small if the transfer fails several times. According to the FAX apparatus 10, since the reduction process at the time of failure is executed when the transfer fails first, it is possible to prevent the data size from becoming too small.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and the drawings, and for example, the following embodiments are also included in the technical scope.

  (1) In the first embodiment, the order of monochrome FAX data and color FAX data has been described as an example of the transfer order in which the data size is small. In the second and third embodiments, the order of FAX data in a data format with a small data size and the order of FAX data in a data format with a large data size has been described as an example of the transfer order with a small data size. On the other hand, the transfer order may be the order in which the actual data size is small.

(2) In the first embodiment, the cloud server 12 has been described as an example of the transfer destination. On the other hand, the transfer destination may be an external FAX apparatus 11. In that case, it is not necessary to convert the data format of the FAX data. In that case, the network communication unit 27 is an example of a transmission unit.
In the first embodiment, only one transfer destination can be set, but one transfer destination may be set for each external FAX apparatus 11.

  (3) In the fourth embodiment, when the transfer to the transfer destination for transferring the color FAX data is completed, the FAX data is converted to monochrome before the transfer to the transfer destination for transferring the monochrome FAX data is started. As described above, the case where the data size of the FAX data is reduced is described as an example. However, the timing for reducing the data size is not limited to this, and the data size may be reduced at the timing shown below.

For example, assume that there are the following four transfer destinations.
Fax machine 11A-Color compatible, maximum resolution 1200 dpi
Fax machine 11B-Color compatible, maximum resolution 600 dpi
FAX machine 11C: Monochrome compatible, maximum resolution 600 dpi
Fax machine 11D-monochrome compatible, maximum resolution 300 dpi
In this case, when the transfer to the FAX apparatus 11A is completed, the data size is reduced by setting the resolution of the color FAX data to 600 dpi, and when the transfer to the FAX apparatus 11B is completed, the color FAX data is changed to monochrome. The data size may be reduced by conversion, and the data size may be reduced by setting the resolution of the monochrome FAX data to 300 dpi when the transfer to the FAX apparatus 11C is completed.

  (4) In the fourth embodiment, the case where the transfer destination is a FAX apparatus has been described as an example. On the other hand, the transfer destination may be the cloud server 12. For example, it is assumed that each cloud server 12 set as a transfer destination stores PDF data. Each cloud server 12 is set with an upper limit size per data, and the upper limit size is different depending on the cloud server 12.

  In this case, after the PDF data is transferred in the order of the cloud server 12 with the largest upper limit size and the transfer of the PDF data to the one cloud server 12 is completed, the upper limit size of the next cloud server 12 is that of the one cloud server 12 When the size is smaller than the upper limit size, the data size of the PDF data stored in the RAM 21 </ b> C may be reduced according to the upper limit size of the next cloud server 12.

  (5) In the fourth embodiment, the case where one FAX data is transferred to a plurality of external FAX apparatuses 11 has been described as an example. On the other hand, a plurality of FAX data having different data sizes based on one FAX data may be transferred to one external FAX apparatus 11. In that case, the data size of the FAX data stored in the RAM 21C may be reduced each time one piece of FAX data is transferred.

(6) Although the fourth embodiment has been described as an embodiment different from the first to third embodiments, the fourth embodiment can be realized in combination with the first to third embodiments. For example, in the first embodiment, each FAX data may be transferred to a plurality of transfer destinations. In that case, for each FAX data, the FAX data may be transferred in the order of FAX data having a larger data size to FAX data having a smaller data size.
Further, FAX data received from a certain transmission source may be transferred to only one transfer destination, and FAX data received from another transmission source may be transferred to a plurality of transfer destinations. In that case, the FAX data may be transferred in the order of FAX data having the smallest total data size to be transferred. Specifically, for example, consider the following case.

Color data: 5 MB, transfer destination x 1 location = 5 MB
Monochrome data: 1 MB, transfer destination x 8 locations = 8 MB

  In this case, although the color data has a larger data size than the monochrome data, the total data size to be transferred (5 MB) is smaller than the total monochrome data (8 MB). Therefore, the color data may be transferred in this order. This is because if the total size of data to be transferred is small, the transfer is completed earlier, so that the occupation ratio of FAX data in the RAM 21C can be reduced at an early point.

  (7) In the above embodiment, the case where FAX data is received using the line communication unit 26 has been described as an example. On the other hand, FAX data may be received from the external FAX apparatus 11 connected to the communication network 3 via the network communication unit 27. In that case, the network communication unit 27 serves as both a receiving unit and a transmitting unit.

  (8) In the above embodiment, the FAX data received from the external FAX apparatus 11 has been described as an example of the acquired data. However, the acquired data is not limited to this. For example, the acquired data may be image data generated by the image reading unit 24, or document data or image data received from an external personal computer via the network communication unit 27.

  (9) In the above-described embodiment, a case has been described in which, when new FAX data is received from the external FAX apparatus 11, the transfer fails and the FAX data stored in the RAM 21C is retransferred. On the other hand, the retransfer timing is not limited to when new FAX data is received. For example, the FAX apparatus 10 may determine whether or not FAX data that has failed to be transferred is stored in the RAM 21C at regular time intervals such as every 10 minutes, and if it is stored, may be transferred again.

  (10) In the above-described embodiment, a case has been described as an example in which a plurality of FAX data is transmitted in a transmission order in which the occupation ratio of FAX data in the RAM 21C becomes relatively small at a relatively early time among the plurality of transmission orders. On the other hand, a plurality of FAX data may be transmitted in the transmission order in which the occupation ratio of the FAX data in the RAM 21C decreases by a predetermined time. In that case, transmission may be performed in a transmission order that decreases at a time when the occupation ratio is slow until a predetermined time. Specifically, for example, consider the following case.

Predetermined time point ... 1 minute Large-capacity FAX data ... It takes 1 minute and 10 seconds to transmit.
Fax data in capacity ... It takes 50 seconds to send.
Small capacity FAX data: It takes 25 seconds to transmit.

  In this case, the FAX in the RAM 21C can be transmitted in the order of small capacity FAX data, medium capacity FAX data, large capacity FAX data, or medium capacity FAX data, small capacity FAX data, large capacity FAX data. The data occupancy rate becomes smaller by one minute after transmission is started. In this case, transmission may be performed in the order of medium capacity FAX data, small capacity FAX data, and large capacity FAX data. This is because the RAM free capacity greatly increases at 1 minute as compared with the order of the small capacity FAX data, the medium capacity FAX data, and the large capacity FAX data.

  (11) In the first embodiment, the case where PDF data is deleted from the RAM 21C in S204 has been described as an example. On the other hand, instead of deleting the PDF data from the RAM 21C, the PDF data may be stored in the RAM 21C in a state where other data can be overwritten. Further, instead of deleting the PDF data from the RAM 21C, the PDF data may be compressed using a compression algorithm. The same applies to other embodiments.

  (12) In the above embodiment, the FAX apparatus 10 has been described as an example of the communication apparatus. On the other hand, the communication device may be a so-called multifunction device having a printing function, an image reading function, a copy function, a FAX function, and the like.

  (13) In the above embodiment, the case where each process is executed by the CPU 21A has been described as an example. On the other hand, some of these processes may be executed by the ASIC 21D. The control unit 21 may not include the ASIC 21D. In addition, the control unit 21 may include a plurality of CPUs 21A, and the above-described processing may be shared and executed by the plurality of CPUs 21A.

DESCRIPTION OF SYMBOLS 1 ... FAX reception / transfer system, 10 ... FAX apparatus, 11A-11M ... External FAX apparatus, 12A-12N ... Cloud server, 21 ... Control part, 21A ... CPU, 21C ... RAM, 22 ... display unit, 23 ... operation unit, 24 ... image reading unit, 25 ... printing unit, 26 ... line communication unit, 27 ... network communication unit

Claims (10)

A transmission unit;
A storage unit;
A control unit;
With
The controller is
An acquisition process to acquire data;
A storage process for storing the data acquired in the acquisition process in the storage unit as acquired data;
When there are a plurality of transmission data to be transmitted to an external device based on the acquired data stored in the storage unit, the transmission order is used to reduce the occupancy rate of the acquired data in the storage unit at an early point in time. A transmission process for transmitting a plurality of the transmission data in
A deletion process for deleting the acquired data from which the transmission data has been transmitted in the transmission process from the storage unit;
A communication device for executing. The communication device according to claim 1,
When a plurality of pieces of acquired data are stored in the storage unit, the transmission order is the order of the transmission data corresponding to the acquired data having a small data size. The communication device according to claim 2,
The data is image data;
The communication device is a communication device in which the transmission order is the order of the transmission data corresponding to the acquired data having a small number of bits per pixel. The communication device according to claim 2,
The data format of the acquired data includes a plurality of data formats having different data sizes when representing the same data,
The communication device, wherein the transmission order is an order of the transmission data corresponding to the acquisition data having a data format having a large data size from the transmission data corresponding to the acquisition data having a data format having a small data size. The communication device according to claim 4,
The controller is
A conversion process for converting the data format of the acquired data into a data format corresponding to the external device of the transmission destination when the external device of the transmission destination of the acquisition data is an external device that requires data format conversion; Run,
In the transmission process, the external device that needs to convert the data format is transmitted to the external device that corresponds to the acquired data whose data format has been converted by the conversion process, and the external device that does not require a data format conversion A communication apparatus that transmits the transmission data corresponding to the acquired data that has not undergone data format conversion by the conversion process to the apparatus. The communication device according to any one of claims 1 to 5,
The controller is
In the transmission process, when transmitting a plurality of the transmission data having different data sizes to the external device based on the one acquired data, the transmission data is transmitted in order from the large data size,
A communication apparatus that executes a reduction process upon completion for reducing the data size of the acquired data before the transmission of the last transmission data is started after the transmission of the first transmission data is completed in the transmission process. The communication device according to claim 6,
The communication unit is a communication device that executes a failure time reduction process for reducing the data size of the acquired data when transmission of the transmission data fails in the transmission process. The communication device according to claim 7,
The said control part is a communication apparatus which performs the said reduction process at the time of transmission when transmission of the said transmission data fails by the said transmission process first. The communication device according to any one of claims 1 to 8,
With a receiver
The controller is
In the acquisition process, the receiving unit is used to receive the data from a transmission source device,
A communication apparatus that executes a notification process of notifying the transmission source apparatus of the data processing capability of the external apparatus before the acquisition process. A transmission unit;
A storage unit;
A control unit;
With
The controller is
An acquisition process to acquire data;
A storage process for storing the data acquired in the acquisition process in the storage unit as acquired data;
When there are a plurality of transmission data to be transmitted to an external device based on the acquired data stored in the storage unit, the transmission order is used to reduce the occupancy rate of the acquired data in the storage unit at an early point in time. A transmission process for transmitting a plurality of the transmission data in
A compression process for compressing the acquired data for which transmission of the transmission data has been completed in the transmission process;
A communication device for executing.

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