JPH0451112B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to stock market conditions, market conditions of various trading products,
This invention relates to improvements to facsimile storage devices that can be applied to information service systems that provide information that changes over time, such as information on real estate sales, etc., and that provides current (latest) information with value. .

[Technical background of the invention]

Conventionally, information service systems such as those described above have been known in which a facsimile storage device is used as a center device and a facsimile device is used as a terminal device.

In such conventional systems, image data is registered and transmitted as follows.
First, a necessary document is set in a facsimile device as a terminal device, and a facsimile transmission is performed to provide image data to the facsimile storage device. The image data is compiled into the required number of original image data in the facsimile storage device, and
Numbered, filed and registered. In order to output the image data thus filed to a facsimile device serving as a terminal device, the following procedure has been used. If the facsimile device is capable of sending the number data of the required image data to the facsimile storage device, from this facsimile device, or in parallel with the facsimile device if the facsimile device does not have the above function. Telephones connected to the public line network and switched to the facsimile device by a switching device send the number data of each required image data to the facsimile storage device. Then, the facsimile storage device receives this and transmits image data corresponding to the number data to the facsimile device according to a predetermined facsimile transmission control procedure. As a result, necessary image data can be recorded from the facsimile device.

[Problems with background technology]

However, with conventional facsimile storage devices, even if a long time has passed since the image data was registered and the image data becomes old and invalid data, the requested image data is sent to the requested facsimile device upon request. was being sent.

This resulted in the image data being treated as new unless the next image data was overwritten by the facsimile device transmitting the image data to the facsimile storage device. In other words, if multiple image data are stored in a file, even if some of the image data is outdated and is no longer valid, all of the image data will be treated as valid image data, so the fax machine that received this image data will Confusion occurs because the device treats all image data as valid or up-to-date.

Further, it is not desirable to keep old and invalid image data in a file forever because it wastes the storage area of an external storage device such as a magnetic disk device.

[Purpose of the invention]

The present invention has been made in view of the drawbacks of the conventional facsimile storage device as described above, and the purpose of the present invention is to provide image data that is effective at that time when providing image data from the facsimile storage device to the facsimile device. It is an object of the present invention to provide a facsimile storage device that can contribute to the preferable operation of an information service system.

[Summary of the invention]

Therefore, in the present invention, in a facsimile storage device that files and stores image data in predetermined units, data management means that manages a management table containing expiration date data for each predetermined unit of file image data; By providing a data transmitting/receiving means for transmitting all or part of the image data stored in the file to the facsimile device, and a control means for controlling the data transmitting/receiving means to transmit only valid image data based on the expiration date data, The purpose has been achieved.

[Embodiments of the invention]

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. In the figure, 1 indicates analysis control means. The analysis control means 1 has an incoming call detection function, receives key data from other facsimile devices and telephones, analyzes the key data and controls each part, and also controls the operation panel part ( For example, it receives data based on the operation of a console/typewriter (described later), analyzes the data, and controls each part. The analysis control means can also determine whether the key data have been input in a predetermined order.
For example, if the phone is a pushphone, "*"
It is sequentially determined whether or not the key data is sent by operating a predetermined numeric key between the key and the "*" key. This analysis control means 1
has a key data memory table in which key data to be sent from a facsimile device or telephone is stored. As a result, analysis control means 1
can analyze whether key data other than the key data in this key data memory table (key data without meaning) has been transmitted. The analysis control means 1 also has a register j. When key data that does not have the above meaning is sent to register j, the key data is sent again from the facsimile device or telephone.
For example, the number of times the key data is transmitted is set so that it can be transmitted up to three times. Furthermore, the analysis control means 1 has a registration/readout key data memory table in which key data indicative of registering or reading out image data of a document is stored. The analysis control means 1 analyzes key data with reference to the registration/read key data memory table, and outputs instructions to each section based on the results. Furthermore, the analysis control means 1 has a timer.

2 indicates data management means. The data management means 2 manages the management table 4 in the external storage device 3 and reads and writes image data based on instruction data output from the analysis control means 1. When managing the management table 4, the data management means 2 manages all the management tables 4.
The control table 4 has a register i used to check whether the data has been managed or not, and the data is checked and necessary data is rewritten for all of the management table 4 according to the instruction data from the analysis control means 1. Also,
The data management means 3 has a timer as well as a pointer _P1 in which an address for searching a corresponding management table from the management number data of the image data is stored. The external storage device 3 has an area where the management table 4 is stored and an area where image data is stored. The management table 4 is provided for each set of image data when the necessary amount of image data is filed as a set.

FIG. 2 shows a management table provided corresponding to each image data. In this management table, the record management flag in the first column is for indicating whether or not the image data stored corresponding to this management table is still valid. The terminal registration number data in the second column is the registration number data of the facsimile device that sent the image data, the terminal ID data in the third column is the ID data of the facsimile device, and the fourth column is the registration number data of the facsimile device that sent the image data. The terminal name data in the column is the name data of the facsimile device. The document serial number data in the fifth column is the serial number data of the transmitted document on the facsimile device side and the serial number data of the received document on the facsimile storage device side. 6th
The manuscript input date data in the th column is the year, month, day, hour, and minute data when the manuscript was input (received). The expiration date data in the seventh column is the expiration date data of the image data of the document managed by this management table, and is year, month, day, hour, and minute data. The data on the number of original sheets in the eighth column is the data on the number of original sheets constituting the image data managed by this management table. The storage management data in the ninth column is data for managing image data for each page of the manuscript, and when this is subdivided, it is as shown in FIG. 2. The record management flag data in the first column is for indicating whether the image data of the corresponding one-page original is still valid.
The communication information data in the second column is the same data as the data in the second to seventh columns of the management table for a set of image data described above. Further, the data on the number of used storage blocks in the third column is data on the number of blocks in the area occupied by the image data of the original document and in which the image data is stored. Here, this block refers to one area when the area in which image data is stored is divided into areas of equal capacity as shown in FIG. 1, for example. Furthermore, the document size data in the fourth column indicates that the document is, for example, No. 4 in column A or No. 4 in column B.
This is data indicating that the number, etc. The storage block number data in the fifth column is the number data or address data of the first block in which the image data of the original is stored.

The explanation will be given by returning to FIG. 1 again. 5 is a data transmitting/receiving means. The data transmitting/receiving means 5 includes a response sound generating means 6 for returning a generated response sound to a facsimile device or telephone, and a transmission control means 7 for performing data transmission based on a data transmission control procedure in facsimile transmission. The response sound generation means 6 generates four types of distinguishable response sounds, namely, an incoming call response sound, an acceptance response sound, a rejection response sound, and an error response sound, based on the instruction data given from the analysis control means 1. . When receiving image data, the transmission control means 7 transmits a communication control signal (for example, a DCS signal, a DIS signal, etc.) during a data transmission control procedure.
and image data. At this time, the received communication information data and image data are
is sent from the transmission control means 7 to the analysis control means 1,
Furthermore, it is sent to the data management means 2. Furthermore, when transmitting image data, the transmission control means 7 receives the image data from the data management means 2 via the analysis control means 1 and transmits the same.

Further, 8 indicates journal management means. This journal management means 8 performs aggregation for journal output based on instruction data from the analysis control means 1. This journal management means 8 is equipped with a timer and a pointer _P2 storing an address for searching the management table.
is provided. The journal management means 8 searches the communication information data in the management table ₄ using this pointer P2, aggregates journal information data for one day, for example, and sends it to the analysis control means 1 for journal output. The analysis control means 1 sends this journal information data to a line printer 23, which will be described later, for journal output.

Next, a block diagram of the case where the facsimile storage device configured as described above is applied to an information service system is shown in FIG. 3, and will be explained.

In FIG. 3, 10 indicates a facsimile storage device which is a center device, and 30 indicates a terminal device. The facsimile storage device 10 and the terminal device 30 are connected via a public line network 15. The facsimile storage device 10 includes a CPU (central processing unit) 1
1, a main storage device 18 and a floppy disk device 1 connected to this CPU 11 via a bus 24.
9 and a magnetic disk device 12 which is an external storage device. Further, the facsimile storage device 10 is
It has a multiplexer 20 connected to a bus 24, a key data recognition section 13, and an image data transmission/reception section 14 connected to the multiplexer 20.
Key data recognition section 13 and image data transmission/reception section 14
is connected to the public line network 15 via a line. In addition, the CPU 11 is provided with the following information via the bus 25:
A console typewriter 21, a CRT display device 22, and a line printer 23 are connected.

The CPU 11 uses programs in the main memory 18 to perform some of the functions of the analysis control means 1 shown in FIG.
and the function of the transmission control means 7. The CPU 11 also controls the illustrated floppy disk device 19, console typewriter 21, CRT display device 22, and line printer 23.

The key data recognition section 13 executes part of the functions of the analysis control means 1 and the functions of the response sound generation means 6 in FIG. The image data transmitting/receiving section 14 executes the functions of the data transmitting/receiving means 5 in FIG. 1 except for the function of the response sound generating means 6.

The terminal device 30 consists of a set of a telephone 16 ₁ and a facsimile device 17 ₁ , . . . a set of a telephone 16 _o and a facsimile machine 17 _o . The telephone 16 ₁ is connected to the facsimile device 17 ₁ , . . . the telephone 16 _o is connected to the facsimile device 17 _o , respectively, and connected to the public line network 15 via lines.

The operation of the information service system configured as described above will be explained with reference to the flowcharts shown in FIGS. 4 and 5.

When the operation of this information service system starts, as shown in step 101 in Figure 4, the CPU 1
Step 1 determines whether the information service system is in operation or at the end of operation. For example, it can be determined based on a timer whether or not it is the time for service in this information service system, or whether the service is currently in service or not. do. This judgment (analysis)
In FIG. 1, analysis control means 1 performs this based on a timer. If the result of this judgment is that the office is open, the CPU 11 checks in step 102 whether or not there is an incoming call from the telephones 16 ₁ , . . . , 16 _o . At this time, the CPU 11 controls the multiplexer 20 via the bus 24, and the key data recognition section 13 controls the bus 2 via the multiplexer 20.
4, and the key data recognition unit 13
Wait for the data indicating the incoming call to be output. In FIG. 1, the operation of step 102 is performed by the analysis control means 1 based on the incoming call detection function.

For example, in order to make a call from the telephone 16 ₁ to the facsimile storage device ₁₀ , the operator
When the handset (not shown) is taken off-hook and the required dialing operation is performed, the key data recognition unit 13 receives an incoming call.

When a call is received in this way, the process advances to step 103, and the key data recognition unit 13 sets 0 to register j.
(clear register j). When the key data recognition unit 13 receives an incoming signal from the public line network 15, it sets 0 to its own register j. The operation of step 103 is performed by the analysis control means 1 in FIG.
In order to respond to an incoming call, the key data recognition unit 13
returns an incoming call answer tone. This operation is performed as follows in FIG. After the analysis control means 1 detects an incoming call, it gives instruction data to the response sound generation means 6 to the effect that an incoming call response sound should be returned. As a result, the response tone generating means 6 returns an incoming response tone of a predetermined frequency.

This response tone reaches the telephone set ₆₁ via the public line network 15, and is heard by the operator. After hearing the incoming call response tone, the operator performs key input to receive the information service. Here, the key data to be entered is key data indicating whether to register or read image data, key data of management number data of the management table corresponding to the area where image data is stored, and key data of expiration date data. shall be. The key data from this key input reaches the key data recognition section 13 via the public line network 15. Therefore, the key data recognition unit 13
In step 104, key data is imported. Furthermore, the key data recognition unit 13 determines in step 105 whether the key input value is an appropriate value. Steps 104 and 105 are performed in the following manner in FIG. After importing the key data, the analysis control means 1 determines whether the key data is appropriate by checking whether the key data has been input in a predetermined order and exists in the key data memory table. . If this key input value is appropriate, the process branches to YES in step 105 and proceeds to step 106.

In step 106, the key data recognition unit 13
Based on the key data, it is analyzed whether the type of communication is document registration or document reading. Step 106 is
In FIG. 1, the analysis control means 1 refers to the registration/read key data memory table and performs the analysis. Here, if the type of communication is document registration, the key data recognition unit 1
3, in step 107, returns an acceptance response sound. This step 107 is shown in FIG.
The analysis control means 1 refers to the registration/read key data memory table, analyzes that the data is key data for registering the image data of the manuscript, and instructs the response sound generation means 6 to send back an acceptance response sound. This is executed by outputting instruction data to As a result, the response sound generating means 6 returns an acceptance response sound.

Next, in step 108, the key data recognition unit 13 checks whether expiration date data has been transmitted as key data. The expiration date data indicates the expiration date of registered image data. In FIG. 1, this step 108 is executed by searching the key data memory table based on the key data taken in by the analysis control means 1 and analyzing whether there is expiration date data. If it is analyzed in this step 108 that there is expiry date data, the process branches to YES and goes to step 109.
Proceed to.

In step 109, the CPU 11 receives the expiration date data and management number data from the key data recognition unit 13 via the multiplexer 20 and the bus 24, sets the record management flag in a predetermined management table in the magnetic disk device 12, and Set expiration date data in this management table. In this step 109, in FIG. 1, the data management means 2 receives the management number data and the expiration date data from the analysis control means 1, and
is executed by searching the management table corresponding to the management number data using the pointer _P1 , setting the record management flag of this management table, and setting the expiration date data in this management table.

When step 109 ends or step 108 determines that there is no expiration date data, the CPU
Step 11 advances to step 110 and executes a facsimile transmission control procedure. That is, the CPU 11 controls the multiplexer 20 via the bus 24 so that the image data of the document transmitted from the facsimile device ₁₇₁ can be received from the image data transmitting/receiving section 14, and transmits the image data by facsimile in order to receive the image data. Perform the steps. This step 110 is
In FIG. 1, it is executed as follows. The analysis control means 1 sends to the transmission control means 7 instruction data instructing execution of a transmission control procedure. As a result, the transmission control means 7 controls the facsimile device 1
7 Perform data communication with ₁ . At this time, communication information data such as terminal registration number data, terminal ID data, terminal name data, and document serial number data are transmitted from the facsimile device ₁₇₁ by, for example, a DCS signal (a signal indicating a standard function device). The transmission control means 7 analyzes these data and sends them to the control means 1.
Send to. The analysis control means 1 sends this to the data management means 2. The data management means 2 sets the above data in the management table in which the record management flag was set in step 109. Further, when image data of a document is transmitted from the facsimile device 17 ₁ , the transmission control means 7 sends this image data to the data management means 2 via the analysis control means 1 . The data management means 2 searches for an empty block in the area for storing image data in the external storage device 3, stores the image data in this empty block, and also stores the original in the management table for which the record management flag has been set in step 109. Set the required data in the management table for each page.

In this way, the image data of one or more original documents is transmitted from the facsimile device ₁₇₁ , and when the transmission of all image data is completed, the management table is completed and the image data is transferred to the external storage device 3 (magnetic storage device 12). ). Therefore, CPU11
Proceeding to step 111, the image data transmitting/receiving section 14 is controlled via the bus 24 and multiplexer 20, and the line is disconnected. Furthermore, the CPU 11 controls the multiplexer 20 so that the bus 24 is connected to the key data recognition unit 13 via the multiplexer 20. In FIG. 1, this step 111 is executed by the transmission control means 7 disconnecting the line and then sending a message to the analysis control means 1 to the effect that the line has been disconnected. Therefore, the analysis control means 1
Start importing data again.

Next, an explanation will be given of the operation when key data for reading image data of a document is input from the telephone ₁₆₁ . The operation of proceeding from step 101 to step 106 is the same as the operation for registering the manuscript described above.
In this operation, the process branches to NO at step 106 and proceeds to step 112. In step 112, the key data recognition unit 13 provides the CPU 11 with data indicating that image data of the document is to be read, and also with management number data corresponding to the image data management table. Therefore, CPU11
searches the record management flag in the management table corresponding to the management number data in the magnetic disk device 12, and checks whether it is set. This step 112 is executed as follows in FIG. Based on the management number data as key data, the analysis control means 1 sends instruction data to the data management means 2 for inquiring whether the record management flag of the management table corresponding to the management number data is set. The data management means 2 refers to the pointer _P1 based on the management number data, searches the corresponding management table,
It is checked whether the record management flag is set or not, and the resulting data is sent to the analysis control means 1.

Here, if the record management flag is set, the process advances to step 113 and the key data recognition unit 1
3 is informed by the CPU 11 that the record management flag is set, and sends back an acceptance response sound. If the record management flag is not set, the process proceeds to step 114, where the key data recognition unit 13 is informed by the CPU 11 that the record management flag is not set, and returns a rejection response sound. These operations in steps 113 and 114 are executed as follows in FIG. The analysis control means 1 receives data indicating whether or not the record management flag is set from the data management means 2, and the analysis control means 1 sends instruction data based on this to the response sound generation means 6. The response sound generating means 6 transmits an acceptance response sound or a rejection response sound according to the instruction data.

When step 113 is completed, the process advances to step 110, where the CPU 11 transmits the image data according to the facsimile transmission control procedure. This step
110 is executed as follows in FIG. The analysis control means 1 sends instruction data to the data management means 2 instructing it to read the image data corresponding to the management number data. The data management means 2 refers to the pointer _P1 to search the management table corresponding to the management number data, refers to the used storage block number data and the storage block information data, and reads out the corresponding image data. Furthermore,
The data management means 2 sends the read image data to the analysis control means 1. Upon receiving this, the analysis control means 1 sends the image data to the transmission control means 7. The transmission control means 7 transmits and receives communication control signals and transmits the above image data according to a predetermined facsimile transmission control procedure. In the above explanation, when the operator of the telephone 16 ₁ hears the reception response tone in steps 107 and 113, the operator turns on the handset of the telephone 16 ₁ , and the facsimile device 17 ₁ is connected to the public line network 15. so that

Next, the operation when the key input value is not an appropriate value will be explained.

If the key input is not performed properly,
Branch to NO at step 105 and proceed to step 115. In step 115, the key data recognition unit 1
3 increments register j by 1 and steps
At 116, it is determined whether the data in register j has become 3 or not. Here, when branching to NO, the key data recognition unit 13, in step 117,
Returns error response sound. The operator of the telephone ₁₆₁ can hear this error response sound and input the key again, and the key data recognition unit 13 takes in this re-entered key data in step 104. If no appropriate key input is made despite three key inputs, the process branches to YES in step 116 and proceeds to step 114, where the key data recognition unit 13 returns a rejection response sound. . Thereafter, in step 111, the line is disconnected. In this way, if an inappropriate key input is made, re-input is allowed up to two times, and if the key input is inappropriate even after three inputs, no acceptance is made. This operation is performed as follows in FIG. Analysis control means 1
If the input key data is determined to have no meaning or is not in a predetermined order based on the key data memory table, the analysis control means 1 increments register j by 1 and sends the key data to the response sound generation means 6. Sends instruction data and sends error response sound. Furthermore, even after three key inputs, if the input key data has no meaning or is not in the predetermined order, the analysis control means 1 increments register j by 1 and updates the data in register j. is 3, the instruction data is sent to the response sound generation means 6, and the response sound generation means 6 generates a rejection response sound.

Next, the operating state is at the end of opening, and the step
I will explain what happens when you proceed to step 101. in this case,
Proceed to step 201 shown in Figure 5, where the CPU
11 sets 1 in register j in main memory 18 for management of the management table. In FIG. 1, when data management means 2 manages management table 4 based on instruction data from analysis control means 1, step 201 is executed by setting register i to 1. Proceeding from step 201 to step 202, the CPU 11 compares the total number of management tables SUM with the data in register i. In FIG. 1, data management means 2
However, step 202 is executed by comparing the total number of pointers _P1 with the data in register i. Here, if the total number of management tables SUM is greater than or equal to the data in register i, step 202 is executed.
Proceeding to step 203, the CPU 11 reads register i.
It is determined whether the expiration date has expired by referring to the expiration date data in the management table corresponding to the data in the data. In FIG. 1, data management means 2 searches the management table corresponding to the data in register i based on pointer _P1 , refers to its expiration date data, and compares it with the date data of its own timer. , the above step 203 is executed by determining whether the time limit has expired or not. If not expired (valid), the step
Proceeding from step 203 to step 204, the CPU 11 sets the record management flag in the management table.
Also, if the time limit has expired, step 203
The process then proceeds to step 205, where the CPU 11 resets the record management flag in the management table and erases the corresponding image data. In FIG. 1, steps 204 and 205 are executed by the data management means 2 resetting the record management flag and erasing the corresponding image data at the time of resetting. Next, step
Proceeding to step 206, the CPU 11 adds 1 to register i, and returns to step 202. In FIG. 1, step 206 is executed by the data management means 2 adding 1 to register i and returning to the operation of step 202 again. By repeating such operations, when all the management tables are organized, the total number of management tables SUM becomes less than or equal to the data in register i. At this time, step 202 to step 207
Then, the CPU 11 performs journal aggregation.
In FIG. 1, this step 207 is performed as follows. The data management means 2 uses the pointer
As a result of comparing the total number of _P1 and the data in register i, if the data in register i has become larger, data management means 2 notifies analysis control means 1 of the end of the operation. Then, the analysis control means 1
Based on this, it sends instruction data to the journal management means 8 instructing the start of operation. Journal management means 8 receives the instruction data, searches the management table 4 with reference to pointer _P2 , and when the manuscript input date data corresponds to the date data indicated by the timer, terminal registration number data, terminal ID data, terminal Read name data, manuscript serial number data, expiration date data, and manuscript number data. In this way, all management tables are searched and journal information data for one day is totaled. The journal management means 8 sends this journal information data to the analysis control means 1. The analysis control means 1 sends the journal information data to an output device (line printer 23 in FIG. 3) to output the journal information.

In this way, in the embodiment, the expiration date of the image data of the original is managed, and the image data received by the facsimile device is within the expiration date, so that old data that is not valid is provided as in the past. disappears. In addition, the image data whose expiration date has expired will be deleted from the external storage device 3.
The area of the (magnetic disk device 12) for storing image data is effectively used. Further, since the facsimile storage device 10 automatically responds and automatically manages image data, the facsimile storage device 10 as a center device does not require an operator for responding.

In the embodiment, the record management flag is provided in the management table corresponding to the image data filed as a batch and in the management table corresponding to the image data of each original document, but it is possible to provide the record management flag only in one of these tables. Also good. Furthermore, the expiration date data may be provided in all management tables corresponding to image data for each document. In this way, only a part of the image data that has been filed as a batch can be invalidated, and only valid image data can be provided to the facsimile machine. Also, when registering image data, expiration date data is sent as key data, but expiration date data is
It may also be included in a communication control signal such as a DCS signal.
In this case, the steps in the flowchart in Figure 4
108 and 109 are included in step 110.

〔Effect of the invention〕

As explained above, according to the present invention, the user does not have to judge the validity of the image data received from the facsimile storage device of the present invention, and the problem that occurs when invalid image data is received, that is, the facsimile There is no problem that the recording paper on which image data received by the device is recorded is wasted.

Therefore, the information service system can be suitably operated.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram of an embodiment of the present invention.
Figure 2 is a diagram to explain the main part of Figure 1, Figure 3
The figure is a block diagram of an information service system including an apparatus according to an embodiment of the present invention, and FIGS. 4 and 5 are flowcharts showing the operation of the apparatus according to an embodiment of the present invention. 1...Analysis control means, 2...Data management means,
3...external storage device, 4...management table, 5...
...Data transmission/reception means, 6...Response sound generation means, 7
...Transmission control means, 8...Journal management means,
10...Facsimile storage device, 11...CPU
(Central processing unit), 12...Magnetic disk device, 1
3...Key data recognition unit, 14...Image data transmission/reception unit, 16 ₁ ,..., 16n...Telephone, 17 ₁ ,
..., 17 _o ... facsimile device, 18 ... main storage device, 20 ... multiplexer, 30 ... terminal device.

Claims (1)

[Scope of Claims] 1. A facsimile storage device that files and stores image data in predetermined units, comprising: data management means that manages a management table that includes expiration date data for each predetermined unit of filed image data; , a data transmitting/receiving means for transmitting all or part of the filed image data to another facsimile device, and control for controlling the data transmitting/receiving means to transmit only the image data that is valid according to the expiration date data. A facsimile storage device characterized by comprising means. 2. The facsimile machine according to claim 1, wherein the expiration date data of the management table is set for each image data corresponding to one page of the original in the filed image data, as necessary. Accumulator. 3. The management table is provided with a record management flag indicating whether or not the image data corresponding to the management table is valid, and the data management means checks the record management flag at a predetermined time based on the expiration date data of the management table. The facsimile storage according to claim 1 or 2, wherein the control means determines the validity of the image data based on the record management flag and controls the data transmission/reception means. Device.