JPH04111146A - Data transfer device - Google Patents

Abstract

PURPOSE:To omit the disadvantage like the charging, etc., at the transmission side by permitting the call given from a device of the remote side only when a storage medium is removed from a drive unit when the received data are written into the storage medium. CONSTITUTION:The information on the corresponding FD such as the presence or absence of protection are fetched by an FDC 4 in regard of one FD attached to a drive unit as long as a device of the remote side requests the transfer of data and an FD is attached to either one of drive units. Then the corresponding drive unit is pointed to the FDC 4 as the writing destination of the transfer data in a data transfer enable state based on the presence or absence of protection of the FD and a reception end flag. Thus a writing operation stands by for the transfer of data. Meanwhile a display code showing the reason for absence of a receivable FD is sent to the device of the remote side together with an incoming rejection response after the ringing tones are produced instantaneously or by the prescribed times if the transfer of data is impossible. Then a circuit is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a data transfer device that transfers data via a communication line.

``Prior art'' A FD (floppy disk) drive unit is provided, and data stored on the FD can be sent to a desired destination device via a communication line, and data sent from the destination device via a communication line can be received. A data transfer device having a function of writing received data to an FD has been developed.

By the way, in the above-mentioned data transfer device, after the writing of the received data to the storage medium is completed, the user attaches the storage medium to the drive unit and leaves it as it is. I have something to do. In such a case, the data transfer device or new
When the incoming call is accepted and the data is transferred, the new received data is stored in the storage medium that stored the previous received data.
There was a problem with overwriting. As a countermeasure for this, it is possible to prevent double writing by first allowing the incoming call, communicating with the other party's device, and confirming the forwarding mode. This is undesirable as it may cause disadvantages such as charges due to line usage.

This invention was made in view of the circumstances mentioned above.
It is an object of the present invention to provide a data transfer device that can prevent double writing of transferred data on a storage medium without causing disadvantages such as billing to the sending side.

The first invention is a data transfer device that is connected via a communication line and transfers data to and from a partner device, which includes a drive unit into which a storage medium is attached. , a transfer means for writing data transferred from the partner device onto the attached storage medium; and a transfer means which is set when writing of the transfer data in the transfer means is completed, and whether the storage medium is i+? i32 Has a reception completion flag that is reset at one point after being removed from the drive unit, and if there is a call requesting data transfer while the reception completion flag is in the reset state, the incoming call is permitted and the reception is completed. The present invention is characterized by comprising an incoming call control means that rejects the incoming call if there is a call requesting data transfer while the flag is in the cent state.

A second invention is based on the first invention, wherein the transfer means includes a plurality of drive units each having a storage medium attached thereto, and the incoming call control means includes one reception completion flag corresponding to each tribe unit. When there is a call for data transfer, if the reception completion flag is in a reset state, the drive unit corresponding to the reception completion flag is automatically selected as the destination for writing the transfer data, and the call is received. It is characterized by allowing the incoming call, and rejecting the incoming call when all of the reception completion flags are set.

"Operation" According to the first and second aspects of the invention, when received data is written to a certain storage medium, incoming calls from the other party's device are not permitted unless the storage medium is removed from the storage means. In this way, if the data cannot be received, the incoming call is rejected, so the sending side is not disadvantaged by charges or the like.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a data transfer device according to an embodiment of the present invention. This data transfer device is l5
A function connected to a DN (Service Integrated Digital Network) and used to transfer information stored in the FD to a desired partner station via the 15DN, and a function to record information transferred via the 15DN to the FD. has.

In FIG. 1, 1 is a CPU (
central processing unit). Also, 2 is memory,
Used to store various control information.

Further, 3 is a communication control unit, which controls the establishment of line connections and data links, as well as controls the transmission and reception of signals. Reference numeral 4 denotes an FD controller (hereinafter referred to as FDC), which controls a drive unit (not shown) and is attached to the drive unit to control successive output/writing of data in the FD. In the case of this data transfer device, 8
It is equipped with a drive unit that drives an inch FD4a, a 5 and 25 inch FD4b, and a 3.5 inch FD4C. Each drive unit is constantly monitored by the CPUI via the FDC4. As mentioned above, a reception completion flag is set in the memory 2 according to the size of each drive unit. Then, when the FD is removed from each drive unit, the response completion flag is reset and the FD is removed from each drive unit.
If the transfer data is written to 1, the corresponding reception completion flag is set. 1. To be done. Reference numerals 1 and 5 designate an operation control section, which is disposed on the operation panel of this device and detects operations of various operation buttons and supplies the operation information to each section.

The following is an example of a case where a call setup message for data transfer is received from a certain other party's device (the operation of the data transfer device here will be explained). Once received, the CPU 1i determines the contents of the requested communication from the other device h based on the information elements in the call setup message.Then, if the other device determines that the other device is requesting data transfer, CPUt executes the routine shown in FIG.

First, the process proceeds to step S1, where an FD transfer incoming call reception process is performed, that is, identification of the other party's device in response to an FD transfer incoming call is performed. Next, proceed to Sukko-knob S2, - each tribe uni,! Determine whether an FD is installed in the l.

If an FD is also installed in the drive unit and it is not 0, the judgment result in step S2 is: yo-\0-, and the
- Proceed to Step S3 to perform incoming call permission processing, which will be described below.

That is, if it is the setting mote or the hand 1111 response mote, a ringing circuit (not shown) is driven to produce a ringing tone to prompt the user to wear the FD. Then, when the user presses the first button of one of the drive units, this operation is detected by the CPU 1 via the operation control unit 5, and the CPU 1 instructs the communication control unit 3 to respond to the incoming call. At the same time, an instruction h to perform a write operation is sent to the FDC 4. Then, a response to permit incoming calls is sent from the communication system unit 3, received by the other party's device via the network, and data transfer is started. The communication control unit 3 controls the power of the other device.
Transfer - If Takatsuta is received, the received data will be transferred to F.
It is handed over to DC,1 and written to the FD. When the data transfer is completed and the line is disconnected, the reception completion flag corresponding to the drive unit that wrote the transfer data is set by the CPU 1. M1
D. If you are in the setting mode or automatic answer mode and proceed to step S3 with the FD installed in the drive unit (no 0), the response 7I4 to reject the incoming call indicates that the FD is not installed. It returns the meaning code to the other party's device and releases the line.

If an FD is installed in any of the drive units, the judgment result in step S2 becomes rYEs-1, and the process proceeds to step S4, where the FD is installed in the drive unit and
Information regarding the FD, such as whether or not it is protected, is retrieved via the FDC 4. Next, the process advances to step S5, and it is determined whether or not data transfer is possible based on whether the FD is protected and the reception completion flag. If the result of this determination is rY E S j, the process proceeds to step S3i.

Then, in step S5, the drive unit (UNIS) which has been determined whether data transfer is possible or not is instructed to the FDC4 as the write destination of the transfer data, and the write operation when data is transferred is performed in standby mode. Then, in the case of an automatic response mode, a response "to immediately permit incoming calls" is sent to the other party's device via the network. In the case of a manual response mode: 1, the ringer circuit is activated to produce a ring tone, and when the user presses the start button, a response for permission to receive a call is sent.

If the judgment result in step S5 is -NO, the process proceeds to step S6, where it is judged whether or not data transfer is possible for the previous FD. Return to , and import the status of the FD installed in another drive unit.

Further, if the determination result in step S6 is ryEs,H, the process advances to step S7. In the case of an automatic answering mode, after ringing immediately or a predetermined number of times, a response indicating that the call is rejected and a reason code indicating that a receivable FD is not installed is sent to the other party's device, and the line is connected. release.

In the case of manual response mode, a ring tone sounds, and when the user presses the start key, a response to reject the call is sent to the other party's device.

"Effects of the Invention" As explained above, according to the present invention, there is an effect that double writing of transferred data to a storage medium can be prevented without inflicting disadvantages such as charges on the sending side. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a data transfer device according to an embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the embodiment. 19. CPU, 2...Memory, 3...Communication control unit, 4-FDC, 4a, 4b, 4c-FDC, 5
---Operation control section.

Claims (2)

[Claims] (1) A data transfer device that transfers data to and from a partner device connected via a communication line, which has a drive unit into which a storage medium is attached, and which transfers data transferred from the partner device to the drive unit. and a reception completion flag that is set when writing of transfer data in the transfer means is completed and reset when the storage medium is removed from the drive unit, If there is a call requesting data transfer while the completion flag is in the reset state, the incoming call is allowed; if there is a call requesting data transfer while the reception completion flag is in the set state, the incoming call is rejected. 1. A data transfer device comprising: incoming call control means. (2) The transfer means has a plurality of drive units each having a storage medium attached thereto, and the incoming call control means has the reception completion flag corresponding to each drive unit, so that when a call for data transfer is made, At this time, if the reception completion flag is in the reset state, the drive unit corresponding to the reception completion flag is automatically selected as the write destination of the transfer data and the incoming call is permitted, and all of the reception completion flags are in the set state. 2. The data transfer device according to claim 1, wherein the data transfer device rejects the incoming call if the incoming call is received.