JP2628402B2 - Image data communication device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data communication apparatus capable of storing image data in a flexible memory (hereinafter referred to as a floppy disk) such as a floppy disk, a diskette, a mini floppy disk, and a micro floppy disk. Things.

[Conventional technology]

2. Description of the Related Art Conventionally, an image data communication device that transmits and receives image data by wire or wirelessly includes a floppy disk drive in addition to an image memory composed of an integrated circuit (hereinafter referred to as an IC) that stores communication data in a consistent manner, and stores the communication data on a floppy disk. Sometimes. The operation is performed as shown in the reception operation flowchart of FIG.

That is, when image reception is started, the presence or absence of recording paper is determined in step S1, and if there is no recording paper, the process proceeds to step S2, and the presence or absence of remaining storage capacity of the received image memory is determined. Proceeding to S3, the presence or absence of the remaining recording capacity of the floppy disk is determined, and if recording on the floppy disk is possible, proceeding to step S4, the received data is recorded on the floppy disk. Step after receiving
Proceed to S6 to execute post-processing. If there is a recording sheet in step S1, the flow advances to step S7 to execute normal reception on the recording sheet. If there is remaining capacity in the received image memory in step S2, the process proceeds to step S8, where the received data is stored in the received image memory, the recording paper is refilled later, and the data is transferred to the recording paper. If there is no remaining recording capacity on the floppy disk at step S3, the process proceeds to step S9 to execute error processing.

In addition, a communication data memory required for the above operation, a memory for storing so-called management information such as a communication result, and a clock IC for displaying the date and time to an operator through a display or the like are incorporated.

[Problems to be solved by the invention]

However, the conventional image data communication apparatus performs recording and reception on a floppy disk only when there is no recording paper, there is no remaining image memory capacity, and there is a remaining capacity of the floppy disk.

As described above, a floppy disk is often used as an auxiliary memory of an image memory usually formed of an IC memory. This is because the access time to the floppy disk is much slower than that of the IC memory due to the need for seeking and the like.

Normally, access to the floppy disk is performed only when the memory is received to the floppy disk, and when the user record paper is supplied to the facsimile after the memory is received and the floppy disk data is read.

Therefore, access to the floppy disk is usually not performed when there is recording paper or when there is remaining capacity in the image memory. Therefore, depending on the case, access to the floppy disk may not be performed for several years.

If the floppy disk and the head are left standing at the same contact point in such a state, the floppy disk is warped, and accidents such as data destruction are likely to occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and prevents the floppy disk from warping and destruction of recorded data caused by long-term contact and pressurization of the same position on the floppy disk by the head. It is an object of the present invention to provide an image data communication device according to the present invention.

[Means for solving the problem]

Therefore, an image data communication apparatus according to the present invention aims to achieve the above object by providing the following constituent devices.

An image data communication device comprising a floppy disk drive and capable of storing communication image data on a floppy disk, backed up by a backup power supply,
A clock means and a clock means capable of operating over time even when the main power is shut off,
A storage unit that is backed up by the backup power supply and stores the time of the clock unit when the floppy disk was last driven and the elapsed time after that; and the storage information stored in the storage unit and the time measurement by the current clock unit. Comparing means for calculating the elapsed time from when the floppy disk was last driven; and when the comparing means detects that the elapsed time has reached a preset time, the floppy disk is used. Control means for driving a disk drive to move the point of contact between the floppy disk and the read / write head; and adjusting the date and time of the clock means and, if the date and time adjustment has been performed, the information stored in the storage means An image data communication device, comprising: a time control means for simultaneously updating the data.

(Operation)

With the above configuration, the storage unit stores the date and time when the drive of the floppy disk drive has been completed, and calculates the elapsed time from the end of the drive by the clock unit. When the elapsed time reaches a period set in advance by the comparing means, the floppy disk drive is driven to move the contact point between the floppy disk and the read / write head.

Further, when the clocking means and the storage means are configured to continue operating by the backup power supply at the time of the commercial power failure, even if there is a commercial power failure, the storage of the date and time when the floppy disk drive has finished driving, The calculation of the elapsed time from the end of the driving and the detection of the fact that the elapsed time has reached the period set in advance by the comparing means can be accurately executed.

Furthermore, when the date and time of the clock of the clock device are corrected, when the configuration is such that the stored clock time data of the storage device is corrected and stored again, even when the date and time of the clock are corrected, the calculation of the elapsed time, and In addition, the comparison means can accurately detect that the elapsed time has reached a predetermined period.

〔Example〕

Hereinafter, an image data communication apparatus according to the present invention will be described with reference to embodiments. A case of facsimile will be described as an embodiment.

FIG. 1 is a block diagram showing an embodiment according to the present invention, FIGS. 2 and 3 are operation flowcharts of the embodiment, and FIG. 4 is an explanatory diagram of a positional relationship between a floppy disk and a head.

In FIG. 1, 1 is a document reading unit for reading a transmission document and converting it into image data, 2 is a recording unit for printing a received image and a communication result report, and 3 is a network control device for connecting a telephone line to a facsimile. NCU, 4 is a modulation / demodulation device for communication, that is, a modem, 5 is a modem control unit for controlling the modem 4, 6 is an operation panel, 7 is a display for displaying the status of facsimile to the user, and 8 is a user. A key for instructing the facsimile machine to perform various operations, a sensor 9 for detecting a state of the facsimile machine, a memory 10 as a storage means, and an image memory 11 for storing received image data and the like. It also serves as a buffer for received image data when storing. Reference numeral 12 denotes a system RAM, which is a memory that is backed up by a battery or the like (not shown) and does not destroy data even when the commercial power supply is cut off due to a power failure, etc., 13 is a ROM, which determines facsimile specifications, and 14 is a floppy disk controller (FDC). , 15 is a floppy disk drive (FDD), 16 is a floppy disk, 17 is a clock IC that can be backed up by a battery or the like (not shown) even when the commercial power supply is cut off due to a power failure or the like, and can continue to operate. Is a central control unit for controlling each of the blocks indicated by. The central control unit 18 constitutes a comparing means, and also constitutes a time measuring means together with the clock IC.

Next, the operation of the embodiment having the above configuration will be described. First, in the above-described conventional technique, when the image reception is started, the operation is performed in accordance with the flow from steps S1 to S9, similarly to the operation described with reference to the flowchart in FIG. And
The reception ends in step S5, and the flow advances to step S6 to execute the operation shown in the flowchart of FIG. 2 as one operation of the post-processing.

That is, when the access to the floppy disk 16 is completed, the process proceeds to step S21 in FIG. 2, and the system RAM shown in FIG.
12 stores the access end date and time. The system RAM 12 stores, in addition to this data, set value data (hereinafter referred to as a difference date and time) indicating how many days and time have elapsed with respect to the access end date and time to move the contact point between the floppy disk 16 and the head. I have. Then, step S22
The central control unit 20 shown in FIG. 1 calculates the elapsed date and time by comparing the clock IC 17 with the access end date and time, and if the elapsed date and time exceeds the difference date and time in step S23, the process proceeds to step S23.
Proceed to 24, drive the floppy disk drive 15 to access the floppy disk, rotate the floppy disk, and move the point of contact between the floppy disk and the head.

When this operation is completed, the process proceeds to step S25, and the end date and time and the updated difference date and time are stored in the system RAM 12.

Further, even when the commercial power supply is cut off due to a power failure, the system RAM 12 and the clock IC 17 are backed up by a battery or the like as described above, and can continue to operate. Therefore, when the power is turned on again, the central control unit 20
Can restart the comparison between the clock IC 17 and the access end date and time, and the operations in steps S21 to S25 are correctly executed.

Next, the clock IC 17 can be modified by the user with the key 8 shown in FIG. FIG. 3 is a flowchart showing the processing at this time. As shown in FIG. 3, in steps S31 and S32, a difference between the corrected date and time data of the clock IC 17 and the date and time data of the clock IC 17 before correction is calculated.
Then, the process proceeds to step S33 to temporarily stop the calculation of the elapsed date and time in step S22 in FIG.
To correct. Then, the process proceeds to step S35, where the difference calculated in S32 is added to the difference date and time stored in the system RAM 12, and the process proceeds to step S36, in which the date and time data temporarily stopped in S33 can be restarted.

By the above-described series of operations, even if the clock IC date / time data is corrected, the comparison between the clock IC and the access end date / time can be resumed without any problem, the difference date / time can be correctly managed, and the floppy disk drive can be driven.

FIG. 4 is an explanatory diagram showing the relationship between a floppy disk and a head. Reference numeral 19 denotes a floppy disk magnetic material, and point a is the current point of contact between the head and the floppy disk magnetic material. Here, when the magnetic material of the floppy disk rotates, the contact point a moves to the point b, for example.

When the head is moved in the outer peripheral direction, the contact point a moves to, for example, the point c. When the contact point is moved in the inner circumferential direction, the contact point a moves to, for example, a point d.

As described above, in a floppy disk, the head and the magnetic material of the floppy disk are always in contact, and the point of contact is at the point of rotation of the magnetic material of the floppy disk by driving the floppy disk drive or by moving the head to move the magnetic material of the floppy disk. You can move to each part.

That is, the rotation of the floppy disk when the difference date and time described with reference to the flowchart of FIG.
The contact point between the magnetic material of the floppy disk and the data write / read head is moved.

Then, as means for moving the contact point, instead of rotating the floppy disk in step S24 of the above embodiment, the head may be moved in the outer circumferential direction or the inner circumferential direction, and writing or reading may be executed. In any case, the same effects can be obtained and are included in the present invention.

In addition, the memory and the clock IC must use the same memory as the conventional equipment that stores so-called management information such as communication results, and the clock IC for the purpose of displaying the date and time to the operator on a display or the like. Accordingly, the configuration can be performed without adding special hardware, and a low-cost and inexpensive device can be supplied to the user.

〔The invention's effect〕

As described above, according to the present invention, the elapsed time from the date and time when the drive of the floppy disk drive stored in the storage means has been completed is calculated by the timer means. And
When the comparing means detects that the elapsed time has reached a predetermined period, the floppy disk drive is driven to move the contact point between the floppy disk and the read / write head, so that the floppy disk drive is moved to a fixed position on the floppy disk. It is possible to prevent the floppy disk from warping due to the head having been stopped for a long period of time and to prevent the destruction of communication data.

The driving of the floppy disk drive may be a short rotation of the floppy disk, a movement of the read / write head, or a short operation of writing or reading to or from the floppy disk.

Further, when the clocking means and the storage means are configured to continue operating by the backup power supply at the time of the commercial power failure, even if there is a commercial power failure, the storage of the date and time when the floppy disk drive has finished driving, The calculation of the elapsed time from the end of the driving and the detection of the fact that the elapsed time has reached the period set in advance by the comparing means can be accurately executed. Further, when the date and time of the clock of the timekeeping means are corrected, when the configuration is such that the stored clock time data of the storage device is corrected and stored again, even when the date and time of the clock are corrected, the calculation of the elapsed time, and Since it is possible to accurately detect that the elapsed time has reached a predetermined period by the comparing means, it is possible to more appropriately prevent the warpage of the floppy disk and the destruction of the communication data, and to improve the floppy disk drive. Is not driven earlier than the set period.

That is, it is possible to provide an image data communication apparatus that prevents the floppy disk from being warped and the communication data from being destroyed due to the head stopping at a fixed position on the floppy disk for a long time.

Note that, for the implementation of the present invention, the clock IC and the memory provided in the conventional image data communication device can be used as the clocking means and the storage means without any particular provision.

[Brief description of the drawings]

1 is a block diagram of a facsimile apparatus according to an embodiment of the present invention, FIGS. 2 and 3 are operation flowcharts of the embodiment, FIG. 4 is an explanatory view of a contact point between a floppy disk and a head, FIG. FIG. 5 is a flowchart of the receiving operation. 10 is a storage means (memory), 11 is an image memory, 12 is a system RAM, 15 is a floppy disk drive, 16 is a floppy disk, 17 is a clock IC for clocking means, 18 is a central control unit which also constitutes clocking means and comparing means. Numeral 19 is a floppy disk magnetic material, and a, b, c, and d are contact points between the floppy disk magnetic material and the head.

Claims (1)

(57) [Claims] 1. An image data communication device comprising a floppy disk drive and capable of storing communication image data on a floppy disk, comprising: a clock unit backed up by a backup power supply and capable of operating a clock and a lapse of time even when the main power supply is shut off. A storage unit that is backed up by the backup power supply and stores the time measured by the clock unit when the floppy disk was last driven and the elapsed time after the clock unit; and storage information stored in the storage unit and the current clock unit. Comparing means for calculating the elapsed time since the last drive of the floppy disk by comparing the time measurement; and when the comparing means detects that the elapsed time has reached a preset time, Drive the floppy disk drive to read the floppy disk and read /
Control means for moving a point of contact with the write head; and time-measurement control means for adjusting the date and time of the clock means and, when the date and time adjustment is performed, simultaneously updating information stored in the storage means. An image data communication device, characterized in that: