JP3274309B2 - Time recorder with time change check function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the technical field of a time clock for managing employment (time management) based on the date and time of an internal clock. This is a time recorder with a time change check function that is devised so that if the time is changed and the attendance data is entered at a time different from the original time, the fact of this time change can be accurately checked and recorded. is there.

[0002]

2. Description of the Related Art In a conventional time recorder, a key switch (key hole) for mode switching is provided on an airframe as disclosed in, for example, Japanese Patent Application Laid-Open No. 4-10093, and a special key is inserted into this key switch. When the internal clock is set to the time setting mode, the internal clock can be set and operated.Therefore, only the administrator with a dedicated key can change the date and time of the internal clock, and cannot be changed by ordinary people. ing.

For those who have forgotten to enter the time required for attendance management, a key switch for mode switching is provided in the same manner as the above-mentioned time recorder, as seen in Japanese Utility Model Application Laid-Open No. 63-155573. It is configured such that the administrator can input the correction data without changing the time of the internal clock by inputting the time of entering and leaving the work with numerical keys in accordance with the data correction operation mode using a dedicated key. .

[0004] However, the problem is that a general person steals a special key possessed by an administrator to create a key, changes the time of an internal clock arbitrarily when inputting daily attendance data, and incorrectly inputs a time card. In addition, for those who have been fraudulent by the administrator himself, for example, who are late and did not intentionally enter a work time, the time of the internal clock is not delayed without using the data correction operation mode. After that, there was also a case where a person's time card was inserted and the work time was incorrectly entered.

[0005] As disclosed in Japanese Patent Application Laid-Open No. 1-150993, it is conceivable to prevent the key from being illegally used by changing the time of an internal clock only after inputting a password. However, if the security code is not provided to the manager, the correction of the error of the internal clock cannot be left to the manager, which is troublesome for the manager and significantly increases the burden. If this password is given to the administrator, unauthorized input by the administrator described above is expected. In any case, it is impossible to completely prevent unauthorized correction of the internal clock. Was desired.

Accordingly, the present applicant has filed a Japanese Patent Application No. 5-238.
According to the application of No. 865, the difference between the current date and time of the internal clock and the absolute date and time is stored in the data memory as the date and time difference.
When the date and time of the internal clock is changed, an absolute date and time is obtained from the date and time before the change and the date and time stored in the data memory, and the difference between the date and time after the change and this absolute date and time is calculated as a new date and time difference. And stored in the above data memory as
Each time attendance data is input, the date and time difference stored in the data memory is checked, and if the absolute value of the date and time difference is equal to or greater than a preset reference time, a record of time tampering is recorded. A time management device with a time tampering check function has been developed.

However, the time management device with a time tampering check function according to the above-mentioned application has a configuration in which the time is tampered, that is, the time is changed only when the absolute value of the date and time difference is equal to or greater than a preset reference time. Therefore, a time change of less than the reference time (for example, less than 5 minutes) cannot be detected.

On the other hand, according to the invention described in claim 1 of Japanese Patent Application No. 5-326326, filed by the present applicant, in accordance with the accumulated error of the internal clock from the time of time setting, The time change can be detected by changing the reference time in a range of 1 to 5 minutes. According to the invention described in claim 3, the time difference can be detected by focusing on the time difference between the absolute date and time and the internal clock. Since the +/- polarity of the time difference is different between the time of falsification and the time when the time is restored, or the absolute value is small, the time change of the reference time can also be detected. It is now possible to detect minute time changes.

[0009]

However, in the invention described in claim 1 of the above-mentioned application, since the reference time for deeming the time change changes with time, a time change of one minute is always accurately detected. I couldn't do it.

Further, according to the invention described in claim 3 of the above-mentioned application, after the time is changed, detection is performed only when the time is returned to the original time. Therefore, a change mark (falsification mark) is added to the time card immediately after the time is changed. There was a frustration that could not be warned by printing.

[0011] In addition, from a user (monitor) who has been experimentally used, if a minute time change is several minutes, it may be an error correction of the internal clock, or an intentional change. However, in order to use it as a change history of the internal clock,
Anyway, there was a strong request that some kind of record be recorded regarding the time data entry after the change.

Therefore, a technical problem of the present invention is that a time change can always be detected even with respect to the minimum unit of time (for example, one minute) in employment management. Is to leave a record.

[0013]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

Date and time difference storage means for storing the difference between the current date and time of the internal clock and the absolute date and time as a date and time difference in a data memory;
When the date and time of the internal clock is changed, an absolute date and time is obtained from the date and time before the change and the date and time stored in the data memory, and the difference between the date and time after the change and this absolute date and time is calculated as a new date and time difference. In the time recorder comprising date and time difference rewriting means to be stored in the data memory,

(1) Each time the attendance data is input, the date and time difference stored in the data memory is checked to determine whether or not the absolute value of the date and time difference is equal to or greater than a reference time. Means, a date / time difference time elapse determining means for determining whether or not a time equal to or more than the absolute value of the date / time difference has elapsed since the time when the date and time of the internal clock is changed, and a result of the determination by each of these determining means, the absolute value of the date / time difference Time change recording means for recording the time change only when it is determined that the time is not less than the reference time and the time is not more than the absolute value of the date and time difference from the time of the date and time change. .

(2) A change time elapse determining means for determining whether or not a predetermined time has elapsed since the time when the date and time of the internal clock is changed, and a determining means for determining whether or not the predetermined time has elapsed, A date / time difference correcting means for correcting the date / time difference in the data memory to 0 when the determination is made;

Here, the “absolute date and time” means a date and time according to the world date and time.
From the current date and time of the internal clock and the date and time difference stored in the data memory (date and time difference = current date and time of the internal clock−absolute date and time), the absolute date and time are grasped.

[0018]

The means described in (1) and (2) operate as follows.

According to the means described in the above (1), regarding a minute time change of several minutes, only the time data input in a state where the change has an influence on work management,
Enables keeping a record of time changes.

For example, reference time = 1 minute, start time = 9:
If the user goes to work at 9:01 and sends the internal clock for two minutes and changes the time to 8:59, the changed time is changed to 8:59.
If the attendance data is input between 00 seconds and 9:00 59 seconds, it is supposed to be late but it is not late. This time change is recorded in the record. However, if the attendance data is input after the internal clock is changed and the date and time difference is equal to or more than two minutes, the time change is completely late. Is not affected at all, so no record of time changes is kept.

For example, when the internal clock is advanced by 4 minutes at 16:56 and the time is changed to 17:01 at 16:56 when the working time is 17:00, 17:00 from 17:00 seconds after this change is set to 1
Until 7: 0359 seconds, from 16:56 to 16:59 in the world, it should be early retirement but not early retirement. Therefore, there is a great risk of time change (time falsification). This time change is recorded in the record. However, after the change, if the time difference = 4 minutes or more has elapsed, the time change does not have any effect on work management because the time does not prematurely depart, so the time change record is not recorded. Not to leave.

The above reference time is generally set to one minute. However, in the case of a company having a grace time in the employment rules, for example, up to two minutes are allowed to be late or leave early. It is also necessary to set the reference time to one minute or more in accordance with the above.

According to the means described in (2) above, if an error occurs in the internal clock, an error equal to the error also occurs in the absolute date and time. Preset time (for example, 18 hours)
Is corrected to 0 when elapses, so that subsequent time data entry is not affected.

The preset time may be the absolute value of the date and time difference, and is not limited to a fixed time (for example, 18 hours).

As described above, the technical problems described above can be solved by the above-described means, and the problems of the conventional technology can be solved.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the above-described time recorder with a time change check function according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the external appearance of a time clock with a time check function according to the present invention. In this drawing, reference numeral 1 denotes an electronic time clock, and 1a denotes FIG.
2 is a card pocket which is configured to insert a time card TC freely, 2 is a display for displaying the current date and time, etc. Numeral 3 generally designates a numeric keypad 3a and an attendance key 3b which is turned on when attending. Departure key 3 that turns ON when leaving
c, and a keyboard 4a and 4b consisting of a key hole 3d dedicated to mode switching.
When the display lamp provided for the internal clock 8 shown in FIG. 2 is switched to the time setting mode by inserting a dedicated key (not shown) into the key hole 3d, the date and time of the internal clock 8 shown in FIG. 2 can be freely adjusted. It is structured.

FIG. 2 is a block diagram for explaining the electrical configuration of the time recorder 1 described above. A BUS 9 connected to a CPU 5 serving as the center of a control unit includes a ROM 6 storing a system program and a reference time, and a date and time difference. Or a data memory RAM 7 for storing time falsification records and the like to be described later.
, An internal clock 8 and an interface circuit 10. The interface circuit 10 further includes display lamps 4 a and 4 in addition to the display 2 and the keyboard 3 described above.
A lamp 4 of a key including a, a printing device 11 for printing employment data, a time change mark, or a change history, etc., and a sounding device 12 for generating various precautions and communication items as necessary are connected. Each is controlled and operated in accordance with a system program stored in the ROM 6 under the supervision of the CPU 5.

As described in the principle explanatory diagram shown in FIG. 8, in the time clock 1 configured as described above, the difference between the current date and time of the internal clock 8 and the absolute date and time is stored in the data memory RAM 7 as the date and time difference. Date and time difference storage means ", when the date and time of the internal clock 8 is changed, an absolute date and time is obtained from the difference between the date and time before the change and the date and time stored in the data memory RAM 7; Is provided in the data memory RAM 7 as a new date / time difference.

Further, the time recorder 1 checks the date and time difference stored in the data memory RAM 7 each time the attendance data is input, and the absolute value of the date and time difference is equal to or longer than a reference time (for example, one minute). A “date and time difference reference determining unit” that determines whether or not a time has elapsed since the time of the date and time change of the internal clock 8, and a “date and time difference elapsed determining unit” that determines whether or not the time has passed by the absolute value of the date and time difference. Only when it is determined that the absolute value of the date and time difference is equal to or more than the reference time and that the time equal to or greater than the absolute value of the date and time difference has not elapsed since the time of the date and time change, "Time change recording means" for recording the change (time falsification) is provided.

In addition to the above, the time clock 1 includes:
"Change time elapse determining means" for determining whether a predetermined time (e.g., 18 hours) has elapsed since the date and time of the internal clock 8 was changed; Data memory RAM
"Date / time difference correcting means" for correcting the date / time difference of 7 to 0 is also provided.

FIG. 3 shows that the RO is set by inserting a special key into the key hole 3d and switching to the time setting mode.
9 is a flowchart illustrating a procedure of a setting process of the internal clock 8 executed according to a program stored in M6. When the date and time to be corrected in the first step S1 is input using the numeric keypad 3a, the process proceeds to step S2. Then, the current date and time before the input value is set in the internal clock, that is, the date and time at the time of correction (current time) are stored in the RAM 7 as "date and time before change".

Next, the process proceeds to step S3, where
The date and time of the key input are set in the internal clock 8 in step 1, and it is determined in next step S4 whether the check word in the data memory RAM 7 is correct. If the correct check word has been recorded, the process proceeds to step S5. The absolute date and time are obtained from the date and time before the change and the date and time difference (the difference between the internal clock 8 and the absolute date and time) stored in the data memory RAM 7, and then the process proceeds to step S6, where the current date and time and the current date and time are obtained. A new date and time difference is obtained from the absolute date and time, and the date and time difference in the data memory RAM 7 is rewritten with the new date and time difference. The process proceeds to the next step S7, and the absolute date and time obtained in the above step S5 is changed. The start date and time are stored in the data memory RAM 7 and the process is terminated.

On the other hand, if it is determined in step S4 that the correct check word is not recorded in the data memory RAM 7, the process proceeds to step S8, where the correct check word is automatically written in the data memory RAM 7, and then Then, the process proceeds to steps S9 and S10, where the date and time difference and the starting date and time stored in the data memory RAM 7 are rewritten to 0, respectively, and the process is terminated.

FIG. 4 is a flow chart for explaining the processing operation of the time clock according to the present invention at the time of leaving / working. In the first step S11, whether the processing is going to or leaving the work by turning on the working time key 3b or the leaving key 3c. Is determined, and then in step S12, the time card TC
Is inserted into the time clock 1, the flow advances to step S13 to obtain the current time from the internal clock 8, and the next step S13 is executed.
After setting the current time in the print data (work data or leaving data) to be printed in step 14, the process proceeds to the next step S15.

In step S15, an absolute date and time is obtained from the current date and time and the date and time difference. Then, the flow advances to step S16 to determine whether or not this absolute date and time has elapsed from a start date and time by a preset time (for example, 18 hours). If it is determined that the time is within the time, the process proceeds to step S17. If the time has passed, the process proceeds to step S24, and the data memory R
The date and time difference of AM7 is corrected to 0, and then the process proceeds to step S25.

In step S17, it is determined whether or not a time equal to or greater than the absolute value of the date and time difference has elapsed since the date and time when the internal clock 8 was changed (start date and time). The process proceeds to the next step S18, and if the time has elapsed (if the absolute value or later), the process proceeds to step S25.

In step S18, the data memory RAM
It is determined whether or not the absolute value of the date and time difference stored in 7 is equal to or greater than a reference time (for example, 1 minute), that is, whether or not the internal clock 8 has been tampered with. In the case of, the process proceeds to step S19, and if the time is within the reference time (when the change is not unauthorized), the process proceeds to step S25.

In step S19, a falsification mark M (see FIG. 5) is added to the print data of attendance or leaving work to be printed on the time card TC, and then the process proceeds to step S20 where the absolute time MH is added to the print data. (See FIG. 5), and the process proceeds to the next step S21.

In step S21, the print column position of the inserted time card TC is determined. Then, the flow advances to step S22 to print the above-described print data in a predetermined print column of the time card TC as shown in FIG. To step S23
To discharge the time card TC into the card pocket 1a and finish the process.

In the embodiment shown in FIG. 5, the "@" mark is printed as the falsification mark M. However, this mark is an example of the embodiment, and for example, as shown in FIG. On the other hand, it is also possible to print a colon mark Ma in which three more dots are printed than the normal colon mark Mb, or to print the font or size of the print data Ra in a state different from the normal state. , Its form is arbitrary.

On the other hand, in step S25 described above, the type of irregular work of late, early retirement, or overtime is determined. If it is determined in step S26 that the job is late, early retirement, or overtime, the next In step S27, the irregular work type print determined as described above is added to the print data, and the flow proceeds to step S21 described above. If it is determined that neither late, early retirement, or overtime work is performed, step S21 is performed. To print data on the time card TC.

FIG. 6 shows an example of the time change shown in Table X. Assuming that the start time is 9:00, the point (a) is a normal time when the internal clock 8 is not changed. ,
The internal clock 8 and the absolute date and time are respectively 9: 0100 ″, the date and time difference is “0”, there is no fact that the time has been changed, and the work management is “late”. If the time is incorrectly changed to 8:59 000 "as described above, the absolute date and time is 9: 0100", and the date and time difference is -2 minutes, which exceeds the reference time (1 minute). When the data is input, the time has not elapsed since the absolute value of the date and time difference has elapsed, so that it is determined that the time has been changed, and the change mark M is displayed as shown in the print column on the 14th day of the time card TC shown in FIG. Is printed together with the time data Ra.
The absolute date and time MH is also printed together, and becomes "normal work" in terms of employment management.

The determination of the time change is continued until 9: 0059 seconds in which the time has not elapsed more than the absolute value of the date and time difference, so that the point (c) has elapsed from the point (b) by one minute.
When the attendance data is input in the same manner as in the point (b), the change mark M and the absolute date and time (9:02 5
9 ") and time data (9:00 59") is printed, but when the attendance data is input at point (d), which is one second after point (c) (9: 0100 ") Means that the absolute date and time is 9:30 00 ″, and the time exceeds the absolute value of the date and time difference, and it is treated as “late”, and the time change has no effect on employment management. Time data R without mark M
The letter “a” is printed with “a” late.

Further, when the fraudulent person advances the internal clock 8 by 2 minutes and 15 seconds at the time (9: 0145 ″) at the point (e) 45 seconds after the point (d), the point (f) is shown. 9: 4400 ", and the absolute date and time is 9: 0345" at this point, and the date and time difference is +15 seconds, which is within the range of the reference time. Therefore, the time change mark M is not added thereafter. .

In FIG. 5, Rb is a time change mark M
And time data at the time of leaving the office, which is printed with the absolute date and time MH.

[0047]

As described above, according to the time recorder with the time change check function according to the present invention, even a minute time change of several minutes can be properly detected, and the time when the attendance data is input can be detected. If the administrator corrects the error in the internal clock during the time when employees do not go to work or leave, the time change by an unauthorized person can be left as a record of time tampering. It can be used, and as a result, can prevent time tampering and can help to regulate disciplines regarding employee work.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a time clock with a time change check function according to the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the time clock shown in FIG.

FIG. 3 is a flowchart illustrating a procedure for setting an internal clock.

FIG. 4 is a flowchart illustrating a processing procedure for performing an operation of entering and leaving data using the time clock according to the present invention.

FIG. 5 is a front view showing a part of a time card printed by the present invention.

FIG. 6 is an explanatory diagram showing an example of a time change in a table.

FIG. 7 is a configuration diagram showing an embodiment of a time change mark.

FIG. 8 is a principle explanatory diagram for explaining a function of a time clock with a time change check function according to the present invention.

[Explanation of symbols]

 1 Time Recorder 7 RAM (Data Memory) 8 Internal Clock TC Time Card Ra Time Data M Time Change Mark

Claims (2)

(57) [Claims] 1. A date / time difference storage means for storing a difference between a current date / time of an internal clock and an absolute date / time as a date / time difference in a data memory, and when the date / time of the internal clock is changed, the date / time before the change and the data memory are stored. An absolute date and time is obtained from the date and time difference stored in the data memory, and the difference between the date and time after the change and the absolute date and time is set as a new date and time difference. In this case, every time the attendance data is input, the date and time difference stored in the data memory is checked, and a date and time difference reference value determination unit that determines whether the absolute value of the date and time difference is equal to or greater than a reference time, Date and time difference time elapse determination means for determining whether or not a time equal to or more than the absolute value of the date and time difference has elapsed since the time of date and time change of the internal clock. Above And a time change recording means for recording a time change only when it is determined that a time equal to or more than the absolute value of the date and time difference has not elapsed since the time of the date and time change. Time clock with change check function. 2. A change time elapse determining means for determining whether or not a predetermined time has elapsed from the time when the date and time of the internal clock has been changed, and a determination means for determining whether or not the predetermined time has elapsed. 2. The time recorder with a time change check function according to claim 1, further comprising a date / time difference correction unit that corrects the date / time difference of the data memory to 0 when the determination is made.