JPH0573168A - Date processor - Google Patents

Abstract

PURPOSE:To add the optimum information on year and month to the date and time information having the only date and time by comparing it with the time taking the advance into account while taking the error of the opposite device into account. CONSTITUTION:A device A, provided with a time holding means 1, a comparison means 2, and a discrimination means 3, keeps the time difference between the time shown by the information T included in the data received from the opposite device B and data reception time T0 presented by the self device A within + or -t minutes periodically. Then time T+1 adding (t) minutes to the data reception time T0 is obtained, the date and time of this time T+1 and time information T of the received data are compared. If the comparison result is T<=T+1, the date of the time T+1 is added as it is. When the comparison result is T<T+1, the date of one month before the time T+1 is added. When this date is the one without the date of the time information T to which this date is added, the date one more month before the date added to the time information T is added. This processing is repeated until it becomes the date where this date actually exists.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for date determination means. In particular, it relates to a processing means for adding a year and month to date information without a year and month.

[0002]

2. Description of the Related Art Conventionally, as means for adding year / month information, the date / time (date / time / minute / second) included in the received data and the time (year / month / day / hour / minute / second) which received the data are mutually date / time / minute. Compare at the second level.If the same or the received data is delayed, the year and month of the received time is added.If the received data is ahead, the year and month before the received time is added. Had been added.

[0003]

In such a conventional example, there is a drawback in that when the time stored in the partner device is ahead of the time stored in the own device, the data is recognized as one month old data. ..

The present invention eliminates such drawbacks, and an object of the present invention is to provide a date processing device having means for determining and adding an optimum year and month.

[0005]

SUMMARY OF THE INVENTION According to the present invention, in a date processing device for adding year / month information to date / time information included in data received from a partner device of a different model, a date included in data received from the partner device. A means for regularly maintaining the time indicated by the time information T within a range of time T ₀ ± t which is delayed by a predetermined time with respect to the date time T ₀ to which the date and time information at the time of reception of data indicated by the own device is added. , A time T obtained by adding the predetermined time t minutes to the date and time T ₀ at the time of data reception indicated by the own device.
₊ seek _t, and means for comparing the time of day, hour, minute and second indicated by time information T of the received data with date, hour, minute, and second of the time T _{+ t,}
If the comparison result of the comparing means is T ≦ T _{+ t} , the year / month of the date / time T _{+ t} to which the year / month information is added is added to the date / time indicated by the date / time information T, and the comparison result is T> If it is T _{+ t} , the date and time with the year and month information is added. The year and month one month before the year and month of the time T _{+ t} is added, and this date is added. In that case, it is characterized in that it is provided with a means for repeating the process of changing to a year and a month before this date until an actual date.

[0006]

The time indicated by the time information T contained in the data received from the partner device B and the data reception time T ₀ indicated by the own device A.
The time difference between and is periodically maintained within ± t minutes. Next, the time T _{+ t} is calculated by adding t minutes to the data reception time T ₀ , and the date / time / minute / second of this time T _{+ t} is compared with the time information T of the received data. _{If + t} , the year and month at time T _{+ t} are added as is. If the comparison result is T> T _{+ t} , the year and month one month before the year and month at time T _{+ t} are added, and this year and month is added. If the date of the time information T added with does not exist, the date that is one month before the date added to the time information T is added to the date when this date actually exists. This process is repeated until it becomes. As a result, it is possible to eliminate the defect that the data of the other device B is judged to be one month before when the time of the other device B is ahead of that of the own device A.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of this embodiment. In this embodiment, as shown in FIG. 1, the time indicated by the date / time information T included in the data received from the device B is compared with the date / time T ₀ to which the year / month information at the time of data reception indicated by the device A is added. Time T which is delayed by a predetermined time
Time holding means 1 which is means for periodically holding within the range of ₀ ± t, and time T _{+ t} obtained by adding the predetermined time t minutes to the date and time T ₀ at the time of data reception shown by the device A are obtained, and this time is obtained. T
_{+ t} date / time / minute / second and the date / time / minute / second of the time indicated by the time information T of the received data, and if the comparison result of this comparison means 2 is T ≦ T _{+ t} The year and month of the date and time T _{+ t to which} the month information is added is added to the date and time indicated by the date and time information T, and if the comparison result is T> T _{+ t} , the date and time T ₊ to which the year and month information is added. _If a date that is one month before the date of _t is added and the date and time of the date and time T does not exist, it will take another month until this date becomes an actual date. The determination means 3 is a means for repeating the process of changing to the previous year and month.

Next, the operation of this embodiment will be described. Figure 2
Is an example of a system incorporating the present invention. The time of the device B is periodically read from the device A, and if there is an error of ± t minutes or more compared with the time of the device A, the time is set from the device A to the device B, and the time between the device A and the device B is set. The error of is always managed within ± t minutes. Also, the data generated by the device B tries to be transmitted to the device A in real time.
If a line failure occurs between the device A and the device B, the transmission to the device A will be delayed. Hereinafter, for convenience of explanation, T: date / time information (date / time / minute / second) included in data received from the partner device T ₀ : date / time (year / month / day / hour / minute / second) data received from the partner device T _{+ t} : to T ₀ Date time plus t minutes (year month day hour minute second) T _-t : Date time minus t minutes from T ₀ (year month hour day minute second) -T _{+ t} : Date time one month before T _{+ t} (Year / month / day / hour / minute / second) Since T does not include year / month information, the range that T can take is from 00:00:00 to 31: 23: 59: 59 on 31st. Also, the date and time of T _-t is smaller than T
Present data with, but the data with date, hour, minute, and second is greater than T in the T + _t is the historical data from apparently T _{+ t} from that error of time is always within ± t min. Therefore T
The range that can be taken is considered to be the past one month from T _{+ t} .

Next, considering the past month from T _{+ t, a} method of determining the date and time will be described with reference to FIG. Figure 3
The upper straight lines of (a), (b), and (c) are T _0.
Represents the possible date and time, which is an arbitrary year and month. Figure 3
The lower straight line of each of (a), (b), and (c) is a range that T can take, and does not include the date and time of the white circle (◯) at the left end and the date and time of the black (●) at the right end. First, FIG. 3A shows the case where the lunar turn is at −T _{+ t} . At this time, T is equal to or later than the date, time, minute, second of T _{+ t} (hereinafter referred to as T ≦ T _{+ t} ).
Therefore, the year and month to be added to T is the same as the year and month of T _{+ t} .
Next, FIG. 3B shows the case where the lunar turn is between −T _{+ t} and T ₀ . At this time, if T is in the range of (ii), T ≦ T
_{+ t} and the year and month to be added to T are the same as T _{+ t} . When T is in the range of (i), the year and month to be added to T is one month before T _{+ t} . At this time T and T _{+ t}
Comparing the date, time, minute, and second, the T is ahead of the date, time, minute, second of T _{+ t} (hereinafter referred to as T> T _{+ t} ). Finally, FIG. 3 (c) shows when the lunar turn is between T ₀ and T _{+ t} . At this time, if T is in the range of (ii), T ≦ T _{+ t} , and the year / month to be added to T is the same as the year / month of T _{+ t} .
If there is T in the range of (i), the year and month to be added to T is one month before the year and month of T _{+ t} . At this time, T> T _{+ t} .

From the above, when T ≦ T _{+ t} , T is the same as the year and month of T _{+ t} , and when T> T _{+ t} , T is the year and month before the year and month of T _{+ t.} judge.

Next, the flow of the processing method of the present invention will be described with reference to FIG. First, the time T _{+ t} which plus t minutes to the time T ₀ which has received data from the partner device (step S3-1). Next, the time information T of the received data is compared with the date / time / minute / second of T _{+ t} (step S3-2). If the comparison result is T ≦ T _{+ t} , the year and month of T _{+ t} is added as it is (step S3-4), and the process is ended. The comparison result is T> T _{+ t}
If so, the year and month one month before the year T _{+ t} is added (step S3-3), and the T with the year and month is determined (step S3-5). The date when the date of T to which the date is added does not exist (for example, February 29, 1990 or 199).
If the date is November 31, 0), a year and month before the year and month added to T are added (step S3-6), and the date is judged again (step S3-5). If the date of T to which the date has been added is a date that actually exists, the processing ends.

[0012]

As described above, according to the present invention, by considering the error of the partner device and comparing it with the time in which the advance is taken into consideration, the year and month which is considered to be the most suitable for the date and time information having only date, time, minute and second is determined. There is an effect that can be added.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a block configuration diagram showing a configuration of a system to which an embodiment of the present invention is applied.

FIG. 3 is an explanatory diagram showing the operation of the embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the embodiment of the present invention.

[Explanation of symbols]

 1 time keeping means 2 comparing means 3 judging means

Claims (1)

[Claims] 1. A date processing device for adding year / month information to date / time information included in data received from a partner device of a different model, wherein date / time information T included in data received from the partner device.
Means for periodically maintaining the time indicated by ∘ within the range of time T ₀ ± t, which is delayed by a predetermined time with respect to the date and time T ₀ to which the date and time information at the time of data reception is added, The time T _{+ t} obtained by adding the above-mentioned predetermined time t to the date and time T ₀ at the time of receiving the data indicated by is obtained, and the date, time, minute, second of this time T _{+ t and} the date, time, minute, second of the time indicated by the time information T of the received data. When the comparison result of this comparing means is T ≦ T _{+ t} , the year / month of the date / time T _{+ t} to which the year / month information is added is added to the date / time indicated by the date / time information T. If the comparison result is T> T _{+ t} , the year and month that is one month before the date and time T _{+ t} to which the year and month information is added is added, and the date and time T when this year and month is added. If the date does not exist, the process of changing the date one month before the actual date will be repeated. Date processing apparatus being characterized in that a to means.