JPS61133893A - Time apparatus - Google Patents

Abstract

PURPOSE:To enable the selection of correct time and a desired time, by a method wherein a desired time setting circuit is provided to enable the setting of desired time in such a manner that the operation of a time errors detecting is invalidated to keep the time from automatic correction. CONSTITUTION:A basic clock 101, an advance correction clock 102 and a delay correction clock 103 are outputted from a clock generation circuit 1 and any of the clocks are selected with a time counting clock selection circuit 4 to be inputted into a time counting circuit 5. Normally, the output of a standard time generation circuit 2 is compared with the output of the time counting circuit 5 by a time errors detecting circuit 3 and an indication signal is applied to the selection circuit 4 to output correct time information 105. Moreover, when a desired time setting circuit 6 is provided to apply desired time information 110 to the time counting circuit 5, an operation invalidation signal 111 is provided to the time errors detecting circuit 3 simultaneously to output the desired time information without being subjected to automatic correction.

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a time device that generates and supplies either accurate time information or arbitrary time information. [Prior art] This type of time device A conventional example is shown in FIG. ZF in the diagram!
2 is a standard time generation circuit, 3 is a time error detection circuit, and 4 is a clock selection circuit. Clock generation circuit I is a basic clock (total loss frequency QM) 101
A lead correction clock 1 (12) with a fixed percentage increase (total frequency aQr) of the basic tarock and a delay correction clock 103 with a fixed percentage decrease (total loss frequency Qs) of the basic tarlock 101 are generated.

The timekeeping clock selection circuit 4 selects one of the clocks generated by the clock generation circuit 1 according to the delay instruction signal lo8 or the advance instruction signal 109 from the time error detection circuit 3 and outputs it as the timekeeping clock 106. The timekeeping circuit 5 counts the timekeeping clock 106 and generates time information 105 when it reaches a specific time set in advance by time setting means (not shown). This time information 105 is used as the time information of the /stem. The time information 105 is also input to the time error detection circuit 3, where it is compared with standard time information 104 generated by the time generation circuit 2 receiving a standard time signal from a broadcasting station or the like.

The time error detection circuit 3 receives the time information 105 and the standard time information 104, detects whether the time is ahead or behind, and simultaneously calculates and corrects the error time αI (leading error time) and the lag α2 (lag error time). The time βI or β2 is determined by the following formula.

Leading error correction time βl = αIXQM/(QM-Qs) Lagging error correction time β2 = α2 XQM/ (QF QM
) For example, if the ratio between the basic clock and the correction clock is 1,
When the difference is 0% and the error time α is 1 second, the correction time is 10 seconds. The time error detection circuit 3 outputs a delay instruction signal 108 in the case of an advance error, and outputs an advance instruction signal 109 in the case of a delay error by 1 . . . during correction.

The timekeeping clock selection circuit 4 receives the instruction signal 108°10.
A delay correction clock 103 and a lead correction clock 102 are respectively selected by 9 and outputted as a timekeeping clock 106 for only the correction time. Basic clock 101 after correction time
Output.

[Problems to be solved]

However, in order to debug a newly developed program that must be started at a certain time, it is necessary to obtain the time at an arbitrary point in time, but conventional time devices do not always provide accurate information to the information processing system. Since it supplies time information, it has the disadvantage that it is rarely possible to obtain an arbitrary time.

[Means for solving problems]

The present invention has been made by focusing on the above-mentioned drawbacks, and when the information processing system needs arbitrary time information for program debugging etc., K is arbitrary time information or the information processing system needs arbitrary time information for program debugging etc. During normal operation, the time information is not corrected step by step at once, but is automatically corrected while maintaining the continuity of the time information, providing accurate time information that is synchronized with the standard time signal with high precision. The purpose of this invention is to provide a time device. Next, the time device AT of the present invention includes a clock generation circuit that generates a basic clock, a lead correction tarlock, and a delay correction clock, and a clock clock selection circuit that selects all of the clocks and outputs it as a clock clock. , a timekeeping circuit that counts a timekeeping clock and generates time information, and a standard time generation circuit that generates standard time information from the standard time signal, compares the time information with the standard time information and generates an advance or delay instruction signal. The present invention includes a time error detection circuit for detecting an arbitrary time, and an arbitrary time setting circuit for disabling the operation of the time error detection circuit by comparing standard time information and the arbitrary time information after setting the arbitrary time.

〔Example〕

FIG. 1 shows an embodiment of the present invention. In FIG. 1, the block with the same symbol number and the same signal as the symbol number in FIG. 2 is [-].

Therefore, the operation will be explained by limiting to the functions of the parts that are different between the first tooth and the second tooth.

A program FE that requires the arbitrary time setting circuit 61'' to be activated when the information processing system reaches a certain time.
It is used to obtain the time at any point when developing a new one.

For example, in normal operation when no arbitrary time is set in the arbitrary time setting circuit 6, more accurate time information is supplied from the constant clock circuit 5 to the information processing system. Assume that the time at that time is 13uooMoos. Therefore, K who debugs the program started by IOHOOMOO3 must wait until the next day, but such a situation is not allowed. So the current time is 13 ROO
Even if it is MOO8, 09H55M is set in arbitrary time setting circuit 6.
By setting OO8 and presetting the time in the clock circuit 5 through the arbitrary time information 110, the time information l'i13ROOMOO8 in the clock circuit 5 is changed to 09H55M.
It becomes OO8.

The time is 09H55HO as reset in the clock circuit 5.
O8 is clocked by the clock 106 based on the basic clock output from the clock clock selection circuit 4.
After H55MOO8, accurate arbitrary time information is supplied to the information processing system.

After 5 minutes have passed and the clock reaches 10HOOMOO8K, a newly developed program will be activated, allowing debugging to be performed at the correct time.

Also, while arbitrary time information is set in the arbitrary time setting circuit 6, the operating signal 1]1 is input to the time error detection circuit 39, and the time error detection circuit 3 detects the time error by comparing the standard time information and the arbitrary time information. operation is disabled.

That is, even if the time generation circuit 2 receives a standard time signal from a broadcasting station or the like and outputs the standard time information 104, it detects these errors and performs timekeeping in order to give priority to the arbitrary time information preset in the timekeeping circuit 5. The time information in the circuit 5 is not automatically corrected.

Next, when the debugging of the program developed by Kuranori is completed according to the scheduled schedule, the arbitrary time information stored in the arbitrary time setting circuit 6 is reset, standard time information is set instead, and the clock circuit 5 is preset. At the same time, the operation invalidation signal 111 is also reset.

〔Effect of the invention〕

Since the present invention has the above-described configuration, when arbitrary time information is required for debugging a program that requires the information processing unit to start at a fixed time, the arbitrary time information can also be used to debug a program. During normal operations other than backing, etc., time information is not corrected step by step at once, but is automatically corrected while maintaining time information continuity, providing accurate time information that is highly precisely synchronized with the standard time signal. Accurate time information can be obtained during normal operation, and arbitrary time information can be obtained during debugging, enabling effective debugging and meeting the needs of information processing 7 systems that require more accurate time information. There is an effect.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing a time device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional time device. 1...Clock generation circuit 2...Standard time generation circuit 3...Time error detection circuit 4...Timekeeping clock selection circuit 5...Timekeeping circuit 6...Arbitrary time setting circuit 1
01...Basic clock 102.1.03...Advance correction, delay correction clock 1
04...Standard time information 105...Time information 106
...Time clock 110...Arbitrary time information @ 1
Decoy number 2

Claims (1)

[Claims] A clock generation circuit that generates a basic clock, a lead correction clock, and a delay correction clock; a timekeeping clock selection circuit that selects either the basic clock or the lead correction clock and outputs it as a timekeeping clock; and a timekeeping clock selection circuit that counts the timekeeping clock and generates time information. a standard time generation circuit that generates standard time information from a standard time signal; a time error detection circuit that compares the time information with the standard time information and generates an advance or lag instruction signal; and an arbitrary time setting. The rest of the time device includes an arbitrary time setting circuit that disables a time error detection circuit based on a comparison between standard time information and the arbitrary time information.