JPS5825289B2 - Timekeeping method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timekeeping method for collectively measuring time for each line in a communication processing device having a plurality of lines.

Conventional timekeeping methods set the time count for each line in a counter provided for each line, update this with a basic clock signal, and generate an interrupt to the control unit when the counter overflows, or a fixed value. This method uses a monostable multivibrator consisting of a resistor and a capacitor.

In these systems, the timekeeping circuit is configured one-to-one with the line, so there is a drawback that the timekeeping circuit must be added as the number of lines increases.

Furthermore, since the frequency of the basic clock that updates the count and the values of the resistors and capacitors are fixed, there is a drawback that the time range for which the clock is measured is limited.

This invention was made to solve the above-mentioned drawbacks of the conventional timekeeping method, and the timekeeping information for each line is collectively stored in a storage device (hereinafter referred to as memory), and the timekeeping for each line is performed by one This method uses a clock circuit, and even if the number of lines increases, the number of clock circuits does not increase because it only secures memory storage area.In addition, many types of clock time can be specified in the clock information, and the clock time This provides a timekeeping method that can expand its range compared to conventional methods.

Hereinafter, an embodiment of the timing system of the present invention will be explained based on the drawings and planes. Fig. 1 is a block diagram showing one embodiment. In the figure, 1 is a timing circuit, and 2 is a clock information for each line. The memo 1 bar 3 to be stored is a common control section for the timekeeping circuit 1 and other functional modules of the communication processing device (not shown).

4 in the memory 2 is line clock information, and is composed of a clock type code 5 and a clock count 6. In this case, the clock types are no operation, 0.1 second hand time, 1 second hand time, and time measurement end interrupt. The four types of wait codes are shown in Table 1 below.

1st table Timekeeping type Code no operation 00 0.1 second hand time 01 1 second hand time 10 Waiting for timekeeping end interrupt 11 On the other hand, 7 in the above timekeeping circuit 1 is a basic clock signal, and this basic clock signal 7 is a timekeeping signal for each line. It is designed to be installed in the address counter 8.

This address counter 8 is for giving a line number for timekeeping and specifying the address of the memory where the timekeeping information 4 corresponding to the line number is stored, and is composed of a binary counter.

Further, the type code 5 of the timekeeping information 4 read out from the memory 2 is read out and identified by the timekeeping information updating circuit 9, and according to the identified type code, the timekeeping information updating circuit 9 is adapted to update the clock count 6.

Also, the updated information from the clock information update circuit 9 is sent to the zero determination circuit 1.
As a result, the zero determination circuit 10 determines whether or not the updated time count 6 is zero.

The result of determining the clock count 6 by this zero determination circuit 10 is sent to a clock termination line number circuit 11 and a clock termination instruction circuit 12 comprised of a flip-flop circuit. As a result of determining count 6, if clock count 6 is zero, zero determination circuit 1
0 causes the clock end line number 11 to hold that line number,
The zero determination circuit 10 sets the time measurement end instruction circuit 12, and the time measurement circuit 1 instructs the common control unit 3.

FIG. 2 shows the time relationship between accessing the memory 2 of the clock circuit 1 and reading and writing clock information 4 corresponding to the line, and reference numeral 13 in the figure indicates the clock time of line number 1. .

Further, 14 is the read timing of the clock information 4 corresponding to N lines stored in the memory 2 of the line N, and j+
Rl t2Rl...tNR is the read time of the clock information 4 of each line, 15 is the write timing of the clock information 4, and tlw, 12w, . . . song tNW indicates the write time.

Now, clock information 4 is written from the common control unit 3 in FIG. The time measurement information 4 for the reading time t1R9t2R9 in FIG.
... is read out to tNR, the timekeeping type code 5 is identified by the timekeeping information update circuit 9, and if no operation is specified, the timekeeping proceeds to the next line, and if the 0.1 second hand time is specified, the timekeeping count is set to 6. If the 1-second hand time is specified, it is determined whether or not it is the clocked time of that line. If it is the clocked time, the clock count 6 is updated, and if it is not the clocked time, the next line is timed.

As a result of updating the clock count 6 and determining the clock count 6 by the zero determination circuit 10, if it is not zero, write time tIWtt2W in FIG. 2? ...Stores tNW at the same address in memory 2.

Further, if the timekeeping type code 5 is a specification for waiting for an end interrupt or is zero as determined by the zero determination circuit 10, if the timekeeping end line number circuit 11 is vacant, the timekeeping end line number is transferred to that circuit, and the timekeeping end instruction circuit 12 and common control unit 3.
Instruct to.

Set the no-operation code to the type code 5 of the clock information 4 for this line, and write the write time shown in Figure 2.
tWp "2Wt... Store tNW at the same address in memory 2.

Also, if the timing end line number circuit 11 is not vacant,
Set the time measurement end interrupt wait code to the type code 5 of the time measurement information 4, store it in the memory 2, and read it at the next read time (0
, 1 second later), and the above procedure is repeated until the timing end line number circuit 11 becomes vacant.

In this way, the clock information 4 of each line is read out every 0.1 seconds, and time measurement is performed according to a predetermined procedure.

It should be noted that although the above description describes a timekeeping method in a communication processing device, the present invention is not limited to this, but the system management section operates functional modules (without distinction of hardware and software) in parallel, and each functional module Any system required for timekeeping can also be applied.

As described above, according to the present invention, the communication processing device stores the timing information of each line in the memory at once, and the number of lines increases by measuring the time of multiple lines with one timing circuit. However, there is no need to add a clock circuit by simply securing a memory area for storing clock information.

Furthermore, since the time measurement type can be specified within the time measurement information, the range of time measurement can be expanded.

゛

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the timekeeping method of the present invention, and FIG. 2 is a diagram showing time intervals of the above-mentioned timekeeping method. 1...Clock circuit, 2...Memory, 3.
... Common control unit, 8 ... Address counter, 9 ... Timing information update circuit, 10 ...
・Zero judgment circuit, 11... Time counting end line number circuit, 12... Time counting end instruction circuit.

Claims (1)

[Claims] 1. In a timekeeping circuit of a communication processing device having multiple lines, timekeeping information consisting of a timekeeping time type code and a timekeeping count corresponding to each line is stored in a storage device all at once from a control unit, and the timekeeping information in the timekeeping circuit is stored in a storage device. The update circuit identifies the type code of the timekeeping information read from the storage device at fixed time intervals, and after this identification, the timekeeping information update circuit updates the timekeeping count at time intervals according to the code, and the result of this update is The zero judgment circuit in the above timekeeping circuit makes a judgment, and when the judgment result shows that the time count is zero, the judgment circuit causes the timekeeping end line number circuit in the above timekeeping circuit to hold the line number, and also issues an instruction to end timekeeping and the line. A timekeeping method in which a number is sent to a control unit, and if the time count is not zero, timekeeping information is stored at the same address in the storage device, and timekeeping is performed for all lines.