JPH03172971A - Time chart preparing system - Google Patents

Abstract

PURPOSE:To reduce the number of times of inputting or the like for the preparation of a time chart and to improve the reliability of its formation by inputting a logical operation expression written by a character string and a signal pattern indicating state information at each required time. CONSTITUTION:The time chart preparation system is constituted of an input device 10, an arithmetic processing unit 20, a storage device 30, and an output device 40. The unit 20 includes a logical operation part 1 for processing logical operation by using data and programs stored in the device 30, a pattern edition part 2 and a chart display part 3. Namely, the unit 20 extracts the programs and data from the device 30 at the time of inputting an operation expression and an operator from the device 10 to use them and displays the processing result on the screen of the device 40. Consequently, the input frequency and input data required for the preparation of the time chart can be reduced, the manhour of time chart preparation can also be reduced and the quality of the time charge can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for creating a time chart showing a signal pattern of status information at each time representing the operation of a digital logic circuit.

[Conventional technology]

In the conventional method of creating a time chart, an arithmetic processing unit receives input state information of a digital logic circuit at each time and calculates the same using a logical operation formula for signals.

[Problem to be solved by the invention]

As mentioned above, the conventional time chart creation method is configured to receive and input state information from an input device at each time, so this poses a big problem when the amount of state information at each time of a digital logic circuit is small. However, as the scale of digital logic circuits increases, the number of inputs to the arithmetic processing unit increases, and it takes a lot of time to create time charts, which are status information at each time that shows the operation of the circuit. Moreover, there is a problem in that the reliability is also lowered.

An object of the present invention is to provide a time chart creation method that solves the above problems.

[Means to solve the problem]

A first means of the time chart creation method according to the present invention is to input data through a predetermined operation instruction from an input device, process the results by making full use of a predetermined program and data, and store the results in a storage device, and display the results on an output device. The arithmetic processing unit that displays inputs a logical operation expression written as a character string and a signal pattern indicating the state information of the required signal at each time, analyzes the input operation expression, and performs a logical operation based on the signal pattern and operator. It has a logic operation unit that executes calculations, and a chart display unit that forms a signal pattern of the calculation result together with the input signal pattern into a time chart and displays it on a screen with an output device.

Further, the second means of the time chart creation method of the present invention is to input data from an input device according to a predetermined operation instruction, and store the results of processing by making full use of a predetermined program and data in a storage device. The arithmetic processing unit that displays the time-by-time status information of each signal on the screen receives the status information of each signal as a signal pattern and stores it in the storage device, and also analyzes the received arithmetic expression when it receives a logical expression written in a character string. a logical operation section that reads a required signal pattern from a storage device and executes a logical operation based on the arithmetic expression; and a chart display unit that calls the time chart from the time chart, forms it into a time chart, and displays it on the screen on the output device.

Further, one specific means of the arithmetic processing device in the second means includes a pattern editing section that edits the signal pattern and stores it in a storage device, and when the signal pattern is called, converts the pattern into a state value for each time. and a chart display section that graphically displays a time chart in screen coordinates.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing an embodiment of the present invention, and FIG. 3 is a configuration diagram showing an example of a logical operation formula and its signal pattern. .

As shown in FIG. 1, an input device 10. Arithmetic processing unit 20
．． A normal computer system composed of a storage device 30 and an output device 40''C' creates a time chart.The arithmetic processing unit 20 processes logic operations using data and programs stored in the storage device 30. It has a pattern editing section 2° and a chart display section 3. That is, when an arithmetic expression and an operator are input from the input device 10, the arithmetic processing device 20 takes out programs and data from the storage device 30, makes full use of them, and displays the processed results. is displayed on the screen on the output device 40.

The logical operation expression inputted from the input device 10 is displayed using the logical operators and signal codes shown in Table 1.

Table 1 *...Logical product, °...Logical negation, ten...
- OR, △...Exclusive OR, for example, when outputting the logical NOT of the AND of signals A and B as signal C, the arithmetic expression is as follows.

C= (A*B)' Next, the present invention will be described with reference to FIG. 2 together with FIGS. 1 and 3.

First, when the arithmetic processing unit 20 receives a logical operation expression written in a character string from the input device 10, it analyzes the signal names A-B and operators * and ° (step 101), and analyzes the patterns of each signal A-B. is read from the storage device 30 (step 102
). If there is no pattern record of signal A-B, input device 1
It will be read from 0. From the combination expression of the signal pattern and the operator, the arithmetic processing device 20 executes a logical operation (step 103), and forms the pattern of the signal C as a result pattern (104). When the steps up to step 104 are completed, the pattern editing section 2 edits the generated resultant pattern by, for example, abbreviation encoding and stores it in the storage device (step 105).

When the arithmetic processing unit receives a signal pattern display request signal from the input device (step 106), it successively outputs the edited signal pattern of the signals A-B-C stored in the storage device (step 107) L, signal pattern Next, the arithmetic processing device outputs the completed time chart to the screen output device 40 for image display (step 109).

The display request signal displays the signal pattern on the screen in a time chart for the signal name in the calculation formula, but if there is no signal pattern input or calculation result for the signal name, the input or the signal pattern is displayed on the screen. Immediately after the calculation result is obtained and stored in the storage device f30, the signal pattern is displayed as a time chart in steps 106 to 109 of the chart display section 3.

〔Effect of the invention〕

As explained above, the time chart creation method of the present invention involves inputting patterns using logical operation expressions.
This has the effect of reducing the number of inputs and the amount of input data for creating a time chart, contributing to a reduction in the number of man-hours for creating a time chart and to improving the quality of the time chart.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the time chart creation method of the present invention, Fig. 2 is a flow chart of an embodiment of the present invention, and Fig. 3 is a logical operation formula and time chart used in Fig. 2. It is a block diagram which shows an example. 1...Logic operation section, 2...Pattern editing section, 3...
- Chart display unit, 10... input device, 20... arithmetic processing device, 30... storage device, 40... output device.

Claims (1)

[Scope of Claims] 1. An arithmetic processing device that inputs data from an input device according to a predetermined operation instruction, processes the result using a predetermined program and data, stores it in a storage device, and displays the result on a screen on an output device, A logical operation unit that inputs a logical operation expression written in a character string and a signal pattern indicating time-by-time status information of a required signal, analyzes the input operation expression, and executes a logical operation using the signal pattern and the operator. and a chart display unit that forms a signal pattern of a calculation result together with the input signal pattern into a time chart and displays it on a screen on an output device. 2. An arithmetic processing unit inputs data according to predetermined operation instructions from an input device, stores the processed results using a predetermined program and data in a storage device, and displays the results on a screen on an output device. In addition to receiving status information as a signal pattern and storing it in a storage device, when a logical operation expression written in a character string is received, the received operation expression is analyzed, a required signal pattern is read out from the storage device, and the above operation expression is A logical operation unit that performs logical operations based on the calculation result, and a chart display that stores the signal pattern of the operation result in a storage device, and then retrieves the specified signal pattern from the storage device to form a time chart and displays it on the screen on an output device. A method for creating a time chart, comprising: 3. The arithmetic processing device according to claim 2 includes a pattern editing section that edits the signal pattern and stores it in the storage device, and when the signal pattern is called, converts the pattern into a state value for each time and converts the pattern into a time value in screen coordinates. 3. The time chart creation method according to claim 2, further comprising a chart display section that graphically displays the time chart as a chart.