JPS6252325B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an input device for a word processor, and more particularly to checking for abnormalities in the input device.

FIG. 1 shows the general configuration of a word processor. Reference numeral 1 indicates a main body, and the main body 1 houses a CRT 2 for displaying status and a flexible disk device 4 for driving a flexible medium (not shown) as a storage medium.

Furthermore, an input device 3 is arranged at the front of the main body 1, allowing the operator to input characters and the like.

FIG. 2 shows the configuration as seen from the wiring system, and shows that the main control circuit 5 and each device are connected by cables 6, 7, and 8.

The main control circuit 5 shown in FIG. 2 will be explained using FIG. 3. 10 is a program storage type calculation unit (hereinafter referred to as CPU); 11 is a boot ROM made of non-volatile memory and has a program to be executed when the power is turned on; and 12 is a boot ROM for storing a program that executes the function of a document editing device. 14 is a program memory; 14 is a character generator that stores dot data representing kanji in a dot matrix with kanji codes as an index; 15 is a character generator;
This is a controller that reads dot data from the character generator 14 in accordance with instructions from the CPU 10 and generates a signal to operate the CRT 2.
13 is a flexible disk control circuit (FDC) that controls the flexible disk device 4 related to the temporary storage section. The circuits are connected to each other by a bus line 20.

In the above configuration, when the power is turned on, the CPU 10 executes the program stored in the boot ROM 11, which is an initial program loader. Generally, such a program transfers data stored on a flexible disk (not shown) set in the flexible disk device 4 to the program memory 12. When this transfer is completed, the CPU 10 branches control to the start address of the program as a document editing device stored in the program memory 12. As a result, according to the operation key input on the input device 3, the key input CE16 is sent to the CRT via the CPU 10.
It becomes possible to display characters on 2, edit documents, etc.

In the configuration described above, the input device 3 will be mainly considered.

In the case of a word processor like the one shown in FIG. 1, each function of the main body 1 is normally executed sequentially in response to an external interactive instruction.
The external instruction is given as on/off information for a group of keys of the input device. Therefore, the role of the input device is quite large in ensuring that the functions of the entire system function properly. However, in normal systems, the input from the input device is not checked immediately after the power is turned on, and when the input from the outside is required, it is possible to determine whether the input device is operating normally or abnormally by checking the input status. It is confirmed. In other words, this means that due to an abnormality in the input device, the system operates and the processing executed after power is turned on may be all wasted, placing a greater burden on the operator. Become.

An object of the present invention is to provide an input device that can prevent a system including the input device from going down due to an abnormality in the input device by first performing various checks on the input device after power is turned on.

The present invention provides a first check means that checks whether there is a short circuit in all the key switches, which operates when the power is turned on, to automatically check whether there is an abnormality in turning off the switches, and to input keys related to data storage. A second check means for instructing the operation and checking the quality of the input is provided so that it is possible to check in advance whether the processed (input) data cannot be stored, and the effect of the check is displayed on the display means. This makes it possible to prevent the input device from being used abnormally and causing the system to go down in the middle.

Next, examples will be described.

FIG. 4 is a block diagram of a word processor showing an embodiment of the present invention, which includes a main system section 25, an input device 27, and a cable 2 connecting them.
Consists of 6. Among these, the input device 27 detects on/off information of the key switches arranged in a matrix, processes the signals, and transfers the signals to the main system section 25, thereby controlling the system from the outside. Further, the main body system section 25 selects and executes a plurality of functions by inputting data from the input device 27.

The operation of this embodiment will be explained based on the flowchart shown in FIG.

First, the CPU 10 included in the main body system section 25
Each process performed will be explained.

Process 30 is a boot that performs initial processing of the system.
Start ROM11.

Process 31 is a memory check, which checks the program memory 12 which is the basis of the operating program (related to the operation of the CPU 10) of this system.

The process 32 is performed by the input device 27, which is a feature of this embodiment.
This is a check process.

In process 33, the program is stored from the flexible disk device 4 into the program memory 12.

Processing 34 indicates a step in which data input from input device 27 is processed based on the program on program memory 12.

Process 35 indicates a process in which the data processed in process 34 is stored on a flexible medium through the flexible disk device 4.

Next, the characteristics and importance of the process 32 will be described in the flow shown in FIG.

Each process in FIG.
Flows in the order of 1, 32, 33, 34, 35. Particularly regarding processes 33, 34, and 35, the start of each process is instructed by key input from the input device 27. Therefore, assuming that process 32 is not performed, discovering an abnormality in the input device 27 after entering processes 33, 34, and 35 will result in wasted time from when the power is turned on until the process starts. Also, especially
Process 3 after completion of process 34 that requires the most time
The inability to use the processed data storage instruction key of the input device 27 in step 5 places a considerable burden on the operator.

For the above-mentioned reasons, it can be seen that the input device check processing 32 is of great importance from the perspective of the entire system.

Next, the process 32 will be explained in accordance with FIG. 6, which is further divided into parts.

This input device check process begins with process 36.

In the process 36, in the input device 27 which obtains the on/off information of the key group and uses it as input data, first check for a short circuit in the key switch, and if there is a short circuit, do not proceed to the next process and display an abnormality to the operator. . If there is no short circuit, the process moves to the next check process 37.

Processing 37 is to check whether key input is actually possible or not, and the operator is asked to perform the minimum input required for the system to function normally, as preset in accordance with instructions from the main body system section 25. Have the key input. Here, the biggest risk is the inability to store processed data, and it is most effective to perform a key input check regarding this.

If the input device 27 passes through this process 32, it is determined that the input device 27 is normal, and the process proceeds to the next process 33, in which the entire system is operated. Furthermore, if an abnormality is discovered, it is possible to handle the abnormality before the system operation (process 33 and subsequent steps) starts.

According to this embodiment, when the power is turned on, the input device 27
Since the system performs various checks, it is possible to prevent the system from going down due to an abnormality in the input device after the system operation has progressed, and there is no need to place an excessive burden on the operator due to an abnormality in the input device 27. From a surface perspective, the effect is great.

As described above, the present invention can automatically check whether there is an abnormality due to a short circuit in all key switches when the power is turned on, and if there is an abnormality in the ON state (input is not possible), the operator can be instructed to select the key switch related to data storage. Since the input device can be operated to check the quality of the input and the results of these checks can be displayed, processing data can be prevented from becoming invalid due to system failure caused by using the input device with abnormal conditions. This can reduce the burden on the operator.

[Brief explanation of the drawing]

1 to 3 show a conventional word processor; FIG. 1 is a perspective view of the entire word processor, FIG. 2 is a block diagram of the overall configuration, and FIG. 3 is a block diagram of the main control circuit. 4 to 6 show a word processor according to the present invention, with FIG. 4 being a block diagram of the overall configuration, and FIGS. 5 and 6 being operational flowcharts. 10...CPU, 11...Boot ROM, 12...
...Program memory, 25...Main system section,
27...Input device.

Claims (1)

[Claims] 1 In a word processor that executes document editing processing based on an input signal created by detecting the on/off state of a key switch, the word processor automatically detects whether there is a short circuit for all key switches that operate when the power is turned on. A first checking means for checking, and a second checking means for instructing key input operations related to data storage and checking the quality of the input.
and a display means for displaying when a short circuit of the key switch is detected by the first checking means and/or when an input failure of the key switch is detected by the second checking means. An input device for a word processor, characterized in that: