JP3017362B2 - Data processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing apparatus in which an upper input device and a lower input device are connected on one line as input devices. Generally, in a data processing device such as a personal computer, a keyboard as an input device is selectively connectable so that an optimal input unit can be selected according to a use purpose of a user. An optional numeric keyboard for numeric input is connected as the lower input device of the alphabet input keyboard as the upper input device, and input data from the lower input device is input from the keyboard as the upper input device. The processing device is notified as data.

In such a data processing device, when a data error occurs, it is desirable to notify the processing device of an abnormal location and take efficient recovery measures.

[0003]

2. Description of the Related Art Conventionally, a keyboard as a high-order input device and a numeric keyboard as a low-order input device are respectively connected on one line as input devices, and input data from the numeric keyboard is input to the processor as input from the keyboard. In the data processing device to transmit, the data transmitted from the numeric keypad to the keyboard is sent to the processing device as it is, and even when a data error such as a parity error occurs, the keyboard ignores the error and sends it directly to the processing device. Sending.

[0004] On the other hand, when data is received from the numeric keypad, whether or not a data error has occurred is detected. When the occurrence of a data error is detected, transmission of the data to the processing device is stopped. Is also considered.

[0005]

However, in such a conventional data processing device, when data received by the keyboard is transmitted to the processing device as it is, ignoring errors, error data is input. So
The processing unit determines that an error has occurred in the data, but whether the error occurred during the transmission process from the keyboard,
It was not known whether an error occurred during the transmission process from the numeric keypad to the keyboard, and the location where the error occurred could not be identified.

In the case where transmission of data to the processing device is stopped when an error occurs in data received from the numeric keypad by the keyboard, there is no data input to the processing device, and from the viewpoint of the processing device, It is not possible to determine whether the error is due to a data transfer process from the numeric keypad to the keyboard or an error in the keyboard itself.

As a result, in each case, there is a problem that it takes time to take measures for error recovery. The present invention has been made in view of such a conventional problem, and an object of the present invention is to specify a location where an error has occurred easily and efficiently perform a recovery measure.

[0008]

FIG. 1 is a diagram illustrating the principle of the present invention. The present invention relates to a processing device 3 for processing data.
And an input device 13 connected to the processing device 3. The input device 13 is a data processing device in which the upper input device 5 and the lower input device 6 are connected on one line 4.
Error detection means 10A for detecting an error in a data block transmitted from the lower input device 6 to the upper input device 5
And a data generator 10B for generating a specific data block for notifying that an error has occurred when the error detector 10A detects an error.

[0009]

According to the data processing apparatus of the present invention having such a configuration, when an upper-level input device receives a data block from a lower-level input device, the error detection means detects whether or not an error has occurred. When there is no error, the data block is directly transferred to the processing device.
Send the error data block to the processing device.

Therefore, on the processing device side, the location where the error has occurred can be easily specified, and recovery measures such as replacement of the higher-level input device or cable can be efficiently performed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 2 to 5 are views showing one embodiment of the present invention.
First, the configuration will be described. In FIG. 2, reference numeral 1 denotes a personal computer as a computer main body, 2 denotes a display device connected to the personal computer 1 for displaying data, and the personal computer 1 and the display device 2 Of the processing device 3 for performing the above processing.

A keyboard 5 is connected to the personal computer 1 via a line 4 as an upper input device, and a keyboard 6 is connected to the keyboard 5 via a line 4 as a lower input device. Note that the keyboard 5 and the numeric keyboard 6 constitute the input device 13 as a whole, and the input device 13 and the processing device 3 constitute a data processing device as a whole.

Next, the internal structure of the keyboard 5 is shown in FIG. In FIG. 3, reference numeral 7 denotes a key matrix circuit;
The key matrix circuit 7 generates X, Y address signals corresponding to the pressed input key 8. The X and Y address signals generated by the key matrix circuit 7 are decoded by the decoder 9 and converted into ASCII codes or the like, and then output to the CPU 10. The CPU 10 converts the signal from the decoder 9 into a predetermined data block from the data, and
To the personal computer 1 via.

The data block transmitted from the numeric keypad 6 is transmitted to the CPU 10 via the transceiver 12.
If there is no error, the CPU 10 transmits the data block as it is to the personal computer 1 via the transceiver 11, and if an error occurs, the CPU 10 discards the data block and notifies that the error has occurred instead. A specific data block to be notified is created and transmitted to the personal computer 1 via the transceiver 11.

That is, the CPU 10 controls each part, and when the error detecting means 10A for detecting an error of the data block transmitted from the numeric keypad 6 and the error detecting means 10A detect the error, it is determined that the error has occurred. It has a function as data generating means 10B for generating a specific data block to be notified. Here, an example of a data block is shown in FIG.

In FIG. 4, a data block includes 8-bit data indicating a device type such as a keyboard, a barcode scanner, and a card reader, and a status indicating a status including a shift bit, a control bit, a repeat bit, and the like.
It is composed of bit data and 8-bit data indicating a key address from X'80 'to X'FF'.

Therefore, the creation of a specific data block notifying that an error has occurred uses, for example, the key address X'00 'among the free key addresses X'7F' to X'00 '. Referring again to FIG. 2, when the personal computer 1 receives the normal data block, the personal computer 1 displays the character corresponding to the key address on the screen of the display device 2. When a specific data block having the key address X'00 'is input, Has a function as an error data block detecting means 3A for detecting this, and displays on the display device 2 as a notifying means that an error has occurred in the data from the ten keyboard 6 to the keyboard 5.

Next, the operation will be described. FIG. 5 is a flowchart for explaining the operation. In FIG. 5, first, in step S1, it is determined whether the data is from the input key 8 or not.
The PU 10 discriminates and if the data is from the input key 8, it generates a data block in step S2 and sends the data to the transceiver 11 in step S3.

If the data is not from the input key 8, that is, if it is from the numeric keypad 6, it is determined in step S4 whether there is an error such as a parity error in the data. Step S3
Then, the data block is sent to the transceiver 11 as it is. When an error occurs, the data block is skipped in step S5, and a specific data block (X'00 ') notifying that the error has occurred is generated instead.
In step S3, the data block is transmitted to the transceiver 11.

When this data block is input to the personal computer 1, the personal computer 1 detects that an error has occurred, and displays on the display device 2 a point where the data from the ten keyboard 6 to the keyboard 5 has an error. . As described above, when an error occurs in the transmission data from the numeric keypad 6 to the keyboard 5, the error is notified to the processing device 3, so that the abnormal part can be easily specified. When there is an abnormality in the keyboard 15 itself, an error check such as a parity error is performed in the personal computer 1. Therefore, when an error occurs in the keyboard 5, the error is displayed on the display device 2.

As described above, when an error occurs, data is input to the processing device 3, and it is possible to easily identify an abnormal portion of the ten keyboard 6 or the keyboard 5, and the keyboard 5 and the Recovery measures such as replacement of the line 4 can be efficiently performed.

[0022]

As described above, according to the present invention, when a data error occurs in an input device in which a keyboard and a numeric keypad are connected on one line, where the error occurs, Since it is possible to easily specify the recovery measures, recovery measures can be taken efficiently.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is an overall configuration diagram showing one embodiment of the present invention.

FIG. 3 is an internal configuration diagram of a keyboard.

FIG. 4 is a diagram showing an example of a data block.

FIG. 5 is a flowchart illustrating an operation.

[Explanation of symbols]

 1: Personal computer 1A: Data block detecting means 2: Display device (notifying means) 3: Processing device 4: Line 5: Keyboard (upper input device) 6: Ten keyboard (lower input device) 7: Key matrix circuit 8: Input Key 9: Decoder 10: CPU 10A: Error detecting means 10B: Data generating means 11: Transceiver 12: Receiver 13: Input device 14: Data processing device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 11/00 G06F 3/02-3/023

Claims (3)

(57) [Claims] 1. A processing device (3) for processing data and an input device (13) connected to the processing device (3). In a data processing device in which an input device (5) and a lower input device (6) are connected, an error detection for detecting an error in a data block transmitted from the lower input device (6) to the upper input device (5). Means (10A), and when the error detecting means (10A) detects an error,
A data processing device comprising: a data generating means (10B) for generating a specific data block for notifying that an error has occurred. 2. The data processing device according to claim 1, wherein
The data processing device according to claim 1, wherein the lower input device (6) is a numeric keyboard, and the upper input device (5) is a keyboard. 3. The data processing apparatus according to claim 1, wherein
When a specific data block is input from the higher-level input device (5) into the processing device (3), a data block detecting means (1A) for detecting the specific data block
And a notifying means (2) for notifying that there is an error in the data block from the lower-order input device.