JPH0535545A - Display device - Google Patents

Abstract

PURPOSE:To display plural types of errors and also to simultaneously display plural combinations of errors by giving one bit to each of (nX4) types of errors and performing the hexadecimal display with an n-digit/7-segment display device. CONSTITUTION:One bit is given to each of (nX4) types of errors, and the hexadecimal display is carried out for each n-digit display element 6. Thus plural combinations of errors occurring at an equipment 10 are displayed. In other words, the hexadecimal display is converted into a binary number and therefore can be shown in four bits. Then the propriety of a single error corresponds to each of four bits. Therefore the propriety of each of four types of errors and the combinations of four types of errors can be displayed in four bits. Furthermore the elements 6 are prepared in number equal to n digits and the hexadecimal display is carried out for each element 6. As a result, the propriety of nX4 types of errors and the combinations of these errors can be displayed in all.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device capable of displaying an error of various devices such as electronic devices.

[0002]

2. Description of the Related Art As a conventional display device provided in, for example, an electronic device, there is a display device including a so-called 7-segment display device provided in a front panel of the electronic device.

Here, when an error occurs in an electronic device having a display device including, for example, seven or more 7-segment displays, conventionally, for example, "Error 15" is displayed by each 7-segment display of this display device. In many cases, the error number such as is displayed, thereby displaying what kind of error is occurring. Specifically, for example, as shown in FIG.
The English character "Error" and the numeral "15" are simultaneously displayed on the segment display.

Usually, the contents of an error corresponding to the error number are described in, for example, the manual of the electronic device. Therefore, the error number displayed on the display device and the manual, etc. It is possible to recognize the error type of the electronic device by associating it with the error content number described in.

[0005]

By the way, in an electronic device having a display device consisting of the above 7-segment display device, if there is only one type of error currently occurring,
Although there is no problem with the error display as shown in FIG. 6 described above, for example, when a plurality of types of errors occur at the same time, the error display of the 7-segment display cannot handle them. In this case, for example, unless the errors are sequentially displayed in a time-sharing manner, the user cannot be instructed of a plurality of types of errors.

In order to simultaneously display a plurality of types of errors, it is possible to add an error number to each combination of each type of error. However, in this case, it becomes necessary to prepare the numbers of all the combinations of the items of each error.

For example, in an electronic device having a so-called self-diagnosis function capable of checking various keys on the front panel of the electronic device, the display device may be, for example, a dot matrix type EL (electroluminescence) device. ) Display device, LCD (liquid crystal display), FL tube (fluorescent display tube), CRT (cathode ray tube)
, Etc., the result of the error check can be displayed by, for example, a character image, etc., but when the above-described 7-segment display is used as the display device, the quality of many keys is displayed. Is difficult.

Therefore, the present invention has been proposed in view of the above circumstances, and, for example, in an electronic device or the like having a display device including a 7-segment display, for example, a plurality of types of errors occur simultaneously. It is an object of the present invention to provide a display device capable of displaying all of these errors even in the case where there are cases.

[0009]

The display device of the present invention has been proposed in order to achieve the above-mentioned object, and is a display device for displaying an error of a device by display elements for n digits. Therefore, by giving 1 bit to each of the n × 4 types of errors and displaying each of the n-digit display elements in hexadecimal, it is possible to display a combination of a plurality of types of errors occurring in the device. It was done.

[0010]

According to the display device of the present invention, the hexadecimal display can be converted into a binary number and can be represented by 4 bits, and each bit of the 4 bits is associated with one error quality.
Therefore, it is possible to display the combination of four types of errors together with the quality of each of the four types of errors with these 4 bits. In addition, by preparing display elements for n digits and displaying each of the display elements for each of the n digits in hexadecimal, it is possible to display the quality of the error of n × 4 types and the combination of each error as a whole. it can.

[0011]

Embodiments of the display device of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the display device of the present embodiment has a display element for n digits (for example, a 7-segment display 6).
Is a display device for displaying an error of, for example, the electronic device 10 and the like, 1 bit is given to each of n × 4 types of errors, and each 7-segment display 6 of n digits is displayed in hexadecimal. Accordingly, the electronic device 10
It is possible to display a combination of a plurality of types of errors occurring in.

In this embodiment, a video tape recorder (VTR) is taken as an example of the electronic device 10. In FIG. 1, an electronic device (VTR) 10
When various keys (eg, play key, stop key, fast-forward key, rewind key, etc.) 1 on the front panel are pressed, signals from the key 1 are sent to the main CPU 3. The main CPU 3 determines which one of the various keys 1 has been pressed.

At this time, it may be impossible to determine whether or not the key is pressed in the main CPU 3 although the arbitrary key is actually pressed. This occurs, for example, because the key itself is out of order or the communication path in the electronic device 10 is abnormal.

Further, various sensors 2 such as a sensor for detecting the rotation of the head drum and a sensor for detecting the dew condensation on the head drum are attached to the electronic device 10. The signal from the sensor 2 is also sent to the main CPU 3. Also at this time, similarly to the case of the key 1, in the main CPU 3, each sensor 2
There is a case that it is not possible to discriminate even though the abnormality is detected.

Further, the electronic device 10 includes a peripheral CPU.
4 is also provided, and an interrupt signal from the peripheral CPU 4 is also sent to the main CPU 3. Also at this time, as in the case of the key 1 and the sensor 2, the main CPU 3
There is a case where the discrimination cannot be made even though there is an interrupt signal from each peripheral CPU 4.

When various kinds of errors as described above occur, the main CPU 3 concerned causes the 7-segment display 6 to operate.
A signal for causing the 7-segment display 6 to perform hexadecimal display as described later is generated for the segment driver 5 that drives the.

Here, the hexadecimal display displayed on one 7-segment display 6 can be represented by 4 bits by converting it into a binary number.

In the embodiment of the present invention, each of the 4 bits of the binary number expression is associated with one pass / fail of a function (whether or not there is an error). Therefore, it is possible to display the error of four kinds of functions with the 4 bits of the binary number expression. For example, when any one of the four bits of the binary number expression is "1", it is known that there is no error in the function corresponding to the bit (that is, "good"), and the bit is reversed to "0". In the case of ", it can be understood that there is an error in the function corresponding to the bit (that is," no ").

Specifically, as shown in FIG. 2, for example, in the 4 bits of the binary number representation, the 0th bit indicates the quality of the function of the stop key, for example, and the 1st bit indicates the play key, for example. It is assumed that the quality of the function is indicated, the second bit indicates the quality of the function of the FF (fast forward) key, and the third bit indicates the quality of the function of the REW (rewind) key. In the case of FIG. 2, for example, when the hexadecimal display on the 7-segment display 6 is "E", that is, "1110" in binary notation, the 0th bit which is a "0" bit is displayed. The function of the stop key corresponding to the bit of is an error (defective). Also, for example, a 7-segment display 6
The hexadecimal display in "d" is "110" in binary notation.
If it is "1", the function of the play key corresponding to the first bit, which is the "0" bit, is an error (defective).
The hexadecimal display on the segment display 6 is "b", that is, 2
If it is "1011" in decimal notation, it is "0"
The FF corresponding to the second bit, which is the bit of
The key function is an error (defective). 7 above
The hexadecimal display on the segment display 6 is "7", that is, 2
If it is "0111" in decimal notation, it is "0"
The RE corresponding to the third bit, which is the bit
The function of the W key is an error (defective). Although not described, other hexadecimal numbers can be similarly used for quality judgment.

Further, for example, as shown in FIG.
In the 4 bits of the decimal number representation, the 0th bit indicates, for example, information indicating whether or not dew condensation has occurred on the head drum, and the 1st bit indicates, for example, whether or not the head drum is defective in rotation. The bit is, for example, the main C in FIG.
It is assumed that whether or not there is a communication failure between the PU 3 and the peripheral CPU 4 indicates that the third bit indicates, for example, whether or not an interrupt has come. In the case of FIG. 3, for example, when the hexadecimal display on the 7-segment display 6 is "E" (that is, "1110" in binary notation), it corresponds to the 0th bit. Indicates that an error has occurred (condensation has occurred on the head drum). The following is similar to the example of FIG. 2 described above.

Further, in the display device of the present embodiment, it is possible to display the occurrence of each one of the various errors as described above, and to display the binary number 4 as described above.
It is also possible to indicate a plurality of combinations of the above four kinds of errors with bits. That is, it is possible to display 16 types of error combinations with one 7-segment display.

To be more specific, with reference to the example of FIG. 2 described above, in the case of FIG. 2, for example, the hexadecimal display on the 7-segment display 6 is "9", that is, "2" in binary notation. When it is 1001 ", it is understood that both the function of the play key and the function of the FF key corresponding to the second and first bits of the" 0 "are in error (defective). .. Further, for example, when the hexadecimal display on the 7-segment display 6 is "0", that is, "0000" in the binary number representation, the 0th, 1st, 2nd , The stop key corresponding to the third bit, the play key, the FF key,
All the functions of the REW key are in error (defective). Similarly, it is possible to know the error combination of each key by the binary expression corresponding to each hexadecimal display.

The display of the combination of the errors is the same in the example of FIG. 3, and the description thereof will be omitted.

Further, in the display device of this embodiment, for example, n pieces of the 7-segment display 6 are prepared, and the n pieces of 7 pieces are displayed.
When n segments are displayed on the segment display, it is possible to display each of the four types of errors and their combination as described above for each of the n digits.

The above VTR exemplified in this embodiment.
Such an electronic device usually has a 7-segment display 6 for 8 digits for displaying hours, minutes, seconds, and frames in order to display a time code, for example. Therefore, in a VTR or the like having such an 8-digit 7-segment display 6, for example, 8 × 4 = 3
The quality of two types of functions (key functions, etc.) can be displayed. When displaying the errors of those combinations, 16 combinations of errors can be displayed per one 7-segment display. Therefore, for example, if all of the 8-digit 7-segment displays 6 are used, it is possible to display an extremely large number of error combinations.

In the example of FIG. 3 described above, four types of dew condensation, drum rotation, communication between peripheral CPUs, and interrupts are given, but in addition to this, for example, in and out points at the time of editing are set. The error display regarding time, the rotation of the reel motor, the operation within a predetermined time, the recording in the REC mode, the error display such as recording, and the like can also be mentioned.

As described above, in the display device of the present embodiment, 1 bit is given to each of n × 4 types of errors, and each 7-segment display 6 of n digits is displayed in hexadecimal. Even when a plurality of types of errors occur simultaneously with the display of a plurality of types of errors, it is possible to display a combination of all of those errors. For example, by preparing the 7-segment display 6 for 8 digits, it is possible to display 8 × 4 types of errors and also display a combination of each error.

In other words, according to the display device of the present embodiment, when a plurality of abnormal blocks (constituent elements) simultaneously occur in the electronic device 10 due to the information from the sensors 2 and the peripheral CPU 4, the above is described. Without giving priority to those error displays like time division display,
It is possible to display it as it is and inform the user.

Here, FIG. 4 shows a flowchart of the error check in the self-diagnosis mode of the key function in the configuration of FIG. Note that this flowchart is based on VT
An example of performing an error check of each key 1 in a self-diagnosis mode that indicates whether or not a signal to that effect is sent to the main CPU 3 when various keys 1 provided on the R front panel are pressed Shows. Therefore, all the bits in the binary number expression corresponding to the keys other than the pressed key are set to "0", which is different from the error display of the key function described in FIG. 2 above.

In FIG. 4, in step S1, it is determined whether or not the play key is pressed. If No (the play key is not pressed), the process proceeds to step S4, and Yes (the play key is pressed). If so), the process proceeds to step S2. In step S2, the bit corresponding to the play key, that is, the first bit of the binary number expression is set to "1", and in step S3, the hexadecimal display "2" corresponding to the four bits ("0010") of the binary number expression.
Is displayed on the 7-segment display 6. Next, when step S3 is completed and at step S1 above, N
When it becomes o, the process proceeds to step S4. The step S4
Then, it is judged whether or not the stop key is pressed,
If No (the key is not pressed), proceed to the next step (not shown) (for example, the process of checking the FF key), and if Yes (the key is pressed), the 7 segments as described above. The display 6 is caused to display. For example, when the stop key is checked and the result is “good”, 4 bits of binary number (“00
The hexadecimal display "1" corresponding to "01") is displayed on the 7-segment display 6. Since the same applies to the FF key and the REW key, the description thereof will be omitted.

FIG. 5 shows a flowchart of the operation error detection mode of the various sensors 2 in the configuration of FIG.
However, even in this flowchart, for example, an operation error detection check of each sensor 2 in the self-diagnosis mode is shown, and therefore a bit of a binary number corresponding to a sensor other than the sensor for which the detection check is performed is shown. Are all "0", which is different from the operation error display described in FIG.

In FIG. 5, in step S11,
The condensation sensor determines whether or not condensation has occurred, and if No (no condensation), step S14.
If yes (condensation is detected), go to step S
Proceed to 12. In step S12, the bit corresponding to the condensation sensor, that is, the 0th bit of the binary number expression is set to "1", and in step S3, the binary number 4
A hexadecimal display "1" corresponding to the bit ("0001") is displayed on the 7-segment display 6. Next, when step S13 is completed and when the result in step S11 is No, the process proceeds to step S14. In step S14, it is determined by the drum rotation detection sensor whether or not the drum rotation is in error. If No (drum error), the next step (not shown) is checked (for example, the communication sensor between peripheral CPUs is checked). If the answer is Yes (not a drum error), the 7-segment display 6 is caused to display as described above. For example, if the drum rotation sensor is checked to be “good”, it is expressed in binary 4 bits (“0010”)
The hexadecimal display “2” corresponding to is displayed on the 7-segment display 6. The same applies to the inter-peripheral CPU communication sensor and the interrupt from the peripheral CPU 4.
The description is omitted.

[0034]

As described above, in the display device of the present invention, one bit is given to each of the n × 4 types of errors, and the n-digit display element is displayed in hexadecimal so that a plurality of types can be displayed. Error can be displayed,
Even when a plurality of errors occur at the same time, it is possible to simultaneously display the combination of all the errors.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic device to which a display device of an embodiment of the present invention is applied.

FIG. 2 is a diagram for explaining an error display of a key in binary notation.

FIG. 3 is a diagram for explaining an error display of the operation of the electronic device in binary representation.

FIG. 4 is a flowchart of a key error check in a self-diagnosis mode.

FIG. 5 is a flowchart of sensor detection error check in a self-diagnosis mode.

FIG. 6 is a diagram showing an example of a conventional error display.

[Explanation of symbols]

 1 ... Key 2 ... Sensor 3 ... Main CPU 4 ... Peripheral CPU 5 ... Segment driver 6 ... 7 Segment display 10. ···Electronics

Claims (1)

Claim: What is claimed is: 1. A display device configured to display an error of a device by using n digits of display elements, wherein 1 bit is given to each of n × 4 types of errors,
By displaying each of the n-digit display elements in hexadecimal,
A display device for displaying a combination of a plurality of types of errors occurring in the device.