JP2773538B2 - Electronics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic equipment such as audio equipment and video equipment, and more particularly to an electronic equipment capable of easily analyzing the cause of a failure.

[0002]

2. Description of the Related Art Conventional audio equipment and video equipment, especially electronic equipment having a large number of operation modes, do not have a special configuration for analyzing the cause when a failure occurs. The device was restarted and its abnormal state and failure were reproduced to grasp the cause of the abnormal state and the cause of the failure.

[0003]

However, in the above-mentioned conventional electronic equipment, it is difficult to grasp the cause of the failure or abnormal state because it is not immediately known in what operating state the failure or abnormal state has occurred.

An object of the present invention is to solve the above-mentioned conventional problems, and to provide an electronic apparatus having a simple configuration that can easily grasp the cause of a failure or abnormal state when it occurs. It is.

[0005]

In order to achieve the above object, the present invention provides a device such as a cassette deck and a disc player, a group of sensors for detecting an operation state of the device, and a detection result of the group of sensors. Operating state determining means for determining an operating state of the device based on the operating state; storing means for storing operating states of the device at a plurality of different time points determined by the operating state determining means; and data stored in the storing means. Reading means for reading.

According to a second aspect of the present invention, there is provided a display device for displaying data read from the storage device.

[0007] A third aspect of the present invention is an abnormality detecting means for detecting an abnormal state such as an abnormal operation or a failure of a device.
When an abnormal state is detected by the abnormality detecting means, a prohibiting means for prohibiting writing of the operating state to the storage means is provided.

According to a fourth aspect of the present invention, there is provided a device such as a cassette deck or a disc player, a group of sensors for detecting a state of the device, and a determination of an operation state of the device based on a detection result of the group of sensors. State determination means for determining the state of the sensor group, storage means for storing a plurality of operating states of the device determined by the state determination means and states of the sensor group, and the storage means Display means for reading out and displaying the stored data.

A fifth invention of the present invention further comprises an abnormality detecting means for detecting an abnormal state such as an abnormal operation or a failure of the device. When the abnormal state is detected by the abnormality detecting means, a sensor group is provided. Is stored in the storage means.

[0010]

According to the first aspect of the present invention, since the operation states of the devices such as the cassette deck and the disc player at a plurality of different points in time are sequentially stored in the storage means, By reading out the stored contents, it is easy to understand what operation the device has made and the status of failure or abnormality, and to analyze and check the cause of the device failure.
It is effective for testimony .

Further, according to the second aspect of the present invention, the data indicating the operation state stored in the storage means can be displayed on the display means. Whether the error has occurred can be easily grasped by the content displayed on the display means.

According to the third aspect of the present invention, the operation states of the devices are sequentially stored in the storage means, and when the equipment fails, the writing of the operation state data into the storage means is prohibited. . For this reason, it is possible to easily grasp the failure or abnormal state of the device while using the storage means having a small storage capacity.

According to a fourth aspect of the present invention, a plurality of operating states of devices such as a cassette deck and a disc player and a plurality of states of a sensor group for detecting the operating state are stored in a storage means. When a failure occurs,
How the operating state and the sensor state pass and the fault occurs
Or more detailed cause analysis and verification
It is .

According to the fifth aspect of the present invention, when the device fails, the state of the sensor group is stored in the storage means, so that analysis of the failure or the like can be easily grasped with a small storage capacity.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. This embodiment is an example of a vehicle-mounted acoustic device in which a cassette deck and a radio receiver are integrated. FIG. 1 shows the front surface of the on-vehicle acoustic device of the present embodiment. In FIG. 1, reference numeral 1 denotes a main body of an audio device, 2 denotes a cassette insertion slot for inserting a cassette, 3 denotes a display device for displaying a reception frequency, a reception band, and the like. This display device 3 has a display segment for displaying the reception frequency. 3a, a display segment 3b for displaying a preset channel number, a display segment 3c for displaying a tape running direction when a cassette deck is used,
It comprises a display segment 3d for displaying the reception band. Reference numeral 4 denotes an operation button for a power switch and a volume adjustment volume, 5 denotes an operation button for sound quality adjustment, 6 denotes a preset selection button of a radio receiver, and the preset selection buttons 6 include "1" to "6". "Is displayed. Reference numeral 7 denotes a control button operated to perform fast forward (FF), fast rewind (REW), and the like of the cassette deck, and 8 denotes an operation button for performing band switching and the like.

FIG. 2 shows the electric system of the above embodiment.
In FIG. 2, 9 is a cassette deck built in the main body 1 and 10 is a cassette 1 inserted from the cassette insertion slot 2.
1, a player mechanism for driving a reel in the cassette 11 transferred to a playback position by the loading mechanism 10 to run the tape and play back an audio signal or the like recorded on the tape, and 13 for the player. An actuator group including a motor for driving the mechanism 12, a motor for switching the operation mode of the player mechanism 12, and the like, a loading switch 14 that is driven by the cassette 11 inserted into the cassette insertion slot 2 and turned on, and a reproduction by the loading mechanism 10 A cassette detection switch that is turned on by the cassette transferred to the position,
A rotation detection sensor for detecting the presence or absence of rotation of each of the two reel bases in the player mechanism 12, and is driven in conjunction with the reversal operation of the player mechanism 12 to turn on and off according to the A-side reproduction and the B-side reproduction of the cassette. This is a sensor group including a reproduction surface detection switch and the like. The rotation detection sensor has a configuration in which, for example, a reflection plate is provided at a predetermined angle on a reel base, light from a light emitting diode is reflected by the reflection plate, and the reflected light is received by a light receiving element. According to this rotation detection sensor, a pulse signal of a predetermined period is output from the light receiving element if the reel base is rotating, and no pulse is output if the reel base is not rotating. Can be detected. Reference numeral 15 denotes a radio receiving circuit built in the main body 1, 16 denotes a control circuit for controlling the cassette deck 9 and the radio receiving circuit 15, and the control circuit 16 is constituted by a microcomputer or the like. Reference numeral 17 denotes a key input unit including the operation buttons 4, 5, 6, 7, 8, and the like in FIG. 1. Reference numeral 18 denotes a non-volatile memory for storing various data. The recitation code of the device is also stored. 3 is the display device. 19 is operation buttons 4, 5,
Key determination means for determining key input such as 6, 7, 8, etc .;
0 is a state detecting means for detecting the operation mode of the cassette deck 9 and whether the sensors of the sensor group 14 are normal or abnormal based on the outputs of various sensors of the sensor group 14 of the cassette deck 9;
21 is a radio control means for giving an operation command to the radio receiving circuit 15, 22 is a writing means for writing data to the nonvolatile memory 18, 23 is a reading means for reading data from the nonvolatile memory 18, and 24 is a display device. The display control means 25 controls the actuator group 1 of the cassette deck 9 based on signals from the key determination means 19 and the state detection means 20.
3, an operation command is supplied to the radio control means 21 based on a key input from the key input means 17, a writing means 22, a reading means 23, a display control means 2
4 is a central processing means for supplying a control signal. 26 is a timer for measuring a predetermined time.

This embodiment is characterized in that data indicating the current operation mode of the cassette deck 9 and data indicating the operation mode immediately before the current operation mode are written in the non-volatile memory 18 so that the cassette deck 9 has an abnormal state, When a failure or the like occurs, the writing of data to the nonvolatile memory 18 is prohibited, and the abnormal state of the cassette deck 9 and the operation mode at the time of failure are stored and held in the nonvolatile memory 18. By reading the data written in the memory 18, it is possible to analyze the cause of the abnormal state and the failure of the cassette deck 9.

FIG. 3 shows an operation flow of the above embodiment. When the cassette 11 is inserted into the cassette insertion slot 2,
The loading switch which is one sensor of the sensor group 14 is turned on by the inserted cassette 11. When the loading switch is turned on, the state detection means 20 of the control circuit 16 detects the loading mode. When the loading mode is detected by the state detecting means 20, the central processing means 25 issues a rotation start command to a loading motor which is one of the actuator groups. Therefore, the loading motor rotates, and the inserted cassette 11 is transferred by the loading mechanism 10 (step a). When the loading mode is detected by the state detecting means 20, a write command is output from the central processing means 25 to the writing means 22, and the loading mode is stored in the memory area B of the nonvolatile memory 18 as shown in FIG. (0, 0, 0, 1) is written (step b). Step c is a step of determining whether or not the loading operation of the cassette 11 has been completed while the predetermined time is measured by the timer 26 after the loading switch is turned on. This determination in step c is performed when the operation of the loading mechanism 10 starts. This is performed by determining whether or not the cassette detection switch has been turned on within a predetermined time from. If it is determined in step c that the loading has been completed, the operation proceeds to the tape slack removal operation, and as shown in FIG.
The loading mode data stored in the memory area B of No. 8 is transferred to the memory area A, and data (0, 0, 1, 0) indicating the slack removal operation mode is written in the memory area B (step d). This tape slack removal operation is performed by rotating one of the reels in the cassette similarly to the play mode. During this slack removal operation, the presence or absence of rotation of each reel base is detected by a rotation detection sensor,
When rotation of only one of the reel bases is detected, it is determined that the tape in the cassette is slack, and when rotation of both reel bases is detected, the slack of the tape is removed. If the state is determined and the rotation of both reel bases is detected, it is determined that the slack removal operation of the tape is completed (step e). When the operation of removing the slack of the tape is completed, the mode is shifted to the play mode, and the reproducing operation is started (step f). In step g, as shown in FIG. 4C, the slack removal operation mode data (0, 0,
(1, 0) is moved to the memory area A, and data (0, 0, 1, 1) indicating the play mode is written to the memory area B. Next, in step h, it is determined whether or not each sensor constituting the sensor group 14 of the cassette deck 9 is abnormal. Specifically, a cassette detection switch for detecting whether or not the loading switch is turned on despite the completion of the loading, and for detecting that the cassette 11 has been set to the reproduction position,
Whether or not the cassette is turned off despite the cassette being set at the playback position,
This is to determine whether or not a pulse signal of a predetermined cycle is output from at least one of the two rotation detection sensors for detecting each rotation of one reel base. If it is determined in step h that there is no abnormality in the sensor, the process proceeds to step i, where it is determined whether or not an eject key among a plurality of keys constituting the key input unit 17 has been turned on. If it is determined that the eject key has been turned on, the data stored in the nonvolatile memory area B is moved to the memory area A in step j, and data indicating the eject mode is written in the memory area B. Next, an eject operation of the cassette is executed (step k), and this processing is ended.

On the other hand, if it is not determined in step i that the eject key is on, the key input unit 17 fast-forwards (F
F) It is determined whether another key such as a key or a fast rewind (REW) key has been turned on (step l), and if it is determined that another key has been turned on, a process corresponding to the key turned on in step l For example, when the FF key is turned on, processing for fast-forwarding the tape is executed, and when the fast-return key is turned on, an operation for fast-rewinding the tape is executed (step m). Next, at step n, the data stored in the memory area B of the non-volatile memory 18 is moved to the memory area A, and at step m, data indicating the mode being executed is written to the memory area B. Next, at step o, it is determined whether or not the operation currently being executed is abnormal. If it is determined that the operation is not abnormal, the process returns to step h.

In step c, when it is determined that the loading operation is not completed within a predetermined time, in step e, when it is determined that the slack removal operation is not completed, in step h, when it is determined that the sensor is abnormal, in step o, If it is determined that the operation is abnormal, the process proceeds to step p and the states of all the sensors are stored in the memory area C of the nonvolatile memory 18.
FIG. 4 (D) shows a transition to the play operation after the slack removal mode, in which an abnormal state occurs during the play operation, and data indicating that the motor for running the tape is not rotating is written in the memory area C. An example is shown. Step q
To prohibit writing to the non-volatile memory 18 and execute the eject operation of the cassette in step r to end this processing.

As described above, according to the present embodiment, when the operation mode is changed, the data indicating the operation mode immediately before the change and the data indicating the changed operation mode are written into the nonvolatile memory 18. When an abnormal operation state such as an abnormal operation state or a failure occurs, the state of the sensor is written to the nonvolatile memory 18 and further writing to the nonvolatile memory 18 is prohibited. The situation before and after the occurrence of the failure is stored in the nonvolatile memory 18.

FIG. 5 shows a process of reading data written in the nonvolatile memory 18 and displaying the read data on the display device 3. In FIG. 5, it is determined in step a whether or not a memory calling operation has been performed. This memory recall operation is performed, for example, by simultaneously operating two predetermined preset tuning buttons 6. If the memory call operation is determined in step a, step b
Then, the two tape running direction display elements 3c in the display device 3 are simultaneously turned on and off to indicate that the memory recall mode is being performed. Next, in step c, it is determined whether the preset channel selection button "1" has been turned on. If the determination is affirmative, the data in the memory area A of the nonvolatile memory 18 is read out, and the frequency display segment 3a and the preset channel display segment 3b (Step d). Next, proceeding to step e, it is determined whether or not the preset channel selection button “2” has been turned on. If the determination is affirmative, the data in the memory area B is read out in step f, It is displayed on the same display segments 3c and 3b as used for displaying d. Step g
When it is determined that the preset channel selection button "3" is on, the data in the memory area C is read out and displayed on the display segment similarly (step h). Step i is a step of determining whether or not a memory reset operation for resetting the nonvolatile memory has been performed, and this memory reset operation is performed by operating a predetermined operation button. It should be noted that if the determination in steps c, e, g, and i is NO, the process returns to step c. If it is determined in step i that the memory reset operation has been performed, the nonvolatile memory 18 is reset. Step j is the tape running direction display segment 3c.
Is turned on to indicate that the memory reset has been completed. Step k is a step for determining whether or not two predetermined preset tuning buttons have been pressed simultaneously, and it is determined YES in this step k. Then, the process proceeds to step l, where the display on the display device 3 is cleared, the memory recall mode is released, and the process is terminated. By operating the preset channel selection button "1" as described above, the data stored in the memory area A, that is, the data indicating the mode immediately before the mode in which the cassette deck 9 has failed or is in an abnormal state is displayed on the display device 3. , The mode before the failure or abnormal condition is known, and the preset tuning button “2”
Is operated, the data stored in the memory area B, that is, the data indicating the mode at the time of occurrence of the failure or the abnormal state is displayed on the display device 3. It is possible to grasp whether or not the signal has occurred in the mode, and it is possible to display data indicating the state of the sensor by operating the preset tuning button “3”. In this way, when the cassette deck has a failure or an abnormal state, a failure or an abnormal state occurs after shifting from which mode to which mode, and the state of the sensor at that time can be grasped, The cause of the failure or abnormal condition can be easily grasped.

In the above embodiment, the nonvolatile memory 18 is used as the memory, but the volatile memory 18 which is always supplied with power from the battery of the vehicle may be used. Further, in the above embodiment, the failure analysis of the cassette deck is targeted, but electronic devices such as a disc player and a disc changer may be targeted. Further, in the above-described embodiment, the mode at the time of occurrence of the abnormality and the mode immediately before the abnormality are stored in the memory. When the memory capacity is large, two or more modes up to the current mode may be sequentially stored.

[0024]

According to the first aspect of the present invention, a plurality of operating states of devices such as a cassette deck and a disc player at different time points are sequentially stored in the storage means. Therefore, by reading out the stored contents, what kind of operation of the device has
It is easy to determine whether an abnormal state has occurred.

According to the second aspect of the present invention, the data indicating the operating state of the device stored in the storage means is displayed on the display means.
The operating condition in which the failure has occurred can be easily grasped from the contents displayed on the display means.

According to the third aspect of the present invention, the operating states of the devices are sequentially stored in the storage means, and when the equipment fails, the writing of the operating state data into the storage means is prohibited. Therefore, it is possible to easily grasp the failure and abnormal state of the device while using the storage means having a small storage capacity.

Further, according to the fourth aspect of the present invention, the operating state of a device such as a cassette deck, a disc player, etc.
In order to store the state of the sensor group for detecting this operation state in the storage means, when a failure or the like occurs, the operation state and the state of the sensor group when the failure occurs Can be easily grasped, and the cause of the failure can be more easily analyzed.

Further, according to the fifth aspect of the present invention, since the state of the sensor group is stored in the storage means when the device fails, there is an advantage that the analysis of the failure can be easily grasped with a small storage capacity. .

[Brief description of the drawings]

FIG. 1 is a front view of an electronic device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of the electronic apparatus of the embodiment.

FIG. 3 is an operation flow of the embodiment.

FIG. 4 is a view showing a storage state of the nonvolatile memory according to the embodiment;

FIG. 5 is a flowchart of a memory call operation according to the embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Cassette insertion slot 3 Display device 4, 5 Operation button 6 Preset channel selection button 7, 8 Operation button 9 Cassette deck 10 Loading mechanism 11 Cassette 12 Player mechanism 13 Actuator group 14 Sensor group 16 Control circuit 17 Key input section 18 Non-volatile Memory 19 key determination means 20 state detection means 22 writing means 23 reading means 24 display control means 25 central processing means 26 timer

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-65492 (JP, A) JP-A-63-277982 (JP, A) JP-A-3-98800 (JP, U) JP-A-2-98 65492 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) G11B 33/10 601 G11B 33/00

Claims (7)

(57) [Claims] 1. An apparatus such as a cassette deck or a disc player, a group of sensors for detecting an operation state of the apparatus, an operation state determining means for determining an operation state of the apparatus based on a detection result of the sensor group, An electronic device comprising: a storage unit configured to store operation states of the device at different times determined by the operation state determination unit; and a reading unit configured to read data stored in the storage unit. 2. The electronic apparatus according to claim 1, further comprising display means for displaying data read from the storage means. 3. The electronic apparatus according to claim 2, wherein the display means of the apparatus such as a cassette deck or a disc player is a display means for displaying data read from the storage means. 4. An abnormality detecting means for detecting an abnormal state such as an abnormal operation or a failure of a device, and a prohibiting means for prohibiting the writing of the operating state to the storage means when the abnormal state is detected by the abnormality detecting means. The electronic device according to claim 1, comprising: 5. A semiconductor device comprising: a first memory for storing data indicating a current operation state of a device; and a second memory for storing data indicating an operation state before the current operation state of the device. The electronic device according to claim 1. 6. A device such as a cassette deck or a disc player, a group of sensors for detecting the state of the device, and an operation state of the device and a state of the group of sensors are determined based on a detection result of the group of sensors. Status determination means, and a plurality of differences between the devices determined by the status determination means.
An electronic apparatus comprising: a storage unit configured to store an operation state and a state of the sensor group at a certain time; and a display unit configured to read and display data stored in the storage unit. 7. An abnormality detecting means for detecting an abnormal state such as an abnormal operation or a failure of a device, and when the abnormal state is detected by the abnormality detecting means, the state of the sensor group is stored in the storage means. The electronic device according to claim 6, wherein: