JP2005092277A - Audio visual device with failure state confirmation function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio visual device with a failure state confirmation function allowing knowing of a process of input operation running into failure occurrence. <P>SOLUTION: This audio visual device is provided with input codes a, etc. one-to-one corresponding to the input operation to an input device, repetitive input codes a', etc. specifying repetitive input operation, state codes A, etc. corresponding to states after normal transition that are results of the input operation, and failure codes ER1, etc. specifying failure states. The audio visual device has: a history recording means generates the input code or the repetitive input code, and the state code or the failure code after failure detection when the input operation is performed, and recording them into an input code recording area 21 and a state code area 22 of a nonvolatile memory 20; a failure state detection means; a record stop means stopping the record to new input operation in time of the failure state occurrence or in time of the repetitive input operation; and an indication means for the latest input code or repetitive input code, and state code or failure code recorded in the nonvolatile memory 20. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to the field of audio systems such as in-vehicle and home-use compact disc (CD) and mini-disc (MD) playback devices, and audio-visual (AV) devices such as in-vehicle navigation systems, and in particular, the AV device. The present invention relates to a technology of a failure state confirmation function that enables a failure state to be encoded and confirmed.

  Conventionally, a specific code (generally referred to as an error code) corresponding to various failure causes that are expected to occur is preset and recorded in an external nonvolatile memory such as a ROM, and audio visual When a failure occurs in the device and the device is in a failure state where it cannot operate normally, the failure state detection means detects the failure cause or failure location, and an error code corresponding to the failure cause or failure location is stored in the external nonvolatile memory. There is an audio / visual device provided with a failure state confirmation means that is controlled by a microcomputer of the system controller so that it is read out from the display and displayed on a display device such as a liquid crystal with characters such as “E12”.

  For example, in the following [Patent Document 1], when a failure occurs in an electronic device composed of a plurality of circuit blocks, the occurrence of the failure is detected by monitoring in which circuit block the failure has occurred. In this regard, a technique of an electronic device having a function of displaying using a display element in a display mode corresponding to a block in which the failure has occurred is disclosed.

JP-A-10-268850.

  However, the failure state confirmation function in various conventional electronic devices including an audio / visual device simply displays a specific failure cause or failure location as an error code.

  However, even when the audio-visual device is operating normally, an unfamiliar user often mistakes an input operation and mistakes it as a failure, often occurring.

  Therefore, the process of the input operation by the user reaching the failure state, that is, the result of the device main body with respect to the input operation performed by the user (the state after the transition) is associated with the input operation. Making it possible to display a pair is considered useful for elucidating the cause of the failure.

  That is, an input code corresponding to the user's input operation is set, and the result (the state after transition) of the input operation is encoded, and the input code and the state code of the result after the transition are associated with each other. By providing a means for recording in the non-volatile memory and a means for displaying them, the user's input operation leading to the failure can be identified by comparing the displayed input operation code and status code, and a true failure has occurred It can be easily understood whether this is due to the misunderstanding that the user has failed.

  However, in the case of misunderstanding of the user, the user usually repeats the same input operation, and further performs other input operations (the buttons that are not related to the various input operations are pushed around). There are many cases.

  In this case, since the latest recorded input code is changed before failure analysis is performed, the process of the input operation of the user who has reached the failure state cannot be clarified, and the user misrecognizes whether it is really a failure state. It becomes difficult to discriminate.

  The present invention has been made in view of the above circumstances, and the user's input operation and the resulting post-transition state are recorded and displayed as a pair of input code and state code, and the user has doubts about the operation. It is an object of the present invention to provide an audio / visual device with a failure state confirmation function that can be used to guess what the user has, so that the user's input operation process in which the failure state has occurred can be identified with certainty.

  The present invention relates to an input code corresponding to a plurality of types of input operations from the outside to the input device in a one-to-one manner, and the repeated input operations when the same input operation is performed twice or more within a predetermined time from the outside. A repetitive input code to identify, a status code corresponding to a state after normal transition of the device main body as a result of the input operation, and a failure code for identifying a failure state in which the device main body does not operate normally, When the input operation to the device is performed, the input code or the repeated input code and the state code after the normal transition or the failure code after the failure detection are generated, and each of them is in a one-to-one correspondence with each other. A history recording means for cyclically recording in the input code recording area and the status code area of the memory, a failure state detecting means for detecting when a failure state occurs, When a failure state occurs or when the same input operation is repeatedly performed within a predetermined time from the outside, the input code, the repeated input code, the status code, and the failure code for a subsequent new input operation are stored in the nonvolatile memory. A failure comprising: a recording stop unit that stops recording; and a display unit that displays the latest input code or repetitive input code recorded in the nonvolatile memory and a status code or a fault code on a display device. The above object is achieved by providing an audio-visual device with a state confirmation function.

Since the audio / visual device with a failure state confirmation function according to the present invention is configured as described above,
(1) Since the user's input operation and the resulting post-transition state are recorded in a pair in the nonvolatile memory, the process leading to the occurrence of the failure can be specified.
(2) Since the input operation immediately before reaching the phenomenon that the user has recognized as a failure and the state after the transition are coded and displayed, the user's operation content that causes the failure can be understood and used during failure analysis It is easy to identify whether the person is mistaken or a true failure.

  An embodiment of an audiovisual apparatus with a failure state confirmation function according to the present invention will be described with reference to the drawings.

  FIG. 1 is an example of a block circuit diagram of an MD recording / reproducing apparatus with a fault condition confirmation function as a typical audio / visual apparatus with a fault condition confirmation function of the present invention. FIG. 2 is a flowchart example of a specific form of the failure state confirmation function according to the present invention. FIG. 3 is a diagram for explaining the contents recorded in the nonvolatile memory.

  In FIG. 1, an MD recording / reproducing apparatus 30 with a failure state confirmation function according to the present invention is composed of the same blocks as those of a known MD recording / reproducing apparatus, and in addition, a failure state detection for detecting a failure state when it occurs. Means 19, non-volatile memory 20 for recording input codes, status codes, etc., when a fault condition occurs due to computer control, or when the same input operation is repeatedly performed from outside for a predetermined time (for example, 5 seconds) Recording stop means for canceling recording of the input code, repeated input code, status code and failure code for the new input operation in the nonvolatile memory 20, and the latest input code recorded in the nonvolatile memory 20 by computer control Or a display unit that repeatedly displays the input code and the status code or the failure code on the display device 17. A.

  More specifically, when the digital audio signal recorded on the MD 1 is reproduced, the compressed digital audio signal data of the magneto-optical disk 1 b housed in the MD 1 cartridge 1 a that is rotated by the spindle motor 5 on the turntable. Is read by the optical pickup 2, passes through the head amplifier 3 (RF matrix amplifier), and is demodulated by the EFM and CIRC in addition to the encoder / decoder 10 of the EFM / CIRC. The address decoder 4 demodulates an ADIP signal recorded in advance on the disk 1b to obtain an address signal and inputs it to the encoder / decoder 10 of the EFM / CIRC. The seismic memory controller 11 stores the compressed data from the EFM / CIRC encoder / decoder 10 in a memory circuit 14 such as a buffer memory (DRAM), encodes / decodes sector format signals, error data of main data, buffer control Data control functions such as external input / output control are provided. Next, the ATRAC encoder / decoder 12 reads the compressed data, inputs it to the decompression circuit, demodulates the data, and sends the demodulated data to a digital-analog converter 16 (DAC) to convert it into an analog audio signal. The converted analog audio signal is output to the audio signal output terminal OUT. Next, when an audio signal is recorded on the MD1, an analog audio signal input from the audio signal input terminal IN is converted into digital data by an analog-to-digital converter (ADC) 15 or read by a playback device (not shown). Are input from the digital input terminal DIN, converted into compressed data by the ATRAC encoder / decoder 12, and stored in the memory circuit 14 via the earthquake-resistant memory controller 11. After the storage amount of the memory circuit 14 reaches a certain amount, the stored compressed data is recorded in the MD1. That is, the seismic memory controller 11 reads the compressed data from the memory circuit 14 and outputs it to the encoder / decoder 10 of the EFM / CIRC. The encoder / decoder 10 of the EFM / CIRC performs EFM and CIRC modulation and outputs the data. Is output to the magnetic head drive circuit 7. The magnetic head drive circuit 7 generates a vertical magnetic field in the magnetic head 9 in correspondence with the EFM signal data for recording the direction of the current passed through the magnetic head 9. At the same time, the laser output from the optical pickup 2 through the servo control circuit 8 is output under the control of the system controller 13 and irradiated onto the magneto-optical disk 1b, and a digital signal is recorded by the interaction between the vertical magnetic field and the laser.

  A control signal for moving the optical pickup 2 is applied from the system controller 13 to the feed motor 6 via the servo control circuit 8. The system controller 13 is composed of a microcomputer or the like, and is connected to the servo control circuit 8, the EFM / CIRC encoder / decoder 10, and the seismic memory controller 11 via a bus to exchange control signals, record, Control of all controls such as reproduction and search operation of the optical pickup 2 and detection / rewrite control of the address information of the management information area of the MD 1 during recording / reproduction / editing are performed by executing the program.

  The input device 18 sends a mechanical control signal and other command control signals to the system controller 11 by a key operation such as a push button of the user.

  The display device 17 is a display device such as a liquid crystal that displays various data from the system controller 13 via a driver.

  The nonvolatile memory 20 can use a rewritable memory chip such as a flash EPROM or an extra recording area of a built-in EEPROM or flash EPROM in the system controller 13.

  The failure state detection means 19 detects the occurrence of a failure from the control / response signals of the various mechanical parts and circuit blocks described above, and may be incorporated in the system controller 13.

  Next, a processing procedure by the microcomputer for confirming the failure state will be described with reference to FIGS.

  As a premise, input codes (a, b, c, d, e, f, g, h,...) Corresponding one-to-one to a plurality of types of input operations to the input device 18 by the user from the outside, A repeated input code (a ′, b ′, c ′, d ′, e ′, f) for specifying the repeated input operation when the same input operation is repeated twice or more within a predetermined time (for example, 5 seconds). ′, G ′, h ′,...) And status codes (A, B, C, D, E, F, G, H, etc.) corresponding to the states after the normal transition of the apparatus main body as a result of the input operation. .) And a failure code (ER1, ER2, ER3,...) That identifies a failure state in which the apparatus main body does not operate normally, and the input when the input operation to the input device 18 is performed Code (a, b, c, d, e, f, g, h,...) Or the repeated input code (a ′ b ′, c ′, d ′, e ′, f ′, g ′, h ′,...) and status codes after normal transition (A, B, C, D, E, F, G, H,. .) Or the corresponding failure code (ER1, ER2, ER3,...) After the failure is detected, and is generated in the input code recording area 21 and the status code area 22 of the nonvolatile memory 20 in a one-to-one correspondence. A history recording means (see FIG. 3) for recording the click is provided.

  When the user performs a switch input operation for generating a mechanical control signal or the like by switch input from the outside (step S1), it is determined whether or not the same switch has been repeatedly operated within a relatively short predetermined time (for example, 5 seconds). Detected (step S2), if yes, repeatedly generates input codes a ′, b ′, c ′,... (Step S3) and repeatedly generates an input flag (step S4). Corresponding input codes a, b, c,... Are generated (step S5) and recorded in the input code recording area 21 of the nonvolatile memory 20 (step S6).

  Next, it is determined whether or not the occurrence of a failure state has been detected (step S7). If Yes, failure codes ER1, ER2,... Are generated (step S8). The input codes a, b, c,... Are associated with the area 22 and recorded cyclically (step S9). If No (no failure), the next occurrence of repeated input flag is checked (step S10). If there is, the recording of the input code, repeated input code, status code, and failure code by a new input operation thereafter is stopped. If there is no repeated input flag (step S11), the state after the normal transition is obtained (step S12), and state codes A, B, C,. Is recorded in the status code recording area 22 of the memory 20 (step S14).

  At the time of failure analysis, the latest code recorded from the input code recording area 21 and the status code recording area 22 of the nonvolatile memory 20 is read (step S15) and displayed on the display device 17 (step S16).

  The control in steps S1 to S16 according to the above flow is performed by software control of the failure state detection means 19, the nonvolatile memory 20, the display device 17, and the input device 18 by the microcomputer of the system controller 13.

  According to the above flow, the input code recording area 21 and the status code recording area 22 of the nonvolatile memory 20 correspond to the latest input codes (a, b, c,...) And the corresponding ones as shown in FIG. The state code (A, B, C,...) After the transition is cyclically overwritten.

  On the other hand, if the user misunderstands the failure and repeats the same input operation within a short time, as shown in FIG. 3B, for example, the latest input code is repeated, for example, the repeated input code a ′ and the normal status code after the transition Since A is held in the recorded state, it can be inferred that the user has questioned the operation (error recognition) during failure analysis.

  Also, when a true failure condition occurs, the state where the input code a and the failure code ER3 immediately before the occurrence of the failure are recorded as shown in FIG. 3C, for example. The specific input operation and the process of failure occurrence are clarified.

  In addition, the above description is an example of an MD recording / reproducing apparatus, but of course, the audio / visual apparatus with a failure state confirmation function of the present invention is not limited to this.

FIG. 2 is an example of a block circuit diagram of an MD recording / reproducing apparatus as a typical audio / visual apparatus with a failure state confirmation function of the present invention. It is an example of the flowchart of the specific form of the failure state confirmation function which concerns on this invention. It is a figure for demonstrating the recording content to the non-volatile memory which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 13 System controller 17 Display apparatus 18 Input apparatus 19 Failure state detection means 20 Non-volatile memory 21 Input code recording area 22 Status code recording area 30 MD recording / reproducing apparatus A, B, C with a failure state confirmation function ... Status code ER1, ER2, ER3, ... Fault codes a, b, c, ... Input codes a ', b', c ', ... Multiple input codes

Claims (1)

An input code corresponding to a plurality of types of input operations from the outside to the input device on a one-to-one basis, and a repetitive input that identifies the repeated input operation when the same input operation is performed twice or more within a predetermined time from the outside A code, a status code corresponding to a state after a normal transition of the device main body as a result of the input operation, and a failure code for specifying a failure state in which the device main body does not operate normally, and input to the input device When the operation is performed, the input code or the repeated input code, the status code after the normal transition or the failure code after the failure detection is generated, and the input code of the nonvolatile memory is associated with each one-to-one History recording means for cyclically recording in the recording area and the status code area;
A failure state detection means for detecting a failure state when it occurs,
When a failure state occurs or when the same input operation is repeatedly performed within a predetermined time from the outside, the input code, the repeated input code, the status code, and the failure code for the subsequent new input operation are stored in the nonvolatile memory. A recording canceling means for canceling the recording;
Display means for displaying the latest input code or repeated input code and status code or failure code recorded in the nonvolatile memory on a display device;
An audio-visual device with a fault condition confirmation function.

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