JPH0721701A - Signal processor - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a signal processing device having a function of a system error message logger in which the error detection time is weighted to reduce the amount of information as it gets older. [Structure] Interface CPU 4 as error detecting means for detecting errors in various functions of a data recorder 28
0, a servo system CPU 50, a signal processing system CPU 60, and an interface system CPU 4 as the error detecting means.
0, the servo system CPU 50, and the main CPU 70 as an error information recording unit for recording with an information amount of an error that is older than an information amount of an error newly detected by the signal processing system CPU 60 reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal processing device having a system error message logger function suitable for use in, for example, a data recorder.

[0002]

2. Description of the Related Art Conventionally, data is recorded from a host device such as a host computer to a magnetic recording device such as a data recorder.
A signal processing device having the function of a system error message logger, which detects an error that occurs when each function of the data recorder is not functioning correctly during playback and stores this error message in the memory. I was using it.

The memory for storing error messages contains
Since the most important alarm message that must be stopped immediately and the warning message that prompts the warning are stored, a certain number of error messages are stored so that the important alarm message is not overlooked.

In the function of such a system error message logger, the number of error messages stored in the memory by the CPU is predetermined, and when more error messages occur, the old error messages are deleted in order. Was set.

Further, as shown in FIG. 6, the information structure of the system error message logger stored in the memory is "Operar" indicating the time when the error message occurs.
"Time", "IDR value" indicating the position of the ID on the tape, and "motion mo" indicating various operations such as recording and reproduction.
de ”,“ Error type ”indicating a system error such as an alarm and warning, and“ Error Message No. ”indicating an error message number.

The information amount of this error logger is
"ation Time" is 5 bytes, and "IDR value" is 4
Byte, "Operation mode" is 4 bytes, "Type of Error" is 1 byte, "Error Message N"
o. Is 2 bytes and is attached to one message.
It occupies 16 bytes of information.

[0007]

However, in the signal processing device described above, in the function of the system error message logger, the number of error messages stored in the memory by the CPU is predetermined, and more error messages are generated. In this case, the old error messages are set to be deleted in order, and the error messages stored in the memory occupy the same amount of information regardless of whether they are old or new. There was the inconvenience of being bad.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a signal processing device having a function of a system error message logger in which the error occurrence time is weighted so that the older the amount of information, the smaller the information amount. It is what

[0009]

As shown in FIG. 2, for example, a signal processing apparatus of the present invention is a signal processing apparatus for processing data supplied from a data supply side in a predetermined format and supplying the data to a magnetic recording side. Error detecting means 40, 50, 60 for detecting errors in various functions of the magnetic recording side 28
And when recording the error information detected by the error detecting means 40, 50, 60, the error information is recorded by reducing the information amount of the old error from the information amount of the new error with reference to the time of error detection. The recording means 70 is provided.

The signal processing apparatus of the present invention is shown in FIG.
As shown in FIG. 4, the error information recording means 70 weights the information items constituting the error information in a plurality of stages from important items to incidental items, and erases the incidental items in order.

The signal processing apparatus of the present invention is shown in FIG.
As shown in FIG. 4, the error information recording means 70 weights a plurality of levels from important types to incidental types according to the type of error information, and erases the incidental types in order.

The signal processing apparatus of the present invention is shown in FIG.
As shown in FIG. 5, the error detecting means 40, 50, 60 are provided for each group according to various functions of the magnetic recording side 28, and the error information recording means 70 sets an upper limit on the number of error information for each group and records the error information. It was done like this.

[0013]

According to the present invention described above, the error detecting means 40, 50 for detecting errors in various functions of the magnetic recording side 28,
60 and the error information detected by the error detecting means 40, 50, 60, the error is recorded by reducing the information amount of the old error from the information amount of the new error on the basis of the time of error detection. Since the information recording means 70 is provided, detailed information can be obtained for new error information and minimum information can be obtained for old error information, and the error information recording means 70 can be used efficiently.

Further, according to the present invention described above, the error information recording means 70 weights the information items forming the error information in a plurality of stages from important items to incidental items,
Since the items are deleted in order from the incidental items, in the items that make up the error information, the minimum important information items are left, and the incidental items are deleted so that unnecessary information is not left unnecessarily and the error information is recorded. The means 70 can be used efficiently.

Further, according to the present invention described above, the error information recording means 70 weights a plurality of stages from important types to incidental types according to the type of error information, and erases in order from the incidental types. In the type of information,
It is possible to efficiently use the error information recording means 70 without leaving unnecessary information unnecessarily by leaving the important type and deleting the incidental type.

Further, according to the present invention described above, the error detecting means 40, 50, 60 are provided for each group by various functions of the magnetic recording side 28, and the error information recording means 70 is provided.
Sets an upper limit on the number of error information for each group and records the error information. Therefore, the error information recording means 7 does not unnecessarily leave duplicated error information generated under the same conditions in the same group.
0 can be used efficiently.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the signal processing device 12 of the present invention will be described in detail below with reference to FIGS. The signal processing device 12 enters between a host computer as an upper device and a magnetic recording device such as a data recorder 28 as a lower device, and transfers data transferred from the host computer to ANSI (American).
National Standards Instit
ute: In a device that converts to the DD-1 format, which is a magnetic recording format standardized by the American National Standards Institute, self-diagnosis is performed as to whether or not each function of the data recorder 28 is functioning correctly, and an error is detected. It has the function of a system error message logger that stores this error message when it occurs.

As shown in FIG. 1, the data recorder 28 including the signal processing device 12 having the function of the system error message logger is configured as follows. Data from a host computer as a host device is supplied to the data input terminal 1, and the data input / output interface circuit 3 processes it so as to synchronize with the digital signal processor 4 in the subsequent stage.

In order to increase the processing speed, the digital signal processor 4 has four boards so that the other boards process during the processing period of one board and the processing is performed without waiting time of each board. Parallel processing. The digital data supplied to the digital signal processor 4 is modulated into a high frequency signal after adding an error correction code and supplied to the RF signal recording circuit 5. The RF signal recording circuit 5 records signals equivalently (REC equalizing).
After that, the rotary head 6 records.

When reproducing the data recorded in this way, the high frequency signal reproduced by the RF signal reproducing circuit 7 is demodulated by the digital signal processor 4, error correction is performed, and the data of the data input / output interface circuit 3 is reproduced. It is supplied to the host computer from the output terminal 2.

Here, the system signal processor 12
Is a CPU board that performs all control. In this example, error detection processing is mainly performed. However, when an external error detection start command or error detection result is inquired, RS-232C is used. Various external remote control signals from the terminal 8, the GP-IB terminal 9, and the RS-422 terminal 10 are input to the system signal processor 12 via the interface circuit 11.

The control panel 13 comprises a keyboard for performing various operations and a display device. The mechanical sensor 14 is provided in the tape running system and the cassette compartment (cassette), and detects whether or not the proper operation is performed. This mechanical sensor 14
Usually uses an optical transmissive sensor that is a pair of a light emitting diode and a phototransistor.

The detection signal from the mechanical sensor 14 is processed by the system signal processor 12, and the result drives the motor drive circuit 15 to drive the drum motor 16, the capstan motor 17, the head shield solenoid 18, and the reel shift motor 19. , Loading motor 20, cassette motor 21, S reel motor 22,
S reel brake solenoid 23, T reel motor 2
4, various motors and solenoids such as the T reel brake solenoid 25, the tape path solenoid 26, the tension solenoid 27, etc. are operated.

The system signal processor 12 constitutes the signal processing device of the present invention. More specifically, as shown in FIG. 2, the main CPU 70 and the interface CPU 4 are provided.
0, a servo system CPU 50, and a signal processing system CPU 60. The interface CPU 40 is connected to the maintenance terminal 30, and a maintenance monitor 41 for monitoring maintenance, an RS-232C terminal 31,
A remote interface circuit 42 for inputting various remote control signals from the outside through the RS-422 terminal 32 and the GP-IB terminal 33, a panel interface circuit 43 connected to the control panel 13 for performing an input / output interface of the control panel 13, and an interface system It is composed of an interface system error detection program 44 for detecting an error and a monitor 45 for monitoring the error detection.

The servo system CPU 50 is composed of a servo system error detection program 51 and a monitor 52, and detects mechanical and tape running errors. The signal processing system CPU 60 includes a signal processing system error detection program 61 and a monitor 62.
The error detection of the signal processing system is performed. Main CP
The U 70 is composed of an error diagnosis program 71, an error diagnosis result processing section 72, a system controller 73 and a system error logger 74, and collects self-diagnosis results of error detection of each CPU and stores them in the system error logger 74.
It can be displayed on the control panel 13 via the panel interface circuit 43.

These system error messages include:
There are two types of alarm messages that require urgent attention and warning messages that prompt warnings, and these are recorded in different areas of the system error logger 74. These are displayed on the control panel 13 and remote from the error diagnosis result processing section 72. It can also be read out via the interface circuit 43. The system error message displayed on the control panel 13 and the system error message read to the outside have a one-to-one correspondence.

The following are examples of alarm messages and warning messages and their causes and actions. First, as an alarm message, "(XX) sensor d
"XX" indicates the name of the sensor in which the abnormality is detected. When the output value of the mechanical sensor 14 (photo interrupter) is abnormal and the combination of sensor outputs is inconsistent. That is, it is an error that occurs when the outputs of two sensors that should not be turned on at the same time are both turned on.

"Head shield (S) def
“Active” and “Headsheld (T)”
"defective" is when the operation of the head shield plate that shields the front of the longitudinal head is abnormal, and when the drive solenoid 18 is off, that is, at the time of reset, the micro switch attached to the shield plate is not off. This is an error that sometimes occurs.

[Loading not complete]
“Ted (x)” is a case where the cassette injection is not completed, and information on the loading system or the cassette computer is entered in (x). "Power supply o
"ver heat" is when the temperature sensor provided in the power supply is activated.

[Reel break solenoi
“D defective” is when the current flowing through the reel brake solenoids 23 and 25 is too large.
“Tape slacked” is when the tape is slack, when the measured tension value is abnormally low, and when the outputs of the tape end sensors (S) and (T) simultaneously detect the absence of tape. An alarm message appears.

"Tension error" is when the measured value of tension is abnormally too large or too small with respect to the control target value. "Tape path t
"rouble (xxxx)" is a case where an abnormality occurs in the tape path, and (xxxx) contains the part and the cause of the error.

Next, as the warning message,
This is a case where there are “Illegal external (xxxx)” and “Illegal input (xxxx)” and the frequency of the input clock (clock) or the synchronization signal (sync) is abnormal.

"Internal command b
"over full" is the interface CPU 4
This is a case where the buffer for the remote control message between 0 and the main CPU 70 overflows. "Lost lock" is forward (FW
This is the case when the servo lock is released once after being locked once in D) or during recording (REC).

"No external (xxx
x) ”and“ No input (xxxx) ”are
Data clock or sync signal (sy)
nc) or the frequency is almost zero.
"Uncorrected error exist
“S” is the case where there is an error in the data being reproduced or recorded that cannot be corrected by the error correction circuit.

In the signal processing device 12 having such a system error message logger function, even if a system error message occurs while the power of the data recorder 28 is on, the operator is not near the device. However, the system error message is stored in the system error logger 74 so that the system error message can be referred to later.

Among the system error messages,
Even if the message disappears immediately, you can make sure that you do not miss it. At this time, the system error message can easily deal with the error by accumulating the status of the error together, so it is better to store as much necessary information as possible.

As described above, there are two types of system error messages, an alarm message and a warning message, and the information items stored together with "Error Message No." indicating the number of these error messages are shown in FIG. There are four types, as shown in "Operaa" which indicates the time when the error message occurs.
"Action Time", "IDR value" indicating the position of the ID on the tape, and "motion mo" indicating various operations such as recording and reproduction.
de "," error type "indicating a system error such as an alarm and a warning.

In this case, depending on the "operation mode", is this error message generated during the forward operation?
You can see if it happened when you stopped or when the cassette tape was not loaded. As for these pieces of information, only the latest 100 messages are stored in the system error logger 74, and the previous information is replaced with new information and deleted.

For example, as shown in FIG. 5, when the total number of error loggers is 7, "Msg" is added to the current error logger.
1 "to" Msg7 "are stored, and new" Msg "
When "g8" occurs, the old "Msg1" is erased and replaced with the new "Msg8". Such an error logger is written in a backup memory that does not disappear even when the power is turned off, and data is protected.

Here, many information items are added to the new error message, and when the error messages increase over time, some of the information items to which the error message is added are deleted. To do so. For example, as shown in FIGS. 3 and 4, if 99 error messages are stored, the latest 50 error messages have a maximum of 5 information items like the information A and an information amount of 16 bytes. Store, then new, 2
The 5 error messages are 3 information items like information B, and store the information amount of 11 bytes. The oldest 24 error messages are 2 information items like information C, 7 bytes. The information items are stored in order from the oldest one, that is, the information amount is reduced in order from the oldest one, and more frequently used information is stored in the same memory capacity.

In this case, the data can be arbitrarily selected from the information A having the information amount as the maximum information item, and each data item is provided in a different area of the memory. The information C is an important item such as “Operation Time” and “Error M” as an information amount of 7 bytes.
message No. ", And" Behavior mode "is added to the information B as the next level, and" IDR value "and" Error type "are added to the information A at the end, in order, but the" Error Message No. 2 bytes is the minimum amount of information as a necessary information item, and is not limited to the above example, and the information item and the weighting stage may be set appropriately.

The system error message generated by the data recorder 28 is divided into a certain group, for example, a tape path type error group, a mechanical sensor type error group, etc., and the tape path type is set for a total error log number of 100. It is also possible to leave only 40 error groups at maximum in the logger, and set the maximum error group to 30 in the mechanical sensor system so that the oldest error groups are deleted.

As described above, the error logger function determines the upper limit of the error message stored in the logger by each group, so that, for example, when a damaged tape is recorded and reproduced many times, the same error message is generated more than necessary. It is possible to use the memory effectively because it is not stored in a large amount and other necessary error messages are not stored.

According to the above example, the interface system CPU 40, the servo system CPU 50, the signal processing system CPU 60 as the error detecting means for detecting the error of the various functions of the data recorder 28, the interface system CPU 40 as the error detecting means, and the servo system. CPU50, signal processing system CP
When the error information detected by U60 is recorded, a main CPU 70 is provided as an error information recording unit that records an error information amount that is older than a new error information amount when the error is detected. Therefore, detailed information can be obtained for new error information and minimum information can be obtained for old error information, and the error information recording means 70 can be used efficiently.

Further, according to the present invention described above, the main CPU 70 as the error information recording means weights the information items forming the error information from the important items to the incidental items in a plurality of stages, and determines from the incidental items. Since the items are erased in order, in the items that make up the error information, the most important information items are left, the additional items are erased, and unnecessary information is not left unnecessarily. The CPU 70 can be used efficiently.

Further, according to the present invention described above, the main CPU 70 as the error information recording means performs weighting in a plurality of stages from the important type to the incidental type according to the type of error information, and erases the incidental types in order. Therefore, it is possible to efficiently use the main CPU 70 as an error information recording unit without leaving unnecessary information unnecessarily and leaving important types in the error information types.

Further, according to the present invention described above, the interface CPU 40, the servo CPU 50, and the signal processing CPU 60 as the error detecting means are provided for each group according to various functions of the data recorder 28 and serve as the error information recording means. Since the main CPU 70 of each group sets an upper limit for the number of error information for each group and records the error information, it does not leave redundant error information that occurs under the same conditions in the same group indiscriminately, and the main CP as error information recording means.
U70 can be used efficiently.

The above embodiment is an example of the present invention.
It goes without saying that various other configurations can be adopted without departing from the scope of the present invention.

[0049]

According to the present invention described above, when the error detecting means for detecting an error of various functions on the magnetic recording side and the error information detected by the error detecting means are recorded,
With the error information recording means that records the error information amount smaller than the new error information amount when the error is detected, the detailed information about the new error information and the information about the old error information are provided. The minimum amount of information can be obtained and the error information recording means can be used efficiently.

Further, according to the present invention described above, the error information recording means weights the information items constituting the error information in a plurality of stages from important items to incidental items, and deletes the incidental items in order. As a result, in the items that make up the error information, leave the minimum important information items,
It is possible to efficiently use the error information recording means without erasing unnecessary items and leaving unnecessary information unnecessarily.

Further, according to the present invention described above, the error information recording means performs weighting in a plurality of stages from the important type to the incidental type according to the type of the error information, and erases in order from the incidental type. In this type, the important type is left, the incidental type is erased, unnecessary information is not left unnecessarily, and the error information recording means can be used efficiently.

Further, according to the present invention described above, the error detecting means is provided for each group by various functions on the magnetic recording side, and the error information recording means sets the upper limit to the number of error information for each group. Since the information is recorded, redundant error information that occurs in the same group under the same conditions is not left unnecessarily, and the error information recording means can be used efficiently.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a data recorder having a signal processing device of the present invention.

FIG. 2 is a block diagram showing an embodiment of a signal processing device of the present invention.

FIG. 3 is a diagram for explaining the operation of one embodiment of the signal processing device of the present invention.

FIG. 4 is a diagram for explaining the operation of one embodiment of the signal processing device of the present invention.

FIG. 5 is a diagram for explaining the operation of one embodiment of the signal processing device of the present invention.

FIG. 6 is a diagram illustrating the operation of a conventional signal processing device.

[Explanation of symbols]

 1 data input terminal 2 data output terminal 3 data input / output interface circuit 4 digital signal processor 5 RF signal recording circuit 6 rotary head 7 RF signal reproducing circuit 8 RS-232C terminal 9 GP-IB terminal 10 RS-422 terminal 11 interface circuit 12 System signal processor 13 Control panel 14 Mechanical sensor 15 Motor drive circuit 16 Drum motor 17 Capstan motor 18 Head shield solenoid 19 Reel shift motor 20 Loading motor 21 Case-con motor 22 S reel motor 23 S reel brake solenoid 24 T reel motor 24 T reel brake Solenoid 26 Tape pass solenoid 27 Tension solenoid 28 Data recorder 40 Interface CPU 4 4 Interface system error detection program 45 Monitor 50 Servo system CPU 51 Servo system error detection program 52 Monitor 60 Signal processing system CPU 61 Signal processing system error detection program 62 Monitor 70 Main CPU 71 Error diagnostic program 72 Error diagnostic result processing unit 73 System controller 74 System error logger

Claims (4)

[Claims] 1. A signal processing device for processing data supplied from a data supply side to a magnetic recording side by processing the data in a predetermined format, and error detecting means for detecting an error of various functions on the magnetic recording side, When the error information detected by the error detecting means is recorded, the error information recording means is provided so that the information amount of the old error is smaller than the information amount of the new error when the error is detected and is recorded. A signal processing device characterized by: 2. The signal processing device according to claim 1, wherein the error information recording means weights the information items forming the error information in a plurality of stages from important items to incidental items, A signal processing device characterized by erasing in sequence. 3. The signal processing device according to claim 1, wherein the error information recording means weights a plurality of stages from an important type to an incidental type according to the type of the error information, and sequentially from the incidental type. A signal processing device characterized by erasing. 4. The signal processing device according to claim 1, 2 or 3, wherein the error detecting means is provided for each group according to various functions on the magnetic recording side, and the error information recording means is provided for each group. A signal processing device, wherein an upper limit is set for the number of pieces of error information and the error information is recorded.