JPS6312430B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for diagnosing a fault in a facsimile storage and conversion device having at least a central processing section, a storage section, an encoding section and a decoding section.

FIG. 1 is a block diagram of the main parts of a device that implements a conventional diagnostic method for a facsimile storage and conversion device.
1 is a central processing unit of a facsimile storage and conversion device which has a device diagnostic program in addition to general storage and conversion processing, and has the function of activating a faulty device and comparing it with test results; 2 is a central processing unit that receives image signals coming from a facsimile terminal; a receiving section that receives and converts the analog signal into a digital signal; 3, an encoding section that encodes the digitized image signal with redundancy reduction; 4, a buffer memory section that temporarily stores the encoded image signal; 5;
6 is a buffer memory unit that temporarily stores the image signal when sending the encoded image signal to a terminal; 7 is a decoder that decodes the encoded image signal. 8 is a transmitter that converts the decoded digital image signal into an analog signal and sends it to a facsimile terminal; 9 is an interoffice transfer unit that transmits and receives image signals to and from other storage and conversion devices; 10 and 11; 1 is a facsimile terminal, 12 is a control bus for transmitting control signals from the central processing unit 1 to each unit, and 13 is a data bus through which encoded image signals pass.

When diagnosing a facsimile storage and conversion device, facsimile terminals 10 and 11 are connected to the input and output sides of the facsimile storage and conversion device, as shown in the figure.
A sheet of paper with a test screen written on it is set on the input side facsimile terminal 10, and the test image signal is sent from the terminal 10 to the storage section through the input system devices of the receiving section 2, encoding section 3, and buffer memory section 4. Enter 5. Then, the image signals accumulated here are compared with normal data stored in advance in the central processing unit 1, and the input system device and the central processing unit 1 are
The response data exchanged between the two is compared with normal response data, and the input system device is diagnosed based on the results. In addition, the test image signal is output from the central processing unit 1 to the output side facsimile terminal 11 through the output system devices of the buffer memory unit 6, decoding unit 7, and transmitting unit 8, and the output data and response data obtained at that time are prepared in advance. The output system device is diagnosed by comparing it with the state data obtained, and the normality of the device can be checked based on the discrepancy between the two, and it is also possible to diagnose a faulty location based on the location of the discrepancy.

However, since the test image signal is input by reading a sheet of paper with the test screen written on it using a facsimile terminal, encoded images may be generated due to differences in the state of the paper set in the terminal, dust on the paper, etc. The signal information may be significantly different from that prepared in advance, resulting in lower diagnostic accuracy and the disadvantage that it is not possible to diagnose the inside of the device in detail. In addition, the test image signal sent from the central processing unit via the output system is configured to be received by the facsimile terminal and recorded on paper, but in this type of diagnosis, the screen displayed on the terminal is Since the test results are not important enough to be saved just for checking the results, and the number of tests required is large, they also have the disadvantage of creating a large number of unnecessary screens and wasting paper.

The present invention improves these conventional drawbacks, and its purpose is to improve diagnostic accuracy by making it possible to always input stable test image signals, and by eliminating the need for paper. The aim is to make diagnosis economical. According to the present invention,
This object is achieved by diagnosing a faulty device using a test device having a test facsimile image signal sending function and a facsimile image signal reception monitoring function instead of a facsimile terminal. Examples will be described in detail below.

FIG. 2 is a block diagram of essential parts showing an example of an apparatus for carrying out the method of the present invention, in which the same reference numerals as in FIG. The test device includes a test image signal transmitting means for reading and transmitting a test image signal from a test image signal, a facsimile signal receiving means for receiving a facsimile image signal, and a display section for displaying at least the received image signal.

In the figure, when diagnosing an input system device consisting of a receiving section 2, an encoding section 3, and a buffer memory section 4, the diagnostic program of the central processing section 1 is first started, and a test image signal is sent from the testing device 14. A message from the central processing unit instructs the maintenance personnel to input the information to the receiving unit 2. When the maintenance person operates the operating section of the test device 14 in response, the test image signal stored in the memory section of the test device 14 is read out and input to the receiving section 2 by the test image signal sending means. . The receiving section 2 converts the received analog signal into a digital signal, and the encoding section 3 encodes the digital image signal with redundancy suppression and sends it to the buffer memory section 4. The buffer memory section 4 temporarily stores a certain amount of image signals and then sends them to the storage section 5, where the encoded image signals are stored.

Next, by the action of the diagnostic program, the storage section 5
The image signals accumulated in are transferred to the central processing section 1. This central processing unit 1 contains status data indicating the status of the image signal input section of the facsimile storage and conversion device when the facsimile image signal is normally input, that is, the code when the test image signal is normally received, encoded, and stored. The converted normal data and the response data exchanged between the input system device and the central processing unit 1 during its operation are stored in advance, and the central processing unit 1
compares this status data with the image signal and response data from the storage section 5 to check the normality of the device. If the check result is good, a message indicating that the input device is normal is typed out on an output device (not shown), and if it is abnormal, a message indicating which data is different is typed out.

In addition, when diagnosing an output system consisting of the buffer memory section 6, decoding section 7, and transmission section 8, first the central processing section 1
Start the diagnostic processing program of the central processing unit 1.
The maintenance person is instructed to have the testing device 14 output a facsimile image signal for testing from the central processing section 1 to the transmitting section 8 by a message from . When the maintenance person receives this and operates the operating section of the test device 14, the facsimile image signal sent from the transmitting section 8 is received by the facsimile signal receiving means of the test device 14, and the image signal is displayed on the test device 14. displayed in the section. Therefore, for example, the state data indicating the state of the image signal output section of the facsimile storage/conversion device at the time of sending out the normal image signal stored in the central processing unit 1 in advance, that is, the test image signal, is normally read out, decoded, and transmitted. Decoded normal data in the case of decoding, response data exchanged between the output system device and the central processing unit 1 during the operation, and the test device 1
By comparing the output data outputted in step 4 with the response data, the output system device can be diagnosed. Note that the comparison of response data can be performed by the central processing unit 1.

In this way, when diagnosing input devices, by using the test image signals stored in the memory of the test device, the receiving section can always receive stable image signals regardless of the environmental conditions of the device. 2
can be entered. Further, regarding the diagnosis of the output system device, since the test image signal is received by the test device and the output data is outputted to the display section, the test can be performed without using paper for facsimile image signal output.

FIG. 3 is a main part block diagram showing one embodiment of the test device used in the present invention, in which 16 is the operation section of the test device, 17 is a control section that controls each part of the test device, and 18 is the receiving section 2 and various other parts. A signal transmitting section 19 that transmits and receives signals is a transmitting interface section 20 that has an interface between the receiving section 2 and the monitor section 22.
is a signal receiving section that transmits and receives various signals to and from the transmitting section 8;
21 is a receiving interface section having an interface with the transmitting section 8 and the monitor section 22; 22 is a monitor section for monitoring the transmitted image signal and the received image signal; 23;
24 is a display section that displays the monitored image signal, and 24 is a memory section that stores the test image signal.

When the operation section 16 is set to the transmission mode side, the test image signal stored in the memory section 24 is read out by the action of the control section 17 and sent to the reception section 2 via the signal transmission section 18 and the transmission interface section 19. At the same time, it is added to the display section 23 via the monitor section 22 and displayed there. The purpose of monitoring the transmitted test image signal is to check whether the test image signal is being transmitted normally. Also,
When the operation unit 16 is operated to switch to the reception mode, the image signal from the transmission unit 8 is transferred to the reception interface unit 21 and the signal reception unit 2 by the operation of the control unit 17.
0, and its contents are displayed on the display unit 23.
will be displayed. Note that the display section 23 is, for example, a CRT.
Consists of etc.

As explained above, according to the present invention, when diagnosing an input system device, a test image signal is generated by the test device, so that a stable image signal can always be input to the receiving section of the facsimile storage and conversion device. Therefore, it is possible to create status data for checking test results in device diagnosis to a fairly detailed level, which has the advantage of improving the accuracy of diagnosis. Further, regarding the diagnosis of the output system device, since the test image signal is received and monitored by the test device, no paper is required compared to the conventional example in which the test image signal is received by a facsimile terminal, and the diagnosis can be performed economically.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the main parts of an apparatus for carrying out the conventional method, Fig. 2 is a block diagram of the main parts showing an example of the apparatus for carrying out the method of the present invention, and Fig. 3 is an implementation of the test apparatus used in the present invention. FIG. 3 is a main part block diagram showing an example. 1 is a central processing unit, 2 is a receiving unit, 3 is an encoding unit,
4 and 6 are buffer memory sections, 5 is a storage section, 7 is a decoding section, 8 is a transmitting section, 9 is an inter-office transfer section, 10, 1
1 is a facsimile terminal, 12 is a control bus, 13 is a data bus, 14 is a test device, 16 is an operation unit, 1
7 is a control section, 18 is a signal transmission section, 19 is a transmission interface section, 20 is a signal reception section, 21 is a reception interface section, 22 is a monitor section, 23 is a display section, and 24 is a memory section.

Claims (1)

[Claims] 1. A diagnostic method for a facsimile storage/conversion device that encodes and stores an input image signal, decodes and outputs the stored image signal, and includes a memory section that stores a test image signal, and a memory section that stores the test image signal from the memory section. A test device is provided which has a test image signal sending means for reading and transmitting a test image signal, a facsimile signal receiving means for receiving a facsimile image signal, and a display section for displaying the received facsimile image signal, and the test facsimile image signal is transmitted from the test device. is input into the facsimile storage and conversion device, and the encoded image signal obtained at that time and the response exchanged between the input system device of the facsimile storage and conversion device and the central processing unit of the facsimile storage and conversion device during the input operation. Diagnosis of the input system device is performed by comparing state data consisting of data with the state data previously stored in the central processing unit, and a test image signal is output from the central processing unit to the test device. and displaying the output data obtained at that time on the test device,
and diagnosis of the output system device by comparing response data exchanged between the output system device of the facsimile storage and conversion device and the central processing unit during the output operation with the response data prepared in advance in the central processing unit. A method for diagnosing a facsimile storage and conversion device, characterized in that: