JP2908142B2 - Microcomputer automatic inspection equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic microcomputer inspection apparatus, and more particularly to an apparatus for confirming microcomputer operation by image input.

[0002]

2. Description of the Related Art In a conventional microcomputer automatic inspection apparatus, there are many parts that are visually checked by a human in parts such as condition setting and determination.

FIG. 3 is a block diagram of a microcomputer automatic inspection apparatus showing an example of such a prior art. As shown in FIG. 3, the conventional microcomputer automatic inspection apparatus includes an in-circuit emulator 1 for emulating a microcomputer, an in-circuit emulator control means 2 for controlling the in-circuit emulator 1, and a target microcomputer. A jig 8 incorporating an in-circuit emulator therein, a jig simulation signal control circuit 9 for simulating an external signal necessary for operating the jig 8, and a control means 2 for controlling the in-circuit emulator 1. And a microcomputer inspection process control means 3 for controlling both the jig simulation signal control circuit 9 and
An inspection procedure file 5 indicating the inspection procedure of the microcomputer inspection step control means 3, an inspection expected value file 6 for the in-circuit emulator, and a storage for controlling the microcomputer inspection step control means 3 and the like by the data of these files 5 and 6. It has a control circuit 4 and an inspection result file 7 for filing inspection results via the storage control circuit 4. In particular, the storage control circuit 4 includes the microcomputer inspection process control means 3
The generated inspection result is filed in the inspection result file 7.

[0004]

The above-mentioned conventional microcomputer automatic inspection apparatus checks the inspection result by using a register, trace information, and the like of the CPU included in the in-circuit emulator. However, since the storage capacity of the trace information is small, in the inspection, the result of the external measuring instrument, the display of the jig, or the confirmation of the operation of the mechanical part are visually checked by a human. Further, since the inspection is repeated when a bug occurs, inspections performed by human eyes are performed many times.

It is an object of the present invention to provide an automatic microcomputer inspection apparatus capable of minimizing such visual inspection by a human.

[0006]

An automatic inspection apparatus for a microcomputer according to the present invention comprises an in-circuit emulating a microcomputer.
· An emulator and a microcomputer that controls the emulator, etc.
Inspection process control means and an inspection procedure that stores the inspection procedure
A sequential file and an inspection result file for storing the inspection results.
File, said microcomputer inspection process control means, said inspection means
Sequential file, storage system connected to the inspection result file
The microcomputer automatic test equipment that includes a control circuit, the first frame memory times to memorize the images information on any coordinate
Path and the data of the first frame memory circuit are inspected.
In order to set a waiting value, a file is stored via the storage control circuit.
A frame memory inspection expected value file;
The inspection expected value flag for the frame memory is controlled by a control circuit.
Second frame memory for storing expected value data of a file
And a dot number comparison / determination means for comparing the number of dots of image information stored in the first and second frame memory circuits , wherein the first and second frame memories
The same range of image information at different times to be taken into the circuit
And the output is compared with the
Via the control process control means and the storage control circuit
It is configured to be stored in the inspection result file .

[0007]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a microcomputer automatic inspection apparatus showing one embodiment of the present invention. As shown in FIG. 1, this embodiment employs an in-circuit microcomputer for emulating a microcomputer.
Emulator 1 and in-circuit emulator control means 2 for controlling in-circuit emulator 1
A jig 8 incorporating an in-circuit emulator in place of a target microcomputer; a jig simulation signal control circuit 9 for simulating an external signal necessary for operating the jig 8; Control means 3 for controlling microcomputer and jig simulation signal control circuit 9
A storage control circuit 4 connected to the control means 3 for performing control for storing test results, etc .; a test procedure file 5 for storing test procedures; and a test expected value of the in-circuit emulator 1. An inspection expected value file 6 for an in-circuit emulator to be stored and an inspection result file 7 for storing inspection results via the storage control circuit 4 are provided. The configuration so far is the same as the above-described conventional example of FIG. In the present embodiment, in addition to these, a portion indicated by a dotted frame A is added.

That is, in the present embodiment, the camera 10 for reading the display portion of the jig 8 and the first and second cameras are provided.
Frame memory circuits 11 and 12, a dot number determination circuit 13 for comparing the number of dots from the frame memory circuits 11 and 12, and a frame memory test expectation value for storing the frame memory test expectation value. Value file 14.

First, in the first inspection, the display portion of the jig 8 is read by the camera 10 and stored in the first frame memory circuit 11. The data stored in the frame memory 11 is stored in the frame memory inspection expected value file 14 via the storage control circuit 4.

Next, in the second inspection, the data of the inspection expected value file for frame memory 14 is supplied to the second frame memory circuit 12 via the storage control circuit 4. As a result, the dot number comparison / determination means 13 converts the image information of the first frame memory circuit 11 that stores the display portion of the jig 8 input from the camera 10 and the image information of the second frame memory circuit 12 into dots. Compare by unit. Based on the comparison result, the dot number comparison / determination means 13 controls the microcomputer inspection process control means 3, so that the in-circuit / emulator control means 2 and the jig simulation signal control circuit 9 are controlled.

The microcomputer inspection step control means 3 performs an inspection based on the procedure stored in the inspection procedure file 5 via the storage control circuit 4. Moreover, the information obtained by the microcomputer inspection process control means 3 is compared with the data from the inspection expected value file 6 for the in-circuit emulator and the information from the inspection expected value file 14 for the frame memory,
The result is stored in the inspection result file 7. Therefore, the inspection result file 7 stores data different from the conventional example.

FIG. 2 is a diagram showing an example of the effective range of the dot number comparing and judging means in FIG. As shown in FIG. 2, a solid line frame 15 represents the range of the entire frame memory.
A dotted frame 16 indicates an effective range of the dot number comparison and determination means 13. Here, “82.1 MHz” indicating the frequency and F
The location indicating M / AM is the effective range of the dot number comparison and determination means 13. Therefore, the METAL display 17 of the cassette not in this effective range is ignored. Thus, in this embodiment, not only the comparison of the entire frame memory but also the comparison of only a part of the frame memory is effective.

In short, in this embodiment, the camera 10 captures image information in the same range on arbitrary coordinates at different times, and stores it at the first and second frame memory circuits 11.
And 12. The number of dots of the image information stored in these two frame memory circuits 11 and 12 is compared by the dot number comparison and determination means 13. The result of this comparison is stored in the inspection result file 7 via the storage control circuit 4.

In this embodiment, an example in which two frame memory circuits are used has been described. However, a configuration using three or more frame memory circuits can be similarly realized.

[0016]

As described above, the microcomputer automatic inspection apparatus of the present invention performs the visual inspection of the inside of the microcomputer and the results of the external measuring instrument, the display of the jig or the operation of the mechanical part by the human eyes. Since it is only necessary to create the expected value data once for a given item, it is possible to automatically perform all inspections that are repeated due to the occurrence of a bug.

[Brief description of the drawings]

FIG. 1 is a block diagram of a microcomputer automatic inspection apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of an effective range of a dot number comparison determination unit in FIG. 1;

FIG. 3 is a block diagram of a microcomputer automatic inspection apparatus showing an example of the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 In-circuit emulator 2 In-circuit emulator control means 3 Microcomputer inspection process control means 4 Storage control circuit 5 Inspection procedure file 6 Inspection expected value file for in-circuit emulator 7 Inspection result file 8 Jig 9 Jig simulation signal control circuit DESCRIPTION OF SYMBOLS 10 Camera 11 1st frame memory circuit 12 2nd frame memory circuit 13 Dot number comparison determination means 14 Expectation value file for frame memory inspection

Claims (1)

(57) [Claims] An in-circuit for emulating a microcomputer.
To control the emulator and the emulator, etc.
A microcomputer inspection process control means and an inspection procedure storing inspection procedures.
An inspection procedure file and an inspection result for storing the results of the inspection.
Result file, the microcomputer inspection process control means, the inspection
Inspection procedure file, record connected to the inspection result file
In a microcomputer automatic inspection device equipped with a memory control circuit,
Test a first frame memory circuit remembers the images information on any coordinate, the data of the first frame memory circuit
In order to obtain the expected value,
Frame memory inspection expected value file
Expectation of inspection for frame memory by control of memory control circuit
The second frame method for storing the expected value data of the value file
And Mori circuit, and a first and second frame memory circuit dot number comparison determination means for comparing the number of dots stored image information <br/>, the first and second frame main
The same range of image information at different times
The comparison is made by the dot number comparison judging means, and the output is
Via a microcomputer inspection process control means and the storage control circuit
And automatically storing the result in the inspection result file .