KR0167653B1 - Examination device and method of cd-rom drive - Google Patents

Abstract

The present invention relates to an automatic image reproducing apparatus and method of a CD-ROM drive for determining the goodness of the assembled CD-ROM drive, and the present invention automatically connects a CD-ROM drive and a microcomputer to be transferred to an inspection apparatus. When the CD-ROM drive is automatically driven and the image data of the image inspection disk driven by the CD-ROM drive is automatically input to the micom, the micom is the image data and the reference image data stored in the micom. Since it is possible to determine the goodness of the CD-ROM drive in comparison with the above, reliable inspection can be made, inspection time can be shortened, and cost reduction due to the automation facility can be achieved.

Description

Automatic Image Inspection Device and Method of CD-ROM Drive

1 is a block diagram showing an image inspection apparatus of a conventional CD-ROM drive.

2 is a flowchart illustrating an image inspection method of a conventional CD-ROM drive.

3 is a block diagram showing an automatic image inspection apparatus of a CD-ROM drive according to the present invention.

4 is an internal block diagram of a microcomputer according to the present invention.

5 is an internal block diagram of a checksum inspection unit according to the present invention.

6 is a flowchart illustrating an automatic image inspection method of a CD-ROM drive according to the present invention.

* Explanation of symbols for main parts of the drawings

11: CD-ROM drive 12: disk for image inspection

13: micom 14: checksum inspection unit

15 monitor 21 conveyor

22: pallet 23: stopper

24: button pressing device 25: pneumatic pad

26: pneumatic cylinder 27: power cable

28: interface cable 29: PLC

30 memory unit 31 control unit

32: checksum calculation unit 33: the first buffer

34: checksum comparison unit 35: second buffer

The present invention relates to an apparatus and method for inspecting a CD-ROM drive, and more particularly, to an apparatus and a method for automatically reproducing a CD-ROM drive for determining the goodness of the assembled CD-ROM drive.

The present invention relates to an automatic image inspection device and method for a CD-ROM drive for checking the goodness of an image taken from an inspection disc.

In general, as a storage medium for storing information, records, magnetic tapes, magnetic disks, and the like have been common. However, in recent years, a compact disk (hereinafter referred to as a CD) that is easy to store and stores a large amount of data is music. It was developed for dragons and is attracting attention by music lovers.

In addition, a CD-ROM capable of storing a large amount of data for use in a computer has been developed and marketed. The CD-ROM stores video, audio, text information, and the like.

In order to read the information stored in the CD-ROM on a computer, a CD-ROM drive capable of recognizing the contents of the CD-ROM is required. The assembled CD-ROM drive undergoes various inspection processes. It must be passed before it can be sold.

The inspection process includes an audio inspection process, an image inspection process, a defect correction inspection process of a disc, and the like. A conventional CD-ROM drive inspection apparatus includes a CD-ROM drive 1 to be inspected as shown in FIG. Is supplied to the jig (2) to be seated, and the CD-ROM drive (1) seated on the jig (2) through a power cable (3) and the audio signal output from the CD-ROM drive (1) It is composed of a microcomputer 6 which is input via an audio cable 4 and exchanges control commands and data through the CD-ROM drive 1 and an interface cable 5.

In addition, the micom 6 has a built-in software for driving the CD-ROM drive 1, the CD-ROM drive inspection device monitors 7 to display an image under the control of the microcomputer (6) And a key input unit 8 for providing an operator's command to the microcomputer 6 to start the software embedded in the microcomputer 6.

The inspection apparatus of the conventional CD-ROM drive configured as described above includes a first process of seating the CD-ROM drive 1 to be examined on the jig 2, as shown in the flowchart shown in FIG. A second step of connecting the power cable 3, the audio cable 4, and the interface cable 5 between the ROM drive 1 and the microcomputer 6; A third step of inserting the CD-ROM drive, a fourth step of the operator driving the software embedded in the microcomputer 6 using the key input unit 8, and the CD-ROM drive 1 through the microcomputer 6; The fifth step of determining whether the video data output from the is good.

In the third process, the operator presses the close / open key of the CD-ROM drive 1, and when the disc drawer of the CD-ROM drive 1 is opened, the disc is placed on the disc drawer for image inspection. Pressing the key once more closes the disc drawer.

Further, in the fifth process, when the CD-ROM drive 1 is driven in the fourth process and the image reproduced by the CD-ROM drive 1 is displayed on the monitor 7, it is determined whether the image is good.

That is, if a defective state of the screen is detected, such as screen stop, screen slow, or broken screen, the defective product is checked and waited for repair, and if the screen state is good, the process proceeds to the next step.

However, the above-described conventional technique is difficult to take out a defective product by judging the goodness of the CD-ROM drive by the operator repeatedly performing the manual work, the productivity is low because the inspection time is long, and the CD-ROM is expensive because labor is expensive There was a problem that the production cost of the drive rises.

Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, by performing an image inspection of the CD-ROM drive automatically, a reliable inspection is made, the inspection time is shortened and the production cost is low CD- The purpose of the present invention is to provide an automatic image inspection apparatus and method of a ROM drive.

The automatic image inspection apparatus of the CD-ROM drive of the present invention for achieving the above object is a CD-ROM drive transfer means for transferring the CD-ROM drive to be tested to the inspection apparatus, and the image inspection disk in the CD-ROM drive And a disk supply unit for providing an image inspection disk in the CD-ROM drive, driving the CD-ROM drive, controlling the CD-ROM drive moving unit and the disk supply unit, and outputting the image from the image inspection disk. A microcomputer for comparing data with reference image data, and detecting an error between the image data and the checksum of the image inspection disk output from the CD-ROM drive and outputting the image data output from the image inspection disk to the microcomputer. Characterized in that it consists of a checksum inspection unit.

In addition, the automatic image inspection method of the CD-ROM drive according to the present invention includes the first step of transferring the CD-ROM drive to be inspected to the position of the inspection apparatus, connecting a microcomputer to the CD-ROM drive, A second process of supplying, a third process of determining whether image data of an image inspection disk output through the CD-ROM drive is good by driving the CD-ROM drive, and the image inspection in the CD-ROM drive And a fifth step of separating the CD-ROM drive from the microcomputer and separating the bad CD-ROM drive from the good CD-ROM drive.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The automatic image inspection apparatus of the CD-ROM drive according to the present invention includes a CD-ROM drive transfer means for transferring the CD-ROM drive 11 to be inspected as shown in FIGS. 3 and 4, and A disc supply unit for providing an image inspection disk 12 to the CD-ROM drive 11 and a CD-ROM drive 11 when the image inspection disk 12 is provided to the CD-ROM drive 11. And a microcomputer 13 for controlling the CD-ROM drive transfer means and the disc supply unit, and comparing the image data output from the image inspection disk 12 with the reference image data.

In addition, an error between the image data of the image inspection disk 12 output from the CD-ROM drive 11 and the checksum is detected, and the image data output from the image inspection disk 12 to the micom 13. And a monitor 15 for displaying an automatic image inspection process of the CD-ROM drive 11 under the control of the microcomputer 13.

The CD-ROM drive conveying means includes a pallet 21 for conveying the CD-ROM drive 11 to each process, and a pallet 22 on which the CD-ROM drive 11 conveyed by the conveyor 21 is seated. And a stopper 23 controlled by the microcomputer 13 to stop the pallet 22. Here, the stopper 23 is composed of a pneumatic cylinder.

In addition, the disc supply unit holds the button press device 24 for pressing the open / close key of the CD-ROM drive 11 and the image inspection disc 12 under the control of the microcomputer 13 and then the CD- It consists of a disk loading means for seating the image inspection disk 12 in the disk drawer of the ROM drive 11 and separates the image inspection disk 12 from the disk drawer.

Here, the button pressing device 24 is a pneumatic cylinder, the disc loading means is a pneumatic pad 25 for holding the disk 12 for the image inspection, and the pneumatic pad 25 to the CD-ROM drive ( It consists of the pneumatic cylinder 26 which moves back and forth 11).

In addition, the microcomputer 13 supplies power to the CD-ROM drive 11 through a power cable 27 and exchanges control commands and data with the CD-ROM drive 11 through an interface case 28. It is.

The microcomputer 13 drives a solenoid valve to control a position of the pneumatic pad 25 and the pneumatic cylinder 26 of the stopper 23, the button pressing device 24 and the disk loading means (hereinafter, referred to as a programmable logic controller). 29), a memory unit 30 in which an operation program, an inspection program, and reference image data of the inspection apparatus are stored, and programs stored in the memory unit 30 are started and monitored (15). The control unit 31 for controlling the is included.

In addition, the PLC 29 is connected to the control unit 31 through the RS-232C protocol so that the control unit 31 can know the control status of the PLC (29). In addition, the PLC 29 drives the power cable 27 and the interface cable 28 to control the control unit 31 and the CD-ROM drive 11 to be connected.

As shown in FIG. 5, the checksum checking unit receives a checksum calculation unit 32 that receives image data of the image inspection disk 12 output from the CD-ROM drive 11 and obtains a checksum, and the CD- A first buffer 33 temporarily storing a checksum of the image inspection disk 12 output from the ROM drive 11, and a signal output from the checksum calculator 14 and the first buffer 33 And a checksum comparison unit 34 for comparing and detecting the error of the checksum, and a second buffer 35 for transmitting the video data to the microcomputer 13 under the control of the checksum comparing unit 34.

The operation and effects of the automatic image inspection apparatus of the CD-ROM drive according to the present invention configured as described above will be described in detail as follows.

First, in the automatic image inspection method of the CD-ROM drive 11 according to the present invention, when the operator turns on the main power and the inspection apparatus is activated, the operation program of the inspection apparatus built in the memory unit 30 of the microcomputer 13 It runs and carries out its own diagnosis of each part.

5 is a flow chart of the inspection method according to the present invention. The first process of transferring the CD-ROM drive 11 to be inspected to the position of the inspection apparatus, and the microcomputer in the CD-ROM drive 11 And a second process of connecting the 13 and supplying the image inspection disk 12.

In addition, a third process of determining whether the image data is good by driving the CD-ROM drive 11, and taking out the image inspection disk 12 from the CD-ROM drive 11, the CD-ROM drive ( And a fifth process of separating 11) from the microcomputer 13, and a fifth process of separating the bad CD-ROM drive and the good CD-ROM drive.

The first process is a first step of initializing the inspection apparatus and checking for errors, a second step of detecting the pallet 22 conveyed by the conveyor 21 and the CD-ROM drive 11 to be inspected, and the PLC (29) raises the stopper (23) by operating the solenoid valve, and comprises a third step of stopping the pallet (22).

In this case, the PLC 29 transmits the control status as described above to the microcomputer 13, and the microcomputer 13 transmits the control status of the PLC 29 to the monitor 15 to be displayed. In addition, the monitor 15 is controlled by the microcomputer 13 and displays each process during the inspection.

The second process is a first step in which the PLC 29 drives the solenoid valve to connect the power cable 27 and the interface cable 28 to the CD-ROM drive 11, and the PLC 29 button The second step of opening the disc drawer by advancing the pressing device 24 and then reversing it so that the button pressing device 24 presses the open / close key of the CD-ROM drive 11.

In the second process, the pneumatic cylinder 26 moves forward with the PLC 29 driving the disk loading means so that the pneumatic pad 25 holds the image inspection disk 12. A third step of seating (12) on the disc drawer, and the PLC (29) advances the button presser (24) and then moves backward so that the button presser (24) opens the CD-ROM drive (11). The fourth step is to close the disk drawer by pressing the / close key.

In the third process, a CD-ROM drive driving program embedded in the microcomputer 13 is operated to draw out a control command to the interface cable 28 so that the CD-ROM drive 11 is driven. In the second drive, image data of the image inspection disk 12 is read from the ROM drive 11 and a checksum of the image inspection disk 12 is detected.

In the third process, when the image data passes through the checksum calculator 32 and the checksum of the image data is calculated, the checksum of the calculated image data and the checksum temporarily stored in the first buffer 33 are compared with the checksum. If there is no error between the third step and the checksum of the image data and the checksum of the image data, the image data is transmitted to the microcomputer 13 to transmit the image data and the reference image data stored in the microcomputer 13. And a fifth step of detecting whether the image data and the checksum output from the CD-ROM drive 11 are output within a predetermined time.

In addition, in the fourth process, the PLC 29 drives the solenoid valve to move the button press device 24 forward and then backwards so that the button press device 24 opens / closes the CD-ROM drive 11. The first step of opening the disk drawer by pressing and the PLC 29 advances the pneumatic cylinder 26, and then drives the pneumatic pad 25 to hold the image inspection disk 12 and the pneumatic In the second step, the pad 25 is retracted while holding the image inspection disk 12.

In the fourth process, the PLC 29 advances the button pressing device 24 and then moves backward so that the button pressing device 24 presses the open / close key of the CD-ROM drive 11. The third step of closing the drawer, and the PLC 29 drives the solenoid valve to take out the power cable 27, the interface cable 28 from the CD-ROM drive (11).

Finally, in the fifth process, the PLC 29 drives the solenoid valve to lower the stopper 23, and the CD-ROM drive 11 passed in the image inspection process is transferred to the next process. The CD-ROM drive 11 failed in the image inspection process is composed of a second step of transferring the defective product taking out process and a third step of performing an error check of the inspection apparatus and preparing for inspection of the next transferred CD-ROM drive. .

As described above, the present invention automatically connects the CD-ROM drive and the microcomputer to be transferred to the inspection apparatus, and automatically drives the CD-ROM drive, and the image data of the image inspection disk driven by the CD-ROM drive. Is automatically input to the microcomputer, the microcomputer can determine the goodness of the CD-ROM drive by comparing with the video data and the reference video data stored in the microcomputer. This is shortened, there is an effect that can achieve the cost savings due to automated equipment.

Claims (8)

CD-ROM drive transfer means for transferring the CD-ROM drive to be tested to the inspection apparatus, a disc supply unit for providing an image inspection disk in the CD-ROM drive, and an image inspection disk in the CD-ROM drive. A microcomputer that drives the CD-ROM drive, controls the CD-ROM drive transfer unit and the disk supply unit, compares the image data output from the image inspection disk with the reference image data, and the image output from the CD-ROM drive. And a checksum inspection unit which detects an error between the image data of the inspection disk and the checksum, and outputs the image data output from the image inspection disk to the microcomputer. The apparatus of claim 1, wherein the disc supply unit presses an open / close key of the CD-ROM drive under the control of the microcomputer, and holds the image inspection disk, and then displays the image in the disc drawer of the CD-ROM drive. And a disk loading means for seating an examination disk and separating the examination examination disk from the disk drawer. The automatic image of the CD-ROM drive of claim 1, wherein the microcomputer supplies power to the CD-ROM drive through a power cable and exchanges control commands and data with the CD-ROM drive through an interface cable. Inspection device. The checksum checker of claim 1, wherein the checksum checker receives an image data of an image inspection disk output from the CD-ROM drive and obtains a checksum, and a checksum of the image inspection disk output from the CD-ROM drive. A first buffer for temporarily storing the first buffer, a checksum comparison unit detecting a checksum error by comparing a signal output from the checksum calculator and the buffer, and transmitting the image data to the microcomputer under the control of the checksum comparison unit. Automatic image inspection apparatus for a CD-ROM drive, characterized in that the second buffer. A first process of transferring the CD-ROM drive to be inspected to a position of the test apparatus, a second process of connecting a microcomputer to the CD-ROM drive and supplying an image inspection disk, and driving the CD-ROM drive to A third step of determining whether the image data of the image inspection disk output through the CD-ROM drive is good; and a fourth step of removing the image inspection disk from the CD-ROM drive and separating the CD-ROM drive from the microcomputer. And a fifth step of separating the bad CD-ROM drive from the good CD-ROM drive. The method of claim 5, wherein the second process comprises: a first step in which a power cable and an interface cable are connected to a CD-ROM drive from a microcomputer, and a second step of opening a disc drawer by pressing an open / close key of the CD-ROM drive; And a third step of seating the image inspection disk in the disc drawer, and a fourth step of closing the disc drawer by pressing the open / close key of the CD-ROM drive. Imaging test method. The method of claim 5, wherein the third process comprises: a first step of the microcomputer driving the CD-ROM drive; a second step of detecting the image data and the checksum of the image inspection disk output from the CD-ROM drive; A third step of comparing the checksum with the calculated checksum of the image data; and a fourth step of comparing the image data with reference image data embedded in the microcomputer if there is no error between the checksum of the image data and the checksum. Automatic image inspection method of the CD-ROM drive, characterized in that made. The automatic image inspection method of claim 7, wherein the third process comprises a fifth step of detecting whether image data output from the CD-ROM drive is output within a predetermined time. .