KR100279120B1 - Method for testing operation ata-command in optical disc drive - Google Patents

Abstract

end. TECHNICAL FIELD OF THE INVENTION

Optical disc drive

I. The technical problem that the invention is trying to solve

In the performance test of the ATA command of the ATA optical disk drive in the host computer, the test is performed without the need for additional equipment, and the time required for the test is shortened.

All. Summary of the Solution of the Invention

In the performance test of the ATA command of the ATA optical disc drive in the host computer, whether a preset ATA command is applied to the ATA optical disc drive in the host computer itself, and then the execution of the applied ATA command is possible in the optical disc drive. The test is performed by determining that the operation of the applied ATA command is possible based on a predetermined output value of.

la. Important uses of the invention:

It can be important in the performance test of ATA command of ATA optical disk drive.

Description

METHOD FOR TESTING OPERATION ATA-COMMAND IN OPTICAL DISC DRIVE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc drive, and more particularly, to an operation test method for an ATA command of an optical disc drive.

An optical disk drive (hereinafter referred to as a drive) is a device for recording information on a given information recording medium, ie, an optical disk such as a compact disk (CD), or the like, using optical light such as a laser or the like.

Optical discs, which are usually used for recording information, have a significantly higher information recording density per unit area than magnetic discs, which is a major advantage of the optical disc technology. Optical recording and reproducing systems are also considered to be more reliable for the reasons described below than magnetic disk drives called hard disks. That is, the optical head (optical pickup) used for recording or reproducing information is always located at a distance or more away from the disk compared to the magnetic head, and for this reason, there is no head crash or wear or tear of the surface of the medium. In addition, the optical disk is less adversely affected by foreign matters such as dust or external shock than the magnetic disk.

There are many different types of optical discs or optical disc drives according to recording and playback characteristics, and all such optical disc drives have a loading / unloading mechanism of the optical disc, and a spindle motor required for rotating the optical disc. ), A drive electronic circuit unit for reproducing information from the optical disc under control of the control unit, and a control unit. The control unit manages the flow of commands, the status of various flags, and the transfer of information between the host and drive electronic circuitry, such as a personal computer.

On the other hand, AT standard personal computers, which are widely used in accordance with the American National Standard Institute (ANSI) standard, use a 16-bit Industry Standard Architecture (ISA) data bus. Optical disk drives based on an ATA (AT attachment) (or IDE (Intelligent Drive Electronics)) interface method capable of one-to-one data transfer by directly connecting a 16-bit data bus are being developed. The optical disk drive (hereinafter referred to as ATA driver) according to the ATA interface has a portion in charge of the interface with the host computer, for example, an ATAPI (Advanced Technology Attachment Packet Interface) chip.

On the other hand, during the manufacturing process of the ATA drive, the manufacturer usually tests the operation of the ATA drive for the ATA command, and if the operation of each command is bad, the drive is replaced with a defective part such as replacing the corresponding parts.

However, in order to test the operation of the ATA command of the ATA optical disk drive, a general ATA command test device was used to actually execute each command in the drive and then test the operation of the drive. Therefore, special equipment was required for the test, and test time was required because it was necessary to directly test the performance of the operation.

Accordingly, an object of the present invention is to provide a method for performing an operation test on an ATA command of an ATA optical disk drive without the need for additional equipment.

Another object of the present invention is to provide a method for shortening the time required for performing an operation test on an ATA command to an ATA optical disk drive.

In order to achieve the above object, the present invention, in the performance test of the ATA command of the ATA optical disk drive in the host computer, applying the ATA command preset in the host computer itself to the ATA optical disk drive, and then in the optical disk drive The test is performed by determining that the operation of the applied ATA command is possible based on a predetermined output value of whether or not the applied ATA command is executable.

1 is a view for explaining the operation of the A.T (ATA) command operation of the optical disk drive according to an embodiment of the present invention.

FIG. 2 is a control flowchart of an A.T command operation test process of the optical disk drive in the host of FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific matters such as specific ATA commands and test progress are shown, which are provided to help a more general understanding of the present invention, and such specific matters may be changed or changed within the scope of the present invention. It will be obvious to those of ordinary skill in the art.

1 is a view for explaining an operation test for the ATA command of the optical disk drive according to an embodiment of the present invention. In FIG. 1, for convenience of description, the host 10 is set as an ATA personal computer, and the optical disk drive 20 is set as an ATA CD-ROM (Read Only Memory) drive. As shown in FIG. 1, a communication port part is usually provided as a port A 12 and a port B 14 in the host 10, and the port 10 is connected to the drive 20 through any one of these port parts. When the host 10 issues an ATA command (ATA-COM) to the drive 20 through the port, the drive 20 sends a corresponding return value (RETURN-VAL) back to the host 10 through the connection port.

FIG. 2 is a control flowchart of an ATA command operation test procedure of an optical disk drive in the host of FIG. 1, and the test will be described in more detail with reference to FIGS. 1, 2, and Table 1 below.

An example of the types of ATA commands and the OP code are shown in Table 1 below.

ATA-COM OP-CODE :: :: READ 28h : : READ CD-ROM CAPACITY 25h READ CD BEh READ CD MSF B9h READ HEADER 44h READ SUB-CHANNEL 42h READ TOC 43h :: ::

Table 1 shows the main commands among the ATA commands related to READ, but there are many other ATA commands.

When performing the test, the list of main commands among the ATA commands and the OP codes shown in Table 1 above are set in advance according to the features of the present invention for testing and stored in the internal predetermined buffer memory of the host, or stored in the test program.

Referring to FIG. 2, first, the host 10 loads a list of ATA commands (ATA-COM) to be tested in step 30. Then, in step 32, apply ATA-COM to the drive through the port for the first test. In the ATA personal computer host 10, the addresses of ports A12 are set to 1F0 to 1F7, and the addresses of ports B14 are usually set to 170 to 177, and each port is 8 bits. The ATA-COM is usually applied through a port of 1F0 / 170. As shown in FIG. 1, in one embodiment of the present invention, the signal is applied through a port of 1F0. At this time, the commonly applied ATA command is 12 bytes. Referring to Table 1, if the "READ" command is previously set as the command to be applied first, the OP code of 28h is applied through the port 1F0, and the detailed designation command to be subsequently applied is "0" or "1" or dummy. The dummy data pattern can be applied. This is because the present invention is not to perform the actual command, but merely to determine whether it is possible or impossible to perform the operation for the command, it is not necessary to apply a specific command.

In step 34, the host 10 checks the BUSY status of the drive 20. Busy state refers to a state in which the drive 20 continues to operate for a certain time. A busy state, that is, a time required to perform an operation for an authorized command requires more time than an error in the operation of the drive 20. It makes sense. Therefore, after the command is applied, the busy state of the drive 20 is checked to confirm that the operation is performed correctly. The normal operation determination time for checking the busy state is appropriately set in advance. This check of busy state can be done by host 10 checking port 7 of the value applied from drive 20 through port 1F7 / 177. If the value of bit 7 is "0", it is not busy and the bit value is "1". "Means busy status. If the drive 20 is busy, the host 10 determines this in step 36 and proceeds to step 38 to process the busy error of the drive 20. Such busy error processing may be performed by displaying it through a predetermined display device.

If the drive 20 is not busy, then the host 10 checks the return value of the drive 20 for the authorized ATA-COM in step 40. The return value for the ATA-COM can be checked through the port 1F7 / 177. When a value of "50h" or "51h" is output to the port, it is determined as a normal return value. Normally, the drive 20 outputs a value of "50h" as a return value when a normal operation is performed on an authorized command, and outputs a value of "51h" as a return value when an error occurs during the operation. In the present invention, if such a return value is applied, the drive 20 determines that an operation for the corresponding command is possible. For example, the drive 20 may not perform a normal operation with respect to the applied "READ" command. This is because the command applied after the OP code is a data pattern set without meaning. Drive 20 will then output "51h" to port 1F7 / 177. If the drive 20 does not perform any operation for the applied command, a value other than "50h" or "51h" is output to the port 1F7 / 177. That is, the present invention tests the operability of the command only by recognizing the command of the drive 20.

Meanwhile, in the process of checking the return value in step 40, the value of port 1F2 / 172 may be further checked. When the drive 20 completes the operation of the command, the drive outputs a value of "03h" as the operation completion value to the port, so that the operation state of the drive 20 can be determined by checking whether the value is output.

As described above, if the return value is normal in step 42, the host 10 proceeds to step 44, and proceeds with the execution of the currently tested ATA-COM. If the return value is abnormal, proceeds to step 46. The ATA-COM under test is treated abnormally and proceeds to step 48. The above normal or abnormal processing may be performed by writing it to an internal predetermined memory of the host 10 and displaying it on the predetermined display device.

In step 48, the host 10 determines whether the currently tested ATA-COM is the last command recorded in the test list. If not, the host 10 proceeds to step 50 and applies the next test ATA-COM to the drive 20. For example, if the list to be tested is shown in Table 1, then ATA-COM becomes "READ CD-ROM CAPACITY". After that, the test process is repeated from 34 to 44 above.

On the other hand, if the host 10 finishes the operation according to the above process for all the ATA-COM recorded in the test list, the host 10 determines this in step 48 and proceeds to step 52 to display the mode ATA-COM test result on the display device. Perform result processing.

In the same manner as described above, the host performs an operation test on the ATA command of the optical disk drive.

As described above, according to the present invention, in the operation performance test for the ATA command of the ATA optical disk drive in the host computer, the ATA command preset in the host computer itself is applied to the ATA optical disk drive, and then the applied ATA in the optical disk drive. Since the test is performed by determining that the authorized ATA command can be performed based on a predetermined output value of whether the command is executable or not, the test can be performed without the need for additional equipment. This has the advantage of reducing the time.

Claims (7)

In the test method for performing the operation of the Advanced Technology Attachment (ATA) command of the optical disk drive in the host computer, Pre-setting a command to be tested among the commands and storing it in an internal memory; Sequentially applying the stored commands to the optical disc drive; Checking a preset output value of whether the optical disk drive is capable of performing the applied command; And determining that the optical disk drive can perform an operation on the applied command based on the confirmation of the predetermined output value. The method of claim 1, Performing a busy error process on the optical disk drive when the optical disk drive is busy, after a predetermined time is passed according to a time required for normal operation after applying a command to be tested with the optical disk drive Test method, characterized in that further added. The method of claim 1, And displaying the information on the test process or the result through a predetermined display device. In the method of testing the performance of the operation of the Advanced Technology Attachment (ATA) command of the optical disk drive through a port in the host computer, Pre-setting a command to be tested among the commands and storing it in an internal memory; Sequentially applying the stored commands to the optical disk drive through the port; Checking a predetermined busy state output value indicating a busy state of the optical disc drive through the port; Processing the busy state error by the optical disk drive based on the confirmation of the busy state output value; Confirming, through the port, a predetermined result output value of whether the optical disk drive can perform the applied command; Determining that the optical disk drive can perform an operation on the applied command based on the confirmation of the predetermined result output value; And a process of outputting the determination process or result information through a predetermined display device. The test method according to claim 4, wherein the address of the port is 1F0 to 1F7 or 170 to 177. 6. The method of claim 5, wherein the predetermined output value of whether the optical disk drive can be performed is a value output to 1F7 or 177 of the ports, and includes "50h" for performing an operation or "51h" for performing an operation. Test method characterized in that. The test method as claimed in claim 5, wherein the predetermined output value of whether the operation is possible is a value output from 1F2 or 172 of the ports, and includes “03h” indicating completion of operation.

Images