KR20060085514A - Recording and regeneration test system of optical disc drive having wireless communication module and method thereof - Google Patents

Abstract

The present invention relates to a recording and reproducing test system of an optical disc drive, characterized in that one computer and at least one optical disc drive are connected by a wireless communication module.

As described above, the system of the present invention can test several optical disk drives at the same time with one PC, thereby saving space and operating time, improving a test environment, and efficiently managing information of test results.

ODD, Disc, Drive, Wireless Communication

Description

Recording and regeneration test system for optical disc drive having wireless communication module and recording / reproduction test method thereof             

1 is a schematic diagram of a wireless communication test equipment according to an embodiment of the present invention.

2 is a block diagram of a wireless communication module according to an embodiment of the present invention.

3 is a flowchart showing a recording test method according to an embodiment of the present invention.

4 is a flowchart illustrating a regeneration test method according to an embodiment of the present invention.

{Description of Major Symbols in Drawings}

100: main computer 110: PC wireless communication module

120a ~ 120n: Wireless communication module for optical disk drive

130a to 130n: optical disc drive 210: wireless communication unit

220: buffer 230: central processing unit

240: ATAPI interface 250: ATAPI communication unit

The present invention relates to a recording and reproducing test system for an optical disc drive having a wireless communication module and a recording / reproducing test method thereof. It is about how to test efficiently by operating a drive.

Until now, the recording medium may be a magnetic recording tape, a laser disk or a compact disk as an optical disk, and a digital video disk produced with a large capacity for storing information.

Among these recording media, optical discs use digital recording method that is different from conventional magnetic recording method, and because they have very small volume and weight, they are very efficient for storage and movement. Is very high.

However, in any product, the manufactured product should be able to be used without any defects, and if problems with the quality of the product occur, it will reduce the trust of the producer who produced the product.

The same holds true for optical discs. In particular, optical discs with very fine signal characteristics have resulted in poor quality due to scratches, mold defects, fingerprints, and foreign matter adhered during the manufacturing process.                         

The optical disc thus manufactured is then subjected to quality inspection as a next step and then shipped to the optical disc market.

When performing a QA (Quality Assurance) test of the developed optical disc drive recorder, it is common to test tens or hundreds of drive samples in the same number of PCs. In this case, many PCs are required, test results must be collected, and each PC needs to be operated, which requires a lot of time and manpower.

In addition, the use of multiple PCs has a problem that the test environment is poor due to lack of test space and the increase of the atmospheric temperature due to the temperature of the PC. As a result, the test method of the conventional optical disk drive has considerable economic and environmental problems.

The present invention has been made to solve the above problems, an object of the present invention is to provide a system and a test method capable of efficient testing by connecting a plurality of optical disk drive and a PC by wireless communication.

In order to achieve the above object, a recording and reproducing test system of an optical disc drive including a wireless communication module of the present invention is characterized in that one computer and at least one optical disc drive are connected by a wireless communication module.                     

In the present invention, the wireless communication module is preferably provided with a wireless communication module, characterized in that each having a unique ID number.

In the present invention, the wireless communication module includes a wireless communication unit for receiving a command and an ID number transmitted from a computer; A central processing unit receiving the transmitted command and ID number; A buffer unit for storing data; And an interface for communicating with the optical disk drive.

In the present invention, the data to be recorded on the optical disk drive is preferably generated and transmitted by the central processing unit.

In the present invention, the interface is preferably composed of an ATAPI communication unit.

A recording test method for an optical disk drive having a wireless communication module of the present invention comprises the steps of: transmitting a recording command and an ID number of the optical disk drive to receive the recording command in a computer; Generating random data and transmitting it to an optical disk drive; Recording the random data on an optical disc; Generating an error code if an error occurs; And transmitting the error code to the computer.

In the present invention, the random data is preferably temporarily stored in a buffer and then transmitted to the optical disk drive.

In the present invention, it is preferable that the computer and the optical disc drive transmit and receive data wirelessly.

A recording test method for an optical disk drive having a wireless communication module of the present invention comprises the steps of: transmitting a playback command and an ID number of an optical disk drive to receive the playback command from a computer; Transmitting the playback command to an optical disc drive; Playing the optical disc; Generating an error code if an error occurs; And transmitting the error code to the computer.

In the present invention, it is preferable that the computer and the optical disc drive transmit and receive data wirelessly.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In adding reference numerals to components of the following drawings, it is determined that the same components have the same reference numerals as much as possible even if displayed on different drawings, and it is determined that they may unnecessarily obscure the subject matter of the present invention. Detailed descriptions of well-known functions and configurations will be omitted.

1 is a schematic diagram of wireless test equipment in accordance with an embodiment of the present invention.

In the always-on embodiment, the wireless test equipment is provided with a wireless communication module in the main computer 100 and each optical disk drive 130a to 130n for testing, respectively.

This embodiment schematically illustrates a method of testing each optical disk drive using wireless.

1, a wireless communication module is mounted on one PC and a wireless communication module is mounted on each optical disk drive to be tested. Each module consists of a wireless communication unit, a buffer for storing data, an ATAPI communication unit for communicating with a drive, and a 32-bit DSP-class fast central processing unit for controlling it. Each wireless communication module is provided with a unique ID number so that only the device of the ID number selected by the PC can be tested. A detailed description of the wireless communication module will be given with reference to FIG. 2.

2 is a block diagram of a wireless communication module according to an embodiment of the present invention.

In the above embodiment, the wireless communication module includes a wireless communication unit 210, a buffer unit 220, a central processing unit 230, and an ATAPI communication unit 240.

This embodiment schematically illustrates a wireless communication module in communication with an optical disk drive.

Referring to FIG. 2, the wireless communication module unit includes a wireless communication unit 210, a buffer unit 220 for storing data, an ATAPI communication unit 240 for communicating with an optical disk drive, and a 32-bit DSP-class fast controller for controlling the same. It is composed of a central processing unit (230).

The wireless communication unit 210 receives the command and ID number from the PC and transmits it to the central processing unit 230. The central processing unit 230 receiving the signal operates based on a command and an ID number to control the buffer 220 and the ATAPI communication unit 240. At the time of recording, random data is generated and stored in the buffer 220, and at the time of reproduction, the result of reproduction performed in the optical disk drive is received and sent to the PC through the wireless communication unit 210.

In the case of the present invention, when data to be recorded is used from a PC for recording, the slower the speed of wireless communication is, the more a large amount of buffers must be used. For example, in the case of DVD, the data processing speed is very fast at about 26Mbps at 1x speed, while in the current wireless communication, the IEEE802.11g standard uses the frequency band of 2GHz, and the high-speed communication up to standard speed of 24Mbps and optional 54Mbps. In order to record at 16x DVD speed, almost 4-5GByte of buffer is needed. Therefore, this problem can be solved by not sending data to be recorded from PC, but by DSP central processing unit in its own wireless communication module generating random data and transmitting it to optical disk drive through ATAPI communication.

3 is a flowchart illustrating a recording test method of an optical disk drive having a wireless communication module according to an embodiment of the present invention.

Step 301 is a process of determining whether a recording command and an ID are received, and the main computer transmits an ID number and a recording command of the optical disk drive to be recorded to the wireless communication module provided in the corresponding optical disk drive. Preferably, the data is transmitted wirelessly.

Step 302 is a process of determining whether the recording command and the ID number are the same. The recording command and the corresponding ID number transmitted from the computer are transmitted to all of the wireless communication modules provided in the optical disk drive. The ID number of the data is analyzed to determine whether the write command is allocated to the optical disk drive.

Step 303 is a process of generating random data. The central processing unit of the wireless communication module included in the optical disk drive generates data to be recorded on the optical disk. The data to be recorded is not generated by special criteria, and random recording data can be generated. The generated data is temporarily stored in the buffer (S304).

Step 305 is a process of transmitting data through ATAPI communication, wherein the random data generated by the central processing unit is transmitted to the corresponding optical disk drive through the ATAPI interface unit where the wireless communication module and the optical disk drive communicate. Since the information on the ATAPI interface is already known to those skilled in the art, the detailed description thereof will be omitted.

Step 306 is a process in which the optical disk drive writes, and records the random data transmitted from the central processing unit on the optical recording medium. As the optical recording medium, various recording media compatible with a corresponding optical disk drive such as a CD or a DVD can be used.

Step 307 is a process of ending recording. When recording of all data transmitted from the central processing unit is completed, recording ends.

Steps 308 to 310 are processes for searching for whether or not a recording error has occurred and generating a code according to whether or not a recording error has occurred, and generating a corresponding code for an error occurring when data is recorded on the optical recording medium. As the type of error, various errors related to recording may occur, such as a recording power adjustment error, a tracking error, a servo adjustment error, and the error code preferably has a different code value according to the corresponding error. If no error occurs during writing, the corresponding code is generated.

Step 311 is a process of transmitting the result data by ATAPI communication, and transmits the corresponding error code to the central processing unit by using the ATAPI interface that was in charge of the communication between the wireless communication module and the optical disk drive in step 305.

Step 312 is a process of transmitting the corresponding error code to the main computer by wireless communication, and transmits the generated error code to the main computer wirelessly using the wireless communication module. Preferably, the transmitted signal includes an ID value of a corresponding optical disk drive, and the main computer receiving the data analyzes and processes recording and reproducing states of each optical disk drive, and outputs a test result of the optical disk drive. .

4 is a flowchart illustrating a reproducing test method of an optical disc drive having a wireless communication module according to an embodiment of the present invention.

This implementation is almost similar to the recording test method of the optical disk drive of FIG. However, steps 303 and 304 of FIG. 3 are excluded because no special data for recording is needed. And instead of the recording command of FIG. 3, it is replaced with a playback command in the embodiment of FIG. Since the remaining steps are almost similar to the corresponding steps of FIG. 3, it will be appreciated by those skilled in the art that the above steps can be easily performed, and thus detailed descriptions of the steps will be omitted.

As described above, it has been described with reference to the preferred embodiment of the present invention, but those skilled in the art various modifications and changes of the present invention without departing from the spirit and scope of the present invention described in the claims below I can understand that you can.

As described above, according to the present invention, it is possible to test several optical disk drives at the same time with one PC, thereby saving space and operating time, improving the test environment, and efficiently managing information of test results.

Claims (10)

In the recording and playback test system of the optical disc drive, A recording and reproducing test system for an optical disc drive having a wireless communication module, characterized in that one computer and at least one optical disc drive are connected by a wireless communication module. 2. The recording and reproducing test system of an optical disc drive having a wireless communication module according to claim 1, wherein the wireless communication module has a unique ID number. The wireless communication module of claim 1, further comprising: a wireless communication unit configured to receive a command and an ID number transmitted from a computer; A central processing unit receiving the transmitted command and ID number; A buffer unit for storing data; And an interface for communicating with the optical disc drive. 17. A recording and reproducing test system for an optical disc drive having a wireless communication module. 4. The recording and reproducing test system of an optical disc drive having a wireless communication module according to claim 3, wherein the data to be recorded on the optical disc drive is arbitrarily generated and transmitted by the central processing unit. 4. The recording and reproducing test system for an optical disc drive having a wireless communication module according to claim 3, wherein the interface comprises an ATAPI communication unit. In the recording test method of the optical disk drive, Transmitting a write command and an ID number of an optical disk drive to receive the write command from a computer; Generating random data and transmitting it to an optical disk drive; Recording the random data on an optical disc; Generating an error code if an error occurs; And transmitting the error code to the computer. 7. The recording test method of claim 6, wherein the random data is temporarily stored in a buffer and then transmitted to the optical disk drive. 7. The recording test method of claim 6, wherein the computer and the optical disk drive transmit and receive data wirelessly. In the playback test method of the optical disc drive, Transmitting a playback command and an ID number of an optical disk drive to receive the playback command from a computer; Transmitting the playback command to an optical disc drive; Playing the optical disc; Generating an error code if an error occurs; And transmitting the error code to the computer. 10. The reproduction test method of claim 9, wherein the computer and the optical disc drive transmit and receive data wirelessly.

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