LG Electronics GSA-4167B, GSA-4168B, GSA-4165B About Prevention the DVD-ROM from to be copy

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3. About Prevention the DVD-ROM from to be copy

A data is able to encode and record in the disc, if a copyright holder wants to prevent the disc from copying.

In case of a disc enhanced movie of 3 titles......

DISC KEY (2048 Bytes) is used to encode the whole contents in the disc and TITLE KEY (5 Bytes) is used to encode the title respectively.

So, the data is encoded and stored in a disc through the unknown algorithms with a disc key and title key. (At this time, the disc key and title key are stored in a disc.)

…As above, the disc is able to copy when the disc key and title key are opened.

Then, ROM-DRIVE encodes the disc key and title key and transfers to MPEG- 2 board.

If you want to play the disc prevented from the copy......

First of all, ROM-DRIVE and MPEG-2 board identify with each other through the procedure as described below.

AGIDHOST

ROM-DRIVE

Challenge key

MPEG-2

BOARD

encoded disc key, title key

1.Drive and host gives and takes the ID of 2bit. This ID is AGID (Authentication Grant ID).

The various decoder boards are attached to the host, in these, AGID sets the MPEG-2 board and drive.

2.After the AGID is set, MPEG-2 board generates the challenge key (10 Byte) and transfers to drive. The board and drive generate key 1 (5Byte) with the challenge key respectively. (Of course, the Algorithm generating the key 1 is not known.)

3.Compare with the generated key 1, if it corresponds each other, the first step of authentication is completed. This is a course to identify the MPEG-2 board with a drive.

4.The second step of authentication is a course to identify a drive with the MPEG-2 board.

The dirve generates a challenge key and transfers it to the MPEG-2 board. The dirve and MPEG-2 board generate the key 2 (5Byte) with the challenge key, compare with each other, and if it corresponds and the secondary step of authentication is completed.

5.As above, the identification is completed.

6.The dirve and MPEG-2 board generate the Bus key with the key 1 and key 2 and own it.

7.Dirve encodes the disc key and title key with this Bus key and transfers to the MPEG-2 board.

8.The MPEG-2 board reads the encoded disc key and title key with the Bus key only.

9.MPEG-2 board lets data read from the drive to decode with the read disc key and title key and makes into the video signal by decoding.

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Contents Super Multi DVD Drive Model GSA-4165B/GSA-4167B/GSA-4168BTable of Contents 4165B Support feature and writable discIntroduction 4167BSupported disc formats FeaturesGeneral Supported write methodPerformance AudioApplicable disc formats SpecificationsOperating System Recording tool Writing methodRead/Write & Rotational speed RPC Regional Playback Control Phase2, No RegionData capacity Pcav Access time 1/3 strokeData transfer rate CLVAcoustic noise DimensionsQuality and Reliability Disc tray Emergency Eject Hole Drive activity indicatorLocation of Customer Controls Stop/Eject buttonAnalog Audio Output Connector Power Connector Jumper ConnectorIDE Interface Connector Disassembly Cabinet and Circuit Board DisassemblyPick-up Exploded View Glossary CD-R and CD-RW Disc Disc SpecificationRecording Layer ~0.5 umCD-R disc Disc MaterialsCD-ROM disc Pigment Reflective Layer ColorCD-RW Disc Itop Laser Spot Position TimeWriting process of CD-RW Disc Crystal phaseWriting Process of CD-R Disc AmorphousLayout of CD-R/RW disc Organization of the PCA, PMA and Lead-in AreaLayout of CD-ROM disc Function of PCA and PMA area OPC and RopcPCA C ount Area Lead -out Area Writing Process of DiscPCA Test Area Lead-In Area Recording Capacity of CD-R/RW 74Minute Recording mediaDifferences of DVD-R/RW, DVD+R/RW discs and DVD-ROM DVD-ROM DVD-RW DVD+R DVD+RW Single LayerDual Layer DVD-R DVD+R Recording format using organic dye material DVD-R/DVD+RDisc structure Laser beamCrystalline status Amorphous status Recording principlesDVD-RW DVD+RW High reflection coefficient Low reflection coefficientWriting Pulse Wave Form of DVD+R 2Tw2st Method Using Blocked Write Strategy Shall be 0.1mWDTera Writing Pulse Wave Form of DVD+RWTtop OUT PSN Layout of DVD-ROM discLayout of DVD+R disc Layout of DVD+RW disc LightScribe Media LightScribe MediaProcessor PowerCIrcuit EncoderMD Assy For LightScribe Optical Encoder UnitGND Optical Encoder AssyCodewheel OFGData Processing Flow DVDCD Data Processing KEY Management Control Brief Process Block Diagram R8J32007Copy Protection and Regional Code Management Block Regional Code for DVD DiscIf you want to play the disc prevented from the copy About Prevention the DVD-ROM from to be copyCase of a disc enhanced movie of 3 titles About the DVD-ROM Regional Code Regional codeBlock Diagram of the PICK-UPHOP-7632TS Internal Structure of the PICK-UPSignal Name Signal Description Pick up Pin AssignmentRF Signal == A+B+C+D Signal detection of the P/UFocus Error Signal == A+C-B+D +D B+C kF+H E+GBlock Diagram Pick-upAlpc Automatic Laser Power Control Circuit Focus Circuit Focus ServoBlock Diagram Tracking Following Tracking & Sled CircuitHOP-7632TS Block Diagram SeekUnit Tracking Servo Sled ServoOptical Pick-up Disc HOP-7632TS Motor unit Spindle CircuitFG CAV Servo Block Diagram Wobble CLV Servo IC101 R2S35002 RF AMP Analog Signal Processor Pin AssignmentPick Function Pin FunctionsPin Name Pin No Type IP2/MIRR BlankWobsig IP1/LPPOUTPin Name Pin No Type Max. voltage Function IC301 R8J32007FPV Encoder, Decoder & DSP Singal Processor Pin LayoutVinp ADC Pin Table Pin no Pin NameData PLL/PRML Pin List Pin Name Pin No Destination Function Wpll Pin List Pin Name Pin No Destination FunctionServo Pin List Pin Name Pin No Destination Function DA1 DA0 Hrstb AtapiDA2 Atapi 5IO AtapiWobsig IP1LPPINIP2MIRR LowzbFlash/SRAM Pin List Pin Name Pin No Destination Function H8S Micro-Processor Pin ListPin Name Pin No Destination Function SEL30 Power Supply/GND Pin List Pin Name Pin No Function Pin name Function Package outline 42 PIN Power Ssop 42P9R-KPin Function Loading Input/Output circuit diagram Spgs ACTFLG,FG Actrst CommonHigh Frequency/NRZI skew Adjust Troubleshooting GuideLaser Power Adjust using RD Power/WR Power/Erase Power Circuit Offset AdjustServo Loop Gain Adjust Focus Amp. and Total Amp. AdjustTracking Amp. Adjust Focus Offset Adjust for DVD-RAM PID Amp Unwritten Slice Level Adjust for DVD-RAMFocus Offset Adjust for DVD-ROM, CD-R/RW Focus Offset Adjust for DVD-RAM Data Error pulseFocus Deviation Adjust Tilt Adjust for DVD-RAMTilt Adjust for DVD-R/RW, DVD+R/RW, CD-R/RW Focus Offset Adjust for DVD-R/RW, DVD+R/RW, CD-R/RWAdip BPF/Read Timing Adjust for DVD+R/RW Lens Sensitivity AdjustSpindle Offset Adjust Focus Offset Adjust for DVD-R/RW, DVD+R/RWDIDSlider Spindle RTZ TimeOut FailFocus Servo/Tracking Servo Fail Detail Error Code & Fail Analysis Laser Power Initial Adjust SSB Byte8,9Adjusting Error during Disc Load Sequence Lead in Error SSB Byte21,22DVD-ROM,CD-R/RW DVD-R/RW, +R/RWSSB Byte21,22 SSB Byte21,22 Loading Sequence Error Lead in Error 8586 DSP PCB Poor Analysis Check listXRD Page WCK RCK Does the power supply circuit operate normally?CS0B Is the clock of MPU in DSP oscillated correctly?IC601R2S30202FP 7ch driver Control mode setup by the control terminalMotor, Abnormalities in Actuator System Motor & actuator and its correspondence pinFujitsu Block DiagramMBM29LV160BE DVD/CD DSP

GSA-4167B, GSA-4165B, GSA-4168B specifications

LG Electronics has been a prominent name in the electronics industry, particularly known for its innovative optical storage solutions. Among its noteworthy products are the GSA-4167B, GSA-4165B, and GSA-4168B DVD writers, each showcasing a blend of advanced technology and user-friendly features tailored to meet diverse consumer needs.

The LG GSA-4167B stands out for its versatility and performance. This model supports a wide range of disc formats, including DVD-R, DVD+R, DVD-RW, DVD+RW, and dual-layer DVDs, enhancing its usability for various applications. With a generous writing speed of up to 16x for DVD+R and 8x for dual-layer DVDs, users can create and backup data efficiently. This device is equipped with LG’s Super Multi technology which allows it to read and write multiple formats, making it a perfect choice for users who wish to maximize their media experience without being restricted to a single format.

The GSA-4165B, though slightly older, remains popular due to its reliable performance and ease of use. This model also supports a wide array of formats and achieves impressive speeds comparable to its counterparts. With features such as Buffer Under Run Technology, the GSA-4165B minimizes interruptions during the burning process, reducing the risk of damaging data. Additionally, its sleek design makes it appealing for desktop setups, offering both aesthetics and practicality.

On the other hand, the LG GSA-4168B is known for its advanced capabilities, particularly in terms of burning dual-layer DVDs. Supporting speeds up to 16x for standard DVDs and 4x for dual-layer formats, it combines speed with efficiency. This model incorporates LightScribe technology, enabling users to etch labels directly onto specially coated discs, adding a personal touch to data storage. Its efficient cooling system helps maintain performance during extensive usage, ensuring longevity and reliability.

All three models represent LG's commitment to quality and innovation in optical storage technology. With features such as Power Burn technology and Seamless Link, they provide users peace of mind during high-speed data transfers. Their compatibility with different operating systems further enhances their versatility, making them suitable for both home users and professionals. Overall, the GSA-4167B, GSA-4165B, and GSA-4168B are exemplary models that reflect LG Electronics' dedication to advancing technology and enhancing user experience in the realm of optical drives.
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