Yamaha Understanding Buffer Underrun Protection in CD Player Technology
Page 49

Technical Notes

Buffer Underrun Protection Function

CD-R/RW drives are equipped with a buffer memory, which temporarily stores data that is being transferred. When the buffer memory becomes empty due to a delay of data transfer for any reason, a writing error happens. Such condition is defined as buffer underrun, and such an error is defined as a buffer underrun error.

Buffer Underrun Protection is featured in the CRW-F1 drive.

When buffer underrun almost happens, Buffer Underrun Protection temporarily suspends the writing process. Writing resumes when enough data has accumulated in the buffer memory. Buffer Underrun Protection in the CRW-F1 drive is extremely accurate, resulting in seamless recording before and after suspension.

Test writing

Test writing is a function to check for the possible occurrence of buffer underrun in your computer environment. When Buffer Underrun Protection of the CD writing software is activated, the test writing function cannot be operated. Buffer Underrun Protection should be deactivated to operate the test writing function.

Writing Methods

Disc-at-Once (DAO)

This method is used to write all data onto a disc in one operation. It writes multiple pieces of data without placing a space between data, starting with the innermost track of the disc. Once data is written by this method, no data can be added to the same disc even if there is free space available on the disc. This method is useful for making a backup copy of an entire disc.

Track-at-Once (TAO)

This method is used to write data on a disc on a track-by-track basis. A track can be defined as the smallest unit of area that contains an ordinary program, image file, text file, etc. This method enables you to add data to the same disc, one track of data at a time, as long as there is free space available on the disc. A disc that contains data written in several sessions is defined as a multi-session disc.

An area that records data and management information (Lead-in/Lead-out) is defined as a session. Lead-in and Lead-out are signals written for stating the starting and ending points of one session.

Note

Ordinary audio CD players can only play back single-session discs or the first session on a multi-session disc. Do not record audio data on the second and subsequent sessions.

40

Page 48 Page 50
Image 49
Page 48 Page 50
Contents Page FCC Information U.S.A Achtung Page English Safety Precautions Iii Precautions for Transportation WarrantyTable of Contents DiscT@2 Features of the CRW-F1 DriveHigh speed writing/reading SafeBurn Enhanced stability writing technologyFront Panel Names and Functions of PartsNames and Functions of Parts Rear PanelHandling Discs Precautions on UseCopyright Disclaimer of IndemnityDisc shape Compatible DiscsRecordable disc type Writing/Rewriting speed CD-RW discsHigh Speed CD-RW discs Ultra Speed CD-RW discs Computer PC/AT compatible System RequirementsImage file Operating systemSerial Number Preparing the CRW-F1 DrivePreparing tools Serial NumberTurn off and unplug the computer Decide the Installation MethodReplacing an existing IDE device with the CRW-F1 drive Example 1 As a secondary slave For additional drive Examples of connecting the CRW-F1 driveEnhanced-IDE E-IDE Preparing the CRW-F1 DrivePage Set the Jumper Switch Cable Select Csel Installing the CRW-F1 drive as an additional drive Install the CRW-F1 DriveReplacing Connect a 40-pin IDE cable Audio CD playback Connect an audio cable if necessaryAnalog connection Digital connection Top Power connector Bottom For Windows XP Check Recognition of the CRW-F1 DriveFor Windows 2000 Professional If the drive name is not shown or there is or markFor Windows 95/98/98 Second Edition/Me For Windows XP/2000 Professional Recommended DMA settings transfer mode settings Install CD Writing SoftwareDirect Memory Access DMA Loading/Ejecting a Disc Manually Ejecting a Disc CRW-F1 drive is not recognized by the operating system. P TroubleshootingIs the IDE cable connected properly to the CRW-F1 drive? Is the IDE cable connected properly to the motherboard?Is the disc tray opened when the computer is restarted? Disc tray does not open when you press the eject buttonIs each IDE device set respectively? Is the CRW-F1 drive recognized by the operating system? PNo data can be read from a disc Playback of an audio CD CD-DA is inaudible Check that the volume is not set to the minimum levelFor Windows Me Other problems Error message Buffer Underrun is displayedIs the power capacity of your computer sufficient? Checking the firmware version in your CRW-F1 drive FirmwareSupported Formats Write Read Play back *4 CRW-F1 Drive SpecificationsData Transfer Rate Mode CRW-F1 drive conforms to the following specifications CRW-F1 Drive Specifications Safety/EMC ComplianceBuffer Underrun Protection Function Technical NotesWriting Methods Disc-at-Once DAOPacket Writing Technical Notes Session-at-Once SAOConstant Angular Velocity CAV Constant Linear Velocity CLVPartial CAV Page Canada

CRW-F1-NB specifications

The Yamaha CRW-F1-NB is a pioneering piece of technology in the world of CD-RW drives, celebrated for its exceptional performance and advanced features. Released as part of Yamaha’s commitment to audio excellence, the CRW-F1-NB stands out due to its versatile capabilities that cater to both casual users and audio professionals.

One of the most notable features of the CRW-F1-NB is its ability to burn CDs at remarkable speeds without compromising audio quality. With a write speed of up to 44X, this drive significantly reduces the time required to create high-quality audio CDs. The drive utilizes a unique technology called "Buffer Underrun Prevention" which helps avoid interruptions during the burning process. This technology is essential for maintaining the integrity of the data written on the disc, reducing the likelihood of errors that can occur when the buffer runs empty.

The CRW-F1-NB also showcases Yamaha's proprietary "Acoustic Quality" technology, which ensures that the audio recorded on CDs retains the richness and clarity of the original sound. This feature is particularly beneficial for musicians and audiophiles who prioritize the fidelity of their audio recordings. Yamaha’s expertise in audio engineering translates into the CRW-F1-NB, offering users an exceptional listening experience.

In terms of connectivity, the CRW-F1-NB is designed to be user-friendly with a standard IDE interface, making it compatible with a wide range of systems. This adaptability ensures that users can easily integrate the drive into their existing setups, regardless of their specific requirements.

Another characteristic that makes the CRW-F1-NB appealing is its robust build quality. The drive is designed with durability in mind, ensuring reliability for both daily use and intensive audio production tasks. The sleek and compact design allows it to fit seamlessly into various multimedia setups, preserving the aesthetics of an organized workspace.

Yamaha’s CRW-F1-NB is also noteworthy for its support for various media types. It can handle not only CD-R and CD-RW formats but is also capable of writing audio CDs and data discs, making it a versatile tool for users with diverse needs.

In summary, the Yamaha CRW-F1-NB is a state-of-the-art CD-RW drive that encapsulates Yamaha's dedication to audio quality and innovation. With its impressive writing speeds, advanced technologies, user-friendly design, and robust construction, it stands as an essential tool for anyone looking to produce high-fidelity audio recordings. Whether you’re an amateur musician, a professional audio engineer, or simply an audio enthusiast, the CRW-F1-NB is engineered to meet your needs, delivering performance that exceeds expectations.
Top Page Image Contents