Zen

A SEMINAR REPORT ON “ZEN Technology” Submitted by Mr. Ajay V. Zambad Final Year (Master of Computer Management(M.C.M.) Guided by Mr. Santosh Gore (Lecturer) Seminar Guide

COLLEGE OF MANAGEMENT AND COMPUTER SCINCE, YAVATMAL

TOPICS INTRODUCTION COMPETITIVE ADVANTAGE ZEN STRATEGY LICENSE MODEL ZEN TECHNOLOGY OPTICAL DISC OVERVIEW ZEN TECHNOLOGY DETAILS MULTIPLE BEAM ILLUMINATION ZEN SILICON DESIGN THE COMPETITION ABOUT ZEN APPLICATIONS CONCLUSION REFERENCES

INTRODUCTION 

Zen Research is enabling the creation of the ultimate removable storage device by revolutionizing the optical storage market with patented technology and breakthrough designs for components and software. •Zen technologies have greatly enhanced performance while increasing reliability

•Zen’s patented technology is the ability to illumina multiple tracks concurrently, detect them simultane And read them in parallel.

COMPETITIVE ADVANTAGE

Zen’s patented technology is the ability to illuminate multiple tracks concurrently, detect them simultaneously, and read them in parallel. Zen has demonstrated speeds of 72X for CD and is currently argeting a 30X level of performance for DVD.  The format of the disc media is unchanged. operate at 3 to 5 times faster than conventional single beam technology. 

provide higher performance levels for optical drives at lower disc rotation rates. making drives quieter, more reliable and less prone to vibration.

onstant transfer rates, more disc-tolerant rotation speeds, nd compatibility with CD-ROM, DVD-ROM, CD Recordable, DVD Recordab D re-writable, and DVD re-writable.

License Model  



Zen indends its unique IP. Zen is working to make design available in exchange of royalty payment. Zen has target optics,silicon and software as the containers for its unique IP.

OPTICAL DISC OVERVIEW

Performance improvements in optical drive technology have historically been implemented by increasing the rotation speed of the disc and through CAV (Constant Angular Velocity). It has become apparent that these methods are no longer able to deliver CD-ROM more than very small incremental Today’s and DVD-ROM disc drives use a single performance gains. highly concentrated laser beam to read the digital signal that is encoded onto tracks of an optical disc (CD or DVD).



OPTICAL DISC OVERVIEW

fig2-CD magnified at 5000X

A track on an optical disc is a series of very small pits and the spaces between them, called lands arranged in a spiral pattern.

In conventional optical drives, a single laser beam is directed on disc that begins at the disc center and spirals outward towards th a single track of information which forms a continuous spiral on th outer edge.

The disc drive rotates the disc and the tracks run under the laser beam The laser is reflected at different intensities (one for pit and one for land) for different amounts of time (the length of a pit or land) as it passes over The the reflected spiral laser track light is directed to a light sensitive detector that turns the light variations into a stream of serial data. Data stream is amplified and sent to a microprocessor for interpretation.

Two primary methods of disc rotation are used in today’s optical dr Constant Linear Velocity (CLV) and Constant Angular Velocity (CAV).

CLV

Drives that use CLV rotate the disc at various speeds depending upon th position of the optical pickup unit over the disc.

The disc rotation motor speed is varied to maintain a constant rate of d delivery from the disc regardless of whether the pickup is near the cente of the disc or on the outer edge.

The spiral tracks at the center of the disc have the shortest length.

The spiral tracks on the outer edge of the disc are the longest; they hold the most data in one revolution, so the motor runs slower to keep the data rate constant.

CAV :In a CAV system, the speed of the motor that rotates the disc  remains constant.  the speed of the data that is detected by the optical pickup changes depending upon where the pick-up is on the disc. For the same rotational speed, CAV drives deliver data slowly at the beginning or center of the disc where the data track spirals are shortest.  the fastest data rates are possible at the outer edge, where one revolution provides the most data from the longest spiral tracks on the disc.

Zen Technology Details    

The format of disk media is unchanged Mechanical element of disk drive are not changed It is applied CLV or CAV method Zen technical advancement can be catagorised :1) Optical System. 2)Parrallel Processors.

Fig. 3- Multiple Beam Illumination

ZEN SILICON DESIGN

Zen silicon designs are centered on a series of parallel processors-ASIC designs that implement Zen’s unique parallel approach to optical signal processing.

Uses for handling massive amounts of data quickly, without overloadi conventional microprocessor cores

Fig. 4 – 1st Zen Enabled Parallel Processor

THE COMPETITION

For example, published comparison tests rate many of the current 50X(+)drives average performance levels in the 30X – 40X range.  The Performance target for Zen's next generation of CD-ROM drives is 100X.

Fig. 5 – Throughput Comparison

Fig. 6 FASTER: High transfer rate delivers 6.75MB to 10.8MB/sec. across the entire disc. QUIETER: Lower rotation speeds minimize noise and vibration. MORE RELIABLE: Lower rotation speeds enhance precise disc readability

Tests 1 Drive

460MB Xfer

Kenwood 72X

Avg. Rate

44.4X 69 sec?s

Plextor 40X Max

107 sec?s

Table - 1

28.7X

Test 2

Drive

Win 98SE

Avg. Rate

Kenwood 72X

245 sec?s

17.0X

Plextor 40X Max

320 sec?s

13.0X

Conclusion

References   

www.zenresearch.com www.cdzentech.com www.targetpckenwood72x.com