Difference Between Blu Ray and DVD (With Table)

The new generation of contemporary technology is data producers. Not at a low rate. This generation is producing the data just like a factory with no break. Some data can be relevant and important to an individual but waste for others. So, to store all that data, many storage devices are available in which Blu ray and DVDs are also included. They have different features which make them unique and provides different services to fulfill everyone’s purpose.

Blu Ray vs DVD

The significant difference between Blu ray and DVDs is based on their storage capabilities. Blu-ray is capable of storing more data than DVD. The single layer of Blu ray is capable of storing 25 GB. On the other hand, a single DVD layer can store 4.7GB which makes it different from Blu-ray. 

Blu-Ray is a storage device that is bigger than many storage devices. It is an HD storage device which makes it unique and different from many other optical storage devices. It is preferred and produced for high-definition videos. The capability of Blu-ray of storage is greater than other disk format devices.

The term DVD is referred to as Digital Versatile Disk. DVD is the disk that is utilized using videotape recorders. It is also a storage device mainly produced for videos which are capable of storing 7 times to the normal CD’s. They can also be operated on computers.

Comparison Table Between Blu Ray and DVD

Parameters of ComparisonBlu RayDVD
Storage The storage of a single layer in Blu ray is 25 GB.The storage of single layer in DVD is 4.7 GB
Location of the metal layerThe layer mater or the recording layer’s position in the Blu ray is near to the reading mechanism’s objective lenses.In DVD’S, the layer of recoding or the metal layer is positioned in the middle of the disk.
Spacing between spiral loopsThe space between the spiral loops in the Blu ray is 0.30 micrometers.The spacing between the spiral loops of DVD is 0.74 micrometer which is more as compared to Blu-ray.
Spacing between the pitsThe space between pits of Blu ray is 0.15 micrometer. The space between pits of DVD is 0.4 micrometer.
Correction codesThe correction codes used in Blu ray are picket codes.The correction codes used in DVD are RS-PC and EFMplus.

What is Blu Ray?

Blu ray is known as a storage device that is bigger than many storage devices. It is an HD storage device which makes it unique and different from many other optical storage devices. It is preferred and produced for high-definition videos. The capability of Blu-ray of storage is greater than other disk format devices. The storage of a single layer in Blu ray is 25 GB which is much greater than other disk storage devices. The layer mater or the recording layer’s position in the Blu ray is near to the reading mechanism’s objective lenses.

The space between the spiral loops present in the Blu ray is found to be 0.30 micrometer. The space between pits of Blu ray is 0.15 micrometer. The correction codes used in Blu ray are picket codes. The wavelength in the Blu ray is 405 nm in laser. The rate of speed by which the data is transferred from a Blu ray is 36 MB/sec. The size with the presence of a double layer concerning Blu ray is 50 GB which is a huge storage capability to store a lot of data and files. It is easily available and cost expensive than the DVD but provides more storage at that price which makes it a genuine product for common people.

What is DVD?

The full form of DVD is Digital Versatile Disk. DVD is the disk that is utilized using videotape recorders. It is also a storage device mainly produced for videos which are capable of storing 7 times to the normal CD’s. They can also be operated on computers. The storage of a single layer in DVD is 4.7 GB. In DVD’S, the layer of recoding or the metal layer is positioned in the middle of the disk. The spacing found between the spiral loops present in the DVD is 0.74 micrometer which is more as compared to Blu-ray. The space between pits of DVD is 0.4 micrometer.

The correction codes used in DVD are RS-PC and EFMplus. DVD’s laser wavelength value is 650 nm, and the data transfer rate is 11MB/sec, which is very less than Blu-ray in comparison. The double layer of DVD provides the size of 8.5 GB which can store a genuine number of files for storage and transportation. It is easily available and cost cheaper than the Blu ray which makes it affordable for common people. 

Main Differences Between Blu Ray and DVD

  1. The storage capacity in a single layer that belongs to Blu-ray is 25 GB. Whereas the storage capacity in a single layer which belongs to Digital Versatile Disk, is 4.7 GB.
  2. The layer of metal or the other layer of recording layer’s respective position present in the Blu ray is closer to the mechanism of reading objective lenses, whereas in DVD’S, the layer of recoding or the other, which is the metal layer, is present in the middle of the disk.
  3. The space between the spiral loops in the Blu ray is 0.30 micrometer, whereas the spacing between the spiral loops of DVD is 0.74 micrometer which is more as compared to Blu ray.
  4. The space between pits of Blu ray is 0.15 micrometer, whereas the space between pits of DVD is 0.4 micrometer.
  5. The correction codes used in Blu ray are picket codes, whereas the correction codes used in DVD are RS-PC and EFMplus.

Conclusion

After all the comparisons of the feature and qualities of both storage devices, you should be able to decide and choose which storage device is most favorable for you. Each of them has different usage and applications. All the comparison is for clarity so that product should be used for what it is meant to be, and no confusion should be there related to the applications. DVD and Blu-ray were both great innovations at their time, which changed the world of entertainment and made it easy to carry videos and music easily. They made it possible to store HD videos.

References 

  1. https://www.tandfonline.com/doi/abs/10.1080/00076791.2013.771332
  2. https://pubs.acs.org/doi/abs/10.1021/acssensors.8b00340
  3. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1626224
  4. https://www.sciencedirect.com/science/article/pii/S0925400519300504
  5. https://www.tandfonline.com/doi/abs/10.1080/08997764.2010.527206
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