Multimedia ppt chap6
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This document discusses optical storage media such as compact discs and digital video disks. It provides a brief history of optical discs including the development of CD-DA, CD-ROM, CD-RW and DVD. It then describes the basic technology behind optical discs, noting that data is stored in pits and lands on the reflective layer and read with a laser, allowing for much higher storage densities than magnetic disks. Finally, it discusses video disks and their use for storing motion pictures and audio in an analog format.
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Cloud Storage and Optical Disks
Cloud storage allows users to store files on remote servers accessed via the internet. It offers benefits like accessing files from any device with internet, sharing files easily, offsite backups, and relieving enterprises of data storage tasks. Optical disks like CDs and DVDs store data locally as microscopic pits and lands read by lasers. Common optical disk formats include CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW and Blu-ray disks, which have higher storage capacities than DVDs. Optical disks allow both read-only and rewritable options while cloud storage depends on subscription plans that may charge monthly fees.
The future of optical storage x rg zech (slide share)
This document discusses the future of optical data storage technology and its ability to increase storage capacity in the 21st century. It provides background on the history and development of optical storage from early holographic concepts in the 1960s to today's Blu-ray Disc format. The author analyzes potential advanced technologies like multi-layering and near-field recording that could enable optical discs to reach capacities of 1 terabyte or more and remain competitive with solid state flash storage. Key challenges around manufacturing and replication complexity are also addressed. The future of optical storage depends on significant engineering efforts to push areal densities and develop applications requiring its high capacity capabilities.
Optical storagе
The document defines optical storage and discusses optical disc drives. It explains that optical drives use lasers to read and write data to optical discs by detecting light reflections from bumps and areas on the disc's surface. The document outlines different types of optical media like CDs, DVDs, and Blu-rays, as well as read-only, rewritable, double-sided, and double-layer media. It also describes how optical drives spin and move discs to read data and how recorders encode data onto discs using lasers.
DVD TECHNOLOGY BY SAIKIRAN PANJALA
DVD is a digital optical disc format that can store large amounts of data, such as full-length movies. DVDs use laser technology to store data in tiny pits and lands on the disc's surface. This allows DVDs to hold up to 17 gigabytes of data, far more than a compact disc. DVD technology has largely replaced videotapes and other older media for home video viewing and distribution.
CD and its standards
The document discusses the history and standards of compact discs (CDs). It explains that CDs were originally developed in 1980 by Philips and Sony to store digital audio (the "Red Book" standard). Later extensions allowed CDs to also store computer data, video, and graphics. The document outlines several CD formats and standards over time such as CD-ROM, CD-R, CD-RW, and Video CD. It describes the physical details of CDs and how data is organized and read by lasers detecting pits and lands on the disc's surface. Standards are classified by "book colors" that define specifications for different disc systems.
History of Optical Disc Technology
This presentation focuses on the history of the three most important optical disc technologies in the past 30 years.
Optical disc
In computing and optical disc recording technologies, an optical disc is a flat, usually circular disc which encodes binary data in the form of pits and lands on a special material on one of its flat surfaces.
Compare CD vs DVD
In this presentation, I have mentioned that what is CD (Compact Disk) and What is DVD. How data stores into it. And How it manufactures. And Difference between them.
Recommended
Cloud Storage and Optical Disks
Cloud storage allows users to store files on remote servers accessed via the internet. It offers benefits like accessing files from any device with internet, sharing files easily, offsite backups, and relieving enterprises of data storage tasks. Optical disks like CDs and DVDs store data locally as microscopic pits and lands read by lasers. Common optical disk formats include CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW and Blu-ray disks, which have higher storage capacities than DVDs. Optical disks allow both read-only and rewritable options while cloud storage depends on subscription plans that may charge monthly fees.
The future of optical storage x rg zech (slide share)
This document discusses the future of optical data storage technology and its ability to increase storage capacity in the 21st century. It provides background on the history and development of optical storage from early holographic concepts in the 1960s to today's Blu-ray Disc format. The author analyzes potential advanced technologies like multi-layering and near-field recording that could enable optical discs to reach capacities of 1 terabyte or more and remain competitive with solid state flash storage. Key challenges around manufacturing and replication complexity are also addressed. The future of optical storage depends on significant engineering efforts to push areal densities and develop applications requiring its high capacity capabilities.
Optical storagе
The document defines optical storage and discusses optical disc drives. It explains that optical drives use lasers to read and write data to optical discs by detecting light reflections from bumps and areas on the disc's surface. The document outlines different types of optical media like CDs, DVDs, and Blu-rays, as well as read-only, rewritable, double-sided, and double-layer media. It also describes how optical drives spin and move discs to read data and how recorders encode data onto discs using lasers.
DVD TECHNOLOGY BY SAIKIRAN PANJALA
DVD is a digital optical disc format that can store large amounts of data, such as full-length movies. DVDs use laser technology to store data in tiny pits and lands on the disc's surface. This allows DVDs to hold up to 17 gigabytes of data, far more than a compact disc. DVD technology has largely replaced videotapes and other older media for home video viewing and distribution.
CD and its standards
The document discusses the history and standards of compact discs (CDs). It explains that CDs were originally developed in 1980 by Philips and Sony to store digital audio (the "Red Book" standard). Later extensions allowed CDs to also store computer data, video, and graphics. The document outlines several CD formats and standards over time such as CD-ROM, CD-R, CD-RW, and Video CD. It describes the physical details of CDs and how data is organized and read by lasers detecting pits and lands on the disc's surface. Standards are classified by "book colors" that define specifications for different disc systems.
History of Optical Disc Technology
This presentation focuses on the history of the three most important optical disc technologies in the past 30 years.
Optical disc
In computing and optical disc recording technologies, an optical disc is a flat, usually circular disc which encodes binary data in the form of pits and lands on a special material on one of its flat surfaces.
Compare CD vs DVD
In this presentation, I have mentioned that what is CD (Compact Disk) and What is DVD. How data stores into it. And How it manufactures. And Difference between them.
Cd Rom
CD-ROM is an optical disc used to store digital data originally developed for storing digital audio. It has a flat, round shape coated with a reflective material. Data is stored on CD-ROMs in the form of pits and lands, which are read by a laser focusing on the disc's spinning surface. CD-ROMs can store up to 650-700 MB of data and are read at varying speeds up to 52x, while writing is slower up to 32x. They use file systems like ISO 9660 to organize data on tracks and sectors. CD-ROMs provide large data storage in a compact, portable format but have slow writing speeds and data cannot be rewritten.
DVD Technology
A DVD is a disc that stores digital information such as movies, music, TV shows, and games using lasers and tiny bumps arranged in a spiral track. It was developed by Toshiba, Philips, Sony, and Matsushita Electric and can store much more data than a CD in a different format. DVD players use electricity to power a laser that reads the data on the disc layer by layer. DVDs come in different storage capacities and new formats like Blu-ray can store even more data than early DVDs. The DVD brought digital media storage and playback into mainstream use.
The history of the cd - PASSIVE VOICE
The Compact Disc (CD) was invented in 1995 by James Russel, who was granted 22 patents related to its development. However, the CD did not become popular until 1980 when it was mass manufactured by Philips. Originally developed to store and play back sound recordings, the CD format was later adapted for data storage as well. In October 1982, Sony and Philips began marketing the CD to the public, with Philips contributing the manufacturing process based on their LaserDisc technology. The CD is now used for storing recorded music, data, videos, archives, and texts in various formats including CD-RW, VCD, SVCD, Photo CD, and Enhanced Music CD.
Types optical disks
CD-ROMs and DVD-ROMs are circular optical discs that are 5 1/4 inches in diameter and have either a silver or gold reflective layer. They can store between 650 MB to 700 MB of data in a standard 120mm, 74-80 minute format, or 184 MB in an 80mm, 21 minute format. CD-ROMs follow the ISO9660 international standard and come in different shapes and formats, including DVDs, CD-R WORM disks, and CD-RW rewriteable disks.
DVD and Blue ray cd
DVD is a digital optical disc storage format introduced in 1995 that offers higher storage capacity than CDs. DVDs can be played on DVD players and come in read-only, recordable, and rewritable formats. The Blu-ray Disc format was later developed using a shorter wavelength blue laser that allows for higher density storage of data like high-definition video at resolutions up to 1080p. Blu-ray Discs have a standard capacity of 25GB per layer and are the same physical size as DVDs and CDs.
CD-ROM, CD-R DVD, (By Shujaat Abbas)
This document discusses different types of storage devices. It begins by explaining that storage devices are used to store data even when a computer is turned off. It then provides details on various storage media like audio cassettes, video cassettes, VCRs, floppy disks, CDs, DVDs, and USB drives. For CDs and DVDs specifically, it describes their structure, read/write speeds, storage capacities, advantages like portability and large storage, and disadvantages like slow writing speeds. The document emphasizes that storage devices allow easy transfer of data and files between computers.
CD, DVD , BLU RAY DISC
The document summarizes different optical disc formats, including CDs, DVDs, and Blu-ray discs. It describes the basic properties and evolution of CDs from solely audio storage to encompassing data, video, and photo formats. It then discusses the higher storage capacities of DVDs and various recording standards and sizes. Finally, it outlines the development of Blu-ray discs for high-definition video and audio storage, their layers, capacities up to 100GB, and mini/standard sizes and variants.
CD DRIVE
This document discusses CDs and DVDs. It begins by outlining the history of CDs, which were developed in 1980 by Philips and Sony as a format for audio storage. CDs can hold up to 720MB of data. DVDs were developed later and can store much more data at 4.7GB. The document then describes different types of CD and DVD drives - CD-ROM drives can only read from CDs; CD-R drives can both read and write to recordable CDs; CD-RW drives can read, write, and rewrite to rewriteable CDs. Installing drives involves removing panels, connecting cables to the motherboard, and adding power. The document concludes with multiple choice questions to
Presemtation Storage Devices
Optical storage devices like CDs and DVDs can be used to store large files like music, videos, and software. CDs typically hold smaller files up to 1GB, while DVDs can store much larger files of several GB like movies. Both allow portable storage and transfer of computer data between devices. CDs and DVDs provide a large storage surface area and can be interactive, but require physical distribution and different players to use.
Cd audio, cd rom
This document discusses CD audio and CD-ROM formats. CD audio uses the Red Book standard to store up to 74 minutes of audio using 8-to-14 modulation and error correction coding. CD-ROM uses Mode 1 and Mode 2 to store computer data or compressed audio/video up to 660MB or 742MB respectively. CD-ROM/XA builds on Mode 2 to concurrently retrieve compressed audio and video in Form 1 and Form 2 formats.
Dvd
This document provides information about troubleshooting DVD players. It begins by describing what a DVD player is and its main components like the optical system, disc drive mechanism, and printed circuit board. It then discusses common faults in DVD players such as DTS being disabled, incorrect aspect ratios, loose connections, dirty lenses/discs, and geographical incompatibilities. The document defines troubleshooting as locating faulty components and determining causes. It explains that troubleshooting is needed to reduce faults and ensure proper device functioning. Specific troubleshooting techniques for DVD players include enabling DTS output, cleaning connections and lenses, and using substitution methods to isolate problems.
Cd rom
This document discusses Compact Disc Read Only Memory (CD-ROM). It provides details about:
1. CD-ROMs hold large amounts of data like text, graphics, and audio in a digital format on plastic discs. They can store up to 680 megabytes of data.
2. CD-ROMs use pits arranged in a spiral track to store data, read with a low-power laser. Unlike hard disks, CD-ROMs rotate at a constant linear velocity for reading.
3. CD-ROMs provide random access to data, allow quick retrieval of related items, and can maintain data integrity for over 100 years, making them a secure long-term storage medium.
Dvd formats
This document discusses the format war between Blu-ray and HD DVD high-definition optical disc technologies. Both formats claim to be the successor to DVDs, but Blu-ray has greater storage capacity and support from major movie studios. While the formats are similar in performance, Blu-ray may win due to its larger content library and integration with the PlayStation 3 gaming console. Alternative options like dual-format discs and streaming could also replace DVDs as the dominant distribution method for movies.
CD Technology
This document discusses the working principles of CD-ROMs. It begins by explaining that CD-ROMs use optical principles to store and read data from circular, spinning media, unlike hard disks which use magnetic principles. It then lists the merits of CD-ROMs such as durability, large storage capacity, and resistance to electromagnetic fields. Potential demertis include slower access times than hard disks and the inability of normal CD-ROMs to write data. The document proceeds to describe the technical details of how data is encoded in pits and lands on the polycarbonate disc and how a laser reads this data. It explains the constant linear velocity method used to keep data transfer rates uniform across the disc's surface.
cd-rom
CD-ROMs use laser optics to read digital data stored as tiny bumps and pits on polycarbonate discs. A CD-ROM drive focuses a low-power infrared laser on the disc to detect changes in reflectivity, interpreting the light intensity fluctuations to retrieve binary data encoded in the physical structure of the disc. CD-ROM drives connect to computers and can read discs at increasing speeds, typically rated from 1x to 24x the original music CD speed of 150 kilobytes per second.
Data Storage Devices
Floppy disks were an early form of portable storage that stored data on magnetic disks inside protective casings. Zip disks provided more storage capacity than floppies in the late 1990s. Tape drives use magnetic tape for offline and archival storage, providing sequential access slower than hard disks but capable of high data transfer rates.
Hd dvd
High-definition DVD (HD DVD) is a high-density optical disc format that was developed for storing high-definition video. It uses a blue-violet laser instead of red to allow for smaller pits and a higher density, enabling 15GB on a single-layer disc or 30GB on a dual-layer disc. While similar in design to existing DVDs, HD DVDs use a shorter wavelength laser to fit more tracks and store HD content. The format was developed by Toshiba and NEC to provide consumers with high-quality HD content, but eventually lost the format war to the Blu-ray disc format.
Storage.ppt(lowerskl)
Secondary storage devices are not directly accessible by the CPU and do not lose data when powered down. Common secondary storage devices include magnetic tapes for storing large amounts of data cheaply, hard disks for quick access to large amounts of gigabytes of storage, floppy disks for smaller storage and transport of documents between computers, and optical disks like CDs and DVDs which use lasers to store and access digital data for music, video, programs and more. DVDs specifically store over six times more data than CDs using the same physical dimensions through optical disc storage technology developed in 1995.
Presentation on storage device
This presentation discusses different types of storage devices. It begins by introducing storage capacity and properties of storage units like access time and cost. The main types covered are optical storage devices like CDs, DVDs, and Blu-Ray discs which can store large amounts of data but are fragile. Magnetic storage devices discussed are floppy disks with small capacity and hard disks which are the primary computer storage. Solid state flash memory and memory sticks are also covered as portable options.
Blu Ray Disk
The document summarizes key information about Blu-ray discs, including their development history, technical specifications, software standards, playback profiles, and compatibility. Blu-ray discs can store high-definition video and audio using a blue-violet laser with a shorter wavelength than DVDs, allowing for greater storage capacity of 25-50GB. Formats include BD-R, BD-RE, and variants like mini Blu-ray discs.
Secondary storage devices of computer
Magnetic tape is a storage medium on a reel or cartridge with a magnetic coating that allows data to be written, erased, and rewritten. However, magnetic tapes provide only sequential access to data, requiring the tape to rewind or fast forward to requested data, making them unsuitable for frequently updated files. Optical disks like CDs and DVDs store large amounts of data using laser-readable spots on spiral tracks, allowing for higher storage densities than tapes or floppy disks. Recordable optical disks like CD-Rs and DVD-Rs allow users to permanently write data to the disk, while CD-RWs and DVD-RWs allow rewriting data. Cache memory provides faster access to frequently used instructions and data by
Computers13 Ch6
The document discusses different types of storage media including magnetic tape, optical disks, compact disks, and digital versatile disks. It describes the key characteristics of each type of media such as storage capacity, read/write capabilities, and common uses. The document also covers components needed for multimedia, including optical disk drives, sound cards, speakers, headphones, microphones, graphics cards, and processors.
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Cd Rom
CD-ROM is an optical disc used to store digital data originally developed for storing digital audio. It has a flat, round shape coated with a reflective material. Data is stored on CD-ROMs in the form of pits and lands, which are read by a laser focusing on the disc's spinning surface. CD-ROMs can store up to 650-700 MB of data and are read at varying speeds up to 52x, while writing is slower up to 32x. They use file systems like ISO 9660 to organize data on tracks and sectors. CD-ROMs provide large data storage in a compact, portable format but have slow writing speeds and data cannot be rewritten.
DVD Technology
A DVD is a disc that stores digital information such as movies, music, TV shows, and games using lasers and tiny bumps arranged in a spiral track. It was developed by Toshiba, Philips, Sony, and Matsushita Electric and can store much more data than a CD in a different format. DVD players use electricity to power a laser that reads the data on the disc layer by layer. DVDs come in different storage capacities and new formats like Blu-ray can store even more data than early DVDs. The DVD brought digital media storage and playback into mainstream use.
The history of the cd - PASSIVE VOICE
The Compact Disc (CD) was invented in 1995 by James Russel, who was granted 22 patents related to its development. However, the CD did not become popular until 1980 when it was mass manufactured by Philips. Originally developed to store and play back sound recordings, the CD format was later adapted for data storage as well. In October 1982, Sony and Philips began marketing the CD to the public, with Philips contributing the manufacturing process based on their LaserDisc technology. The CD is now used for storing recorded music, data, videos, archives, and texts in various formats including CD-RW, VCD, SVCD, Photo CD, and Enhanced Music CD.
Types optical disks
CD-ROMs and DVD-ROMs are circular optical discs that are 5 1/4 inches in diameter and have either a silver or gold reflective layer. They can store between 650 MB to 700 MB of data in a standard 120mm, 74-80 minute format, or 184 MB in an 80mm, 21 minute format. CD-ROMs follow the ISO9660 international standard and come in different shapes and formats, including DVDs, CD-R WORM disks, and CD-RW rewriteable disks.
DVD and Blue ray cd
DVD is a digital optical disc storage format introduced in 1995 that offers higher storage capacity than CDs. DVDs can be played on DVD players and come in read-only, recordable, and rewritable formats. The Blu-ray Disc format was later developed using a shorter wavelength blue laser that allows for higher density storage of data like high-definition video at resolutions up to 1080p. Blu-ray Discs have a standard capacity of 25GB per layer and are the same physical size as DVDs and CDs.
CD-ROM, CD-R DVD, (By Shujaat Abbas)
This document discusses different types of storage devices. It begins by explaining that storage devices are used to store data even when a computer is turned off. It then provides details on various storage media like audio cassettes, video cassettes, VCRs, floppy disks, CDs, DVDs, and USB drives. For CDs and DVDs specifically, it describes their structure, read/write speeds, storage capacities, advantages like portability and large storage, and disadvantages like slow writing speeds. The document emphasizes that storage devices allow easy transfer of data and files between computers.
CD, DVD , BLU RAY DISC
The document summarizes different optical disc formats, including CDs, DVDs, and Blu-ray discs. It describes the basic properties and evolution of CDs from solely audio storage to encompassing data, video, and photo formats. It then discusses the higher storage capacities of DVDs and various recording standards and sizes. Finally, it outlines the development of Blu-ray discs for high-definition video and audio storage, their layers, capacities up to 100GB, and mini/standard sizes and variants.
CD DRIVE
This document discusses CDs and DVDs. It begins by outlining the history of CDs, which were developed in 1980 by Philips and Sony as a format for audio storage. CDs can hold up to 720MB of data. DVDs were developed later and can store much more data at 4.7GB. The document then describes different types of CD and DVD drives - CD-ROM drives can only read from CDs; CD-R drives can both read and write to recordable CDs; CD-RW drives can read, write, and rewrite to rewriteable CDs. Installing drives involves removing panels, connecting cables to the motherboard, and adding power. The document concludes with multiple choice questions to
Presemtation Storage Devices
Optical storage devices like CDs and DVDs can be used to store large files like music, videos, and software. CDs typically hold smaller files up to 1GB, while DVDs can store much larger files of several GB like movies. Both allow portable storage and transfer of computer data between devices. CDs and DVDs provide a large storage surface area and can be interactive, but require physical distribution and different players to use.
Cd audio, cd rom
This document discusses CD audio and CD-ROM formats. CD audio uses the Red Book standard to store up to 74 minutes of audio using 8-to-14 modulation and error correction coding. CD-ROM uses Mode 1 and Mode 2 to store computer data or compressed audio/video up to 660MB or 742MB respectively. CD-ROM/XA builds on Mode 2 to concurrently retrieve compressed audio and video in Form 1 and Form 2 formats.
Dvd
This document provides information about troubleshooting DVD players. It begins by describing what a DVD player is and its main components like the optical system, disc drive mechanism, and printed circuit board. It then discusses common faults in DVD players such as DTS being disabled, incorrect aspect ratios, loose connections, dirty lenses/discs, and geographical incompatibilities. The document defines troubleshooting as locating faulty components and determining causes. It explains that troubleshooting is needed to reduce faults and ensure proper device functioning. Specific troubleshooting techniques for DVD players include enabling DTS output, cleaning connections and lenses, and using substitution methods to isolate problems.
Cd rom
This document discusses Compact Disc Read Only Memory (CD-ROM). It provides details about:
1. CD-ROMs hold large amounts of data like text, graphics, and audio in a digital format on plastic discs. They can store up to 680 megabytes of data.
2. CD-ROMs use pits arranged in a spiral track to store data, read with a low-power laser. Unlike hard disks, CD-ROMs rotate at a constant linear velocity for reading.
3. CD-ROMs provide random access to data, allow quick retrieval of related items, and can maintain data integrity for over 100 years, making them a secure long-term storage medium.
Dvd formats
This document discusses the format war between Blu-ray and HD DVD high-definition optical disc technologies. Both formats claim to be the successor to DVDs, but Blu-ray has greater storage capacity and support from major movie studios. While the formats are similar in performance, Blu-ray may win due to its larger content library and integration with the PlayStation 3 gaming console. Alternative options like dual-format discs and streaming could also replace DVDs as the dominant distribution method for movies.
CD Technology
This document discusses the working principles of CD-ROMs. It begins by explaining that CD-ROMs use optical principles to store and read data from circular, spinning media, unlike hard disks which use magnetic principles. It then lists the merits of CD-ROMs such as durability, large storage capacity, and resistance to electromagnetic fields. Potential demertis include slower access times than hard disks and the inability of normal CD-ROMs to write data. The document proceeds to describe the technical details of how data is encoded in pits and lands on the polycarbonate disc and how a laser reads this data. It explains the constant linear velocity method used to keep data transfer rates uniform across the disc's surface.
cd-rom
CD-ROMs use laser optics to read digital data stored as tiny bumps and pits on polycarbonate discs. A CD-ROM drive focuses a low-power infrared laser on the disc to detect changes in reflectivity, interpreting the light intensity fluctuations to retrieve binary data encoded in the physical structure of the disc. CD-ROM drives connect to computers and can read discs at increasing speeds, typically rated from 1x to 24x the original music CD speed of 150 kilobytes per second.
Data Storage Devices
Floppy disks were an early form of portable storage that stored data on magnetic disks inside protective casings. Zip disks provided more storage capacity than floppies in the late 1990s. Tape drives use magnetic tape for offline and archival storage, providing sequential access slower than hard disks but capable of high data transfer rates.
Hd dvd
High-definition DVD (HD DVD) is a high-density optical disc format that was developed for storing high-definition video. It uses a blue-violet laser instead of red to allow for smaller pits and a higher density, enabling 15GB on a single-layer disc or 30GB on a dual-layer disc. While similar in design to existing DVDs, HD DVDs use a shorter wavelength laser to fit more tracks and store HD content. The format was developed by Toshiba and NEC to provide consumers with high-quality HD content, but eventually lost the format war to the Blu-ray disc format.
Storage.ppt(lowerskl)
Secondary storage devices are not directly accessible by the CPU and do not lose data when powered down. Common secondary storage devices include magnetic tapes for storing large amounts of data cheaply, hard disks for quick access to large amounts of gigabytes of storage, floppy disks for smaller storage and transport of documents between computers, and optical disks like CDs and DVDs which use lasers to store and access digital data for music, video, programs and more. DVDs specifically store over six times more data than CDs using the same physical dimensions through optical disc storage technology developed in 1995.
Presentation on storage device
This presentation discusses different types of storage devices. It begins by introducing storage capacity and properties of storage units like access time and cost. The main types covered are optical storage devices like CDs, DVDs, and Blu-Ray discs which can store large amounts of data but are fragile. Magnetic storage devices discussed are floppy disks with small capacity and hard disks which are the primary computer storage. Solid state flash memory and memory sticks are also covered as portable options.
Blu Ray Disk
The document summarizes key information about Blu-ray discs, including their development history, technical specifications, software standards, playback profiles, and compatibility. Blu-ray discs can store high-definition video and audio using a blue-violet laser with a shorter wavelength than DVDs, allowing for greater storage capacity of 25-50GB. Formats include BD-R, BD-RE, and variants like mini Blu-ray discs.
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Secondary storage devices of computer
Magnetic tape is a storage medium on a reel or cartridge with a magnetic coating that allows data to be written, erased, and rewritten. However, magnetic tapes provide only sequential access to data, requiring the tape to rewind or fast forward to requested data, making them unsuitable for frequently updated files. Optical disks like CDs and DVDs store large amounts of data using laser-readable spots on spiral tracks, allowing for higher storage densities than tapes or floppy disks. Recordable optical disks like CD-Rs and DVD-Rs allow users to permanently write data to the disk, while CD-RWs and DVD-RWs allow rewriting data. Cache memory provides faster access to frequently used instructions and data by
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CD and DVD technology was summarized in 3 sentences:
CDs were introduced in the 1980s and could store up to 700MB of data, while DVDs introduced in 1996 have much higher storage capacity of 4.7-17GB due to using a shorter wavelength laser and smaller pit sizes which allowed for multiple layers. DVDs surpassed VHS and will become the leading video format while CDs will still be used for audio but higher end applications will move to DVD's larger storage capabilities.
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The document discusses different types of computer memory and storage devices. It describes RAM, ROM, PROM, and EPROM as memory devices, and how they differ in terms of volatility and accessibility. For storage, it outlines magnetic devices like hard disks, floppy disks, and tapes, as well as optical disks like CDs, DVDs, and Blu-ray. It provides details on the storage capacities and characteristics of each type of memory and storage device.
Secondary storage devices.
This document discusses various secondary storage devices, including floppy disks, hard disks, CDs, DVDs, USB drives, and Blu-ray discs. It provides details on the history and evolution of floppy disks, describing their decreasing sizes over time from 8 inches to 3.5 inches. Hard disks are described as using rapidly rotating discs coated with magnetic material to store and retrieve data. CDs, DVDs, and Blu-ray discs are all described as optical storage using lasers, with each subsequent technology providing higher storage capacity and data transfer speeds.
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Digital technologies have significantly shaped the production and consumption of popular music over time. Early digital audio devices developed in the late 1970s allowed for convenient manipulation, storage, and transmission of audio. Sony's Walkman, introduced in 1979, was a revolutionary portable audio player and helped popularize personal audio devices. Further technological developments included the introduction of the compact disc in 1982, Digital Audio Tape in 1987, and MiniDisc in 1992. Each new format aimed to improve upon previous technologies but some, like DAT, saw only moderate commercial success. Digital audio players utilizing formats like MP3 achieved widespread popularity with the iPod's launch in 2001.
Blue Ray Disk
Blu-ray disc is a next-generation optical disc format that uses a blue-violet laser to read and write high-definition video and large amounts of data to discs. It can store 25GB on a single-layer disc or 50GB on a dual-layer disc. Blu-ray disc has stronger protection against scratches and fingerprints compared to DVDs, and is compatible with playing CDs and DVDs.
Blu ray disc
Blu-ray is a next-generation optical disc format that provides over 5 times the storage capacity of DVDs, allowing for high definition video and audio. It uses a blue-violet laser to read and write very small pits within the disc's layers, packing in more data than DVD. Common Blu-ray disc types include BD-ROM for distribution, BD-R for recording, and BD-RW for rewriting. Compared to DVD, Blu-ray has greater capacity, resolution, and features like instant seeking and multiple recordings.
Blu Ray Disc
Blu-ray Disc is a next-generation optical disc storage format that can store high definition video and games with much higher density than DVDs. It uses a blue-violet laser to read discs that have been coated with a protective layer and can store up to 27GB on a single-layer disc. The smaller laser wavelength allows information to be packed more densely into the pits and grooves on the disc surface.
Blu Ray(Ind)
Blu-Ray disks can store significantly more data than DVDs due to a smaller laser wavelength that allows for denser data storage. Blu-Ray uses a blue-violet laser with a wavelength of 405nm compared to DVD's 650nm red laser, allowing Blu-Ray disks to store up to 50GB of data. Blu-Ray also features improved data encoding and supports high-definition video playback without quality loss. As technology advances, Blu-Ray disk capacity continues to increase, with demonstrations of disks holding over 500GB.
Cd writning technology
The document summarizes different aspects of CD writing technology, including:
1. CDs provide affordable and reliable data backup compared to other devices due to their low cost, fast retrieval speeds, universal system support, and durability if not damaged.
2. CDs store digital audio data through pulse code modulation that samples audio at 44.1 kHz with 16-bit samples, allowing high quality playback.
3. Various CD formats exist for different purposes like audio, data, video, and multimedia applications, defined by technical specifications books.
Chapter 8: Advanced Drive Technology
This chapter discusses advanced disk drive technologies such as CD-ROM, DVD, and Blu-ray discs. It describes how these optical disc formats work, their storage capacities and advantages over floppy disks. The document explains CD-ROM and DVD drive components, how data is stored in bumps and pits, and various disc formats. It also provides steps to connect a disc drive to a computer and overview software to burn data or music discs.
Optical memory
Optical memory uses lasers, storage media, and detectors to store data. Common optical storage devices include CDs, DVDs, and Blu-ray discs. CDs store data in the form of pits and lands on an aluminum layer, which a laser reads by detecting differences in light reflection. DVDs store more data than CDs using closer pit spacing and multiple layers that the laser can read through. Blu-ray discs can store 25 GB per layer or 50 GB with dual layers, replacing DVD technology.
Lesson 3 second year fourth quarter s
The document outlines the minimum hardware requirements for audio on a computer. It recommends at least a Pentium 133 processor, with more RAM and a larger hard disk for better performance when ripping, encoding, and editing audio files. It also recommends CD-RW drives and discusses different types of connectors like IDE, SCSI, and USB. Sound cards are mentioned as important for analog to digital conversion. Common storage devices include floppy disks, CDs, DVDs, MP3 players and thumb drives. Speakers and headphones are needed for listening, while microphones can be either dynamic or condenser types.
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Multimedia ppt chap6
- 2. INTRODUCTION Magnetic Data Storage Low average access time Higher storage cost for continuous media data Optical Storage Media Higher storage density at a lower cost Audio compact disk to Long play disks (LPs) Commercially successful product 690328
- 3. HISTORY 1982 Compact Disc - Digital Audio (CD-DA) 1985 Compact Disc - Read Only Memory (CD-ROM) 1988 Compact Disc - Interactive (CD-I) 1989 Compact Disc - Read Only Memory/Extended Architecture (CD- ROM/XA) 1990 Compact Disc - Write Once (CD-WO), Compact Disc - Magneto- Optical (CD-MO) 1992 Photo Compact Disc (Photo-CD) 1995 Compact Disk - Read Write (CD-RW) 1996 Super Density (SD) 1997 Digital versatile(video) disk (DVD)developed 690328
- 4. BASIC TECHNOLOGY Physical structure for Optical Storage Media (The Label) 690328
- 5. BASIC TECHNOLOGY(Conti..) Use the intensity of reflected laser light as an information source A laser beam of 780nm wavelength can be focused at 1µm The substrate layer is covered with a thin reflective layer Laser beam is focused on the reflective layer from the substrate layer The reflected beam has a strong intensity at the lands Weak intensity at the pits 690328
- 6. BASIC TECHNOLOGY(Conti..) Advantage over Magnetic Disk Easily played back at a continuous data rate We can stored 16000 tracks per inch, in comparison a floppy disk has 96 tracks per inch Very good for long-term storage 690328
- 7. Data are stored in an analog-coded format on the disk Video disk in the form of Laser Vision and serves as the output of motion pictures and audio Laser vision disk has a diameter of 30cm and stores 2.6 GB Also called the Video Long Play (VLP) disk Motion picture is encoded as frequency modulation and the audio signal is mixed with the video signal VIDEO DISK FUNDAMENTALS 690328
- 8. VIDEO DISK FUNDAMENTALS (Conti..) Designed As ROM, Many Different WO Have Come Out Known As WORM (Write Once Read Many). For Example Interactive Video Disk. Diameter between 3.5 and 14 inch Storage Capacity 600 MB to 8 GB Advantage is, ability to store large amounts of data which may not be changed later Juke-boxes is used to increase the capacity 690328