Hybrid disc

A hybrid disc is a disc, such as CD-ROM or Blu-ray, which contains multiple types of data which can be used differently on different devices. These include CD-ROM music albums containing video files viewable on a personal computer, or feature film Blu-rays containing interactive content when used with a PlayStation 3 game console.


Audio CD with added data tracks

Hybrid-CD also refers to an audio CD which also includes a data track storing MP3 (or other digital audio compression format) copy of those CD-DA tracks. Before the introduction and subsequent popularization of iTunes and the iPod, such discs were popular for sharing music on compact disc without requiring the recipient to extract and encode the CD-DA themselves — a technical and perhaps time-consuming process on older computing hardware. However, with the advent of faster computing hardware and vastly simplified automated extraction and encoding tools (e.g. iTunes, Rhythmbox, etc.) and the lack of an automated hybrid feature in that very same software, popularity of such hybrid CD has subsequently declined. However, such hybrid discs do remain in a commercial setting as a digital rights management enforcement technique, where encrypted compressed copies of the digital audio are provided with proprietary software for listening in a computer disc drive, while the CD-DA is included for playback in stand-alone CD players.


Hybrid Blu-rays

In recent years, some Blu-rays have been released as Hybrid discs, demonstrating its compatibility with the PlayStation 3 console, which uses BD as its primary disc format. These discs generally include a movie or feature that can be played on any Blu-ray Disc player and playable content which is accessible when run on a PlayStation 3 console. Examples include Tekken Hybrid, Macross Frontier: Itsuwari no Utahime and Lagrange: The Flower of Rin-ne -Kamogawa Days-.



Comments

Post a Comment

Popular posts from this blog

The Network Layer

Image
Note on 22 Jul 2002 Properties and Services The network layer normally offers one of the following services to the transport layer Connection-oriented Connectionless Network layers are designed with the following goals in mind To provide services independent of subnet technology To shield the transport layer from the number, type & topology of the subnets present To use a uniform addressing scheme across both LAN & WAN Virtual Circuits Used in connection oriented services Whenever two machines wish to communicate - a route from source to receiver is setup and remembered Advantages easy congestion control quick to parse subsequent packets Disadvantages setup time vulnerable to crashes Datagrams Used in connectionless oriented services Everytime a packet is sent out, a new route maybe chosen Advantages robust no initia
Read more

The Transport Layer

Image
Note on 22 Jul 2002 Services provided Goal of the transport layer is to provide efficient reliable & cost effective service to higher levels (normally applications) Normally provides connection oriented & connectionless services Functions in a similar manner to network layer QoS Another way of looking at transport layer is that it's primary function is to enhance the "Quality of Service" of the network layer What exactly good is, is best left up to the user Connection establishment delay Connection establishment failure probability Throughput Transit delay Residual error ratio Protection Priority Resilience Transport Service primitives Many programs & programmers use transport layer so primitives must be easy to use and understand Primitive PDPU sent Meaning LISTEN none Block until some process tries to connect CONNECT CONNECTION REQ. Ac
Read more