Confused about certain blu-ray related tech terms? You will find definitions to various lingos used in blu-ray, high definition, and A/V world.
Glossary: BD, BD Live, BD-25, BD-50, BD-9, BDA, Bit stream, Codecs, Compression, OAR, PCM.
Blu-ray Disc is an optical disc storage media format. Its main uses are high-definition video and data storage. It is also the format used by Play station 3 console systems.
Compatible with Profile 2.0. Adds network connectivity for extra contents.
A single layered Blu-ray disc with 25GB capacity.
A double layered Blu-ray disc with 50GB capacity.
BD-9 is a red laser DVD with BD contents on it. Capacity: 9GB.
The Blu-ray Disc Association (BDA) is the industry consortium that develops and licenses Blu-ray Disc technology and is responsible for establishing format standards and promoting business opportunities for Blu-ray Disc. The BDA is divided into three levels of membership: the Board of Directors, the Contributors, and the General Members.
The term bit stream is frequently used to describe the configuration data to be loaded into a field programmable gate array (FPGA).
Codecs are compression schemes that store audio and video more efficiently, either giving longer play time or higher quality per megabyte. There are both lossy and lossless compression techniques.
The process of encoding information using fewer bits (or other information-bearing units) than an unencoded representation would use through use of specific encoding schemes. One popular instance of compression with which many computer users are familiar is the ZIP file format, which, as well as providing compression, acts as an archiver, storing many source files in a single destination output file.
Original Aspect Ratio.
Pulse-code modulation (PCM) is a digital representation of an analog signal where the magnitude of the signal is sampled regularly at uniform intervals, then quantized to a series of symbols in a digital (usually binary) code. PCM has been used in digital telephone systems and is also the standard form for digital audio in computers and the compact disc red book format. It is also standard in digital video, for example, using ITU-R BT.601. However, straight PCM is not typically used for video in standard definition consumer applications such as DVD or DVR because the bit rate required is far too high. Very frequently, PCM encoding facilitates digital transmission from one point to another (within a given system, or geographically) in serial form.