recording density
11Perpendicular recording — (or Perpendicular Magnetic Recording, PMR) is a technology for data recording on hard disks. It was first proven advantageous in 1976 by Shun ichi Iwasaki, then professor of the Tohoku University in Japan, and first commercially implemented in… …
12Memory storage density — is a measure of the quantity of information bits that can be stored on a given length of track, area of surface, or in a given volume of a computer storage medium. Generally, higher density is more desirable, for it allows greater volumes of data …
13Optical recording — The history of optical recording can be divided into a few number of distinct major contributions. The pioneers of optical recording worked mostly independently, and their solutions to the many technical challenges have very distinctive features …
14Group code recording — In computer science, group code recording (GCR) refers to several distinct but related encoding methods for magnetic media. The first, used in 6250 cpi magnetic tape, is an error correcting code combined with a run length limited encoding scheme …
15Comparison of analog and digital recording — This article compares the two ways in which sound is recorded and stored. Actual sound waves consist of continuous variations in air pressure. Representations of these signals can be recorded using either digital or analog techniques. An analog… …
16History of sound recording — Methods and media for sound recording are varied and have undergone significant changes between the first time sound was actually recorded for later playback until now. Technology Mechanical recording The first devices for recording sound were… …
17Black recording — In telecommunication, the term black recording has the following meanings: 1. In facsimile systems using amplitude modulation, recording in which the maximum received power corresponds to the maximum density of the record medium. 2. In a… …
18Optical disc recording modes — Optical discs Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing Optical media types …
19Optical disc recording technologies — Optical discs Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing Optical media types …
20Perpendicular Recording — oder Senkrechtaufzeichnung bzw. senkrechte Aufzeichnung, auch Perpendicular Magnetic Recording (PMR), ist eine Aufzeichnungstechnik bei magnetischen Datenträgern. Der Effekt wurde 1976 an der Universität Tōhoku in Japan nachgewiesen und 2005… …
