QP, AN IMPROVED CODE FOR HIGH-DENSITY DIGITAL RECORDING

被引：10
作者：
BIXBY, JA
KETCHAM, RA
机构：
[1] Spin Physics, Inc., San Diego
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1979年 / 15卷 / 06期
关键词：
D O I：
10.1109/TMAG.1979.1060446
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper describes a new digital recording code format, Quadra-Phase (QP), designed for high density applications. QP is well suited for use on bandpass channels, such as a tape recorder channel, because its frequency response spectra matches the recording channel. This code is described and compared with other common PCM codes. The encoding and decoding processes are presented, and eye-patterns and spectra of QP and other codes are shown. QP achieves the same packing performance as NRZ, without the need for very low frequency channel response. © 1979 IEEE
引用
收藏
页码：1465 / 1467
页数：3
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