首页>
外国专利>
GENERATION FOR ORTHOGONAL SEEK SIGNAL FROM DISCONTINUOUS TIMEWISE TRACKING ERROR SIGNAL AND DISCONTINUOUS TIMEWISE RF DATA SIGNAL IN OPTICAL STORAGE DEVICE
GENERATION FOR ORTHOGONAL SEEK SIGNAL FROM DISCONTINUOUS TIMEWISE TRACKING ERROR SIGNAL AND DISCONTINUOUS TIMEWISE RF DATA SIGNAL IN OPTICAL STORAGE DEVICE
展开▼
机译:连续存储跟踪设备中不连续的时差跟踪误差信号和不连续的时差RF数据信号生成正交的SEEK信号
展开▼
页面导航
摘要
著录项
相似文献
摘要
PROBLEM TO BE SOLVED: To generate orthogonal signals from a discontinuous timewise TES signal and a discontinuous timewise RF baseband signal by detecting pulses being in the discontinuous timewise TES signal expressing the position of a light beam with respect to the center line of a track and the discontinuous timewise RF baseband signal and counting the number of tracks in which the light beam traverses in its seeking operation. ;SOLUTION: A discontinuous timewise TES signal 114 is selected by a MUX 100. On the other hand, a discontinuous timewise RF baseband signal 112 is extracted by an envelope detector 110. The discontinuous timewise TES signal 114 and the RF baseband signal 112 are synchronized by a synchronizer 118 according to a current seek speed and an operation mode and they pass through LPFs 116A, 116B and a track traversing frequency is extracted. Then, these signals are respectively converted into binary square-wave signals TEX 128 and REX 130 by a TEX detector 132 and a REX detector 134 to form orthogonal seek signals.;COPYRIGHT: (C)1999,JPO
展开▼