Title :
Transversal push-pull method for optical pickup
Author :
Morimoto, Y. ; Büchler, C. ; Schröder, H.J. ; Weissmann, G. ; Zucker, F. ; Uhde, D.
Author_Institution :
Thomson Consumer Electronics Res. & Dev. Lab., Villingen, West Germany
fDate :
11/1/1989 12:00:00 AM
Abstract :
The authors have developed the transversal push-pull (TPP) method for removing track offset. The basic principle and characteristics of the TPP method are described. The proposed method has the following features: (1) ability to remove track error offset caused by objective lens shifting; (2) no chance for track error offset in recording on a write-once disk, because of one-beam scanning; (3) no limitation of spot size on the photodetector (therefore, the effect of photodetector movement is depressed); and (4) application to a compact disk system. The TPP has negligible offset in playing back compact disks
Keywords :
magneto-optical recording; optical disc storage; photodetectors; video and audio discs; compact disk system; objective lens shifting; one-beam scanning; optical pickup; photodetector movement; playing back compact disks; spot size; track error offset; transversal push-pull; write-once disk; CD recording; Consumer electronics; Detectors; Disk recording; Laser beams; Lenses; Optical recording; Signal detection; Structural beams; Tellurium;
Journal_Title :
Consumer Electronics, IEEE Transactions on
