The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1998
Filed:
Dec. 28, 1994
Chul-woo Lee, Seoul, KR;
Kyung-hwa Rim, Seoul, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A method and apparatus for high-density reproduction of information recorded on an optical disk by increasing the optical resolution during reproduction. The apparatus focuses an optical beam reflected from the optical disk using a lens, and receives the focused reflected optical beam using a photodetector having an optical area whose width is smaller than the diameter of an optical spot formed thereon. As a result, jitter caused by interfering light, that is, light reflected from the circumference such as a recording portion adjacent to the optical disk, can be solved. Also, high-density reproduction can be performed by increasing the optical resolution during reproduction. The apparatus can be applied to an optical pickup for high-density recording.