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:
Nov. 11, 2003
Filed:
Dec. 15, 1999
Chong-sam Chung, Seongnam, KR;
Young-man Ahn, Suwon, KR;
Tae-kyung Kim, Suwon, KR;
Hea-jung Suh, Seongnam, KR;
Seung-tae Jung, Seongnam, KR;
Chul-woo Lee, Seongnam, KR;
In-sik Park, Suwon, KR;
Dong-ho Shin, Seongnam, KR;
Samsung Electronics Co., Ltd.., Suwon, KR;
Abstract
An optical pickup apparatus which reduces cross talk by adjacent tracks. The optical pickup apparatus divides light reflected from an optical recording medium as a spot into center and side portions defined with respect to the radial direction of the recording medium and provides electrical signals corresponding to the reflected light in divided form. An operation unit multiplies signals corresponding to the side portions by an operation constant, adds the multiplication results and the detected signal of the center portion, and outputs an information signal of a main track with reduced cross talk by adjacent tracks in real time. The optical efficiency is sufficient that recording of an information signal can be performed with the optical pickup.