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:
Apr. 15, 1997
Filed:
Jul. 13, 1995
Bon H Koo, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
CD-ROM drive, including a pick-up for detecting recorded data from a CD-ROM, a control signal generation part for generating a acceleration/deceleration control signal, a driving extent control signal, and a guaranteed frame synchronizing signal by processing a high frequency signal received from the pick-up, an acceleration/deceleration control part for receiving the acceleration/deceleration control signal, the driving extent control signal, and the guaranteed frame synchronization signal from the control signal generation part, outputting the acceleration/deceleration control signal and the driving extent control signal as a driving signal and a driving extent signal respectively in case mode is not a searching mode but a normal linear velocity mode, and generating a driving signal and a driving extent signal based on a result obtained by subjecting the acceleration/deceleration control signal, the driving extent control signal, and the guaranteed frame synchronization signal to an operation so that the guaranteed frame synchronization signal can reach to high voltage within a short time in case the mode is a searching mode, and a spindle motor for rotating the CD-ROM in response to the driving signal and the driving extent signal received from the acceleration/deceleration control part; and a method for controlling the CD-ROM drive.