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:
Dec. 04, 2007
Filed:
Dec. 29, 2003
Byung-in MA, Suwon-si, KR;
Kwan-joon Kim, Hwaseong-gun, KR;
Seok-jung Kim, Suwon-si, KR;
Shi-yang Ryu, Seoul, KR;
Byung-In Ma, Suwon-si, KR;
Kwan-Joon Kim, Hwaseong-gun, KR;
Seok-Jung Kim, Suwon-si, KR;
Shi-yang Ryu, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An actuator of an optical disk system and an apparatus producing a signal for driving the actuator, the actuator including a light source, with which information is recorded on or reproduced from an optical disk surface. In the actuator, an inner focusing coil and an outer focusing coil are installed near an inner boundary and an outer boundary, respectively, of the optical disk surface. A first signal wire is connected to a first port of the inner focusing coil and transmits an inner coil signal. A second signal wire is connected to a first port of the outer focusing coil and transmits an outer coil signal. A common signal wire is connected to a second port of the inner focusing coil and a second port of the outer focusing coil and transmits a common reference signal. Thus, a simple, inexpensive 8-wire actuator can be obtained.