Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8411541 | Optical recording medium having read-only storage area and writable storage area and recording/reproducing apparatus and method therefor | In-sik Park, Jung-wan Ko, Kyung-geun Lee, Byoung-ho Choi, Jung-kwon Heo +1 more | 2013-04-02 |
| 8149667 | Optical recording medium having read-only storage area and writable storage area and recording/reproducing apparatus and method therefor | In-sik Park, Jung-wan Ko, Kyung-geun Lee, Byoung-ho Choi, Jung-kwon Heo +1 more | 2012-04-03 |
| 7463566 | Optical recording medium read-only storage area and writeable storage area and recording/reproducing apparatus and method therefor | In-sik Park, Jung-wan Ko, Kyung-geun Lee, Byoung-ho Choi, Jung-kwon Heo +1 more | 2008-12-09 |
| 7170836 | Error signal detection apparatus and method for optical recording/reproducing system | Byung-in Ma, Byoung-ho Choi, Chong-sam Chung, In-sik Park | 2007-01-30 |
| 7151729 | Optical recording medium having read-only storage area and writeable storage area and recording/reproducing apparatus and method therefor | In-sik Park, Jung-wan Ko, Kyung-geun Lee, Byoung-ho Choi, Jung-kwon Heo +1 more | 2006-12-19 |
| 7120095 | Apparatus for generating seek direction detecting signal using track error and track cross signals for an optical pickup | Byung-in Ma, Chong-sam Chung, In-sik Park, Byoung-ho Choi | 2006-10-10 |
| 7095686 | Defocus error signal detection apparatus having phase comparators and a matrix circuit for an optical recording/reproduction system | Byung-in Ma, In-sik Park, Chong-sam Chung, Jin-hoon Jeon, Byoung-ho Choi | 2006-08-22 |
| 6977876 | Apparatus for and method of detecting defocus error signal for optical pickup and apparatus for and method of detecting seek direction | Byung-in Ma, In-sik Park, Chong-sam Chung, Jin-hoon Jeon, Byoung-ho Choi | 2005-12-20 |
| 6961292 | Apparatus generating a seek direction detecting signal for an optical pickup using track cross and track error signals | Byung-in Ma, Chong-sam Chung, In-sik Park, Byoung-ho Choi | 2005-11-01 |
| 6885621 | Error signal detection apparatus and method for optical recording/reproducing system including comparing phases of sum signals | Byung-in Ma, Byoung-ho Choi, Chong-sam Chung, In-sik Park | 2005-04-26 |
| 6801486 | Method and apparatus to generate a monitoring signal for an optical recording/reproducing system | Byung-in Ma, In-sik Park, Jin-hoon Jeon, Byoung-ho Choi | 2004-10-05 |
| 6754146 | Error signal detection apparatus for an optical recording/reproduction system | Byung-in Ma, In-sik Park, Chong-sam Chung, Jin-hoon Jeon, Byoung-ho Choi | 2004-06-22 |
| 6724696 | Four-axial driving actuator for optical pickup | Seok-jung Kim, Yong-hoon Lee, Sun-mo Kim, Han-kook Choi | 2004-04-20 |
| 6687201 | Apparatus for generating seek direction detection signal | Byung-in Ma, Chong-sam Chung, In-sik Park, Byoung-ho Choi, Jin-hoon Jeon | 2004-02-03 |
| 6611482 | Error signal detecting apparatus for optical recording/reproducing apparatus | Byung-in Ma, Chong-sam Chung, In-sik Park, Byoung-ho Choi | 2003-08-26 |
| 6507544 | Error signal detection apparatus and reproduction signal detection apparatus for optical recording/reproducing system and method therefor | Byung-in Ma, Byung Ho Choi, Chong-sam Chung, In-sik Park, Joong-eon Seo | 2003-01-14 |
| 6400662 | Method of detecting track cross signal of optical disc recording/reproducing device and apparatus therefor | Byoung-ho Choi, Jung-wan Ko, Byung-in Ma, Tae Yeon Lee, In-sik Park | 2002-06-04 |