| Patent Number |
Title Of Patent |
Date Issued |
| 5926445 |
Waveform controlling device for a tracking error signal |
July 20, 1999 |
| An unbalanced waveform of a tracking error signal is automatically corrected within a short period of time. A peak value and a bottom value of a tracking error signal are obtained by a peak-hold circuit and a bottom-hold circuit, respectively. Based on the peak value and the bottom v |
| 5886963 |
Gain control device for servo control |
March 23, 1999 |
| An automatic gain control device includes: reading unit for reading information signal from a recording medium; servo loop including servo control unit for controlling position of the reading unit with respect to the recording medium; mixing unit for mixing a disturbance signal into the |
| 5761164 |
Gain control device for servo control |
June 2, 1998 |
| An automatic gain control device includes: reading unit for reading information signal from a recording medium; servo loop including servo control unit for controlling position of the reading unit with respect to the recording medium; mixing unit for mixing a disturbance signal into the |
| 5757748 |
Automatic gain control apparatus for optical disc player |
May 26, 1998 |
| An automatic gain control apparatus for an optical disc player is equipped in a servo loop to perform a servo control by use of an error signal in the optical disc player. The apparatus is provided with: a gain control device for controlling a gain of the servo loop to have a controlled |
| 5600615 |
Device and method for automatically controlling a servo loop gain |
February 4, 1997 |
| An automatic gain control device includes: servo loop for performing servo control based on an error signal; gain control unit for controlling gain of the servo loop in accordance with gain control value; and storage unit for storing gain control values. The gain control unit starts gain |
| 5508988 |
Method and apparatus for reproducing information from a partially recorded recording medium |
April 16, 1996 |
| Method and Apparatus for playing a CD are designed to allow playback of a partially recorded disk of CD-Rs (CD-Recordable) having the DRAW (direct read after write) capability. It is determined if a target disk is a partially recorded CD-R recording medium. When a reverse command to retu |
| 5471441 |
CD player capable of playing back partially recorded CD |
November 28, 1995 |
| A CD player capable of detecting the recording end of a partially recorded CD-R (PRD) during playback. When an unrecorded area (URA) is detected, an address immediately before that of the URA is held and a setup is performed at the position of that detection. If the setup is unsuccessful |
| 5430698 |
CD playing apparatus |
July 4, 1995 |
| A playing apparatus for a compact disc on which TOC information comprising at least first to third point data has repetitively been recorded in a lead-in area. A reading point by a pickup is moved in the lead-in area from the disc outer rim side in accordance with a TOC information readi |
| 5414684 |
Method and apparatus for discriminating type of disks positioned on a CD player |
May 9, 1995 |
| Disclosed is a CD player that ensures a setup operation and reproduction of information even when a partially recorded CD-R is set therein. The CD player sequentially performs the setup operation, starting from the first setup position located at the innermost periphery of the CD, predet |
