1
Yasuhiro Ueki: Method and apparatus for recording and reproducing information on and from optical disc. Victor Company of Japan, Louis Woo, June 11, 2002: US06404713 (45 worldwide citation)

An apparatus for recording and reproducing an information signal on and from an optical disc includes a memory. The information signal is written into the memory. The information signal is read out from the memory. An optical head generates a laser beam in response to the readout information signal, ...


2
Yasuhiro Ueki: Drive system for information recording/reproducing apparatus. Victor Company of Japan, Lowe Price LeBlanc & Becker, April 20, 1993: US05204593 (37 worldwide citation)

A drive system for an information recording/reproducing apparatus having a recording head to record and reproduce information on and from an information recording disc, the drive system being equipped with a spindle motor for rotating the information recording disc and a voice coil motor for moving ...


3
Yasuhiro Ueki, Hideaki Yamagami, Takeshi Aizawa: Optical disk recording and/or reproducing apparatus for performing optimizing operation for servo control with recording and/or reproducing operation. Victor Company of Japan, Lowe Price LeBlanc & Becker, March 18, 1997: US05612939 (30 worldwide citation)

In the beginning of a reproducing operation of information data from a first layer of a disk in an optical disk recording and/or reproducing apparatus, an optimizing operation of a servo control for an optical pick-up through which the information data are reproduced from the first layer is initiall ...


4
Yasuhiro Ueki: Information recording medium method and apparatus for recording and reproducing information. Victor Company of Japan, Louis Woo, January 13, 2004: US06678236 (28 worldwide citation)

An information recording medium includes a lead-in area and a data area for storing contents information. The lead-in area includes a first lead-in information area and a second lead-in information area. The first lead-in information area corresponds to a first playback mode. The second lead-in info ...


5
Yasuhiro Ueki: Information-signal recording and reproducing apparatus. Victor Company of Japan, Louis Woo, August 2, 2005: US06925035 (27 worldwide citation)

A recording medium has first and second areas on which first and second information signals are recorded respectively. The first information signal has a size Ya. The second information signal has a size Yb. A head operates for reproducing the first and second information signals from the first and ...


6
Yasuhiro Ueki: Brushless motor with no rotor-position sensor. Victor Company of Japan, Lowe Price LeBlanc & Becker, July 30, 1991: US05036264 (27 worldwide citation)

A sensorless-type brushless motor equipped with a rotor having a plurality of magnet poles and a stator having a plurality of multi-phase drive coils to generate a rotational torque with respect to the rotor. The motor is arranged to be controllable by a control circuit arrangement which includes a ...


7
Yasuhiro Ueki: Detection of relative position between magnetic pole and drive coil in brushless DC motor. Victor Company of Japan, Pollock VandeSande & Priddy, October 27, 1992: US05159246 (24 worldwide citation)

A sensorless type, brushless direct-current motor which is equipped with a rotor having a plurality of magnetic poles and multi-phase coils which are wound around a magnetic core to form magnetic paths and whose first terminals are connected in common to each other, the rotor being rotationally driv ...


8
Yasuhiro Ueki, Hideaki Yamagami, Takeshi Aizawa: Optical disk recording and/or reproducing apparatus for performing optimizing operation for servo control with recording and/or reproducing operation. Victor Company of Japan, Lowe Hauptman Gopstein Gilman & Berner, September 15, 1998: US05808989 (22 worldwide citation)

In the beginning of a reproducing operation of information data from a first layer of a disk in an optical disk recording and/or reproducing apparatus, an optimizing operation of a servo control for an optical pick-up through which the information data are reproduced from the first layer is initiall ...


9
Yasuhiro Ueki: Information-signal recording and reproducing apparatus. Victor Company of Japan, Louis Woo, April 27, 2004: US06728170 (21 worldwide citation)

A recording medium has first and second areas on which first and second information signals are recorded respectively. The first information signal has a size Ya. The second information signal has a size Yb. A head operates for reproducing the first and second information signals from the first and ...


10
Hideharu Eguchi, Atsushi Hosoda, Ichiro Ueno, Yasuhiro Ueki: Optical disc record carrier with wobbled grooves that permit recording on the grooves and lands, apparatus for manufacturing such a record carrier, and recording and/or reproducing apparatus for such a record carrier. Victor Company of Japan, Anderson Kill & Olick P C, September 18, 2001: US06292458 (20 worldwide citation)

An optical disc record carrier having at least one wobbled groove that permits information recording on both groove and land tracks is provided. Each groove has a sync wobbling modulated with a continuous signal and an address wobbling. The address wobbling includes an address portion including addr ...