Abstract: Optical disc apparatus (1) comprising a supporting assembly (7), a spindle motor (9), optical means associated with the supporting assembly for scanning an information surface of the optical disc mounted on the spindle of the spindle motor, a focusing lens assembly (29), a swing arm assembly (41) comprising a generally elongate swing arm structure (43) mounting said focusing lens assembly at a free end, the swing arm assembly being pivotally movable about a swing axis (47) spaced away from said free end and directed generally perpendicularly to the swing arm structure, first pivoting means (65) for enabling focusing movements of said focusing lens assembly, and second pivoting means (53) for enabling said pivotal scanning movements of the swing arm assembly, and further comprising movable magnetic focusing means (55,57) provided near said free end of the swing arm assembly for driving said focusing lens along its focusing axis and movable magnetic scanning means for driving said swing arm assembly pivotally a

Abstract: An optical disc apparatus (1) comprising a supporting assembly (7), a spindle motor (9) having a magnetic motor stator (17), optical means for scanning an information surface of said optical disc mounted on the spindle and comprising a focusing lens assembly (29) having a movable focusing lens, a swing arm assembly (41) comprising a generally elongated swing arm structure (43) mounting said focusing lens assembly adjacent to a free end (41), movable magnetic scanning means provided at the free end of the swing arm assembly for driving said swing arm assembly rotationally about a swing axis (47) for scanning the disc information surface and stationary magnetic scanning means associated with the supporting assembly and comprising a magnetic scanning stator core (59) provided near and spaced from the free end of the swing arm assembly for magnetically cooperating with said movable magnetic scanning means through at least one intermediate air gap disposed in a curved plane.

Abstract: Pivoting optical device comprising a first part (15) and a second part (17) with optical means which is pivotally movable relative to the first part about a first pivot axis (19), said optical means defining an optical laser beam path (21) in the general longitudinal direction of the second part, and further comprising bearing means (23) comprising the first pivot axis and a point laser source (25) fixedly connected to the first part for providing a laser beam in the general direction of said second part. According to the invention, the laser source is located in said optical laser beam path in the general longitudinal direction of the second part, and the bearing means present an open center region (29) so that a laser beam is allowed to pass from the laser source to the second pivotally movable part.

Abstract: An apparatus has communication means for obtaining an electromagnetical coupling with a first antenna (22) on an information carrier (1), a support member (61) and a clamping member (62) for clamping the information carrier in axial direction, a bridge (63) for supporting the clamping member, and a second antenna (66) which is coupled with the clamping member. In axial direction oppositely to the second antenna the bridge is at least partially free of metal. In order to prevent eddy currents.

Abstract: The invention relates to an active matrix display device (10) having a plurality of pixels (110). The pixels are grouped into pixel groups (R?, G?, B?). Each pixel group (R?, G?, B?) is assigned a specific duty cycle, such that at least two pixel groups are assigned different duty cycles. The device furthermore comprises circuitry (54) for driving each pixel group (R?, G?, B?) at its assigned duty cycle. The invention also relates to the driving of such display devices.

Abstract: Driving apparatus, comprising at least two driving members (1, 2, 3, 4) and at least one driven member (5), wherein each of the at least two driving members are frictionally engaged to the at least one driven member (5) to move said driven member (5), wherein the friction between each driven member (5) and each driving member (1, 2, 3, 4) is such that the driven member moves when over half of the driving members (1, 2, 3, 4) being in frictional engagement with said driven member are moved simultaneously between a first and a second position, wherein the friction between each driven member (5) and each driving member (1, 2, 3, 4) is such that the driven member (5) substantially remains stationary when less than half of the driving members (1, 2, 3, 4) being in frictional engagement with said driven member is moved.

Abstract: A read/write head for a optical disk drive, comprises a lens holder (8), a support frame (11 12, 16), means (15) for suspending the lens holder (8) in the support frame which means constrain movement of the lens holder (8) relative to the support frame, allowing only an at least limited translation in a focussing direction (z), parallel to the optical axis of a lens (7) in the lens holder (8), an at least limited translation in a tracking direction (y), perpendicular to the focussing direction (z), and an at least limited rotation about an axis in a tangent direction (x), perpendicular to both the focussing and the tracking direction, and actuator means, comprising only two conductive focussing coils (9, 10) with a winding axis parallel to the focussing direction (z), each positioned relative to a magnetic circuit (11, 12) in such a way that a current flowing through a coil (9, 10) gives rise to a force between the lens holder (8) and the support frame in the focussing direction (z).

Abstract: An optical disc apparatus (1) for recording and/or reproducing information on/from an information surface (3) of a rotatable optical disc (5).