Abstract: There is provided a display driver incorporating a RAM in which a plurality of memory cells having a three-port configuration can be provided within an interval of output electrodes thereof, and a display unit and an electronic apparatus utilizing the same. The memory cells include a flip-flop comprised of first and second inverters. A first node of the flip-flop is connected to a CPU bit line and an RGB bit line through an N-type MOS transistor. A P-type MOS transistor and an N-type MOS transistor are connected to a second node of the flip-flop. The N-type MOS transistor is connected to a ground potential level at the source terminal thereof. A set signal for each pixel is supplied to the gate terminal of only the flip-flop associated with the pixel to be written, and the set signal sets the second node at the ground potential level.

Abstract: A stylus assembly for damping impulsive radial motion of the stylus during playback of a grooved video disc record. Included in the stylus assembly is a moment arm perpendicularly attached at the free end of the stylus arm and parallel to the disc record when the stylus is engaged for playback. A mass is mounted to the moment arm to contribute increased inertia to lateral motion of the stylus only in a direction radially across the record. The mass is designed to permit tracking a record groove in the presence of groove eccentricity but to resist motion due to impulsive forces imparted by record defects or particulate matter thereon.

Abstract: A pickup arm for use in phonographs or the like having a contactless inside-force cancelling device and/or a contactless stylus-force application device; the contactless inside-force cancelling device having a rotatable control magnet, a stationary control magnet, a cylindrical magnet fixed around the vertical pivot of the pickup arm, the rotatable and stationary control magnets combinedly forming a magnetic field in which the cylindrical magnet is rotatably placed, wherein rotation of the rotatable control magnet changes the magnetic flux density of the magnetic field to give the vertical pivot a torque sufficient to cancel the inside force of the stylus; the contactless stylus-force application device having a rotatable control magnet, a stationary control magnet, a cylindrical magnet fixedly provided on a horizontal axle fixed between the prongs of a forked end provided on the vertical pivot, the rotatable and stationary control magnets combinedly forming a magnetic field in which the cylindrical magnet is