Abstract: A magneto-optical head including a lens forming a light spot on a storage disk, a magnetic field generating coil arranged between the lens and the disk to surround the optical center of the lens, and an annular heat sink arranged around the coil. The distance between the outer circumference of the coil and the inner circumference of the heat sink is 70–100 ?m.

Abstract: A data storing/reproducing apparatus includes a storing unit for storing inputted data, a range designating unit for designating an arbitrary range within the inputted data, an outputting unit for outputting the data stored in the storing unit, and a control unit for not outputting data in a range designated by said range designating unit when the data stored in the storing unit is outputted from the outputting unit. In this data storing/reproducing apparatus, when voice or sound is externally entered to be stored in the storing unit, and voice data is reproduced/outputted, a range used to limit the voice data output is set by the range setting unit. Then, when the data stored in the storing means is outputted by the outputting unit, since no data is outputted only in the designated range under control of the control unit, the secrecy of the stored voice data can be maintained.

Abstract: An electronic timepiece, which comprises a circuit for encoding an externally supplied voice and a semiconductor memory for memorizing the encoded voice data. The voice data memorized in the semiconductor memory is read out when a preset time is reached, and the data thus read out is converted into a voice signal which is coupled to a sound producing device such as a loudspeaker for the reproduction of the voice.