Abstract: A moving mechanism relatively moves a machining head emitting a laser beam, with respect to a sheet metal along a surface of the sheet metal. A beam vibrating mechanism vibrates the laser beam for irradiation on the sheet metal, while the machining head is relatively moved by the moving mechanism. A machining condition setting section sets pattern selection information to select a vibration pattern of the laser beam by the beam vibrating mechanism, and a parameter to determine a vibrating way in the vibration pattern, in accordance with machining conditions specified for each machining command to machine the sheet metal in a machining program generated to machine the sheet metal, and including a machining velocity of the sheet metal associated with relative movement of the machining head by the moving mechanism.

Abstract: The present invention relates to a recording and reproducing device including a DVD unit, an HDD unit and a VCR unit and an MPEG board which processes both video/audio signals of the DVD unit and the HDD unit and provides a recording and reproducing device capable of efficiently radiating heat of an MPEG IC mounted on the MPEG board. A plane 20a of an MPEG IC 20 mounted on an MPEG board 12 is contacted with a contacting surface 4b of a bottom face 4a of a chassis 4 and heat generated in the MPEG IC 20 is directly radiated over the bottom face 4a of the chassis 4. Furthermore, a cooling fan 7 is placed at the back of a recording and reproducing device 1 and heat radiated over the bottom face 4a of the chassis 4 is cooled with a cooling wind.

Abstract: It is an object to decrease the influence of a noise generated from an operating device without providing a shielding plate in an audio and video combined apparatus in which a DVD unit and a video cassette unit are provided in the same housing. A double-sided board (13) mounting a DVD operating device (5) and a video operating device (10) is provided between a video cassette deck (8) and a bottom plate panel (1a) of a housing (1). The DVD operating device (5) is positioned below the video cassette deck (8). The DVD operating device (5) is surrounded by a metallic chassis of the video cassette deck (8) and the metallic bottom plate panel (1a) of the housing (1) and is thus shielded electromagnetically. A noise generated from the DVD operating device (5) is shielded so that the video cassette deck (8) is not influenced.