Abstract: A system to detect a status of a movable body having a status notification system from information supplied by a plurality of sensors installed on the movable body selectively transmits sensor information to a response apparatus connected to another network in a wireless manner based upon a result of the detection, and when the response apparatus requests additional sensor information, the status notification system transmits the stored sensor information selectively, thereby executing only the communication necessary for movable body rescue and support activities.

Abstract: The invention is intended to detect a status of a movable body having a status notification system from information supplied by a plurality of sensors installed on this movable body, selectively transmit, on the basis of the result of the detection, the sensor information to a response apparatus connected to another network in a wireless manner, and, when the response apparatus requests additional sensor information, the status notification system transmits the stored sensor information selectively, thereby executing only the communication necessary for movable body rescue and support activities.

Abstract: A method of presetting is provided, wherein a plurality of command signals associated with a plurality of apparatuses, a plurality of manufacturers, a plurality of format systems and a plurality of control operations are stored in a memory in advance. A detecting circuit is provided for sequentially transmitting predetermined command signals (e.g., a power on command) to an apparatus to be controlled in accordance with the operation in the preset mode to detect the operational mode of the apparatus to be controlled. As a result, the operation of the apparatus to be controlled can be automatically detected, and the type, the manufacturer and the format of the of the apparatus can be identified from the command signal transmitted.

Abstract: A method for printing a letter, character or a figure on an inner ear type headphone, which is a molded body of a thermoplastic synthetic resin, by irradiating the surface with a laser light, and a headphone housing on which the letter etc. has been printed by the above method. The printing is performed by irradiating the surface of the synthetic resin molded body with a laser light for expanding any moisture or air contained in the molded body for foaming the surface. Printing is achieved in the form of foamed regions of the synthetic resin and hence is clear and superior in abrasion resistance and durability.

Abstract: A method for printing a letter, character or a figure on an inner ear type headphone, which is a molded body of a thermoplastic synthetic resin, by irradiating the surface with a laser light, and a headphone housing on which the letter etc. has been printed by the above method. The printing is performed by irradiating the surface of the synthetic resin molded body with a laser light for expanding any moisture or air contained in the molded body for foaming the surface. Printing is achieved in the form of foamed regions of the synthetic resin and hence is clear and superior in abrasion resistance and durability.

Abstract: An electro-acoustic transducer includes a housing enclosing an electro-acoustic transducer device and having an opening by which the diaphragm side of the transducer device is exposed to the outside, and a ring provided to the outer surface of the perimeter of the opening. The outer perimeter of the ring is adapted to be softer and more pliable than the housing.

Abstract: An ear piece transducer having a housing incorporating therein an electroacoustic transducer element, the housing being inserted into a concave portion of an auricle, and a ring member having resiliency sufficient to enable it to be attached to the outer peripheral portion of the housing, the ring member being formed so as to be thickest in one radial direction.

Abstract: A connector apparatus having a connector socket and a connector plug arranged such that respective contacts of the connector socket and connector plug are kept in contact with each other by magnetic force, whereby when unintentional tension is applied to a cord, the cord can be prevented from being broken and the connector socket and the connector plug can be easily coupled to and/or removed from each other.

Abstract: A headphone having a speaker unit having a diaphragm and a supporting member for supporting the speaker unit so as to face forwardly of a user's head with projection of an edge portion thereof into the cavum concha whereby the speaker diaphgram faces to the entrance of a user's auditory canal with the sound radiating direction thereof.

Abstract: An earphone having a housing, a speaker unit accommodated in the housing and a duct formed in the housing to pass sound emanated from the rear surface of the speaker unit and in which a mesh subjected to water repellent treatment is provided within the duct.

Abstract: A speaker unit for headphones including a magnetic circuit which has a magnetic gap and including a diaphragm which is moveable to generate sound in response to energy applied to a coil wound on a bobbin which is connected to the diaphragm and mounted within the magnetic gap and including a frame for supporting the magnetic circuit and the diaphragm and a protecting means mounted at the front of the diaphragm and having projections so as to engage the diaphragm near the region where the bobbin is mounted so as to limit the maximum motion of the diaphragm and the protecting means formed with openings such that the protector prevents the bobbin from moving completely out of the magnetic gap. The invention is applicable to speaker units for open air type headphones, for example.

Abstract: An electro-acoustic transducer of the dynamic type, particularly a small loudspeaker or microphone, such as a loudspeaker for use in headphones, comprises a magnetic circuit including an air gap, a diaphragm having a voice coil disposed in the air gap, and lead wires for the voice coil, the lead wires extending substantially tangentially from the voice coil and being bonded to the diaphragm by two different kinds of adhesive, a relatively hard adhesive being used near the voice coil and a relatively soft adhesive being used near the periphery of the diaphragm.

Abstract: A diaphragm for an electro acoustic transducer, such as a loudspeaker, includes first and second parallel sheet members, a honeycomb core member sandwiched between the sheet members, and a damping layer interposed between each sheet member and the honeycomb core member for increasing the internal energy loss of the diaphragm.