Abstract: Congested rewriting in the same area is to be evaded to suppress the tendency towards occurrence of defective areas. When a stream 1 has been recorded, the last written address, representing the last written position, is stored. When recording a stream 2 next, recording is started directly following the position indicated by the last written address for the stream 1. The last written address, corresponding to the last address of the recording position, is stored. If the stream 2 is erased for recording a stream 3, recording is started not at a position directly following the last written address of the stream 1, but from a position directly following the last written address of the stream 2. When the stream 3 has reached the end of a recording area, the next following data is recorded as from a position directly following the stream 1.

Abstract: A radio communication apparatus capable of alleviating a burden in setting a transmission format and suppressing increases in the scale of the apparatus. In this apparatus, space multiplexing adaptability detection section (108) detects space multiplexing transmission adaptability for divided bands (DB-1 to DB-Nd) obtained by dividing a communication band to which Ns subcarrier signals belong in multicarrier transmission and to which a plurality of subcarrier signals belong, and outputs the detection results (#1 to #Nd). Transmission format setting section (110) sets a transmission format when carrying out radio transmission based on the detection results (#1 to #Nd) from space multiplexing adaptability detection section (108).

Abstract: A laser processing apparatus includes a laser generation apparatus for outputting an ultra-short pulse laser beam, a laser control apparatus for controlling the laser generation apparatus, an optical system, an optical system control apparatus for measuring the optical system, and a measurement apparatus for measuring the ultra-short pulse laser beam. The intensity of the largest noise component pulse in the ultra-short pulse laser beam is controlled to be 2.5% or less of the intensity of the primary pulse in the ultra-short pulse laser beam.

Abstract: An amplitude component and a phase component of a modulated signal are inputted into a power supply terminal and an input terminal of an RF power amplifier, respectively, and a modulated wave that is produced by demodulating an original modulated signal is obtained from the RF power amplifier. A supply voltage is supplied to an emitter follower and an operational amplifier via a switch group from a DC-DC converter group whose output voltages are sequentially different. As the supply voltage, any pair of outputs of DC-DC converters by the switch group is selected according to levels of the amplitude component, and provides them to the emitter follower and the operational amplifier. The emitter follower performs a DC conversion of the provided supply voltage to provide it to the RF power amplifier.

Abstract: An information recording method of recording information, in which laser light is applied to a recording medium while depending on predetermined information said laser light is modulated and the intensity of said light is controlled to form recording mark areas at which reflectivity of said recording medium changes, depending on the intensity of said applied light, wherein before starting data recording, said light is applied to said recording medium at predetermined light intensity, reflection light from said recording mark areas of said recording medium is received, the amount of said reflection light is detected, and a light intensity controlling reference value is calculated on the basis of the amount of said detected light, and during data recording, reflection light from said recording mark areas of said recording medium is received, the amount of said reflection light is detected, and a light intensity controlling detection value is calculated on the basis of the amount of said detected light, correcte

Abstract: A high-frequency circuit device is provided that is conformable to both of the TDMA system and the CDMA system as well as a plurality of frequency bands and achieves low cost and low power consumption. The high-frequency circuit device has a configuration including a transmission amplifier circuit for transmitting high-frequency power from an antenna that is composed of a high-frequency amplifier that is shared in the TDMA system and the CDMA system, a duplexer that is provided for performing simultaneous transmission/reception according to the CDMA system, upstream and downstream switch circuits in the direction of transmission that are provided so as to sandwich the duplexer between the transmission amplifier circuit and the antenna and are switched on when the simultaneous transmission/reception is performed according to the CDMA system, and a bypass switch circuit that bypasses the upstream and downstream switch circuits and the duplexer.

Abstract: The present invention relates to a non-volatile memory comprising: a first electrode (11); a second electrode (12); and a phase-change recording medium (14) sandwiched between the first electrode (11) and the second electrode (12), in which resistance value is varied by applying an electrical pulse across the first electrode (11) and the second electrode (12), at least one of the first electrode (11) and the second electrode (12) contains as a main ingredient at least one member selected from the group consisting of ruthenium, rhodium and osmium, and the phase-change recording medium (14) is formed of a phase-change material that contains chalcogen(s). This non-volatile memory exhibits improved durability and reliability by preventing deterioration of property (i.e., mutual impurity diffusion between the electrode and the phase-change recording medium) caused by application of current.

Abstract: The telephone apparatus of the present invention comprises a first voice band expander for generating a voiced signal frequency component by shifting the frequency of the voice signal received, a second voice band expander for generating a voiceless signal frequency component by shifting the frequency of the voice signal received, and a voice composer for composing the voice signal received, the output of the first voice band expander, and the output of the second voice band expander, which is able to output clear voices in aural communication.

Abstract: A global positioning system (GPS) is provided for displaying static cartographical data in accordance with a GPS signal and integrating dynamically updated data during display. The GPS system includes a receiver responsive to the global positioning signal. The receiver has a first communication module responsive to a signal of a content provider. The signal of the content provider defines dynamic content. The receiver has a data processor for integrating the dynamic content with the static cartographical data. A display device of the GPS system displays the integrated cartographical data and dynamic content. In this way, the dynamic content is provided to the global positioning system to alert an operator of traffic patterns and hospitality venues in relation to displayed static cartographical data.

Abstract: A motor has a stator formed by assembling stator members in an annular shape. The stator member includes a core segment formed of laminated electromagnetic steel sheets, an electrical insulator covering the core segment, and a coil wound on a tooth of the core segment via the insulator. At least parts of the insulator contacting the coil is made of highly heat-conductive insulating resin. A motor has a stator iron core formed of laminated electromagnetic steel sheets, and the motor includes a highly heat-conductive insulating sheet disposed on the laminated face of a slot of the stator iron core and a coil wound in a slot via the sheet. These structures allow the heat generated by the coil to travel to the core segment with ease, because of the resin or the sheet disposed between the core segment and the coil, thereby cooling the motor efficiently.

Abstract: In order to reduce a circuit scale such as a brightness adjustment circuit or the number of pins in an IC chip, in the brightness adjustment circuit, a brightness adjusted video signal (internal video signal) output from an analog signal synthesis circuit or a D/A converter is input to one input terminal of a switch and a sample/hold circuit. The sample/hold circuit holds a voltage of a level in accordance with the pedestal level of the internal video signal at a timing in accordance with a sampling pulse in synchronization with the internal video signal. A clamp circuit clamps the pedestal level of an external video signal in accordance with a clamp pulse, using the voltage held by the sample/hold circuit as the reference voltage, and input it to the other input terminal. The output terminal of the switch is connected to an amplifier.

Abstract: A rotary head in which the tape running load is decreased by setting the tape path cylindrical surface of an upper drum (12) in a range of winding of a tape (31) at an inner side relative to the tape path cylindrical surface of a lower drum (11). Alternatively, the tape path cylindrical surface of an inner drum (13) in a range of winding of the tape (31) is positioned at an outer side relative to the tape path cylindrical surface of the upper or lower drum.

Abstract: While a current of a constant current source 503 is equally divided to a plurality of current paths so as to produce a unit current, switches which are series-connected to the respective current paths are controlled by a switch circuit 504 in response to a digital input signal. As a result, since both output currents 505 and 506 whose unit currents are variable can be obtained, a total number of circuit components is reduced, so that not only an occupied area may be reduced, but also resolution in the vicinity of a center may be improved.

Abstract: Tilt correction means is operated so that the degree of modulation represented by the ratio of the amount of the detected reflected light from the groove areas G and the amount of the detected reflected light from the flat land areas L becomes maximal in a state wherein focus servo-control is made effective. Hence, the present invention can provide a system applicable to all optical disks including recording types and reproduction-only types, and capable of detecting a tilt correction signal without providing any special countermeasures on optical disks and devices, whereby it is possible to obtain an optical recording apparatus not adversely affecting the usage feeling of a user.

Abstract: A floppy disk drive has an exciting current supplying circuit and a control circuit for controlling the exciting current supplying circuit so that the exciting current is increased to a first predetermined value, reduced to a second predetermined value and then decreased to zero or raised to a third predetermined value. This arrangement has the effect of suppressing the counter electromotive force induced by the self induction of the motor coil, reducing noises on a power line and thereby preventing irregular rotation of the stepping motor.

Abstract: A diaphragm for speakers comprises a self-support, shaped body including a tightly woven synthetic polymer fiber cloth substrate which has, at least a diaphragm portion and edge portion shaped integrally with and extending from the diaphragm portion. The diaphragm portion of the cloth substrate had a polymer resin at least partially impregnated therein and the edge portion has a relatively flexible polymer material at least partially impregnated therein so that the edge portion is lower in stiffness than the diaphragm portion. The diaphragm-edge integral molding is fabricated by applying the respective types of polymers to the diaphragm and edge portions of the cloth substrate and subjecting the applied substrate to hot pressing in a mold capable of forming the integral molding. When applied as dynamic speakers, the integral molding exhibits a broad frequency band, low distortion rates and high sound quality.