Abstract: A heat generating member includes: a hollow cylindrical part that is rotatable about a rotation axis and extends in an axial direction; a first heat generating component provided on an inner surface of the cylindrical part and configured to generate heat when energized; a first connecting component provided on an inner side relative to the cylindrical part and electrically connected to the first heat generating component, the first connecting component being rotatable together with the cylindrical part; a second connecting component provided on a further inner side relative to the cylindrical part than the first connecting component and electrically connected to a power source, the second connecting component being rotatable relative to the cylindrical part; a rotary supporting component that electrically connects the first connecting component and the second connecting component to each other and supports the first connecting component while allowing the first connecting component to rotate relative to the s

Abstract: A belt unit includes: a belt-shaped member being endless; and a support member that supports the belt-shaped member and rotates, the support member having a rotating shaft that tilts in: a tilt direction having a component in a first direction intersecting a bisector of a central angle of a wrapping range where the belt-shaped member is wrapped around the support member and a component in a second direction where the belt-shaped member elongates and contracts; and a direction where extent of shifting of the belt-shaped member to one side in the width direction of the belt-shaped member is reduced.

Abstract: An electric working machine according to one aspect of the present disclosure includes an output shaft, a motor, a transmitting device, a drive device, a controller, and a current path. The transmitting device has transmittable allowable torque and transmits rotation of the motor to the output shaft. The drive device energizes the motor with electric supply from a battery in accordance with a command from outside the electric working machine. The current path is configured to be able to energize the motor with a current value larger than an allowable current value required to limit torque generated in the transmitting device due to rotation of the motor to the allowable torque or smaller.

Abstract: An electric working machine according to one aspect of the present disclosure includes an output shaft, a motor, a transmitting device, a drive device, a controller, and a current path. The transmitting device has transmittable allowable torque and transmits rotation of the motor to the output shaft. The drive device energizes the motor with electric supply from a battery in accordance with a command from outside the electric working machine. The current path is configured to be able to energize the motor with a current value larger than an allowable current value required to limit torque generated in the transmitting device due to rotation of the motor to the allowable toque or smaller.

Abstract: An electric power tool of an embodiment of the present invention uses a motor provided with a yoke as a drive source, and is configured such that an end portion of an electric component mounted on a drive circuit of the motor is electrically connected to the yoke of the motor through a conductive elastic body.

Abstract: An electric power tool has an electric motor disposed in a main body and a power supply circuit electrically connected to the electric motor by wires to supply electric power to the electric motor. A switch is disposed in the power supply circuit so as to electrically open and close the power supply circuit. A movable member is supported by the main body, a detector is disposed in the main body to detect a movement of the movable member and the switch is configured to electrically open the power supply circuit when the detector detects the movement of the movable member. The wires connected to the electric motor are not connected to the detector so that the length of the wires is shortened.

Abstract: An electric power tool of an embodiment of the present invention uses a motor provided with a yoke as a drive source, and is configured such that an end portion of an electric component mounted on a drive circuit of the motor is electrically connected to the yoke of the motor through a conductive elastic body.

Abstract: An electric power tool has an electric motor disposed in a main body and a power supply circuit electrically connected to the electric motor by wires to supply electric power to the electric motor. A switch is disposed in the power supply circuit so as to electrically open and close the power supply circuit. A movable member is supported by the main body, a detector is disposed in the main body to detect a movement of the movable member and the switch is configured to electrically open the power supply circuit when the detector detects the movement of the movable member. The wires connected to the electric motor are not connected to the detector so that the length of the wires is shortened.

Abstract: Music piece data of so-called managed music pieces, each of which requires allowance of performance for each karaoke apparatus are stored in a hard disk in the same manner as music piece data of other karaoke music pieces. A ROM (20), which has stored therein key data for allowing performance of a managed music piece, is produced for each of the managed music pieces and for each of karaoke apparatuses. Performance of a managed music piece is allowed by setting a corresponding ROM (20) into a karaoke apparatus. Accordingly, a karaoke apparatus is not required to have a medium such as a CD-ROM for each of managed music pieces, and the copyright holder of a managed music piece can physically manage the number of allowed performances by way of the ROM (20).

Abstract: The remote controller inserts the IP address IP-user of the remote controller into an infrared signal and transmits the infrared signal to the karaoke terminal as a service terminal. The karaoke terminal uses the IP address IP-user extracted from the infrared signal to perform communications with the remote controller via a LAN and a wireless access point.

Abstract: In an informing mode, a coin box outputs informing pulses, the number of which corresponds to the number of remaining credits, in response to pulses supplied from a service providing apparatus (steps S23 to S26). The service providing apparatus counts the number of informing pulses to detect the number of remaining credits. In an accounting mode, when the coin box detects a pulse output from the service providing apparatus, the coin box decrements the number of remaining credits one by one for every detection of a pulse output from the service providing apparatus (steps S27 to S29). In this way, the accounting is performed by decrementing the number of remaining credits in the coin box by the number of pulses corresponding to the service compensation.

Abstract: Even music piece data of so-called managed music pieces each of which requires allowance of performance for each karaoke apparatus are stored in a hard disk in the same manner as music piece data of other karaoke music pieces. A ROM (20), which has stored therein key data for allowing performance of a managed music piece, is produced for each or the managed music pieces and for each of karaoke apparatuses. Performance of a managed music piece is allowed by setting a corresponding ROM (20) into a karaoke apparatus. Accordingly, a karaoke apparatus is not required to have a medium such as a CD-ROM for each of managed music pieces, and the copyright holder of a managed music piece can physically manage the number of allowed performances by way of the ROM (20).

Abstract: In an informing mode, a coin box outputs informing pulses the number of which corresponds to the number of remaining credits, in response to pulses supplied from a service providing apparatus (steps S23 to S26). The service providing apparatus counts the number of informing pulses to detect the number of remaining credits. In an accounting mode, when the coin box detects a pulse output from the service providing apparatus, the coin box decrements the number of remaining credits one by one for every detection of a pulse output from the service providing apparatus (steps S27 to S29). In this way, the accounting is performed by decrementing the number of remaining credits in the coin box by the number of pulses corresponding to the service compensation.

Abstract: A karaoke network system is composed of a central station for serving a plurality of song data pieces, and a karaoke terminal connected to the central station through a communication network having multiple channels for selectively receiving therefrom one song data piece so as to locally present a desired karaoke song in response to a request, command. The central station includes a transmitter for sorting the plurality of song data pieces into a multiple of groups corresponding to the multiple channels to thereby transmit each group of the song data pieces successively to the corresponding channel in an endless manner. The karaoke terminal includes a receiver for selecting one of the channels designated by the request command and for picking up one song data piece specified by the same request command from the selected channel so that the karaoke terminal can present the desired karaoke song according to the picked up song data piece.

Abstract: A karaoke apparatus has an information source for providing a performance data containing musical tone designation information, lyric indication information and fading control information according to progression of a karaoke song in response to a request. A tone generator operates according to the musical tone designation information for generating musical tones of the karaoke song. A first signal generator operates according to the lyric indication information for generating a lyric image signal indicative of lyric words of the karaoke song. A second signal generator generates a background image signal representative of a background scene of the karaoke song.

Abstract: A device for reducing noise includes a first delay circuit for producing a first delay signal which is spacewise continuous to a current signal, a second delay circuit for producing a second delay signal which is timewise continuous to the current signal, first and second signal coincidence judging circuits for comparing the current signal with the first and second delay signals at a smapling period and judging whether or not difference in level between the current signal and the first and second delay signals is below a predetermined value continuously for a predetermined number of samples, and a conditional averaging circuit for providing, when it has been judged by the first or second signal coincidence judging circuit that the condition that difference in level between the current signal and the first or second delay signals is below the predetermined value continuously for the predetermined number of samples has been satisfied, an output signal which is an average value of one or both of the delay signal

Abstract: A tilt servo circuit for controlling an optical axis of an optical pickup perpendicularly to the surface of an optical disc such as a Laser Vision Disc or a Compact Disc playbed back by an optical disc playback device comprises a RF level detection circuit for detecting level of an RF reproduced signal from an optical pickup, a tilt changing circuit for changing a tilt angle of the optical pickup, and a tilt servo control circuit for controlling the tilt changing circuit so as to bring the RF level to maximum or substantially maximum. The level of the RF reproduced signal varies with inclination of laser beam with respect to the perpendicular direction to the disc surface, namely the RF level is at the maximum when the inclination is zero and it decreases as the inclination increases. By detecting the RF level and controlling the tilt changing circuit in a manner to bring the RF level to the maximum, the inclination of the optical axis of the laser beam can be corrected.

Abstract: An optical pickup control device receives a laser beam reflected from a disc pit with a four split photo-detector and performs a tracking servo in response to two diagonal sum outputs of this four split photo-detector. The device comprises a neutral position control circuit which receives a left adjacent sum output and a right adjacent sum output of the four split photo-detector and, in response to these adjacent sum outputs, controls a neutral position of an objective lens so that these adjacent sum outputs become equal to each other. In an embodiment of the invention, the neutral position control circuit servo-controls a feed motor of the optical pickup with a difference signal between the left and right adjacent sum outputs. The device effectively corrects deviation of a beam spot from a center of the four split photo-detector and thereby improves the quality of a tracking error signal.

Abstract: In picking up recorded data from a revolving optical disc by an optical reproduction system in an optical type disc reproduction device and detecting time data of Q subcode from the picked up data for performing operations such as searching a target position, the position control device according to this invention facilitates handling of data in cases such as computing time difference by converting detected present time data from a BCD code into a binary code by a BCD/binary conversion circuit and using the binary coded data. For searching a target position, time difference is detected by a time difference detection circuit on the basis of a difference between the binary coded present time data and target time data and a relative position of the optical reproduction system with respect to the optical disc is changed by a relative position change driver such that the time difference is reduced to zero.

Abstract: A power amplifying circuit detects the crest factor of an electric signal, especially an audio signal, requiring amplification. In case this crest factor is great, the level of supply voltage for power amplifying elements of the power amplifying circuit is raised, and conversely in case the crest factor is small, the supply voltage level is lowered, thereby minimizing the development of distortions in the power amplifying elements as well as minimizing thermal loss thereof.