Abstract: The local 5G monitoring system includes measuring devices that measure radio waves from a base station of the local 5G system, and a server device that belongs to the same local area network (LAN) as the measuring devices, or is connected to the Internet, and collects measurement data from the measuring devices, in which the server device generates, based on the measurement data measured by the measuring devices at predetermined time intervals, a heat map showing a distribution of states of the measurement data, and displays the heat map at a time designated by a user, from the generated heat map.

Abstract: The local 5G monitoring system includes a measuring device that measures radio waves from a base station of a local 5G system, wireless terminals, a first server device that belongs to the same wireless local area network (wireless LAN) as the measuring device and the wireless terminals, collects measurement data from the wireless terminals, belongs to the same local area network (LAN) as the measuring device, and is connected to the Internet, and a second server device that is connected to the first server device via the Internet, and is configured to be referred to by a user, in which the first server device uses the measurement data when installation of the local 5G system is completed, as reference information, and determines and notifies the user that an abnormal state occurs, when the measurement data during an operation of the local 5G system exceeds a threshold from the reference information.

Abstract: The local 5G monitoring system includes the wireless terminals that measure radio waves from a base station of a local 5G system, a first server device that belongs to the same wireless local area network (wireless LAN) as the wireless terminals, collects measurement data from the wireless terminals, and is connected to the Internet, and a second server device that is connected to the first server device via the Internet, and is configured to be referred to by a user, in which the first server device uses the measurement data from the wireless terminals when installation of the local 5G system is completed, as reference information, and determines and notifies the user that an abnormal state occurs, when the measurement data from the wireless terminals during an operation of the local 5G system exceeds a threshold from the reference information.

Abstract: The local 5G monitoring system includes measuring devices that measure radio waves from a base station of a local 5G system, and a server device that collects measurement data from the measuring devices, in which the server device uses the measurement data from the measuring devices when installation of the local 5G system is completed, as reference information, and determines that an abnormal state occurs, when the measurement data from the measuring devices during an operation of the local 5G system exceeds a threshold from the reference information.

Abstract: The local 5G monitoring system includes measuring devices that measure radio waves from a base station of the local 5G system, a first server device that belongs to the same local area network (LAN) as the measuring devices, and collects measurement data from the measuring devices, and a second server device that is connected to the first server device via the Internet, and is configured to be referred to by a user, in which the first server device uses the measurement data from the measuring devices when installation of the local 5G system is completed, as reference information, and determines and notifies the user that an abnormal state occurs, when the measurement data from the measuring devices during an operation of the local 5G system exceeds a threshold from the reference information.

Abstract: In an optical disc library apparatus having a cartridge storing discs; a drive carrying out recording and playback with respect to the discs; and a robot carrying out disc movements between the aforementioned cartridge and the aforementioned drive; wherein: the periphery of a disc is point restrained in three places during disc movement.

Abstract: In an optical disc library apparatus having a cartridge storing discs; a drive carrying out recording and playback with respect to the discs; and a robot carrying out disc movements between the aforementioned cartridge and the aforementioned drive; wherein: the periphery of a disc is point restrained in three places during disc movement.

Abstract: In an optical disc apparatus, a metallic member forming an optical pickup, such as a bottom cover member of the optical pickup, has a protrusion in an integral form on the portion of the metallic member that is opposed to a plane of a flexible printed-wiring board, and the optical pickup is constructed so that when it comes into contact with an opposed face of the flexible printed-wiring board, the optical pickup brings a front end of the protrusion into contact with the opposed face.

Abstract: A restraining element 70 to be inserted into a center hole 102 in an optical disk 100 to restrain movement of the optical disk 100 in its radial direction is placed on a central portion 61 of an optical-disk-facing surface 52 of a rotor casing 53 for a disk motor 50; a supporting element 65 for supporting an optical disk surface 101 of the optical disk 100 is placed on a radially outer portion 62 of the optical-disk-facing surface 52; and flow paths 65A to 65C are provided in the supporting element 65, and extend from the outer circumference of the supporting element 65 to its inner circumference to allow the air inside this optical disk device to flow through.

Abstract: In a recording disk drive apparatus including, a chassis including a chassis body, a spindle motor fixed to the chassis body to support and rotationally drive a recording disk, and a head supported on the chassis body to be movable on the chassis body in a radial direction of the recording disk so that an information is recorded into the recording disk and/or read from the recording disk through the head, a base member on which the chassis is supported, and an elastic member through which the chassis is supported on the base member so that a vibration transmitted from the chassis is absorbed at least partially by an elasticity of the elastic member, the chassis includes a counter member elastically supported on the chassis body with a spring constant for the counter member in which spring constant the counter member is elastically movable with respect to the chassis body.

Abstract: A drive current or a drive voltage is controlled corresponding to change of load by sampling the drive current or drive voltage of a motor to move an optical pickup and then detecting change of the sampling signal as change of the optical pickup when it is moved. Moreover, change of the sampling signal is obtained from a difference of the sampling signals by comparing these sampling signals at the first and second points. Comparison of these sampling signals is conducted in unit of drive pulse.

Abstract: In an optical disc apparatus, a metallic member forming an optical pickup, such as a bottom cover member of the optical pickup, has a protrusion in an integral form on the portion of the metallic member that is opposed to a plane of a flexible printed-wiring board, and the optical pickup is constructed so that when it comes into contact with an opposed face of the flexible printed-wiring board, the optical pickup brings a front end of the protrusion into contact with the opposed face.

Abstract: In a recording disk drive apparatus including, a chassis including a chassis body, a spindle motor fixed to the chassis body to support and rotationally drive a recording disk, and a head supported on the chassis body to be movable on the chassis body in a radial direction of the recording disk so that an information is recorded into the recording disk and/or read from the recording disk through the head, a base member on which the chassis is supported, and an elastic member through which the chassis is supported on the base member so that a vibration transmitted from the chassis is absorbed at least partially by an elasticity of the elastic member, the chassis includes a counter member elastically supported on the chassis body with a spring constant for the counter member in which spring constant the counter member is elastically movable with respect to the chassis body.

Abstract: A drive current or a drive voltage is controlled corresponding to change of load by sampling the drive current or drive voltage of a motor to move an optical pickup and then detecting change of the sampling signal as change of the optical pickup when it is moved. Moreover, change of the sampling signal is obtained from a difference of the sampling signals by comparing these sampling signals at the first and second points. Comparison of these sampling signals is conducted in unit of drive pulse.

Abstract: A drive current or a drive voltage is controlled corresponding to change of load by sampling the drive current or drive voltage of a motor to move an optical pickup and then detecting change of the sampling signal as change of the optical pickup when it is moved. Moreover, change of the sampling signal is obtained from a difference of the sampling signals by comparing these sampling signals at the first and second points. Comparison of these sampling signals is conducted in unit of drive pulse.

Abstract: An optical disk apparatus of low consumption of electric power, wherein heat generation is suppressed within a stepping motor for use of drive of a pickup, as one of the heat generation sources, comprises: a pickup 3 for irradiating a laser light upon an optical disk by means of a laser diode; a disk motor for rotating the optical disk mounted thereon; a stepping motor 5 for moving the pickup in the disk radial direction; and a system controller 6 for controlling driving current of the laser diode and rotation speed of the disk motor, as well as, conducting the position control on the pickup through the stepping motor, wherein the stepping motor has a temperature sensor 31 within an inside thereof, and the current to be supplied to the stepping motor is set to be within a predetermined range, so as to control the rotation speed thereof, so that the temperature within an inside is suppressed from increasing, depending upon the temperature detected.

Abstract: A drive current or a drive voltage is controlled corresponding to change of load by sampling the drive current or drive voltage of a motor to move an optical pickup and then detecting change of the sampling signal as change of the optical pickup when it is moved. Moreover, change of the sampling signal is obtained from a difference of the sampling signals by comparing these sampling signals at the first and second points. Comparison of these sampling signals is conducted in unit of drive pulse.

Abstract: A stepping motor (5) for rotating a screw (14) for driving a pickup (3) for axial movement is disposed near the inner circumference of a disk (100) with its axis aligned with that of the screw (14). The stepping motor (5) has a thickness of 7 mm or below.

Abstract: A tape loading mechanism used in a recording and reproducing apparatus for extracting a tape from a cassette and for winding it on a tape guide drum on which a rotating head for recording information on or reproducing information from the tape is mounted. A guide base, on which a group of guides for extracting the tape from the cassette are mounted, is rotatably supported by a shaft on a drive member that drives the guide base. An attitude control member is installed along the path of travel of the guide base to engage with the sides of the guide base to control the rotating angle of the latter.

Abstract: A tape loading mechanism used in a recording and reproducing apparatus for extracting a tape from a cassette and for winding it on a tape guide drum on which a rotating head for recording information on or reproducing information from the tape is mounted. A guide base, on which a group of guides for extracting the tape from the cassette are mounted, is rotatably supported by a shaft on a drive member that drives the guide base. An attitude control member is installed along the path of travel of the guide base to engage with the sides of the guide base to control the rotating angle of the latter.