Abstract: A recording medium changer includes a plurality of storage trays that are arranged in alignment in a predetermined direction and each store a recording medium, and a conveying mechanism that is movable in an alignment direction of the plurality of storage trays and conveys a recording medium. The plurality of storage trays are rotatable about an axis extending in the alignment direction of the storage trays. At the time of rotation of each of the storage trays, the conveying mechanism is held in a movement preparing position retracted in the alignment direction from the storage tray that is being rotated. Each of the storage trays has a movement cutout for forming at least a part of a movement space through which the conveying mechanism is moved.

Abstract: A recording medium changer includes a plurality of storage trays that are arranged in alignment in a predetermined direction and each store a recording medium, and a conveying mechanism that is movable in an alignment direction of the plurality of storage trays and conveys a recording medium. The plurality of storage trays are rotatable about an axis extending in the alignment direction of the storage trays. At the time of rotation of each of the storage trays, the conveying mechanism is held in a movement preparing position retracted in the alignment direction from the storage tray that is being rotated. Each of the storage trays has a movement cutout for forming at least a part of a movement space through which the conveying mechanism is moved.

Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.

Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.

Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.

Abstract: The invention provides a disk changer which is improved in convenience in use and functionality. The disk changer includes a rotatable tray having a plurality of annularly arranged accommodation portions, a tray rotating mechanism, first and second recording and/or reproduction sections each for recording and/or reproducing an information signal onto and/or from one of the disk-type recording media, and first and second disk takeout mechanisms each for taking out a disk-type recording medium accommodated in an accommodation portion of the rotatable tray and transporting the disk-type recording medium to the corresponding recording and/or reproduction section and for taking out the disk-type recording medium from the corresponding recording and/or reproduction section and transporting the disk-type recording medium to an accommodation portion of the rotatable tray.

Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.

Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.

Abstract: A recording and/or playback apparatus of a dislike recording medium, such as optical disk, is equipped with a receiving portion, a recording and/or playback portion, an ejecting operation mechanism, a loading mechanism, and a positioning mechanism. In the receiving portion, a plurality of supporting portions supporting respective peripheral ends of a plurality of disklike recording media are formed in an annular form, and an opening portion is formed on the supporting portion. The recording and/or playback portion conducts recording and/or playback of the disklike recording media. The ejecting operation mechanism penetrates from the opening portion of the receiving portion and ejects a desired disklike recording medium out of the disklike recording media, from the supporting portion.

Abstract: The invention provides a disk changer which is improved in convenience in use and functionality. The disk changer includes a rotatable tray having a plurality of annularly arranged accommodation portions, a tray rotating mechanism, first and second recording and/or reproduction sections each for recording and/or reproducing an information signal onto and/or from one of the disk-type recording media, and first and second disk takeout mechanisms each for taking out a disk-type recording medium accommodated in an accommodation portion of the rotatable tray and transporting the disk-type recording medium to the corresponding recording and/or reproduction section and for taking out the disk-type recording medium from the corresponding recording and/or reproduction section and transporting the disk-type recording medium to an accommodation portion of the rotatable tray.

Abstract: An adjustment method for optical pick-up including a light source for emitting light beams, an object lens for irradiating light beams onto an optical disc for adjustment and a drive portion for driving the object lens in a direction in parallel to the optical axis of the object lens and in a direction perpendicular to the optical axis thereof, wherein in the state where the light source is movably held with respect to the object lens and the drive portion is movably held with respect to the light source, light beams are irradiated onto an optical disc for adjustment concentrically having recording tracks from the optical pick-up to adjust relative position of the object lens with respect to the light source and inclination of the optical axis of the object lens, and an optical disc for adjustment used in such an adjustment method.

Abstract: An optical pickup device for recording and/or reproducing the information on or from an optical disc.

Abstract: The present invention is directed to a disc reproducing apparatus in which a signal recorded on a disc is optically read out from the disc and reproduced as an audio signal. This disc reproducing apparatus includes a memory in which digital data is stored temporarily, a controller for controlling write and read of the memory such that the digital data is intermittently written in the memory at the first transfer rate and the digital data is continuously read out from the memory at a second transfer rate lower than the first transfer rate and a display device for displaying an amount of the digital data stored in the memory so that an increase or decrease of the amount of the digital data can be visually confirmed. Further, the present invention is directed to a disc recording apparatus in which an input digital audio signal is encoded and recorded on a disc. This disc recording apparatus includes a memory in which compressed data is temporarily stored.

Abstract: A disc loading device for loading discs of different diameters on a disc rotating driving device provided within a outer casing is disclosed. The discs are the recording media on which information signals are pre-recorded or are to be recorded. The disc loading device includes a supporting base provided with the disc rotating driving device for rotationally driving the discs, and a disc transporting tray for holding and transporting the discs. The disc transporting tray is arranged above the supporting base and is movable between a position in which it is drawn into an outer casing containing the supporting base and a position in which it is drawn out of the outer casing.

Abstract: A disc changer device includes a housing section, a transporting unit, a recording and/or reproducing unit and a movement unit. The housing section houses a number of discs, such as compact discs, with a pre-set distance between neighboring discs, in a state in which disc surfaces face one another. The transport unit holds one of the discs in the housing section from the direction of disc thickness for transport between it and the recording and/or reproducing unit. The recording and/or reproducing unit records and/or reproduces the disc transported from the housing section by the transporting unit. The movement unit moves at least one of the discs positioned in the housing section and held by the transporting unit in a direction away from the disc held by the transporting unit when holding the disc from the direction of disc thickness out of the housing section by the transporting unit and/or when returning the disc by the transporting unit into the housing section.

Abstract: A disc changer device includes a housing section, a transporting unit, a recording and/or reproducing unit and a movement unit. The housing section houses a number of discs, such as compact discs, with a pre-set distance between neighboring discs, in a state in which disc surfaces face one another. The transport unit holds one of the discs in the housing section from the direction of disc thickness for transport between it and the recording and/or reproducing unit. The recording and/or reproducing unit records and/or reproduces the disc transported from the housing section by the transporting unit. The movement unit moves at least the discs positioned in the housing section and held by the transporting unit in a direction away from the disc held by the transporting unit when holding the disc from the direction of disc thickness out of the housing section by the transporting unit and/or when returning the disc by the transporting unit into the housing section.

Abstract: A disk recording and/or reproducing apparatus having a disk exchanging function includes a stocker portion, a rotary drive mechanism, a recording and/or reproducing mechanism and a conveying mechanism. The stocker portion stocks therein a plurality of disks lengthwise. The stocker portion includes a plurality of recess portions in which a plurality of disks are stocked. A plurality of recess portions are disposed radially. The recess portion has a substantially V-like cross section at its portion contacting with an outer peripheral edge portion of the disk. The rotary drive mechanism rotates the stocker portion. The recording and/or reproducing mechanism records and/or reproduces the disk. The conveying mechanism extracts a desired disk from the stocker portion rotated by the rotary drive mechanism, conveys the extracted desired disk to the recording and/or reproducing mechanism, extracts the disk from the recording and/or reproducing mechanism and conveys the disk to the stocker portion.