Abstract: When a detection device detects any kind of change regarding track recording after the start of the track recording, a grouping instruction is given to information attaching and generating device. Then, the information attaching and generating device attaches the same group name information to a group, in which a track where the recording has been started in an information recording medium to a track recorded at the point when the grouping instruction has been received are made to be the same group, and group control information is generated. Therefore, since the grouping is automatically performed by any kind of change regarding the track recording, a user can omit the operation that he/she performs the grouping by himself/herself, and thus the operation load of the user can be reduced.

Abstract: Management information is read from an information storage medium having the management information recorded thereon, the management information including track number information imparted to at least one track and group management information for managing as selective recording information one or a plurality of tracks as one group. Judgment is then made upon whether the group management information is included in that management information. A display mode is changed depending on a case where the group management information is recorded and a case where it is not recorded, and it is then displayed in a displaying device.

Abstract: Management information is read from an information storage medium having the management information recorded thereon, the management information including track number information imparted to at least one track and group management information for managing as selective recording information one or a plurality of tracks as one group. Judgment is then made upon whether the group management information is included in that management information. A display mode is changed depending on a case where the group management information is recorded and a case where it is not recorded, and it is then displayed in a displaying device.

Abstract: An information reproducing apparatus which reads compressed information recorded on a recording medium by one of a plurality of different compression methods, writes the compressed information read into a memory, supplies the compressed information in the memory, to an expander in the order of writing and outputs reproduced information. The type of compression method used in compressing the information read from the recording medium is determined and the timing of starting to read the compressed information from the memory is controlled in accordance with a determination.

Abstract: Management information is read from an information storage medium having the management information recorded thereon, the management information including track number information imparted to at least one track and group management information for managing as selective recording information one or a plurality of tracks as one group. Judgment is then made upon whether the group management information is included in that management information. A display mode is changed depending on a case where the group management information is recorded and a case where it is not recorded, and it is then displayed in a displaying device.

Abstract: Management information is read from an information storage medium having the management information recorded thereon, the management information including track number information imparted to at least one track and group management information for managing as selective recording information one or a plurality of tracks as one group. Judgment is then made upon whether the group management information is included in that management information. A display mode is changed depending on a case where the group management information is recorded and a case where it is not recorded, and it is then displayed in a displaying device.

Abstract: Management information is read from an information storage medium having the management information recorded thereon, the management information including track number information imparted to at least one track and group management information for managing as selective recording information one or a plurality of tracks as one group. Judgment is then made upon whether the group management information is included in that management information. A display mode is changed depending on a case where the group management information is recorded and a case where it is not recorded, and it is then displayed in a displaying device.

Abstract: The information recording unit has a memory for firstly storing data, a record medium for intermittently recording the stored data in the memory, a record means for recording the data on the record medium, and a valid-data decision means for determining whether the recorded data is valid. The record means records the data in at least two different areas on the record medium, and the decision determines one valid data among the recorded data in the different areas. The unit includes a record control means for controlling the record means. The record control means provides a control command for the record means to record a predetermined quantity of data stored in the memory at a first recording location on the record medium and also provides a control command for the record means to read the predetermined quantity of the data at least one recording location different from the first recording location after the predetermined quantity of the data is recorded at the first recording location.

Abstract: An information reproduction unit has a data read means with a pickup for intermittently reading data recorded on a storage medium, a write means for writing the data in a memory, and a reproduction means for sequentially reading out the data written in the memory. The unit also has a defect detection means for detecting a defect of the storage medium during a data read waiting period. The defect detection means may determine the presence of a defect based on a readout result provided by the data read means. The unit may further include a storage means for storing a defect position information. Furthermore, a read characteristic may be adjusted on reading data at the defect position on the storage medium.

Abstract: An information reproducing apparatus in which the compressed information read from a disc is written to the memory, the written compressed information is read out in the order of writing and is supplied to an expansion device to obtain reproduced information. Writing of the compressed information to the memory is stopped when the amount of compressed information written to the memory increases to a first predetermined amount and writing of the compressed information to the memory is restarted when the amount of compressed information written decreases to a second predetermined amount which is smaller than the first predetermined amount and which is an amount corresponding to the compression ratio of the compressed information. The rotation speed of a spindle motor during a writing interruption period is lower than that during a writing period.

Abstract: A focus servo control is performed by changing a condition of a focus servo loop from an open condition to a close condition in correspondence with a level of a reflection light signal, which is obtained as a reflection light of a light beam reflected from an information record medium is detected by a light receiving element such as an optical pickup.

Abstract: By reacting trialkyl aluminum (AlR3) with 2-position substituted 8-quinolinol (q′H) at a mole ratio of 1:2, an AlRq′2-type aluminum compound having a specified structural formula is manufactured. The resulting compound is further reacted with an active hydrogen-containing organic compound to obtain a derivative such as an Alq′2q type derivative (wherein q represents 8-quinolinolato ligand and q′ represents 2-position substituted 8-quinolinolato ligand).

Abstract: Ink flow paths are formed that corresponds in number to the ink chambers of a mounted ink cartridge, to supply ink from the ink chambers to a recording head. These ink flow paths are constituted by first communication paths (59, 60), which communicate with the ink outlets of corresponding ink chambers, second communication paths (61, 67), which communicate with the corresponding ink inlets of the recording head, and convergent flow paths (65), which connect the first and the second communication paths and converge as they approach the recording head. Filters (56) are located in the second communication paths.

Abstract: In a vibrator unit, at least one piezoelectric vibrator is fixed on a base member in a cantilevered manner, such that a first region of the piezoelectric vibrator is fixed on a first face of the base member. A resin case is formed with a housing space extending through a first end face to a second end face thereof. The housing space includes a first housing part which opens to the first end face of the case, a second housing part which continues to the first housing part, and a third housing part which continues to the second housing part. In the first housing part, a part of the piezoelectric vibrator except for the first region is housed.

Abstract: In a vibrator unit, a plurality of piezoelectric vibrators are arranged on a base member in a cantilevered manner. A case is formed with a housing space having a bonding area at which a first inner portion of the housing space and a first face of the base member are opposed with a gap. At least one adhesive inlet, from which an adhesive is poured, communicates with the bonding area. At least one air outlet, from which air remaining in the bonding area is expelled as the poured adhesive fills the gap is provided.

Abstract: An information reproducing apparatus in which the compressed information read from a disc is written to the memory, the written compressed information is read out in the order of writing and is supplied to an expansion device to obtain reproduced information. Writing of the compressed information to the memory is stopped when the amount of compressed information written to the memory increases to a first predetermined amount and writing of the compressed information to the memory is restarted when the amount of compressed information written decreases to a second predetermined amount which is smaller than the first predetermined amount and which is an amount corresponding to the compression ratio of the compressed information. The rotation speed of a spindle motor during a writing interruption period is lower than that during a writing period.