摘要:
A disk-shaped recording medium (2) includes a transparent substrate (5), and an optical recording layer (4) and a magnetic recording layer (3) formed at one side of the transparent substrate (5). An optical head (6) applies light to the optical recording layer (4) from a light source via the transparent substrate, and focuses the light on the optical recording layer and reproduces information from the optical recording layer. A magnetic head (8) records information on the magnetic recording layer (3) or reproduces information from the magnetic recording layer. An optical head moving device (24,23) serves to move the optical head by a movement amount so as to focus the light on an optical track on the optical recording layer which has specified address information. A magnetic head moving device (20,21,22) serves to move the magnetic head to a specified magnetic track on the magnetic recording layer by referring to the movement amount of the optical head.
摘要:
The present invention relates to a data storage system for use with a storage medium (2) having recorded thereon a data format identifier identifying the kind of storage medium and including means for reading data recorded on said medium. According to the invention the data storage system is characterised in that the data reading means comprises means for determining in which of a plurality of locations on the medium (71A - 72A, 71B - 72B) the data format identifier is located so as to determine the kind of storage medium. The invention also relates to a method of identifying a storage medium for use in a data storage system including reading a data format identifier on the medium. According to the invention the method is characterised by the step of determining at which of a plurality of locations on the medium the data format identifier is located so as to determine the kind of storage medium.
摘要:
The present invention relates to a data storage system for use with a storage medium (2) having recorded thereon a data format identifier identifying the kind of storage medium and including means for reading data recorded on said medium. According to the invention the data storage system is characterised in that the data reading means comprises means for determining in which of a plurality of locations on the medium (71A - 72A, 71B - 72B) the data format identifier is located so as to determine the kind of storage medium. The invention also relates to a method of identifying a storage medium for use in a data storage system including reading a data format identifier on the medium. According to the invention the method is characterised by the step of determining at which of a plurality of locations on the medium the data format identifier is located so as to determine the kind of storage medium.
摘要:
Disk-shaped recording medium on which are recorded a first data signal, such as digital audio data, a second data signal in the direction of reproduction and of the disk, such as digital video data and computer program data, and identification data recorded in the read-in track for representing the fact that the second data signal has been recorded. It is possible for this recording medium to be reproduced by a reproducing apparatus which is exclusively used for a conventional disk-shaped recording medium on which the first data signal alone has been recorded. Also disclosed is an apparatus for reproducing the above-described disk-shaped recording medium. The apparatus includes: a circuit for processing the reproduction of the first data signal: a circuit for processing the reproduction of the second data signal: and a control circuit which is supplied with reproduction control data for discriminating between a conventional disk-shaped recording medium on which the first data signal alone has been recorded and a disk-shaped recording medium on which both the first and second data signals have been recorded. By the output of the control circuit, the control of the reproducing operation of a pickup is changed over, and the circuits for processing the reproduction of the first and second data signals are also changed over from one to the other.
摘要:
A disc recording/reproducing apparatus for recording data onto or reproducing from an optically recordable disc (1) which has a lead-in region (6) close to a recording region (5) for recording play data or like data. A program data for reproducing the program is recorded onto the lead-in region (6) of the disc (1). Therefore, the program can be easily reproduced for even many discs without the need of using a memory of a large capacity. Even in using other apparatuses, furthermore, the program operation need not be effected again, and the same program can be reproduced.
摘要:
A container (4l) for containing a flexible magnetic disk is provided with a magnetic recording medium (58) mounted on a predetermined area of an outer surface of the container (4l) for magnetic recording of administration information for administrating filing information recorded on the flexible magnetic disk contained in the container (4l). The container (4l) comprises a containing casing (43) having an outer casing surface for containing the flexible magnetic disk and a shutter (44) having an outer shutter surface. The magnetic recording medium (58) is mounted on a predetermined area of the outer casing surface. The containing casing (43) has an opening for permitting a magnetic head to access the flexible magnetic disk. The shutter (44) is slidable on a preselected area (55) of the outer casing surface to selectively open the opening. The predetermined area is selected at a desired position on a specific area of the outer casing surface except the preselected area. Alternatively, the magnetic recording medium (58) may be mounted on a predetermined area on the outer shutter surface of the shutter (44).
摘要:
Disk-shaped recording medium on which are recorded a first data signal, such as digital audio data, a second data signal in the direction of reproduction and of the disk, such as digital video data and computer program data, and identification data recorded in the read-in track for representing the fact that the second data signal has been recorded. It is possible for this recording medium to be reproduced by a reproducing apparatus which is exclusively used for a conventional disk-shaped recording medium on which the first data signal alone has been recorded. Also disclosed is an apparatus for reproducing the above-described disk-shaped recording medium. The apparatus includes: a circuit for processing the reproduction of the first data signal; a circuit for processing the reproduction of the second data signal; and a control circuit which is supplied with reproduction control data for discriminating between a conventional disk-shaped recording medium on which the first data signal alone has been recorded and a disk-shaped recording medium on which both the first and second data signals have been recorded. By the output of the control circuit, the control of the reproducing operation of a pickup is changed over, and the circuits for processing the reproduction of the first and second data signals are also changed over from one to the other.