摘要:
An absolute time area is expanded by using an area of relatively low importance such as zero-data area and/or relative time area or the like in a Q channel in a sub-code in a recording format of a CD. Thus, an absolute time expression which can cope with a disc having a large capacity or the like can be performed. An absolute time expression is performed in a manner such that a digit of “100 minutes” is BCD expressed by using lower 4 bits in the 8-bit zero-data area ZERO. Thus, the absolute time of up to 999min59sec74frame can be expressed. A digit of “hour” is also expressed by using the lower 4 bits in the zero-data area. For example, identification information showing that a disc is a high density optical disc of large capacity is expressed by using the upper 4 bits in the zero-data area ZERO.
摘要:
A data record medium on which a digital signal has been recorded in which the digital signal is composed of main data and a sub code, the sub code having time information representing reproduction elapsed time, and the sub code being recorded in association with the main data, wherein information that represents the reproduction elapsed time of the sub code is represented with a binary coded decimal number and address information in synchronization with the time information of the main data is represented with a binary number, the address information being contained in the main data.
摘要:
A data recording medium having an address-representing portion formed of a predetermined number of bits for representing time information composed of minutes, seconds, and frames in a binary coded decimal notation, wherein addresses represented in a binary notation instead of the binary coded decimal notation are placed in the address-representing portion.
摘要:
When writing data to a normal-density CD-R, data linking blocks including two run-out blocks are appended to each packet of the data, and the data is interleaved with a maximum delay of 108 frames. On the other hand, when writing data to a double-density CD-R, data linking blocks including three run-out blocks are appended to each packet of the data, and the data is interleaved with a maximum delay of 189 frames. There are provided a data recorder, data recording method, data player, data playback method, and an optical disc with which data can properly be written to or read from an optical disc having an increased recording density, and which can support an optical disc having the current format.
摘要:
Data in the same signal format as a conventional CD is recorded to a first part of a record medium and compressed digital data in CD-ROM format in double density is recorded to a second part of the record medium. Addresses of a first session including the first part are represented in the notation of minute, second, and frame, and addresses of a second session including the second part are represented in binary notation. When the record position is moved from the first session to the second session, an end address of the first session is converted into an address of the second session. The start address is then designated and second addresses (for example, addresses represented in binary notation) are generated. When there is a non-record portion between the two sessions, an address value corresponding to the non-record portion is added to the start address. The resultant address is used as the new start address.
摘要:
Data in CD signal format is recorded to a first portion of an optical disc and compressed digital data in CD-ROM format in double density is recorded to a second portion of the disc, with a blank gap between the first and second portions. Addresses of the first portion are represented in a notation of minute, second, and frame and addresses of the second portion are represented in binary notation. When assigning addresses it is determined whether the first portion is accessed, and when the first portion is accessed the generation of normal addresses is started. When the determined result represents that the first portion is not accessed, the gap length is calculated and the start address of the second session is generated based upon the end address of the first portion and the known gap length. It is then determined whether the second portion has ended. Unless the second portion ends, the generation of the second addresses is continued. When the second portion ends, the generation of addresses is stopped.
摘要:
When a previous recording of data on a write-once optical disc is incomplete, the previous recording is processed to enable it to be read, and to enable additional data to be recordable on the write-once optical disc following the incomplete previous recording. The previous recording, when incomplete, lacks at least an end portion that would be included in the previous recording when complete. The previous recording is tested to determine whether it is incomplete. When the previous recording is detected as being incomplete, the position of the end of the previous recording is determined, a pseudo signal is generated for recording on the write-once optical disc, and the pseudo signal is written on the write-once optical disc, starting at the previously-determined position of the end of the previous recording. Writing the pseudo signal appends to the previous recording an additional recording that includes a replacement for the end portion lacking from the incomplete previous recording.
摘要:
A control apparatus for use with a recordable recording medium, such as a write once compact disc (CD-WO), in accordance with a SCSI-2 interface previously defined for a pre-recorded recording medium, such as a normal CD, automatically sets and updates attribute information needed for recording the CD-WO. When the CD-WO is blank or partially written, track information pages, in addition to a disc information page, are used to manage recording medium attribute information. The disc and track information pages are associated with corresponding disc and track changeability information pages.
摘要:
An information recording method based on a recording format in which when information is recorded on an information recording medium by a recording means, accompanying information concerning at least the information recording medium or recording information is repeatedly recorded a plurality of times together with the recording information comprises the steps of searching a recording failure position in an area in which the accompanying information is to be recorded when a recording of the accompanying information is failed, moving the recording means from a recording start position to the recording failure position, and recording the accompanying information from the recording failure position by the recording means based on the recording format. A write once optical disk recording method based on a recording format in which when information is recorded on a write once optical disk by a recording means, accompanying information concerning at least the write once optical disk or the recording information is repeatedly recorded a plurality of times together with the recording information comprises the steps of searching a recording failure position in an area in which the accompanying information is to be recorded when a recording of the accompanying information is failed, moving the recording means from a recording start position to the recording failure position and recording the accompanying information from the recording failure position by the recording means based on the recording format.
摘要:
A recording apparatus, a reproducing apparatus and a multi-session disc-shaped recording medium (CD-R disc) having a first session comprised only of audio tracks, a first disc code specifying the audio session and which is recorded in the lead-in area of the first session, and a second disc code which is recorded in the remaining sessions on the CD-R disc.