摘要:
A real-time reproduction determination unit determines whether or not AV data recorded in recording areas on an optical disc can be reproduced in a real-time manner. If the AV data recorded on the optical disc cannot be reproduced in a real-time manner, a compile simulation unit and a compile execution unit respectively select extents from the AV data recorded on the optical disc and relocate the extents to a relocation area.
摘要:
A minimum buffer data amount and a minimum reproduction delay time are found from a line approximation graphic form approximating a media read line and used as a basis for determining whether or not data can be reproduced in a real-time manner from a recording medium at a requested reproduction rate. The media read line is a line expressing the change in cumulative amount of data read out from the recording medium. The minimum buffer data amount is the minimum of the amount of data stored in a buffer as data required in reproduction of the data in a real-time manner at the requested reproduction rate. The minimum reproduction delay time is the minimum of a reproduction delay time from the start of an operation to read out the data from the recording medium to the start of an operation to reproduce the data.
摘要:
In a recording control apparatus and method, in recording areas on an optical disk, consecutive empty areas for an ALLOCATION_UNIT are reserved as reserved areas. Multiplexed data in units of packets which can be recorded in the reserved areas is recorded in the reserved areas. A remaining part of the reserved areas in which the multiplexed data in units of packets is not recorded is freed as empty areas. Subsequently, multiplexed data is similarly recorded.
摘要:
A conversion apparatus and method is disclosed by which a file including data multiplexed therein can be edited or handled readily while maintaining the compatibility. A standard/independent conversion section converts a file of a standard AV multiplex format wherein video data and audio data are placed in a multiplexed state in a body into a file of an AV independent format wherein video data or audio data are placed collectively in a body. Meanwhile, an independent/standard conversion section converts a file of the AV independent formation into a file of the standard AV multiplex format.
摘要:
The rewriting counts in respective areas of a rewritable medium are uniformized. If empty areas are present on the rewritable medium rearward of a recording start position in terms of addresses, then data is recorded in those empty areas. When no empty areas become available rearward of the recording start position, data is then recorded in empty areas forward of the recording start position. The numbers of times that data is recorded in recording areas of the recording medium are thus averaged.
摘要:
A conversion apparatus and method is disclosed by which a file including data multiplexed therein can be edited or handled readily while maintaining the compatibility. A standard/independent conversion section converts a file of a standard AV multiplex format wherein video data and audio data are placed in a multiplexed state in a body into a file of an AV independent format wherein video data or audio data are placed collectively in a body. Meanwhile, an independent/standard conversion section converts a file of the AV independent formation into a file of the standard AV multiplex format.
摘要:
An information processing apparatus includes a file-time-code (FTC) sort unit and a logical block number (LBN) scheduling unit. The FTC unit sorts data items recorded on an optical disk based on the playback times of the pieces of data. The LBN scheduling unit sorts the data items recorded by the FTC sort unit based on the recording positions of the data items on the optical disk. The LBN scheduling unit also uses the sorting result as the result of scheduling the order of reading the data items from the optical disk.
摘要:
In a recording control apparatus and method, in recording areas on an optical disk, consecutive empty areas for an ALLOCATION_UNIT are reserved as reserved areas. Multiplexed data in units of packets which can be recorded in the reserved areas is recorded in the reserved areas. A remaining part of the reserved areas in which the multiplexed data in units of packets is not recorded is freed as empty areas. Subsequently, multiplexed data is similarly recorded.
摘要:
A method and apparatus for generating and editing audio and/or video data using thumbnail representations of the data. Thumbnail representations are generated in accordance with clips randomly recorded on a disc, or other storage medium, and edit points are designated for the clips. When thumbnail representations are displayed, the disc is rotated at constant angular velocity (CAV). Video data of the thumbnail representations are read from the disc. When a desired thumbnail representation is selected and designated, the disc drive system is switched from CAV drive mode to constant linear velocity (CLV) drive mode. Video are reproduced from the position of the selected thumbnail representations. Since the thumbnail representations are read in the CAV drive mode that is suitable for randomly accessing the disc, the thumbnail representations can be displayed at high speed.
摘要:
A data accessing and reproducing apparatus and method that permits a user to selected desired video clips and perform editing on the clips such that the time needed to display a thumbnail representation is minimized. In an edit mode, thumbnail pictures are arranged and displayed in the order of which edit results are reproduced. These thumbnails may be, for example, a lower resolution, proxy representation of the audio or video data. When data of thumbnail pictures are read from a disc, the data are read in the order of which they have been recorded. The order of which thumbnail pictures are displayed on the screen is different from the order of which they are arranged on the screen, and thus, the seek time for the disc becomes the shortest. Thus, the thumbnail pictures can be displayed at high speed.