Recorded medium, reproducing apparatus, recording apparatus, and reproducing method and recording method
AssigneeSony Corporation
InventorSeiji Ohbi
Life of this patent
Estimating the term…
Abstract
By packetizing main data to be recorded in a program area while providing each of the packets with a header (packet property) for managing the data length of individual packets, and further providing a management area (packet index) for batched management of a pack in managing the pack of a plurality of aggregated packets, reproduction of the header (packet property) included in the individual packs at the time of access and reproduction of the management area (packet index) on the inner circle in advance enable access to the individual packets included in the whole pack (that is, the aggregated packets).
Claims19
A recording medium comprising:
- a program area in which a plurality of aggregated unit packets are discretely recorded as a pack, each packet comprising of a header section having data length of the entire packet managed therein and a main data section;
- a first management area for managing the recording address of the packets in the program area;
- and
- a second management area in which the total number of packets included in the pack of the plurality of aggregated packets and the total length of data included in the pack of the plurality of aggregated packets are managed.
A reproducing device for reproducing data from a recording medium including a program area in which a plurality of aggregated unit packets are discretely recorded as a pack, each packet comprising of a header section having data length of the entire packet managed therein and a main data section, a first management area for managing the recording address of the packets in the program area, and a second management area in which the total number of packets included in the pack of the plurality of aggregated packets and the total length of data included in the packet of the plurality of aggregated packets are managed, the reproducing device comprising:
- reproducing means for reproducing the first management are, the second management area and the program area;
- storage means for storing management information reproduced from the first management area and the second management area by the reproducing means;
- and
- control means for controlling transfer of the reproducing means on the basis of the management information stored in the storage means when access to an arbitrary pack of the plurality of aggregated packets is instructed.
A recording device for recording digital video signals to a recording medium including a program area in which a plurality of aggregated unit packets are discretely recorded, each packet consisting of a header section having management information recorded therein and a main data section, and a management area in which first management information comprising of the total number of packets included in a pack of the plurality of aggregated packets and the total length of data included in the pack of the plurality of aggregated packets or second management information comprising of the data length of each of the packets is selectively managed, the recording device comprising:
- blocking means for blocking inputted digital video signals by each predetermined length;
- discrimination means for discriminating the quality of the blocked digital video signals;
- first management information generation means for generating the first management information in the case where it is discriminated by the discrimination means that the digital video signals have low quality;
- and
- recording means for recording the first management information generated by the first management information generation means to the management area.
A recording device for recording digital audio signals to a recording medium including a program area in which a plurality of aggregated unit packets are discretely recorded, each packet comprising of a head section having management information recorded therein and a main data section, and a management area in which first management information comprising of the total number of packets included in a pack of the plurality of aggregated packets and the total length of data included in the pack of the plurality of aggregated packets or second management information comprising of the data length of each of the packets is selectively managed, the recording device comprising:
- blocking means for blocking inputted digital audio signals by each predetermined length;
- memory means for storing the blocked digital audio signals;
- discrimination means for discriminating the quality of data stored in the memory means;
- first management information generation means for generating the first management information in the case where it is discriminated by the discrimination means that a predetermined quantity or more of the blocked digital audio signals are stored in the memory means;
- and
- recording means for recording the first management information generated by the first management information generation means to the management area.
A reproducing method for reproducing data from a recording medium including a program area in which a plurality of aggregated unit packets are discretely recorded as a pack, each packet comprising of a header section having data length of the entire packet managed therein and a main data section, a first management area for managing the recording address of the packets in the program area, and a second recording area in which the total number of packets included in the pack of the plurality of aggregated packets and the total length of data included in the pack of the plurality of aggregated packets are managed, the reproducing method comprising:
- a step of reproducing the first management area, the second management area and the program area;
- a step of storing management information reproduced from the first management area and the second management area to a memory;
- a step of discriminating the presence/absence of an instruction to access an arbitrary pack of the plurality of aggregated packets;
- and
- a step of accessing an arbitrary packet designated by the access instruction on the basis of the management information stored in the memory.
A recording method for recording digital video signals to a recording medium including a program area in which a plurality of aggregated unit packets are discretely recorded as a pack, each packet comprising of a header section having data length of the entire packet managed therein and a main data section, and a management area in which first management information for managing the total number of packets included in a pack of the plurality of aggregated packets and the total length of data included in the pack of the plurality of aggregated packets or second management information for managing the data length of each of the packets is selectively managed, the recording method comprising:
- a step of discriminating the quality of blocked digital video signals;
- a step of generating the first management information in the case where it is discriminated at the step of discriminating that the blocked digital video signals have low quality;
- and
- a step of recording the generated first management information to the management area.
A recording method for recording digital audio signals to a recording medium including a program area in which a plurality of aggregated unit packets are discretely recorded as a pack, each packet comprising of a header section having data length of the entire packet managed therein and a main data section, and a management area in which first management information for managing the total number of packets included in a pack of the plurality of aggregated packets and the total length of data included in the pack of the plurality of aggregated packets or second management information for managing the data length of each of the packets is selectively managed, the recording method comprising:
- a step of blocking inputted digital audio signals;
- a step of storing the blocked digital audio signals to a memory;
- a step of discriminating whether the quantity of digital audio signals stored in the memory is equal to or greater than a predetermined quantity;
- a step of generating the first management information in the case where it is discriminated at the step of discriminating that the quantity of blocked digital audio signals stored in the memory is equal to or greater than a predetermined quantity;
- and a step of recording the generated first management information to the management area.
Dependencies are inferred from the claim text.