Reproducing device having index search function and access method therefor
First Claim
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1. A reproducing device for reproducing a recording medium on which plural programs and management information to manage the plural programs are recorded, comprising:
- reproducing means for reproducing the management information and the programs from the recording medium;
judgment means for judging on the basis of the management information reproduced by said reproducing means whether index information to subdivide a program is recorded on the recording medium;
index access instruction means for instructing an access to an index point on a desired program;
setting means for judging on tile basis of a judgement result of said judgment means whether any index information exists in a program serving as an index access target when the access of the index point is instructed by said index access instruction means, and setting an index point through a predetermined calculation processing when no index information exists in the program serving as the index access target; and
control means for performing a control operation to access to the set index point.
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Abstract
A reproducing device which is capable of performing an index search on both a recording medium on which an index point to subdivide a program is beforehand recorded together with programs, and a recording medium on which no index point is beforehand recorded.
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Citations
11 Claims
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1. A reproducing device for reproducing a recording medium on which plural programs and management information to manage the plural programs are recorded, comprising:
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reproducing means for reproducing the management information and the programs from the recording medium; judgment means for judging on the basis of the management information reproduced by said reproducing means whether index information to subdivide a program is recorded on the recording medium; index access instruction means for instructing an access to an index point on a desired program; setting means for judging on tile basis of a judgement result of said judgment means whether any index information exists in a program serving as an index access target when the access of the index point is instructed by said index access instruction means, and setting an index point through a predetermined calculation processing when no index information exists in the program serving as the index access target; and control means for performing a control operation to access to the set index point. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A reproducing device for reproducing a recording medium on which plural programs and management information to manage the plural programs are recorded, comprising:
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a reproducer for reproducing the management information and the programs from the recording medium; a detector for detecting, on the basis of the management information reproduced by said reproducer, whether index information to subdivide the programs are recorded on the recording medium; an index access operator for instructing an access to an index point on a desired program; a calculator for judging on the basis of a result from said detector whether index information exists in a program serving as an index access target when said index access operator is instructed, and setting an index point through a predetermined calculation processing when no index information exists in the program serving as the index access target; and a controller for performing a control so as to access to the set index point.
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9. An access method of accessing an index point to subdivide a recording medium on which plural programs and management information to manage the plural programs are recorded, comprising the steps of:
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(1) judging whether an access to an index point is instructed; (2) judging on the basis of the management information whether a program serving as an access target is provided with index information to subdivide the program when the access to the index point is instructed in said step (1); (3) setting an index point on the basis of a predetermined calculation when no index information is judged to be recorded in said step (2); and (4) accessing to the index point set in said step (3). - View Dependent Claims (10, 11)
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Specification