Recording medium, license management apparatus, and recording and playback apparatus
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsHideki Matsushima, Shunji Harada, Yasushi Uesaka, Teruto Hirota, Masayuki Kozuka, Masataka Nikaido
Life of this patent
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Abstract
A License Management Apparatus, see FIG. 2. Each Audio Object (AOB) is put in correspondence with a Migrate Permission Flag (MPF) which is set to ON to show that a migration procedure is permitted. When a Right Management Information (RMI) does not exist for an AOB the MPF is set to OFF to show that a migration procedure is not permitted.
Claims14
A recording medium for use with a plurality of apparatuses, the following being recorded thereon:
- an audio object, and
- a flag which is (a) set to off, when right management information for the audio object has been generated by any of the plurality of apparatuses, to show an instruction that a migration procedure is not permitted, and (b)set to on, when right management information is yet to be generated, to show an instruction that the migration procedure is permitted,
- wherein the migration procedure is one of the plurality of apparatuses retrieving the audio object from the recording medium and generating the right management information for the audio object.
A license management apparatus comprising:
- a connecting unit operable to connect to a recording medium on which an audio object and a flag in correspondence have been recorded,
- a first judgement unit operable to judge whether a migration procedure of the audio object is permitted, by referring to a set value of the flag,
- a storage unit, and
- a migration procedure unit operable to perform the migration procedure only when the migration procedure is permitted,
- wherein the migration procedure is retrieving the audio object from the recording medium, generating right management information about the audio object, and writing the audio object and the right management information in correspondence into the storage unit.
A recording and playback apparatus for use with a license management apparatus, and for performing reading from and writing to a recording medium on which (a) a first audio object for which corresponding right management information has been generated by the license management apparatus, and (b) a flag set to off, are recorded, the recording and playback apparatus comprising:
- a playback unit operable to reproduce the first audio object when a playback instruction is performed by the user,
- a signal receiving unit operable to receive an external audio signal when a recording instruction is performed by the user,
- an encoding unit operable to encode the audio signal to obtain a second audio object, and
- a writing unit operable to write the second audio object and the flag set to on into the recording medium,
- wherein the flag shows (c) by being set to on, that a migration procedure is permitted, and (d) by being set to off, that the migration procedure is not permitted, the migration procedure being the license management apparatus retrieving the second audio object and generating right management information about the second audio object.
A computer-readable recording medium on which a license management program is recorded, the program realizing on a computer which has a connecting unit operable to connect to a recording medium on which an audio object and a flag corresponding to the audio object are recorded, and a storage unit:
- a first judgement step for judging whether a migration procedure of the audio object is permitted, by referring to a set value of the flag, and
- a migration procedure step for performing the migration procedure only when the migration procedure is permitted,
- wherein the migration procedure is retrieving the audio object from the recording medium, generating right management information about the audio object, and writing the audio object and the right management information in correspondence into the storage unit.
A method of management for performing license management in a computer which has a connecting unit operable to connect to a recording medium on which an audio object and a flag corresponding to the audio object are recorded, and a storage unit, the method including:
- a first judgement step for judging whether a migration procedure of the audio object is permitted, by referring to a set value of the flag, and
- a migration procedure step for performing the migration procedure only when the migration procedure is permitted,
- wherein the migration procedure is retrieving the audio object from the recording medium, generating right management information about the audio object, and writing the audio object and the right management information in correspondence into the storage unit.
A recording medium for use with a plurality of apparatuses, the following being recorded thereon:
- stream data, and
- a flag which is (a) set to off, when right management information for the stream data has been generated by any of the plurality of apparatuses, to show an instruction that a migration procedure is not permitted, and (b)set to on, when right management information is yet to be generated, to show an instruction that the migration procedure is permitted,
- wherein the migration procedure is one of the plurality of apparatuses retrieving the stream from the recording medium and generating the right management information for the stream data.
A license management apparatus comprising:
- a connecting unit operable to connect to a recording medium on which stream and a flag in correspondence have been recorded,
- a first judgement unit operable to judge whether a migration procedure of the stream data is permitted, by referring to a set value of the flag,
- a storage unit, and
- a migration procedure unit operable to perform the migration procedure only when the migration procedure is permitted,
- wherein the migration procedure is retrieving the stream from the recording medium, generating right management information about the stream data, and writing the stream data and the right management information in correspondence into the storage unit.
A recording and playback apparatus for use with a license management apparatus, and for performing reading and writing of a recording medium on which (a) a first piece of stream data for which corresponding right management information has been generated by the license management apparatus, and (b) a flag set to off, have been recorded, the recording and playback apparatus comprising:
- a playback unit operable to reproduce the first piece of stream data when a playback instruction is performed by the user,
- a signal receiving unit operable to receive an external piece of stream data when a recording instruction is performed by the user,
- an encoding unit operable to encode the received external piece of stream data to obtain a second piece of stream data, and
- a writing unit operable to write the second piece of stream data and the flag set to on into the recording medium,
- wherein the flag shows (c) by being set to on, that a migration procedure is permitted, and (d) by being set to off, that the migration procedure is not permitted, the migration procedure being the license management apparatus retrieving the second piece of stream data and generating right management information about the second piece of stream data.
Dependencies are inferred from the claim text.