Digital information recording apparatus, reproducing apparatus and transmitting apparatus

Abstract

A digital information recording apparatus includes a recording circuit for recording information of a retention period included in the digital information and indicating a period for permitting the digital information to be held in the recording medium, starting with a time at which the digital information is recorded on the recording medium; and information of a playback permission period included in the digital information and indicating a period for permitting the digital information to be played back starting with a time at which the information is reproduced initially following recording of the digital information on the recording medium, permitting temporary recording or copying for the information permitted for “copy never” or “copy one generation.”

1 . A reproducing system, comprising:
 a receiver configured to receive an audio/video information encrypted according to a predetermined encryption method and control information related to the audio/video information, the control information for controlling reproduction of the audio/video information after distribution and at a location different from a distribution location;   a memory configured to at least temporarily store at least a portion of the audio/video information and at least a portion of the control information;   a detector configured to detect at least a portion of the control information, including data indicative of a first period for enabling a reproduction of the audio/video information and disabling reproduction after expiration of a prescribed time and a second period, that begins at a start of an initial reproduction of the audio/video information within the first period and is shorter than the first period, for enabling a reproduction of the audio/video information and disabling reproduction after expiration of a prescribed time following the start of the initial reproduction of the audio/video information;   a decryptor configured to decrypt the audio/video information encrypted according to the predetermined encryption method;   a reproducer configured to reproduce at least a portion of the audio/video information from the memory consistent with restrictions associated with the first period and the second period through decryption by the decryptor; and   a controller configured to control at least the reproducer,   wherein, in a case where the controller confirms that an elapsed time from a start of the first period is within the first period and an elapsed time from a start of an initial reproduction of the audio/video information is within the second period, the controller is configured to, based on at least a portion of the control information detected by the detector, allow the reproducer to reproduce the audio/video information,   wherein, in a case where the controller confirms that an elapsed time from a start of the first period is out of the first period even if the controller is configured to control the reproducer to execute a start of an initial reproduction of the audio/video information at a timing when a remaining time of the first period is less than the second period and an elapsed time from the start of the initial reproduction of the audio/video information is within the second period, the controller is configured to, based on at least a portion of the control information detected by the detector, not allow the reproducer to reproduce the audio/video information.