摘要:
An information recording and/or reproducing method for supervising the information, such as an input source, in a stream recorded on a recording medium. If, in a reproduction processing of reproducing an AV stream from the recording medium, the source_security_info, which is the copy control information recorded on the recording medium, is read out, the AV stream is read out, and analog video, for example, is output (step 203), it is verified, from the information contained in the source_security_info, whether or not the input source is DTCP-concordant. If the input source is DTCP-concordant, reproduction restricting processing for a video output, conforming to the DTCP rule, is executed to issue the video output.
摘要:
With a reproduction-only disc having a large recording capacity, an interactive function having a higher degree of freedom than the related art can be easily accomplished. A virtual player model corresponding to a function of a player is created and described in Java. BDBasicPlayer 210 detects a user input and the status change of the player and generates an event. An object 211 that implements a listener interface registers an event listener corresponding to an event that the object 211 is caused to receive to BDBasicPlayer 210 before the event takes place. When the event becomes unnecessary, it is unregistered. BDBasicPlayer 210 transmits the event to the object 211 in which the event listener has been registered. The object 211 executes a method corresponding to the received event. The relationships between events and methods can be flexibly set. Thus, a complicated interactive function can be easily accomplished.
摘要:
CPI_type is stated in the PlayList( ). There are EP_type and EP_map type in CPI_type. If the position of an I-picture can be known by analysis, EP_map type is used, whereas, if the position of an I-picture cannot be known by analysis, EP_map type is used. By so doing, AV stream data recorded subject to analysis of the I-picture and AV stream data recorded without analyzing the I-picture position can be supervised in common.
摘要:
Congested rewriting in the same area is to be evaded to suppress the tendency towards occurrence of defective areas. When a stream 1 has been recorded, the last written address, representing the last written position, is stored. When recording a stream 2 next, recording is started directly following the position indicated by the last written address for the stream 1. The last written address, corresponding to the last address of the recording position, is stored. If the stream 2 is erased for recording a stream 3, recording is started not at a position directly following the last written address of the stream 1, but from a position directly following the last written address of the stream 2. When the stream 3 has reached the end of a recording area, the next following data is recorded as from a position directly following the stream 1.
摘要:
An apparatus and a method for reproducing a recording medium which requires input of a code number only once when the code number is required to be input to both a directory and a PlayList for reproduction. A plurality of directories, such as DVR, DVR1, DVRn and the like, are formed on a disk. One directory DVR has a flag DVR_protect_flag (first control information) set therein for controlling reproduction of information belonging in the directory. Also, a file associated with the PlayList, which is one piece of information in the directory DVR, has a playback_control_flag (second control information) set therein for controlling reproduction thereof. In a case where the DVR_protect_flag is 1, reproduction is allowed only when a correct code number is input. In a case where the DVR_protect_flag and the playback_control_flag are both 1, input of the code number for the playback_control_flag is omitted when the correct code number has already been input for the DVR_protect_flag.
摘要:
Control data subsequent to an extension start code is stored in an encoding apparatus when transmitted after each header data of a video sequence layer, a GOP layer, a picture layer and a slice layer. And in transmission of the next header data, the content of the control data subsequent to the extension start code in the header data to be transmitted is compared with the content of the preceding header data of the same layer stored in the encoding apparatus. And if the result of such comparison signifies that the compared data are mutually the same, neither the extension start code nor the subsequent control data is transmitted. At the reception of each header data of the video sequence layer, the GOP layer, the picture layer and the slice layer, the control data decoded subsequently to the extension start code is stored in the decoding apparatus. And when the extension start code is not existent in the next header data to be decoded, the preceding header data of the same layer stored in the decoding apparatus is duplicated and used as the control data of the layer being currently encoded.
摘要:
Control data subsequent to an extension start code is stored in an encoding apparatus when transmitted after each header data of a video sequence layer, a GOP layer, a picture layer and a slice layer. And in transmission of the next header data, the content of the control data subsequent to the extension start code in the header data to be transmitted is compared with the content of the preceding header data of the same layer stored in the encoding apparatus. And if the result of such comparison signifies that the compared data are mutually the same, neither the extension start code nor the subsequent control data is transmitted. At the reception of each header data of the video sequence layer, the GOP layer, the picture layer and the slice layer, the control data decoded subsequently to the extension start code is stored in the decoding apparatus. And when the extension start code is not existent in the next header data to be decoded, the preceding header data of the same layer stored in the decoding apparatus is duplicated and used as the control data of the layer being currently encoded.
摘要:
A data-recording/reproducing apparatus and method, that determine a reproduction position with high degree of reliability for data recorded on an information-recording medium even after the data is edited. From a process to edit an AV stream file, a DV data recording/reproducing apparatus splits a DVF-sequence into sequences including consecutive frames. When data is deleted in sector units in the edit process, pieces of data included in deleted frames are left at the beginning and end of each of the sequences. The DV data recording/reproducing apparatus records data representing the length of the data left at the head and the end of the sequences, data representing a frame number assigned to a frame located at the head of the sequences, and data representing the number of frames included in the sequences, on a disc used as the information-recording medium, for example an optical disc.
摘要:
The invention provides a recording/reproduction apparatus and method as well as a recording medium wherein, when nondestructive editing is executed for an AV signal, the AV signal can be reproduced seamlessly without suffering from any interruption. Information representative of states (an A type, a C type, a D type, or an E type) of an IN point and an OUT point on a Clip, designated by a Playitem, of a Playlist in which at least more than one Playitems are arranged in the order of reproduction is described in a block Playitem( ).
摘要:
From input moving picture data, a thumbnail picture representing the moving picture data is generated as first thumbnail data. Form the moving picture data, a thumbnail picture of a picture extracted as being a characteristic picture, or a thumbnail picture of a picture specified by a user, is generated as second thumbnail data, and the first and second thumbnail data are recorded as respective independent groups on the recording medium. So, the user is allowed to select recorded data readily using the recorded picture data.