RU2010140073A - RECORDING MEDIA, PLAYBACK AND INTEGRATED DIAGRAM - Google Patents

Claims (8)

1. A playback device for reproducing video images from a recording medium containing recorded thereon: main view stream used to play monoscopic video; and additional view stream used to reproduce stereoscopic video in combination with the main view stream, wherein the additional view stream is encoded with reference to the main view stream, the main view stream is divided into many data blocks of the main view, the stream of the additional view is divided into many data blocks of the additional view, data blocks of the main view and data blocks of the additional view are sequentially written in an alternating arrangement and make up a lot of extent blocks, each of the extent blocks is addressed during playback of the stereoscopic video as one extent, the initial data block in each of the extent blocks is an additional view data block, moreover, the playback device contains: a reading unit that performs the function of reading extent blocks from the recording medium; a switching unit that performs the function of allocating the main view stream and the additional view stream from the extent blocks read by the read unit; the first read buffer, which performs the function of storing the main view stream allocated by the switching unit therein; the second read buffer, which performs the function of storing in it a stream of an additional view highlighted by the switching unit; and a decoding unit that performs the function of reading and decoding the main view stream from the first read buffer and reading and decoding the additional view stream from the second read buffer, and wherein the time (t) required by the decoding unit to decode all data blocks in one extents block is greater than or equal to the sum (t ₁ + t ₂ + t ₃ ) of the time (t ₁ ) required by the read block to read the data blocks except the initial a data block, in the extents block, the time (t ₂ ) needed by the read block to start reading the initial part of the next extents block from the moment the end of the extents block is read, and the time (t ₃ ) needed by the read block to read the initial data block in next block extents. 2. The playback device according to claim 1, in which during stereoscopic playback, the first read buffer and the second read buffer do not empty from the point in time when the read unit finishes reading the end of the extent block until the read block completely reads the initial data block in the next extent block. 3. A playback system from a recording medium comprising a recording medium and a reproducing apparatus for reproducing from a recording medium, wherein the recording medium contains: main view stream used to play monoscopic video; and additional view stream used to reproduce stereoscopic video in combination with the main view stream, wherein the additional view stream is encoded with reference to the main view stream, the main view stream is divided into many data blocks of the main view, the stream of the additional view is divided into many data blocks of the additional view, data blocks of the main view and data blocks of the additional view are sequentially written in an alternating arrangement and make up a lot of extent blocks, each of the extent blocks is addressed during playback of the stereoscopic video as one extent, the initial data block in each of the extent blocks is an additional view data block, the lower limit of the size of the nth extents block S _EXTSS [n], where n is an integer greater than or equal to 1, is represented by the right side of the following expression:

, where the nth extent block is read at a speed R _ud from the recording medium into the read buffer, the nth _extent block is transmitted at an average speed R _EXTSS [n] from the read buffer to the decoder, the time T _jump [n] is required to go from n- th extents block to the (n + 1) th extents block, and the difference T _DIFF [n] is obtained by subtracting the time required to read all data blocks in the n-th extents block from the time required to read all data blocks in the (n + 1) th extents block, moreover, the playback device contains: a reading unit that performs the function of reading extent blocks from the recording medium; a switching unit that performs the function of allocating the main view stream and the additional view stream from the extent blocks read by the read unit; the first read buffer, which performs the function of storing the main view stream allocated by the switching unit therein; the second read buffer, which performs the function of storing in it a stream of an additional view highlighted by the switching unit; and a decoding unit that performs the function of reading and decoding the main view stream from the first read buffer, and reading and decoding the additional view stream from the second read buffer, and the time (t) required by the decoding unit to decode all data blocks in one extents block is greater than or equal to the sum (t ₁ + t ₂ + t ₃ ) of the time (t ₁ ) required by the read block to read the data blocks except the initial a data block, in the extents block, the time (t ₂ ) needed by the read block to start reading the initial part of the next extents block from the moment the end of the extents block is read, and the time (t ₃ ) needed by the read block to read the initial data block in next block extents. 4. The recording medium containing recorded on it: main view stream used to play monoscopic video; and additional view stream used to reproduce stereoscopic video in combination with the main view stream, wherein the additional view stream is encoded with reference to the main view stream, the main view stream is divided into many data blocks of the main view, the stream of the additional view is divided into many data blocks of the additional view, data blocks of the main view and data blocks of the additional view are sequentially written in an alternating arrangement and make up a lot of extent blocks, each of the extent blocks is addressed during playback of the stereoscopic video as one extent, the initial data block in each of the extent blocks is an additional view data block, moreover, when there is a transition from one block of extents to the next block during playback of stereoscopic video, each of the blocks of extents has such a lower limit size that the buffer contained in the playback device is empty from the moment the transition begins to the moment the initial a data block in the next extents block does not occur. 5. The recording medium according to claim 4, in which the lower limit of the size of the nth extent block, S _EXTSS [n], where n is an integer greater than or equal to 1, is represented by the right side of the following expression:

, where the nth extent block is read at a speed R _ud from the recording medium into the read buffer, the nth _extent block is transmitted at an average speed R _EXTSS [n] from the read buffer to the decoder, the time T _jump [n] is required to go from n- th extents block to the (n + 1) th extents block, and the difference T _DIFF [n] is obtained by subtracting the time required to read all data blocks in the n-th extents block from the time required to read all data blocks in the (n + 1) th extents block. 6. The recording medium according to claim 4, further comprising recorded on it: information about the first playback segment, which defines the first part of the playback route of the main view stream; and information about the second playback segment, which defines the second part after the first part on the playback path of the main view stream, while the information about the second playback segment shows that the first part and the second part need a seamless connection between each other, moreover, when there is a transition from one extents block to the next block during stereoscopic video playback, each of the extents blocks from the 2nd extents block in the first part to the second from the end extents block in the second part has such a lower limit size that devastation the buffer contained in the playback device, from the moment when the transition begins, until the moment when the initial data block is read in the next extents block, does not occur. 7. The recording medium according to claim 4, further comprising recorded on it: the first file that accesses the main view stream during playback of monoscopic video; a second file that accesses the main view stream during stereoscopic video playback; and a third file that refers to each of the extent blocks as a single extent during stereoscopic video playback. 8. A semiconductor integrated circuit for performing processing of audio and video in relation to data received from a recording medium containing recorded on it: main view stream used to play monoscopic video; and additional view stream used to reproduce stereoscopic video in combination with the main view stream, wherein the additional view stream is encoded with reference to the main view stream, the main view stream is divided into many data blocks of the main view, the stream of the additional view is divided into many data blocks of the additional view, data blocks of the main view and data blocks of the additional view are sequentially written in an alternating arrangement and make up a lot of extent blocks, each of the extent blocks is addressed during playback of the stereoscopic video as one extent, both the main view data blocks and the additional view data blocks contain visual data, at least one of the main view data blocks and the additional view data blocks contain audio data, the initial data block in each of the extent blocks is an additional view data block, moreover, the semiconductor integrated circuit contains: a main control unit that performs the function of controlling a semiconductor integrated circuit; a stream processing unit that performs the function of receiving extents blocks from an external device read from the recording medium by an external device, temporarily storing the received extents blocks in one of the memory blocks, internal and external with respect to the semiconductor integrated circuit, and, then, demultiplexing the obtained extents blocks to visual data and audio data; a signal processing unit that performs the function of decoding audio data and visual data; and an audio-visual (AV) data output unit that performs the function of outputting decoded audio and video data, wherein flow processing unit contains a switching unit that performs the function of switching the area, to save the received blocks of extents, between the first region and the second region, which are contained in the memory block, the main control unit controlling the switching unit in order to store in the first and second areas the data belonging to the data blocks, respectively, of the main view and the additional view contained in the obtained extent blocks, and the time (t) required by the signal processing unit to decode all data blocks in one extent block is greater than or equal to the sum (t ₁ + t ₂ + t ₃ ) of the time (t ₁ ) required by the external device to read the data blocks, except the initial data block, in the extents block, the time (t ₂ ) required by the external device to start reading the initial part of the next extents block from the moment of reading the end of the extents block, and the time (t ₃ ) required by the external device to read the initial data block in the next block ext ntov.