Panasonic Corporation

Panasonic Intellectual Property Corporation of America

Panasonic Intellectual Property Management Co., Ltd.

Kazuhiro Mochinaga

Hiroshi Yahata

Tomoki Ogawa

Tomoyuki Okada

Taiji Sasaki

Yasushi Uesaka

Joseph McCrossan

Masaya Yamamoto

Tokuo Nakatani

Toshiyuki Fukushima

Nobuyuki Enoki

Wataru Ikeda

Tomohiro Matsumoto

Joseph Mccrossan

A content recording apparatus includes an obtaining unit which obtains a content having a variable-length packet structure, an encrypter which generates encrypted data by encrypting the content, and a recorder which records the encrypted data in a block unit having a fixed length in a recording medium. The encrypted data includes an invalidated region unnecessary for reproduction of the content. The recorder records a size of the invalidated region in the recording medium.

Content recording apparatus, content editing apparatus, content reproduction apparatus, content recording method, content editing method, and content reproduction method

A playback method of reading out and playing streams from a recording medium is provided in which are recorded a stream file, a playlist file, first and second combination information, elementary streams that can be played at the same time with the first luminance video, and elementary streams that can be played at the same time with the second luminance video. The playback method includes in a case of playing the first luminance video, reading out any one of the elementary streams listed in the first combination information of the playlist file, and playing at the same time with the first luminance video, and in a case of playing the second luminance video, reading out any one of the elementary streams listed in the second combination information of the playlist file, and playing at the same time with the second luminance video.

Recording medium, playback method, and playback device

A playback method of reading out and playing streams from a recording medium is provided. A stream file. including a first luminance video and a second luminance video, a playlist file, first and second combination information, elementary streams that can be played together with the first luminance video, and elementary streams that can be played together with the second luminance video are recorded in the recording medium. The playback method includes, when playing the first luminance video, reading out any one of the elementary streams listed in the first combination information of the playlist file, and playing at the same time with the first luminance video, and when playing the second luminance video, reading out any one of the elementary streams listed in the second combination information of the playlist file, and playing at the same time with the second luminance video.

A recording medium is provided in which are recorded a stream file, including a first luminance video expressed by luminance of a first dynamic range, and a second luminance video expressed by luminance of a second dynamic range that is broader than the first dynamic range, and a playlist file for controlling playback of the stream file. The recording medium includes first and second combination information, representing combinations of first and second audio streams that each can be played at the same time in a same playback section with the first luminance video and the second luminance video, being described in the playlist file. The recording medium also includes the first audio streams that can be played at the same time with the first luminance video in this playback section being all listed in the first combination information.

A playback method of reading out and playing streams from a recording medium is provided, in which are recorded a stream file including a first luminance video expressed by luminance of a first dynamic range, and a second luminance video expressed by luminance of a second dynamic range that is broader than the first dynamic range, and a playlist file for controlling playback of the stream file. The playback method includes, in a case of playing the first luminance video, reading out the first audio streams listed in the first combination information of the playlist file, and playing at the same time with the first luminance video, and in a case of playing the second luminance video, reading out the second audio streams listed in the second combination information of the playlist file, and playing at the same time with the second luminance video.

A playback device plays video streams recorded in a recording medium, in which are one or more video streams including at least one of an HDR stream whose dynamic range of luminance of video corresponds to a high dynamic range (HDR), and an SDR stream whose dynamic range of luminance of video corresponds to a standard dynamic range (SDR) narrower than HDR, and identification information indicating whether the HDR stream is included in the one or more video streams. A playback method of the playback device includes: reading the identification information from the recording medium; acquiring playback capability information indicating whether the playback device can play the HDR stream, and display capability information indicating whether a connected display device can display the HDR video; and deciding on a video stream from the one or more video streams, according to the identification information, the playback capability information, and the display capability information.

Playback method, playback device, and non-transitory computer-readable recording medium storing program

A recording medium is provided in which are recorded a stream file including a first luminance video expressed by luminance of a first dynamic range, a second luminance video expressed by luminance of a second dynamic range that is broader than the first dynamic range, and a playlist file for controlling playback of the stream file. The first and second combination information, representing combinations of elementary streams that can be played at the same time, is described in the playlist file. Elementary streams that can be played at the same time with the first luminance video are listed in the first combination information. Elementary streams that can be played at the same time with the second luminance video are listed in the second combination information. The number of elementary streams of a predetermined type listed in the first combination information and the second combination information are equal.

A playback method is provided for reading out and playing streams from a recording medium. Recorded in the recording medium are a stream file including a first luminance video expressed by luminance of a first dynamic range, and a second luminance video expressed by luminance of a second dynamic range that is broader than the first dynamic range; a playlist file for controlling playback of the stream file; and a number of elementary streams. The playback method includes when playing the first luminance video, reading out any one of the elementary streams listed in the first combination information of the playlist file, and playing at the same time with the first luminance video; and when playing the second luminance video, reading out any one of the elementary streams listed in the second combination information of the playlist file, and playing at the same time with the second luminance video.

To provide a transmission device that enables playback with respect to the same program in accordance with a viewer's viewing environment. The transmission device stores therein 3D access information and 2D access information respectively relating to access to a 3D stream and a 2D stream that are simulcast, and generates and transmits a data stream including the 3D access information and the 2D access information.

Transmission device, reception and playback device, transmission method, and reception and playback method

To provide a reception and playback device capable of playing back a program in viewer's desired display mode. The reception and playback device receives, with respect to a program that is currently played back in a first display mode, a switching instruction to switch from the first display mode to a second display mode, receives switching permission information indicating whether switching of a playback target stream of the program is permissible from a first stream to a second stream respectively corresponding to the first display mode and the second display mode, when receiving the switching instruction, judges whether switching of the display mode is permissible from the first display mode to the second display mode based on the switching permission information, when judging affirmatively, switches from the first stream to the second stream to perform playback using the second stream, and when judging negatively, performs playback using the first stream.

Reception/reproduction device, transmission device, reception/reproduction method and transmission method

A recording medium has a main-view stream, a sub-view stream, and an extended stream recorded thereon. The main-view stream contains a main-view video stream constituting main views of stereoscopic video images, and is divided into a plurality of main-view extents arranged on the recording medium. The sub-view stream contains a sub-view video stream constituting sub-views of the stereoscopic video images, and is divided into a plurality of sub-view extents arranged on the recording medium. The extended stream contains extended data to be used in combination with the main-view stream, and is divided into a plurality of extended extents arranged on the recording medium. Between an adjacent pair of the plurality of extended extents, at least two each of the plurality of the main-view extents and the plurality of the sub-view extents are placed in a continuous, interleaved arrangement.

Recording medium, reproduction device, and recording device

A rewritable recording medium on which Index.bdmv is recorded in the BDMV directory. The Index.bdmv includes editability_flag and extended_editability_flag. When the editability_flag is set ON, it indicates that the recording medium is treated as an editable medium by a legacy device which does not support recording and editing of stereoscopic video. When the editability_flag is set OFF, it indicates that the recording medium is treated as a non-editable medium by the legacy device. When the extended_editability_flag is set ON, it indicates that the recording medium is treated as an editable medium by a non-legacy device even when the editability flag is set OFF, where the non-legacy device supports recording and editing of stereoscopic video.

Recording medium, playback device, recording device, playback method and recording method for editing recorded content while maintaining compatibility with old format

A playback device for playing back a playlist by determining, as a current sub-playitem, a sub-playitem that is optimum for the current sub-playitem each time a current playitem changes. The playback device continues a playback of a playitem when a clip file being referred to by the current sub-playitem has been downloaded and is in an Enable state in the local storage; and stops, by issuing a DataStarved event, the playback of the playitem when the clip file being referred to by the current sub-playitem is in a missing state or an invalid state in a recording medium.

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Osaka, Japan

Kazuhiro Mochinaga