Abstract: Several methods and systems for masking multimedia data are disclosed. In an embodiment, a method for masking includes performing a prediction for at least one multimedia data block based on a prediction mode of a plurality of prediction modes. The at least one multimedia data block is associated with a region of interest (ROI). A residual multimedia data associated with the at least one multimedia data block is generated based on the prediction. A quantization of the residual multimedia data is performed based on a quantization parameter (QP) value. The QP value is variable such that varying the QP value controls a degree of masking of the ROI.

Abstract: A system and method is provided for synchronizing media content in a media distribution network using timestamps. The system includes a decoder configured to parse a plurality of data packets of a media stream to determine a timestamp value for each video frame in the media stream; and a media content synchronizer. The media content synchronizer generates a media content timeline based on the determined timestamp value of each of video frame, generates the media content timeline based on a cadence having monotonic increasing count, determines whether each video frame of the media stream is a next frame in a video sequence of the media stream based on the timestamp value for the respective video frame, and repeats a previous frame in the video sequence to generate the media content timeline when a current frame in the video sequence was dropped based on the determined timestamp value.

Abstract: There is provided an image processing apparatus connected to a camera head capable of imaging a left eye image and a right eye image having parallax on one screen based on light at a target site incident on an optical instrument, the apparatus including: an image processor that performs signal processing of the left eye image and the right eye image imaged by the camera head; and an output controller that outputs the left eye image and the right eye image on which the signal processing is performed to a monitor via each of a first channel and a second channel, in which the output controller outputs one of the left eye image and the right eye image on which the signal processing is performed to the monitor via each of the first channel and the second channel in accordance with switching from a 3D mode to a 2D mode.

Abstract: Proposed is a method for providing additional information to a mobile communication terminal by means of visible light communication in an information display device having an LED backlight unit. For this purpose, the method of the present invention comprises the steps of: receiving, from a mobile communication terminal, a request for additional information on an object in a content image when a content image is being displayed on a screen of an information display device; determining whether or not there exists additional information corresponding to the request; and controlling, if said additional information does exist, the light emission of the LED backlight unit so as to transmit said additional information in the form of visible light to the mobile communication terminal. Further, according to the present invention, it is possible to provide various additional information corresponding to the request from the mobile communication terminal.

Abstract: A stereoscopic video processing device includes a candidate coordinate range calculation unit configured to calculate a range of candidate coordinates of a display position of a reference point of a two-dimensional object in a screen, a parallax total value calculation unit configured to calculate a total value of parallax values of pixels of a region overlapping the two-dimensional object in the stereoscopic video, for each candidate coordinate, a display position determination unit configured to determine a candidate coordinate having a smallest total value of the parallax values as the display position of the reference point of the two-dimensional object, a maximum value specifying unit configured to specify a maximum value of the parallax values of the pixels of the region overlapping the two-dimensional object in the stereoscopic video, and a parallax setting unit configured to set the parallax of the two-dimensional object displayed in the stereoscopic video.

Abstract: A method and apparatus for providing additional information included in a video displayed on a display device using visible light communication (VLC). A data packet including video data and additional information for an object included in the video data is received. The video data is extracted from the data packet, and the video data is decoded. The additional information from the data packet is extracted, and the additional information decoded. The decoded video data is output through the display device, and at the same time, the additional information is transmitted for a particular object included in a video based on a VLC protocol using a light emitting device prepared in the display device. The additional information providing apparatus includes an image sensor module, a display module, a visible light receiving module, an additional information manager and a controller.

Abstract: An image display device for displaying a 3-Dimensional (3D) image and a method for operating the same are disclosed. The image display device includes a user input unit configured to receive an item selection signal for some of one or more items included in a User Interface (UI) image, a control unit configured to generate a detailed image of a selection item selected by the item selection signal as a 3D image, and a display unit configured to display the detailed image. A user can select and receives an UI image or items included therein as a 3D image, and select a 2D/3D mode of the displayed UI image so as to control a sense of depth thereof. If a plurality of UI images is displayed, the image display device can display UI images on multiple layers with senses of depth.

Abstract: On a recording medium, stereoscopic and monoscopic specific areas are located one after another next to a stereoscopic/monoscopic shared area. The stereoscopic/monoscopic shared area is a contiguous area to be accessed both in stereoscopic video playback and monoscopic video playback. The stereoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in stereoscopic video playback. In both the stereoscopic/monoscopic shared area and the stereoscopic specific area, extents of base-view and dependent-view stream files are arranged in an interleaved manner. The extents on the stereoscopic specific area are next in order after the extents on the stereoscopic/monoscopic shared area. The monoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in monoscopic video playback. The monoscopic specific area has a copy of the entirety of the extents of the base-view stream file recorded on the stereoscopic specific area.

Abstract: Systems and methods for performing secure playback of media content are described. One embodiment, among others, is a method for performing secure playback of video in a hardware protection module. The method comprises receiving media content from a media player comprising video data, audio data, and navigation data. The method further comprises receiving digital rights management (DRM) information relating to the media content, removing a portion of the video data from the media content, forwarding the audio data, navigation data, and a remaining portion of the video data to the media player for decoding, and decoding, in the hardware protection module, the portion of the video data.

Abstract: Embodiments of the present invention provide faster user-selected scene switching during playback of a video production. In one embodiment, several channels of video (e.g., several video streams each depicting a different camera angle) are read from interleaved data on a DVD disc. Each channel's data is maintained in a channel buffer that is input to a video decoder via a selector. When a signal from a user input device indicates that a user has selected a new channel, the selector can immediately provide the selected channel's data from the channel buffer to the video decoder, thus providing an increase in switching speed.

Abstract: For a content-prerecorded large capacity disc-shaped recording medium, a user interface having high flexibility is accomplished. Button image data, corresponding sound data as an effect sound, and control commands for the sound data and image data are multiplexed with a stream and recorded on the disc. A scenario reproduced from the disc is stored in a buffer. The image data and sound data are stored in a buffer. Image data is read from the buffer in accordance with a scenario and expanded to a graphics plane. In addition, corresponding sound data is read from the buffer and reproduced by a sound player. When a button image is varied in accordance with a state change of the button, an effect sound is reproduced. As a result, a more effective user interface is accomplished.

Abstract: A system for switching from a first (14) to a second (16) audio/video sequence, the second sequence (16) including a splice point time stamp (12), the system including a disk (18) to store the first sequence (14), a receiver to receive the second sequence as live audio/video, a demultiplexer arrangement (24) to demultiplex at least some of the first sequence (14) from the disk (18) and the second sequence (16) from the receiver, demultiplex the first sequence fast enough so that the demultiplexing of the second sequence (16) can commence a number of frames prior to the splice point time stamp (12), a buffer (28,30) to receive for storage from the demultiplexer arrangement (24), the demultiplexed audio/video of the first sequence (14) and at least part of the second sequence (16), and a decoder (34,36) to decode the demultiplexed audio/video stored in the buffer (28,30) including decoding the first sequence (14) and then the second sequence (16) from the splice point time stamp (12).

Abstract: A recordable and/or rewriteable recording medium for storing still picture data, and recording and/or reproducing method and apparatus therefor. The recording medium stores still picture group information for grouping a plurality of still pictures in order to manage the still picture at a group level, and stores audio group information for grouping additional audio data added to the still picture data after the still picture data are recorded. Therefore, large-capacity still picture data and additional audio data added thereto can be recorded using a minimum amount of management information. Further, during reproduction, data can be displayed and edited in units of the respective still pictures. Also, it is possible to cope with after-recording of the audio data.

Abstract: An IP network includes a central entity and at least one customer premises equipment (CPE) device. The central entity generates a program clock reference (PCR) clock and provides audio-visual packets to a CPE based on the PCR clock. The CPE sets a first clock based on the PCR clock for decoding operations. The CPE sets a second clock that is independent from the first clock for audio and video output operations. For example, the CPE can process the audio-visual packets using the second clock.

Abstract: Disclosed are a reproduction apparatus, a reproduction method, a recording apparatus, a recording method, a program and a data structure which can rapidly read a plurality of files from a recording medium at the same time. A reproduction apparatus 22 continuously reads interleaved data from a disc 21 which records a file of an ISO base media file format. The file includes interleaved data which is physically and continuously recorded on the disc 21 by dividing each data stream of files B and D into interleave units and by interleaving the interleave units, and position information which indicates, using the interleave unit as a chunk of the ISO base media file format, the position of the interleave unit which forms the chunk. Further, the reproduction apparatus 22 de-interleaves the interleaved data into the interleave units of each of the files B and D, on the basis of the position information.

Abstract: A moving image playback apparatus includes: a data playback section playing back delta-sigma modulated data generated by performing delta-sigma modulation on pixel values of consecutive frames for each pixel; a video-data playback section performing filtering processing on the delta-sigma modulated data played back by the data playback section using a filter for each pixel to play back video data; and a control section controlling the filtering processing.

Abstract: AVClip recorded in BD-ROM is obtained by multiplexing a graphics stream and a video stream. The graphics stream is a PES packet sequence that includes 1) PES packets storing graphics data (ODS) and 2) PES packets storing control information (PCS). In each ODS, values of DTS and PTS indicate a timing of decoding start for corresponding graphics data, and a timing of decoding end for corresponding graphics data, respectively. In each PCS, a value of PTS indicates a display timing of corresponding decoded graphics data combined with the video stream.

Abstract: In a digital broadcasting signal receiving/recording/reproducing apparatus, a recorded program can be immediately reproduced without performing complicated operations. Only a desired program and information related to the desired program are separated to be extracted from the digital broadcasting signal. Then, the separated/extracted broadcasting signal is supplied to a recording/reproducing apparatus. In the recording/reproducing apparatus, the supplied broadcasting signal is recorded, and the recorded program can be immediately reproduced without complicated manipulating operations during the signal reproducing operation.

Abstract: A method, an apparatus, and an information recording medium for storing and reproducing an interactive service capable of efficiently storing and processing interactive signaling information are provided. The information recording medium has recorded thereon interactive signaling information of a digital broadcast and includes a first region storing information on a time when the interactive signaling information occurs, a second region storing a type of the interactive signaling information and identification information; and a third region storing signaling items of the interactive signaling information. In the method and apparatus, filtering and monitoring using hardware or software to acquire interactive signaling information on a service stream for reproducing an interactive service is unnecessary because the signaling information is separately stored.

Abstract: For a content-prerecorded large capacity disc-shaped recording medium, a user interface having high flexibility is accomplished. Button image data, corresponding sound data as an effect sound, and control commands for the sound data and image data are multiplexed with a stream and recorded on the disc. A scenario reproduced from the disc is stored in a buffer. The image data and sound data are stored in a buffer. Image data is read from the buffer in accordance with a scenario and expanded to a graphics plane. In addition, corresponding sound data is read from the buffer and reproduced by a sound player. When a button image is varied in accordance with a state change of the button, an effect sound is reproduced. As a result, a more effective user interface is accomplished.

Abstract: A digital video recorder (DVR) system with an integrated DVD recording device accepts TV input streams in a multitude of forms. Analog TV streams are converted to an MPEG formatted stream for internal transfer and manipulation, while pre-formatted MPEG streams are extracted from the digital TV signal and presented in a similar format. Indexes within the MPEG stream are determined and saved at predefined intervals and are stored on a hard disk along with the MPEG program material and used to create navigation packets when writing to a DVD inserted in an integrated DVD player/recorder. When a program is requested for display from the hard disk or the integrated DVD player/recorder, the program material are extracted from the appropriate source and reassembled into an MPEG stream which is sent to a decoder. The decoder converts the MPEG stream into TV output signals and delivers the TV output signals to a TV monitor.

Abstract: Techniques are described for determining whether a stream is in a stable state and permitting adjustment of the PTS value when the stream is in a stable state. The stream can be in a stable state when PTS values received over a period of time do not change unexpectedly. For example, when the stream is in a stable state, the PTS value for audio or video can be adjusted based on system buffer levels, i.e., over flow or under flow. The amount of adjustment of the PTS value can be based on whether the buffer level appears to be moving into greater overflow or underflow. In some cases, when the stream is not in a stable state, the audio is permitted to be played back at a sample rate and video is permitted to be played back at a frame rate instead of being controlled by PTS.

Abstract: A multimedia framework includes a monolithic multimedia component to include a specific interface provided by the multimedia framework, and a component control unit layer to serve as a point of control of an application, and to control a data flow through the monolithic multimedia component. When the application queries the component control unit layer for the specific interface, the specific interface passes a pointer thereof that signifies a role required by the application matching a role identified by the multimedia framework for the monolithic multimedia component to the application. A command from the application is transmitted to a tunnel of a multimedia stack interfaced with the monolithic multimedia component to ensure that the same monolithic multimedia component serves as a source component, one or more transform component(s) and/or a renderer. The application is unaware of the multi-tasking associated with the monolithic multimedia component.

Abstract: A read unit 201 reads a digital stream that includes a left-view video stream and a right-view video stream from a recording medium. A mode storage unit 203 stores either a 3D mode to show a user video frames in stereoscopic view or a 2D mode to show a user video frames in monoscopic view as a playback mode of the apparatus. A dimension determining unit 202 determines whether the digital stream read from the recording medium supports 3D mode. When (i) the digital stream supports 3D mode and (ii) the current playback mode is 3D mode, a demultiplexer 204 separates the left-view video stream and the right-view video stream from the digital stream, and when condition (i) or (ii) is not met, the demultiplexer 204 separates either the left-view video stream or the right-view video stream from the digital stream.

Abstract: A BD-ROM stores a video stream and a graphics stream. The video stream represents a moving picture. The graphics stream is used for overlaying a multi-page menu on the moving picture, and includes interactive control information (ICS) and graphics data (ODS) used for generating the multi page menu. A PTS attached to a PES packet containing the interactive control information shows timing for the first presentation of a main page the multi-page menu in accordance with the proceeding of the video stream playback. In addition, the interactive control information includes information (selection_time_out_pts) showing a timeout upon which a button on a page of the multi-page menu is automatically activated, and information (user_time_out_duration) showing a timeout upon which a sub-page of the multi-page menu is automatically removed.

Abstract: A method of multimedia processing includes providing a multimedia processor operating at a frequency lower than that of a central processor of a multimedia processing system. A multimedia framework is implemented in the multimedia processing system. The multimedia framework is utilized to execute, on the multimedia processor, one or more of reading an input, transforming a data based on the reading of the input, and placing an output based on the transforming of the data on a rendering device. Power dissipated in the multimedia processing system is reduced by solely executing a requisite parsing on the central processor of the multimedia processing system.

Abstract: The multiplexing apparatus which does not make a user who watches a moving picture feel uncomfortable, the moving picture including: (i) a coding unit (42) for generating one or more coded streams so that no gap occurs at the connection of predetermined two access units in a process of decoding, in sequence, the two access units in all of the access units included in the coded streams; and (ii) a multiplexing unit (18) for multiplexing, with other information, the coded streams generated in the coding unit (42).

Abstract: When a plurality of AVClips recorded on a BD-ROM and Local Storage 18 constitute one stream sequence, a Playback Control Engine 32 starts playback if at least one AVClip of the stream sequence is in an enable status, even when the stream sequence also includes an AVClip which is in a disable status. While one AVClip is being played back, a Virtual FileSystem unit 38 changes a remaining AVClip to the enable status of being recognizable by the Playback Control Engine 32 or the disable status of being unrecognizable by the Playback Control Engine 32, according to a method call by an application.

Abstract: The digital signal recording/reproducing apparatus inputs a digital signal having a control flag as to a temporary copy permission, and records the digital signal temporarily into a recording medium in accordance with conditions in the control flag, then reproducing the digital signal temporarily from the recording medium in accordance with the conditions in the control flag. The recording/reproducing of the temporary copy is permitted, depending on the following conditions: The recording medium's type, the reproducing point-in-time, the reproducing time-period, and the reproducing frequency. With this method employed, even in a program permitting no recording, the temporary recording/reproducing is permitted under a condition of being limited to the time-shift recording on the receiving side.

Abstract: An IP network includes a central entity and at least one customer premises equipment (CPE) device. The central entity generates a program clock reference (PCR) clock and provides audio-visual packets to a CPE based on the PCR clock. The CPE sets a first clock based on the PCR clock for decoding operations. The CPE sets a second clock that is independent from the first clock for audio and video output operations. For example, the CPE can process the audio-visual packets using the second clock.

Abstract: AVClip recorded in BD-ROM is obtained by multiplexing a graphics stream and a video stream. The graphics stream is a PES packet sequence that includes 1) PES packets storing graphics data (ODS) and 2) PES packets storing control information (PCS). In each ODS, values of DTS and PTS indicate a timing of decoding start for corresponding graphics data, and a timing of decoding end for corresponding graphics data, respectively. In each PCS, a value of PTS indicates a display timing of corresponding decoded graphics data combined with the video stream.

Abstract: A reproducing apparatus configured to reproduce moving image data based on management information including time information and position information about a plurality of intra pictures in the moving image data and display the reproduced moving image data on a display includes a determination unit configured to acquire information about a time interval and a position interval between two intra pictures from the time information and the position information and determine a bit rate between the two intra pictures, and a display control unit configured to display information concerning the bit rate determined by the determination unit, on the display.

Abstract: There is provided an image reproduction apparatus for seamlessly reproducing a connected stream which is obtained by connecting plural streams that are respectively coded by different codec methods. An image reproduction apparatus (100) for reproducing a connected stream which is obtained by connecting plural streams of different codec methods such as an MPEG-2 method and an MPEG-4 AVC method is provided with a stream buffer (102) in which the connected stream Bst is stored, and plural decoders Dd1˜Ddn corresponding to the various kinds of codec methods, and a decoder for decoding each stream in the connected stream Bst that is outputted from the stream buffer (102) is selected from among the plural decoders according to the codec method of each stream.

Abstract: A system for decrypting multiple transport streams is disclosed. The system includes: a Multiple Transport stream Multiplexer (M-Mux), for receiving at least a first transport stream and a second transport stream, and outputting a resultant transport stream; a multiple transport stream decryption card for decrypting the resultant transport stream to output a decrypted transport stream; a Source Multiplexer (S-Mux) for receiving the decrypted transport stream from the multiple transport stream decryption card and the resultant transport stream, and outputting a final resultant transport stream; and a Multiple Transport Stream Processor (M-Processor) for receiving the final resultant transport stream, and sending the final resultant transport stream to a corresponding framer.

Abstract: A media processing method for performing media processing by causing a processor to execute plural program modules, includes controlling input/output of media data, determining at least one call time, and calling a second program module in a second layer at each determined call time, by executing a first program module in a first layer, the first layer being higher than the second layer. The method further includes causing the processor to perform data conversion on the media data, by executing the second program module in the second layer, the data conversion being part of the media processing.

Abstract: A recording medium according to an embodiment of the present invention includes a base-view stream and a dependent-view stream. The base-view stream is used for monoscopic video playback. The dependent-view stream is used for stereoscopic video playback in combination with the base-view stream. The recording medium further includes a first file and a second file. The first file refers to the base-view stream in monoscopic video playback, and the second file refers to the base-view stream in stereoscopic video playback.

Abstract: An integrated circuit includes a storage that stores a module that has a function of a virtual machine for executing an application recorded on a recording medium. The integrated circuit also includes a central processing unit that executes the module to cause the virtual machine to function and a decoder, that is distinct from the central processing unit, that decodes a video stream and an audio stream that are included in digital streams stored on a recording media. When the central processing unit executes the module, a package manager manages status information of the digital streams. If at least one of the digital streams is in an enable status, the decoder decodes the digital stream. When the decoder decodes the digital stream, the package manager changes the status information of another digital stream to an enable status or a disable status according to a request from the application.

Abstract: There is provided stream generating apparatus which generates a multiplexed stream including moving picture data. The apparatus includes a moving picture encoding processing section for generating a moving picture stream by encoding the moving picture data allowing switching between a reference frame rate and more than one frame rate different from the reference frame rate according to a desired timing; a time control information generating section for generating playback time control information with certain intervals corresponding to picture frame display cycles relevant to the reference frame rate, for each picture frame inputted to the moving picture encoding processing section; and a multiplexing processing section for generating the multiplexed stream by multiplexing the moving picture stream and the playback time control information.

Abstract: Provided are a device and method for providing a three-dimensional PIP image, for combining and outputting a main image with a PIP image. A device for providing a three-dimensional PIP image according to one embodiment of the present invention comprises: an image acquisition unit for acquiring a main three-dimensional image and a two-dimensional or three-dimensional PIP image from a broadcast signal, external device, or recording medium; a PIP-combining unit for combining the main image and the PIP image; and a three-dimensional formatter for formatting the combined image of the main image and the PIP image into a format that can be stereoscopically displayed. Accordingly, an image may be provided with a main three-dimensional image and a two-dimensional PIP image or a main three-dimensional image and a three-dimensional PIP image which are overlaid.

Abstract: An AV Clip generated by multiplexing a video stream and a graphics stream is recorded on a BD-ROM. The graphics stream includes a plurality of DSs (Display Sets) each of which is used for graphics display and includes a control segment and graphics data. When an active period of the control segment in the DS overlaps with an active period of a control segment in an immediately preceding DS on a reproduction time axis of the video stream the graphics data in the DS is assigned a different object_id from graphics data which is referenced by the control segment in the immediately preceding DS, so as to prevent graphics generated by decoding the graphics data in the DS from overwriting graphics generated by decoding the graphics data referenced by the control segment in the immediately preceding DS.

Abstract: A signal reproduction device and signal reproduction method capable of automatically discriminating the format of input data and reproducing the data is provided.

Abstract: On a recording medium, stereoscopic and monoscopic specific areas are located one after another next to a stereoscopic/monoscopic shared area. The stereoscopic/monoscopic shared area is a contiguous area to be accessed both in stereoscopic video playback and monoscopic video playback. The stereoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in stereoscopic video playback. In both the stereoscopic/monoscopic shared area and the stereoscopic specific area, extents of base-view and dependent-view stream files are arranged in an interleaved manner. The extents on the stereoscopic specific area are next in order after the extents on the stereoscopic/monoscopic shared area. The monoscopic specific area is a contiguous area to be accessed immediately before a long jump occurring in monoscopic video playback. The monoscopic specific area has a copy of the entirety of the extents of the base-view stream file recorded on the stereoscopic specific area.

Abstract: A device for displaying stereoscopic video images on a screen includes a receiving unit, signal processing unit, and display unit. The receiving unit receives stream data including left-view frames and right-view frames of stereoscopic images. The signal processing unit alternately extracts left-view frames and right-view frames from the stream data. Over one frame period of the stereoscopic video images, the signal processing transmits a pair of a left-view frame and a right-view frame when the control information indicates a 3D playback mode, and transmits only a left-view frame when the control information indicates a 2D playback mode. The display unit displays each frame transmitted from the signal processing unit for a predetermined time on the screen.

Abstract: When a plurality of AVClips recorded on a BD-ROM and Local Storage 18 constitute one stream sequence, a Playback Control Engine 32 starts playback if at least one AVClip of the stream sequence is in an enable status, even when the stream sequence also includes an AVClip which is in a disable status. While one AVClip is being played back, a Virtual FileSystem unit 38 changes a remaining AVClip to the enable status of being recognizable by the Playback Control Engine 32 or the disable status of being unrecognizable by the Playback Control Engine 32, according to a method call by an application.

Abstract: According to one embodiment of the invention, a computerized method for reporting events from a television that supports transmission and playback of digital content in accordance with an Advanced Television Systems Committee (ATSC) standard. The method comprises downloading a triggered declarative object (TDO), which includes a reporting script, for storage within a digital receiver of the television. Thereafter, information associated with one or more detected events that occur during playback of the digital content is recorded and subsequently, upon execution of the reporting script, is output over a communication path separate from a communication path of the received digital content.

Abstract: According to one embodiment, a playback apparatus includes a multimedia processor configured to allocate a first stream buffer area in a first memory for storing a encoded video data, and includes a decoder configured to decode the encoded video data, a main processor configured to execute a decoding program application for decoding the encoded video data, and to execute a switching program application configured to switch a destination where the decoding is executed between the multimedia processor and the decoding program application such that a picture group which is a unit for managing the encoded video data is not separately supplied to two destinations, in response to a switching request, wherein the decoding program application is configured to allocate a second stream buffer area in a second memory for storing the encoded video data and a decoding buffer area in the second memory for storing data related to decoding.

Abstract: The present invention relating to an information processing device, information processing method, playing device, playing method, and program that enables playing of stereo image (3D image) contents appropriately. In the case that 3D playing using Base view video and D1 view video is instructed, “10000.ilvt (ref_to_D1-B_interleaved_file_name) described in interleaved_file_info ( ) of the PlayList file is specified, and Base view video chunks and D1 view video chunks are read out from an optical disc through a UDF file system. The Base view video chunks and D1 view video chunks that are read out are supplied to a decoder unit and played. The present invention is applicable to a playing device compatible with the BD-ROM standard.

Abstract: An information recording medium is provided with: a file for storing object data which constitutes a series of content information, such as picture information or video information and audio information, and a play list information file for storing play list information which defines a reproduction sequence of the object data by a unit of play list. The information recording medium is further provided with a disc information file for storing a plurality of title play lists including information for specifying the play list information which defines the play list to be reproduced, Pre command information and Post command information, which indicate commands to be executed before and after the reproduction, respectively, based on the play list information.

Abstract: A more efficient method of recording programs simultaneously is provided in one embodiment by translating certain bands of the RF spectrum and translating and or reordering the channel allocation into a (analog) spectrum of one or more lower intermediate frequency band(s). A recorder records the analog RF spectrum, which then is available for playback from the recorder. Programs contained in the played back RF spectrum are selectively extracted by means of a tuner and or demodulator for subsequent viewing, listening, or distribution. Alternatively, an RF signal is supplied to a recorder for recording or storage without translation. The recorder then plays back the RF signal to a tuner and or demodulator for display and or distribution.

Abstract: An original stream file and an after-recording data file are managed as different files. In the original stream file, data is made up of sets of partial data (CU) divided in accordance with a predetermined interval. Likewise, in the after-recording data file, data is made up of sets of partial data (CA) divided in accordance with a predetermined interval. These sets of data are recorded onto a disc such that the after-recorded data (CA) is recorded in a region adjacent to a relevant original stream (CU). This allows reproduction and real-time after-recording with the use of a general MPEG-2 PS/TS decoder. Moreover, this allows realization of data recording that causes less interruption of reproduction when non-destructive editing is carried out with respect to an after-recorded result.