Abstract: A disc reproducing apparatus which reproduces images recorded on an optical disc has: scene detecting means for detecting scenes with judging, as a leading frame of a scene, a frame which is abnormally biased to one of future and past time directions of predictive coding of B-pictures; scene reproduction controlling means for, each time when a predetermined time period which is preset elapses, reproducing images of the scenes which are detected by the scene detecting means, for a predetermined time period which is preset; and timer controlling means for measuring and controlling the time periods.

Abstract: In a video tape recorder, a digital AV signal which is A/D-converted by an A/D converting section 12 is separated into a video signal and an audio signal by an audio-video separating section 131. In response to a selection operation on an operating section 19, the separated digital video and audio signals by an editing section 132 are edited and then recorded on a hard disk 14. The digital video and audio signals which are obtained by performing a reproducing process on the hard disk 14 are supplied by the editing section 132 to an audio-video multiplexing section 134. The digital video and audio signals are multiplexed by the audio-video multiplexing section 134, and then recorded on a D-video tape 15.

Abstract: A VOB composed of a plurality of VOBUs and Cell information are recorded on an optical disk. Each VOBU includes a plurality of sets of picture data, and the Cell information specifies a reproduction section (Cell). According to a user indication, picture data corresponding to an IN point of a delete section and picture data corresponding to an OUT point of the delete section are specified in the Cell. If the number (j?i?1) of VOBUs present between the ith VOBU including the former picture data and the jth VOBU including the latter picture data is smaller than a predetermined number u, a warning of a data size increase is displayed. If j?i?1 is greater than u, the Cell information is rewritten so that the parts of the Cell preceding and succeeding the delete section become two consecutive Cells, and the (i+s+1)th to (j?t?1)th VOBUs are deleted from the optical disk.

Abstract: A method and apparatus for creating a trick play video display from an MPEG-2 digital video transport stream are described. A trick play transport stream frame sequence template for each transport stream frame sequence and trick play video display mode supported by a video recorder is stored in the recorder. When the recorder receives an input transport stream frame sequence, the sequence is identified and template corresponding to that sequence and the selected trick play display mode is selected. The template is used to identify frames of the input transport stream to be appended to the trick play display transport stream frame sequence. When the trick play transport stream frame sequence is constructed the program clock reference, presentation time stamps and decoding time stamps associated with the frames are updated from information in the template.

Abstract: A client for reproducing a video session includes a memory and a processor coupled to the memory. The memory stores a first video frame that includes first video data, a first video sub-frame comprising second video data that is different from the first video data, and a second video sub-frame comprising third video data. The processor generates a second video frame using the first video frame and the first video sub-frame, wherein the third video data is different from the video data of the second video frame. The processor further generates a third video frame using the second video frame and the second video sub-frame, and displays the first video frame.

Abstract: An apparatus for reproducing video and audio includes a video decoder which receives video data coded by a unit of a first time length, an audio decoder which receives audio data coded by a unit of a second time length different from the first time length, and a synchronization control unit which suspends video output of said video decoder and audio output of said audio decoder, and resumes the audio output a certain time period after resuming the video output where the certain time period corresponds to a period from the suspension of the video output to the suspension of the audio output.

Abstract: An information recording medium for recording a real-time file containing real-time data in such a manner that the real-time data is continuously reproducible by a playback reference model, the real-time data including at least one of video data and audio data. The playback reference model includes: a pickup for reading the real-time data from the information recording medium; a buffer memory for temporarily storing the real-time data read by the pickup; and a decoder module for reading the real-time data from the buffer memory for processing. The information recording medium includes a volume space for at least recording in sectors a file containing data and file management information for managing the file. The real-time data is recorded in at least two real-time extents each of which is allocated in logically contiguous sectors within the volume space. An (i+1)th real-time extent among the at least two real-time extents is positioned at a position satisfying a real-time reproduction condition.

Abstract: A method of reproducing first images and second images simultaneously, synchronizing them with each other. The method includes the processes of: reading first image data representing the first images and second image data representing the second images from a recording medium; storing the first image data into a first memory device and storing the second image data into a second memory device; and separately and simultaneously decoding the first image data and the second image data by using a first decoding device and a second decoding device. In this method, each of the first image data and the second image data is divided into a plurality of data units each having an equal time length and an equal data size, and each of the data units of the first image data and each of the data units of the second image data are alternately arranged on the recording medium.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: Timecoding systems, methods and data structures are described which, in some embodiments, permit a true time to be ascertained from media samples whose timecodes contain an amount of drift which can arise from having non-integer frame rates. Inventive methods incorporate the use of an offset parameter that describes a time difference between a timecode and a true time associated with a media sample. The inventive approaches can be incorporated with and used compatibly in connection with current timecoding paradigms such as SMPTE timecode and the like. Further embodiments permit timecoding to take place at the field level of a frame. This can permit true-time calculations to be done to ascertain the true time associated with individual fields of a frame. In addition, other embodiments provide novel counting compensation methods that are directed to reducing the drift that can be associated with media samples that are sampled at non-integer frame rates.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: An information recording medium for recording a real-time file containing real-time data in such a manner that the real-time data is continuously reproducible by a playback reference model, the real-time data including at least one of video data and audio data. The playback reference model includes: a pickup for reading the real-time data from the information recording medium; a buffer memory for temporarily storing the real-time data read by the pickup; and a decoder module for reading the real-time data from the buffer memory for processing. The information recording medium includes a volume space for at least recording in sectors a file containing data and file management information for managing the file. The real-time data is recorded in at least two real-time extents each of which is allocated in logically contiguous sectors within the volume space. An (i+1)th real-time extent among the at least two real-time extents is positioned at a position satisfying a real-time reproduction condition.

Abstract: In a data processing apparatus and method, watermark information embedded in data can be detected even if the data is subjected to various processing. The apparatus includes a processor for processing data, an output unit for outputting the data processed by the processor, a measurement unit for measuring and determining a processing record of the processed data, and a controller for controlling the operation of the processor based on the processing record.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: A coded picture data reproducing apparatus which is able to repetitively reproduce picture data starting at a designated start-frame is provided. The coded picture data reproducing apparatus is capable of reproducing predictively coded MPEG system picture data by using a correlation between frames and thus capable of repetitively reproducing frames across a designated start-position and an end-position. When a frame corresponding to a B-picture to be reproduced in preceding a frame corresponding to an I-picture, among picture data in GOPs in reproduction is designated as a start-frame, a controller Mp controls to execute the repetitive reproduction across the start-frame and an end-frame by controlling an optical pickup Pu, a memory Dmp for storing picture data and an MPEG decoder Mpg to fetch the B-picture of the frame corresponding to the decoded start-frame.

Abstract: A system and method of playing recorded content on a DVD player employs software instructions on a DVD storage medium to control a DVD-Video player to make pseudo-random selections of content items from the DVD storage medium. Each content item may include an individual video sequence or a string of video sequences. Each content item is associated with a respective identification codes, such that each content item is associated with a corresponding identification code that is different from the identification codes of other content items. The DVD player controller is controlled to select, by pseudo-random selection or generation, at least one of the identification codes from the plurality of identification codes. The DVD player controller may be controlled to perform that pseudo-random selection or generation with software stored on (and read from) the DVD storage medium.

Abstract: A digital magnetic recording/reproducing device for recording or reproducing plural sorts of audio data, and a recording/reproducing method therefor. The digital magnetic recording/reproducing device includes an analog-to-digital (A/D) and digital-to-analog (D/A) converter for converting an audio analog signal into digital data or vice versa, a formatter/deformatter for converting a format of the audio signal and the data grouped to be stored in the recording sectors of the magnetic tape, a recording selection unit for transmitting the input audio signal to the A/D converter or formatter according to the type of the audio signal, and a reproduction selection unit for transmitting the data reproduced from the magnetic tape to the D/A converter or deformatter. The output data from the A/D converter and the output data from the formatter are recorded on the different recording sectors of the magnetic tape.

Abstract: The erasion level appending range of a file is instructed. According to this instruction, the erasion level is set. When this setting range does not agree with the cell unit of the current cell, the current cell is divided to set a sequence of divided cells. Playback management information of each of the divided cells and current cell is re-created, and erasion level information is appended to playback management information of the divided cell that belongs to the appending range.

Abstract: A set top box can be connected to a DVD Streamer via an IEEE1394 interface which contains means to timestamp data and to strip off these timestamps again, using them for timing regeneration. The DVD stream also must regenerate the timing of data packets as it was upon recording, when these packets are played back. The streamer could also use its own timestamps and strip them off again when replaying. So, in total, there is an in-series connection between two time stamping and time regeneration mechanism which introduces jitter accumulation.

Abstract: A recorder capable of automatically recording a broadcast program without presetting recording of each program is disclosed. According to the automatic broadcast program recorder, keywords characterizing a program to be recorded are preliminarily designated, a reservation table of programs as candidates to be recorded is created by checking program information with the keywords each time the program information is updated, and video data of the program as a recording candidate is automatically recorded at the start time of the program stored in the reservation table.