摘要:
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.
摘要:
When advance prediction is conducted for overflows and underflows, which are both types of buffer errors, and the occurrence of a buffer error is predicted, frames that a viewer will be unlikely to notice even if playback is omitted or conducted for a different duration from a predetermined standard duration are omitted or played for a different playback duration.
摘要:
An information processing apparatus in which compressed picture information of different compression encoding formats may be generated and recorded on different recording mediums without enlarging the size of the apparatus. An MPEG2 encoder 2 is supplied with the picture information and encodes the input information in the MPEG 2 format under control by a CPU 3 to generate an MPEG 2. A hard disc drive 5 records the MPEG2 bitstream on the hard disc under control by the CPU 3. The CPU 3 boots a software on a memory to perform transcode processing to generate an MPEG 4 bitstream from the MPEG2 bitstream. The motion vector as found in transiently decoding the MPEG2 bitstream into the picture information is inherited and re-used as the motion vector for the MPEG 4 bitstream. A memory card drive 6 records the MPEG 4 bitstream on the memory card under control by the CPU 3.
摘要:
It is intended to remove a risk of illegal high quality restoration while enabling trial viewing of contents such as music, to make it possible to reproduce contents with high quality by acquiring a relatively small amount of data, and to make it possible to implement hardware at a lower cost. To generate trial listening data containing dummy data, a pseudo random number R is generated first. A remainder r of R divided by 128 is calculated. The remainder r is coded and incorporated into high sound quality restoration data. A bandwidth limitation region of trial listening data is replaced by dummy data starting from its rth bit. As a result, the head position of the dummy data in the trial listening data varies frame by frame, whereby the safety of the trial listening data can be increased.
摘要:
Disclosed is a recording apparatus for recording a plurality of audio-visual contents stored in a HD to a writable DVD. A drive controller 15 copies at least one of the contents stored in the HD to the DVD. If the available capacity of the DVD left after the copying falls short to copy a remaining content, the remaining content is re-encoded prior to being recorded in the DVD. The bit rate to be allocated to the remaining content upon re-encoding is calculated from the available capacity of the DVD and the reproduction time of the remaining content to be re-encoded.
摘要:
A method and an apparatus for recording and playing back monitored video data for recording monitored video data generated continuously for a long time on a magnetic tape, with less S/N degradation by shortening the operation time of the VTR to suppress the degradation of the magnetic tape, recording head, and other mechanical items, wherein video signals from a video camera are converted to digital signals in an A/D converter, compressed and encoded in a compression encoder & decoder circuit, then transferred to a time axis compression circuit including the first memory, the second memory, an SCSI controller, and a hard disk unit, thereafter compressed on the time axis and recorded on the magnetic tape loaded in a D-VHS standard VTR via an I/F circuit. Compressing the video data from the compression encoder & decoder circuit on the time axis in the time axis compression circuit makes shorter the recording time of the video data on the magnetic tape than the actual recording time of the video camera, whereby the VTR is only required to record video data intermittently on the magnetic tape and that a general home VTR can be adopted as the above VTR, moreover the magnetic tape itself is prevented from damages.
摘要:
A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.
摘要:
A method and apparatus for simultaneously recording and displaying video signals from two different video sources. The apparatus comprises a main channel processing circuit/logic (148), a second channel processing circuit/logic (150), and common circuitry/logic (152). The common circuitry comprises a digital video encoder pipe (112) that decodes both a first and second encoded video signals. The main channel processing circuit processes a first decoded video signal utilizing a first clock to form a main picture for display. The second channel processing circuit processes a second decoded video signal to form a PIP picture for combination with the main picture for display. The PIP picture is produced using a second clock signal that is independent from the first clock signal. In a record mode, the second channel clock is coupled to the second channel processing circuit to produce a recordable signal using a digital encoder. The recordable signal also forms the PIP picture that is coupled to the main channel processing circuit to produce a PIP picture that is used to monitor the recording process.
摘要:
A video recorder/reproducer comprises means for continuing, when a recording stop request is inputted during a recording operation, an operation for reading out data from a memory and an operation for recording the data on a recording medium but stopping the writing of the data into the memory, and means for stopping the recording operation after the readout of the data finally written into the memory and the writing of the data into the recording medium are terminated.
摘要:
In recording information, an SMPTE 339M-defined UMID buried in video and audio material signals to be recorded to a magnetic tape (30) or a UMID generated from information other than the material signals, is written to a contactless memory tag (37), whereby it is made possible to acquire a UMID for material signals recorded in the recording medium without having to actually read the material signals recorded in the recording medium and use the UMID for data search, validation, etc.