摘要:
This invention relates to a data transmission method or the like suitable for transmitting video data, audio data or the like. There is transmitted a serial digital transfer interface transmission packet in which an interval of each line of a video frame comprises an end synchronizing code area into which an end synchronizing code is inserted, an ancillary data area into which ancillary data is inserted, a start synchronizing code area into which a start synchronizing code is inserted and a payload area. The payload area has inserted thereto first data containing extension data having editing point information at the picture unit of video data and second data containing main data comprising video data and/or audio data. The reception side is able to effect a necessary processing such as muting of sounds on the editing point by effectively utilizing editing point information.
摘要:
A data recording and reproducing apparatus for recording and reproducing video signals in a plurality of formats with different rates to/from a record medium is disclosed. In the data recording and reproducing apparatus, a video signal in a selected format is converted into video data packets and audio data packets whose lengths are optimally designated corresponding to the selected format. With a video data packet and an audio data packet, a video sync block and an audio sync block whose lengths are different are formed, respectively. The video sync block and the audio sync block are encoded with respective error correction codes. The resultant data is recorded as record data to a record medium. Corresponding to the data rate of the video signal, at least one data packet is placed in one video sync block. A synchronization detecting apparatus automatically and accurately detects sync blocks with different lengths from a data sequence of record data reproduced from a record medium. The synchronization detecting apparatus separates the detected sync blocks into video sync blocks and audio sync blocks. The video sync blocks and the audio sync blocks are decoded with respective error correction codes. As a result, video data and audio data are restored.
摘要:
The present invention provides remarkably improved availability in a data recording method and apparatus, a data recording medium, and a data reproducing method and apparatus. By recording additional information for data reproduction in each sector on a data reproducing medium as a subcode separately from data when the data is recorded in the unit of sector, reproduction of data can be controlled using the subcode, thus making it possible to remarkably improve the availability of the data recording medium.
摘要:
An authoring system according to the present invention is constituted so that when an audio signal and a video signal are encoded by an encoder and converted to one system of serial data, operation can be smoothly executed by simple constitution, compared with heretofore and the progress of processing in each device can be grasped. A condition set by a user is stored in a file and the file is shared among the encoder and others.
摘要:
A signal conversion recording method applies a signal recording method whereby a video signal converted to a frame rate greater than the frame rate of the signal source by repeating particular fields plural times is converted to an intermediate signal having a frame rate substantially equal to the frame rate of the original signal source by deleting these repeated redundant fields. This intermediate signal is compression coded to obtain the recording signal, and the recording signal is recorded to a recording medium together with a repeat first field flag RFF declaring whether a field was deleted, and a top field first flag TFF declaring which of the two fields in the each of the resulting frames is first on the time-base, wherein when plural logical recording periods are provided on a single recording medium, said video signal is converted to the recording signal so that said flags hold particular values at the start and end of each recording period.
摘要:
An apparatus for recording and/or reproducing a video signal as a moving image or a still image. A moving image may be recorded in a first (YCrCb) recording mode wherein a luminance signal Y and color difference signals (R-Y) and (R-B) corresponding thereto are recorded. A still image may be recorded in a second (RGB) recording mode wherein three primary color signals corresponding thereto are recorded. In the RGB recording mode, the amount of information of each of the three primary color signals may be set to at least the amount of information of the luminance signal Y of the YCrCb recording mode such that, upon the reproduction thereof, a reproduced still image having a relatively high resolution is obtained.
摘要:
In a digital video tape recording and/or reproducing apparatus including a pair of rotary magnetic heads having a predetermined head width and gaps with mutually different azimuth angles which helically scan a magnetic tape as the tape is advanced in order to reproduce digital video signals that have been previously azimuth-recorded in oblique tracks on the tape, there is a tape transport that can transport the tape either at a standard speed or at a non-standard speed. If the tracks recorded on the video tape have a track width equal to the head width, then the tape is transported for reproduction at the standard speed, whereas, if the track width is different from the head width, the tape is transported at the non-standard speed. For example, if the track width is twice the head width, then the tape is transported at twice the standard speed. On the other hand, in another embodiment, when the track width is half of the head width, the tape is transported at a non-standard speed that is one-half the standard speed.
摘要:
A signal recording apparatus for recording a TV signal in which an audio signal such as a MUSE signal and a video signal are multiplexed in a time sharing manner in units of a given period of time, is arranged to code these video and audio signals alike, to dispersively allocate a discretely separated audio signal within the video signal, to provide symbols other than the symbols of the audio and video signals within each synchronizing block for the purpose of permitting the use of other video signal recording apparatuses. The arrangement permits simplification and high-quality of the apparatus for recording the signals of this kind and thus contributes to the popularization of the apparatus.
摘要:
Finite audio and video signals are subjected to some digitalizing encoding format and converted into blocks of audio and video words, respectively. For transmission of these blocks via a compact disc, the words are arranged in packets. Each packet has a packet header and a data field. Such a data field comprises either only audio words or only video words. The packet heater indicates whether the associated data field comprises audio or video words. In order to transmit only changes in the picture in the case of, inter alia, quasi-stationary pictures, each block of video words is divided into a number of sub-blocks and an operational code is added to the beginning of each sub-block. This defines, inter alia, picture elements and the sub-block itself gives video words for these pictures elements.
摘要:
A disc record is disclosed wherein information is stored in radially spaced-apart track turns, each track turn having microscopic pits occurring at varying rates representing the waveform of signals. The signals comprise a plurality of channels of digital audio data words, a plurality of channels of digital computer-control data bits multiplexed in series with the digital audio data words, the audio data words and the computer-control data bits being organized into a sequence of first blocks, the volume of information contained in the computer-control data bits of each of the first blocks being much smaller than the volume of information contained in the audio data words of each of the first blocks. The recorded signals further include a plurality of first sync codes each identifying each of the first blocks, a sequence of second sync codes identifying each sequence of the first blocks, a plurality of channels of time-division multiplexed digital still-picture video data words. The audio data words, computer-control data bits and still-picture video data words are organized into a sequence of time-division multiplexed, second blocks which are identified by a third sync code.