摘要:
To improve the convenience of a record medium and allow a record process and reproduction process to be more easily performed than before. When a clip edit list update process 121 that updates video data and audio data recorded on a disc 32 is executed, an index file management section 72 manages and updates an index file held in an index file hold section 51 as the video data and audio data are updated. At this point, a search section 92 searches disc internal IDs assigned to clips or edit lists contained in the index file for the maximum value. A disc internal ID generation section 91 generates a disc internal ID according to the maximum value. An index file management section 72 updates the index file with the disc internal ID generated by the disc internal ID generation section 91.
摘要:
To allow the determination of whether data can be reproduced to be easily performed. When a plurality of clips generated by a photographing process are connected as an edit, an edit list management section 15 identifies encoding systems of a plurality of clips (video files) to be connected and writes the identified encoding systems to an edit list file that manages an edited result. An optical disc 30 on which a clip, an edit list file, and so forth have been recorded is loaded into another reproduction apparatus. When a command that causes an edited result recorded on the optical disc 30 to be reproduced is input to the other reproduction apparatus, the reproduction apparatus reads encoding systems written in the edit list file and determines whether the encoding systems are systems for which that the reproduction apparatus can decode data. In this manner, the reproduction apparatus determines whether it can reproduce the edited result. The present invention can be applied to an edit apparatus that edits for example pictures and so forth.
摘要:
The recording apparatus of the present invention includes: a file generating section for receiving video data and audio data and generating a video data file and an audio data file; a dividing section for dividing the video data file into a plurality of video data elements and dividing the audio data file into a plurality of audio data elements, an arranging section for arranging data such that the video data elements and the audio data elements are recorded within a predetermined recording unit; and a recording section for recording the arranged data on an information recording medium.
摘要:
In order to perform simultaneous recording of a plurality of pieces of real time data, a large capacity of buffer memories were required. In addition, it was difficult to reproduce data which was recorded by a different apparatus. The present invention has an objective of providing an information recording medium, a simultaneous recording method, and an information recording and reproduction apparatus which guarantee simultaneous recording. The simultaneous recording is guaranteed by reproducing data in each of areas having at least a minimum size fulfilling the simultaneous recording condition which allows for the number of access operations which is twice the number of pieces of real time data to be recorded, and when the data amount in the buffer is empty, switching the current recording operation to another recording operation to continue recording.
摘要:
A progressive scanned signal processing apparatus for inputting progressive scanned image signals and processing them as 420P signals comprises a signal processing means and a storing means in order to prevent the qualities of images of color difference signals from being lowered. A delay time required for carrying out a whole signal processing is expressed by 2×N×F (herein, N>0, N is an integer and F is time necessary for a period of one frame). Accordingly, the delay time necessary for the signal processing is expressed by the frames of even number, so that a main signal can be prevented from being replaced by a sub-signal.
摘要:
A coding apparatus for image compression which includes a transformer that transforms image data into a plurality of transform coefficients arranged in a matrix; a quantizer that quantizes each of the transform coefficients into a coefficient data of a predetermined number of bits; a data divider that divides the coefficient data into a fixed-length data part and a variable-length data part and a variable-length encoder that encodes the variable-length data part into a variable-length code.
摘要:
A recording and reproducing apparatus is capable of editing video signals and audio signals recording additional information data for controlling the reproduction output level. The recording side includes an additional information data generating circuit, a time division multiplexing circuit for time-division multiplexing a video signal data and audio signal data and the additional information data, and a recording head. In independent areas on a recording medium, the video signal data, audio signal data and additional information data are individually recorded. The reproduction side includes a reproduction head, a data separation circuit for separating the video, audio and additional information, an additional information data detecting circuit for producing output level data, and a circuit for controlling the levels of the reproduced video and audio signals depending on the output level data.
摘要:
A video and audio signal recording apparatus for recording video and audio signals on parallel tracks formed on a recording medium, includes: a divider for dividing a video signal into video signal blocks each contained in a unit period which is N times (N=1, 2, . . .) as long as one field period of the video signal; another divider for dividing an audio signal into audio signal blocks each contained in a specific period which is synchronized with the unit period; and a recorder for recording signal contained in each of said video signal and audio signal blocks in each of fully independent areas on the recording medium such that any two of the fully independent areas adjacent to each other in a track width direction are separated from each other by an unrecorded area composed of L unrecorded consecutive tracks (L=1, 2, . . .) and any two of the fully independent areas adjacent to each other in a track length direction are separated from each other by an unrecorded area having a specific length in the track length direction.
摘要:
A magnetic recording and reproducing apparatus for recording and reproducing a video digital signal suitable to a narrowed track pitch having two magnetic heads with the same azimuth angle arranged with an overlapped area to reproduce the same track, and a tracking servo executing phase control such that a center of a reproducing track is brought to a center of the overlapped area of the two magnetic heads. Reproduced signals of the two magnetic heads are compared so that the reproduced output of the magnetic head having a good on-track condition is always selected to improve a tracking margin without increasing crosstalk disturbance from adjacent track.
摘要:
A video and audio signal recorder for recording signals on tracks records signals of each editorial unit (e.g. video or audio signals of a field) on a recording medium so as to form a recording area composed of recorded tracks and a guarding area provided between two recording areas, and erases recorded data from a recording area isolated by the guarding area using two kinds of erase heads consisting of: a first erase head having a track width which is twice as wide as the track width and movable in a track length direction so as to track the full width of the single track forming the audio record area and a half width of the non-recorded track in each of the guarding areas adjacent to the audio record area at opposite sides of the audio record area for erasing the audio samples recorded in the audio record area; and a second erase head having a width which is n times as wide as said specific track width (n is an integer larger than two), and movable in the track length direction so as to trace the full width of each of specific consecutive (n-1) tracks in the video record area and a half width of each of two tracks adjacent to the specific consecutive (n-1) tracks at opposite sides of the specific consecutive (n-1) tracks for erasing the video samples recorded in the video record area.