摘要:
Only monitor side is caused to have decoding unit portion for bit stream, and reading unit portion for bit stream, decoding unit portion for bit stream and recording unit portion for bit stream are linked by digital network. Reproducing unit is caused to have a function to reproduce bit stream as it is, and recording unit is caused to have a function to record bit stream as it is. Bit stream reproducing unit and bit stream decoding unit of the monitor side, and such reproducing unit and bit stream recording unit are linked by high speed digital network. Thus, in the case where there is constructed a moving picture reproducing system such that a plurality of moving picture reproducing units are connected to one moving picture display unit to utilize source desired to see by selection of switch, cost can be reduced and degradation of the picture quality can be prevented.
摘要:
Recording unit is operative so that, in the case of carrying out high speed reproduction, switch is switched by high speed reproduction control signal inputted from the external, and a signal read out from the recording unit is inputted to VLD and formatter. High speed reproduction control signal is inputted to recording unit, switch and counter. Recording unit reproduces and outputs predetermined data in accordance with high speed reproduction control signal. At VLD, variable length encoding of MPEG is released, and syntax analysis is carried out. Counter counts the number of frames to be transmitted. Moreover, counter outputs temporal.sub.-- reference in accordance with reproduction speed indicated by high speed reproduction control signal. Header converter rewrites temporal.sub.-- reference in picture header in accordance with temporal.sub.-- reference outputted from counter. From facts as described above, high speed reproduction of moving picture can be made.
摘要:
An encoder considers a frame representing a picture as comprised of areas. For each area, the encoder decides which of frame-based or field-based orthogonal transformation will be most efficient at reducing spatial redundancy in that area. For each area, the encoder decides which of frame-based or field-based predictive encoding will be most efficient at reducing temporal redundancy in that area. The encoder encodes each area of the picture frame using the most efficient orthogonal transformation technique and using the most efficient predictive encoding technique to produce an encoded signal. A decoder decodes the encoded signal. The encoded signal is recorded on a recording medium, transmitted over a transmission channel, or broadcast.
摘要:
The invention provides a a recording data production apparatus and method, a recording medium reproduction apparatus and method and a recording medium by which interruption of data can be prevented even when reproduction of data is performed in a different order from the order in which the data are recorded. When it is intended to allow reproduction of data in an order of a block A, a block B and a block D or in another order of the block A, a block C and the block D, in order to prevent underflow of data from a buffer memory of a reproduction apparatus, the block B is sectioned into sections B.sub.1 to B.sub.3 and the block C is sectioned into sections C.sub.1 to C.sub.3. Then, the lengths of the sections are set to a predetermined value, and the blocks are arranged in an order of the blocks A, B.sub.1, C.sub.1, B.sub.2, C.sub.3, B.sub.3, C.sub.3 and D. In each section, addresses of a jumping start point and a jumping destination are recorded as control information.
摘要:
Apparatus for deriving from a motion picture film for transfer to a video recording medium a video signal having increased vertical resolution for display using progressive scanning. In the apparatus, a deriving system derives the video signal from the motion picture film; a flag signal generating circuit generates a flag signal indicating that the video signal is for display using progressive scanning; and a recording system records the video signal and the flag signal in the recording medium. In a method of deriving from an interlaced high-definition video signal an interlaced standard-definition video signal having increased vertical resolution, the interlaced high-definition video signal is converted into a progressive high-definition video signal. The number of pixels in the progressive high-definition video signal is reduced to provide a progressive standard-definition video signal, which is converted into the interlaced standard-definition video signal. An apparatus for reproducing a video signal recorded on a recording medium includes a system for reproducing the video signal from the recording medium, and a circuit for extracting from the reproduced video signal a flag signal indicating a display scanning mode for the video signal. A display apparatus includes a circuit for receiving a flag signal indicating a display scanning mode for the video signal, and for generating a control signal; and a circuit, responsive to the control signal, for displaying the video signal in the display scanning mode.
摘要:
Digital video data encoder and decoder operate to enable the low and high speed reproduction of variable rate encoded digital video data by reproducing and decoding intraframe encoded frames that are identified by previously reproduced intraframe encoded frames. In the encoder, digital video data is variable rate encoded, for example, intraframe and interframe encoded, entry points (i.e., beginning positions) of selected encoded video data are identified and which represent video frames that occur at predetermined intervals of time (e.g., 1, 2 and 4 seconds) in the video picture. Entry point data that identify these positions are generated and added to the encoded video data before the video data is recorded on a record medium. When the encoded data is reproduced from the record medium, the entry point data is extracted therefrom and stored, and a successive intraframe encoded frame identified by the extracted entry point data is reproduced and decoded. The invention further provides for a record medium having thereon the encoded digital video data, and also provides for an encoder and corresponding decoder which encode and decode, respectively, digital still image and audio data in which entry points refer to each of the still images and also to particular intervals of time of the audio data.
摘要:
An encoder considers a frame representing a picture as comprised of areas. For each area, the encoder decides which of frame-based or field-based orthogonal transformation will be most efficient at reducing spatial redundancy in that area. For each area, the encoder decides which of frame-based or field-based predictive encoding will be most efficient at reducing temporal redundancy in that area. The encoder encodes each area of the picture frame using the most efficient orthogonal transformation technique and using the most efficient predictive encoding technique to produce an encoded signal. A decoder decodes the encoded signal. The encoded signal is recorded on a recording medium, transmitted over a transmission channel, or broadcast.
摘要:
The invention provides a a recording data production apparatus and method, a recording medium reproduction apparatus and method and a recording medium by which interruption of data can be prevented even when reproduction of data is performed in a different order from the order in which the data are recorded. When it is intended to allow reproduction of data in an order of a block A, a block B and a block D or in another order of the block A, a block C and the block D, in order to prevent underflow of data from a buffer memory of a reproduction apparatus, the block B is sectioned into sections B.sub.1 to B.sub.3 and the block C is sectioned into sections C.sub.1 to C.sub.3. Then, the lengths of the sections are set to a predetermined value, and the blocks are arranged in an order of the blocks A, B.sub.1, C.sub.1, B.sub.2, C.sub.3, B.sub.3, C.sub.3 and D. In each section, addresses of a jumping start point and a jumping destination are recorded as control information.
摘要:
An encoder considers a frame representing a picture as comprised of areas. For each area, the encoder decides which of frame-based or field-based orthogonal transformation will be most efficient at reducing spatial redundancy in that area. For each area, the encoder decides which of frame-based or field-based predictive encoding will be most efficient at reducing temporal redundancy in that area. The encoder encodes each area of the picture frame using the most efficient orthogonal transformation technique and using the most efficient predictive encoding technique to produce an encoded signal. A decoder decodes the encoded signal. The encoded signal is recorded on a recording medium, transmitted over a transmission channel, or broadcast.
摘要:
An information record medium from which only necessary record information can be reproduced as well as an editing apparatus and a reproducing apparatus designed to edit and reproduce the information record medium, respectively, to allow such selective reproduction of necessary record information. Video information, audio information, simple edition information and so forth are recorded in a time division multiplexed condition for each block on each track of the record medium. The simple edition information includes a header, a length or time period and edition data. The edition data includes a jump command, a track end command, a temporary stop command, a fade-in/fade-out command, a repeat command, an insert command, a composition command or the like.