摘要:
Provided is a digital video recording system which can properly maintain a corresponding relationship between recorded data in two different kinds of formats which are generated from the same inputted video-audio data, even if those data are managed separately. In a case where the first file is generated as a main material file with a high resolution, and the second file is generated as a low-bitrate audio-video (AV) data file (204) with a low resolution, a CLIP-UMID (309) which is identification information unique to the first file is stored in a skip box (304) in the low-bitrate AV data file (204).
摘要:
Provided is a digital video recording system which can properly maintain a corresponding relationship between recorded data in two different kinds of formats which are generated from the same inputted video-audio data, even if those data are managed separately. In a case where the first file is generated as a main material file with a high resolution, and the second file is generated as a low-bitrate audio-video (AV) data file (204) with a low resolution, a CLIP-UMID (309) which is identification information unique to the first file is stored in a skip box (304) in the low-bitrate AV data file (204).
摘要:
In a digital signal recording and reproducing apparatus, a signal obtained by multiplexing an audio signal on a bit rate reduction encoded video signal is delivered as a transmission signal. The transmission signal is multiplexed with a data showing its content, such as a copy number of times data and an edit number of times data. Depending on the state of reproduction at a reproducing side apparatus, which is a source side of transmission, a control data for controlling a recording side apparatus, which is a destination of transmission, is also multiplexed.
摘要:
In an encoder for selectively receiving, blocking and coding by orthogonal transformation an image A with a screen aspect ratio which is greater than 4:3 or an image B with a screen aspect ratio of 4:3, when the image A is entered, it is divided into a basic screen with an aspect ratio of 4:3 corresponding to a central portion of a screen and an additional screen other than the basic screen. Coding is controlled so that a sum of coded data quantity of a specified number of blocks m of orthogonal transformation of the basic screen and a specified number of blocks n of orthogonal transformation of the additional screen is within a specified data quantity x. When the image B is entered, the coding is controlled so that a coded data quantity of the same number of blocks of orthogonal transformation as the specified number of blocks of orthogonal transformation m of the basic screen of the image A is within the same data quantity as the specified data quantity x.
摘要:
The image recording system is a system configured of first and second image recording apparatuses. The first image recording apparatus includes a device ID obtainment unit, a time information obtainment unit, a first channel information input unit, an identification information creation unit, a first image input unit, a first identification information addition unit, a first image recording unit, and an identification information sending unit. The second image recording apparatus includes an identification information receiving unit, a second channel information input unit, an identification information change unit, a second image input unit, a second identification information addition unit, and a second image recording unit.
摘要:
In a digital signal recording and reproducing apparatus, a signal obtained by multiplexing an audio signal on a bit rate reduction encoded video signal is delivered as a transmission signal. The transmission signal is multiplexed with a data showing its content, such as a copy number of times data and an edit number of times data. Depending on the state of reproduction at a reproducing side apparatus, which is a source side of transmission, a control data for controlling a recording side apparatus, which is a destination of transmission is also multiplexed.
摘要:
In a video signal digital magnetic recording and/or reproducing apparatus, an input image data array is rearranged into a different data array appropriate for data compression and then subjected to a data compression by variable length coding. The resulting data are rearranged after the data compression and then recorded sequentially onto a video track of a magnetic tape in the same order as that in the frame. In a high-speed playback mode, only the lower frequency component data is decoded every sync block, so that the data reproduced from one video track adjoin each other in the playback picture on the screen.
摘要:
In a digital video signal recording/reproducing apparatus for recording digital VCR video and audio signals by using a rotary cylinder, for a video signal with a frame frequency fN of 30 Hz or 29.97 Hz, the rotating frequency of the cylinder is set to 2.5 times fN. On the other hand, for a signal with a frame frequency fP of 25 Hz, the rotating frequency of the cylinder is set to 3.0 times fP. As a result, as long as the cylinder diameters are identical, the relative speed of the tape and the head is the same for video signals of either frame frequency fN or fP.
摘要:
A signal processing apparatus for use in a digital video signal reproducing apparatus for reproducing digital signal presented in sync blocks is disclosed. Each sync block has a fixed area for low frequency data and five subsequent sync blocks define a sharing group for sharing high frequency data. The signal processing apparatus includes an inner and outer correction circuit for correcting errors in the sync blocks. An error flag is provided to a sync block which still has an error remaining after the processing in the correction circuit. A memory is provided for storing errorless sync blocks of one frame. A substitution switch is provided for passing the errorless sync blocks, but substituting a sync block stored in the memory for a sync block still having some errors. Five sync blocks produced from the substitution switch are held in a delay. When no substitute sync block is detected in the five sync blocks in the delay, the data in the five sync blocks are decoded by a bit rate reduction decoder. But, when one to four substitute sync block is detected in the five sync blocks in the delay, only the low frequency data of the five sync blocks in the fixed area are decoded by the bit rate reduction decoder.
摘要:
An information recording apparatus implements the orthogonal transformation for the input signal on a block-by-block basis, separates each variable-length coded word into a fixed part and separate part individually, records the fixed part into a record block which is established for each block of orthogonal component by starting from the beginning and ending at the prescribed position of the record block, and records coded words of the separate part into remaining portions of record blocks.