摘要:
A compressed video signal, produced by a compression and coding process such as the MPEG system , is recorded in predetermined time unit blocks (GOP block) on a disk. In the prior art, dummy data is added to ensure that each block occupies the same length on the disc. According to the invention, the quantity of data DQ in each block D1-D6, and hence the length of the block GOP on the disk is recorded, and dummy data can be omitted. A reproducing apparatus detects the recorded data quantity DQ and adjusts the disc velocity so that the time taken to read each block GOP is the same.
摘要:
The apparatus sequentially stores modulated compressed video signals in a memory (41), and reads information from the memory (41) in such a way as to reduce the information reading speed when the remaining memory space becomes smaller than a predetermined value and to increase the information reading speed when the remaining memory space becomes greater than the predetermined value. The apparatus records the read information on a recording disk (300) at a recording linear velocity according to the information reading speed. This structure permits compressed video signals excluding invalid data to be continuously recorded on the recording disk (300) at a variable transfer rate according to the producing rate of the compressed video signals, thus ensuring a high recording efficiency.
摘要:
An apparatus for recording information on a recordable optical disc (1) by applying a light beam on the surface thereof, the disc includes a first recording area on which information is recorded and reproduced while the disc is rotated at a first linear velocity (CLV₁); and a second recording area on which information is recorded and reproduced while the disc is rotated at a second linear velocity (CLV₂). The first recording area includes a test recording area. The apparatus includes recording power determining unit for determining first optimum recording power (P₁) for recording information on the first area by a test recording utilizing the test recording area, and for determining second optimum recording power (P₂) for recording information on the second area by multiplying the first optimum recording power by a predetermined constant (K).
摘要:
A graphics decoder which stores color number data of each pixel of the display screen (33), which is acquired from a subcode signal, sequentially reads out the color number data to produce a graphics RGB signal referring to a color look-up table, and supplies the graphics RGB signal to a CRT display (33). When a graphics command acquired from the subcode signal is a screen-scroll command, scroll data is obtained from pointer data included in that scroll command, and that scroll data is output at a timing synchronous with a horizontal sync signal or vertical sync signal to set the read address of the display memory. When the graphics command is a color look-up table write command, the color look-up table is updated at a timing synchronous with the first horizontal sync signal or vertical sync signal after the generation of that write command.
摘要:
An information recording/reproducing system in which, at the time of information recording, an input digital video signal is divided into a plurality of frequency band components, and information portion data consisting of a predetermined number of subblock data (subblock 0, subblock 1, etc) with each piece of the digital video signal data per frequency band taken as one subblock data and head portion data (DL0, DL1 etc) including identification data blocks indicating frequency bands for the respective subblocks are recorded as one block on a recording medium. At the time of reproduction, individual pieces of identification data in a header portion are discriminated from the digital video signal, picked up from the recording medium, block by block, and the digital video signal of each subblock is selectively extracted in accordance with the identification data, and the bands of the extracted digital video signals are combined to thereby generate reproduced digital video signals.
摘要:
An information recording/reproducing system in which, at the time of information recording, an input digital video signal is divided into a plurality of frequency band components, and information portion data consisting of a predetermined number of subblock data (subblock 0, subblock 1, etc) with each piece of the digital video signal data per frequency band taken as one subblock data and head portion data (DL0, DL1 etc) including identification data blocks indicating frequency bands for the respective subblocks are recorded as one block on a recording medium. At the time of reproduction, individual pieces of identification data in a header portion are discriminated from the digital video signal, picked up from the recording medium, block by block, and the digital video signal of each subblock is selectively extracted in accordance with the identification data, and the bands of the extracted digital video signals are combined to thereby generate reproduced digital video signals.
摘要:
A recording medium on which a digital information signal is to be recorded in the form of blocks, each block comprising an information portion consisting of a plurality of subblocks, and a header portion including a plurality of identification data blocks located preceding the information portion and respectively associated with the subblocks, and a system for playing the recording medium to reproduce recorded information therefrom, are disclosed.
摘要:
An apparatus for applying a coating to a surface of a substrate (2) comprises a feeder (4) for feeding the coating to a predetermined position, a roller (3) for applying the coating onto the surface of the substrate (2) and a doctor (10) for regulating the thickness of the coating, the doctor (10) having a rake surface (10d), a facing surface (10c) and a flank surface (10b), forming an escape angle (ϑ₂). The escape angle (ϑ₂), defined between a tangential plane (13) with which the roller (3) is contacted and an extension plane (11) of the flank surface (10b) at an intersection (12) defined between the extension plane (11) and the roller (3), is an obtuse angle.
摘要:
In on-screen-display (OSD), characters and graphic images selected by an operator from predetermined characters and graphic images are reproduced on a display (14a) such as a liquid crystal display. A font code memory (24) is provided for storing a font code (Da) of a character or a graphic image input by the operator. A graphic font detector (40) is provided for detecting whether the stored font code is a character font or a graphic font. A font data memory (25) stores a plurality of font data (Dc) for reproducing the predetermined characters and the graphic images. Font data (Dc) read from the font data memory (25) are loaded on shift registers (6A) and applied to the display (14a) in order to reproduce the stored font data.