摘要:
A data reproduction apparatus and a data reproduction method can alleviate the workload of a special processing operation of fast forward or reverse data reproduction and improve the data access speed for fast reproduction of data. The data reproduction apparatus comprises an optical pickup 2 for reproducing data from an optical disk 1, a sector detector 4 for detecting a first piece of data information indicating if a data is to be output as signal or not, a ring buffer memory 6 for storing data, an error correction circuit 7 for correcting errors in the data to be output as signal as indicated by the first piece of data information out of the stored data, a stream detector 10 for detecting a second piece of data information indicating the data to be out as signal out of the data corrected for errors, decoders 13, 16 for decoding the data corrected for errors and stored in the ring buffer memory 6 as signal to be reproduced and a system controller 22 for control the data to be decoded and the data not to be decoded by referring to the first piece of data information and the second piece of data information detected by a second data information detection means.
摘要:
The objectives of the present invention are to reduce the throughput required for a rapid reproduction or other special types of reproduction and to improve also the data access speed at the time of a rapid reproduction. In order to achieve these objectives, the system controller 19 controls so that the address information of the MPEG data reproduced by a pickup 2 may be used to create the first reproduction control information at a sector detection circuit 4, that the second reproduction control information corresponding to the starting point of pictures contained in the MPEG data destined to be reproduction signals by the first reproduction control signal and subjected to an error correction in an error correction circuit 7 may be created in a stream detection circuit 9, and that some MPEG data out of the entire MPEG data may be outputted for a rapid reproduction by referring to the second reproduction control information, and through these steps, the interval of reproducing I pictures in a rapid reproduction by using for example only I pictures is reduced and a smooth reproduction is achieved.
摘要:
Conventionally, a particular countermeasure has been taken for each of the error factors. That is, each error requires a circuit and the like for carrying out the countermeasure, which leads to an increase size of the entire circuit. The present invention includes a controller 14 which resets a system time clock STC serving as the system reference time with a time management information PTM in a video decoder 7. This reset time is compared to a time management information PTM or DTM of the video decoder 7 or an audio decoder 11. According to a result of the comparison, the synchronization lag between the video signal and the audio signal is controlled.
摘要:
A DVD reproduction apparatus includes a video decoder capable of outputting smooth video data during forward or backward high-speed reproduction. The video decoder is intermittently supplied with data in VOBU (Video Object Unit) units. According to control by a controller, the decoder outputs the decoded I pictures or P pictures from a memory having a capacity of three or more pictures. In a case of forward reproduction, the pictures are outputted according to the time axis, and in a case of backward reproduction, the pictures are outputted in the opposite direction of the decoding order. Moreover, the decoder counts a VOBU passing time through a demultiplexer provided at a preceding stage and outputs respective pictures at averaged intervals. That is, because three pictures are outputted for each VOBU, pictures are outputted at an interval of the averaged VOBU passing time multiplied by ⅓.
摘要:
A single-chip application specific integrated circuit provides autonomous management of playback of digital video and audio. The chip includes a digital video decoder and output system, and a central processing unit controlling said digital video decoder and output system. The central processing unit receives commands to establish a current playback state for management of playback of digital video and audio by said digital video decoder and output system, and responds to a video field synchronization signal and a current playback state, without external instruction, to determine whether to display digital video, whether to decode digital video for display, whether to repeat display of previously decoded digital video, and whether to skip over digital video prior to decoding digital video for output. By delivering commands to the central processing unit, the application specific integrated circuit can be caused to transition between playback states to provide desired playback of said digital video and audio.
摘要:
A static apparatus includes an iron core which includes a plurality of magnetic plates stacked in one direction and in which a shaft portion having a main surface and a side surface is formed, and a coil wound around the shaft portion. Slits extending in an axial direction of the shaft portion are formed in at least a surface layer magnetic plate constituting the main surface, of the plurality of magnetic plates. Some of the slits are formed in the main surface, at an end portion close to the side surface, at a predetermined formation density. The formation density of the slits is highest at the predetermined formation density, and is reduced as at least one of a minimum distance from the side surface within the main surface and a distance from the main surface on a side close to the slits in the stacking direction is increased.
摘要:
A foreign matters trap in which a metallic corrugated plate is arranged in a ground tank so that a line connecting portions of the corrugated plate having the same height is made parallel to a central axis of the ground tank, a metallic round rod is mounted to an corrugated end of the corrugated plate, the corrugated plate and the metallic round rod are connected electrically to each other, and a surface of the corrugated plate is covered by an insulating material. The foreign matters trap is capable of surely trapping metallic foreign matters in a gas insulated electric apparatus and suppressing concentration of an electric field to become excellent in voltage endurance and which can be readily mounted in a ground tank.
摘要:
A static apparatus includes an iron core which includes a plurality of magnetic plates stacked in one direction and in which a shaft portion having a main surface and a side surface is formed, and a coil wound around the shaft portion. Slits extending in an axial direction of the shaft portion are formed in at least a surface layer magnetic plate constituting the main surface, of the plurality of magnetic plates. Some of the slits are formed in the main surface, at an end portion close to the side surface, at a predetermined formation density. The formation density of the slits is highest at the predetermined formation density, and is reduced as at least one of a minimum distance from the side surface within the main surface and a distance from the main surface on a side close to the slits in the stacking direction is increased.
摘要:
A gas-insulated switchgear includes a fixed-side electrode having a tubular fixed-side-conducting contact and a fixed-side shield for housing the fixed-side-conducting contact, and a movable-side electrode having a movable conductor driven by a driving unit to be connected to and separated from the fixed-side-conducting contact, facing each other in a container filled with an insulating gas. The switchgear includes a fixed-side-arc shield in the form of a circular plate, which is made of an arc-resistant member and has an opening of a diameter larger than the outer diameter of the movable conductor, the opening being formed on the side of the fixed-side shield facing the movable-side electrode. The fixed-side-arc shield is formed into a thin plate so as to cause an arc current to flow outward in a radial direction during contact parting of the fixed-side-conducting contact and the movable conductor to generate magnetic flux on a surface thereof in a circumferential direction.
摘要:
A light emitting device comprises: an LED chip having a quantum well structure and a light emitting layer made of a gallium nitride compound semiconductor; a first transparent material covering the LED chip; a second transparent material for protecting the LED chip and the first transparent material; and a phosphor for absorbing a part of the light from the LED chip and emitting a light having a wavelength different from the light from the LED chip; wherein the phosphor is included in second transparent material, and the light from the LED chip and the light from said phosphor are mixed to make a white light.