Abstract:
Provided is a moving picture decoding apparatus including: a picture memory (103) that stores previously decoded picture data of a picture including macroblocks and macroblock information described on a macroblock basis, in association therebetween; an error judging unit (104) that judges presence or absence of an error for a current picture to be decoded; a picture data replacing unit (109) that replaces, when an error is present, picture data of the current picture to be decoded with that of a previously decoded picture in the picture memory (103); and a macroblock information replacing unit (113) that replaces macroblock information in association with the current picture to be decoded including an error with macroblock information stored in association with the previously decoded picture, or a macroblock information storage unit (602) that stores information that indicates presence of the error for the current picture to be decoded in association therewith.
Abstract:
Provided is a motion estimation device in which an amount of pixel data transferred from an external frame memory to an internal reference local memory is reduced. By the motion estimation device, it is possible to reduce a memory capacity and a size or processing of a circuit controlling the pixel transfer. In a reference memory control unit and an internal reference memory, a height of a area to be updated is set to L pixels, where L is power of 2, a logical address segments, whose size is suitable for address calculation, are allocated to picture space, and FIFO management is performs. In another application, an assistance memory is added, and another element other than the assistance memory performs the FIFO management for rectangular areas in an image of a conventional width. As a result, the address calculation is simplified, which makes it possible to reduce an embedded circuit for the reference memory control unit and the internal reference memory.
Abstract:
A moving image decoding apparatus which enables reduction in the memory bandwidth and the memory access latency for the motion compensation filter coefficients for use in inter-picture prediction involving motion compensation using variable coefficients includes: a decoding unit (101) which decodes, from a coded stream, a plurality of motion compensation filter coefficients; a memory (109) for holding the motion compensation filter coefficients included in the coded stream; a filter coefficient storage unit (103) for holding at least one of the motion compensation filter coefficients which is required for the motion compensation; a motion compensation unit (107) which performs motion compensation using the required motion compensation filter coefficient held in the filter coefficient storage unit; and a filter coefficient transfer control unit (102) which writes, in the memory, the motion compensation filter coefficients decoded by the decoding unit, and transfers the required motion compensation filter coefficient from the memory to the filter coefficient storage unit, only when the required coefficient is not yet stored therein.
Abstract:
An image decoding device and an image coding device are each capable of using spatial dependence across a boundary between slices to smoothly execute parallel processing. The image decoding device includes: a first decoding unit (801) decoding a block in a first slice; a second decoding unit (802) decoding a block in a second slice; and a first storage unit (811) storing inter-slice neighboring information (i) generated by decoding a boundary block included in the first slice and adjacent to the second slice and (ii) referenced when a boundary neighboring block included in the second slice and adjacent to the boundary block is decoded. The first decoding unit (801) generates the inter-slice neighboring information by decoding the boundary block and stores the generated information into the first storage unit (811). The second decoding unit (802) decodes the boundary neighboring block by reference to the stored inter-slice neighboring information.
Abstract:
An image coding method for improving coding efficiency by using more appropriate probability information is provided. The image coding method includes: a first coding step (S811) of coding a first set of blocks included in a first region sequentially based on first probability information; and a second coding step (S812) of coding a second set of blocks included in a second region sequentially based on second probability information. In the first coding step (S811), the first probability information is updated depending on data of a target block to be coded, after coding the target block and before coding a next target block. In the second coding step (S812), the second probability information is updated depending on the first probability information updated in the first coding step (S811), before coding the first target block.
Abstract:
A power conversion device includes a converter that converts AC power to DC power, a converter controller that controls an output voltage of the converter, an inverter that converts the DC power to AC power at a variable frequency, an inverter controller that controls an output frequency of the inverter, and a current detector that detects an AC current on an input side of the converter. It is configured in such a manner that the inverter controller adjusts a slip frequency of the induction motor in response to a fluctuation of the AC current on the input side of the converter detected by the current detector. It thus becomes possible to suppress a beat current in an output current of the inverter at the occurrence of a load fluctuation as well as a power supply voltage fluctuation.
Abstract:
A flame retardant synthetic fiber and a flame retardant fiber composite that satisfy high flame retardance and high fire resistance, a method for producing the flame retardant synthetic fiber and the flame retardant fiber composite, and a textile product are provided. The flame retardant synthetic fiber of the present invention includes a polymer (1) containing 30 to 70 parts by mass of acrylonitrile, 70 to 30 parts by mass of a halogen-containing vinylidene monomer and/or a halogen-containing vinyl monomer, and 0 to 10 parts by mass of a vinyl-based monomer copolymerizable therewith, based on 100 parts by mass of the polymer, and at least one kind of a metal compound (2) that accelerates a dehalogenation reaction of the polymer (1) during burning and a carbonization reaction of the polymer (1) during burning, wherein the flame retardant synthetic fiber has a shrinkage variation of 45% or less when a temperature is raised from 50° C. to 300° C. under a load of 0.0054 mN/dtex.
Abstract:
A cache device comprises: data memory that includes a plurality of ways for storing a part of data of a main memory; tag memory that includes a plurality of ways, each of which is for storing tag contained in address of data recorded in each way of the data memory; comparison circuit that decides whether tag contained in address to be accessed agrees with the tag recorded in the tag memory or not; next address generation circuit that calculates address to be accessed next time as second address by referring to first address to be accessed at present time; and tag reading control circuit that pre-reads tag corresponding to index of the second address from the tag memory and ceases to read tags hereafter from the tag memory in a case where the tag contained in the second address agrees with the pre-read tag.
Abstract:
To provide a simply-structured image decoding apparatus which appropriately executes parallel decoding processing. The image decoding apparatus includes: a stream segmentation unit (130) which generates plural segment streams by segmenting each of the pictures included in a bit stream into plural MB lines, and assigning each of the plural MB lines to a corresponding one of the plural segment streams to be generated; and plural decoding engines (120) which decode the respective plural segment streams in parallel. In the case where at least two consecutive MB lines in the bit stream have a dependency indicated by a predetermined code word, the stream segmentation unit (130) sets the code word to the segment streams so as to update the dependencies to new dependencies depending on the contexts of MB lines in the respective segment streams.
Abstract:
The object is to provide a method and device to detect internal defect in the weld overlaid portion of erosion resistant material in the border portion between the blade profile and the shroud of a turbine blade with high accuracy by a static test method for an individual turbine blade applying a resultant pressing force, corresponding to centrifugal force and untwisting force of the turbine blade 10 in operation of the turbine, to the shroud 12 with installing the blade root 18 of the turbine blade 10 to the blade root retainer 20 and applying a force in the direction of centrifugal force on the blade root 18 from outside of the blade root retainer 20 to eliminate backlash between the blade root 18 and blade root retainer 20, retaining securely the shroud 12 on the side opposite to the portion which is applied the pressing force, and implementing simulated test of centrifugal stress in the weld-overlaid portion by applying the resultant pressing force, corresponding to centrifugal force and untwisting force of the turbine blade 10 in operation of the turbine, to the shroud 12.