摘要:
In an encoding apparatus or an encoding method, motion-image data is input, an encoding parameter is output such that a predetermined number of codes are used for encoding the input motion-image data in units of predetermined sizes, the output encoding parameter is stored in a storage medium, and the input motion-image data is encoded by adaptively selecting the output encoding parameter or the encoding parameter stored in the storage medium.
摘要:
An image encoding apparatus which encodes picture data is provided. The apparatus comprises an encoding unit configured to encode a picture to be encoded; a decoding unit configured to decode the encoded picture; an SN ratio calculation unit configured to calculate an SN ratio using the picture to be encoded and a decoding result of the decoding unit; a setting unit configured to set a target SN ratio serving as an index of the SN ratio; a bitrate control unit configured to control a bitrate of the picture to be encoded based on the target SN ratio; and a motion detection unit configured to detect motion information between the picture to be encoded and another picture, wherein the bitrate control unit controls the bitrate based on the motion information, and a difference between the SN ratio and the target SN ratio.
摘要:
An encoding control apparatus is disclosed that includes a variance calculation unit configured to calculate a variance of an encoding target macroblock; a sum-of-absolute-difference calculation unit configured to calculate a sum of absolute differences between the encoding target macroblock and a reference macroblock; a setting unit configured to set, based on the variance and the sum of absolute differences, a standard for determining whether to skip encoding of the encoding target macroblock; a prediction unit configured to perform motion compensation prediction on the encoding target macroblock to obtain a motion-compensated prediction value; and a determination unit configured to determine whether to skip encoding of the encoding target macroblock by comparing the motion-compensated prediction value with the standard. Related apparatuses and methods are also disclosed.
摘要:
The present invention provides for an information recording-and-reproducing method and apparatus. At least one play-list file which stores information used for coupling at least two files to each other and for reproducing the files is generated, wherein the at least two files are coupled to each other at the heads and/or midpoints thereof. A first shortcut file is generated for at least one file included in the play-list file, and a second shortcut file is generated for the play-list file. The first shortcut file and the second shortcut file are generated in one and the same folder.
摘要:
In an encoding apparatus or an encoding method, motion-image data is input, an encoding parameter is output such that a predetermined number of codes are used for encoding the input motion-image data in units of predetermined sizes, the output encoding parameter is stored in a storage medium, and the input motion-image data is encoded by adaptively selecting the output encoding parameter or the encoding parameter stored in the storage medium.
摘要:
An apparatus and method for processing information, including an error-correcting coding device for encoding information data into at least one error-correcting code, the error-correcting code containing the information data and a parity check code, and an encryption device for encrypting at least a portion of the information data and at least a portion of the parity check code contained in the error-correcting code. In this manner, unauthorized copying of the digital data is prevented and the copyright on the data is protected. In one embodiment, unauthorized users can partially view image data that is not selected for encryption by an encryption selector.
摘要:
An image processing apparatus in which an image signal is divided into blocks each comprising a plurality of pixels and a quantization and a variable length encoding are executed so that a code amount of a plurality of blocks lies within a certain range. As a plurality of blocks, the position of the block which is selected at the nth order approaches the periphery of a picture screen with an increase in value of (n).
摘要:
A motion image and a still image are selectively recorded onto a recording medium. When the recording of the still image is instructed during the recording of the motion image, one picture plane in the motion image is extracted and stored into a memory. After completion of the recording of the motion image, the image data of one picture plane stored in the memory is repeatedly read out and recorded as a still image. A continuity of motion images to be reproduced is held and a reproduction image of a high picture quality is obtained.
摘要:
First and second digital data to which a code to correct errors was added are inputted. For a certain period of time, processes to detect errors in the first and second digital data are executed in accordance with the order of the first digital data and the second digital data. In this period of time, on the basis of the processing results, processes to correct the errors in the first and second digital data are executed in accordance with the order of the second digital data and the first digital data. Thus, the error detecting processes of the digital data that is inputted on a predetermined unit basis can be executed in parallel and an error correcting process in which a circuit scale is small and costs are low can be realized.
摘要:
Disclosed is a novel .beta.-lactam compound, a 7-substituted-2-oxa-7-azabicyclo[3.2.0]heptan-6-one represented by the general formula ##STR1## in which R is an alkyl, cycloalkyl, aryl, halogen-substituted aryl or alkaryl group, having usefulness as an intermediate for the synthesis of various biologically active compounds. The compound can be prepared by the reaction of an isocyanate compound RNCO, R being the same as above, and 2,3-dihydrofuran, preferably, under pressurization up to 2000 atmospheres or higher.