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    • 51. 发明专利
    • Audio signal transmission device, audio signal reception device and audio signal transmission system
    • 音频信号传输设备,音频信号接收设备和音频信号传输系统
    • JP2011232776A
    • 2011-11-17
    • JP2011164643
    • 2011-07-27
    • Victor Co Of Japan Ltd日本ビクター株式会社
    • FUCHIGAMI NORIHIKOUENO SHOJITANAKA YOSHIAKI
    • G10L19/00G11B20/10H03M7/36
    • PROBLEM TO BE SOLVED: To transmit audio data with improved compression rate by a predictive encoding of a multi-channel audio signal.SOLUTION: An addition circuit 1a computes a sum signal (L+R) of stereo 2 channel signals L and R. A subtraction circuit 1b calculates a difference signal (L-R). Differential arithmetic circuits 11D1 and 11D2 compute differences Δ(L+R) and Δ(L-R) of the sum signals and difference signals between current and previous times. Predictive coding circuits (15D1, 15D2, 16D1, and 16D2) compute a plurality of predictive values of the differences Δ(L+R) and Δ(L-R), compute respective predictive residuals of the plurality of predictive values and the differences Δ(L+R) and Δ(L-R), packetize predictive encoded data by selecting, for example, a minimum predictive residual, and then transmit the predictive encoded data through a prescribed communication line.
    • 要解决的问题:通过多声道音频信号的预测编码来以改进的压缩率传输音频数据。 解决方案:加法电路1a计算立体声2声道信号L和R的和信号(L + R)。减法电路1b计算差信号(L-R)。 差分运算电路11D1和11D2计算和信号之间的差Δ(L + R)和Δ(L-R)和当前和之前的时间之间的差信号。 预测编码电路(15D1,15D2,16D1和16D2)计算差Δ(L + R)和Δ(LR)的多个预测值,计算多个预测值的各个预测残差和差Δ(L + R)和Δ(LR),通过选择例如最小预测残差来分组预测编码数据,然后通过规定的通信线路发送预测编码数据。 版权所有(C)2012,JPO&INPIT
    • 56. 发明专利
    • Method of compressing data for image processing, and compressor and imaging apparatus including the same
    • 压缩图像处理数据的方法,包括其中的压缩机和成像装置
    • JP2011182040A
    • 2011-09-15
    • JP2010041921
    • 2010-02-26
    • Ricoh Co Ltd株式会社リコー
    • MARUYAMA TAKESHI
    • H04N1/41H03M7/36
    • PROBLEM TO BE SOLVED: To achieve sampling equal to that of a prior art by reducing a capacity of data for image processing through compression and decompression of the data for use.
      SOLUTION: When an image deformation unit 7 outputs X-coordinates data and Y-coordinates data that are criteria for determining addresses read from an image buffer unit 4 by a raster image generation unit 5 in synchronization with a vertical synchronization signal and a horizontal synchronization signal, the image deformation unit 7 reads data recorded in a lookup table 8 and performs linear interpolation to the read vertex data, thus determining correspondence between a sensor image of the image buffer unit 4 and an output image at a pixel level. In the vertex data of the lookup table 8 used for the determination, a differential value in a horizontal direction of the vertex data, and a differential value in a vertical direction are calculated each, and lookup data compressed by calculating a difference are stored. The stored lookup data are decompressed and used, and a sampling having an interval narrower than before regardless of the same data capacity, is then achieved to improve an appearance quality of an image.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:通过减少用于通过压缩和解压缩使用的数据进行图像处理的数据的容量来实现与现有技术相同的采样。 解决方案:当图像变形单元7与垂直同步信号同步地输出由光栅图像生成单元5确定从图像缓冲单元4读取的地址的X坐标数据和Y坐标数据时, 水平同步信号,图像变形单元7读取记录在查找表8中的数据,并对读取的顶点数据进行线性插值,从而确定图像缓冲单元4的传感器图像与像素级别的输出图像之间的对应关系。 在用于确定的查找表8的顶点数据中,分别计算顶点数据的水平方向的差分值和垂直方向上的微分值,并且存储通过计算差分压缩的查找数据。 存储的查找数据被解压缩和使用,并且获得具有比之前更窄的间隔的采样,而不管相同的数据容量如何,以改善图像的外观质量。 版权所有(C)2011,JPO&INPIT