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    • 2. 发明授权
    • Image processing device and image processing method
    • 图像处理装置及图像处理方法
    • US08983215B2
    • 2015-03-17
    • US13991032
    • 2011-11-04
    • Masayuki YamaguchiShinji Shinjo
    • Masayuki YamaguchiShinji Shinjo
    • G06K9/36G06T9/00G09G3/36H04N19/12H04N19/176H04N19/147
    • G06T9/004G09G3/36G09G2300/0452G09G2320/0252G09G2340/02G09G2340/06G09G2340/16H04N19/12H04N19/147H04N19/176
    • An image processing device that reduces influence by a compressibility error of image data generated by a previous frame on output image data is disclosed. The image processing device generates a compressibility error prediction value, based on an input image data, generates substitute image data of the input image data, based on an emergence tendency of the compressibility error, selects the input image data or the substitute image data to set a result as current image data, generates next state image data, compresses the next state image data to generate compressed state image data, stores the compressed state image data in a frame memory, generates the state image data by reading the compressed state image data from the frame memory and decompressing the same, and generates output image data, based on the current image data and the state image data.
    • 公开了一种降低由前一帧对输出图像数据产生的图像数据的压缩性误差的影响的图像处理装置。 图像处理装置基于输入图像数据生成压缩率误差预测值,基于压缩率误差的出现趋势,生成输入图像数据的替代图像数据,选择输入图像数据或替代图像数据, 作为当前图像数据的结果,生成下一个状态图像数据,压缩下一个状态图像数据以生成压缩状态图像数据,将压缩状态图像数据存储在帧存储器中,通过从压缩状态图像数据读取来生成状态图像数据 帧存储器并对其进行解压缩,并且基于当前图像数据和状态图像数据生成输出图像数据。
    • 3. 发明申请
    • IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD
    • 图像处理装置和图像处理方法
    • US20130251277A1
    • 2013-09-26
    • US13991032
    • 2011-11-04
    • Masayuki YamaguchiShinji Shinjo
    • Masayuki YamaguchiShinji Shinjo
    • G06T9/00
    • G06T9/004G09G3/36G09G2300/0452G09G2320/0252G09G2340/02G09G2340/06G09G2340/16H04N19/12H04N19/147H04N19/176
    • An image processing device that reduces influence by a compressibility error of image data generated by a previous frame on output image data is disclosed. The image processing device generates a compressibility error prediction value, based on an input image data, generates substitute image data of the input image data, based on an emergence tendency of the compressibility error, selects the input image data or the substitute image data to set a result as current image data, generates next state image data, compresses the next state image data to generate compressed state image data, stores the compressed state image data in a frame memory, generates the state image data by reading the compressed state image data from the frame memory and decompressing the same, and generates output image data, based on the current image data and the state image data.
    • 公开了一种降低由前一帧对输出图像数据产生的图像数据的压缩性误差的影响的图像处理装置。 图像处理装置基于输入图像数据生成压缩率误差预测值,基于压缩率误差的出现趋势,生成输入图像数据的替代图像数据,选择输入图像数据或替代图像数据, 作为当前图像数据的结果,生成下一个状态图像数据,压缩下一个状态图像数据以生成压缩状态图像数据,将压缩状态图像数据存储在帧存储器中,通过从压缩状态图像数据读取来生成状态图像数据 帧存储器并对其进行解压缩,并且基于当前图像数据和状态图像数据生成输出图像数据。
    • 4. 发明申请
    • IMAGE ENCODING DEVICE AND IMAGE ENCODING METHOD
    • 图像编码设备和图像编码方法
    • US20130251257A1
    • 2013-09-26
    • US13989963
    • 2011-09-26
    • Mitsuhisa OhnishiMasayuki YamaguchiTakahiro Morishita
    • Mitsuhisa OhnishiMasayuki YamaguchiTakahiro Morishita
    • G06T9/00
    • G06T9/00H04N1/64H04N19/103H04N19/146H04N19/15H04N19/169H04N19/182H04N19/50
    • The present invention provides an image encoding device that can balance encoding at a high compression ratio and restoration of a high-quality image by decoding in a short processing time. Compression mode determination means 3 determines a compression mode to be one of DPCM and PCM based on target pixel data inputted from a terminal 21 and predicted data calculated by a predetermined method. For the DPCM, DPCM compression means 5 compresses a difference value between the target pixel data and the predicted data to DPCM encoded data having a predetermined DPCM code length. For the PCM, PCM compression means 7 compresses the target pixel data to PCM encoded data having a PCM code length determined by PCM code length determination means 9. The PCM code length determination means 9 calculates the PCM code length for each piece of target pixel data such that a total of post-encoding code lengths becomes an allowable value or less in a unit of predetermined pixel group among the plurality of pixels. Tag/code output means 13 outputs the encoded data by adding a tag indicating whether the compression mode is the DPCM or the PCM to the encoded data.
    • 本发明提供一种图像编码装置,其可以在短的处理时间内通过解码来平衡高压缩比的编码和高品质图像的恢复。 压缩模式确定装置3基于从终端21输入的目标像素数据和通过预定方法计算出的预测数据,确定压缩模式为DPCM和PCM之一。 对于DPCM,DPCM压缩装置5将目标像素数据和预测数据之间的差值压缩到具有预定DPCM码长度的DPCM编码数据。 对于PCM,PCM压缩装置7将目标像素数据压缩为具有由PCM码长度确定装置9确定的PCM码长度的PCM编码数据。PCM码长度确定装置9计算每个目标像素数据的PCM码长度 使得总共的后编码码长度成为多个像素中的预定像素组的单位的容许值以下。 标签/代码输出装置13通过将指示压缩模式是DPCM或PCM的标签添加到编码数据来输出编码数据。
    • 5. 发明申请
    • IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
    • 图像处理装置和图像处理方法
    • US20130243345A1
    • 2013-09-19
    • US13990908
    • 2011-11-04
    • Yoshitaka SekiMasayuki Yamaguchi
    • Yoshitaka SekiMasayuki Yamaguchi
    • G06T9/00
    • G06T9/00G09G5/393G09G5/395G09G2340/02H04N19/428H04N19/433H04N19/50
    • Provided is an image processing apparatus capable of simultaneous reduction in memory capacity and compressibility error. An output image data generating means 11 generates processed image data based on specific reference data and preprocessed image data. Reference data generating means 5 repeatedly executes an identical processing in one term made up of not less than two consecutive frames. When an object frame is a top frame in the term, restored reference data generated by data expanding means 15 is outputted as data expanding means. When the object frame is a second or subsequent frame in the term, simulated specific reference data is generated based on the restored reference data generated by the data expanding means 15 and preprocessed image data of the object frame, and outputted as specific reference data. When the object frame is a final frame in the term, in addition to the above operation, the reference data is generated based on the specific reference data and preprocessed image data of the object frame, and outputted to the data compressing means 13, to be compressed.
    • 提供了能够同时降低存储容量和压缩性误差的图像处理装置。 输出图像数据产生装置11基于特定参考数据和预处理图像数据生成经处理的图像数据。 参考数据生成装置5在由不少于两个连续帧构成的一个项中重复执行相同的处理。 当对象帧是术语中的顶部帧时,由数据扩展装置15产生的恢复的参考数据被输出作为数据扩展装置。 当对象帧是术语中的第二或后续帧时,基于由数据扩展装置15产生的恢复的参考数据和对象帧的预处理的图像数据生成模拟的特定参考数据,并作为特定参考数据输出。 当该对象帧是术语中的最终帧时,除了上述操作之外,基于特定参考数据和对象帧的预处理图像数据生成参考数据,并将其输出到数据压缩装置13 压缩
    • 6. 发明授权
    • Image encoding device, image encoding method, image encoding/decoding system
    • 图像编码装置,图像编码方法,图像编码/解码系统
    • US08340445B2
    • 2012-12-25
    • US12733904
    • 2008-09-30
    • Masayuki YamaguchiAkihisa YamadaShinichi Maeta
    • Masayuki YamaguchiAkihisa YamadaShinichi Maeta
    • G06K9/36G06K9/46H04B14/04H04B14/06
    • H04N19/146H04N19/103H04N19/126H04N19/137H04N19/182H04N19/426H04N19/46H04N19/593
    • An image encoding device comprises: a predicted value generation means for predicting target pixel data which is the pixel data of an encoding target pixel to generate predicted value data; a subtractor for calculating the difference value between the target pixel data and the predicted value data to generate difference value data; an encoding mode decision means for determining an encoding mode based on the difference value data and temporarily holding it in a buffer; an encoding target decision means for determining which data of the target pixel or the difference value is used as encoding target data to be encoded based on the encoding mode; a quantization means for applying a quantization processing to the encoding target data based on the encoding mode to generate quantized data; and a fixed-length code generation means for adding the encoding mode to the quantized data to generate a fixed-length code.
    • 图像编码装置包括:预测值生成装置,用于预测作为编码对象像素的像素数据的目标像素数据,生成预测值数据; 减法器,用于计算目标像素数据和预测值数据之间的差值,以产生差值数据; 编码模式判定装置,用于基于差值数据确定编码模式,并将其临时保存在缓冲器中; 编码目标决定装置,用于基于编码模式确定目标像素的数据或差分值被用作编码目标数据; 量化装置,用于基于编码模式对编码目标数据应用量化处理以产生量化数据; 以及用于将编码模式添加到量化数据以生成固定长度代码的固定长度代码生成装置。
    • 8. 发明授权
    • Wavelength-tunable semiconductor laser and fabrication process thereof
    • 波长可调半导体激光器及其制造工艺
    • US5789274A
    • 1998-08-04
    • US630625
    • 1996-04-10
    • Masayuki YamaguchiMitsuhiro Kitamura
    • Masayuki YamaguchiMitsuhiro Kitamura
    • H01S5/026H01S5/042H01S5/0625H01S5/10H01S5/20H01S5/227H01S5/34H01L21/00
    • B82Y20/00H01S5/06256H01S2304/04H01S5/0265H01S5/0425H01S5/106H01S5/2077H01S5/2272H01S5/3403
    • A wavelength tunable semiconductor laser includes an active region including an active layer generating an optical gain by injection of a current, a phase control region including a tuning layer generating variation of a refraction index by injection of the current, and a distributed Bragg reflector region including a tuning layer generating variation of a refraction index by injection of the current. The active region, the phase control region and the distributed Bragg reflector region are arranged in alignment in a resonance direction. A diffraction grating is provided in the vicinity of the tuning layer of the distributed Bragg reflector region. The wavelength tunable semiconductor laser includes a device for uniformly injecting a current to the phase control region and the distributed Bragg reflector region. The optical confinement factor to the tuning layer of the phase control region is greater than an optical confinement factor to the tuning layer of the distributed Bragg reflector type.
    • 波长可调谐半导体激光器包括有源区,该有源区包括通过注入电流而产生光增益的有源层,包括通过注入电流产生折射率变化的调谐层的相位控制区,以及分布布拉格反射区,包括 调谐层通过注入电流产生折射率的变化。 有源区域,相位控制区域和分布式布拉格反射器区域在谐振方向上排列成对准。 衍射光栅设置在分布式布拉格反射器区域的调谐层附近。 波长可调谐半导体激光器包括用于将电流均匀地注入相位控制区域和分布式布拉格反射器区域的装置。 相位控制区域的调谐层的光限制因子大于分布布拉格反射器类型的调谐层的光限制因子。
    • 9. 发明授权
    • Method for selecting a semiconductor integrated optical modulator/laser
light source device
    • 选择半导体集成光调制器/激光光源装置的方法
    • US5604827A
    • 1997-02-18
    • US528159
    • 1995-09-14
    • Masayuki Yamaguchi
    • Masayuki Yamaguchi
    • G01M11/00G02F1/025H01S5/00H01S5/026G02F1/01
    • H01S5/0014H01S5/0265
    • The present invention provides a method for selecting a semiconductor integrated optical modulator/laser light source device comprising a modulator section and a laser section. The method comprises the following steps. The laser section is supplied with a direct current which is equal to or larger than a threshold current for allowing the laser section to show a laser emission when the modulator section is supplied with a pulse signal for allowing the modulator section to show a pulse modulation so as to allow a tight emitted directly from a facet of the laser section to show a transmission through a light wavelength dispersion medium within which the light on transmission shows a dispersion in wavelength. An intensity of the light having shown the dispersion in wavelength is measured to find a coefficient of variation in intensity of the light, wherein the variation is due to a wavelength chirping. There is verified the fact that the coefficient of variation in intensity of the light be below a predetermined reference level.
    • 本发明提供了一种选择包括调制器部分和激光部分的半导体集成光调制器/激光光源装置的方法。 该方法包括以下步骤。 激光部分被提供有等于或大于阈值电流的直流电流,以便当向调制器部分提供脉冲信号以允许调制器部分显示脉冲调制时允许激光部分显示激光发射 以允许直接从激光部分的小面发射的透射通过光波长分散介质,其中透射光显示出波长的色散。 测量显示出波长色散的光的强度,以发现光的强度变化系数,其中变化是由于波长啁啾。 验证了光的强度变化系数低于规定的基准水平的事实。