公开(公告)号：US20080174681A1

公开(公告)日：2008-07-24

申请号：US12076717

申请日：2008-03-21

申请人： Shigeyuki Okada ,  Hiroshi Hanafusa ,  Noriaki Kojima

发明人： Shigeyuki Okada ,  Hiroshi Hanafusa ,  Noriaki Kojima

IPC分类号： H04N5/76

CPC分类号： H04N1/212 ,  H04N1/2112 ,  H04N1/2137 ,  H04N5/23293 ,  H04N5/772 ,  H04N5/907 ,  H04N9/7921

摘要： In a digital camera, when snapshot shooting is instructed during recording of a moving image, a shot still image is temporarily pushed aside in a memory area for use in pushing aside (7a) in a frame buffer (7). A currently shooting motion image and a still image are displayed in parallel on a display (9), so that a user can confirm a content of a snapshot. The moving image continues to be recorded even during a push-aside operation. After a moving image processing is completed, the still image is processed by an image correcting circuit (4). The frame buffer (7) comprises a plurality of frame recording areas, and is shared on the occasions of a moving image processing and a still image processing. In a normal moving image processing, these areas are utilized in a cyclic manner, and when the still image is shot, any of areas will be utilized. Thereafter, the rest of areas are utilized in the cyclic manner for the moving images. The recording function for the moving image and still image is improved at low cost, it becomes easy to take a snapshot, and the merchandise size is not increased.

公开(公告)号：US20080174666A1

公开(公告)日：2008-07-24

申请号：US12076702

申请日：2008-03-21

申请人： Shigeyuki Okada ,  Hiroshi Hanafusa ,  Noriaki Kojima

发明人： Shigeyuki Okada ,  Hiroshi Hanafusa ,  Noriaki Kojima

IPC分类号： H04N5/225

CPC分类号： H04N1/212 ,  H04N1/2112 ,  H04N1/2137 ,  H04N5/23293 ,  H04N5/772 ,  H04N5/907 ,  H04N9/7921

摘要： In a digital camera, when snapshot shooting is instructed during recording of a moving image, a shot still image is temporarily pushed aside in a memory area for use in pushing aside (7a) in a frame buffer (7). A currently shooting motion image and a still image are displayed in parallel on a display (9), so that a user can confirm a content of a snapshot. The moving image continues to be recorded even during a push-aside operation. After a moving image processing is completed, the still image is processed by an image correcting circuit (4). The frame buffer (7) comprises a plurality of frame recording areas, and is shared on the occasions of a moving image processing and a still image processing. In a normal moving image processing, these areas are utilized in a cyclic manner, and when the still image is shot, any of areas will be utilized. Thereafter, the rest of areas are utilized in the cyclic manner for the moving images. The recording function for the moving image and still image is improved at low cost, it becomes easy to take a snapshot, and the merchandise size is not increased.

公开(公告)号：US07272263B2

公开(公告)日：2007-09-18

申请号：US10076987

申请日：2002-02-14

申请人： Shigeyuki Okada

发明人： Shigeyuki Okada

IPC分类号： G06K9/36

CPC分类号： H04N19/90 ,  H04N19/156 ,  H04N19/17 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186 ,  H04N19/42 ,  H04N19/44 ,  H04N19/63

摘要： A decoding unit (12) decodes an image according to JPEG 2000. A simplifying unit (30) comprises an automatic transformer (32) which compares an elapsed time to a time limit at each stage of decoding the image and switches the decoding process to a simplified process if necessary. For instance, if the playback of a motion picture takes over 1/30 second, the simplified process, in which only low frequency components are decoded, is conducted by the automatic transformer (32).

摘要翻译： 解码单元（12）根据JPEG 2000解码图像。简化单元（30）包括自动变压器（32），其将经过的时间与在图像解码的每个阶段的时间限制进行​​比较，并将解码处理切换到 如有需要可简化程序。 例如，如果动画的播放超过1/30秒，则仅由低频分量解码的简化处理由自动变压器（32）进行。

公开(公告)号：US07248304B2

公开(公告)日：2007-07-24

申请号：US11337517

申请日：2006-01-24

申请人： Shigeyuki Okada ,  Kouichi Yamada ,  Mamoru Mukuno

发明人： Shigeyuki Okada ,  Kouichi Yamada ,  Mamoru Mukuno

IPC分类号： H04N5/50

CPC分类号： H04N21/4383 ,  H04N5/4401 ,  H04N21/4263 ,  H04N21/433 ,  H04N21/4382 ,  H04N21/44016 ,  H04N21/44209 ,  H04N21/4435

摘要： The digital broadcast receiving apparatus according to the present invention includes a tuning unit for outputting normal image data for performing a normal reproduction operation corresponding to a user selected channel, a memory unit for outputting background image data for performing a background reproduction operation when the normal reproduction operation cannot be performed, a data selector for receiving the normal image data and the background image data and outputting one of the normal image data and the background image data, and an MPEG video decode unit for decoding image data output by the data selector to generate an image signal. The tuning unit successively receives the respective channel selected in the background independently of the user selection, and stores the background image data corresponding to the respective channels in the memory unit.

摘要翻译： 根据本发明的数字广播接收装置包括：调谐单元，用于输出用于执行与用户选择的频道相对应的正常再现操作的正常图像数据;存储单元，用于输出当正常再现时执行背景再现操作的背景图像数据 无法执行操作的数据选择器，用于接收正常图像数据和背景图像数据并输出正常图像数据和背景图像数据之一的数据选择器，以及用于解码由数据选择器输出的图像数据的MPEG视频解码单元，以产生 图像信号。 调谐单元连续地接收与用户选择无关地在背景中选择的相应频道，并且将与各个频道相对应的背景图像数据存储在存储单元中。

公开(公告)号：US07245821B2

公开(公告)日：2007-07-17

申请号：US10156912

申请日：2002-05-28

申请人： Shigeyuki Okada

发明人： Shigeyuki Okada

IPC分类号： H04N5/91

CPC分类号： H04N19/40 ,  H04N19/127 ,  H04N19/423 ,  H04N19/61

摘要： When a reverse reproduction is instructed, an MPEG video stream is once decoded and is again recoded by an MPEG video encoder so as to generate a recoded data sequence which will be overwritten on a storage area in a hard disk. An MPEG video decoder reads out this recoded data sequence in a reverse time-series manner and decodes it successively, and then converts it to a video signal so as to be outputted to a display.

摘要翻译： 当指示反向再现时，MPEG视频流被一次解码，并被MPEG视频编码器再次重新编码，以产生将被重写在硬盘的存储区域上的重新编码的数据序列。 MPEG视频解码器以反时间序列的方式读出该重新编码的数据序列，并对其进行连续解码，然后将其转换为视频信号，以输出到显示器。

公开(公告)号：US07120306B2

公开(公告)日：2006-10-10

申请号：US10391020

申请日：2003-03-19

申请人： Shigeyuki Okada ,  Hideki Yamauchi

发明人： Shigeyuki Okada ,  Hideki Yamauchi

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/436 ,  H04N19/124 ,  H04N19/423 ,  H04N19/63

摘要： A wavelet transform is applied to an original image, so as to generate an image of a first hierarchy. Among the thus generated image of the first hierarchy, each of high-frequency sub-band components 1HL, 1LH and 1HH are immediately quantized and coded so as to be temporarily stored in a coded data storage. Another wavelet transform is applied to an LL sub-band component, among the image of the first hierarchy, so as to generate an image of a second hierarchy. Thereafter, an image of a third hierarchy is generated from an LL sub-band component in the image of the second hierarchy. During such a process, quantization and coding processings are performed in parallel with transformation processings. After all processings are completed and the coded data are prepared, coded image data complying with the JPEG2000 standard are generated by first reading out low-frequency components in sequence from the prepared coded data.

公开(公告)号：US07046853B2

公开(公告)日：2006-05-16

申请号：US10156565

申请日：2002-05-24

申请人： Shigeyuki Okada

发明人： Shigeyuki Okada

IPC分类号： G06K9/36

CPC分类号： G06T9/007

摘要： Coded image data which are coded hierarchically are decoded successively by an inverse wavelet transformer. During a process of decoding, images of intermediate hierarchy are stored in a frame buffer. In a case where constrains are placed on memory capacity or power capacity utilizable for a decoding processing, or resolution at an outputting end is limited, an abort processor discontinues or aborts the decoding processing in the middle. Then, the abort processor extracts intermediate-hierarchy images obtained by that time, from the frame buffer, and performs thereon an image processing such as a scaling, as appropriate, so as to be used as final decoded images. Thereby, a processing cost is markedly reduced.

摘要翻译： 分层编码的编码图像数据由逆小波变换器连续解码。 在解码过程中，中间层次的图像被存储在帧缓冲器中。 在对解码处理使用的存储器容量或功率容量进行约束的情况下，或者输出端的分辨率受到限制的情况下，中止处理器在中间停止或中止解码处理。 然后，中止处理器从帧缓冲器中提取由该时间获得的中间层图像，并且适当地执行诸如缩放之类的图像处理，以被用作最终解码图像。 因此，处理成本明显降低。

公开(公告)号：US06952451B2

公开(公告)日：2005-10-04

申请号：US09965849

申请日：2001-10-01

申请人： Shigeyuki Okada

发明人： Shigeyuki Okada

IPC分类号： G06T9/00 ,  H04N5/45 ,  H04N5/46 ,  H04N5/765 ,  H04N5/92 ,  H04N5/93 ,  H04N7/50 ,  H04N19/127 ,  H04N19/132 ,  H04N19/156 ,  H04N19/159 ,  H04N19/172 ,  H04N19/196 ,  H04N19/42 ,  H04N19/423 ,  H04N19/44 ,  H04N19/503 ,  H04N19/513 ,  H04N19/60 ,  H04N19/61 ,  H04N19/625 ,  H04N19/91 ,  H04N7/18

CPC分类号： H04N5/4401 ,  H04N5/45 ,  H04N5/46 ,  H04N7/0122 ,  H04N19/122 ,  H04N19/126 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/59 ,  H04N19/60 ,  H04N19/61 ,  H04N21/4263 ,  H04N21/4316 ,  H04N21/434 ,  H04N21/4347 ,  H04N21/435 ,  H04N21/440263

摘要： Header information capture section extracts information such as the numbers of dots in horizontal and vertical directions, respectively, of the picture, a frame rate and so on from a sequence header included in an MPEG video stream. Total processing amount estimation/reproduction scheme determination section receives a channel priority determined for each display mode and an output of header information capture section to estimate a total processing amount and determine a reproduction scheme for each channel. MPEG decoder receives code inputs of channels 1 to 4 in a time-dividing manner through header information capture section to perform decoding of picture codes of each channel according to a determination signal outputted from total processing amount estimation/reproduction scheme determination section. With such a configuration, there is provided an moving picture decoding apparatus capable of performing high quality picture display in plural channels while suppressing increase in circuit scale of a decoder and in use amount of a memory.

摘要翻译： 标题信息捕获部分从MPEG视频流中包含的序列标题中分别提取图像的水平和垂直方向的点数，帧速率等信息。 总处理量估计/再现方案确定部分接收为每个显示模式确定的信道优先级和头信息捕获部分的输出，以估计总处理量并确定每个信道的再现方案。 MPEG解码器通过标题信息捕获部分以时分方式接收信道1至4的代码输入，以根据从总处理量估计/再现方案确定部分输出的确定信号执行每个信道的图像代码的解码。 通过这样的结构，能够抑制解码器的电路规模的增加和存储器的使用量，能够在多个通道中进行高质量的图像显示的运动图像解码装置。

公开(公告)号：US20050175250A1

公开(公告)日：2005-08-11

申请号：US11054537

申请日：2005-02-10

申请人： Tsuyoshi Watanabe ,  Shigeyuki Okada

发明人： Tsuyoshi Watanabe ,  Shigeyuki Okada

IPC分类号： G06K9/36 ,  H03M7/00 ,  H04N7/26

CPC分类号： H04N19/436 ,  H04N19/13 ,  H04N19/42 ,  H04N19/44 ,  H04N19/61 ,  H04N19/63

摘要： Coded data are inputted from a stream analyzing unit to an entropy decoding unit. A group of peripheral information registers stores peripheral information on a target pixel for estimating a context used for arithmetic decoding of the coded data. Based on the peripheral information stored in the group of peripheral registers, a context estimation unit estimates a context and delivers the estimated context to an arithmetic decoding unit. The arithmetic decoding unit decodes the coded data based on a context label, then derives a decision and supplies the decision to an inverse quantization unit. The peripheral information stored in the group of peripheral registers is updated by a decoding result of the arithmetic decoding unit in the same cycle as the decoding.

摘要翻译： 编码数据从流分析单元输入到熵解码单元。 一组周边信息寄存器存储关于用于估计用于编码数据的算术解码的上下文的目标像素的外围信息。 基于存储在外围寄存器组中的外围信息，上下文估计单元估计上下文并将估计上下文传送到算术解码单元。 算术解码单元基于上下文标签解码编码数据，然后导出判定，并将判定提供给逆量化单元。 存储在外围寄存器组中的外围信息通过与解码相同的周期的算术解码单元的解码结果来更新。

公开(公告)号：US06871001B1

公开(公告)日：2005-03-22

申请号：US09700575

申请日：2000-03-21

申请人： Shigeyuki Okada

发明人： Shigeyuki Okada

IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N19/423 ,  H04N19/503 ,  H04N19/577 ,  H04N19/61 ,  H04N19/625 ,  H04N9/79

CPC分类号： H04N19/436 ,  H04N19/186 ,  H04N19/423 ,  H04N19/44 ,  H04N19/51 ,  H04N19/61

摘要： An MPEG video decoder 1 decodes a MPEG video stream using a discrete cosine transform together with a motion compensated prediction performing backward prediction and forward prediction. A frame buffer 104a is provided with a storage area for forward-reference luminance data used for the backward prediction and a storage area for rearward-reference color-difference data used for the forward prediction. A frame buffer 104b is provided with a storage area for forward-reference color-difference data used for the backward prediction and a storage area for rearward-reference luminance data used for the forward prediction. Memory access for each of the frame buffers 104a, 104b with an input/output data bus width of 16 bit is performed in a parallel processing.

摘要翻译： MPEG视频解码器1使用离散余弦变换以及执行反向预测和前向预测的运动补偿预测来解码MPEG视频流。 帧缓冲器104a设置有用于后向预测的前向参考亮度数据的存储区域和用于向前预测的后向参考色差数据的存储区域。 帧缓冲器104b设置有用于后向预测的前向参考色差数据的存储区域和用于正向预测的后向参考亮度数据的存储区域。 在并行处理中执行具有16位的输入/输出数据总线宽度的每个帧缓冲器104a，104b的存储器访问。