公开(公告)号：US08098738B2

公开(公告)日：2012-01-17

申请号：US11729026

申请日：2007-03-28

申请人： Seiji Kawa ,  Minoru Kawahara

发明人： Seiji Kawa ,  Minoru Kawahara

IPC分类号： H04N7/12

CPC分类号： G11B27/034 ,  G11B2220/20

摘要： A shortest cut duration is a minimum required period between an edit point set on a stream of pictures such as an MPEG stream and the next edit point set on the stream. Restrictions are made on the shortest cut duration lenient in editing the stream. A controller detects each edit point set on the stream and identifies the fewest possible pictures which are not to be displayed but must be decoded first before decoding a picture to be displayed after the edit point. Then, the controller finds a start point representing the timing to start decoding the fewest possible pictures. Subsequently, the controller controls decoders to decode the stream in picture units on the basis of the start point, and controls a switcher to select one of outputs of the decoders on the basis of the edit point.

摘要翻译： 最短切割持续时间是在诸如MPEG流的图像流和在流上设置的下一个编辑点之间设置的编辑点之间的最小所需时间段。 限制条件是在剪辑流中宽度最短的时间段。 控制器检测流上设置的每个编辑点，并且识别不被显示的最少的可能图像，但是必须先解码在编辑点之后要显示的图像。 然后，控制器找到表示开始解码尽可能少的图片的定时的开始点。 随后，控制器控制解码器基于起始点对图像单元中的流进行解码，并且控制切换器基于编辑点选择解码器的输出之一。

公开(公告)号：US07630018B2

公开(公告)日：2009-12-08

申请号：US11395198

申请日：2006-04-03

申请人： Seiji Kawa ,  Takao Inoue

发明人： Seiji Kawa ,  Takao Inoue

IPC分类号： H04N5/50 ,  H04N5/445

CPC分类号： H04N5/46 ,  H04N5/44513 ,  H04N7/0122 ,  H04N21/440218 ,  H04N21/485

摘要： The present invention allows a device to easily convert an on-screen image in HD format or SD format without increasing the processing load. The device according to an embodiment of the present invention uses the on-screen image D3 in which the number of horizontal pixels is set between horizontal pixel counts of HD format and horizontal pixel counts of SD format. Therefore, the device can utilize a relatively simple conversion ratio when converting the image in HD and SD format. This tremendously reduces the computational processing load. In addition, since the device uses the simple conversion ratio, the device can maintain the quality of the on-screen image D3.

摘要翻译： 本发明允许设备在不增加处理负荷的情况下容易地转换HD格式或SD格式的屏幕图像。 根据本发明的实施例的设备使用屏幕图像D3，其中在HD格式的水平像素计数和SD格式的水平像素计数之间设置水平像素的数量。 因此，当以HD和SD格式转换图像时，该装置可以利用相对简单的转换比率。 这大大降低了计算处理负荷。 此外，由于设备使用简单的转换比率，所以设备可以保持屏幕图像D3的质量。

公开(公告)号：US5949482A

公开(公告)日：1999-09-07

申请号：US600688

申请日：1996-02-13

申请人： Seiji Kawa

发明人： Seiji Kawa

IPC分类号： H04N9/64 ,  H04N9/68 ,  H04N5/335 ,  H04N5/228

CPC分类号： H04N9/643 ,  H04N9/68

摘要： There is provided a signal processing apparatus for processing input three primary color signals, which is capable of providing natural color reproduction. Input color signals R to B are subjected to a matrix operation to obtain color difference signals (R-Y)0 and (B-Y)0. The color signals R to B are compressed by means of high luminance compression circuits 12R to 12B, respectively, and these output color signals R1, G1 and B1 are subjected to obtain a luminance signal Y1, color difference signals (R-Y)1 and (B-Y)1. The respective outputs obtained from the matrix operation are operated by means of look-up tables 43 to 45 and 52 to obtain color difference signals (R-Y)3 and (B-Y)3 for representing a color which has the same hue as a hue .theta. 0 of color represented by color signals R to B and a saturation same with the saturation r1 of color represented by color signals R1, G1 and B1. Then, the luminance signal Y1, color difference signals (R-Y)3 and (B-Y)3 are subjected to an inverse matrix operation to obtain output color signals Rn, Gn and Bn. The color signals thus obtained have no change in a hue and the saturation smaller than that of conventional ones even if high luminance compression processing is executed. Accordingly, a high luminance portion can be prevented from being too deeply colored.

摘要翻译： 提供了一种用于处理输入的三原色信号的信号处理装置，其能够提供自然的色彩再现。 对色差信号R〜B进行矩阵运算，得到色差信号（R-Y）0和（B-Y）0。 彩色信号R〜B分别通过高亮度压缩电路12R〜12B进行压缩，对这些输出色信号R1，G1，B1进行亮度信号Y1，色差信号（RY）1和（BY ）1。 通过查询表43至45和52来操作从矩阵运算获得的各个输出，以获得色差信号（RY）3和（BY）3，用于表示具有与色调θ0相同色调的颜色 由颜色信号R至B表示的颜色和与由颜色信号R1，G1和B1表示的颜色的饱和度r1相同的饱和度。 然后，对亮度信号Y1，色差信号（R-Y）3和（B-Y）3进行逆矩阵运算，得到输出色信号Rn，Gn，Bn。 即使执行高亮度压缩处理，由此获得的颜色信号的色相和饱和度也不比常规色彩小。 因此，可以防止高亮度部分太深的着色。