公开(公告)号：US6078774A

公开(公告)日：2000-06-20

申请号：US390626

申请日：1999-09-07

Applicant: Jeong-Hoon Kim ,  Cheol-Young Han ,  Moon-Bae Park

Inventor： Jeong-Hoon Kim ,  Cheol-Young Han ,  Moon-Bae Park

IPC: B41J11/00 ,  G03G15/16 ,  G03G15/20 ,  G03G15/24

CPC classification number: G03G15/2053 ,  G03G15/162 ,  G03G2215/1695 ,  G03G2215/2061

Abstract: A transfer unit of an electrophotographic printer includes: a transfer roller and a fuser roller for transferring an image onto the paper. One of the two rollers has a shape having flared ends and a smaller diameter at the center portion thereof and the other roller has a core portion having a crowned shape mating with the shape of the flared roller and a deformable portion which is provided around the core portion so as to form a circumferential surface having a straight profile line, and which is deformable so that a uniform gap between the two rollers is formed.

Abstract translation: 电子照相打印机的转印单元包括：转印辊和定影辊，用于将图像转印到纸上。 两个辊中的一个具有在其中心部分具有扩口端和较小直径的形状，另一个辊具有与扩张辊的形状相配合的凸起形状的芯部分和设置在芯部周围的可变形部分 以形成具有直的轮廓线的圆周表面，并且其可变形，从而形成两个辊之间的均匀间隙。

公开(公告)号：US5793433A

公开(公告)日：1998-08-11

申请号：US581491

申请日：1995-12-29

Applicant: Jeong-Hoon Kim ,  Min-Seung Lee

Inventor： Jeong-Hoon Kim ,  Min-Seung Lee

IPC: H04N5/44 ,  H04N7/01

CPC classification number: H04N7/0122 ,  H04N7/0135

Abstract: An apparatus and method for extending the height of an image to display a video signal having a 4:3 aspect ratio on a screen having a 16:9 aspect ratio. The apparatus includes: a field memory for storing pixel data of horizontal scanning lines of an input region which will be extended vertically, among the horizontal scanning lines of a field unit being inputted, and outputting the pixel data of the horizontal scanning lines of a region which will be extended vertically among the stored pixel data; line memories for sequentially inputting and delaying the pixel data outputted from the field memory by a horizontal scanning line unit, the number of the line memories corresponding to a vertical extension rate of the image; and a low-pass filtering and sub-sampling part for low-pass filtering and sub-sampling by respectively multiplying different filter coefficients having values determined by positions of new vertically extended horizontal scanning lines by the pixel data of the horizontal scanning lines which are each outputted with a different delay from the line memories and by adding the multiplied pixel data in correspondence with the positions of the new horizontal scanning lines, to thereby output the pixel data of the vertically extended horizontal scanning lines.

Abstract translation: 一种用于在具有16：9宽高比的屏幕上扩展图像的高度以显示具有4：3宽高比的视频信号的装置和方法。 该装置包括：场存储器，用于存储要输入的场单元的水平扫描行之中将被垂直延伸的输入区域的水平扫描线的像素数据，并输出区域的水平扫描线的像素数据 其将在所存储的像素数据之间垂直地延伸; 行存储器，用于通过水平扫描线单元顺序地输入和延迟从场存储器输出的像素数据，行存储器的数量对应于图像的垂直扩展速率; 以及低通滤波和子采样部分，用于通过分别将具有由新垂直扩展的水平扫描线的位置确定的值的不同滤波器系数乘以每个水平扫描线的像素数据来进行低通滤波和子采样 以与行存储器不同的延迟输出，并且通过将相应的像素数据与新的水平扫描行的位置相加，从而输出垂直延伸的水平扫描线的像素数据。

公开(公告)号：US5506625A

公开(公告)日：1996-04-09

申请号：US393396

申请日：1995-02-23

Applicant: Jeong-Hoon Kim

Inventor： Jeong-Hoon Kim

IPC: H04N5/14 ,  H04N5/44 ,  H04N7/01 ,  H04N9/00

CPC classification number: H04N7/0122 ,  H04N7/0102 ,  Y10S348/913

Abstract: The present invention provides a video signal conversion method for displaying a video signal having a 4:3 aspect ratio on a screen having a 16:9 aspect ratio by using a single clock. The video signal conversion comprises the steps of inserting two zero pixels between two pixels of the 4:3 video signal, band pass filtering the two pixels of the 4:3 video signal, such that 3/4 of the bandwidth of the pixels is passed and upper and lower parts of pixels are not passed, and sampling the filtered pixels by every fourth transition of a clock signal, and then displaying the sampled pixels on the 16:9 screen.

Abstract translation: 本发明提供了一种用于通过使用单个时钟在具有16:9宽高比的屏幕上显示具有4:3宽高比的视频信号的视频信号转换方法。 视频信号转换包括以下步骤：在4：3视频信号的两个像素之间插入两个零像素，对4:3视频信号的两个像素进行带通滤波，使得像素的带宽的3/4通过 并且不通过像素的上部和下部，并且对时钟信号的每第四个转换对滤波像素进行采样，然后在16:9屏幕上显示采样像素。