公开(公告)号：KR1020050078894A

公开(公告)日：2005-08-08

申请号：KR1020040006975

申请日：2004-02-03

Applicant: 삼성전자주식회사

Inventor： 전성민 ,  함철희

IPC: G11B20/10

CPC classification number: H04N5/445 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4622 ,  H04N21/4884

Abstract: A caption presentation method and an apparatus using the method, by which caption and information related to the caption can be provided together in a broadcast receiver or in an image reproducer that displays the caption in a closed caption method. The method includes detecting subject information from a caption signal; obtaining visual information with respect to the caption, based on the detected caption subject information; and displaying the visual information and the caption signal together.

公开(公告)号：KR100440952B1

公开(公告)日：2004-07-21

申请号：KR1020010047141

申请日：2001-08-04

Applicant: 삼성전자주식회사

Inventor： 함철희 ,  조재문

IPC: H04N21/462

CPC classification number: H04N5/9264 ,  H04N19/152 ,  H04N19/18 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61 ,  H04N19/91

Abstract: An apparatus and a method of changing a bit rate of a compressed image bit stream by changing a codeword so as to easily change the bit rate and reduce a changing loss. The apparatus for changing a bit rate, in which an input bit stream generated by an image compression encoding method is changed into an output bit stream having a desired bit rate, includes a changing codeword determiner which selects codewords to replace the codewords of the input bit stream, and a codeword changer which changes the codewords of the input bit stream into the codewords selected by the changing codeword determiner. The method and the apparatus can be applied to image services provided through the Internet and receiving apparatuses supporting the Personal Video Recorder (PVR) function. Particularly, the method of changing the bit rate of a compressed image bit stream changes the codewords of input transform coefficients so as to easily change the bit rate and reduce the changing loss.

Abstract translation: 一种通过改变码字来改变压缩图像比特流的比特率以便容易地改变比特率并减少改变损失的设备和方法。 用于改变比特率的设备，其中由图像压缩编码方法产生的输入比特流被改变为具有期望比特率的输出比特流，包括改变码字确定器，其选择码字以替换输入比特的码字 流，以及将输入比特流的码字改变为由改变码字确定器选择的码字的码字改变器。 该方法和装置可以应用于通过因特网和支持个人视频录像机（PVR）功能的接收装置提供的图像服务。 特别地，改变压缩图像比特流的比特率的方法改变了输入变换系数的码字，以便容易地改变比特率并减小改变损失。