公开(公告)号：US06175386B1

公开(公告)日：2001-01-16

申请号：US09090001

申请日：1998-06-02

申请人： Mihaela Van De Schaar-Mitrea ,  Peter H. N. De With

发明人： Mihaela Van De Schaar-Mitrea ,  Peter H. N. De With

IPC分类号： H04N5445

CPC分类号： H04N5/44504 ,  H04N7/088 ,  H04N19/10 ,  H04N19/12 ,  H04N19/14 ,  H04N19/146 ,  H04N19/176 ,  H04N19/426 ,  H04N21/42653 ,  H04N21/482 ,  H04N21/485 ,  H04N21/488 ,  H04N21/8126

摘要： Field or frame memories are often used in television receivers for video signal processing functions, such as noise reduction and/or flicker reduction. Television receivers also have graphic features such as teletext, menu-driven control systems, multilingual subtitling, an electronic TV-Guide, etc. In a method of processing television picture signals including both video (VID) and graphic (GFX) information, the video and graphic signals are individually compressed in accordance with different (lossy and loss-less, respectively) compression algorithms (22;24), stored in the same field or frame memory (21), and decompressed (23;25) after processing (20). As such, a significant reduction of memory capacity is achieved without adversely affecting the graphics quality. The method is not only applicable to locally generated graphic signals (TXT,OSD) but also to graphic information which is detected (26) as being embedded in a received television signal.

摘要翻译： 通常在电视接收机中使用场或帧存储器来进行视频信号处理功能，例如噪声降低和/或闪烁降低。 电视接收机还具有诸如图文电视，菜单驱动控制系统，多语言字幕，电子电视指南等图形功能。在处理包括视频（VID）和图形（GFX）信息两者的电视图像信号的方法中，视频 根据存储在相同字段或帧存储器（21）中的不同（有损耗和无损耗）压缩算法（22; 24），并且在处理之后解压缩（23; 25）（20）来分别压缩图形信号 ）。 因此，在不会对图形质量产生不利影响的情况下实现显着降低存储器容量。 该方法不仅适用于本地生成的图形信号（TXT，OSD），还适用于被检测（26）嵌入在接收的电视信号中的图形信息。