Title:
デジタル高精細および/またはデジタル標準精細テレビジョン信号を復号化するためのデジタルビデオデコーダ
Document Type and Number:
Japanese Patent JP3591083
Kind Code:
B2
Abstract:
Methods and apparatus for reducing the complexity of decoder circuitry and video decoder memory requirements are disclosed. The described video decoders are capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.
Inventors:
Jill McDonald Voice
Larry Parstein
Larry Parstein
Application Number:
JP26295295A
Publication Date:
November 17, 2004
Filing Date:
October 11, 1995
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04N7/30; G06T3/40; G06T9/00; G11B5/008; H03M7/00; H04N5/44; H04N5/45; H04N7/015; H04N7/24; H04N7/26; H04N7/36; H04N7/46; H04N7/50; H04N9/804; H04N21/231; H04N21/2343; H04N21/236; H04N21/2662; H04N21/431; H04N21/432; H04N21/434; H04N21/438; H04N21/4402; H04N21/462; G11B15/12; G11B15/18; G11B15/467; H04N5/46; H04N5/7826; H04N9/82; (IPC1-7): H04N7/30
Domestic Patent References:
| JP3204290A | ||||
| JP6292187A | ||||
| JP6197334A | ||||
| JP5344494A |
Foreign References:
| WO1993017523A1 |
Attorney, Agent or Firm:
Yasuo Sakuta