发明名称 |
TRANSKODIERUNG VON PROGRESSIV-KODIERTEN I-SLICE- AUFGEFRISCHTEN MPEG DATENSTRÖMEN FÜR TRICKMODI |
摘要 |
Progressive I-slice refreshed MPEG data streams are transcoded to I-frame based MPEG data streams to enable trick play modes on a television appliance, such as pause, scan forward, scan backward, jump, or still frame displays for use, e.g., in film indexing (chapters). A progressive I-slice refreshed MPEG data stream 10 having I-slices distributed over multiple P-frames is received by a television appliance 300 . The P-frames are decoded at decoder 220 to recover the I-slices which make up a complete I-frame. The recovered I-slices are assembled (e.g., by processor 230 ) into a complete I-frame. The complete I-frame is encoded at an encoder 250 . A selected P-frame in the MPEG data stream is replaced with the encoded I-frame (e.g., via multiplexer 255 ) to provide an encoded I-frame based data stream 200 . The I-frame based data stream is stored (e.g., in memory 240 ) for trick play mode use. |
申请公布号 |
AT270021(T) |
申请公布日期 |
2004.07.15 |
申请号 |
AT20010986830T |
申请日期 |
2001.10.03 |
申请人 |
GENERAL INSTRUMENT CORPORATION |
发明人 |
CHEN, KUN-PEI;MEHR, JOSEPH;NARASIMHAN, MANDAYAM;LUTHRA, AJAY;DU BREUIL, THOMAS |
分类号 |
H04N19/107;H04N7/24;H04N19/174;H04N19/40;H04N21/234;H04N21/44;H04N21/845 |
主分类号 |
H04N19/107 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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