The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2000
Filed:
Nov. 21, 1996
Elliot N Linzer, Bronx, NY (US);
Aaron Wells, New Rochelle, NY (US);
C-Cube Microsystems, Inc., Milpitas, CA (US);
Abstract
Compressed video transcoding apparatus and methods are disclosed. One embodiment eliminates the need for reorder buffers by utilizing an encode order video decoder which decodes a first compressed video bit stream to provide a sequence of frames in an encode order suitable for direct encoding without further reordering. An encode order video encoder receives the sequence of frames in encode order and directly encodes the frames without further reordering to provide a second compressed video bit stream. Another embodiment utilizes a frame reorder device to reorder compressed frames of a first compressed video bit stream into an encode order such that a subsequent encoding operation after decoding the first compressed video bit stream can be performed without further reordering of the frames. The reordered compressed frames are decoded and applied in the encode order to an encoder which encodes the frames to provide a second compressed video bit stream. Another embodiment includes a decoder which decodes a first compressed video bit stream to provide a sequence of decoded frames. The sequence of decoded frames is applied to an encoder along with auxiliary information regarding the first compressed video bit stream. The encoder utilizes the auxiliary information to simplify encoding of the decoded frame sequence. The auxiliary information may include motion vectors, quantization scale, number of bits used, motion compensation mode and repeat field indications for the first compressed video bit stream.