Patent ID: 7852919
Filing Date: 2010-12-14
Classification: H04N

Abstract:
1. In a computing device that implements a video decoder, a method comprising: for an entry point key frame, receiving, at the computing device that implements the video decoder, a frame start code in a bit stream, wherein the frame start code has a first start code value that uniquely identifies the start of a frame and wherein the frame whose start is identified with the frame start code is the entry point key frame; receiving, at the computing device that implements the video decoder, a field start code in the bit stream, wherein the field start code has a second start code value that uniquely identifies the start of a field, wherein the first start code value is different than the second start code value, wherein the field whose start is identified with the field start code is a second coded interlaced video field in the entry point key frame following a first coded interlaced video field in the entry point key frame, the field start code indicating a point to begin decoding of the second coded interlaced video field, wherein the first coded interlaced video field in the entry point key frame is a predicted field, and wherein the second coded interlaced video field in the entry point key frame is an intra-coded field; and with the computing device that implements the video decoder, decoding the second coded interlaced video field of the entry point key frame without decoding the first coded interlaced video field of the entry point key frame.