| 摘要 |
In order to synchronise buffer delays between coder and decoder buffers in a transmission system, e.g. an HDTV system, a signal representing the coder buffer occupancy Bc(r) is transmitted to the decoder with the picture signal. The transmission rate R or changes DELTA R in the transmission rate is summed or integrated at the cooler up to a point in time t1 at which picture information is written into the cooler buffer and a signal representing the resulting sum or integral is transmitted to the decoder with the picture signal. The decoder buffer occupancy Bd(r) is adjusted in response to the signals transmitted with the picture signal to adjust the delay through the decoder buffer and synchronise it with the delay through the cooler buffer. Underflow or overflow at the decoder buffer is also avoided. |
