| 摘要 |
<p>Device for regulating bit rate in a system for the statistical multiplexing of several streams of images coded by coders E(i) according to MPEG 2 coding, integrated into each coder E(i), the statistical multiplexing system comprising a device (1) for allocating bit rate using the complexity calculated by the bit rate regulating device (10), each coder E(i) of each stream comprising a first coding device (20) carrying out a first spatial coding and a second coding device (30), storage means (12) storing the complexity X<1st->¦ of the last image coded spatially by the first coding device, the complexity (X<->GOP) of the last group of pictures actually coded by the second coding device (30), the last bit rate Ri allotted by the bit rate allocation device (1), the device (10) for regulating bit rate of the coder E(i) determining the complexity value for the next image coded by the second coding device (30), using the stored values, and transmitting this complexity value to the bit rate allocator (1) for the determination of the next stipulated bit rate sent to the coder E(i). <IMAGE></p> |
