An experimental study for a home-use digital VTR

Design Considerations Of The Video Compression System Of The New DV Camcorder Standard

“…In [13] a DCT coding system is proposed in which a horizontal stripe of blocks from a picture is coded as a fixed segment, using zonal coding at discrete bit rates. In [14] we notice a feedforward scheme with adaptive zonal coding having a variable bit cost for each DCT block within the segment. The DV standard is based on a threshold coding scheme with a more robust variable-length coding technique and simplified quantization strategies, thereby paying attention to low complexity.…”

“…A particular simple system is obtained by taking W ( u , v ) / S = 2-P with p being an integer that is controlled by all three elements [20] discussed in this section. The final quantization table is shown in Table 6.…”

Data compression systems for home-use digital video recording

“…One of the most recent results in DCT coding for homeuse digital video recording has been published by Yamamitsu et al [31]. This is also a feedforward buffering system over a small group of DCT blocks.…”

“…This can be modeled as multiplying each coefficient F(u) by a weighting factor w(u). If the one-dimensional DCT is applied, specified by [31], (18) is derived for block size N = 8. The use of including a spectral weighting inside the transform has been reported earlier (see, e.g., 1331) in order to obtain a visually optimized DCT, but in the current proposal it has been explicitly used for reduction of hardware complexity.…”

An Experimental Digital Consumer Hdtv Recorder Using Mc-dct Video Compression

“…The difference in bit rate is explained by the applied sampling standards for YUV signals (3:l:l versus 4:2:2). Doi et al [4] and Yamamitsu et al [5] reported on a system with feedforward bit-rate control yielding k e d rate on subimage basis, using 19-40 Mbit/s video bit rate. Finally, Onishi et al [6] discussed a more complex system in which 4 consecutive frames of 4:2:2 sampled images were compressed Revised manuscript received September 9, 1993 0098 3063/93 $03.00 1993 IEEE to 23 Mbit/s.…”