| 摘要 |
<p>PURPOSE:To execute a control of an inter-frame suppression coefficient without causing a delay by a small scale circuit, by controlling a suppression coefficient of a difference suppressing circuit of an inter-frame encoding processing circuit. CONSTITUTION:A video signal is supplied to an inter-frame encoding processing circuit 6 through an A/D converter 2 and a frame dropping circuit 3, and an encoding output is supplied to a transmission control circuit 10 through a variable length encoding circuit 7 and a buffer memory 8. When the generated information quantity corresponding to one transmission frame in the inter-frame encoding processing circuit 6, and its generation time are denoted by H and S, respectively, an encoding control circuit 9 detects the generated information quantity HX in some time SX, and controls a suppression coefficient of a difference suppressing circuit of the inter-frame encoding processing circuit 6 so that the generated information quantity in some time SX does not exceed a straight line of HX=(H/S)XSX.</p> |
