A digital television transmitter has a buffer that receives a low resolution low pass filtered signal. A high resolution high pass filtered signal is applied to the buffer only when the buffer can accept it without overflowing. A digital television receiver receives a digital television picture signal and preferably a transmitter buffer occupancy state signal. A low resolution low pass filtered signal is applied to an adder. A high resolution high pass filtered signal is applied to the adder when the buffer state is low and also when it is intermediate and no substantial motion is present. The transmitter and receiver are useful in video teleconferencing.
申请公布号
DE3855477(D1)
申请公布日期
1996.09.19
申请号
DE19883855477
申请日期
1988.04.13
申请人
GENERAL ELECTRIC CO., PRINCETON, N.J., US
发明人
SCHIFF, LEONARD, NORMAN, LAWRENCEVILLE, NJ 08648, US