<p>A loop gain of an AGC circuit (7) and a loop gain of a clock regenerative circuit (6) are kept increased (an amplifier gain is increased or a loop filter is set to a wide band) until a synchronizing signal (a segment synchronizing signal or field synchronizing signal) is detected. After a synchronizing signal is detected, a loop gain of the AGC circuit (7) and a loop gain of the clock regenerative circuit (6) are reduced (an amplifier gain is decreased or the loop filter is set to a narrow band). The above arrangements can make compatible the shortening of time required for completing a converging processing in the AGC circuit and the clock regenerative circuit with the increasing of ghost interference removal and an accurate clock regeneration.</p>
申请公布号
WO0019673(A1)
申请公布日期
2000.04.06
申请号
WO1999JP05213
申请日期
1999.09.24
申请人
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;KONISHI, TAKAAKI;UEDA, KAZUYA;AZAKAMI, HIROSHI