发明名称 RASTER DISTORTION CORRECTION ARRANGEMENT.
摘要 Synchronization of a horizontal deflection circuit with horizontal synchronizing signal pulses is obtained by the use of a voltage controlled oscillator (VCO) that is included in a phase-lock loop circuit (PLL). A phase-control loop circuit (PCL) includes a phase detector having a first input terminal that is responsive to an output signal of the VCO and a second input terminal that is responsive to retrace pulses of a horizontal deflection circuit output stage. A sum signal of the phase detector output signal of the PLL and a vertical rate parabola signal is formed upstream of the loop filter of the PLL. Correction of a differential pin distortion is accomplished by dynamically phase shifting the phase of an output signal of the VCO in a vertical rate parabola manner.
申请公布号 MXPA02008339(A) 申请公布日期 2005.08.26
申请号 MX2002PA08339 申请日期 2002.08.27
申请人 THOMSON LICENSING S.A. 发明人 KNIGHT, PETER, RONALD
分类号 H04N3/23;G09G1/00;G09G1/04;H04N3/233;(IPC1-7):G09G1/04;H01J29/70 主分类号 H04N3/23
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