Television – Video display – Cathode-ray tube
Reexamination Certificate
2005-05-17
2005-05-17
Kostak, Victor R. (Department: 2614)
Television
Video display
Cathode-ray tube
C315S371000
Reexamination Certificate
active
06894731
ABSTRACT:
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.
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Data Sheet TDA4841PS I2C-bus autosync deflection controller for PC monitors, Philips Semiconductor 1999 Oct. 25, 1999.
Knight Peter Ronald
Wilber James Albert
Fried Harvey D.
Johnson Christine
Kostak Victor R.
Thomson Licensing S.A.
Tripoli Joseph S.
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