| 摘要 |
The video signal processing circuit has an input signal source and a corresponding signal processor. It comprises two signal transmitters (20,55), each with a corresponding biasing voltage device (30,65) for adjusting the direct biasing voltage of the respective transmitter. A sensor (80) responds to the characteristic biasing voltages of the two signal transmitters, and transmits at its output a control voltage, representing a deviation of both direct biasing voltages from a present mutual relation. A coupler (85) connects the control voltage to the signal processor for correction of the deviation. Both signal transmitters have preferably a current source (30,32; 65,68) each.
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