VERTICAL SYNCHRONIZING PULSE SEPARATION CIRCUIT
PURPOSE:To separate a vertical synchronizing pulse only from a composite synchronizing signal, by attenuating other pulses except the vertical synchronizing pulse at a Miller integrator. CONSTITUTION:A composite synchronizing signal is inputted to a terminal 42. The time constant consisting of a res...
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| creator | WATANABE MASAHIRO SUGANO HITOSHI |
| description | PURPOSE:To separate a vertical synchronizing pulse only from a composite synchronizing signal, by attenuating other pulses except the vertical synchronizing pulse at a Miller integrator. CONSTITUTION:A composite synchronizing signal is inputted to a terminal 42. The time constant consisting of a resistor 15 and a capacitor 16 is taken smaller than a horizontal synchronizing pulse and an equalizing pulse and larger than a vertical synchronizing pulse. When the integration time constant is sufficiently smaller than the pulse width, an input signal is outputted as it is. Further, when sufficiently larger, no input signal is outputted. Thus, the integrator can sufficiently attenuate components other than a vertical synchronizing signal in the composite synchronizing signal. But the vertical synchronizing signal is also attenuated. Further, through the use of a voltage comparator 18 having a reference voltage source for the purpose of slicing, the vertical synchronizing signal can be accurately picked up. |
| format | Patent |
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CONSTITUTION:A composite synchronizing signal is inputted to a terminal 42. The time constant consisting of a resistor 15 and a capacitor 16 is taken smaller than a horizontal synchronizing pulse and an equalizing pulse and larger than a vertical synchronizing pulse. When the integration time constant is sufficiently smaller than the pulse width, an input signal is outputted as it is. Further, when sufficiently larger, no input signal is outputted. Thus, the integrator can sufficiently attenuate components other than a vertical synchronizing signal in the composite synchronizing signal. But the vertical synchronizing signal is also attenuated. 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CONSTITUTION:A composite synchronizing signal is inputted to a terminal 42. The time constant consisting of a resistor 15 and a capacitor 16 is taken smaller than a horizontal synchronizing pulse and an equalizing pulse and larger than a vertical synchronizing pulse. When the integration time constant is sufficiently smaller than the pulse width, an input signal is outputted as it is. Further, when sufficiently larger, no input signal is outputted. Thus, the integrator can sufficiently attenuate components other than a vertical synchronizing signal in the composite synchronizing signal. But the vertical synchronizing signal is also attenuated. Further, through the use of a voltage comparator 18 having a reference voltage source for the purpose of slicing, the vertical synchronizing signal can be accurately picked up.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TESTING |
| title | VERTICAL SYNCHRONIZING PULSE SEPARATION CIRCUIT |
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