Document Type and Number:
Japanese Patent JPS5057570
Kind Code:
A
Abstract:
An apparatus is disclosed for producing an output signal as a function of the phase difference between two input signals of the same frequency. A signal generator is responsive to one of the input signals to produce a ramp function signal having a zero magnitude located approximately in the center of said ramp function. A first sample circuit samples the ramp function in response to the first input signal to produce a control signal. A control circuit is responsive to the control signal and connected to the signal generator for synchronizing the zero magnitude of the ramp function with a predetermined point in each period of the first input signal. Consequently, there is a fixed relationship between the ramp function and the first input signal which is adaptively maintained by the control circuit. A second sample circuit samples the ramp function in response to the second input signal and produces an output signal representing the phase difference between the input signals.
More Like This:
| JPS54115281 | PHASE DETECTOR |
| JPS58156227 | PHASE COMPARATOR |
Application Number:
JP10593274A
Publication Date:
May 20, 1975
Filing Date:
September 13, 1974
Export Citation:
International Classes:
G01R25/00; H03D13/00; H03K5/26; H03L7/091; (IPC1-7): H03D3/00; G01R25/00