Document Type and Number:
Japanese Patent JPS5015531
Kind Code:
B1
Abstract:
A phase detector is disclosed, which is constructed such that a television signal including chrominance signal and color burst signal and a local color subcarrier signal are phase compared to each other by a differential amplifier of transistors. The emitter connected in common of the differential amplifier transistors are connected to a gating circuit, which is on-off controlled such that it is open only during the period of presence of the color burst signal in the television signal. A detection voltage according to the phase difference between the color burst signal and the color subcarrier signal appears at the collector of the transistor differential amplifier.
Application Number:
JP5440570A
Publication Date:
June 05, 1975
Filing Date:
June 24, 1970
Export Citation:
International Classes:
H03L7/085; H03D3/00; H03D13/00; H04N9/45; H04N9/455; (IPC1-7): H04N9/46