The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1987
Filed:
Nov. 02, 1984
Kiyoshi Kamiya, Tokorozawa, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
A synchronous separation circuit comprises a capacitor, one end of the capacitor serving as an input terminal for receiving a synthetic video signal, a first C-MOS inverter, an input terminal of which is connected to the other end of the capacitor, a first resistor, one end of which is connected to the other end of the capacitor, a diode, one end of which is connected to the other end of the capacitor, and a second C-MOS inverter, an input terminal of which is connected to the other end of the diode, while an output terminal of which is connected directly or through a second resistor to the input terminal of the second C-MOS inverter, wherein when the synthetic video signal has positive characteristics, a potential at the other end of the first resistor is set to a value equal to or lower than a potential at the input terminal of the second C-MOS inverter, and when the synthetic video signal has negative characteristics, the potential at the other end of the first resistor is set to a value equal to or higher than the potential at the input terminal of the second C-MOS inverter, so as to provide a direct current bias voltage.