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:
Feb. 20, 1996
Filed:
Jun. 29, 1993
Noriyuki Yamashita, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A signal demodulating apparatus for demodulating FM video signals on which a pilot signal is mixed. The apparatus comprises an input circuit, a first deriving circuit, a pilot canceling signal generating circuit, a mixing circuit, a limiter and a demodulator. The input circuit admits the pilot signal-mixed frequency-modulated video signals. The first deriving circuit connected to the input circuit derives the pilot signal from the pilot signal-mixed frequency-modulated video signals. The pilot canceling signal generating circuit connected to the first deriving circuit generates a pilot canceling signal based on the derived pilot signal. The mixing circuit connected to the input circuit and the pilot canceling signal generating circuit mixes the pilot signal-mixed frequency-modulated video signals and the pilot canceling signal. The limiter connected to the mixing circuit limits the pilot-canceled frequency-modulated video signals to a predetermined level. The demodulator connected to the limiter demodulates the frequency-modulated video signals.