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:
May. 28, 1996
Filed:
Jul. 17, 1995
Takashi Asaida, Kanagawa, JP;
Jun Hattori, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A solid-state image pickup apparatus for generating image pickup signals produced by a solid-state image sensor. The image sensor is driven at a data rate of f.sub.s1 with a predetermined phase. Digital luminance signal Y and two digital chrominance signals C.sub.R, C.sub.B are generated by a first digital processing unit, operated at a clock rate related to the data rate of f.sub.s1, from the digitized image pickup signals. These signals are then converted by a second digital processing unit into signals Y, C.sub.R and C.sub.B having a data rate related to f.sub.s2. The second digital processing unit performs bandwidth limitations on these signals by a half band filter having a passband f.sub.s2, f.sub.s2 /2 and f.sub.s2 /2 and performs data rate conversion of from 2f.sub.s1 to f.sub.s2, from f.sub.s1 to f.sub.s2 /2 or f.sub.s2 /4 and from f.sub.s1 to f.sub.s2 /2 or f.sub.s2 /4, for outputting the low order linear phase finite impulse response sufficient to suppress high-order sideband components in the vicinity of n.multidot.2f.sub.s1, n.multidot.f.sub. s1, and n.multidot.f.sub.s1, (n being a positive integer) in a form that can be down-sampled at f.sub.s2, f.sub.s2 /2 or f.sub.s2 /4 and f.sub.s2 /2 or f.sub.s2 /4. The second digital processing unit can have a simplified construction when the characteristics of the half band filter are used to compensate for the band pass rollover characteristics of the rate-converting filter.