Image signal processing apparatus

Details Image signal processing apparatus Image signal processing apparatus

2004-12-22

2010-12-21

Ometz, David L (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S441000, C348S458000

Reexamination Certificate

active

07855739

ABSTRACT:
In an image signal processing apparatus, line memories conventionally provided at a latter stage of the apparatus in order to convert a VGA image signal into a CIF image signal are eliminated. Image data of the VGA held in a unit of one line in plural line memories60provided in a digital signal processing circuit are weighted and added in a VLPF62. A factor setting part76of the VLPF62changes weighting factors according to a positional relation between a position of a generation object line of the CIF and a line of the VGA. The weighting factors are determined so that a characteristic of trapping ½ of a vertical sampling frequency fv is also obtained. The VLPF62uses the weighting factors to trap fv/2, and changes the position of the vertical sampling point to a position of each line of the CIF image.

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