Image processing apparatus

Details Image processing apparatus Image processing apparatus

2007-01-15

2011-12-20

Kelley, Christopher S (Department: 2482)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240050, C382S253000

Reexamination Certificate

active

08081679

ABSTRACT:
An image processing apparatus includes a quantizing unit configured to quantize an input moving image signal using a set quantization scale; a coding unit configured to perform variable length coding on an output of the quantizing unit; an activity detecting unit configured to detect an activity of the input moving image signal; a quantization-scale determining unit configured to determine the quantization scale; a changing unit configured to change a value determined by the quantization-scale determining unit, and to set the changed value, as the quantization scale; and a filling level detecting unit configured to detect the filling level of a virtual buffer in a decoder which decodes the coded moving image signal, and to control the changing unit such that the degree of change in the quantization scale caused by use of the activity is reduced as the detected filling level decreases.

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patent: 10-224786 (1998-08-01), None
patent: 2004-140867 (2004-05-01), None
patent: 2005-0005862 (2005-01-01), None

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