Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2005-07-05
2005-07-05
Ngo, Chuong Dinh (Department: 2124)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S305000
Reexamination Certificate
active
06915319
ABSTRACT:
The present invention relates to an interpolation method and an interpolation apparatus for a digital audio signal or a digital image signal that has a predetermined sampling cycle and quantization bit length, and in particular, to an interpolation method and an interpolation apparatus that can effectively reduce quantization noise in a digital signal that is obtained by information compression. In the method and apparatus according to the present invention, it is made to perform interpolation processing of signal levels in a interpolation object interval in a given digital signal in accordance with a predetermined function curve, which monotonously changes, with the interpolation object interval including a discontinuous part that exists between one signal interval, where the same gradation levels continue, and another signal interval, which is adjacent to the one signal interval and in which the same gradation levels that are different continue.
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International Search Report dated May 7, 2000.
Kabushiki Kaisha Kenwood
Ngo Chuong Dinh
Robinson Eric J.
Robinson Intellectual Property Law Ofice, P.C.
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