Patent ID: 6115071
Filing Date: 2000-09-05
Classification: H04N

Abstract:
Apparatus for compressing video signal in an MPEG like format using both intraframe coding and interframe coding, comprising:a signal input terminal for applying said video signal;a subtractor having a first input terminal coupled to said signal input terminal, a second input terminal and an output terminal for providing residues having a range of amplitude values between relatively larger amplitude values and relatively smaller amplitude values;compression means including transform means, for compressing signal applied thereto, to generate compressed video signal using said both intraframe coding and interframe coding, wherein said residues are included in intraframe coded and interframe coded compressed output data by said compression means;an image signal prediction means, including inverse transform means, responsive to said compressed video signal for generating intraframe and interframe predictive signals representing predictions of video signal being encoded, said predictive signals being coupled to the second input terminal of said subtractor; anda nonlinear element, coupled between the output terminal of said subtractor and said compression means, for attenuating residues having said relatively larger amplitudes less than residues having said relatively smaller amplitudes.