Apparatus and method for converting signals

Details Apparatus and method for converting signals Apparatus and method for converting signals

2006-01-03

2006-01-03

Philippe, Gims (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C382S236000, C348S451000

Reexamination Certificate

active

06983019

ABSTRACT:
An image-coding format converting apparatus comprising an EMPEG2 image decoder30, a resolution/frame rate converter31, a motion vector converter32, and an MPEG4 encoder33. The EMPEG2 decoder30decodes a bit stream of EMPEG2 image codes, generating an image signal. The resolution/frame rate converter31converts the image signal. The MPEG4 encoder33encodes the output of the resolution/frame rate converter31, generating a bit stream of MPEG4 image codes. In the resolution/frame rate converter31, pixels are added or extracted in accordance with the start position of a macro block, thus adjusting the input image signal to one than can easily be encoded to MPEG4 image codes. The motion vector converter32generates an MPEG4 motion vector from parameters such as an MPEG2 motion vector. The MPEG4 encoder33uses the MPEG4 motion vector to encode the output of the resolution/frame rate converter31.

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