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AssigneeSony Corporation
InventorMasami Ogata
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A decoder de-quantizes quantized data and performs a predetermined operation on the de-quantized data. The decoder de-quantizes the data with a quantizing step size different from the step size used in the quantizing operation. An image encoding apparatus encodes input image data. The encoding apparatus has a motion-vector detector which detects a motion vector from the input image data. A predicted image generator generates predicted image data of the image to be encoded in accordance with the detected motion vector. A differential-image generator generates differential-image data between the predicted image data and the image to be encoded. A transformer transforms the differential-image data to obtain a transform coefficient for the differential-image data. A quantizer quantizes the transfer coefficient to obtain a quantized transfer coefficient. A de-quantizer de-quantizes the quantized transfer coefficient to reproduce the transfer coefficient. A transform-coefficient corrector corrects the reproduced transfer coefficient to obtain a corrected transfer coefficient. An inverse-transformer inverse-transforms the corrected transfer coefficient to reproduce the differential-image data. An image adder adds the predicted image data to the reproduced differential-image data to reproduce the image data for the predicted image data of the image to be encoded.
An image encoding apparatus for encoding input image data, said apparatus comprising:
An image transmitting method for encoding input image data and transmitting the encoded data, said method comprising the steps of:
An image transmitting method for encoding input image data and transmitting the encoded data, said method comprising the steps of:
An image decoding apparatus for decoding encoded image data which includes at least a quantized transform coefficient and a motion vector, said apparatus comprising:
A recording medium decodable by a decoder, said recording medium including encoded data which contains at least a quantized transform coefficient and a motion vector, said encoded data being generated by the steps of:
A recording medium decodable by a decoder, said recording medium including encoded data which contains at least a quantized transform coefficient and a motion vector, said encoded data being generated by the steps of:
Dependencies are inferred from the claim text.