Quantizing unit setting apparatus and method, coding apparatus and method, and information recording medium
AssigneePioneer Corporation
InventorsSeiji Harada, Koji Matsuura
Life of this patent
Estimating the term…
Abstract
Provided are a quantizing unit setting apparatus that enable suppressing the deterioration in the quality of image after coding in a distribution origin to thereby suppress the deterioration in the quality of image after decoding in a distribution destination. In the quantizing unit setting apparatus, there is equipped a quantizing step setting part in which there is predicted an empty memory space in memory device for temporarily storing the produced coded moving picture, and the empty memory space, if there are coded the original static picture images, there is set the quantizing unit according to the predicted empty memory space so as to prevent the memory device from overflowing.
Claims19
A quantizing unit setting apparatus adapted to a quantizing unit that is used for quantization process, in a case of coding a moving picture including a plurality of original static picture images to produce a coded moving picture including a plurality of static picture image groups each including a plurality of coded static picture images, the apparatus comprising:
- a prediction device for predicting an empty memory space in memory device for temporarily storing the produced coded moving picture consisting of coded the original static picture image and one or a plurality of following original static picture images;
- and
- a setting device for setting the quantizing unit according to the predicted empty memory space so as to prevent the memory device from overflowing.
A coding apparatus comprising:
- the quantizing unit setting apparatus including
- a prediction device for predicting an empty memory space in memory device for temporarily storing the produced coded moving picture consisting of coded the original static picture image and one or a plurality of following original static picture images and
- a setting device for setting the quantizing unit according to the predicted empty memory space so as to prevent the memory device from overflowing;
- a quantizing device for quantizing the moving picture by using the set quantizing unit to produce a quantized moving picture;
- and
- a coding device for coding the produced quantized moving picture.
A quantizing unit setting method, the quantizing unit setting method adapted to a quantizing unit that is used for quantization process, in a case of coding a moving picture including a plurality of original static picture images to produce a coded moving picture including a plurality of static picture image groups each including a plurality of coded static picture images, the method comprising the processes of:
- predicting an empty memory space in memory device for temporarily storing the produced coded moving picture consisting of coded the original static picture image and one or a plurality of following original static picture images;
- and
- setting the quantizing unit according to the predicted empty memory space so as to prevent the memory device from overflowing.
A coding method comprising the processes of:
- setting the quantizing unit, the- setting method including the processes of
- predicting an empty memory space in memory device for temporarily storing the produced coded moving picture consisting of coded the original static picture image and one or a plurality of following original static picture images and
- setting the quantizing unit according to the predicted empty memory space so as to prevent the memory device from overflowing;
- quantizing the moving picture by using the set quantizing unit to produce a quantized moving picture;
- and
- coding the produced quantized moving picture.
An information recording medium, on which a setting a quantizing unit program recorded readable by a computer included in a quantizing unit setting apparatus that sets the quantizing unit that is used for quantization process, in a case of coding a moving picture including a plurality of original static picture images to produce a coded moving picture including a plurality of static picture image groups each including a plurality of coded static picture images, causes said computer to function as:
- a prediction device for predicting an empty memory space in memory device for temporarily storing the produced coded moving picture consisting of coded the original static picture image and one or a plurality of following original static picture images;
- and
- a setting device for setting the quantizing unit according to the predicted empty memory space so as to prevent the memory device from overflowing.
A quantizing unit setting program embodied on computer-readable medium for setting a quantizing unit that is used for quantization process, in a case of coding a moving picture including a plurality of original static picture images to produce a coded moving picture including a plurality of static picture image groups each including a plurality of coded static picture images, causes a computer to function as:
- a prediction device for predicting an empty memory space in memory device for temporarily storing the produced coded moving picture consisting of coded the original static picture image and one or a plurality of original static picture images;
- and
- a setting device for setting the quantizing unit according to the predicted empty memory space so as to prevent the memory device from overflowing.
Dependencies are inferred from the claim text.