CODING APPARATUS AND METHOD, DECODING APPARATUS AND METHOD, RECORDING MEDIUM, AND PROGRAM

Japanese Patent JP2004056249

A

To efficiently realize more efficient compression of information.

A control unit 212 of an image information coding device 200 sets quantization accuracy on the basis of acquired quality information, a quantization step size supplying unit 213 decides a quantization step width on the basis of a control signal supplied from the unit 212, and a quantizing unit 203 quantizes a conversion coefficient with the quantization step width decided by the unit 213. The quantized conversion coefficient is supplied to a coding unit 204. A coding table supplying unit 214 selects an optimum coding table on the basis of the control signal supplied from the unit 212, and the unit 204 codes the conversion coefficient which has been quantized by using the coding table supplied from the unit 214. This apparatus is applicable to an image information coding device and to an image information decoding device.

JP4139983	A coded stream conversion device, a coded stream conversion method, a stream output device, and a stream output method.
JP2004289790	SYSTEM AND METHOD FOR VIDEO ENCODING ACCORDING TO DEGREE OF MACROBLOCK DISTORTION
JPH06217285	IMAGE ENCODING DEVICE

PETER KUHN
SATO KAZUFUMI
SUZUKI TERUHIKO
HARUHARA OSAMU
YAGASAKI YOICHI

JP2002207835A

February 19, 2004

July 17, 2002

Click for automatic bibliography generation  

SONY CORP

H04N19/126; H03M7/30; H04N19/134; H04N19/136; H04N19/169; H04N19/172; H04N19/174; H04N19/176; H04N19/177; H04N19/196; H04N19/423; H04N19/46; H04N19/503; H04N19/51; H04N19/60; H04N19/61; H04N19/625; H04N19/70; H04N19/91; (IPC1-7): H04N7/30

Yoshio Inamoto

Previous Patent: ANTENNA DEVICE

Next Patent: IMAGING APPARATUS, IMAGE PROCESSING APPARATUS, AND PROGRAM