Fujitsu Corporation

Fujitsu Microelectronics Limited

Masanori Ishizuka

Tatsushi Otsuka

Mitsuhiko Ohta

Tadayoshi Kono

Hirohiko Inagaki

Koichi Yamashita

Katsuki Miyawaki

Takahiko Tahira

Hidenari Nagata

A semiconductor device includes an external pin, a control parameter decision circuit, and a register update circuit. The control parameter decision circuit includes a register and an output selector. The register is initialized in accordance with resetting of the semiconductor device. The output selector, according to a level value of an external input signal supplied via the external pin, selects one of a signal whose level value is set equal to a register value of the register and a signal whose level value is set opposite to the register value of the register, and outputs the selected signal as a control parameter signal. The register update circuit updates the register value of the register when a level value of the control parameter signal need be changed.

Semiconductor device

In an image processing system, an image-input-processing unit divides an original image into portions so as to generate divided original images, and writes the divided original images in an encoder-side memory so that luminance data and chrominance data of each of the divided original images are stored in different storage areas. When predictive coding is performed, the encoding unit divides a reference image into portions so as to generate divided reference images which include information necessary for predictive coding of the divided original images, stores the divided reference images. The decoding unit divides and decodes an inputted encoded image so as to generate divided decoded-data sets, and writes the divided decoded-data sets in a decoder-side memory so that luminance data and chrominance data in each of the divided decoded-data sets are stored in different storage areas.

Image processing system

A moving picture decoding apparatus includes an input part which adds at least one picture tag to a bit stream, having a plurality of pictures, which has been subjected to intraframe or interframe encoding, the picture tag or tags having a value monotonously changing on a picture-by-picture basis, independent of picture content, a buffer memory storing the bit stream and a controller controlling one or more of the plurality of pictures stored in the buffer memory by referring to the corresponding picture tag or tags.

Moving picture decoding apparatus and method

In storing decoded image data of a picture into a memory 23, PTS1 and a valid/invalid flag F1 corresponding to the picture are stored at the top boundary address ADR1 of a storage area within the memory 23, ADR1 is temporarily held in a register circuit 211. whether a read address ADR coincides with any one of addresses ADR1 to ADR3 within the register circuit 211 is detected while sequentially reading data from the memory 23 to display a picture. When coincidence is detected, the data read from the memory 23 are retrieved as PTS and F, and control corresponding to a time difference between STC and retrieved PTS is executed if F indicates validity. When coincidence is not detected, the data read from the memory 23 are used as display decoded image data DAT4.

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Kawasaki, Japan

Masanori Ishizuka