Sanyo Electric Co., Ltd.

Semiconductor Technology Academic Research Center

Kazuhiko Taketa

Shigeyuki Okada

Hideki Yoshikawa

Isao Yasuda

Yorinobu Yoshisato

Kazuhiko Takahashi

Kenji Kubota

Taketo Heishi

Hideki Yamauchi

Nobuharu Suzuki

Toshinori Sueyoshi

Masahiro Iida

Motoki Amagasaki

A reconfigurable logic block has a first circuit that configures an arithmetic circuit and a second circuit that configures a circuit outside of the arithmetic circuit. A plurality of different circuits are configured by changing the settings of predetermined signals in the first and second circuits.

Reconfigurable logic block, programmable logic device provided with the reconfigurable logic block, and method of fabricating the reconfigurable logic block

A wavelet transform unit performs a wavelet transform on original images and a quantization unit quantizes wavelet transform coefficients. A ROI selector selects a region of interest or regions of interest in the original image, and a ROI mask generator generates ROI masks with which the wavelet transform coefficients (which are also called ROI transform coefficients) corresponding to the regions of interest are specified. By referring to the ROI masks, a lower-bit zero substitution unit substitutes low-order bits of non-ROI transform coefficients with zeros. An entropy coding unit entropy-codes the wavelet transform coefficients sequentially from high-order bit-planes, after the substitution. A coded data generator turns coded data into streams together with parameters and then outputs coded images.

Image coding apparatus, image decoding apparatus, image display apparatus and image processing apparatus

In an image coding apparatus, a ROI setting unit sets a ROI region in an image. An entropy coding unit entropy-codes the image. A ROI information coding unit encodes information for specifying the ROI region. A codestream generator generates a codestream in a manner that the coded image and the coded information are explicitly included in the codestream. When a plurality of ROI regions are set in the image, the information may include a degree of priority.

Image coding method and apparatus, and image decoding method and apparatus

An SRAM is used as a pixel buffer which stores a partial image region copied from a frame buffer. A vertical filter reads a pair of target pixels arranged in a vertical direction from the pixel buffer and performs a filtering process of a discrete wavelet transform in the vertical direction. An intermediate result obtained in the filtering process is stored in a register. The vertical filter uses the intermediate result in filtering the next two pixels. A horizontal filter receives two transformed results from the vertical filter and performs a filtering process on the transformed results in the horizontal direction. The intermediate results obtained in the horizontal filtering are also stored in a register and utilized in the next filtering.

Image transformation apparatus and method

A magnetic head which comprises a pair of head chips each composed of a pair of plate-like magnetic cores superposed on and joined to each other with a spacer interposed therebetween and having a gap at the junction, a pair of base plates joined to the pair of head chips individually and positioned on opposite sides of and in parallel to a plane containing the gaps, each of the magnetic core having at one end thereof a head with a small width substantially equal to the width of tacks and an end portion of increased width opposite to the head, a shield member interposed between the head chips at the head portions, a stud portion provided on at least one of the pair of magnetic cores and projecting toward the other core, and a coil provided around the stud portion. A process for producing such magnetic heads wherein the pair of magnetic cores are positioned close to each other, and the gaps are accurately positioned on the same plane.

Magnetic head and process for producing same

A twin head for use in an electronic still camera includes a shield plate, first and second head chips bonded on opposite sides of the shield plate, and first and second reinforcing core members further bonded on first and second head chips, respectively. Each of the first and second head chip members has an elongated face that faces a recording medium and a magnetic gap defined at an intermediate portion of the elongated face. The length Wh of the elongated face is between 0.3 millimeter and 1 millimeter. Each of the first and second reinforcing core members has a coil wound thereon. The first and second head chip members, the shield plate, and the first and second reinforcing core members are bonded together such that the elongated faces of the first and second head chip members are in flush with each other and that the magnetic gaps of the first and second head chip members are aligned to each other.

Method for making a twin head for electronic still camera and a method

A magnetic head which comprises a pair of head chips each composed of a pair of plate-like magnetic cores superposed on and joined to each other with a spacer interposed therebetween and having a gap at the junction, a pair of base plates joined to the pair of head chips individually and positioned on opposite sides of and in parallel to a plane containing the gaps, each of the magnetic core having at one end thereof a head with a small width substantially equal to the width of tracks and an end portion of increased width opposite to the head, a shield member interposed between the head chips at the head portions, a stud portion provided on at least one of the pair of magnetic cores and projecting toward the other core, and a coil provided around the stud portion. A process is also disclosed for producing such magnetic heads wherein the pair of magnetic cores are positioned close to each other, and the gaps are accurately positioned on the same plane.

Growing community of inventors

Gifu, Japan

Kazuhiko Taketa