Renesas Technology Corp.

Hitachi, Ltd.

Hitachi Ulsi Systems Co., Ltd.

Renesas Eastern Japan Semiconductor, Inc.

Koji Shida

Seiichi Mita

Terumi Takashi

Naoki Satoh

Yoshiju Watanabe

Shoichi Miyazawa

Yasuhide Ouchi

Akihiko Hirano

Ryushi Shimokawa

Yosuke Hori

Masashi Nakamura

Toshihiro Nitta

Hideki Miyasaka

Tomoaki Hirai

Satoshi Minoshima

Takashi Takahashi

Hiroyuki Matsumoto

Tomoo Matsuzawa

Teruaki Odaka

Kenji Hanada

Masaki Nakanishi

Kazutoshi Takashima

Teruyuki Odaka

An image sensor such as the conventional CMOS image sensor, in which automatic controls including so-called automatic iris control and white balance adjustment for adjusting the sensor sensitivity, namely the charge accumulation time in each pixel, according to the brightness of the image sensing ambience are performed, involves the problem that, when the frame rate of the image sensor is slowed to save power consumption, the operation of the automatic control systems will also become slower and the image quality deteriorates. In the invented image sensor system using a CMOS image sensor, while a CMOS image sensor is operated at the full frame rate all the time, a circuit for processing image signals from the CMOS image sensor is operated at a speed close to that of full frame processing only when the power supply is turned on or when the image sensing ambience varies and switched to a lower frame processing speed when automatic controls, including iris control, have become stabilized.

Image sensor system using CMOS image sensor and image sensor apparatus using CMOS image sensor

Turning on and off of the light source illuminating an object to be imaged is judged based on brightness changes in small and large areas set up in the frame and an electric charge storage time for each pixel is set up to be equal to the turning-on-and-off period of the light source or an integral multiple thereof. The charge storage time is changed over responsive to the turning-on-and-off period of the light source or the integral multiple thereof to set up a stored light amount for each pixel stepwise and difference in the stored light amount between steps is interpolated by continuous gain control of read-out signals of pixels.

Imaging system using solid-state CMOS imaging device

A sensor chip and a lens mount accommodating therein the sensor chip are mounted on a surface of a wiring substrate and a lens holder accommodating a lens therein is coupled with the lens mount. On a rear surface of the wiring substrate, a logic chip, a memory chip and a passive component are mounted and they are sealed with a seal resin. An electrode pad of the sensor chip is electrically connected to an electrode on the surface of the wiring substrate via a bonding wire but a stud bump is also formed on the electrode at the surface of the wiring substrate and this stud bump is connected with the bonding wire. On the surface of the wiring substrate, a flexible substrate is bonded with an anisotropic conductive film and a bonding material. When a camera module is to be manufactured, the surface side of the wiring substrate is assembled after the rear surface side of the wiring substrate is assembled.

Manufacturing method of solid-state image sensing device

A signal processing circuit for a magnetic recording/reproducing apparatus, including at least an AGC, a PLL, a LPF, an equalizer circuit and a detection circuit, wherein a coefficient compensation circuit is formed by defining a constitution of the equalizer circuit, an error detection circuit is provided which operates by receiving input from the detection circuit, and the LSI is formed by a plurality of analog and digital chips, and the analog and digital chips are connected by current-output type D/A converters connected to at least the AGC and the PLL.

Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit

Signal processing circuit and information recording/reproducing

Growing community of inventors

Takasaki, Japan

Koji Shida