Takuya Imaide

Electronic image stabilizer for video camera use

A compact electronic image stabilizer has been realized on the basis of: (1) scanning area selection of the imager, and (2) motion vector detection. The stabilization rate is 18 dB at 1 Hz. This system is suitable for compact video cameras, but the stabilization rate becomes poor at high frequency. Therefore, an advanced system was also designed. >

An Electronic Variable-Shutter System in Video Camera Use

Since 1981 when we marketed worlds first MOS color video camera,1) we have been continuously improving the performance of this line of video cameras. And in 1986 we have developed an MOS color video camera with high resolution, with high sensitivity, and without smear.2)

Ultra small video camera and a video camera system

Image data photographed by a video camera 20 is compressed by a compression and decompression circuit 5, the compressed image data is recorded in an incorporated type semiconductor memory 6 or disk-type memory 13 fixed in the video camera 20 and the recorded image data is transferred to an external recording device 23. Further, the external recording device 23 records the transferred image data in a data storage while it is being compressed. The video camera 20 receives, decompresses and converts into a television signal the compressed image data read by the external recording device 23 in a reproducing operation. A video camera system capable of recording and reproducing long hours of image data by using a video camera having an ultra small size comparable to that of an 8 mm video cassette can be realized by using such a construction.

A Solid State Color Video Camera with a Horizontal Readout MOS Imager

Since 1981 when we marketed worlds first MOS color video camera1), we have been continuously improving the performance of this line of video cameras in order to match the market needs year by year2). We recognize, however, the performance we have achieved is not satisfactory enough.

An Electronic Zoom Video Camera Using Imager Scanning Control

An electronic zoom system for video camera use has been developed. Zoom ratios were designed to be smoothly changed vertically and horizontally by controlling imager scanning and line memory scanning, respectively. Two CMOS digital LSIs, a scanning pulse generator, and a signal zoom processor were developed for this electronic zoom system. >

A multimedia color camera providing multi-format digital images

A multimedia-use color camera has been developed which provides not only an analog video output but also digital images of various formats such as a CIF (common intermediate format) YC video image and an RGB (red, green, blue) still image with square pixels. In order to generate many image formats flexibly, the following technologies have been developed: (1) programmable CCD (charge coupled device) scanning, (2) programmable interpolation, and (3) programmable color matrix. >

Development of low power MPEG1/JPEG encode/decode IC

We have developed a low power MPEG1 (Moving Picture Expert Group)/JPEG (Joint Photographic Expert Group) encode/decode single chip IC (codec). Using compact ME (motion estimation) process and a power management function we realize a low power consumption. Total power consumption of the codec is 500 mW. Using this chip, we have also developed a compact digital camera for the MPEG1 stream.

A network MPEG camera

A network MPEG camera which can be directly connected to a network for real-time digital video transmission has been developed. The camera works under TCP/IP protocol, and accepts remote control commands from PCs. The command set of the camera includes record/pause command, mode change command, zoom control command, bit rate control command, and so on. The bit rate of MPEG video bit stream can be changed even in the data transmitting and encoding period.

A compact CCD color camera system with digital AWB control

A novel signal-processing LSI was successfully developed for a compact CCD (charge coupled device) camera, where incident YRGB signals were converted into desired Y, C-Y signals, filtered, compressed, and automatically white-balanced. In order to realize accurate inner AWB (automatic white-balance) control, some ideas concerning white detection, white reproduction, and control speed were studied and developed with digital circuits. Specifically, digital circuits made a hold function, more accurate white detection, and a variable speed control possible. >

A Digital Video Camera With An Arbitrary Aspect Ratio

A novel video camera with an arbitrary aspect ratio was developed using newly developed digital signal processing VLSIs. Programmable VLSI circuits are adaptively controlled by a microcomputer. With the arbitrary aspect ratio of this digital camera, the proposed wide-screen CCD (charge-coupled device) imager could compete with conventional 3:4 imagers. >