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Predecessor
33.18
Displaying 1-14 of 14 articles from this issue
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Article type: Cover
Pages Cover1-
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (14K) -
Article type: Index
Pages Toc1-
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (53K) -
Makoto KOBAYASHI, Seiji TANAKA, Kazuya ODA, Katsumi IKEDA, Kenkichi HA ...Article type: Article
Session ID: IST2009-8/CE2009-28
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA CCD image sensor (named Super CCD EXR) and its imaging system, which can change their movements depending on shooting conditions, has been developed using characteristics of human eyes as hints. They are the switchable system between wide dynamic range, high sensitivity and high resolution mode. As a result of this, the most suitable mode can be selected depending on shooting conditions, like characteristics of human eyes.View full abstractDownload PDF (664K) -
Toshikazu Ohno, Mamoru Arimoto, Hayato Nakashima, Kaori Misawa, Yugo N ...Article type: Article
Session ID: IST2009-9/CE2009-29
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA charge multiplication CMOS image sensor, 10μm cell pitch and CIF format is developed. It can execute the charge multiplication using impact ionization reciprocation within each pixel. The result clearly shows that charge multiplication of 60 times at a short period time of 100 micro seconds increases the SNR in low light level.View full abstractDownload PDF (724K) -
Keiichiro KAGAWA, Ryoichi HORISAKI, Keita FUJII, Yoshizumi NAKAO, Taka ...Article type: Article
Session ID: IST2009-10/CE2009-30
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe are studying improvements on image quality in a thin compound-eye camera. The compound-eye imaging system which consists of a lens array and a single imager has a thinner and more compact hardware than multi-camera systems or light-field camera with a main-lens in front of the lens array. However, the issues of the system are reconstruction of high-resolution images. We have proposed an irregular lens-array arrangement to alleviate degeneration of sampling points for far object and application of super-resolution processing. In this report, we show acceleration of super-resolution processing with GPGPU (general-purpose graphics processing unit). We also propose a high-speed synthesis method of point-spread function describing the imaging system by separating distance-dependent and -independent components.View full abstractDownload PDF (681K) -
Makoto IKEDA, Hirofumi SumiArticle type: Article
Session ID: IST2009-11/CE2009-31
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSApplications of image sensors have been drastically spreading, according to the advancement of image sensor technologies. Image sensors in medical applications are contributing to both shrink of medical equipments and improve of diagnosis accuracy. This presentation covers discussion of ISSCC2009 Medical Image Sensor Forum held in San Francisco in February 2009.View full abstractDownload PDF (1235K) -
Masatomo NAKAZATO, Kazuhisa FUJITAArticle type: Article
Session ID: IST2009-12/CE2009-32
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have developped a novel beam propagation method (BPM) which can handle multiple reflection and suitable for image-sensing devices having multi-layer structure using top-lens, color-fileter, inner-lense, metal-layer(s). This method enables very fast 3D simulation of such devices, about 100-times faster than conventional FDTD method, with small memory requirement. We compared and verify the accuracy of out BPM and FDTD method.View full abstractDownload PDF (725K) -
Shigeki Sawamura, Keiichiro Kagawa, Kiyotaka Sasagawa, Takashi Tokuda, ...Article type: Article
Session ID: IST2009-13/CE2009-33
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn this report, we discuss a CMOS image sensor that can be integrated with various functional circuits, and achieve a low voltage operation and good image quality. In conventional CMOS image sensors, it is difficult to operate at low voltages to lower the power consumption without deterioration of the performance such as dynamic range. Therefore, we have studied pulse width modulation methods on CMOS image sensors, in which the photodiode voltage is convert to the pulse width by applying a lamp signal to the photodiode through an MOS capacitor. A source-common amplifier is used as an in-pixel comparator. We have evaluated basic characteristics of the prototype chip fabricated in a 0.35-μm CMOS technology.View full abstractDownload PDF (636K) -
Jong-Ho Park, Satoshi Aoyama, Takashi Watanabe, Tomoyuki Akahori, Tomo ...Article type: Article
Session ID: IST2009-14/CE2009-34
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA CIS with 13b column-parallel cyclic ADC is presented. Single-ended architecture with lower read noise enables the imager to expand DR up to 71dB. Ultra-low VFPN of 0.1e^-_<rms> is attained by combining with digital CDS, which performs A/D conversion twice in a horizontal scan period. The prototype imager has 7.07V/lx・s sensitivity, 5.6μm ADC pitch, 61μV/e^- conversion gain, 4.7e^-_<rms>, read noise, and less than 0.5 LSB DNL.View full abstractDownload PDF (849K) -
A 1/2.5-in 8M CMOS Image Sensor with a Staggered Shared Pixel Architecture and an FD-Boost OperationNagataka Tanaka, Junji Naruse, Akiko Mori, Ryuta Okamoto, Hirofumi Yam ...Article type: Article
Session ID: IST2009-15/CE2009-35
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA 1/2.5-in 8M CMOS image sensor employs a staggered shared pixel architecture in order to suppress Gr/Gb sensitivity imbalance. It also employs an FD-boost operation using both CGS and CGD of amplifier transistor to make possible both low dark random noise and large FD capability. It achieved Gr/Gb sensitivity ratio of 99.7%, random noise of 2.6e- and pixel capacity of 7.7ke-.View full abstractDownload PDF (783K) -
Shinya Itoh, Md. Shakowat Zaman Sarker, Keita Yasutomi, Koji Okami, Is ...Article type: Article
Session ID: IST2009-16/CE2009-36
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe optical communication system based on LED traffic lights or LED head/tail lights is presently being studied for the realization of the advanced traffic system. For this purpose, devices for finding the area of signal light sources and receiving the optical communication signals are necessary. This paper presents a CMOS Image Sensor for car-to-car and road-to-car optical communications. A prototype sensor with 640x240 image pixels and 640x240 communication pixels is implemented with 0.18μm CMOS technology. As a measurement result, both imaging and optical communication signals are successfully read out. The image signal can be read out at 60fps. The optical signal received with the communication pixel has a sufficient voltage amplitude at the carrier frequency of 1MHz for long range communication of more than 100m.View full abstractDownload PDF (748K) -
Article type: Appendix
Pages App1-
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (80K) -
Article type: Appendix
Pages App2-
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (80K) -
Article type: Appendix
Pages App3-
Published: March 19, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (80K)
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