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Ichihiko TOYODA
Article type: Article
Session ID: 10-7
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Three-dimensional MMIC technology developed by NTT provides a new MMIC design concept as well as cost-effective MMICs. This paper describes NTT's challenge to user-designed custom MMICs using this new design methodology.
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Yunju CHEN
Article type: Article
Session ID: 10-8
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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This paper describes the case how Panasonic develops its own mobile computer technology through integrating inherent and outside resources.
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Article type: Appendix
Pages
App11-
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Keiichiro KAGAWA, Jun TANIDA
Article type: Article
Session ID: 11-1
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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A passive optical ID composed of a recursive reflection sheet, wavelength selection filters, and an ID code mask is read out by a high-speed regional-readout CMOS imager after wavelength to time conversion.
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Satoshi YAMANAKA, Koji MINAMI, Hiroaki SUGIURA
Article type: Article
Session ID: 11-2
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Recently, high definition and speedup are demanded, in image input machinery such as a copier and a scanner. In a Contact Image Sensor, we realize these demands by arranging plural sensor ICs on a straight line and handling it in parallel, In this report we suggest the new method interpolating gap between sensor ICs.
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Yoshitaka TOYODA, Kozo ISHIDA, Tetsuya KUNO, Hiroaki SUGIURA
Article type: Article
Session ID: 11-3
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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This paper proposed color reproduction methods without an infrared cut filter (IRCF) for digital color cameras. To achieve good color reproduction without an IRCF, we extended the color correction matrix to high degree in order to fit the spectrum sensitivity of the image sensor to the color matching functions. Our experimental results demonstrate better color reproduction using the proposed methods.
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Kaori TAKASHINA, Shinsuke HARA, Takayuki HAMAMOTO
Article type: Article
Session ID: 11-4
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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This paper proposes a method to estimate spectral reflectance of each pixel on a single color image sensor. In this method, it is assumed to take pictures using 4-colore filters. SOCS database is used to improve the estimation accuracy.
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Kenichi NAKAYAMA, Atsunori SHIKINO, Takayuki HAMAMOTO, Kazuya KODAMA
Article type: Article
Session ID: 11-5
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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A method for 3D motion estimation of the image sensor is proposed. We detect the 2D motion of each pixel on a sensor at 1000 fps, and utilize these information to estimate sensor movement. Our method can be implemented in real time, and experimental results showed a favorable estimation performance.
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Hiroaki TAKESHITA, Tomonari SAWADA, Kana ITO, Tomohiro IWAHORI, Shoji ...
Article type: Article
Session ID: 11-6
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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This paper presents a new type of buried photodiode structure for high speed charge transfer .The structure has stepwise n layer and p-well layer.They generate a fringing field in buried photodiode. Fringing field distributions and charge transfer characteristics of the structure are investigated with simulations.
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Tetsuya IIDA, Shoji KAWAHITO, Shinya ITOH
Article type: Article
Session ID: 11-7
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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This paper presents a noise reduction effect in readout circuitry of image sensors with sloped reset operation. A solped contral signal is applied to the reset switch of the amplifier for reducing the reset noise of the amplifier. The sloped reset limits bandwidth of readout circuit and reduces thermal noise from pixel when readout circuitry sampled reset level.
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Tomonari SAWADA, Kana ITO, Masakatsu NAKAYAMA, Sohji KAWAHITO
Article type: Article
Session ID: 11-8
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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In Time-of-Flight(TOF) range image sensors using periodical pulsed light, there is a trade-off between maximum range and range resolution. This paper proposes a technique for improving range resolution without reducing measurement range of the TOF sensor with shifted short light pulses. The technique is tested with an implemented TOF sensor.
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Sanshiro SHISHIDO, Keiichiro KAGAWA, Takashi TOKUDA, Jun OHTA
Article type: Article
Session ID: 11-9
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We have designed and fabricated a low-voltage low-power-consumption CIF (352^H×288^V pixels) size CMOS image sensor using PWM pixel readout scheme with a 1.2-V single-power-supply voltage. We also described some design considerations and formulated about IR drop in PWM sensor.
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Ayato Tagawa, Asako Higuchi, Tetsuya Sugiyama, Kiyotaka Sasagawa, Taka ...
Article type: Article
Session ID: 11-10
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We have performed a preliminary freely-moving experiment with a CMOS image sensor. Based on the result, we designed a thin and long outlined one to observe a deeper region with a less invasion to the mouse's brain.
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Hirofumi Yamada, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta
Article type: Article
Session ID: 11-11
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We propose a polarization analyzing CMOS sensor for microchemistry. In this work, to realize real-time measurement of the optical purity in a microfluidic system, we develop polarization analyzing CMOS sensor with an embedded metal grid polarizer on photodiode array. We examined a highly accurate measurement of optical rotation measurement with the sensor. A new polarization image sensor for high speed measurements was also demonstrated.
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J. Yonai, T. Arai, K. Kitamura, T. Hayashida, H. Maruyama, T. Kurita, ...
Article type: Article
Session ID: 11-12
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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An ultrahigh-speed, high-sensitivity color camera with a maximum frame rate of 1,000,000 fps that we had developed has 144 frame memories. To take a picture at longer time, we made a trial model camera that has twice as many frame memories by using beam splitter and two ultrahigh-speed, high-sensitivity CCDs.
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S. Aihara, H. Seo, M. Namba, T. Watabe, H. Ohtake, M. Kubota, N. Egami ...
Article type: Article
Session ID: 11-13
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Stacked type image sensor overlaid with two organic photoconductive films which are sensitive to only green and red light was fabricated, and the color separation in the vertically stacked structure was demonstrated.
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Article type: Appendix
Pages
App12-
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Manabu Itsumi
Article type: Article
Session ID: 12-1
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Si wafer defects, produced during insertion/withdrawal into/from furnaces, tend to increase abruptly with increasing diameter of Si wafers. An in-situ observation system is used to quantitatively determine transient deformation of wafers.
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Ayumu HASHIMOTO, Yasuyuki TAKAHASHI, Hisashi MORII, Yoichiro NEO, Toru ...
Article type: Article
Session ID: 12-2
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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CT measurement have a problem that CT measurement takes long time. The cause of that is projection and reconstruction time. We reduce to projection time by low step CT measurement . But this method came up new problem that is low resolution. Our experiment estimated this problem.
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Yoshiaki ONISHI, Zou Wenjuan, Hisasi MORII, Youichiro NEO, Hidenori MI ...
Article type: Article
Session ID: 12-3
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Atomic number CT image was acquired by using the photon counting type radiation line sensor and the commercial X-ray tube. It aimed at the discriminating of the light element material for the explosive inspection in the luggage at the airport.
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Kazuya OKABE, Hisasi MORII, HIDENORI Mimura, TORU Aoki
Article type: Article
Session ID: 12-4
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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This resarch use CdTe as X-ray detector. Generating career X-ray incident detector by each size width of depletion layer accumulate capacitor, this research purpose is to infer X-ray energy spectrum from accumulated career.
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Bunji SHINOMIYA, Hisashi MORII, Akihumi KOIKE, Yoichiro NEO, Hidenori ...
Article type: Article
Session ID: 12-5
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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When traditional signal-processing algorithm of photon-counting X-ray sensor was used in high count rate, energy resolution was decreased because of the pile-up phenomenon. We researched signal-processing algorithm using the output waveform from the CdTe detector. As a result, decreasing energy resolution in the pile up was improved.
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Masashi NAKAGAWA, Hisashi MORII, Katsumi MATSUBARA, Susumu YAMASHITA, ...
Article type: Article
Session ID: 12-6
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We have proposed the CdTe X-ray imaging sensor in a one-pixel which is driven by electron beam from field emitter arrays (FEA). In this paper, we have constructed the X-ray image sensor which consists of a Schottky CdTe diode and a 12 x 12 matrix FEA.
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Kenji KIKUCHI, Tomoki MATSUBARA, Yuji OHKAWA, Kazunori MIYAKAWA, Shiro ...
Article type: Article
Session ID: 12-7
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We enhanced the hole-injection blocking structure in a high-gain avalanche rushing amorphous photoconductor (HARP) film by introducing a new process to the CeO_2 layer deposition. With the new CeO_2 layer, the dark current of the HARP film reduced and the maximum avalanche multiplication factor was improved twice successfully.
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Y. Honda, Y. Takiguchi, M. Nanba, T. Watabe, N. Egami, K. Miya, K. Nak ...
Article type: Article
Session ID: 12-8
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We propose new operation methods of a FEA-HARP (Field Emitter Array-High-gain Avalanche Rushing amorphous Photoconductor) image sensor for maintaining picture quality even when strong light enters the sensor. Our experimental results revealed that the generation of blooming could be suppressed by using new operation methods.
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Article type: Appendix
Pages
App13-
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Kota HIYAMA, Yuhei KURATOMI, Baku KATAGIRI, Tohru KAWAKMI, Tatsuo UCHI ...
Article type: Article
Session ID: 13-1
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
CONFERENCE PROCEEDINGS
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Recently projection displays using laser light sources are drawing consierable attention due to high image qualities and low enegy consumption. But when using lasers for projections, it is important to suppress speckles. We established a speckle model through actual observations, and investigated the effectiveness of speckle reduction of moving diffusers.
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Takao ENDO, Yuzo NAKANO
Article type: Article
Session ID: 13-2
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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PTV screen mainly consists of two periodical components: (a) circular Fresnel lenses and (b) parallel cylindrical lenses. Moire pattern is the result of the interference between above two patterns. In this paper, we describe screen designs for reducing moire patterns to an acceptable level.
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Rena MURASE, Kuniko KOJIMA, Akihiro YAMADA, Hiroshi KIDA, Hidehiko HOR ...
Article type: Article
Session ID: 13-3
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We have developed a Lens-shiftable projector using a non-telecentric optical system. It permits not only to align the image display position flexibly, but also to offer bright and high-contrast images with a compact structure.
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Eiji NIKURA, Atsushi MICHIMORI, Hiroaki SUGIURA
Article type: Article
Session ID: 13-4
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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For Projection TV (PTV), it is important to make the design thin. However, it is worried that the rigidity is impaired for slim design PTV. Then, we simulated so that the slim design PTV may become a high rigidity structure by using the structural analysis.
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Koji EMOTO, Akichika SHIOMI
Article type: Article
Session ID: 13-5
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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This paper proposes an image separation technique that uses multi-sections exposed image. The proposal technique improved the brightness of the background image after image separation more than the previous technique.
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Mitsuhiro YOMORI, Takeshi MARUTA, Masao MIYAMOTO, Akifumi KOIKE, Yoich ...
Article type: Article
Session ID: 13-6
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Compared with analog hologram used by sensitive material, Computer Generated Hologram (CGH) has possibilities of reconstruct animation in real time. But analog hologram can record fringe pattern in the direction of thickness, digital hologram can't it. Therefore we fabricate CGH used by femto second laser for verify the thickness hologram.
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Article type: Appendix
Pages
App14-
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Akihiro NAGASE, Masako ASAMURA, Jun SOMEYA, Hiroaki SUGIURA
Article type: Article
Session ID: 14-1
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We have studied a tone reproduction technique for display, hi this paper, we proposed the new algorithm which reduced the false contour and the noises without blur.
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Yoshiaki OKUNO, Takashi NAKANO, Masahiko YOSHIYAMA, Junta ASANO
Article type: Article
Session ID: 14-2
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We have developed a gradation quality expansion method for FPDs which support more than 8-bits images. We have confirmed that this method can improve smoothness in gradation area and reduce degradation in texturing area.
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Noritaka OKUDA, Akihiro NAGASE, Jun SOMEYA, Koji MINAMI, Hiroaki SUGIU ...
Article type: Article
Session ID: 14-3
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
CONFERENCE PROCEEDINGS
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We improved the encode algorithmth of high compression feedforward driving(hcFFD). This technology can reduce the color noise caused by encoding.
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Yuko MASAKURA, Tohru TAMURA, Kunihiko NAGAMINE, Satoshi TOMIOKA
Article type: Article
Session ID: 14-4
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We conducted an experiment to evaluate 30 artificial indistinct Mura images with different five forms, two sizes, and three contrasts against background. The size and contrast of Mura would effect on subjective evaluation for Mura image, and there would be interaction between form and size of Mura.
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Takenobu USUI, Keiji ISHII, Yoshikuni HIRANO, Yoshimichi TAKANO, Yukio ...
Article type: Article
Session ID: 14-5
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
CONFERENCE PROCEEDINGS
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We estimated the reproduction image quality on plasma display panels by scanning multi-line simultaneously. As result, the image degradation rise significantly when scanning multi-line simultaneously at a subfield of long emission periods. In addition, the minimum error method is effective to improve image quality at the simultaneous scanning multi-line.
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Masafumi TAKEDA, Masayoshi NAGAO, Tomoya YOSHIDA, Seigo KANEMARU, Tosh ...
Article type: Article
Session ID: 14-6
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
CONFERENCE PROCEEDINGS
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The emission current significantly decreases under the focused condition for a conventional double-gated field emitter. We have fabricated the novel double-gated field emitter using RIE and etch-back method. The fabricated double-gated field emitter can focus the electron beam without significant degradation of the emission current.
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Tatsuya TAKEI, Yoshiki NAKAJIMA, Toshimitsu TSUZUKI, Mitsunori SUZUKI, ...
Article type: Article
Session ID: 14-7
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Mobile displays, which are light weight, very thin and flexible, are expected to be suitable for receivers of advanced digital mobile broadcasting. A 5.8-inch in diagonal WQQVGA flexible OLED display driven by low-voltage operation OTFTs was fabricated, and displayed a color moving picture.
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Yuji OHNO, Takahiro ISHINABE, Tetsuya MIYASHITA, Tatsuo UCHIDA
Article type: Article
Session ID: 14-8
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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A new method for measuring the ordinary and extraordinary refractive indices of liquid crystal materials was devised by considering the multiple reflections and interference in the liquid crystal cell. The refractive indices can be obtained from the numerical fitting between measured values and calculated values of the amplitude ratio at one incidence and phase retardation at three incidences. We experimentally confirmed the validity of our new method and this method is effective for the design of high-quality liquid crystal displays.
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Article type: Appendix
Pages
App15-
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Makoto SATO, Masakatsu TANAKA, Satoshi IZUMIDA, Minoru YAMAMOTO, Tetsu ...
Article type: Article
Session ID: 15-1
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We have studied a re-transmission efficiently methods for one-seg service under poor reception condition areas where the DTTB wave cannot be received directly. We propose a method of Only Qne-Seg re-transmitted. In this papers, We describes the fields trial results in Hokuriku areas.
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Yoshikazu NARIKIYO, Raita YAMASAKI, Kenichi TSUCHIDA, Masayuki TAKADA, ...
Article type: Article
Session ID: 15-2
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We are studying a diversity receiving system on high speed mobile reception. We measured the filed strength by setting up receiving antennas on both sides of the window in a bullet train. This report shows that there is a difference between reception levels of two antennas.
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Raita YAMASAKI, Yoshikazu NARIKIYO, Kenichi TSUCHIDA, Masayuki TAKADA, ...
Article type: Article
Session ID: 15-3
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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In high-speed mobile reception of HDTV digital terrestrial broadcasting, a reception performance is deteriorated by multipath fading. Space diversity technique is effective to compensate the multipath fading. In this paper, we show the results of mobile reception experiments on a bullet train with 4-branch space diversity. We obtained that the time ratio for 64QAM-OFDM was 45%, and that for QPSK-OFDM was 72%, in the total of all mesurement routs.
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Hideaki TANIOKA, Ryou SASAOKA, Masaki MIYAMOTO, Shunji NAKAHARA, Toshi ...
Article type: Article
Session ID: 15-4
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We confirmed that the deterioration of DTTB signal transmitted from the Kochi station at the Tosacho relay station is caused by the unknown delay signals. These delay signals are considered of the reflection wave by ships on the ocean and the reflection loss is estimated to be about 30 dB.
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Hiroshi NAKAMURA, Hiroto UEDA, Daisuke CHUREI, Shunji NAKAHARA, Toshia ...
Article type: Article
Session ID: 15-5
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
CONFERENCE PROCEEDINGS
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We have measured the field strength of Digital Terrestrial Broadcasting using Gap-Filler in various areas of different condition The experimental results show that the Gap-Filler covers the radius of approximately 1km to 2km
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Article type: Appendix
Pages
App16-
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Hitoshi SANEI, Masao YAMAMOTO, Mikio MAEDA
Article type: Article
Session ID: 16-1
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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We developed friendly remote control system for data broadcasting viewing. Only by touching the image or text on paper with a pen-shaped scanner, the target data broadcasting program is displayed in the television.
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Hiroto UEDA, Masahiro NAKAMURA, Isao SEKINE, Syunji NAKAHARA
Article type: Article
Session ID: 16-2
Published: August 01, 2008
Released on J-STAGE: May 24, 2017
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Large fluctuation of field-strength is frequently caused by long-range sea-path propagation. This paper describes the result of the field-strength measurement of DTTB signals transmitted from Niigata main station at Takada relay station. Degradation of the received signals was also discussed. Necessity to improve signal quality is proposed for long-range sea-path propagation.
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