ITE Technical Report
Online ISSN : 2433-0914
Print ISSN : 0386-4227
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Volume 15, Issue 7
Displaying 1-12 of 12 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    1991 Volume 15 Issue 7 Pages Cover1-
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_Cover1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • [title in Japanese]
    Article type: Bibliography
    1991 Volume 15 Issue 7 Pages Misc1-
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_Misc1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    1991 Volume 15 Issue 7 Pages Toc1-
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_Toc1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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  • Coding characteristics of the pixel-adaptive DPCM utilizing the variable-length-codes : The effect of bit-rate prescription
    Masahito SAIGUSA, Shin-ichi ARAZAKI, Sumihisa HASHIGUCHI, Makoto OHKI, ...
    Article type: Article
    1991 Volume 15 Issue 7 Pages 1-6
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_1
    RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS
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    This papaer discribes the coding characteristics of the pixel adaptive DPCM with bit-rate prescription for data compression of still images. In pixel-adaptive DPCM, a pixel is classified into one of the eight groups according to the magnitude of the prediction error of the preceeding pixel, and the number of quantizing bits is varied adaptively to the maximum of the absolute value of the prediciton errors in each block. The coding bit-rate is successfully controlled less than the prescribed value within a tolerance by applying the pre-scanning.
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  • Bit-rate prescription for adaptive run-length DCT coding
    Shin-ichi ARAZAKI, Masahito SAIGUSA, Sumihisa HASHIGUCHI, Makoto OHKI, ...
    Article type: Article
    1991 Volume 15 Issue 7 Pages 7-12
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_7
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    A method of prescription of the bit-rate for the adaptive run-length DCT coding is described. From the total bit-rate estimated from the prescanned data of selected pixels, the step width of quantization of DCT coefficient is determined to make the coded bit-rate within the prescribed quantity. The estimation of the total bit-rate is obtained from simple additions and subtractions in order to make the estimation quickly
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  • Digital Card Camera "VMC-1"
    Fumiyoshi Itoh, Hisashi Niwa, Yoshito Kawagoe, Satoru Takizawa, Sachio ...
    Article type: Article
    1991 Volume 15 Issue 7 Pages 13-18
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_13
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    Our new digital card camera "VMC-1" utilizes (1) a 3-megabyte SRAM card for recording 30 field images in memory by means of adaptive DPCM type of data compression; and (2) a unique CCD read-out method of reading color signals out of an imager in the sequence of red, green, and blue in each line, 〓〓〓〓〓 this camera.
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  • Memory Card Camera and Peripheral Equipments
    Takaaki Suyama, Shinichi Yamaguchi, Setsuo Terasaki, Takeo Saga
    Article type: Article
    1991 Volume 15 Issue 7 Pages 19-24
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_19
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    A memory card camera which records digital still images on a semiconductor memory card and peripheral equipments have been developed. The camera is equipped with a zoom lens of three magnification and contains image data compression LSIs. A memory card camera interface performs a transmission of image data on a memory card into a personal computer. The digital still camera system is expected to be widely utilized as multimedia devices.
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  • Digital Video Camera System
    Hiroyasu Ohtsubo, Masaru Noda, Takuya Imaide, Michio Masuda
    Article type: Article
    1991 Volume 15 Issue 7 Pages 25-30
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_25
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    To meet the needs such as more compact size, better picture quality and new useful functions, we developed a digital video camera system. This paper describes the development of this system. This system consists of a digital signal processing LSI(camera DSP IC), ADC, DAC and CDS/AGC IC. With using this system, we realized a very compact video camera. The camera DSP IC with 30Kgates, 14Kbit RAM and 15Kbit ROM was designed using 1μm CMOS Standard Cell tool.
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  • Chrominance Signal Processing IC for Video Movie
    Norihide Kinugasa, Kouiti Yoshimura, Yoshimitu Saka, Toshiaki Ioi, Hik ...
    Article type: Article
    1991 Volume 15 Issue 7 Pages 31-35
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_31
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    We achieved Low-power consumption by developing a highly rationalized camera signal process block for the chrominance signal processing IC. The process we used for this IC was Bi-CMOS process.
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  • Digital Signal Processing for Consumer-use Single-CCD Video Cameras
    A. TAMURA, A. MORIMURA, K. UOMORI, A. FUJIOKA, M. NAKAYAMA, Y. KITAMUR ...
    Article type: Article
    1991 Volume 15 Issue 7 Pages 37-42
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_37
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    We have developed digital signal processing methods for consumer-use single-CCD video cameras. And then Two types of digital signal processing CMOS LSIs for consumer-use single-CCD video cameras have been developed. The newly developed digital signal processing methods and LSIs can process the image signals that cannot be delt with the conventional analog processors. They make possible higher performance, multiple functions and smaller size of single-CCD video cameras for consumer use.
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  • AUTOMATIC IMAGE STABILIZING SYSTEM BY VIDEO SIGNAL PROCESSING
    Atsushi Morimura, Kenya Uomori, Hirofumi Ishii, Takashi Sakaguti, Yosh ...
    Article type: Article
    1991 Volume 15 Issue 7 Pages 43-48
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_43
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    This is to report on an automatic image stabilizing system for camcorders and VCRs utilizing only video signal processing. Developed technologies for this system are, (1) BERP matching technique which can detects accurate motion vectors with a small scale circuit, (2) adaptive system control algorithm to discriminate moving objecs, (3) suppression of unsteady image motion due to noise. This reports further on new LSIs developed for realizing this system.
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  • [title in Japanese]
    Article type: Appendix
    1991 Volume 15 Issue 7 Pages App1-
    Published: January 25, 1991
    Released on J-STAGE: October 06, 2017
    DOIhttps://doi.org/10.11485/tvtr.15.7_App1
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