M
Masuo Umemoto
Researcher at Hitachi
Publications - 78
Citations - 501
Masuo Umemoto is an academic researcher from Hitachi. The author has contributed to research in topics: Signal & Communication channel. The author has an hindex of 13, co-authored 78 publications receiving 501 citations. Previous affiliations of Masuo Umemoto include HGST.
Papers
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Patent
Solid-state color imaging device
TL;DR: In this paper, a mosaic color filter consisting of filter elements arranged in correspondence with the respective photosensors is used for color imaging in the horizontal and vertical directions of a solid state color imaging system.
Patent
Solid-state imaging apparatus with fixed pattern noise reduction
Izumita Morishi,Masuo Umemoto,Kazuhiro Sato,Toshiyuki Akiyama,Kenji Takahashi,Nagahara Shusaku +5 more
TL;DR: In this paper, a solid-state imaging apparatus comprising first means for sample-holding spike noise generated from a horizontal switching element constituting the apparatus, second means for sampling spike noise opposite in phase to the first-mentioned spike noise, and third means for adding outputs of the first and second means.
Patent
Method for distributing and recording video signals and an apparatus using the same
TL;DR: In this paper, the luminance and color signals are sampled using a clock generator and dividers, and the resultant signals are coded through a plurality of channels and are recorded in a video tape recorder.
Patent
Code modulation system
TL;DR: In this paper, the code modulation system for converting input data levels into an output signal in the form of code words by providing M input levels among N input levels assigned to input data with stairlike code weights on the basis of the input levels, (N-M) input levels which are the difference between said n input levels and said m input levels are respectively disposed near transition points where said stair-like code weight is changed, and the code weights are provided with hysteresis in the ascent process and the descent process of input data level.
Patent
Dubbing method and apparatus for digital recording reproducing apparatus including direct digital outputs
Masuo Umemoto,Yoshizumi Eto,Miyazaki Shinichi,Hidehiro Kanada,Hitoshi Katayama,Yuichi Michikawa +5 more
TL;DR: In this article, the authors present an apparatus in which a picture signal is converted into digital signals and the digital signals are recorded into a recording medium, and which is suitable to perform dubbing of the digital signal reproduced from the recording medium.