A
Akifumi Ide
Researcher at Panasonic
Publications - 26
Citations - 515
Akifumi Ide is an academic researcher from Panasonic. The author has contributed to research in topics: Signal & Luminance. The author has an hindex of 10, co-authored 26 publications receiving 515 citations.
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Patent
Digital video signal recording/reproducing apparatus
Akira Iketani,Chojuro Yamamitsu,Akifumi Ide,Masakazu Nishino,Tatsuro Juri,Hideki Ohtaka,Chiyoko Matsumi +6 more
TL;DR: In this article, a rotary cylinder is used to record digital VCR video and audio signals with a frame frequency fN of 30 Hz or 29.97 Hz, and the rotating frequency of the cylinder is set to 2.5 times fN.
Patent
Compressed video signal recording/variable-speed reproduction apparatus
TL;DR: In this article, a video signal recording/reproducing apparatus which records pictures by compressing the video signal in multiple field units and reproduces an signal by the expansion process is described.
Journal ArticleDOI
An experimental study for a home-use digital VTR
Chojuro Yamamitsu,Akifumi Ide,Akira Iketani,Tatsuro Juri,S. Kadono,Chiyoko Matsumi,K. Matsushita,H. Mizuki +7 more
TL;DR: A modified DCT (discrete cosine transform) has been developed for this system that needs only one-half the number of multipliers of a conventional DCT, making the hardware scale smaller.
Journal ArticleDOI
A Study On Trick Plays For Digital VCR
TL;DR: In this paper, variable length coding is controlled to be completed within a synchronized block, each compression block is constructed of DCT (discrete cosine transform) blocks, which separate each other on the screen.
Patent
Video signal recording/reproducing apparatus
TL;DR: In this paper, a video signal recording/reproducing apparatus which records pictures by compressing the video signal in multiple field units and reproduces the signal by the expansion process, is presented.