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Paper Abstract and Keywords
Presentation 2012-12-13 14:00
An Equalizer using Piecewise Linear Function for Holographic Data Storage
Nobuhiro Kinoshita, Tetsuhiko Muroi, Norihiko Ishii, Koji Kamijo, Hiroshi Kikuchi (NHK)
Abstract (in Japanese) (See Japanese page) 
(in English) A holographic data storage has advantages of large capacity as well as high data-transfer-rate because it records or reproduces a two-dimensional data array, which is called a data page, at one light irradiation. During readout, the data page is reproduced by irradiation of light and diffraction in a holographic medium, and is captured by an image sensor. When processing symbol extraction after capturing the data page, the size and position of a symbol in the reproduced data page does not always correspond to the size and position of a pixel in the image sensor. The symbol extraction consequently requires an interpolation including the nearest neighbor, bi-linear, and bi-cubic, which have been generally used for the typical graphics processing. Although the performance of the bi-cubic interpolation is high, the implementation of the bi-cubic in a hardware such as FPGA (field programmable gate array) is subject to cause a lack of multiplier in FPGA resource and to limit the number of parallelization because the bi-cubic requires a heavy use of power of variables. In this paper, we propose an interpolator using a piecewise linear function that approximates bi-cubic function, and present the experimental characteristics of a multistage equalizer that involves a FIR (finite impulse response) filter and the piecewise linear function interpolator.
Keyword (in Japanese) (See Japanese page) 
(in English) Bi-cubic interpolator / Piecewise linear interpolator / FIR filter / Bit error rate / Multistage equalizer / / /  
Reference Info. ITE Tech. Rep., vol. 36, no. 55, MMS2012-21, pp. 5-8, Dec. 2012.
Paper # MMS2012-21 
Date of Issue 2012-12-06 (MMS) 
ISSN Print edition: ISSN 1342-6893
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Conference Information
Committee IEICE-MRIS MMS  
Conference Date 2012-12-13 - 2012-12-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Ehime Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Signal Processing, etc. 
Paper Information
Registration To MMS 
Conference Code 2012-12-MR-MMS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Equalizer using Piecewise Linear Function for Holographic Data Storage 
Sub Title (in English)  
Keyword(1) Bi-cubic interpolator  
Keyword(2) Piecewise linear interpolator  
Keyword(3) FIR filter  
Keyword(4) Bit error rate  
Keyword(5) Multistage equalizer  
1st Author's Name Nobuhiro Kinoshita  
1st Author's Affiliation Japan Broadcasting Corporation (NHK)
2nd Author's Name Tetsuhiko Muroi  
2nd Author's Affiliation Japan Broadcasting Corporation (NHK)
3rd Author's Name Norihiko Ishii  
3rd Author's Affiliation Japan Broadcasting Corporation (NHK)
4th Author's Name Koji Kamijo  
4th Author's Affiliation Japan Broadcasting Corporation (NHK)
5th Author's Name Hiroshi Kikuchi  
5th Author's Affiliation Japan Broadcasting Corporation (NHK)
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Speaker Author-1 
Date Time 2012-12-13 14:00:00 
Presentation Time 30 minutes 
Registration for MMS 
Paper # MMS2012-21 
Volume (vol) vol.36 
Number (no) no.55 
Page pp.5-8 
Date of Issue 2012-12-06 (MMS) 

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