Search Results 1-20 of 41

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  • A Study on Fault Tolerant Test Pattern Generators for Reliable Built-in Self Test  [in Japanese]

    FUKAZAWA Yuki , IWAGAKI Tsuyoshi , ICHIHARA Hideyuki , INOUE Tomoo

    BIST回路(テスト生成器や応答圧縮器など)の故障は,被テスト回路に対するテスト実行結果の判定を誤らせる可能性があり,歩留まりの低下や市場不良の増加の原因となる.仮にBIST回路に対して耐故障設計が施されていれば,BIST回路に故障が発生したとしても無故障時と同様の期待動作が可能となり,組込み自己テストによるテスト実行結果はより高信頼となる.本論文では,高信頼組込み自己テストを実現するために2種類 …

    IEICE technical report. Dependable computing 112(102), 15-20, 2012-06-15

    References (13)

  • DC-Free Four-Ary $(2,8)$ Run-Length Limited Code for Multi-level Recording Channels

    Hu Heng , Pei Jing , Xiong Jianping , Ni Yi , Pan Longfa , Hu Hua

    … A new high efficient DC-free $(2,8)$ run-length limited (RLL) code for four-level optical recording channels is proposed. … The proposed code can be represented by a finite state diagram (FSM) with three states and implemented easily. … The code rate and density ratio of the code are 5/6 bits/symbols and 2.50 bits/minimum-recorded-mark, respectively. …

    Jpn J Appl Phys 45(7), 5786-5790, 2006-07-15

    JSAP DOI References (10)

  • DC-Free Coding of Run-Length-Limited Codes for Multi-Level Optical Recording Systems

    Lee Joohyun , Lee Jaejin

    … Optical storage systems require the channel data sequence having DC-free characteristic. … DC-free coding schemes for binary sequence are difficult to apply directly for high-rate multi-level optical recording systems. … Thus, we present an effective coding scheme that DC-content is sufficiently controlled by inserting redundancy bits less than 1.25% for multi-level optical recording systems. …

    Jpn J Appl Phys 45(2B), 1097-1100, 2006-02-15

    JSAP DOI

  • Modulation Codes for Multi-wavelength and Multi-Level Photochromic Optical Recording Channel

    Hu Hua , Xiong Jianping , Xu Duanyi , Qi Guosheng

    … An example of 2-D $\mathrm{RLL}(1,1,6;2)$ code is shown to effectively combat the crosstalk in a two-wavelength recording model. … Then, a DC-free four-ary $\mathrm{RLL}(2,8)$ code is designed with code rate of 8/10 (bits/symbol), and a partial-response maximum-likelihood (PRML) detector is used for the four-level $\mathrm{RLL}(2,8)$ modulation recording channel. …

    Jpn J Appl Phys 45(2B), 1090-1096, 2006-02-15

    JSAP DOI

  • Consideration of code for multi-layer optical disk  [in Japanese]

    MAEDA Takeshi , SUGIYAMA Takahisa

    光ディスクの大容量化のために、2層DVD-ROMを契機に再生専用型光ディスクから書き換え形光ディスクヘと多層化の研究開発が加速している。多層化ディスクは単層ディスクにはない、新規の課題がある。その中の一つには読み出している層からのデータに、隣接する層からのデータが洩れこむ(層間クロストーク)が信号処理系とスポット制御系に重大な影響を及ぼす。これを解決する方法として、光学系とディスク構造についての提 …

    IEICE technical report. Component parts and materials 104(287), 39-44, 2004-09-03

    References (3)

  • A Design for a New Minimum-Bandwidth Line Code of MB810+

    LEE ChanGoo , KIM Dae Young

    … In this paper, we propose a new minimum-bandwidth line code, MB810+ (MB810 plus), which is designed by statistically controlling the ASV (Alternate Sum Variation) or the DSV (Digital Sum Variation) of a line code. … The proposed MB810+ retains dc-free and minimum-bandwidth characteristics, whereas it consumes only 2k gates for implementing the encoder and decoder, respectively. …

    IEICE transactions on communications E86-B(4), 1419-1422, 2003-04-01

  • Test Response Compression Using Huffman Coding  [in Japanese]

    SHINTANI Michihiro , OHARA Toshihiro , ICHIHARA Hideyuki , INOUE Tomoo , TAMURA Akio

    大規模LSIのテストデータの増加が原因で生じる,テスト実行時間の増加やテスタメモリの不足などの問題を軽減するため,被テスト回路内部でテストデータを圧縮・展開する手法が期待されている.本論文では,テストデータ圧縮・展開手法で利用可能な,ハフマン符号を用いたテスト出力応答の圧縮手法を提案する.提案手法では,正常な出力応答ベクトルだけでなく,誤り出力応答ベクトルも対象として符号化を行うため,応答圧縮によ …

    IEICE technical report. Dependable computing 102(479), 35-40, 2002-11-21

    References (17) Cited by (1)

  • A New Coding Technique for High Rate DC-Free Multimode Code Design

    Lee Jun , Lee Jaejin

    Japanese Journal of Applied Physics 41(Part 1, No. 3B), 1760-1762, 2002-03-30

    DOI

  • Construction of Efficient Dc-Free Runlength-Limited Codes for Optical Recording

    Immink Kees A. Schouhamer , Kim Jin-Yong , Suh Sang-Woon , Ahn Seong Keun

    … We will report on new dc-free runlength-limited codes (DCRLL) intended for the next generation of digital versatile disc (DVD). …

    Jpn J Appl Phys 41(3B), 1777-1780, 2002-03-30

    JSAP References (8)

  • A New Coding Technique for High Rate DC-Free Multimode Code Design

    Lee Jun , Lee Jaejin

    … This paper proposes a new coding technique for constructing high rate DC-free multimode codes using interleaved scramble (IS) algorithm.The advantages are (1) less system complexity and decoding time, (2) reasonable DC suppression and (3) small error propagation compared to conventional method. …

    Jpn J Appl Phys 41(3B), 1760-1762, 2002-03-30

    JSAP J-STAGE References (7)

  • Reliable Addressing Scheme with Robust Synchronization Feature for Wobble-Groove Recording

    Kurokawa Takahiro , Miyamoto Harukazu

    Code symbols with sharp autocorrelation are used for wobble waveform allocation. … The scheme employs redundant allocation of synchronization codes, a DC-free wobble waveform with a stable carrier signal, and a majority detection method based on an M-sequence symbol. …

    Jpn J Appl Phys 41(3B), 1747-1748, 2002-03-30

    JSAP J-STAGE

  • Optical Memories. Construction of Efficient Dc-Free Runlength-Limited Codes for Optical Recording.

    Immink Kees A. Schouhamer , Kim Jin-Yong , Suh Sang-Woon , Ahn Seong Keun

    … We will report on new dc-free runlength-limited codes (DCRLL) intended for the next generation of digital versatile disc (DVD). …

    Japanese Journal of Applied Physics 41(3B), 1777-1780, 2002

    J-STAGE

  • Two-Dimensional Balanced Codes with Input Constraints in Three Directions  [in Japanese]

    ICHIHASHI Tatsuhiko , KAMABE Hiroshi

    近年, 情報をより高密度に記録するため2次元的な記録の研究が行なわれている.一般に2次元符号は配列で行と列に制約が課されるが, 本稿では3方向に制約を課す新たな2次元符号を提案する.また記録符号の制約の一つであるバランス制約に着目し, 3方向にバランス制約を満たす符号の符号化法を提案する.そしてこの符号化法から得られた結果からその符号化率, 符号のキャパシティを考察する.

    IEICE technical report. Information theory 100(544), 1-8, 2001-01-09

    References (8)

  • Trellis, Multilevel, and Turbo Codes with DC-Free Characteristic

    JEONG Chang Ki , JOO Eon Kyeong

    DC-free error-correcting codes based on partition chain are presented in this paper. … The partition chain can be constructed from code partition chain of Reed-Muller codes. … The trellis and multilevel code structure can be used to design the DC-free error-correcting codes. …

    IEICE transactions on fundamentals of electronics, communications and computer sciences 83(12), 2706-2714, 2000-12-01

    References (16)

  • Comparison of Hardware Complexity between Convolutional Guided Scrambling and Galois-Field Addition Guided Scrambling for Digital Recording

    KUNISA Akiomi

    … The guided scrambling (GS) coding technique is used to control the runlength within code blocks, such as d or k, as well as to suppress the DC component. … It achieves a code rate very close to the channel capacity. …

    The Journal of the Institute of Image Information and Television Engineers 54(7), 1079-1088, 2000-07-20

    J-STAGE References (18)

  • A Comparison of Two Coding Schemes for Generating DC-Free Runlength-Limited Sequences

    Wilson Wang Yong Hong , Immink Kees A. S. , Xi Xu Bao , Chong Chong Tow

    … We report on the performance assessment of two methods for generating DC-free runlength-limited sequences. … The second method can only be used if the $(d,k)$ encoder satisfies the parity preserving condition, i.e., data words and code words of that code must have the same parity. … In the article we describe in detail an example of a parity preserving (1, 8) code. …

    Jpn J Appl Phys 39(2B), 815-818, 2000-02-28

    JSAP References (4) Cited by (2)

  • A Comparison of Two Coding Schemes for Generating DC-Free Runlength-Limited Sequences.

    Wilson Wang Yong Hong , Immink Kees A. S. , Xi Xu Bao , Chong Chong Tow

    … We report on the performance assessment of two methods for generating DC-free runlength-limited sequences. … The second method can only be used if the (d,k) encoder satisfies the parity preserving condition, i.e., data words and code words of that code must have the same parity. … In the article we describe in detail an example of a parity preserving (1, 8) code. …

    Japanese Journal of Applied Physics 39(2B), 815-818, 2000

    J-STAGE

  • The Asymptotic Property of the Rate of Two Dimensional Balanced Code  [in Japanese]

    ICHIHASHI Tatsuhiko , KAMABE Hiroshi

    … 本稿では記録符号の制約の1つであるDCフリー制約に着目し, その2次元へ拡張について考察する. …

    IEICE technical report. Information theory 99(235), 43-47, 1999-07-23

    References (3)

  • An anti-multipath CDMA System using Complementary Code Sequences with Dummy Chips

    SHIBATANI Masao , KUROYANAGI Noriyoshi , MATSUFUJI Shinya , SUEHIRO Naoki

    相補系列より構成される直交符号系列を拡散符号として用いた場合、受信機の整合フィルタ出力に含まれる受信交流雑音成分を推定することが可能であるが、直流雑音成分の推定は困難である。そこで、受信直流雑音成分を除去するためにダミーチップを直交符号系列に挿入し、更にマルチパスの影響を軽減するためにガード用ダミーチップを付加する修正相補系列の構成法の検討を行なった。受信機では,不必要なダミーチップを除去し、希望 …

    Technical report of IEICE. RCS 98(601), 19-24, 1999-02-18

    References (7)

  • An anti-multipath CDMA System using Complementary Code Sequences with Dummy Chips

    Sibatani Masao , Kuroyanagi Noriyoshi , Matsufuji Shinya , Suehiro Naoki

    相補系列より構成される直交符号系列を拡散符号として用いた場合、受信機の整合フィルタ出力に含まれる受信交流雑音成分を推定することが可能であるが、直流雑音成分の推定は困難である。そこで、受信直流雑音成分を除去するためにダミーチップを直交符号系列に挿入し、更にマルチパスの影響を軽減するためにガード用ダミーチップを付加する修正相補系列の構成法の検討を行なった。受信機では,不必要なダミーチップを除去し、希望 …

    Technical report of IEICE. SST 98(595), 19-24, 1999-02-18

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