List of Publications (Since 1991)  You may need acrobat reader to read the PDF file

June 1991 - September 2000

[1]  B. Arambepola and S. Choomchuay, “Array Architectures for Reed-Solomon Decoding”, Proc. IEEE-ISCAS, Singapore, June, 1991, pp. 2963-2966.

[2]  S. Choomchuay and B. Arambepola, “An algorithm and a VLSI architecture for Reed-Solomon Decoding”, Proc. IEEE-ISCAS, San Diego, U.S.A., May, 1992, pp. 2120-2123.

[3] B. Arambepola and S. Choomchuay, “ Algorithm and Architectures for Reed-Solomon Codes”, GEC Journal of Reseach, Vol. 9, No. 3. 1992, pp. 172-184.

[4]  B. Arambepola and S. Choomchuay, “Algorithms for Block Error Control Codes”, IEE Colloquium on DSP application in communication system, London, March, 1993, pp. 3/1-3/6.

[5]  S. Choomchuay and B. Arambepola, “Algorithms and Architectures for Time-domain Reed-Solomon Decoding”, IEE Proc.-I, Vol. 140, No. 3, June 1993, pp. 189-196. [PDF Full text]

[6]  S. Choomchuay et. al., “Developement of ECG Bed-side Monitor”, Regional Conference on Biomedical Electronics, Bundung, Indonesia, April, 1994, pp.246-250.

[7]  S. Choomchuay, “On the Implementation of Finite Field Operations”, Ladkrabang Engineering Journal, Vol. 11, No. 1, June 1994, pp. 7-16.[PDF Full text]

[8]  S. Choomchuay, “On the Implementation of Finite Field Basis Conversions”, EECON-17, King Mongkut's Institute of Technology, North Bangkok, 1994, pp. 482-486. [PDF Full text]

[9]   S. Choomchuay, “Fast Transform Techniques for RS Codes”, Ladkrabang Engineering Journal, Vol. 12, No. 1, June 1995, pp. 32-41. [PDF Full text]

[10]  S. Choomchuay, “Erasure Correction Techniques in R-S Decoding”, Jounal of King Monkut’s Institute of Technology Ladkrabang, Vol.3, No.2, September 1995, pp.23-30 [PDF Full text]

[11]  S. Choomchuay, “A Parallel Architecture for Reed-Solomon Decoding”, EECON-18, Mahanakorn Univ., November 1995, pp. 794-799. [PDF Full text]

[12] P. Mai-Dee, S. Choomchuay, “A Prime Factor Algorithm for Finite Field Fast Transform”, Ladkrabang Engineering Journal, Vol. 13, No. 1, July 1996, pp. 62-71. (in Thai)

[13] M.Sangworasil, S. Choomchuay, P. Koosirivanichakorn, S. Tritriluxana, “A Linear Approach in Vector Quantisation”, Regional Symposium on Telecommunications Electronics Circuits and Systems (RESTEC ‘96), KMITL, July 1996, pp. C-45 - C-48.

[14] P. Mai-Dee, S. Choomchuay,“Hardware Structure of A Prime factor Finite Field Transform”, EECON-19, Khon-Khan University, November 1996, pp. CP-27 - CP-32. (in Thai) [PDF Full text]

[15] P. Mai-Dee, S. Choomchuay, “Grobner Basis With Queue Approach to Solve Welch-Berlekamp Equation”, 7th Int. Symposium on IC Tech., Sys. and Apps. (ISIC-97), Singapore, September 1997, pp. 573-575. [PDF Full text]

[16] P. Mai-Dee, S. Choomchuay, “The Grobner Basis Architecture for Solving Welch-Berlekamp Equation”, IASTED Int. Conf. On Signal and Image processing (SIP-97), New Orleans USA, December 1997, pp. 263-266. [PDF Full text]

[17] P. Mai-Dee, S. Choomchuay, “Algebraic Geometry Code Decoding Based on Chinese Remainder Theorem”, 1998 IEEE Asia-Pacific Conference on Circuits and Systems (APCCAS-98), Chiangmai, Thailand, November 1998, pp. TP2-4.1 - TP2-4.4. [PDF Full text]

[18]  P. Mai-Dee, S. Choomchuay, “Invisible Edge and Soft Tied in Compaction Strategy”, 1998 IEEE Asia-Pacific Conference on Circuits and Systems (APCCAS-98), Chiangmai, Thailand, November 1998, pp. WT33-2.1 - WT33-2.4. [PDF Full text]

[19]  A Yodtein, S. Choomchuay, “An Efficient Algorithm for VLSI Circuit Partitioning” 9th Int. Symposium on IC Tech., Sys. and Apps. (ISIC-99), Singapore, September 1999. [PDF Full text]

[20]  M. Hirata, Y. Suzuki, M. Yoshida, Y. Arayashiki, M. Teramoto and S. Choomchuay, “A New Same-Bias Voltage Generator for TFT-LCD’s Drive”, 6th International Display Workshop (IDW-99), Sendai, Japan December 1999. [PDF Full text]  (Best Paper Award)

[21]  A Yodtein, S. Choomchuay, “An Improved Simulated Annealing Algorithm for Circuit Partitioning” Int. Symposium on Intelligent Signal Processing and Communication Systems. (ISPACS ‘99), Phuket, Thailand, December 1999. [PDF Full text]

[22]  S. Choomchuay, Y. Suzuki, M. Yoshida, Y. Arayashiki and M. Teramoto “A High-Voltage Generator using CMOS Charge Pump” Int. Symposium on Intelligent Signal Processing and Communication Systems (ISPACS ‘99), Phuket, Thailand, December 1999. [PDF Full text]

October 2000 - September 2003

[23]  M. Hirata, Y. Susuki, M. Yoshida, Y. Arayashiki, M. Teramoto, and S. Choomchuay, “New Bias Voltage Generator for TFT-LCD’s Drivers”, IEICE Trans. Electron., Vol. E-83C, No. 10, October 2000, pp.1579-1583. [PDF Full text]

[24]  P. Mai-Dee and S. Choomchuay, “A Wave-Domino Pipelining By Using Common Clock” Int. Symposium on Intelligent Signal Processing and Communication Systems. (ISPACS ‘2000), Hawaii, USA, November 2000, pp.180 - 183. [PDF Full text]

[25]  B.Sansoda, S. Choomchuay and Y. Susuki, “Comparative Study & Experiment of Various Methods for High-Voltage Generator”, EECON-23, Chiang Mai Univ., November 2000. [PDF Full text]

[26]  B.Sansoda, S. Choomchuay and Y.Susuki, “An On Chip Negative High-Voltage Generator”, 2000 Asia-Pacific Symposium on Broadcasting and Communications (APSBC-2000), KMITL, Bangkok, Thailand, December 2000, pp.74-77. [PDF Full text]

[27]  P. Mai-Dee and S. Choomchuay, “Compactivity Improvement Using Slack Adjustment Technique,” Int. Symposium on Communication and Information Technology, (ISCIT 2001), ChiangMai, Thailand, November 2001, pp.231 - 234. [PDF Full text]

[28]  K. Southysombath, P. Indarack, P. Chantamaly, M. Mangnomek, S. Ikeda,
W. Phromphanich, S. Choomchuay, Y. Nakajima, and M. Moriya, “Problem in Propagation on Thai Television Received in Laos,” Int. Symposium on Communication and Information Technology, (ISCIT 2001), ChiangMai, Thailand, November 2001, pp.546 - 549. [PDF Full text]

[29]  S. Pongyupinpanich and S.Choomchuay, "Composite Field Bit Serial-Parallel Multiplier", Proc. of Information and Computer Engineering Workshop 2002 (ICEP2002), Prince of Songkla University, January 2002, pp.65-69.[PDF Full text]

[30]  S. Choomchuay, P. Pongyupinpanich and K. Hadkhuntod, “An On-chip Data Storage With ElGamal Elliptic Curves Cryptosystem,” Int. Symposium on Communication and Information Technology, (ISCIT 2002), Pattaya, Thailand, October 2002, pp.423 - 426. [PDF Full text]

[31]  S. Pongyupinpanich, S.Choomchuay and K. Hadkhuntod, “An Application of ELGamal Elliptic Curves Cryptosystems in Smart Card,”  EECON-25, Prince of Songkla University, November 2002, pp.46-50. [PDF Full text]

[32]  S. Timakul and S.Choomchuay, "A Bit-Serial Architecture for a Multiplierless DCT," Proc. of  Information and Computer Engineering Workshop 2003 (ICEP2003), Prince of Songkla University, January 2003, pp.178-182. [PDF Full text]  (Best paper Award)

[33]  S.Choomchuay and S. Timakul, "A Bit-Serial Architecture for a Multiplierless DCT," Journal of ICT, 2(1), University UUM, Malaysia, July  2003, pp. 15-30. [PDF Full text]

[34]  S. Timakul, S. Chuntree, and S. Choomchuay, “A Low Complexity Implementation of a Fast BinDCT,” Int. Symposium on Communication and Information Technology, (ISCIT 2003), Songkla, Thailand, September 2003, pp.799-802. [PDF Full text]

October 2003 - September 2005

[35] S. Timakul, W. Pengchan, S. Niumchareon , A. Reungpanich, P. Siamchai, K. Imai, and S. Choomchuay, "An Investigation of Digital Circuit Fabrication on 5 um Poly-Gate CMOS Process," EECON-26, King Mongkut's Institute of Technology, North Bangkok, November 2003, pp. 1303-1308.  [PDF Full text]   

[36] S. Chuntree and S. Choomchuay, "A Bit-Parallel Pipelined Multiplierless DCT," EECON-26, King Mongkut's Institute of Technology, North Bangkok, November 2003, pp. 1173-1178. [PDF Full text]  

[37] P. Noo-intara, S. Chantarawong, and S. Choomchuay, "Architectures for MixColumn Transform for the AES," Proc. of  Information and Computer Engineering Workshop 2004 (ICEP2004), Prince of Songkla University (Phuket Campus), January 2004, pp.152-156. [PDF Full text] 

[38] S. Chantarawong, P. Noo-intara, and S. Choomchuay, "An Architecture for S-Box Computation in the AES," Proc. of Information and Computer Engineering Workshop 2004 (ICEP2004), Prince of Songkla University (Phuket Campus), January 2004, pp.157-162. [PDF Full text]    (Best paper Award)

[39]  S. Chantarawong and S. Choomchuay, "An Architecture for a compact AES System," Proc. of  Electrical Eng./Electronics, Communications, Computer and Information Technology Conference 2004 (ECTI-CON2004), ECTI Association, Thailand, May 2004, pp. 121-124. [PDF Full text]  

[40]  S. Pongyupinpanich and S. Choomchuay, "An Architecture for a SHA-1 Applied for DSA,"  Proc. of  Electrical Eng./Electronics, Communications, Computer and Information Technology Conference 2004 (ECTI-CON2004), ECTI Association, Thailand, May 2004, pp. 133-136. [PDF Full text] 

[41]  S. Pongyupinpanich, P. Noo-intara, and S. Choomchuay, "SHA-1 With On The Fly Round-Word Computation," Proc. of  Electrical Eng./Electronics, Communications, Computer and Information Technology Conference 2004 (ECTI-CON2004), ECTI Association, Thailand, May 2004, pp. 137-140. [PDF Full text]

[42]  S. Choomchuay and S. Pongyupinpanich, "An Architecture for a SHA-1 Applied for DSA," Proc. of  AMOC-2004  Asian International Mobile Computing  Conference 2004 (AMOC-2004), Thailand,  May 2004, pp. 8-12. [PDF Full text] 

[43]  S. Pongyupinpanich, S. Phathumvanh, and S. Choomchuay, “A 32 Bits Architecture for an AES System,” IEEE Int. Symposium on Communications and Information Technologies, (ISCIT 2004), Sapporo, Japan, October 2004, pp.70-73. [PDF Full text]

[44]  S. Timakul and S. Choomchuay, "Near True DCT Binary Approximation for JPEG," EECON-27, Khon Khen University, November 2004, Vol. 2, pp. 205-208.  [PDF Full text]     

[45]  S. Choomchuay, S. Pongyupinpanich, and S. Phathumvanh,  “A Compact 32-bit Architecture for an AES System,”  ECTI Trans. Computer and Information Technology, Vol. 1, No. 1, May 2005, pp.24-29. [PDF Full text]

October 2005 - September 2009

[46]  Chirawat Temi, Somsak  Choomchuay, and Attasit Larsakul, “A Robust Image Watermarking Using Multiresolution Analysis of Wavelet,” IEEE Int. Symposium on Communications and Information Technologies, (ISCIT 2005), Beijing, China, October 2005, pp.603-606. [PDF Full text]

[47]  Saykhong Saynasine, Susumu Ikeda, and Somsak  Choomchuay, “Status and Trend of ICT in Lao PDR,” Proc. of  Electrical Eng./Electronics, Communications, Computer and Information Technology Conference 2004 (ECTI-CON2006), ECTI Association, Thailand, May 2006, pp. 137-140. [PDF Full text]

[48] Atipat Julasayvake and Somsak Choomchuay, "A Combined Technique in Fingerprint Core Point detection," Proc. of  International Workshop on Advanced Image Technology 2007 (IWAIT-2007), Thailand, January 2007, pp. 556-560. [PDF Full text]

[49]  Atipat Julasayvake and Somsak Choomchuay, "AN ALGORITHM FOR Fingerprint Core Point detection," Proc. of  International Symposium on Signal Processing and its Applications 2007 (ISSPA-2007), United Arab Emirates, February 2007. [PDF Full text]

[50]  Keokanlaya Sihalath, Somsak Choomchuay, and Kazuhiko Hamamoto "Core point Identification with Local Enhancement," Proc. of  6th Int. Joint Conf. on Computer Science and Software Engineering (JCSSE-2009), Phuket, Thailand, May 2009. [PDF Full text]

[51]  Keokanlaya Sihalath, Somsak Choomchuay, Satoshi Wada, and Kazuhiko Hamamoto "Performance Evaluation of Field Smoothing Filters," Proc. of  2th Biomedical Engineering International  Conference (BMEiCON-2009), Phuket, Thailand, August 2009. [PDF Full text]

[52]  Chutima Prasartkeaw and Somsak Choomchuay, “A Design of Parity Check Matrix for Irregular LDPC Codes,” Proc. of  Int. Symposium on Communication and Information Technology, (ISCIT 2009), Incheon, Korea, September 2009. [PDF Full text]

October 2009 - September 2010

[53]  Adisorn Keowpakdee and Somsak Choomchuay, "Hard Disk Test Time Improvement: Statistical Process Control and Process Capability Analysis," Proc. of  EECON-32, Mahidol University, October 2009, (PDF Full text; in Thai) 

[54]  Sarun Nakthanom and Somsak Choomchuay, "Reading of a 2D Barcode Attached on a Moving object," Proc. of  EECON-32, Mahidol University, October 2009, (PDF Full text; in Thai) 

[55]  Chutima Prasartkeaw and Somsak Choomchuay, “A Parity Check Matrix Design for Irregular LDP Codes with 2K Block Length,”  Proc. of  2009 International Symposium on Intelligent Signal Processing and Communication Systems, (IEEE-ISPACS 2009), Kanazawa, Japan, December 2009. [PDF Full text]

[56]  Adisorn Keowpakdee and Somsak Choomchuay, "Product Test time Improvement by SPC and PCA: Energy and Cost Savings," Proc. of  International Conference on Embedded Systems and Intelligent Technology (ICESIT 2010), Chiangmai, Thailand, February 2010, [PDF Full text]

[57] Keokanlaya Sihalath, Somsak Choomchuay, and Kazuhiko Hamamoto, "Directional Filtered Fingerprint Images: An Investigation and Evaluation of Minutiae Consistency," Proc. of  International Conference on Green Computing (ICGC 2010) and AUN/SEED-Net Regional Conference on ICT (RC-ICT 2010), Yogjakarta, Indonesia, March 2010. [PDF Full text]

[58] Adisorn Keowpakdee and Somsak Choomchuay, "Products Test Time Improvement: Statistical Process Control and Process Capability Analysis with Non-normal Data,"  Proc. of  International Conference of Business and Industrial Research (ICBIR-2010), Bangkok, Thailand, March 2010, [PDF Full text]

[59] Keokanlaya Sihalath, Somsak Choomchuay, Satoshi Wada, and Kazuhiko Hamamoto, "Fingerprint Image Enhancement With Second Derivative Gaussian Filter and Directional Wavelet Transform," 2010 International Conference on Telecom Technology and Applications (ICTTA 2010), Bali, Indonesia, Indonesia, March 2010. [PDF Full text]

[60] Somsak Choomchuay and Keokanlaya Sihalath, "An Application of Second Derivative of Gaussian Filters in Fingerprint Image Enhancement," Proc. of 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE 2010), Chengdu, China, June 2010. [PDF Full text]

[61] Chalit Chusin, Chutima Prasartkaew, and Somsak Choomchuay, "Non-prime Parameters of LDPC Codes with Symmetrical Sub-matrix," Proc. of 25th Int. Conf. on Circuits/Systems, Computers, and Communications  (ITC-CSCC2010), Pattaya, Thailand, July 2010. [PDF Full text]

[62] Kranob Thongkhome, Chalermwat Thanavijitpun, and Somsak Choomchuay, "AN IMPLEMENTATION OF S-BOX FOR A COMPACT AES SYSTEM," Proc. of 25th Int. Conf. on Circuits/Systems, Computers, and Communications (ITC-CSCC2010), Pattaya, Thailand, July 2010. [PDF Full text]

[63] Chalit Chusin, Chutima Prasartkaew, and Somsak Choomchuay, "A Design of Non-prime LDPC Based on Interleave Modified Array Codes," Proc. of 3rd International Conference on Data Storage Technology (DST-CON2010), Bangkok, Thailand, July 2010. [PDF Full text]

[64] Sarun Nakthanom and Somsak Choomchuay, "A 2D Barcode Inspection Using Template Matching," Proc. of 3rd International Conference on Data Storage Technology (DST-CON2010), Bangkok, Thailand, July 2010. [PDF Full text]

[65] Sangwan Kankonsae, Patcharaporn Choeysuwan, and Somsak Choomchuay, "A 2-Stage Compression for RFID Tags Data," Proc. of 2010 International Workshop on Information Communication Technology  (ICT-2010), Bangkok, Thailand, August 2010. [PDF Full text]

[66] Isara Tanyanon, Sekson Thimakul, and Somsak Choomchuay, "Hardware Design of a Compact LDPC Decoder for Wireless Communications," Proc. of 2010 International Workshop on Information Communication Technology  (ICT-2010), Bangkok, Thailand, August 2010. [PDF Full text]

[67] Poramate Prasarn, Keokanlaya Sihalath, and Somsak Choomchuay, "A Dynamic Enhancement Method for Fingerprint Matching," Proc. of  3rd Biomedical Engineering International Conference (BMEiCON-2010), Kyoto, Japan, August 2010. [PDF Full text]

October 2010 - September 2011

[68] Chalit Chusin, Chutima Prasartkaew, Sekson Thimakul, and Somsak Choomchuay, "A Design of Nonprime Block Irregular LDPC Codes via CRT," Proc. of  Int. Symposium on Communication and Information Technology, (IEEE_ISCIT-2010), Tokyo, Japan, Oct. 2010. [PDF Full text]

[69] Somsak Choomchuay and Chalermpol Kum-in, "Hypertension Surveillance System and Medical Data Search-Sharing System," Proc. of IMS-2010, Bangkok, Thailand, November 2010. [in Thai, PDF Full text]

[70] Patcharaporn Choeysuwan, Manas Sangworasil, and Somsak Choomchuay, "A Technique for Label Text Compression Applied to RFID Passive Tag," Proc. of EECON-33, Chiang Mai, Thailand, December 2010. [PDF Full text]

[71] Isara Tanyanon, Sekson Thimakul, and Somsak Choomchuay, "Hardware Design of a LDPC Decoder With MMS Algorithm," Proc. of EECON-33, Chiang Mai, Thailand, December 2010. [PDF Full text]

[72] Sekson Thimakul, Isara Tanyanon, and Somsak Choomchuay, "AN OVERLAPPING MIN-SUM LDPC DECODER FOR IEEE 802.11N," Proc. of  18th Int. Symposium on Intelligent Signal Processing and Communication Systems (IEEE_ISPACS-2010), ChengDu, China, December 2010. [PDF Full text]

[73] Chalermpol Kum-in and Somsak Choomchuay, "Hypertension Surveillance System and Medical Data Sharing System," Proc. of  Joint Int. Conference on Communication Information Technology, Electrical and Electronic Engineering 2010 (JICTEE-2010), Luang Prabang, Lao PDR, December 2010. [PDF Full text]

[74] S. Choomchuay, S.Wattanasirichaigoon, and  P. Prasart, "A new method for finding the loss core point of a fingerprint image," Proc. of  International Forum on Medical Imaging in Asia (IFMIA 2011), Okinawa, Japan, January 2011. [PDF Full text]

[75] Chalermwat Thanavijitpun, Kranob Thongkhome, and Somsak Choomchuay, "FPGA Implementation of FDE-Portable Hard Disk System," Proc. of The 2011 International Conference on Information and Communication Technology for Embedded Systems (IC-ICTES 2011), Pattaya, Thailand, January 2011. [PDF Full text]

[76]  Chavalit Chiangpiw, Saran Nakthanom, and Somsak Choomchuay, "A Technique for Printed 2-D Barcode Inspection," Proc. of  International Conference on Embedded Systems and Intelligent Technology (ICESIT 2011), Phuket, Thailand, February 2011. [PDF Full text]

[77] Keokanlaya Sihalath, Phonepaseuth Satahack, Somsak Choomchuay, and Khampheth Bounnady, "A STUDY OF FINGERPRINT ENHANCEMENT WITH DIRECTIONAL FILTERING," Proceeding of the 3rd RCICT 2011, Application for Industries and Small Companies in ASEAN Countries, 10 – 11 March 2011, Vientiane, Lao PDR. [PDF Full text]

[78] Poramate Prasarn, Keokanlaya Sihalath, and Somsak Choomchuay, "A COMBINED TECHNIQUE FOR FINGERPRINT MATCHING," Proceeding of the 3rd RCICT 2011, Application for Industries and Small Companies in ASEAN Countries, 10 – 11 March 2011, Vientiane, Lao PDR. [PDF Full text]

 

 

TEXTBOOKS

1. สมศักดิ์  ชุมช่วย "การประมวลสัญญาณเชิงเลขเบื้องต้น", Japan International Cooperation Agency (JICA), 239 หน้า, 2545
2. ประภากร  สุวรรณะ, สมศักดิ์  ชุมช่วย, "วิศวกรรมอิเล็กทรอนิกส์ 1", Japan International Cooperation Agency (JICA), 470 หน้า, 2545