Browsing by Author "Chiu, MY"

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Optimal data transfer and buffering schemes for JPEG 2000 encoder
(2003)
Chiu, MY
;
Lee, KB
;
Jen, CW
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
This paper presents optimal data transfer and buffering schemes for JPEG 2000 encoder. The data transfer scheme combines bit-level zero run-length coding and addressing mode to reduce data transfer time between Discrete Wavelet Transform (DWT) and Embedded Block Coding with Optimized Truncation (EBCOT) to 21%. Furthermore, this data transfer scheme also helps in word-to-bitplane data format conversion from DWT to EBCOT. On the other hand, by jointly considering coding flow of both lifting-based DWT and EBCOT with different design parameters, the reduction in total buffer requirement for both DWT and EBCOT can up to a factor of 4.22.
Synthesis and characterization of luminescent polyfluorenes incorporating side-chain-tethered polyhedral oligomeric silsesquioxane units
(2005-02-08)
Chou, CH
;
Hsu, SL
;
Dinakaran, K
;
Chiu, MY
;
Wei, KH
Using Suzuki polycondensation, we have synthesized polyhedral silsesquioxane-tethered polyfluorene copolymers, poly(9,9'-dioctylfluorene-co-9,9'-bis[4-(N,N-dipolysilsesquioxane)aminophenyl]fluorene) (PFO-POSS), that have well-defined architectures. This particular PFO-POSS molecular architecture increases the quantum yield of polyfluorene significantly by reducing the degree of interchain aggregation; in addition, these copolymers exhibit a purer and stronger blue light by preventing the formation of keto defects.