video coding, low bit rate, morphological segmentation, wavelet A video coding/decoding system for applications requiring low bit rate has been developed. This coding scheme uses an intraframe coder for the initial frame in the video sequence and subsequent frames are coded using an interframe coding method. A wavelet-based technique is used for intraframe coding. For interframe coding, displac...

Postfilters are used in speech decoders to improve speech quality by preserving formant information and reducing noise in the valley regions. In this thesis, a new adaptive least-squares LPC-based time-domain postfilter is presented to overcome problems presented in the conventional LPC-based time-domain postfilter. Conventional LPC-based time-domain postfilter [4] produces an unpredictable spe...

In this paper we propose a new 9 transistor 1-bit full adder. The proposed circuit performs efficiently in subthreshold region to employ in ultra low power applications. The main design objective for this new circuit is low power consumption and full voltage swing at a low supply voltage. The proposed cell also remarkably improves the power consumption, power delay product and has better noise ...

This paper presents a high-speed, low-power and low area encoder for implementation of flash ADCs. Key technique for design of this encoder is performed by convert the conventional 1-of-N thermometer code to 2-of-M codes (M = ¾ N). The proposed encoder is composed from two-stage; in the first stage, thermometer code are converted to 2-of-M codes by used 2-input AND and 4-i...