Title :
Digital controlled analog architecture for DCT and DST using capacitor switching
Author :
Basu, Arindam ; Mal, Ashis Kumar ; Dhar, Anindya Sundar
Author_Institution :
Dept. of Electron. & Electr. Commun. Eng., IIT, Kharagpur, India
Abstract :
This paper describes a sampled analog architecture, for computing DCT or DST, using switched capacitor principle with capacitance switching. The input sample stream is applied to an array of capacitors and multiplied by all the DCT/DST coefficients concurrently using capacitor ratios. These capacitors are switched properly with the help of a switching matrix, to realize switched capacitor integrators for performing necessary addition/subtraction. Proposed architecture simple, regular with lower gate count may be used for online computations.
Keywords :
capacitor switching; capacitors; discrete cosine transforms; integrating circuits; switched capacitor networks; DCT; DST; capacitor switching; capacitors array; digital controlled analog architecture; switched capacitor integrators; switching matrix; Analog computers; Capacitors; Clocks; Communication switching; Computer architecture; Digital control; Discrete cosine transforms; Kernel; Switches; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1329270