This　paper　is　concerned　with　the　guaranteed　cost　control　problem　of　a　class　of　linear　discrete-time　switched　systems　with　parametric　uncertainties.　Both　state-based　and　dynamic　output-based　robust　stabilization　problems　are　investigated　by　using　mode-dependent　dwell　time　technique.　Different　from　the　existing　results,　here,　the　designed　controllers　are　both　mode-dependent　and　quasi-time-dependent,　which　are　less　conservative.　On　the　basis　of　the　designed　quasi-time-dependent　Lyapunov　functions,　robust　stabilization　criteria　are　presented　for　the　system　under　consideration.　The　solvable　conditions　are　formulated　as　linear　matrix　inequalities,　which　are　thus　easy　to　be　solved.　Some　comparative　simulations　are　given　to　show　the　effectiveness　of　the　proposed　method.