Mentor Graphics Corp. acquired the assets of Los Angeles-based Tanner EDA, the companies announced Tuesday. Terms of the agreement were not disclosed but Tanner EDA's products would be added to Mentor's existing analog/mixed signal verification product line. These products allow designers to test integrated circuits that have analog and digital circuits. "Tanner EDA has built an outstanding reputation as the price performance leader for the design, layout and verification of analog/mixed signal…