Patent ID: 8514157
Filing Date: 2013-08-20
Classification: G09G

Abstract:
1. An amplifier, comprising: (a) first and second input terminals configured for receiving first and second input signals, respectively; (b) an output terminal for outputting an output signal calculated as responsive to the first and second signals; and (c) a first differential stage including: in case the first and second signals supplied to said first and second input terminals are at second and third levels, respectively, among four different levels of first, second, third and fourth levels in the level order, the output signal at the first level is output from said output terminal; in case the first and second signals supplied to said first and second input terminals are both at the second level, the output signal at the second level is output from said output terminal; in case the first and second signals supplied to said first and second input terminals are both at the third level, the output signal at the third level is output from said output terminal; and in case the first and second signals supplied to said first and second input terminals are at the third and second levels, respectively, the output signal at the fourth level obtained by extrapolation of the third level and the second level at the ratio of one to two is output from said output terminal.