Clocking signal drive circuit for bucket brigade device

Claim 1

A bucket brigaded device comprising: a first clocking signal generator for generating as its output a first set of complementary first and second clocking signals of opposite phase; a second clocking signal generator for generating as its outputs a second set of complementary first and second clocking signals, said first and second clocking signals of said second set having the same frequency and phase as said first and second clocking signals, respectively, of said first set of clocking signals; a series of successive capacitive storage means for sequentially holding a charge level representing a time sampled input signal, each of said capacitive storage means having a clocking electrode; a series of transfer gates each including transistor means for controlling the transfer of said charge level between successive ones of said capacitive storage means, each of said transistor means being connected between adjoining capacitive storage means and having a clocking electrode; first clocking signal drive means for supplying said first and second clocking signals of said first set to said clockin electrodes of adjacent pairs, respectively, of said capacitive storage means; and second clocking signal drive means for supplying said first and second clocking signals of said second set to said clocking electrodes of said transistor means included in adjacent pairs, respectively, of said transfer gates, whereby the levels of said first set of complementary first and second clocking signals can be determined optimally independently of the levels of said second set of complementary first and second clocking signals for increasing the transfer efficiency of said device.