公开(公告)号：WO1988007289A1

公开(公告)日：1988-09-22

申请号：PCT/US1988000253

申请日：1988-01-28

Applicant: HUGHES AIRCRAFT COMPANY

Inventor： HUGHES AIRCRAFT COMPANY ,  UNDERWOOD, George, D.

IPC: H03K05/05

CPC classification number: H03K3/017 ,  H03K5/05 ,  H03K5/131 ,  H03K2005/00234 ,  H03K2005/00254

Abstract: A method and apparatus for obtaining high frequency resolution of a low frequency data signal are provided. The invention comprises a low frequency select logic (27) for generating the data signal having low frequency resolution, low frequency state machine logic (29) for determining whether the data signal is resolved to predetermined high frequency resolution characteristics and circuitry for generating a correction signal to modify the data signal to high frequency resolution, and high frequency logic (17) for modifying the data signal in response to the low frequency correction signal. The high frequency logic (17) operates to selectively modify the path of low frequency data in response to the correction signal to modify the low frequency data signal to obtain high frequency resolution .