公开(公告)号：JPH0846510A

公开(公告)日：1996-02-16

申请号：JP16185695

申请日：1995-06-28

Applicant: SGS THOMSON MICROELECTRONICS ,  CONS RIC MICROELETTRONICA

Inventor： TRAVAGLIA FREDERICO ,  LA ROSA MARIA GRAZIA ,  GIARRIZZO GUIDO

IPC: H03L7/08 ,  G06F9/44 ,  G06N7/02 ,  H03L7/10

Abstract: PURPOSE: To provide a phase locked loop(PLL) circuit equipped with fuzzy control. CONSTITUTION: A PLL circuit 1 is provided with a phase comparator 2 and its output is connected to a low-pass filter 3 for driving a voltage controlled oscillator. The phase comparator 2 generates a signal expressing a phase difference between a signal generated by the oscillator 4 and an input signal. Further, this oscillator 4 is driven by a control signal generated by fuzzy control. The input of fuzzy control is a signal expressing the phase-difference.

公开(公告)号：DE69400916T2

公开(公告)日：1997-04-03

申请号：DE69400916

申请日：1994-07-01

Applicant: SGS THOMSON MICROELECTRONICS ,  CONS RIC MICROELETTRONICA

Inventor： TRAVAGLIA FREDERICO ,  LA ROSA MARIA GRAZIA ,  GIARRIZZO GUIDO

IPC: H03L7/08 ,  G06F9/44 ,  G06N7/02 ,  H03L7/10

Abstract: A phase-lock loop circuit (1) with fuzzy control, which comprises a phase comparator (2) whose output is connected to a low-pass filter (3) that is suitable to drive a voltage-controlled oscillator (4); the phase comparator (2) is suitable to generate a signal (z) that represents the phase difference between an input signal (x) and a signal (y) generated by the oscillator. The particularity of the invention resides in the fact that the oscillator (4) is furthermore driven by a control signal (Vinj) generated by fuzzy control means (5) the input whereof is the signal (z) representing the phase difference.

公开(公告)号：DE69400916D1

公开(公告)日：1996-12-19

申请号：DE69400916

申请日：1994-07-01

Applicant: SGS THOMSON MICROELECTRONICS ,  CONS RIC MICROELETTRONICA

Inventor： TRAVAGLIA FREDERICO ,  LA ROSA MARIA GRAZIA ,  GIARRIZZO GUIDO

IPC: H03L7/08 ,  G06F9/44 ,  G06N7/02 ,  H03L7/10

Abstract: A phase-lock loop circuit (1) with fuzzy control, which comprises a phase comparator (2) whose output is connected to a low-pass filter (3) that is suitable to drive a voltage-controlled oscillator (4); the phase comparator (2) is suitable to generate a signal (z) that represents the phase difference between an input signal (x) and a signal (y) generated by the oscillator. The particularity of the invention resides in the fact that the oscillator (4) is furthermore driven by a control signal (Vinj) generated by fuzzy control means (5) the input whereof is the signal (z) representing the phase difference.