WO2009127811A3 - Clock generator circuits - Google Patents

Clock generator circuits Download PDF

Info

Publication number
WO2009127811A3
WO2009127811A3 PCT/GB2009/000929 GB2009000929W WO2009127811A3 WO 2009127811 A3 WO2009127811 A3 WO 2009127811A3 GB 2009000929 W GB2009000929 W GB 2009000929W WO 2009127811 A3 WO2009127811 A3 WO 2009127811A3
Authority
WO
WIPO (PCT)
Prior art keywords
clock generator
generator circuits
pulse
equaliser
frequency synthesiser
Prior art date
Application number
PCT/GB2009/000929
Other languages
French (fr)
Other versions
WO2009127811A2 (en
Inventor
Michael James Underhill
James Edward Brodrick
Original Assignee
Toric Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toric Limited filed Critical Toric Limited
Publication of WO2009127811A2 publication Critical patent/WO2009127811A2/en
Publication of WO2009127811A3 publication Critical patent/WO2009127811A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/08—Clock generators with changeable or programmable clock frequency
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
    • H03K5/135—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals by the use of time reference signals, e.g. clock signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop

Abstract

A clock generator circuit includes a frequency synthesiser (10) and a pulse equaliser unit (20) for processing irregularly spaced pulses, having a repeating pulse pattern, generated by the frequency synthesiser (10). The pulse equaliser includes an integrator, a DC removal circuit and a comparator.
PCT/GB2009/000929 2008-04-18 2009-04-09 Clock generator circuits WO2009127811A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0807152A GB0807152D0 (en) 2008-04-18 2008-04-18 Clock generator circuits
GB0807152.4 2008-04-18

Publications (2)

Publication Number Publication Date
WO2009127811A2 WO2009127811A2 (en) 2009-10-22
WO2009127811A3 true WO2009127811A3 (en) 2010-07-22

Family

ID=39472388

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/000929 WO2009127811A2 (en) 2008-04-18 2009-04-09 Clock generator circuits

Country Status (2)

Country Link
GB (1) GB0807152D0 (en)
WO (1) WO2009127811A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999003207A1 (en) * 1997-07-10 1999-01-21 Nokia Networks Oy Digital phase locked loop
US6359490B1 (en) * 1999-06-15 2002-03-19 Texas Instruments Incorporated Clamping circuit and interface circuit therefor
US6417707B1 (en) * 1997-07-07 2002-07-09 Toric Limited Noise reduction circuits
WO2006010898A1 (en) * 2004-07-26 2006-02-02 Toric Limited Anti-jitter circuits
US20070285851A1 (en) * 2006-06-07 2007-12-13 Maxwell Technologies, Inc. Apparatus and method for cold sparing in multi-board computer systems
US20080061707A1 (en) * 2006-09-11 2008-03-13 Koito Manufacturing Co., Ltd. Discharge lamp lighting circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6417707B1 (en) * 1997-07-07 2002-07-09 Toric Limited Noise reduction circuits
WO1999003207A1 (en) * 1997-07-10 1999-01-21 Nokia Networks Oy Digital phase locked loop
US6359490B1 (en) * 1999-06-15 2002-03-19 Texas Instruments Incorporated Clamping circuit and interface circuit therefor
WO2006010898A1 (en) * 2004-07-26 2006-02-02 Toric Limited Anti-jitter circuits
US20070285851A1 (en) * 2006-06-07 2007-12-13 Maxwell Technologies, Inc. Apparatus and method for cold sparing in multi-board computer systems
US20080061707A1 (en) * 2006-09-11 2008-03-13 Koito Manufacturing Co., Ltd. Discharge lamp lighting circuit

Also Published As

Publication number Publication date
WO2009127811A2 (en) 2009-10-22
GB0807152D0 (en) 2008-05-21

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