JPS57162527A - Setting device for preset voltage of frequency synthesizer - Google Patents

Setting device for preset voltage of frequency synthesizer

Info

Publication number
JPS57162527A
JPS57162527A JP56046363A JP4636381A JPS57162527A JP S57162527 A JPS57162527 A JP S57162527A JP 56046363 A JP56046363 A JP 56046363A JP 4636381 A JP4636381 A JP 4636381A JP S57162527 A JPS57162527 A JP S57162527A
Authority
JP
Japan
Prior art keywords
voltage
input
values
frequency synthesizer
comparator
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP56046363A
Other languages
Japanese (ja)
Other versions
JPH029734B2 (en
Inventor
Yukio Murakami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56046363A priority Critical patent/JPS57162527A/en
Publication of JPS57162527A publication Critical patent/JPS57162527A/en
Publication of JPH029734B2 publication Critical patent/JPH029734B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/187—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop
    • H03L7/189—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop comprising a D/A converter for generating a coarse tuning voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
    • H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals

Abstract

PURPOSE:To produce a conversion table with high efficinecy, by connecting an automaticvoltage control circuit to a PLL circuit of a frequency synthesizer. CONSTITUTION:First a P-ROM7 and a D/A converter 8 are separated from each other by a switch 11. When digital values D1-Dn, i.e., the channel information are supplied to a programable counter 6, the control voltage VC of a VCO5 varies by the function of a PLL circuit. The voltage VC is applied to the minus (-) input of a comparator 10 via a time constant circuit 9. The comparator 10 applies the voltage corresponding to the error between the voltage VC and the reference voltage VR to a preset input 52 via a switch 11. The voltage of the input 52 differs by the values D1-Dn. Accordingly, the voltage of the input 52 receives an A/D conversion through an A/D converter 12 every time the values D1-Dn have some difference and then writtn into the P-ROM packaged to a P-ROM writer 13. In this case, the values D1-Dn function as the address signals.
JP56046363A 1981-03-31 1981-03-31 Setting device for preset voltage of frequency synthesizer Granted JPS57162527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046363A JPS57162527A (en) 1981-03-31 1981-03-31 Setting device for preset voltage of frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046363A JPS57162527A (en) 1981-03-31 1981-03-31 Setting device for preset voltage of frequency synthesizer

Publications (2)

Publication Number Publication Date
JPS57162527A true JPS57162527A (en) 1982-10-06
JPH029734B2 JPH029734B2 (en) 1990-03-05

Family

ID=12745065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046363A Granted JPS57162527A (en) 1981-03-31 1981-03-31 Setting device for preset voltage of frequency synthesizer

Country Status (1)

Country Link
JP (1) JPS57162527A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0273031A1 (en) * 1986-06-03 1988-07-06 Information Resources Inc Characterized fast tuning control for a television system.
WO1993005578A1 (en) * 1991-08-30 1993-03-18 Fujitsu Limited Frequency synthesizer
JP2011507151A (en) * 2007-11-30 2011-03-03 スティル・リバー・システムズ・インコーポレーテッド Match the resonant frequency of the resonant cavity to the frequency of the input voltage
US9622335B2 (en) 2012-09-28 2017-04-11 Mevion Medical Systems, Inc. Magnetic field regenerator
US9661736B2 (en) 2014-02-20 2017-05-23 Mevion Medical Systems, Inc. Scanning system for a particle therapy system
US9681531B2 (en) 2012-09-28 2017-06-13 Mevion Medical Systems, Inc. Control system for a particle accelerator
US9706636B2 (en) 2012-09-28 2017-07-11 Mevion Medical Systems, Inc. Adjusting energy of a particle beam
US9730308B2 (en) 2013-06-12 2017-08-08 Mevion Medical Systems, Inc. Particle accelerator that produces charged particles having variable energies
US9925395B2 (en) 2005-11-18 2018-03-27 Mevion Medical Systems, Inc. Inner gantry
US9950194B2 (en) 2014-09-09 2018-04-24 Mevion Medical Systems, Inc. Patient positioning system
US9962560B2 (en) 2013-12-20 2018-05-08 Mevion Medical Systems, Inc. Collimator and energy degrader
US10155124B2 (en) 2012-09-28 2018-12-18 Mevion Medical Systems, Inc. Controlling particle therapy
US10254739B2 (en) 2012-09-28 2019-04-09 Mevion Medical Systems, Inc. Coil positioning system
US10258810B2 (en) 2013-09-27 2019-04-16 Mevion Medical Systems, Inc. Particle beam scanning
US10646728B2 (en) 2015-11-10 2020-05-12 Mevion Medical Systems, Inc. Adaptive aperture
US10653892B2 (en) 2017-06-30 2020-05-19 Mevion Medical Systems, Inc. Configurable collimator controlled using linear motors
US10675487B2 (en) 2013-12-20 2020-06-09 Mevion Medical Systems, Inc. Energy degrader enabling high-speed energy switching
USRE48047E1 (en) 2004-07-21 2020-06-09 Mevion Medical Systems, Inc. Programmable radio frequency waveform generator for a synchrocyclotron
US10925147B2 (en) 2016-07-08 2021-02-16 Mevion Medical Systems, Inc. Treatment planning
US11103730B2 (en) 2017-02-23 2021-08-31 Mevion Medical Systems, Inc. Automated treatment in particle therapy
US11291861B2 (en) 2019-03-08 2022-04-05 Mevion Medical Systems, Inc. Delivery of radiation by column and generating a treatment plan therefor

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0273031A1 (en) * 1986-06-03 1988-07-06 Information Resources Inc Characterized fast tuning control for a television system.
WO1993005578A1 (en) * 1991-08-30 1993-03-18 Fujitsu Limited Frequency synthesizer
US5389899A (en) * 1991-08-30 1995-02-14 Fujitsu Limited Frequency synthesizer having quick frequency pull in and phase lock-in
USRE48047E1 (en) 2004-07-21 2020-06-09 Mevion Medical Systems, Inc. Programmable radio frequency waveform generator for a synchrocyclotron
US10279199B2 (en) 2005-11-18 2019-05-07 Mevion Medical Systems, Inc. Inner gantry
US10722735B2 (en) 2005-11-18 2020-07-28 Mevion Medical Systems, Inc. Inner gantry
US9925395B2 (en) 2005-11-18 2018-03-27 Mevion Medical Systems, Inc. Inner gantry
JP2011507151A (en) * 2007-11-30 2011-03-03 スティル・リバー・システムズ・インコーポレーテッド Match the resonant frequency of the resonant cavity to the frequency of the input voltage
US9706636B2 (en) 2012-09-28 2017-07-11 Mevion Medical Systems, Inc. Adjusting energy of a particle beam
US9681531B2 (en) 2012-09-28 2017-06-13 Mevion Medical Systems, Inc. Control system for a particle accelerator
US9622335B2 (en) 2012-09-28 2017-04-11 Mevion Medical Systems, Inc. Magnetic field regenerator
US10368429B2 (en) 2012-09-28 2019-07-30 Mevion Medical Systems, Inc. Magnetic field regenerator
US10155124B2 (en) 2012-09-28 2018-12-18 Mevion Medical Systems, Inc. Controlling particle therapy
US10254739B2 (en) 2012-09-28 2019-04-09 Mevion Medical Systems, Inc. Coil positioning system
US9730308B2 (en) 2013-06-12 2017-08-08 Mevion Medical Systems, Inc. Particle accelerator that produces charged particles having variable energies
US10456591B2 (en) 2013-09-27 2019-10-29 Mevion Medical Systems, Inc. Particle beam scanning
US10258810B2 (en) 2013-09-27 2019-04-16 Mevion Medical Systems, Inc. Particle beam scanning
US9962560B2 (en) 2013-12-20 2018-05-08 Mevion Medical Systems, Inc. Collimator and energy degrader
US10675487B2 (en) 2013-12-20 2020-06-09 Mevion Medical Systems, Inc. Energy degrader enabling high-speed energy switching
US9661736B2 (en) 2014-02-20 2017-05-23 Mevion Medical Systems, Inc. Scanning system for a particle therapy system
US10434331B2 (en) 2014-02-20 2019-10-08 Mevion Medical Systems, Inc. Scanning system
US11717700B2 (en) 2014-02-20 2023-08-08 Mevion Medical Systems, Inc. Scanning system
US9950194B2 (en) 2014-09-09 2018-04-24 Mevion Medical Systems, Inc. Patient positioning system
US10646728B2 (en) 2015-11-10 2020-05-12 Mevion Medical Systems, Inc. Adaptive aperture
US10786689B2 (en) 2015-11-10 2020-09-29 Mevion Medical Systems, Inc. Adaptive aperture
US11213697B2 (en) 2015-11-10 2022-01-04 Mevion Medical Systems, Inc. Adaptive aperture
US11786754B2 (en) 2015-11-10 2023-10-17 Mevion Medical Systems, Inc. Adaptive aperture
US10925147B2 (en) 2016-07-08 2021-02-16 Mevion Medical Systems, Inc. Treatment planning
US11103730B2 (en) 2017-02-23 2021-08-31 Mevion Medical Systems, Inc. Automated treatment in particle therapy
US10653892B2 (en) 2017-06-30 2020-05-19 Mevion Medical Systems, Inc. Configurable collimator controlled using linear motors
US11291861B2 (en) 2019-03-08 2022-04-05 Mevion Medical Systems, Inc. Delivery of radiation by column and generating a treatment plan therefor
US11311746B2 (en) 2019-03-08 2022-04-26 Mevion Medical Systems, Inc. Collimator and energy degrader for a particle therapy system
US11717703B2 (en) 2019-03-08 2023-08-08 Mevion Medical Systems, Inc. Delivery of radiation by column and generating a treatment plan therefor

Also Published As

Publication number Publication date
JPH029734B2 (en) 1990-03-05

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