FR2401559A1 - Circuit temporisateur pour produire notamment des impulsions de sortie ayant une duree representative d'une information analogique - Google Patents
Circuit temporisateur pour produire notamment des impulsions de sortie ayant une duree representative d'une information analogiqueInfo
- Publication number
- FR2401559A1 FR2401559A1 FR7824266A FR7824266A FR2401559A1 FR 2401559 A1 FR2401559 A1 FR 2401559A1 FR 7824266 A FR7824266 A FR 7824266A FR 7824266 A FR7824266 A FR 7824266A FR 2401559 A1 FR2401559 A1 FR 2401559A1
- Authority
- FR
- France
- Prior art keywords
- duration
- generating
- timing circuit
- output pulses
- particular output
- 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.)
- Withdrawn
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
- H03L7/197—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/199—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division with reset of the frequency divider or the counter, e.g. for assuring initial synchronisation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/124—Sampling or signal conditioning arrangements specially adapted for A/D converters
- H03M1/129—Means for adapting the input signal to the range the converter can handle, e.g. limiting, pre-scaling ; Out-of-range indication
- H03M1/1295—Clamping, i.e. adjusting the DC level of the input signal to a predetermined value
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
- H03M1/0626—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by filtering
- H03M1/0631—Smoothing
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Analogue/Digital Conversion (AREA)
- Electric Clocks (AREA)
- Superheterodyne Receivers (AREA)
Abstract
L'invention a pour objet un circuit temporisateur. Ce circuit comprend un comparateur 120 pour produire un signal de sortie ayant une durée fonction du fait que l'amplitude d'un signal d'entrée en forme de dent de scie dépasse l'amplitude d'un signal d'entrée continu. L'impulsion de sortie est envoyée à un filtre passe-bas 128 pour produire un signal de correction VH ayant une valeur proportionnelle à la durée de l'impulsion de sortie. Ce signal de correction permet de décaler l'un des signaux d'entrée par rapport à l'autre pour compenser les variations parasites sur la durée du signal de sortie. L'invention s'applique notamment à un convertisseur analogique-numérique.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3516777 | 1977-08-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2401559A1 true FR2401559A1 (fr) | 1979-03-23 |
Family
ID=10374624
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7824266A Withdrawn FR2401559A1 (fr) | 1977-08-22 | 1978-08-21 | Circuit temporisateur pour produire notamment des impulsions de sortie ayant une duree representative d'une information analogique |
FR7824265A Withdrawn FR2401557A1 (fr) | 1977-08-22 | 1978-08-21 | Appareil de controle d'un intervalle temps |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7824265A Withdrawn FR2401557A1 (fr) | 1977-08-22 | 1978-08-21 | Appareil de controle d'un intervalle temps |
Country Status (8)
Country | Link |
---|---|
US (2) | US4182994A (fr) |
JP (2) | JPS5445510A (fr) |
DE (2) | DE2836724A1 (fr) |
FI (1) | FI782483A (fr) |
FR (2) | FR2401559A1 (fr) |
GB (2) | GB2003300B (fr) |
IT (1) | IT7826896A0 (fr) |
SE (1) | SE7808664L (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2511563A1 (fr) * | 1981-08-14 | 1983-02-18 | Trt Telecom Radio Electr | Dispositif de verrouillage de phase pour fournir a sa sortie des signaux dont la frequence peut varier sur une large gamme |
EP0240934A2 (fr) * | 1986-04-08 | 1987-10-14 | Przemyslowy Instytut Telekomunikacji | Synthétiseur de fréquence numérique |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4598317A (en) * | 1984-01-23 | 1986-07-01 | Rca Corporation | Ramp comparator arrangement useful in an on-screen channel indicator system of a television receiver |
US4679005A (en) * | 1985-01-23 | 1987-07-07 | Sony Corporation | Phase locked loop with frequency offset |
US4600889A (en) * | 1985-03-13 | 1986-07-15 | Motorola, Inc. | Coherent oscillator |
US4654542A (en) * | 1985-07-01 | 1987-03-31 | Gte Laboratories Incorporated | Staircase ramp voltage generating apparatus with energy reuse |
US4926131A (en) * | 1987-06-25 | 1990-05-15 | Schlumberger Industries, Inc. | Triangle waveform generator for pulse-width amplitude multiplier |
US5220206A (en) * | 1990-06-29 | 1993-06-15 | Analog Devices, Inc. | Control apparatus with improved recovery from power reduction, and storage device therefor |
US5157342A (en) * | 1991-08-30 | 1992-10-20 | The United States Of America As Represented By The Secretary Of The Navy | Precision digital phase lock loop circuit |
US5369376A (en) * | 1991-11-29 | 1994-11-29 | Standard Microsystems, Inc. | Programmable phase locked loop circuit and method of programming same |
KR960014676B1 (ko) * | 1993-12-29 | 1996-10-19 | 양승택 | 위성통신용 저속 데이타 전용 단말 지구국의 송신 기준주파수 발진기(tro) |
US5692023A (en) * | 1994-11-04 | 1997-11-25 | Lsi Logic Corporation | Phase locked loop including distributed phase correction pulses for reducing output ripple |
CA2678640C (fr) * | 1996-03-15 | 2012-08-07 | E Guide, Inc. | Methode et dispositif d'affichage d'emissions de television, et guide electronique des emissions |
KR100643980B1 (ko) * | 2000-08-02 | 2006-11-10 | 엘지전자 주식회사 | Gsm 단말기의 타임 버스트 램프 특성 조정방법 |
US6392460B1 (en) * | 2001-01-17 | 2002-05-21 | Walter H. Vail | Drive circuit for tattoo machine which provides improved operator control |
CN102984630B (zh) | 2011-09-06 | 2015-12-02 | 昂宝电子(上海)有限公司 | 用于音频放大系统中减少失真的系统和方法 |
JP2014179508A (ja) * | 2013-03-15 | 2014-09-25 | Tokyo Electron Ltd | 基板処理装置及び基板処理方法 |
US9685919B2 (en) | 2013-08-21 | 2017-06-20 | On-Bright Electronics (Shanghai) Co., Ltd. | Amplification systems and methods with output regulation |
CN103441739B (zh) * | 2013-08-21 | 2015-04-22 | 昂宝电子(上海)有限公司 | 具有一个或多个通道的放大系统和方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1462279A (fr) * | 1965-09-21 | 1966-04-15 | Cit Alcatel | Liaisons radio à fréquences porteuses aléatoires |
GB1590444A (en) * | 1976-10-27 | 1981-06-03 | Rca Corp | Phase locked loop tuning system with preset tuning |
CA1096519A (fr) * | 1976-10-27 | 1981-02-24 | Rca Corporation | Dispositif d'accord a boucle d'asservissement de phase avec memoire a canaux preregles |
-
1978
- 1978-07-17 US US05/925,655 patent/US4182994A/en not_active Expired - Lifetime
- 1978-07-28 GB GB7831592A patent/GB2003300B/en not_active Expired
- 1978-08-15 FI FI782483A patent/FI782483A/fi unknown
- 1978-08-15 SE SE7808664A patent/SE7808664L/xx unknown
- 1978-08-21 FR FR7824266A patent/FR2401559A1/fr not_active Withdrawn
- 1978-08-21 JP JP10225478A patent/JPS5445510A/ja active Pending
- 1978-08-21 FR FR7824265A patent/FR2401557A1/fr not_active Withdrawn
- 1978-08-21 US US05/935,204 patent/US4204173A/en not_active Expired - Lifetime
- 1978-08-21 IT IT7826896A patent/IT7826896A0/it unknown
- 1978-08-22 GB GB7834116A patent/GB2003351B/en not_active Expired
- 1978-08-22 JP JP10266578A patent/JPS5456349A/ja active Pending
- 1978-08-22 DE DE19782836724 patent/DE2836724A1/de not_active Withdrawn
- 1978-08-22 DE DE19782836723 patent/DE2836723A1/de not_active Withdrawn
Non-Patent Citations (2)
Title |
---|
EXBK/68 * |
EXBK/71 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2511563A1 (fr) * | 1981-08-14 | 1983-02-18 | Trt Telecom Radio Electr | Dispositif de verrouillage de phase pour fournir a sa sortie des signaux dont la frequence peut varier sur une large gamme |
EP0072593A1 (fr) * | 1981-08-14 | 1983-02-23 | Telecommunications Radioelectriques Et Telephoniques T.R.T. | Dispositif de verrouillage de phase pour fournir à sa sortie des signaux dont la fréquence peut varier sur une large gamme |
EP0240934A2 (fr) * | 1986-04-08 | 1987-10-14 | Przemyslowy Instytut Telekomunikacji | Synthétiseur de fréquence numérique |
JPS62243424A (ja) * | 1986-04-08 | 1987-10-23 | プジエミスウオヴイ・インステイテユ−ト・テレコムニカジ | デジタル周波数シンセサイザ− |
EP0240934A3 (fr) * | 1986-04-08 | 1989-07-26 | Przemyslowy Instytut Telekomunikacji | Synthétiseur de fréquence numérique |
Also Published As
Publication number | Publication date |
---|---|
FI782483A (fi) | 1979-02-23 |
FR2401557A1 (fr) | 1979-03-23 |
IT7826896A0 (it) | 1978-08-21 |
DE2836723A1 (de) | 1979-03-22 |
GB2003300A (en) | 1979-03-07 |
US4204173A (en) | 1980-05-20 |
DE2836724A1 (de) | 1979-03-01 |
US4182994A (en) | 1980-01-08 |
GB2003351B (en) | 1982-03-03 |
GB2003351A (en) | 1979-03-07 |
JPS5445510A (en) | 1979-04-10 |
SE7808664L (sv) | 1979-02-23 |
GB2003300B (en) | 1982-03-17 |
JPS5456349A (en) | 1979-05-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |