NL7901412A - CONTROL SYSTEM FOR FREQUENCY SYNTHESIS. - Google Patents
CONTROL SYSTEM FOR FREQUENCY SYNTHESIS.Info
- Publication number
- NL7901412A NL7901412A NL7901412A NL7901412A NL7901412A NL 7901412 A NL7901412 A NL 7901412A NL 7901412 A NL7901412 A NL 7901412A NL 7901412 A NL7901412 A NL 7901412A NL 7901412 A NL7901412 A NL 7901412A
- Authority
- NL
- Netherlands
- Prior art keywords
- control system
- frequency synthesis
- synthesis
- frequency
- control
- Prior art date
Links
- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000003786 synthesis reaction Methods 0.000 title 1
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
- H03L7/193—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 the frequency divider/counter comprising a commutable pre-divider, e.g. a two modulus divider
-
- 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
- H03J5/0281—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 the digital values being held in an auxiliary non erasable memory
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
- H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB714078 | 1978-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7901412A true NL7901412A (en) | 1979-08-24 |
Family
ID=9827385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7901412A NL7901412A (en) | 1978-02-22 | 1979-02-22 | CONTROL SYSTEM FOR FREQUENCY SYNTHESIS. |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS54125910A (en) |
AR (1) | AR224730A1 (en) |
BE (1) | BE874367A (en) |
BR (1) | BR7901178A (en) |
DE (1) | DE2906059A1 (en) |
ES (1) | ES477973A1 (en) |
FI (1) | FI790564A (en) |
FR (1) | FR2418592A1 (en) |
IT (1) | IT1193179B (en) |
NL (1) | NL7901412A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3627768A1 (en) * | 1986-08-16 | 1988-02-18 | Standard Elektrik Lorenz Ag | Device for selecting certain receiving channels in a receiving device of entertainment electronics which can be tuned to receiving channels |
DE3634246A1 (en) * | 1986-10-08 | 1988-04-21 | Grundig Emv | Tuning system, particularly for video generators and television receivers |
DE3830921A1 (en) * | 1988-09-12 | 1990-03-22 | Grundig Emv | Arrangement for adapting a receiving device to various channel spacings |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1047373B (en) * | 1975-10-16 | 1980-09-10 | Indesit | ARRANGEMENT FOR SELECTING A RECEIVABLE FREQUENCY IN A SIGNAL RECEIVER |
-
1979
- 1979-02-16 DE DE19792906059 patent/DE2906059A1/en not_active Withdrawn
- 1979-02-20 FI FI790564A patent/FI790564A/en unknown
- 1979-02-21 FR FR7904428A patent/FR2418592A1/en active Granted
- 1979-02-21 IT IT20399/79A patent/IT1193179B/en active
- 1979-02-22 JP JP1911779A patent/JPS54125910A/en active Pending
- 1979-02-22 ES ES477973A patent/ES477973A1/en not_active Expired
- 1979-02-22 BE BE193631A patent/BE874367A/en not_active IP Right Cessation
- 1979-02-22 NL NL7901412A patent/NL7901412A/en not_active Application Discontinuation
- 1979-02-22 BR BR7901178A patent/BR7901178A/en unknown
- 1979-02-22 AR AR275587A patent/AR224730A1/en active
Also Published As
Publication number | Publication date |
---|---|
FR2418592A1 (en) | 1979-09-21 |
AR224730A1 (en) | 1982-01-15 |
BR7901178A (en) | 1979-10-09 |
JPS54125910A (en) | 1979-09-29 |
ES477973A1 (en) | 1979-10-16 |
FR2418592B1 (en) | 1985-02-15 |
BE874367A (en) | 1979-06-18 |
IT7920399A0 (en) | 1979-02-21 |
FI790564A (en) | 1979-08-23 |
DE2906059A1 (en) | 1979-08-30 |
IT1193179B (en) | 1988-06-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CNR | Transfer of rights (patent application after its laying open for public inspection) |
Free format text: PLESSEY OVERSEAS LIMITED |
|
A85 | Still pending on 85-01-01 | ||
BV | The patent application has lapsed |