FR2371822B1 - - Google Patents
Info
- Publication number
- FR2371822B1 FR2371822B1 FR7732112A FR7732112A FR2371822B1 FR 2371822 B1 FR2371822 B1 FR 2371822B1 FR 7732112 A FR7732112 A FR 7732112A FR 7732112 A FR7732112 A FR 7732112A FR 2371822 B1 FR2371822 B1 FR 2371822B1
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/02—Indicating arrangements
- H03J1/04—Indicating arrangements with optical indicating means
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB44661/76A GB1590444A (en) | 1976-10-27 | 1976-10-27 | Phase locked loop tuning system with preset tuning |
US05/790,863 US4097810A (en) | 1976-10-27 | 1977-04-26 | Phase locked loop tuning system with a preset channel memory |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2371822A1 FR2371822A1 (en) | 1978-06-16 |
FR2371822B1 true FR2371822B1 (sv) | 1982-01-29 |
Family
ID=26265434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7732112A Granted FR2371822A1 (en) | 1976-10-27 | 1977-10-25 | Electronic tuning unit for radio or TV receivers - uses active devices to adjust local oscillator by phase lock loop |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5354406A (sv) |
AU (1) | AU515265B2 (sv) |
CA (1) | CA1096519A (sv) |
DE (1) | DE2748321A1 (sv) |
FI (1) | FI773122A (sv) |
FR (1) | FR2371822A1 (sv) |
SE (1) | SE422133B (sv) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4182994A (en) * | 1977-08-22 | 1980-01-08 | Rca Corporation | Phase locked loop tuning system including stabilized time interval control circuit |
DE2919994C2 (de) * | 1979-05-17 | 1986-12-18 | Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka | Digitaler Frequenz-Synthetisierer |
JPS5890831A (ja) * | 1982-11-22 | 1983-05-30 | Nec Corp | Fmラジオ受信機 |
PL149642B1 (en) * | 1986-04-08 | 1990-03-31 | Digital frequency synthetizer |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1961329B2 (de) * | 1969-12-06 | 1972-06-22 | Fa Wandel u Goltermann, 7410 Reut lingen | Digital einstellbarer frequenzgeregelter schwingungserzeuger |
DE2512738C2 (de) * | 1975-03-22 | 1982-03-25 | Robert Bosch Gmbh, 7000 Stuttgart | Frequenzregler |
-
1977
- 1977-10-14 CA CA288,806A patent/CA1096519A/en not_active Expired
- 1977-10-20 FI FI773122A patent/FI773122A/fi not_active Application Discontinuation
- 1977-10-20 SE SE7711846A patent/SE422133B/sv unknown
- 1977-10-21 AU AU29946/77A patent/AU515265B2/en not_active Expired
- 1977-10-25 FR FR7732112A patent/FR2371822A1/fr active Granted
- 1977-10-26 JP JP12916077A patent/JPS5354406A/ja active Granted
- 1977-10-27 DE DE19772748321 patent/DE2748321A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
SE422133B (sv) | 1982-02-15 |
JPS5354406A (en) | 1978-05-17 |
DE2748321A1 (de) | 1978-05-03 |
FI773122A (fi) | 1978-04-28 |
FR2371822A1 (en) | 1978-06-16 |
AU515265B2 (en) | 1981-03-26 |
CA1096519A (en) | 1981-02-24 |
SE7711846L (sv) | 1978-04-28 |
JPS5718378B2 (sv) | 1982-04-16 |
AU2994677A (en) | 1979-04-26 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |