IT1111927B - RECEIVING CIRCUIT WITH A FREQUENCY SYNTHESIZER IN COMMUNICATION TECHNOLOGY RECEIVING DEVICES - Google Patents
RECEIVING CIRCUIT WITH A FREQUENCY SYNTHESIZER IN COMMUNICATION TECHNOLOGY RECEIVING DEVICESInfo
- Publication number
- IT1111927B IT1111927B IT21591/79A IT2159179A IT1111927B IT 1111927 B IT1111927 B IT 1111927B IT 21591/79 A IT21591/79 A IT 21591/79A IT 2159179 A IT2159179 A IT 2159179A IT 1111927 B IT1111927 B IT 1111927B
- Authority
- IT
- Italy
- Prior art keywords
- communication technology
- frequency synthesizer
- receiving
- receiving circuit
- receiving devices
- Prior art date
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2814429A DE2814429C3 (en) | 1978-04-04 | 1978-04-04 | Receiver circuit with a frequency sytithetizer in telecommunications receiving devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7921591A0 IT7921591A0 (en) | 1979-04-04 |
| IT1111927B true IT1111927B (en) | 1986-01-13 |
Family
ID=6036101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT21591/79A IT1111927B (en) | 1978-04-04 | 1979-04-04 | RECEIVING CIRCUIT WITH A FREQUENCY SYNTHESIZER IN COMMUNICATION TECHNOLOGY RECEIVING DEVICES |
Country Status (7)
| Country | Link |
|---|---|
| CH (1) | CH641608A5 (en) |
| DE (1) | DE2814429C3 (en) |
| FR (1) | FR2422293A1 (en) |
| GB (1) | GB2018065B (en) |
| IT (1) | IT1111927B (en) |
| NL (1) | NL180795C (en) |
| SE (1) | SE427885B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5580928A (en) * | 1978-12-15 | 1980-06-18 | Sony Corp | Channel selection device |
| ZA81769B (en) * | 1980-02-18 | 1982-02-24 | Sangamo Weston | Receivers suitable for use in remotely-operable switching devices and data transmission systems |
| US4709406A (en) * | 1985-09-19 | 1987-11-24 | Matsushita Electric Industrial Co., Ltd. | A.F.C. system for broad-band FM receiver |
| US4959872A (en) * | 1988-06-23 | 1990-09-25 | Kabushiki Kaisha Toshiba | Automatic frequency control apparatus for FM receivers |
| JP4089003B2 (en) * | 1998-04-01 | 2008-05-21 | ソニー株式会社 | Receiver and receiving method |
| JP3978744B2 (en) | 2002-07-25 | 2007-09-19 | パイオニア株式会社 | Digital to analog converter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1412412A1 (en) * | 1960-12-27 | 1968-10-03 | Metz App Werke | Automatic sharpening |
| US3624512A (en) * | 1969-06-02 | 1971-11-30 | Rca Corp | Automatic frequency control system |
| FR2175671B1 (en) * | 1972-03-17 | 1977-04-01 | Trt Telecom Radio Electr | |
| US4025953A (en) * | 1975-11-26 | 1977-05-24 | Quasar Electronics Corporation | Frequency synthesizer tuning system for television receivers |
| US4041535A (en) * | 1976-07-22 | 1977-08-09 | Matsushita Electric Corporation Of America | Frequency synthesizer tuning system with signal seek control |
-
1978
- 1978-04-04 DE DE2814429A patent/DE2814429C3/en not_active Expired
-
1979
- 1979-03-05 CH CH212679A patent/CH641608A5/en not_active IP Right Cessation
- 1979-03-28 SE SE7902787A patent/SE427885B/en not_active IP Right Cessation
- 1979-03-29 GB GB7911060A patent/GB2018065B/en not_active Expired
- 1979-04-04 FR FR7908469A patent/FR2422293A1/en active Granted
- 1979-04-04 IT IT21591/79A patent/IT1111927B/en active
- 1979-04-04 NL NLAANVRAGE7902658,A patent/NL180795C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2814429A1 (en) | 1979-10-25 |
| NL180795C (en) | 1987-04-16 |
| SE7902787L (en) | 1979-10-05 |
| NL7902658A (en) | 1979-10-08 |
| DE2814429C3 (en) | 1980-10-09 |
| IT7921591A0 (en) | 1979-04-04 |
| FR2422293A1 (en) | 1979-11-02 |
| DE2814429B2 (en) | 1980-02-21 |
| CH641608A5 (en) | 1984-02-29 |
| NL180795B (en) | 1986-11-17 |
| FR2422293B1 (en) | 1982-06-18 |
| SE427885B (en) | 1983-05-09 |
| GB2018065A (en) | 1979-10-10 |
| GB2018065B (en) | 1982-07-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970428 |