NL7212893A - - Google Patents
Info
- Publication number
- NL7212893A NL7212893A NL7212893A NL7212893A NL7212893A NL 7212893 A NL7212893 A NL 7212893A NL 7212893 A NL7212893 A NL 7212893A NL 7212893 A NL7212893 A NL 7212893A NL 7212893 A NL7212893 A NL 7212893A
- Authority
- NL
- Netherlands
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
- H03J7/08—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 varactors, i.e. voltage variable reactive diodes
- H03J7/10—Modification of automatic frequency control sensitivity or linearising automatic frequency control operation
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7487871A JPS54606B2 (https=) | 1971-09-25 | 1971-09-25 | |
| JP7487971A JPS543323B2 (https=) | 1971-09-25 | 1971-09-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL7212893A true NL7212893A (https=) | 1973-03-27 |
| NL163688B NL163688B (nl) | 1980-04-15 |
| NL163688C NL163688C (nl) | 1980-09-15 |
Family
ID=26416051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7212893.A NL163688C (nl) | 1971-09-25 | 1972-09-22 | Automatische-frequentieregelinrichting voor een televisie-afstemmer. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3824474A (https=) |
| CA (1) | CA961937A (https=) |
| DE (1) | DE2246972C3 (https=) |
| FR (1) | FR2153466B1 (https=) |
| GB (1) | GB1409798A (https=) |
| NL (1) | NL163688C (https=) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4074216A (en) * | 1974-02-27 | 1978-02-14 | U.S. Philips Corporation | Receiver tuning circuit |
| JPS5229146B2 (https=) * | 1974-12-18 | 1977-07-30 | ||
| US4020420A (en) * | 1975-03-20 | 1977-04-26 | Matsushita Electric Industrial Co., Ltd. | Electronic channel selector |
| GB1536040A (en) * | 1975-12-26 | 1978-12-20 | Sony Corp | Automatic fine tuning circuit |
| JPS5287915A (en) * | 1976-01-19 | 1977-07-22 | Hitachi Ltd | Afc unit for electronic tuner |
| JPS5563118A (en) * | 1978-11-02 | 1980-05-13 | Sony Corp | Aft circuit |
| JP3141900B2 (ja) * | 1992-04-07 | 2001-03-07 | ソニー株式会社 | Ａｆｃ回路及びそのｉｃ |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3693094A (en) * | 1969-06-25 | 1972-09-19 | Matsushita Electric Industrial Co Ltd | Apparatus for superimposing an afc voltage on uhf and vhf tuning voltages for channel selection |
| US3619803A (en) * | 1970-03-16 | 1971-11-09 | Gte Sylvania Inc | Temperature and voltage compensation for transistorized vco control circuit |
| US3697885A (en) * | 1970-12-04 | 1972-10-10 | Rca Corp | Automatic frequency control circuits |
-
1972
- 1972-09-20 GB GB4351572A patent/GB1409798A/en not_active Expired
- 1972-09-21 US US00290841A patent/US3824474A/en not_active Expired - Lifetime
- 1972-09-22 CA CA152,347A patent/CA961937A/en not_active Expired
- 1972-09-22 NL NL7212893.A patent/NL163688C/xx not_active IP Right Cessation
- 1972-09-25 DE DE2246972A patent/DE2246972C3/de not_active Expired
- 1972-09-25 FR FR7233822A patent/FR2153466B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL163688B (nl) | 1980-04-15 |
| NL163688C (nl) | 1980-09-15 |
| DE2246972C3 (de) | 1975-09-18 |
| GB1409798A (en) | 1975-10-15 |
| FR2153466B1 (https=) | 1977-07-29 |
| FR2153466A1 (https=) | 1973-05-04 |
| CA961937A (en) | 1975-01-28 |
| DE2246972B2 (de) | 1975-02-13 |
| US3824474A (en) | 1974-07-16 |
| DE2246972A1 (de) | 1973-04-05 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| V4 | Discontinued because of reaching the maximum lifetime of a patent |