JPS5583331A - Reception frequency setter of receiver - Google Patents
Reception frequency setter of receiverInfo
- Publication number
- JPS5583331A JPS5583331A JP16034178A JP16034178A JPS5583331A JP S5583331 A JPS5583331 A JP S5583331A JP 16034178 A JP16034178 A JP 16034178A JP 16034178 A JP16034178 A JP 16034178A JP S5583331 A JPS5583331 A JP S5583331A
- Authority
- JP
- Japan
- Prior art keywords
- oscillator
- output frequency
- output
- less
- circuit
- 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.)
- Pending
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
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
- H03J7/22—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To make it possible to set digitally a reception frequency even by a tuner circuit using a variable capacitor by controlling the output frequency of a local oscillator by making a comparison between its count value and digital set value. CONSTITUTION:For example, when the output frequency of local oscillator 3 should be 69.3MHz, set value N0 of digital setter 10 has three high-order digits 6, 9 and 3 in sequence. Now, when the output frequency of oscillator 3 is not less than 69.4MHz, output N1 of counter 9 is not less than 694 and the comparison value of digital comparator 11 results in N1>N0. For the purpose, AFC operation of AFC circuit 8 is turned OFF and motor 13 is driven to reduce the output frequency of oscillator 3. On the other hand, when the output frequency of oscillator 3 is less than 69.3MHz, the output frequency of oscillator 3 is increased. Next, when the output frequency of oscillator 3 is between 69.30 and 69.39MHz, the output of counter 9 is 693, resulting in N1=N0. Therefore, motor 13 is stopped and circuit 8 is put into AFC operation. Consequently, the output frequency of oscillator 3 is adjusted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16034178A JPS5583331A (en) | 1978-12-20 | 1978-12-20 | Reception frequency setter of receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16034178A JPS5583331A (en) | 1978-12-20 | 1978-12-20 | Reception frequency setter of receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5583331A true JPS5583331A (en) | 1980-06-23 |
Family
ID=15712880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16034178A Pending JPS5583331A (en) | 1978-12-20 | 1978-12-20 | Reception frequency setter of receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5583331A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6139616A (en) * | 1984-07-30 | 1986-02-25 | Koden Electronics Co Ltd | Automatic tuning device |
JPS6454422U (en) * | 1988-01-20 | 1989-04-04 | ||
US8419407B2 (en) | 2007-10-05 | 2013-04-16 | Nok Corporation | Extruder |
-
1978
- 1978-12-20 JP JP16034178A patent/JPS5583331A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6139616A (en) * | 1984-07-30 | 1986-02-25 | Koden Electronics Co Ltd | Automatic tuning device |
JPH0342808B2 (en) * | 1984-07-30 | 1991-06-28 | ||
JPS6454422U (en) * | 1988-01-20 | 1989-04-04 | ||
JPH0317467Y2 (en) * | 1988-01-20 | 1991-04-12 | ||
US8419407B2 (en) | 2007-10-05 | 2013-04-16 | Nok Corporation | Extruder |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5596722A (en) | Receiving detection circuit | |
JPS5537027A (en) | Frequency discriminating circuit | |
JPS5583331A (en) | Reception frequency setter of receiver | |
ES8506952A1 (en) | Controlled oscillator circuit. | |
JPS5429956A (en) | Pulse generator | |
JPS55125728A (en) | Antenna preset tuning unit for transmitter | |
JPS5547774A (en) | Phase synchronism circuit | |
JPS5710523A (en) | Automatic sweep digital tuning circuit | |
JPS5564441A (en) | Radio receiver or the like | |
JPS54119801A (en) | Automatic channel selector of digital type | |
JPS5784625A (en) | Phase synchronizing oscillator | |
JPS5558617A (en) | Automatic channel selection unit | |
GB1489828A (en) | Broadcast receiver including a station finding circuit | |
JPS51147105A (en) | Auto-tuning receiver | |
JPS54102939A (en) | Timer circuit | |
JPS5530670A (en) | Electronic watch | |
JPS5546658A (en) | Digital phase shifter | |
JPS577623A (en) | Automatic sweeping device | |
JPS54123806A (en) | Digital preset tuner | |
JPS5597707A (en) | Digital frequency sweep oscillator | |
JPS55118216A (en) | Digital preset tuner | |
JPS5467301A (en) | Channel selector | |
JPS5517437A (en) | Portable electronic watch | |
JPS5382224A (en) | Automatic frequency control circuit | |
JPS5523657A (en) | Correction circuit for reception frequency |